Entries |
Document | Title | Date |
20080198816 | MULTIPLE APPEARANCE PROTOCOL FOR TIMELY ORGANIZED AD HOC NETWORK - The present invention comprises a plurality of timely organized ad hoc data communications networks and a method for data communication. A network from the plurality of networks includes media-independent communications links and plurality of network nodes, where a network node in the plurality could be coupled to at least one other network node via a media independent communication link, and a plurality of access points, where each access point in the plurality is coupled to at least one other access point via another media-independent communications link. The network communicates during a data collection cycle that includes a broadcast interval, a time-slotted communications interval and a random access time-slotted communications interval. The plurality of network nodes are arranged in a self-assigned hierarchy where one or more nodes in the plurality of network nodes can be assigned more than one time slot to transmit the network information messages. | 08-21-2008 |
20080205353 | Generalized " Evenly Distributed Mas Allocation" Policy to Support Low-Power Uwb Applications - In order that media access slots MAS are allocated based on minimum latency requirements of, for example, not less than 4 ms, or on a medium utilization efficiency or power consumption requirement for a minimum reservation block length, both high-efficiency and low-latency schemes (or category) need to coexist within a superframe with fair support given to both. The maximization of contiguous available MAS between low-latency and high-efficiency schemes ensures that power saving and overhead risk are minimized without compromising the support for low-latency applications. | 08-28-2008 |
20080219222 | OPTIMIZING DOWNLINK THROUGHPUT WITH USER COOPERATION AND SCHEDULING IN ADAPTIVE CELLULAR NETWORKS - User cooperation is an emerging transmission framework where users act as relays of each other to provide extra diversity paths for better overall performance. In various embodiments, systems and methods for transmitting data from a basestation to a mobile device in an adaptive communications network including user cooperation are provided. Among various embodiments, relaying is performed according to a time division duplex (TDD) system according to either a downlink-assisted relaying (DAR) which performs a relaying operation in a defined supplemental downlink timeslot or according to an uplink-assisted relaying (UAR) which performs a relaying operation in a defined supplemental uplink timeslot. Among other embodiments, relay transmissions according to a max-throughput scheduling algorithm which achieves a maximum system throughput without imposing any fairness constraints on users or according to a round-robin scheduling algorithm which achieves absolute fairness in terms of delays among the considered users. The downlink throughput is optimized from the basestation to the mobile device utilizing either amplify-and-forward (AF) or decode-and-forward (DF) cooperation protocols. | 09-11-2008 |
20080232334 | WIRELESS COMMUNICATION NETWORK AND DATA AGGREGATION METHOD FOR THE SAME - A wireless communication network includes a network coordinator (NC) having plural channels and plural wireless transceivers, and plural nodes. Each node has status information, a number of channels and a number of wireless transceivers. Each node and the NC communicate in a Carrier Sense Multiple Access mode. Each node communicates the status information thereof to or toward the NC in a Time Division Multiple Access mode having plural time slots. The NC assigns the time slots and the channels to the nodes to provide a plurality of collision-free schedules therefor. The NC sends, for each node, a corresponding one of the collision-free schedules to or toward a corresponding one of the nodes. Each collision-free schedule includes a corresponding number of the time slots and a corresponding number of the channels that the corresponding one of the nodes employs to communicate the status information thereof to or toward the NC. | 09-25-2008 |
20080247365 | Throughput Optimized Carrier Allocation - A cell plan operation, a Routine and a base station are disclosed wherein user entities are allocated to at least two carriers (C | 10-09-2008 |
20080253338 | RECEIVING APPARATUS - LCCH steal receiving is done by a receiving unit which uses TDMA method without overloading to the control processor. A UW detecting unit | 10-16-2008 |
20080259880 | Method of allocating uplink radio resources - A method of allocating uplink radio resources to a mobile device, in which uplink and downlink timeslots are allocated, and the sum of the allocated uplink timeslots and the allocated downlink timeslots within a predetermined period is less than the total number of assigned time slots and does not exceed a predetermined maximum. The resources are allocated in a reduced transmission time interval configuration, in which an indication of the uplink timeslot allocation is received from the network in a downlink timeslot, or downlink timeslot pair, directing the mobile device to transmit only in one uplink timeslot pair. | 10-23-2008 |
20080267140 | Wireless Internet Terminal and Packet Transmission Method for Improving Quality of Service - Disclosed are a terminal of an OFDMA-TDMA wireless Internet system capable of reducing transmission delay time a packet transmission method. A MAC layer of the terminal is divided into a MAC software part and a MAC hardware part to control priorities of data packets at a high level and low level. The high level priority controller carries out various fine control operations according to a QoS policy and the low level priority controller performs mechanical control operations based on a predetermined simple fixed priority policy. | 10-30-2008 |
20080267141 | Identification of long links within a wireless network - An apparatus and method of identifying long links within a wireless network is disclosed. The method includes identifying long links within a wireless network. The method includes a first node estimating a link quality of a wireless link between the first node and a second node of the wireless network. The first node uni-casts packets to the second node. The first node monitors a packet acknowledgment success rate. The first node identifies the wireless link to be a long link if the link quality is above a link threshold, and the packet acknowledgment success rate is below an acknowledgment threshold. | 10-30-2008 |
20080273504 | Synchronizing media data from multiple data channels for IP network transport - In one embodiment, a method comprises receiving by a gateway a plurality of data streams via respective data channels; identifying by the gateway, from among the data streams, selected data streams for aggregation based on the selected data streams each having a same encoding type and destined for a same destination gateway; and synchronizing the selected data streams by the gateway based on: successively sampling a prescribed group of bits from each of the selected data streams at a corresponding sampling time interval, aggregating the sampled groups of bits, having been sampled from the selected data streams at the corresponding sampling time interval, into an IP media packet payload, and outputting a corresponding IP media packet, containing the IP media packet payload for the corresponding sampling time interval, to the destination gateway via an IP network. | 11-06-2008 |
20080285525 | INTER-CELL DISCOVERY AND COMMUNICATION USING TIME DIVISION MULTIPLE ACCESS COEXISTENCE BEACONING PROTOCOL - A self-coexistence window reservation protocol for a plurality of Wireless Regional Area Network (WRAN) cells operating in a WRAN over a plurality of channels includes a sequence of self-coexistence windows that uniquely identifies a transmission period for each WRAN cell. A self-coexistence window reservation protocol is included within the first packet of a Coexistence Beaconing Protocol period identifying when each WRAN cell associated with a particular channel will transmit. When not actively transmitting, a WRAN cells remains in a passive, receiving mode to accept data. As the transmissions of each WRAN cell operating on a particular channel are scheduled, contention for a transmission period is eliminated. | 11-20-2008 |
20090028115 | HYBRID WLAN-GSM DEVICE SYNCHRONIZATION TO ELIMINATE NEED FOR COSTLY FILTERS - A multi-mode WLAN-GSM communications device ( | 01-29-2009 |
20090034489 | Long Range Scheduling for Directional Antenna Manet Networks - Method and apparatus for scheduling time division multiple access (TDMA) communications among a plurality of peer nodes arranged to form a wireless ad hoc mobile network. The peer nodes communicate with each other using directional antennas and a TDMA process. The method includes a scheduling process for scheduling at least one transmit time slot during which a first one of the plurality of peer nodes transmits wireless data to a second one of the plurality of peer nodes. | 02-05-2009 |
20090034490 | Generation of Quality Metrics using Multibranch PSYNC detection module - A wireless terminal is operable to receive a Wideband Code Division Multiple Access (WCDMA) signal from a base station and includes clock circuitry, a wireless interface, and a Primary Synchronization (PSYNC) module. The clock circuitry generates a wireless terminal clock using a wireless terminal oscillator. The wireless interface receives the WCDMA signal, which is produced by the base station using a base station clock that is produced using a base station oscillator that is more accurate than the wireless terminal oscillator. The PSYNC module includes a plurality of PSYNC correlation branches. Each PSYNC correlation branch phase rotates the WCDMA signal based upon a respective frequency offset, correlates the phase rotated WCDMA signal with a Primary Synchronization Channel (PSCH) code over a plurality of sampling positions, and produces PSYNC correlation energies based upon the correlations for each of the plurality of sampling positions. | 02-05-2009 |
20090034491 | MOBILE AD-HOC NETWORK PROVIDING DESIRED LINK DELAY OFFSET WITHOUT GUARD TIMES AND RELATED METHODS - A MANET may include a plurality of MANET nodes each including a wireless transceiver, a position determining device, and a controller cooperating with the wireless transceiver and position determining device for establishing a wireless communication link with an adjacent MANET node based upon a time division multiple access (TDMA) implementation. The TDMA implementation may use time slots without using a range dependent guard time therein. The controller may further determine a range to the adjacent MANET node, and schedule time slots to offset a link delay in a received signal from the adjacent MANET node based upon the determined range. | 02-05-2009 |
20090046673 | METHOD AND APPARATUS FOR IMPROVED DUAL CHANNEL OPERATION AND ACCESS POINT DISCOVERY IN WIRELESS COMMUNICATION NETWORKS - A method and apparatus of coordinating Time Division Multiple Access operation of wireless communication devices is disclosed. The method comprises an access point announcing a Quiet Period to one or more clients of the access point and transmitting as part of Target Beacons and probe responses an indication to the one or more clients that the access point will be absent from the communication channel for a period of time. The method also comprises the one or more clients establishing a connection with the access point after the Quiet Period when the access point is present on the communication channel on the basis of the indication. | 02-19-2009 |
20090046674 | METHOD AND APPARATUS FOR PROVIDING CHANNEL FEEDBACK INFORMATION - An approach is provided for transmitting channel feedback information. Bandwidth is partitioned into one or more resource groups corresponding to one or more resource units. One or more of the partitions is designated for transmission of a plurality of uplink pilots that specify channel information for the corresponding resource units. | 02-19-2009 |
20090046675 | Scheduling Communication Frames in a Wireless Network - A method of scheduling communications in a multi-node wireless mesh network which has a first network device and a second network device includes defining a communication timeslot of a predetermined duration, defining a first superframe having a repeating superframe cycle including a first number of the communication timeslots, defining a second superframe having a repeating superframe cycle including a second number of the communication timeslots, aligning the first superframe with the second superframe, so that one of the timeslots of the first superframe begins simultaneously with one of the timeslots of the second superframe, and associating the first and the second superframes with a network schedule, so that the first network device and the second network device transmit data according to the network schedule. | 02-19-2009 |
20090059871 | Time-to-Trigger Handling Methods and Apparatus - Time-to-trigger (TtT) time periods are usually fixed. A better TtT parameter is adapted based on the signal quality that a receiver perceives from its surrounding area. For example, the lower the value of a first signal quality at the same time that the value of a second signal quality is greater than a trigger threshold, the shorter the TtT parameter becomes. | 03-05-2009 |
20090080386 | INTERFERENCE MANAGEMENT EMPLOYING FRACTIONAL TIME REUSE - Interference that occurs during wireless communication may be managed through the use of fractional reuse and other techniques. In some aspects fractional reuse may relate to HARQ interlaces, portions of a timeslot, frequency spectrum, and spreading codes. Interference may be managed through the use of a transmit power profile and/or an attenuation profile. Interference also may be managed through the use of power management-related techniques. | 03-26-2009 |
20090092105 | METHOD OF RESERVING RESOURCES WITH A MAXIMUM DELAY GUARANTEE FOR MULTI-HOP TRANSMISSION IN A DISTRIBUTED ACCESS WIRELESS COMMUNICATIONS NETWORK - In a communication network ( | 04-09-2009 |
20090103501 | Decentralized Media Access Control for Ad-Hoc Mobile Wireless Network - A method of operating a decentralized ad-hoc wireless network including wireless stations, comprises establishing a common time reference which is used by the wireless stations to share access to a common wireless channel, the common time reference having a periodic superframe structure including a Scheduled Beacon Period, a Contended Beacon Period, Contention Periods (CPs) and Contention Free Periods (CFPs). The method further comprises time-scheduling, using wireless communication between the wireless stations, the CFPs in the SBTT interval to at least some of the wireless stations requesting access to the CFPs, and granting access to the CPs to at least some of the wireless stations requesting access to the CPs. | 04-23-2009 |
20090109938 | Method and system for medium access control in communication networks - A method and a system for medium access control among devices in a communication system is provided. One implementation involves selecting a contention-based control period for access to a shared communication medium; dividing the contention-based control period into multiple time slots, wherein each slot has a duration that is a function of one or more of the duration of transmission of a request to send (RTS) frame, the duration of transmission of a clear to send (CTS) frame, and an inter frame space (IFS) duration therebetween; and transmitting an RTS frame in a selected slot for allocating a reservation period for accessing the medium for data transmission. | 04-30-2009 |
20090109939 | PILOT REPORT BASED ON INTERFERENCE INDICATIONS IN WIRELESS COMMUNICATION SYSTEMS - Systems and methodologies are described that facilitate employing interference-overload indications to generate pilot strength reports that can be leveraged to mitigate reverse link interference. An affected base station can send interference-overload indications when experiencing a strong interference/jamming scenario due to reverse link transmission by an offending access terminal. The offending access terminal can monitor interference-overload indications from the affected base station (e.g., although the affected base station can be excluded from an active set of the offending access terminal) and send a pilot strength report to a serving base station in response. The serving base station can receive the interference induced pilot strength report and command the offending access terminal not to transmit on certain channel resources (e.g., time, frequency, spatial, . . . ); thus, the affected base station can use these resources to schedule transmission(s) by access terminal(s) served thereby. | 04-30-2009 |
20090116461 | Distributed Scheduling - In a network, some data are transmitted between stations during time slots in contention free periods. Selecting the time slots includes collecting timing information at some stations in the network. The timing information indicates the times of existing time slots used by stations whose transmissions can be reliably received by the station collecting the timing information. The timing information is distributed to other stations in the network. A new time slot for transmission between a first and a second station is selected based at least on timing information indicating the times of existing time slots used by stations whose transmissions can be reliably received by at least one of the first and second station. | 05-07-2009 |
20090122767 | METHOD AND APPARATUS FOR GENERATING DATA FRAME - Provided are a method and apparatus for generating a data frame. The method includes generating subframes from at least one media access control (MAC) service data unit (MSDU); generating a retransmission policy field for recording a policy related to a retransmission request, against an error occurring while the subframes are being transmitted, with regard to each of the subframes; and generating the data frame by using the subframes and the retransmission policy field which is generated with regard to each of the subframes. | 05-14-2009 |
20090129345 | OPPORTUNISTIC UPLINK SCHEDULING - Systems and methodologies are described that facilitate scheduling uplink transmissions. For instance, a time sharing scheme can be utilized such that differing mobile devices can be scheduled to transmit during differing time slots; however, it is also contemplated that a static scheme can be employed. Pursuant to an illustration, an interference budget can be combined with a time varying weighting factor associated with a base station; the weighting factor can be predefined and/or adaptively adjusted (e.g., based upon a load balancing mechanism). Moreover, the weighted interference budget can be leveraged for selecting mobile devices for uplink transmission (e.g., based at least in part upon path loss ratios of the mobile devices). Further, disparate interference budgets can be utilized by differing channels of a sector at a particular time. Also, for example, a base station can assign a loading factor to be utilized by wireless terminal(s) for generating channel quality report(s). | 05-21-2009 |
20090135791 | BASE STATION AND COMMUNICATION SYSTEM - A base station includes: a first reception timing detecting unit configured to detect a reception timing of a packet received from a first mobile station of multiple mobile stations which is situated in a first sector; a second reception timing detecting unit configured to detect a reception timing of a packet received from a second mobile station of the multiple mobile stations which is situated in a second sector; a transmission timing determining unit configured to determine transmission timings of signals transmitted from the first mobile station and the second mobile station based on the reception timings detected by the first reception timing detecting unit and the second reception timing detecting unit; a control information generating unit configured to generate transmission timing control information for the first mobile station and the second mobile station based on the transmission timings; and a radio resource allocating unit configured to allocate orthogonal radio resources to the first mobile station and the second mobile station. | 05-28-2009 |
20090168732 | METHOD AND APPARATUS FOR ALLOCATING CHANNEL RESOURCES IN A WIRELESS COMMUNICATION SYSTEM - Disclosed is a method for dynamically allocating channel resources in a wireless communication system. A request for a channel resource by a new talkgroup call is received. Whether the new talkgroup call is associated to an associated communication based upon an operational relationship of the new talkgroup call to the associated communication is determined. The channel resource for the new talkgroup call based upon the operational relationship is allocated. | 07-02-2009 |
20090190563 | METHOD AND CIRCUIT FOR CONTROLLING RECEPTION PATH OF MULTI-STANDBY TERMINAL - A method and a circuit for controlling a reception path of a multi-standby terminal are provided. If a first communication module is in a transmission state, all filters disposed in a reception path of a second communication module are activated. If the first communication module is not in a transmission state, fewer than all of the filters disposed in the reception path of the second communication module are activated. A plurality of filters disposed in the reception path of the second communication module are activated partially or fully according to the transmission state of the first communication module. | 07-30-2009 |
20090196264 | DEDICATED CHANNEL ENTRY METHOD - A dedicated channel entry method for a system of digital wireless communications utilizing time division multiplex access and including a base station for voice transmission with wired connection to a command console for voice input/output and with wireless connection to a plurality of mobile station, including the steps of: executing a first communication procedure for selecting an arbitrary mobile station, a second communication procedure for entry to a dedicated channel, and a third communication procedure for transmitting voices at said command station, respectively from the command console relative to the mobile station; and executing said communication procedures in a desired command to allow the designated mobile station to realize automatic entry to the dedicated channel and receive voices from the command console transmitted via the dedicated channel. | 08-06-2009 |
20090201892 | FAST DRX FOR DL SPEECH TRANSMISSION IN WIRELESS NETWORKS - A user equipment (UE) operating in a wireless network receives a sequence of speech frames on a speech channel. The UE demodulates at least a portion of a speech frame of the sequence of received speech frames to produce a metric value. The UE discontinues processing of the speech frame and enters a low power discontinuous reception (DRX) mode if the metric value indicates absence of valid speech data, and ignores and does not demodulate at least the next remaining bursts of the speech frame after entering DRX mode. | 08-13-2009 |
20090201893 | MOBILE COMMUNICATION SYSTEM, MOBILE COMMUNICATION METHOD, BASE STATION, AND MOBILE STATION - An effective random access control can be performed with a high throughput. A base station ( | 08-13-2009 |
20090201894 | PIPELINE ARCHITECTURE FOR MULTI-SLOT WIRELESS LINK PROCESSING - A wireless communication device processes N Radio Frequency (RF) bursts contained within N slots of a digital communications time divided frame, wherein N is a positive integer greater than one. The wireless communication device includes an RF front end, a baseband processor, and an equalizer module. The RF front end is operable to receive the plurality of received RF bursts and to convert the RF bursts to corresponding baseband signals. The baseband processor is operable to receive the baseband signals, to pre-equalization process the baseband signals to produce processed baseband signals, and to post-equalization process soft decisions. The equalizer is operable to equalize the processed baseband signals to produce the soft decisions. These RF bursts may be contained in adjacent slots or, in non-adjacent slots, or in a combination of adjacent slots and non-adjacent slots. | 08-13-2009 |
20090232111 | Modem timing offset compensation for line card redundancy failover - In one embodiment, a first ranging timing description describing at least a duration of time during which a subject cable modem (CM) may burst and a duration of time during which the subject CM and other CMs in a multiple access network are not permitted to burst is translated into a second ranging timing description describing a duration during which a burst from the subject CM is expected to be received by a cable modem termination system (CMTS). The CMTS is conditioned to receive a burst from the subject CM during the duration of time described by the second ranging timing description. A timing offset is determined from at least an actual time a burst from the subject CM is received by the CMTS and the duration of time during which the subject CM and other CMs in the multiple access network are not permitted to burst to produce a determined timing offset. The determined timing offset is reported to compensate for delay in the multiple access network and the subject CM. | 09-17-2009 |
20090232112 | System and methods for polling for dynamic slot reservation - Embodiments include systems and methods for allocating time to a plurality of devices in the network of a piconet controller. Embodiments comprise selectively directing a steerable antenna beam of the piconet controller to a plurality of devices in succession during a polling process to receive time allocation requests from one or more of the devices. Subsequent to the polling process, a grant procedure is performed wherein a device is granted permission to transmit in a subsequent time interval. Also during the grant process, one or more devices are instructed to receive from the device granted permission to transmit. The polling process and the grant process occur in the same superframe. | 09-17-2009 |
20090232113 | WIRELESS COMMUNICATION SYSTEM, BASE STATION AND TRANSMISSION TIMING CONTROL METHOD - A wireless communication system includes first and second transmitting stations cooperating with each other to transmit data signals in parallel to the same receiving station. The first transmitting station transmits data at a slot reference timing of each TDMA slot within a data transmission period. The second transmitting station calculates the adjustment amount of data transmission timing for the receiving station within a propagation delay time measurement period, and transmits data at a transmission timing determined by a slot reference timing and the adjustment amount in each TDMA slot within the data transmission period. | 09-17-2009 |
20090296668 | Method For Controlling Access To TDMA Wireless Channel Form Nodes Of Network Of Either Linear Or Tree Topology - Requests of resources of uplink flows towards a base station (BS) and/or downlink flows towards end nodes are computed by each requesting node on an end-to-end basis. Each requesting node issues a cumulative request given by summing up the same request for each link separating the node from the BS plus each link separating the BS from the destination node, enabling the centralized node to perform connection based scheduling. The BS in response to all cumulative requests grants uplink and/or downlink resources for each link. The profile of grants is equal to the profile of requests when the amount of resources requested is below the maximum net throughput on MAC layer. When not below the maximum net through-put on MAC layer, the ideal profile of grants is normalized with respect to a ratio between the maximum net throughput on MAC layer and the amount of the overall requested resources. | 12-03-2009 |
20090310575 | Keep alive timeslots in a heterogeneous MAC protocol to track handsets in a wireless network - This disclosure describes a new keep alive timeslots based method to track registered handsets for a MAC protocol that combines contention-free and contention-based MAC protocols into a heterogeneous MAC protocol used for forwarding VoIP traffic in VoIP systems on wireless networks using multiple base stations thus allowing for transmission of high bit-rate data to multiple users over wired and wireless means. | 12-17-2009 |
20090323643 | METHOD FOR COOPERATIVE MULTI-ANTENNA COMMUNICATION - A method of cooperative multi-antenna communication between a base station and node existing in a wireless network is provided. A cooperative multi-antenna communication method includes receiving data from at least one node of a node group that receives data from a base station, performing multiple input multiple output (MIMO) signal processing with respect to the received data, the MIMO signal processing indicating signal processing performed in a receiving end of a MIMO system, and transmitting the signal processed data to at least one target node. | 12-31-2009 |
20100002658 | BUFFER MANAGEMENT - A receive buffer of the type that receives information at regular time slots and is required to indicate any status changes to a micro control unit (MCU), the receive buffer including: a slot status field for storing slot status information at each timeslot for the receive buffer; a receive interrupt flag for sending a signal to the MCU for indicating a change of the slot status field on receipt of the information at each timeslot; characterised in that the receive buffer also includes: an empty slot recognition bit for determining if an empty slot is received and generating an indicator thereof, wherein the indicator is passed to the MCU instead of the useless empty slot status field. | 01-07-2010 |
20100027513 | Base Station Device and Control Method for the Same - A base station device ( | 02-04-2010 |
20100027514 | WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD - There is provided a wireless communication system capable of requesting activation from a host without reserving a time slot for performing data transfer. There is provided a wireless communication system provided with a host | 02-04-2010 |
20100046483 | PROTOCOL FOR SWITCHING BETWEEN CHANNELS IN TYPE 2 AGILE RADIO - The system ( | 02-25-2010 |
20100046484 | TIME DIVISION MULTIPLE ACCESS FOR NETWORK NODES WITH MULTIPLE RECEIVERS - A system facilitates communication among nodes in a wireless network. A timeslot is assigned to each of a group of nodes ( | 02-25-2010 |
20100054215 | ADAPTIVE TIME ALLOCATION IN A TDMA MAC LAYER - A method and apparatus for wirelessly re-distributing multi-media streams, including receiving multi-media streams at a master device from a source, adaptively determining channel time allocations in response to status information for transmit queues and transmission channel conditions, constructing a superframe from said multi-media streams for insertion into said downstream channel time allocations and wireless transmitting the channel time allocations to effect re-distribution of said multi-media streams to a remote device, are described. Also described is a method for wirelessly receiving re-distributed a multi-media stream including receiving a beacon signal and a channel time allocation and receiving said re-distributed multi-media stream. | 03-04-2010 |
20100054216 | Wireless Communication Terminal and Base Station Selection Method - A wireless communication terminal, in accordance with a time division multiple access system, establishes radio-links to multiple base stations and conducts a communication by using slots assigned by the multiple base stations, including: a synchronization information acquisition means generating synchronization information regarding slots used between the wireless communication terminal and multiple base stations that are candidates to which a communication is conducted; and a selection means, based on the synchronization information, classifies the multiple base stations into multiple synchronized base station groups which include the base stations that provides synchronized slots, and selects one of the synchronized base station groups including the bases stations that are candidates to which the radio-link is established. | 03-04-2010 |
20100091744 | System and Method for Extending Neighboring Cell Search Window - A system and method for accommodating mobile station synchronization to neighbor cells in a mobile communication system. At least one available frame is utilized as a search window in an uplink data transfer multiframe for receiving neighboring cell synchronization information. At least one transmit time slot in a frame adjacent to the available frame in the uplink data transfer multiframe is surrendered to extend the search window. The neighboring cell synchronization information may then be contiguously received via the extended search window. | 04-15-2010 |
20100111050 | WIRELESS NETWORK SYSTEM USING CYCLIC FRAME - A wireless network system using a cyclic frame including a beacon period (BP), a mesh contention access period (MCAP), and a slot period (SP). The cyclic frame has a frame structure that shares a channel hopping sequence of a node, thereby sharing the channel hopping sequence that operates as an existing mesh node without generating an additional channel hopping sequence, and supporting mesh and star type topologies together in order to efficiently operate a network. | 05-06-2010 |
20100124209 | METHOD FOR POWER CONSUMPTION IN WIRELESS SENSOR NETWORK - A method for reducing power consumption in a wireless sensor network is provided. An optimized path destined for a sink node is set using a common channel in which first and second nodes use a CSMA scheme. A first channel is set and transmission/reception slots for packet transmission/reception arc allocated in the first channel. A packet is transmitted to the second node through a first transmission slot using a TDMA scheme. When a packet is not received from the second node through a first reception slot within a first set amount of time, the first reception slot is allowed to transition to an inactive state. The first node is one of the sink node, at least one parent node, and at least one child node of the parent node, and the second node is one of child nodes of the first node. | 05-20-2010 |
20100135261 | METHOD AND APPARATUS FOR FACILITATING RE-TRANSMITTING UNACKNOWLEDGED PACKETS - One embodiment of the present invention provides a system for facilitating re-transmitting packets in a communication network. During operation, the system transmits one or more acknowledgments to a neighbor in a designated time slot. Next, the system receives one or more acknowledgments from the neighbor, where a respective acknowledgment confirms that the data packets in a given past time slot have been processed by the neighbor. The system also receives a processed-through-counter (PTC) from the neighbor. Next, the system identifies a time slot up to the time slot indicated in the PTC and which has not been acknowledged by the neighbor. After identifying the time slot, the system re-transmits previously transmitted packets associated with the identified time slot to the neighbor without using a re-transmit timer. | 06-03-2010 |
20100135262 | SENSOR NODE OF LOW POWER FOR MONITORING APPLICATION IN MESH SENSOR NETWORK USING TIME DIVISION ACCESS SCHEME, AND ROUTING METHOD THEREOF - Provided are a sensor node of a low power for a monitoring application in a mesh sensor network using a time division access scheme, and a routing method thereof. The routing method of the sensor node may include: transmitting a beacon containing routing information to neighboring nodes in a first time slot within a first beacon interval that is allocated to the sensor node; and receiving a beacon from each of the neighboring nodes in a second time slot within a second beacon interval that is allocated to each of the neighboring nodes. | 06-03-2010 |
20100142495 | APPARATUS AND METHOD OF COMMUNICATION IN A WIRELESS NETWORK - A wireless communication device and a method of communication in a wireless personal area network (WPAN) are provided. The method includes assigning a shared channel time allocation across one or more neighbored networks, announcing the shared channel time allocation to the one or more neighbored networks enabling the neighbored network use the shared channel time allocation and communicating using a directional network access protocol on the shared channel time allocation which is towered directed to a communicated device. | 06-10-2010 |
20100142496 | METHOD FOR DYNAMICALLY ALLOCATING SLOT AND APPARATUS THEREOF - Provided are a dynamic slot allocation method and an apparatus using the same. According to the present invention, a service class of a mobile terminal is determined based on speed information received from the mobile terminal. In addition, slots are allocated to the mobile terminal with different periods for updating location information according to a service class. | 06-10-2010 |
20100142497 | METHOD FOR TRANSMITTING DATA AND METHOD FOR RECEIVING DATA - Provided is a method for minimizing energy consumption while increasing a data rate between sensor nodes in a sensor network. In the sensor network, a parent node receives reservation information from a first node among a plurality of child nodes in a first period and broadcasts channel allocation information of the first node according to the reservation information in the first period so that the first node performs the data transmission in a second period or third period and maintains a sleep mode until the first period ends. | 06-10-2010 |
20100142498 | METHOD OF PERFORMING RADIO LINK MEASUREMENT IN WIRELESS COMMUNICATION SYSTEM - A method of performing a radio link measurement includes receiving a measurement control message from a serving cell, the measurement control message comprising priority information which comprises at least one of priorities of radio access technologies (RATs), selecting at least one cell of the RATs based on the priority information, and performing a measurement on a signal received from the selected cell over a measurement period, the measurement period comprising a plurality of multi-frames, a multi-frame comprising a plurality of time division multiple access (TDMA) frames and at least one search frame, a TDMA frame comprising a plurality of time slots, wherein the measurement on the selected cell is performed during the at least one search frame. | 06-10-2010 |
20100157958 | METHOD, DEVICE AND SYSTEM FOR TEMPORARILY SELECTING A TIME SLOT - Temporarily selecting a TDMA timeslot by a radio communication device to thereby allow the radio communication device to communicate, through at least one repeater station, with a talkgroup of other radio communication devices is disclosed. The radio communication device has an assigned default timeslot for communicating with the talkgroup. The radio communication device determines if the default timeslot is available for the radio communication device to communicate with the talkgroup and searches for an available timeslot, when the default timeslot is unavailable. The radio communication device temporarily selects the available timeslot as a temporary selected group timeslot for the talkgroup. | 06-24-2010 |
20100157959 | METHOD AND DEVICE FOR ASSIGNING TRAFFIC CHANNELS IN A WIRELESS COMMUNICATION SYSTEM - A device uses a method for assigning a traffic channel in a wireless communication system. The method includes: receiving on a control channel a first message that includes a request for a traffic channel having a traffic channel structure; determining a delay in arrival of the first message; comparing the delay in arrival to a threshold value for the traffic channel structure; and when the delay in arrival exceeds the threshold value, assigning an available traffic channel in response to the request, wherein the traffic channel has a delay tolerance that exceeds the delay in arrival. | 06-24-2010 |
20100165955 | CENTRAL CONTROLLER AND METHODS FOR INTERFERENCE MITIGATION IN TDMA NETWORKS USING RANDOMLY ALLOCATED SERVICE PERIODS - Embodiments of a central controller and methods for interference mitigation in TDMA networks are generally described herein. In some embodiments, the central controller mitigates co-channel interference by randomizing locations of channel time allocations within superframes. | 07-01-2010 |
20100202420 | Methods and Systems for Scheduling Resources in a Telecommunication System - Aspects of the present invention relate to the scheduling of resources in a telecommunication system that includes a mobile terminal and base station. In one embodiment, the mobile terminal sends an initial scheduling request to a base station. Subsequently, the mobile terminal does not transmit a scheduling request to the base station unless and until a scheduling request triggering event is detected. | 08-12-2010 |
20100202421 | TRANSMITTING SIGNALS - A method, program and apparatus for transmitting a signal in a time slot of a channel comprising a plurality of time slots. Using a transmitter having a processor and a power amplifier, the method comprises: retrieving a reference ramp pattern from a memory; determining an output power level for the slot from a plurality of possible output power levels, each requiring a respective corresponding ramp pattern; executing software on the processor to apply a scaling function to the reference ramp pattern in dependence on the determined output power level, thus generating a scaled ramp pattern corresponding to the pattern required for that determined level; supplying the scaled ramp pattern to a control input of the power amplifier, to control the gain of the power amplifier during the time slot; and using the power amplifier, controlled according to the scaled ramp pattern, to transmit the signal in the time slot. | 08-12-2010 |
20100232400 | VIRTUALIZING SINGLE RADIO FOR MULTIPLE WIRELESS INTERFACES IN HOME MESH NETWORK - An embodiment is a technique to virtualize a single physical radio for multiple wireless interfaces. A physical wireless network interface is configured into a first virtual access point (VAP) and a second VAP on a device using a single radio transceiver in a home mesh network. The first and second VAPs operate on first and second channels corresponding to first and second modes, respectively, in a time division multiple access (TDMA) mode. | 09-16-2010 |
20100278156 | DATA COMMUNICATION METHOD USING BODY AREA NETWORK SUPERFRAME - There is provided a data communication method using a body area network superframe including an advertisement period, a contention medium access period, a beacon period, and a data transmit period, the data communication method including: broadcasting, by a coordinator node, predetermined information during the advertisement period; transmitting, by nodes, which wish to transmit data, the data only when carrier is not in use as a result of sensing the carrier after the contention medium access period is initiated and a predetermined backoff time elapses; broadcasting, by each of the nodes, periodic beacon signals during the beacon period; and transmitting, by each of the nodes, continuous data and periodic data during the data transmit period | 11-04-2010 |
20100322210 | WIRELESS MULTIPOINT VOICE NETWORK - In general, a mobile unit for communicating with other mobile units assigned to a group within a Multipoint Voice Network (“MVN”) having a plurality of groups is shown. The mobile unit may include transmitter, receiver, and controller. The transmitter is enabled to transmit a set of multiple carrier frequencies, where the transmitter is configured to transmit on one frequency chosen from a sub-set of multiple carrier frequencies from the set of multiple carrier frequencies. The sub-set of multiple carrier frequencies corresponds to the group to which the mobile unit is assigned. The receiver is configured to receive and demodulate the sub-set of multiple carrier frequencies and the controller configures the receiver to receive and demodulate the sub-set of multiple carrier frequencies that is assigned to the group. | 12-23-2010 |
20100322211 | SYSTEM AND METHOD FOR ADJUSTING MONITORING OF TIMESLOTS DURING DATA TRANSMISSION - A method for coordinating communications between a user equipment and a base station using a dual-channel communications protocol is presented. The method includes identifying a first set of timeslots for uplink and downlink communications between the user equipment and the base station for a first channel and a second channel. The method also includes, after identifying the first set of timeslots for uplink and downlink communications between the user equipment and the base station for a first channel and a second channel, reducing a number of timeslots monitored by the user equipment to less than the first set of timeslots on at least one of the first channel and the second channel. In some implementations, the method includes, after reducing the number of timeslots monitored by the user equipment, transmitting a control block, the control block identifying one or more timeslots being monitored by the user equipment. | 12-23-2010 |
20110038356 | VBR interference mitigation in an mmwave network - Methods, apparatuses, and systems to generate accurate interference signatures are disclosed. An apparatus embodiment may be a transmitting device that transmits VBR data. The transmitting device may be allotted a number of sub-slots in which the transmitting device uses to transmit the VBR data. However, the communicating device may rarely use all of the allotted slots and routinely use only a few of the sub-slots. A receiving device that may be affected by transmissions from the transmitting device, such as a receiver in a neighboring network, may monitor the channel to develop an interference pattern or interference signature. To enable the receiving device to develop an accurate interference signature, the transmitting device may transmit data over each of the allotted sub-slots within a predetermined period. | 02-17-2011 |
20110075641 | Systems and methods for interoperability positive train control - A method for implementing communications in a railroad communications system having a base station radio and remote radios, the remote radios including a mobile radio and a wayside radio. The method includes assigning a common radio communications channel for allowing a remote radio to connect with the base station radio using a carrier sense multiple access (CSMA) communications protocol and assigning a local channel for allowing communications between the radio base station and the remote radios and between the remote radios, wherein communications on the local channel utilizes a selected one of fixed time division multiple access (FTDMA) and dynamic time division multiple access (DTDMA) communications protocols. | 03-31-2011 |
20110085523 | METHOD FOR MANAGING A DISTRIBUTION OF BANDWIDTH IN A COMMUNICATIONS NETWORK, CORRESPONDING STORAGE MEANS AND SLAVE NODE - A method is proposed for managing access to a communications network clocked in transmission cycles by a master node characterized in that, during a given transmission cycle, a slave node of the network performs steps for: obtaining ( | 04-14-2011 |
20110122852 | METHOD AND APPARATUS FOR SHARING SIGNALS ON A SINGLE CHANNEL - A method and apparatus for transmitting two signals on a single channel comprising a single frequency and a single time slot are disclosed. The method includes: generating a first training sequence from a first set of training sequences; generating a second training sequence from a second set of training sequences. The first and second training sequences have a low cross-correlation ratio with respect to each other; and the second set of training sequences is different from the first set of training sequences. First and second data are generated. The first data is combined with the first training sequence to produce first combined data and the second data is combined with the second training sequence to produce second combined data. The first and second combined data are transmitted on the single channel by a single transmitting apparatus. | 05-26-2011 |
20110149924 | Techniques for dynamic resource allocation - Techniques are disclosed that dynamically allocate communications resources in a wireless communications network, such as a wireless personal area network (WPAN). For instance, a wireless communications device may obtain a resource allocation. This resource allocation includes a time slot (e.g., a TDMA time slot) within a wireless communications medium. The device determines a first portion of the time slot in which it intends to transmit data. Also, the wireless communications device relinquishes a second portion of the time slot that occurs after the first portion of the time slot. Based on this relinquishment, a central controller device may reallocate the second portion of the time slot. | 06-23-2011 |
20110149925 | SCHEDULING FOR ACCESS DIVISION MULTIPLEXING - Scheduling map(s) are generated and updated for employment in an access division multiplexing (ADM) environment for allocating resource utilization (e.g., use of transmission time intervals) to or between differing radio access technology networks, and particularly to a Long Term Evolution (LTE) network and a Global System for Mobile communication (GSM) network. In some example embodiments the scheduling map(s), apparatus, and methods hereof are implemented in a wireless terminal which participates in access division multiplexing between the differing radio access technologies, in other example embodiments the scheduling map(s), apparatus, and methods hereof are implemented in a network node (e.g., eNodeB) of one of the radio access technology networks, e.g., the Long Term Evolution (LTE) network. | 06-23-2011 |
20110194540 | MULTI-SITE MIMO COOPERATION IN CELLULAR NETWORKS - A method of serving a given data stream to a target mobile terminal, in a cellular communications network that includes a plurality of transmitting sites wherein each transmitting site including at least one antenna, is provided. The method includes designating at least two of the plurality of transmitting sites as cooperating sites; assigning tones to each transmitting site from a sub-band associated with the cooperating sites; dividing the data stream into at least two sub-data streams, each of the sub-data streams for transmission over selected tones; and interlacing tones of the cooperating sites in accordance with a selected one of a time switching and a frequency switching transmit diversity technique. Other techniques for multi-site MIMO cooperation are also provided. | 08-11-2011 |
20110200021 | Allocation of Uplink Resources - A wireless telecommunications system with mobile terminals, MSs and a Base Station, BS through which traffic to and from the MSs in a cell is routed, so that there can be Down Link, DL, traffic from the BS of a cell to the MSs in that cell, and Up Link, UL, traffic from those MSs to the BS. At least part of the UL traffic is contention based, and DL data to an MS must be acknowledged by the MS. The method comprises letting the BS detect MSs in the cell whose DL traffic rate exceeds a certain limit, and also comprises a mechanism for allocating to said detected MSs an UL bandwidth which enables them to acknowledge DL traffic within a certain time period from its reception by the MS. | 08-18-2011 |
20110206020 | Method, network nodes and system for broadcast transmission of data - Disclosed are methods for broadcast transmission of data in frames having multiple time slots, from one transmitting node to multiple receiving nodes in a network, having the following steps: The sending out of at least one broadcast request message from the transmitter node to the receiver nodes, wherein the time slots available to the transmitter node for data transmission are indicated; the transmitting back of time-slot granting messages from the receiving nodes, wherein at least one of the time-slots available to the respective receiver node for data transmission is in each case indicated jointly with one at the transmitter node; the sending out of a confirmation message from the transmitter node to the neighboring receiving nodes, wherein all of the receiving nodes are indicated in the time-slot granting messages jointly with the time-slots available at the transmitter node; the performing of a broadcast transmission of the data from the transmitter node to the receiver nodes in the jointly available time slots. | 08-25-2011 |
20110216746 | PRIVATE NETWORK COMMUNICATION TERMINAL AND METHOD FOR REALIZING PRIVATE NETWORK COMMUNICATION - The present invention relates to communication technologies and provides a private network communication terminal and a method for realizing private network communication, In the invention, one private network communication can only be performed in one time slot with a fixed location in a DMR TDMA frame, so that other mobile communication terminals that do not participate in the private network communication can determine an unoccupied time slot in advance, thereby they can initiate a new private network communication with the unoccupied time slot. | 09-08-2011 |
20110255521 | METHOD FOR DIRECT MODE CHANNEL ACCESS - A method for direct mode channel access in a time division multiple access (TDMA) system includes: assigning a radio operating in the TDMA system to transmission on a first time slot of a direct mode channel; initiating a request for a direct mode transmission on the direct mode channel; determining, by the radio, whether there is communication activity present in the first time slot or a second time slot of the direct mode channel; aligning, by the radio, to a selected slot timing based on the determining step; and transmitting, by the radio, with the selected slot timing on the first time slot. | 10-20-2011 |
20110280226 | Multi-Network Manager, Method And System - A method for reducing interference between wireless networks for industrial devices. The method includes the steps of: obtaining a first resource schedule of a first wireless network manager; obtaining a second resource schedule of a second wireless network manager; determining whether there are resource conflicts between the first resource schedule and the second resource schedule; and providing, when at least one resource conflict is determined, a new wireless resource schedule for the first wireless network manager to avoid at least part of the determined resource conflicts. A corresponding multi-network manager, system and computer program product are also presented. | 11-17-2011 |
20110317672 | WIRELESS BASE STATION APPARATUS, WIRELESS TERMINAL APPARATUS, AND BASE STATION AUTHENTICATION METHOD - A base station authentication method which allows base station authentication to be performed by more wireless terminal apparatuses within a fixed period of time. This method is a base station authentication method for TDMA wireless communication and comprises: a step in which wireless terminal apparatuses ( | 12-29-2011 |
20120020338 | METHODS AND APPARATUS TO ALLOCATE RESOURCES AND DETECT ALLOCATED RESOURCES IN WIRELESS COMMUNICATIONS - Example methods and apparatus to allocate resources and detect allocated resources in wireless communications are disclosed. A disclosed example method involves receiving a first radio block in a first radio block period and detecting an uplink allocation indicator contained in the first radio block. The uplink allocation indicator does not allocate any uplink radio block in a second radio block period following immediately after the first radio block period. The example method also involves transmitting a second radio block based on the uplink allocation indicator during a third radio block period separated from the first radio block period by at least one radio block period. | 01-26-2012 |
20120082143 | INCREASED THROUGHPUT IN RADIO-FREQUENCY COMMUNICATIONS - A mobile telephony radiocommunication management process, with first time slots and second time slots being provided independently of each other, said process comprising the default selection of first time slots for transmitting/receiving first bursts corresponding to these first time slots, and in the case of a first time slot at least partially overlapping with a second time slot, choosing the first time slot or the second time slot, for respectively transmitting/receiving the first burst corresponding to the first time slot or receiving the second burst corresponding to the second time slot, with this choice being made so as to minimize the number of second bursts received for a given result. | 04-05-2012 |
20120087354 | METHODS AND RECEIVERS FOR PROCESSING TRANSMISSIONS FROM TWO DIFFERENT TRANSMITTING RADIOS - A method and receiver apparatus for a receiving radio unit are disclosed for use in a wireless communication system for processing transmissions from different radio units at the receiving radio unit. A first transmitting radio unit transmits first audio information (e.g., a first audio encoded frame) in a first time slot, and a second transmitting radio unit then transmits second audio information (e.g., a second audio encoded frame) in a second time slot. The receiving radio unit receives radio frequency (RF) signals comprising a first bit stream corresponding to the first audio information, and a second bit stream corresponding to the second audio information. Based on the first bit stream and the second bit stream the receiving radio unit generates a single analog audio signal that comprises combined audio information corresponding to the first audio information and the second audio information. | 04-12-2012 |
20120093139 | Methods, Apparatuses and Computer Program Products - There is provided an apparatus including a processor configured to apply space-code block coding to control symbols to be transmitted from at least two transmit antennas; a processor configured to map the space-code block coded control symbols on at least two different physical uplink control channels or cyclic shifts of the same base sequence; and a transmitter configured to transmit the cyclically shifted sequences modulated by the space-code block coded control symbols simultaneously from the at least two transmit antennas. | 04-19-2012 |
20120106522 | DISTRIBUTED MEDIUM ACCESS PROTOCOL FOR WIRELESS MESH NETWORKS - This invention defines a medium access protocol for the support of mesh networking in wireless communications. It defines a phase for intra-cell and a phase for inter-cell traffic. During the inter-cell traffic a beacon phase is used for the reservation of transmissions. In this phase also information about the mesh topology is included and parallel transmission are supported. | 05-03-2012 |
20120113963 | Method and Arrangement for Transmissions in VAMOS Capable Wireless Communication Systems - In a method for transmitting information from a radio base station node to a first mobile station and a second mobile station paired on and sharing a same carrier frequency, TDMA frame and time slot in a wireless communication system, wherein said first and second mobile stations are allocated on a first and second VAMOS sub-channel respectively, transmitting (S | 05-10-2012 |
20120127971 | Computer-Implemented Method And System For Automatic Generation Of Time Slot Allocation For A Wireless Control Loop - A computer implemented method for providing a time slot allocation in a wireless communication schedule for monitoring and control of a control loop in an industrial process, the industrial process having at least one control task and a plurality of wirelessly enabled field devices. The method includes importing dependency information between at least two field devices of at least one control loop, automatically converting the dependency information into a communication schedule and allocating time slots in the communication schedule to one or more field devices of the at least one control loop dependent at least on a dependency relationship between at least two field devices. A system and a computer program product are also disclosed. | 05-24-2012 |
20120127972 | SYSTEMS AND METHODS FOR POLLING FOR DYNAMIC SLOT RESERVATION - Embodiments include systems and methods for allocating time to a plurality of devices in the network of a piconet controller. Embodiments comprise selectively directing a steerable antenna beam of the piconet controller to a plurality of devices in succession during a polling process to receive time allocation requests from one or more of the devices. Subsequent to the polling process, a grant procedure is performed wherein a device is granted permission to transmit in a subsequent time interval. Also during the grant process, one or more devices are instructed to receive from the device granted permission to transmit. The polling process and the grant process occur in the same superframe. | 05-24-2012 |
20120140747 | WIRELESS COMMUNICATION SYSTEM - The wireless communication system of the present invention has a first communication mode in which a center module preferentially allocates a slot to communication data of a calling sub station according to a priority of the calling sub station, and a second communication mode in which the center module allocates the slot to the communication data received from the calling sub station irrespective of the priority of the calling sub station. The center module determines which sub station can make a call to which sub station, each sub station transmits identification information to the center module, and the center module identifies the transmitting sub station based on the identification information, determines which sub station the identified sub station can make a call to, and allocates the slot to communication between the sub station determined to be capable of making a call and the transmitting sub station. | 06-07-2012 |
20120147861 | TDMA CONTROLLER FOR A WIRELESS COMMUNICATION SYSTEM AND METHOD OF OPERATING SAME - A wireless device includes a base counter configured to generate counter signals synchronized with timing of a base station. A generation module is configured to generate a timing control signal in response to the counter signals. A transceiver is configured to, based on the timing control signal, (i) transmit data on a time division multiple access channel, and (ii) transmit the data in a first time slot without transmitting data in a second time slot. The first time slot is allocated by the base station for the wireless device. The second time slot is allocated by the base station for a second station. The wireless device is separate from the second station. The second time slot is subsequent to and abuts the first time slot. | 06-14-2012 |
20120155441 | Method for Allocating Resources, in a Mobile and Meshed Communications Network, with Limitation of the Inter-Cluster Interference, System and Network Implementing the Method - Allocation of communications resources, in a mobile meshed network structured as a plurality of clusters each comprising at least one node, includes: generating a chart of configurations each comprising a different allocation priority index for each time slot of the time window, the indices varying from 0 to n−1; assigning a configuration,—among the generated set of configurations, to each cluster such that a predetermined number N | 06-21-2012 |
20120163351 | METHOD OF ALLOCATING AND WITHDRAWING TIME SLOT USING POSITION MOVEMENT OF TIME SLOT AND TDMA COMMUNICATION SYSTEM USING THE SAME - The present invention relates to a TDMA communication system using the position movement of a time slot. The TDMA communication system includes a TDMA network, a network central station, and terminals. The network central station includes a receiver for receiving transmission cycle information and time slot allocation requests from the terminals, a network central station controller for writing a degree of identification for the number of cases of time slot allocation according to the information transmission cycle, searching for an allocable optimum time slot, and withdrawing a time slot from a terminal which has finished communication, a time slot management unit for allocating a time slot to the terminal based on degree of identification for the number of cases of time slot allocation written by the network central station controller, and a transmitter for transmitting information about the allocated time slot to the terminal. | 06-28-2012 |
20120170555 | Method and Apparatus for Improving a Transmission Signal Characteristic of a Downlink Signal in a TDMA Wireless Communication System - The invention relates to improving the quality of a received downlink signal in a time division multiple access wireless cellular communications network. The method of the invention comprises measuring a signal quality characteristic at a user equipment and comparing this to a threshold to determine if a desired signal quality level exists. If so then a certain level or type of service on the downlink can be effected. If not, the method comprises identifying an interferer signal or signals and removing at least one of such interferer signals by arranging for it to either not be transmitted on the same TDMA timeslot as the downlink signal or to be transmitted at a lower power, for example, in said timeslot. | 07-05-2012 |
20120177014 | Transmitter and Data Transmission Method - A transmitting terminal and a method for transmitting data are provided by the present invention, in which a multiple access mode is extended when transmitting upstream data. The method comprises: when the transmitting terminal transmits the upstream data, if the transmitting terminal has higher requirement on link performance than on time domain coverage, selecting the multiple access mode of OFDMA; and if the transmitting terminal has higher requirement on time domain coverage than on link performance, selecting the multiple access mode of SC-FDMA, and after selecting the multiple access mode, the transmitting terminal processing and then transmitting the data to be transmitted. The invention is adopted to solve the problem that a single multiple access mode cannot be well suitable in the related art, ensure the link performance of OFDMA, be beneficial to enhance the throughput of the entire network. | 07-12-2012 |
20120177015 | Wireless Network With Simultaneous Uplink Transmission of Independent Data From Multiple Client Stations - A wireless network comprises R client stations that respectively generate simultaneous uplink transmission (SUT) data, where R is an integer greater than one. An access point (AP) receives SUT data from each of the R client stations during an SUT period. | 07-12-2012 |
20120201231 | TDMA-BASED WIRELESS NETWORKS - According to a first aspect of the present invention there is provided a method for enabling two or more TDMA-based wireless networks to share a communication channel, each wireless network implementing superframes. The method comprises within each network, implementing active superframes separated by one or more inactive superframes and only implementing active superframes when the other networks are implementing inactive superframes, wherein a network only communicates during that networks active superframes and does not communicate during that networks inactive superframes. | 08-09-2012 |
20120213210 | QUALITY OF SERVICE (QoS) FOR SATELLITE COMMUNICATIONS NETWORK - A device stores a traffic management profile for satellite network traffic that provides default percentages for classes of traffic that can pass when contention for limited bandwidth exists. The device receives packets having class markings and designated for transmission over a Demand-Assigned Time Division Multiple Access (DA-TDMA) network and identifies each of the received packets as one of a transmission control protocol (TCP) packet or a non-TCP packet. The device assigns the received packets to different queues based on the class markings and the identifying as a TCP packet or non-TCP packet, and determines available transmission bandwidth for a particular time slot of the DA-TDMA network associated with the device. The device also schedules packets from the different queues based on the default percentages in the traffic management profile and the transmission bandwidth for the particular time slot. | 08-23-2012 |
20120236834 | POWER OPTIMIZATION FOR SMART PHONE APPLICATIONS - A method, an apparatus, and a computer program product for wireless communication arc provided. The apparatus may be a UE. The UE may enter a gated mode including a first time period followed by a second time period, prevent application initiated data generated during the first time period from being transmitted over-the-air during the first time period, and permit over-the-air transmission during the second time period of the application initiated data generated during the first time period. | 09-20-2012 |
20120275441 | METHOD AND APPARATUS FOR ALLOCATING COMMUNICATION RESOURCES TO COMMUNICATE DATA IN A RADIO COMMUNICATION SYSTEM - Apparatus and method for allocating communication resources in a data radio communication system, such as an MAIO (Mobile Allocation Index Offset) communication system, e.g., a communication system that provides for Enhanced Data for GSM Evolution (EDGE) data services. A multi-carrier radio resource control logic element includes an analyzer that analyzes communication resource requirements to carry out a communication service. A resource allocator allocates communication resources to be used by which to communicate the data. The communication resources are allocated across a plurality of radio carriers such that resources are allocated, during a particular time period, upon a single radio carrier of the plurality of radio carriers. | 11-01-2012 |
20120287913 | TRANSMISSION SCHEDULING APPARATUS AND METHOD IN WIRELESS MULTI-HOP NETWORK - In a wireless multi-hop network, a transmission scheduling apparatus calculates a transmission demand of every node within the wireless multi-hop network, and allocates a time slot to each node by using the transmission demand of each node. | 11-15-2012 |
20120307812 | MOBILE COMMUNICATION SYSTEM, BASE STATION, MOBILE STATION, AND WIRELESS COMMUNICATION METHOD - A base station ( | 12-06-2012 |
20120327918 | TIMING ADJUSTMENT FOR EXTENDING THE WIRELESS RANGE OF A VEHICLE TELEMATICS UNIT - A system and method of extending the range of a vehicle telematics unit includes determining that a vehicle telematics unit is outside of a geographic range beyond which time division multiple access (TDMA) transmissions sent from the vehicle telematics unit to a base station arrive at the base station after a time slot allocated to the vehicle telematics unit in a time frame has passed; calculating a time delay that causes the TDMA transmissions to arrive at the base station in the allocated time slot of a subsequent time frame; and sending TDMA transmissions from the vehicle telematics unit at a time determined using the time delay. | 12-27-2012 |
20130034088 | ENABLING MULTIPLE TRANSCEIVERS OPERATED ACCORDING TO TIME-DIVISION MULTIPLE ACCESS TECHNIQUES TO TRANSMIT AND RECEIVE USING A SINGLE ANTENNA - A device includes multiple transceivers, a coupling block and an antenna. The transceivers operate according to time-division multiple access (TDMA) techniques. The coupling block is designed to enable the multiple transceivers to transmit or receive corresponding signals using the antenna. The multiple transceivers include a first transmitter and a second transmitter. The first transmitter is connected to the antenna via a first coupling network. The second transmitter is connected to the antenna via a series connection of a second coupling network and at least a portion of the first coupling network. Other transmitters are connected to the antenna via a series arrangement of at least a portion of the first coupling network and corresponding coupling networks. | 02-07-2013 |
20130034089 | MOBILE STATION APPARATUS, COMMUNICATION METHOD, INTEGRATED CIRCUIT, RADIO COMMUNICATION SYSTEM, AND CONTROL PROGRAM - In a radio communication system including a plurality of mobile station apparatuses and a base station apparatus, a physical uplink reference signal and a physical uplink control channel signal are efficiently controlled and the mobile station apparatus appropriately transmits a signal. The mobile station apparatus includes: a radio resource control unit | 02-07-2013 |
20130051374 | SYSTEMS AND METHODS FOR ENHANCED FLEXIBLE TIMESLOT ASSIGNMENT - A mobile station in a communications system includes hardware and software stored on a tangible computer readable medium that, during operation, cause the mobile station to indicate one or more multislot classes for the mobile station to a device on a network. Parameters applicable to enhanced flexible timeslot assignment operation are determined based on the parameters of the one or more indicated multislot classes. | 02-28-2013 |
20130058318 | METHOD AND APPARATUS FOR DEVICE SYNCHRONIZATION AND POWER CONSERVATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention provides a method and apparatus for device synchronization and power conservation in a wireless communication system. In one embodiment, a method of a communication device for device synchronization and conserving power includes determining one or more device parameters in a wireless communication system, where the one or more device parameters are indicative of one or more time slots and at least one additional guard slot required during data transaction. The method also includes forming a connection request including the one or more device parameters, and communicating the connection request to a controller in the wireless communication system. Moreover, the method includes receiving a connection assignment frame including a device allocation interval from the controller based on the one or more device parameters, wherein the device allocation interval includes the one or more time slots and the at least one additional guard slot allocated to the communication device for data transaction. | 03-07-2013 |
20130070736 | DEVICE AND METHOD FOR EXTENDED PTCCH SPACE - An MS, for a GSM/EDGE network, arranged to, as a first alternative, use every 13 | 03-21-2013 |
20130077608 | Time division multiple access (TDMA) media access control (MAC) adapted for single user, multiple user, multiple access, and/or MIMO wireless communications - Time division multiple access (TDMA) media access control (MAC) adapted for single user, multiple user, multiple access, and/or MIMO wireless communications. Various com systems may include smart meter stations (SMSTAs) and/or wireless stations (STAs). Appropriate coordination is made with respect to such communication devices to ensure appropriate uplink (and/or downlink) communications between a network manager or coordinator (e.g., an access point (AP)) and the SMSTAs and/or STAs. With respect to SMSTAs, the relative duration of time that such communication devices are awake and operative versus asleep (or in a reduced power and/or functionality state) can be significant. Certain implementations may include a relatively large number of such communication devices (e.g., 10s, 100a, 1000s, or more), and appropriate coordination and scheduling of such communications to/from them is made using one or more variations of TDMA signaling (e.g., including different respective service periods (SPs), communication medium access operational modes, adaptation thereof, etc.). | 03-28-2013 |
20130100942 | MOBILE AD HOC NETWORK WITH DYNAMIC TDMA SLOT ASSIGNMENTS AND RELATED METHODS - A mobile ad hoc network (MANET) may include mobile nodes, each having a wireless transceiver and a controller cooperating with wireless transceiver. The controller may be configured to operate in a geographic area using a time division multiple access (TDMA) protocol and based upon a TDMA epoch including TDMA time slots. The controller may also be configured to dynamically divide into first type mobile nodes and second type mobile nodes based upon a current topologic density in the topologic area relative to a topological density threshold so that each first type mobile node has a periodic TDMA time slot allocated in the TDMA epoch and so that each second type mobile node contends for contention interval TDMA time slots in the TDMA epoch. | 04-25-2013 |
20130121320 | SINGLE ANTENNA INTERFERENCE CANCELLATION IN A MOBILE COMMUNICATION SYSTEM - Methods, apparatus and articles of manufacture for single antenna interference cancellation in a mobile communication system are disclosed. An example method disclosed herein for a wireless device comprises determining a number of bursts to be received in a time division multiple access frame comprising a plurality of timeslots, and when the number of bursts exceeds a threshold number of bursts for which single antenna interference cancellation can be performed, performing single antenna interference cancellation for a subset of the bursts received in the time division multiple access frame. | 05-16-2013 |
20130136112 | METHOD AND APPARATUS FOR DATA AND CONTROL MULTIPLEXING - System(s) and method(s) are provided for transmitting data code symbols and control code symbols spanning disparate transmission time intervals in the uplink. Data and control symbols that overlap in time-domain within a transmission time interval are multiplexed and transmitted employing resources scheduled for data transmission, whereas data and control code symbols that are not multiplexed are transmitted in respective allocated resources. Multiplexing in conjunction with localized and distributed resource scheduling preserves the single-carrier characteristics of a single-carrier frequency division multiple access system. | 05-30-2013 |
20130136113 | COMMUNICATION NETWORK AND METHOD FOR OPERATING A COMMUNICATION NETWORK - A communication network, wherein the network includes a plurality of communication elements that function as transmitters and/or receivers, in particular base stations and operating nodes being associated to at least one of the base stations, wherein the communication between the transmitters and the receivers is performed by way of generating and transmitting signals based on a multi-carrier modulation with a number of N subcarriers around a carrier frequency f | 05-30-2013 |
20130142180 | Wireless Communication Method And System With Collision Avoidance Protocol - A method for providing wireless communication between a source node and a destination node in a wireless network wherein the wireless network uses a time division multiple access (TDMA) protocol. One or more dedicated TDMA transaction timeslots are arranged in a superframe. The superframe includes at least one dedicated transaction slot forming a hybrid protocol with two or more shared transaction slots per superframe. The method is of particular advantage when practised with a WirelessHART protocol wireless sensor network and when used for monitoring and control equipment and processes in an industrial installation. A computer program, and a wireless node and a wireless network using the inventive method are also disclosed. | 06-06-2013 |
20130170480 | UPLINK RANDOM ACCESS DATA CHANNEL WITH HARQ - Devices and methods are provided for managing random access data channels in a wirelessly-enabled communications environment. An uplink (UL) random access (RA) channel is implemented to send data to an access point (AP) without requiring a UL allocation grant message to be sent on the downlink (DL) for UL timing adjustments. A mobile station (MS) sends a chosen sequence to the AP to indicate that a RA data transmission is being requested. The location and number of radio resources that are used for the UL RA data transmission are determined by the choice of a RA sequence initially sent by the MS. If UL timing has not been established, the AP is able to determine the timing of the UL RA data transmissions by deriving the offset of the initial RA request sequence transmission from the MS. | 07-04-2013 |
20130223417 | COMMUNICATION NETWORK FOR DETECTING UNCOOPERATIVE COMMUNICATIONS DEVICE AND RELATED METHODS - A communication network may be uncooperative with an uncooperative communications device. The communication network includes mobile wireless communications devices including a collection device and forward devices. Each forward device is configured to detect a received signal characteristic associated with the uncooperative communications device, and transmit the received signal characteristic to the collection device. The collection device is configured to selectively schedule reception of the received signal characteristic based upon a timing of communications among the forward devices, and determine a parameter associated with the uncooperative communications device based upon the received signal characteristic. | 08-29-2013 |
20130223418 | RF Sniffer - Systems and methods wirelessly communicate data over a plurality of cellular channels by sniffing for available frequency channels; requesting an allocation of preferably adjacent cellular frequency channels from a mobile station to a base station; and allocating available frequency channels in response to the request from the mobile station. | 08-29-2013 |
20130250928 | SCHEDULING IN A MULTI-HOP WIRELESS NETWORK - Various techniques are disclosed for assigning timeslots in a multihop wireless network. One such method includes, for each node for uplink timeslot assignments, assigning a higher hop count node to a timeslot that is to occur before all time slots assigned to lower hop count nodes. The method further includes, for each node for downlink timeslot assignments, assigning a lower hop count node to a timeslot that is to occur before all time slots assigned to higher hop count nodes. | 09-26-2013 |
20130250929 | Uplink Sounding Transmission with Carrier Aggregation - A wireless device receives message(s) configuring transmissions of sounding reference signals on a secondary cell in a secondary cell group. The wireless device receives an activation command to activate the secondary cell. The wireless device transmits one or more of the sounding reference signals on the secondary cell after applying a timing advance command to the secondary cell group. The wireless device is configured to not transmit any of the sounding reference signals on the secondary cell during a period between receiving the message(s) and applying the timing advance command to the secondary cell group. | 09-26-2013 |
20130259014 | Location Based Data Delivery Schedulers - Packets are transmitted by a server to mobile nodes in a coverage area of a wireless network using a coverage and reliability map, which indicates qualities and reliabilities of links between the server and the nodes. When a new packet is received in the server, the server transmits the packet if a current load of the packets including the new packet is less than a peak load constraint. Otherwise, the new packet is delayed for one time slot. | 10-03-2013 |
20130265994 | Information feedback method and device for uplink closed loop transmission diversity - The present disclosure discloses an information feedback method for uplink closed loop transmission diversity, which includes: a base station allocates each Fractional Dedicated Physical Channel (F-DPCH) to at least one user; and the base station takes at least one F-DPCH as a feedback channel and arranges information of different users in each said F-DPCH by time division multiplexing, wherein information of at least one user in the F-DPCH includes feedback information of the uplink closed loop transmission diversity and an uplink Transmission Power Control (TPC) command. The present disclosure further discloses an information feedback device for uplink closed loop transmission diversity. Through the solution of the present disclosure, information feedback of the uplink closed loop transmission diversity can be implemented, when the information is a weight, the problem of weight feedback of the uplink closed loop transmission diversity is solved, and a user side of a High Speed Uplink Packet Access (HSUPA) system is facilitated to complete an operation of transmission diversity. | 10-10-2013 |
20130265995 | METHOD AND APPARATUS FOR SIGNALING TO A MOBILE DEVICE WITH SET OF TRAINING SEQUENCE CODES TO USE FOR A COMMUNICATION LINK - The present patent application improves DARP by allowing multiple users on one time slot (MUROS). It comprises means and instructions for signaling training sequence set information to a remote station, comprising receiving signaling from a remote station indicating if a new set of training sequences is supported, and using a channel description to signal the training sequence set to be used by the remote station for a communication channel being established. Other aspects, embodiments, and features are also claimed and described. | 10-10-2013 |
20130265996 | METHOD AND APPARATUS FOR SIGNALING TO A MOBILE DEVICE WITH SET OF TRAINING SEQUENCE CODES TO USE FOR A COMMUNICATION LINK - The present patent application improves DARP by allowing multiple users on one time slot (MUROS). It comprises means and instructions for signaling training sequence set information to a remote station, comprising receiving signaling from a remote station indicating if a new set of training sequences is supported, and using a channel description to signal the training sequence set to be used by the remote station for a communication channel being established. Other aspects, embodiments, and features are also claimed and described. | 10-10-2013 |
20130308616 | Time Slot Sharing in TDMA Communication System - The embodiments of the present invention relate to a method in a transmitting unit; a method in a receiving unit; a transmitting unit and a receiving unit, in a wireless communication network employing Time Division Multiple Access, TDMA, for transmitting and, receiving and demodulating data, respectively, the data being transmitted in a signal comprising a burst, wherein bursts relating to N | 11-21-2013 |
20130322414 | METHOD AND APPARATUS FOR CONFIRMING DELIVERY OF GROUP DATA TO RADIO COMMUNICATION DEVICES IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for confirming delivery of group data to a plurality of radio communication devices in a wireless communication system. The wireless communication system includes a plurality of radio communication devices in communication with a sender. In operation, the sender sends group data to the plurality of radio communication devices and further determines a call hang time sufficient to contain a dedicated acknowledgment slot for each of the plurality of radio communication devices. The sender reserves an acknowledgment slot in the determined call hang time for each radio communication device and further sends an acknowledgment polling signal to each radio communication device, where the acknowledgment polling signal identifies the respective acknowledgment slot that is reserved for each radio communication device to acknowledge receipt of the group data. The sender accordingly receives an acknowledgment from the radio communication devices during its respective reserved acknowledgment slot. | 12-05-2013 |
20130336303 | A TDMA-BASED COMMUNICATION METHOD AND SYSTEM - A TDMA-based communication method for enabling communication between a base station and a client, the base station and the client each comprising a clock for synchronising communications, the method comprising: allocating a TDMA channel to said client; causing a transceiver of the client to operate in a communication mode during client timeslots making up said allocated channel and to operate in a sleep mode at other times; causing a transceiver of said base station to begin operating in a communication mode with said client on said channel in advance of each said client timeslot and/or to continue operating in a communication mode with said client after each said client timeslot. | 12-19-2013 |
20140010218 | Methods and Arrangements for Scrambling a Timing Advance Value in a Wireless Communication System - Methods and arrangements ( | 01-09-2014 |
20140036891 | Resource Management for a Mobile Telephone Terminal - A resource management unit for a mobile telephone terminal, with the terminal comprising radio transmission/reception means for transmitting and receiving radio frequency signals corresponding to bursts of symbols during allocated time slots, and a device able to operate in a first mode and in a second mode, said device interfering less with the transmission/reception of radio frequency signals when it is in the first mode than when it is in the second mode. The resource management unit is able to cause the device to change from one of the first and second modes to the other of the first and second modes during the same time slot. | 02-06-2014 |
20140050207 | COMBINED SIMULCASTING AND DEDICATED SERVICES IN A WIRELESS COMMUNICATION SYSTEM - An efficient method for providing both dedicated and simulcast services over a common wireless infrastructure is described. The services can be available to a single terminal as well as to a multiplicity of terminals simultaneously. The method uses time division multiplexing and orthogonal frequency division multiple access for simulcasting information and transmitting dedicated message information from a plurality of base stations forming a cellular pattern over the same wireless frequency channel. The method comprises the steps of constructing frames for transmission by the plurality of base stations comprising control information, simulcast information and dedicated message information within predetermined time slots of the frames and allocating the simulcast information and the dedicated message information to time slots of the same frame predetermined by the control information of the frame. The underlying modulation technology used is OFDM and thereby the channel delay-dispersion is minimized. | 02-20-2014 |
20140079040 | Time Slot Synchronized, Flexible Bandwidth Communication System - One or more frame slots to each transceiver are allocated for communication within each message cycle. The number of frame slots allocated can be dynamically adjusted to accommodate variable traffic loads per transceiver, and an offset of the frame slots within the message cycle is preferably predefined to provide a uniform distribution among the transceivers. The design of the transceiver is independent of the particular application, having at least one programmable parameter that controls the number of frame slots allocated within the message cycle. By controlling the number of frame slots allocated to a transceiver, the amount of inactive time, and hence battery life, can be controlled. When a conflict occurs among multiple transceivers having pending messages at the same frame slot, the allocation of the frame slot to a transceiver is based at least in part on the resultant lag time to each transceiver. | 03-20-2014 |
20140079041 | Precoding for MIMO - The embodiments herein relate to a method in a transmitter ( | 03-20-2014 |
20140092883 | METHOD AND SYSTEM FOR ASSIGNING SLOT RESERVATIONS TO SUBSCRIBER RADIOS IN A TELECOMMUNICATIONS SYSTEM - A method for assigning slot reservations to subscriber radios in a TDMA communications system, where data is arranged into a series of superframes, includes an inbound signaling protocol having a plurality of inbound transmission slots. An outbound signaling protocol includes an inbound reservation scheduling slot, which includes a plurality of subscriber access code fields. Each subscriber access code field corresponds to at least one of the inbound transmission slots. Each subscriber access code field may store a subscriber access code associated with a subscriber radio. The inbound reservation scheduling message includes a subscriber access code in at least one of the subscriber access code fields. As such, the subscriber radio associated with the subscriber access code may transmit data during the inbound transmission slot corresponding to the subscriber access code in which the subscriber access code field is stored. | 04-03-2014 |
20140105194 | METHOD AND APPARATUS FOR MORE EFFICIENT SHARING OF SYNCHRONIZED DIRECT MODE TIMESLOTS - A method and device for sharing synchronized direct mode time division multiple access (TDMA) timeslots among a plurality of direct mode radios includes monitoring, by a first direct mode radio, other radios' usage of a plurality of available timeslots on a direct mode radio frequency (RF) and, for each received new transmission, storing an indication of the timeslot used by the new transmission and storing a system partitioning identifier associated with the new transmission. Dynamically determining, by the first radio and as a function of the monitoring, a first preferred transmit timeslot determined to be less likely to interfere with the other direct mode radios. Responsive to detecting a request to transmit a new direct mode call, first determining if the first preferred transmit timeslot is available, and if so, transmitting the new call in the first preferred transmit timeslot on the direct mode radio frequency. | 04-17-2014 |
20140119352 | INTERLEAVING APPARATUS AND WIRELESS COMMUNICATION SYSTEM - An interleaving apparatus includes an interleaver for concurrently sorting bits of input data according to the predetermined interleave pattern; a switch including an input terminal supplied with an input signal subject to an interleave process, an input terminal supplied with a signal output from the interleaver, an output terminal for outputting an output signal, representing the result of interleaving completed on the input signal, and an output terminal for outputting a signal input to the interleaver, thus switching connection between the input terminals and the output terminals; and a controller for controlling the switch to use the interleaver once or repeatedly use it multiple times in response to each of interleave patterns. | 05-01-2014 |
20140169347 | Mobility Management in a Multi-Subscriber Identity Mobile Device - The invention concerns a method of scheduling the reception of at least one System Information block by a mobile device being adapted to be associated with at least a first Subscriber Identity and a second Subscriber Identity, the System Information block being intended to the second Subscriber Identity and being broadcasted with a first periodicity over a network by at least one base station of the network in the form of a plurality of bursts, according to a given frame structure having TDMA frames, each TDMA frame comprising a plurality of time gaps, at least one first time gap of a first TDMA frame being allocated to communication activity on the first Subscriber Identity, at least one burst of the System Information block being broadcasted over the network during a second time gap of a second TDMA frame. If the first TDMA frame and the second TDMA frame are one and the same TDMA frame within the frame structure but if the second time gap is distinct from the first time gap within the TDMA frame, or if the second TDMA frame is distinct from the first TDMA frame, then the method comprises allocating the second time gap of the second TDMA frame to receive the burst of the System Information block. | 06-19-2014 |
20140185596 | SYSTEMS AND METHODS FOR TIME-REVERSAL DIVISION MULTIPLE ACCESS WIRELESS BROADBAND COMMUNICATIONS - There is provided a communication system including a transmitting section and a receiving section which includes a plurality of receivers. The transmitting section includes a communication unit which receives a plurality of signals respectively from the plurality of receivers, and stores a plurality of time-reversed signals corresponding to the received plurality of signals with respect to the plurality of receivers, and a first conversion unit which converts, by a first factor, a plurality of information sequences to be respectively transmitted to the plurality of receivers and forward the plurality of converted information sequences to the communication unit. The communication unit generates, based on the plurality of converted information sequences, a plurality of output signals to be respectively transmitted to the plurality of receivers, each of the plurality of the output signals including a location-specific signature unique to the corresponding receiver. | 07-03-2014 |
20140192790 | HIGH PRIORITY SERVICE SENDING AND RECEIVING METHOD AND DEVICE IN DIRECT MODE - A high priority service sending method and device in a direct mode, and a high priority service receiving method and device in a direct mode. The receiving method includes: after sending a voice frame in a voice call sending state, a user terminal receiving and detecting a priority frame in another time slot with respect to the time slot occupied by the voice call; and if the priority frame is detected, then stopping the voice call and receiving a high priority service frame in the other time slot. Using the present invention can enable an interphone in a transmitting state in a direct mode to send or receive a high priority service as well. | 07-10-2014 |
20140198779 | METHOD AND APPARATUS FOR SYNCHRONIZING TIMING OF A FIRST STATION TO TIMING OF A SECOND STATION FOR TRANSMISSION OF DATA IN SEQUENTIAL SLOTS OF A TIME DIVISION MULTIPLE ACCESS CHANNEL - A first station including a transceiver, a control module, first counters, and a generation module. The transceiver receives information from a second station. The control module generates an adjustment signal based on the information to synchronize the first station to the second station. The first counters, based on the adjustment signal, generate respective count values. The first counters comprise a first counter and second counters. The count value of the first counter is indicative of an amount of time within a first slot of a time division multiple access (TDMA) channel. Each of the count values of the second counters is based on one of the other count values of the first counters. The generation module, in response to the count values of the first counters, generates a control signal. The transceiver, based on the control signal, transmits data in a second time slot on the TDMA channel. | 07-17-2014 |
20140204923 | Method and Arrangement in a Wireless Communication System - A radio network node for handling data streams from a user equipment is provided. The radio network node comprises a first receiving interface and a second receiving interface. The radio network node creates ( | 07-24-2014 |
20140233543 | Transmission Method and Related Base Station - The invention relates to transmission from a base station to a receiver, the base station comprising first radiating means arranged for transmitting according to an antenna pattern with respect to the receiver and further comprising second radiating means arranged for transmitting according to the same antenna pattern as the first radiating means with respect to the receiver, the transmissions of the first and second radiating means being time shifted by a determined duration. | 08-21-2014 |
20140247818 | BEAMFORMING - The embodiments herein relate to a method in a transmitter for transmitting a data burst to a receiver in a system supporting GSM and/or EGPRS. The transmitter is arranged to make its transmissions with or without beamforming. The transmitter comprises at least two Tx antennas. When the data burst is beamformed, the transmitter transmits the data burst to the receiver through at least one of the at least two Tx antennas. The data burst comprises a common training sequence. When the data burst is non-beamformed, the transmitter transmits the data burst to the receiver through each of the at least two Tx antennas. The data burst comprises a respective antenna specific training sequence. | 09-04-2014 |
20140254573 | Methods and Arrangements for Allocation of Radio Resources - The invention relates to a method for allocating a common radio resource for simultaneous transmission of data streams in multiple pairs of communication nodes in a multi-node wireless network. The invention also relates to a method of assessing radio resource isolation in a multi-node wireless network. The inventive methods include transmission ( | 09-11-2014 |
20140269642 | SYSTEMS AND METHODS FOR EXPLOITING INTER-CELL MULTIPLEXING GAIN IN WIRELESS CELLULAR SYSTEMS VIA DISTRIBUTED INPUT DISTRIBUTED OUTPUT TECHNOLOGY - A multiple antenna system (MAS) with multiuser (MU) transmissions (“MU-MAS”) exploiting inter-cell multiplexing gain via spatial processing to increase capacity in wireless communications networks. | 09-18-2014 |
20140293976 | POWER-SAVING HUB MESSAGES IN WIRELESS BODY AREA NETWORKS - A time division multiple access (TDMA) media access control (MAC) protocol is provided for wireless body area networks (BANs). In particular, in some embodiments the described network devices utilize a reservation-based power saving polling (RESP) MAC protocol for communication. The RESP MAC can be configured to provide methods for emergency event handling of both bursty data and streaming data. | 10-02-2014 |
20140301377 | WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION SYSTEM - In a wireless communication system based on a time division multiple access method such as cordless telephone systems including a door camera, voice communication is performed in a bi-directional communication by using a paired time slots, and image communication is performed in a uni-directional communication by using both of paired time slots. One of the paired time slots may be used for transmitting a control signal such as an image data resend control signal. | 10-09-2014 |
20140321443 | SLOT SEGREGATION FOR SUPPORTING MULTIPLE COMMUNICATION PROTOCOLS IN AN INDUSTRIAL WIRELESS NETWORK - A method includes dividing a Time Division Multiple Access (TDMA) structure into a plurality of first time slots and a plurality of second time slots. The first and second time slots are allocated to communications using first and second protocols, respectively. The method also includes communicating with at least one first wireless device using the first protocol during the first time slots. The method further includes communicating with at least one second wireless device using the second protocol during the second time slots. | 10-30-2014 |
20140348146 | TRANSITION PERIOD FOR DUAL CONNECTIVITY - Methods and apparatus, including computer program products, are provided for dual connectivity. In one aspect there is provided a method. The method may include alternating access, by a user equipment during a transition between a first base station and a second base station, to the first base station and the second base station, wherein the alternating is performed during the transition in accordance with a schedule. Related apparatus, systems, methods, and articles are also described. | 11-27-2014 |
20140369328 | APPARATUS AND METHOD FOR OPERATING ANALOG BEAM IN A BEAM DIVISION MULTIPLE ACCESS SYSTEM - A method and apparatus for operating an analog beam is provided. The apparatus includes a hybrid beam-forming structure having a small number of digital chains provided in a digital stage and a signal is transmitted and received in a Time Division Multiple Access (TDMA) scheme. The apparatus includes an analog beam-forming operating unit configured to change the analog beam for a counterpart device for which use of a next frame is to be permitted, upon receiving a request for using the next frame from at least one of multiple devices that transmit and receive signals in units of frames and a communication unit configured to transmit information indicating that the analog beam is changed to permit the use of the next frame by the counterpart device to the multiple devices. | 12-18-2014 |
20140376527 | COMMUNICATION SYSTEM, COMMUNICATION TERMINAL, AND COMMUNICATION METHOD - A terminal mode of at least a part of terminals in a centralized control area and terminals in a distributed control area is set to a time division control mode for performing communication in a time division manner. The terminals in the centralized control area, the terminal mode of which is other than the time division control mode, are set in a centralized control mode. The terminals, the terminal mode of which is other than the time division control mode, are set in a distributed control mode. The terminals set in the time division control mode perform transmission in a communication period in which communication is permitted. The terminals set in the centralized control mode and the terminals set in the distributed control mode perform communication without depending on the communication period. | 12-25-2014 |
20150049745 | TIME-REVERSAL WIRELESS SYSTEMS HAVING ASYMMETRIC ARCHITECTURE - In an asymmetric time-reversal wireless system, a base station includes an input circuit configured to, during a hand-shake period, receive a channel response signal derived from a probe signal sent from a first terminal device to the apparatus through multiple wireless propagation paths, and during an uplink transmission period, receive combined signals that include a signal from the first terminal device and a signal from a second terminal device. The base station includes a data processor configured to calculate a signature waveform for the first terminal device based on the channel response, and determine the signal sent from the first terminal device during the uplink transmission period based on the combined signals and the signature waveform for the first terminal device. | 02-19-2015 |
20150055637 | MANAGEMENT APPARATUS AND COMMUNICATION SYSTEM - A management apparatus, which manages a wireless network constituted by a plurality of wireless communication devices each capable of performing a wireless communication using TDMA system, is characterized by comprising an extended link management unit that manages an extended link obtained by setting, to a link for which a channel and time slots to be used for wireless communications using the TDMA system are specified and for which a communication direction is determined, attribute information that characterizes the wireless communications performed by the wireless communication devices by use of the link. | 02-26-2015 |
20150055638 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION METHOD - A wireless communication apparatus, a wireless communication system, arid a wireless communication method enabling any plurality of apparatuses to engage in time division multiplex communication for communicating a plurality of data even if not all apparatuses in the network are accurately synchronized, perform a time division multiplex connection method of an autonomous distributed network that performs a continuous receiving (scan) operation over a frame period so as to obtain a grasp of the wireless communication apparatuses located at the neighborhood at predetermined periods, that includes the steps of receiving beacon signals from other wireless communication apparatuses to obtain a grasp of the wireless communication apparatuses that they are communicable with, calculating the reception slot of the wireless communication apparatus from the received beacon information, setting its own reception slot so as not to collide with the set situation thereof, and forming network autonomously engaging in time division, multiplex communication with other wireless communication apparatuses located at the neighborhood | 02-26-2015 |
20150063326 | METHOD AND APPARATUS FOR WIRELESSLY TRANSACTING SIMULTANEOUS VOICE AND DATA ON ADJACENT TIMESLOTS - A wireless method, apparatus, and system provide simultaneous transacting of voice and data on adjacent timeslots through a combination of channel access rules and sacrificing small audio portions when required. This includes wirelessly operating on at least two timeslots which are adjacent to one another, operating voice on a first timeslot of the at least two timeslots and monitoring a second timeslot of the at least two timeslots for data, and, responsive to a data transmission request and receiving voice on the first timeslot, discarding a portion of the voice in the first timeslot to provide a larger guard time for programming between the first timeslot and the second timeslot and transmitting data in the second timeslot based on the data transmission request. | 03-05-2015 |
20150063327 | HIGH EFFICIENCY WIRELESS (HEW) ACCESS POINT (AP) COORDINATION PROTOCOL - Systems, methods, and devices for high efficiency wireless (HEW) access point (AP) coordination protocol are described herein. According to certain aspects, a method for coordinating access to a shared medium by an access point (AP) is provided. The method generally synchronizing with one or more peer apparatuses based on synchronization messages detected during a listening time, outputting, for transmission, scheduling information to the one or more peer apparatuses, the scheduling information indicating one or more time periods during which coordinated access to the shared medium is desired, and outputting, for transmission, at least some of the scheduling information to devices served by the apparatus. | 03-05-2015 |
20150131637 | V2V SYSTEM WITH A HYBRID PHYSICAL LAYER - A vehicle-to-vehicle (V2V) communication transponder for use in V2V communication, safety and anti-collision systems using a hybrid protocol combining time-division multiplexed access (TDMA), with collision sense multiple access (CSMA) protocol. The TDMA frame is broken into regions, a priority and emergency TDMA region, and a non-priority CSMA region. The sizes of the TDMA regions change dynamically based on demand, with the CSMA region using the remaining time slots. Transponders self-select time slots; selected slots are held until a new time slot selection criteria; all transponders participate in notifying a transponder of a time slot message collision. An inter-transmission guard time may be dynamic based on range. Embodiments are free of MAC and IP addresses. No central authority or road-side equipment (RSU) is required. Embodiments include equipped vehicles and V2V system using the transponder. | 05-14-2015 |
20150131638 | METHODS FOR PACKET TRANSMISSION PROTECTION AND COMMUNICATIONS APPARATUS UTILIZING THE SAME - A communications apparatus includes a radio module providing a predetermined wireless communications service and communicating with a peer communications apparatus in a predetermined frequency band in compliance with a predetermined protocol. The radio module includes a processor. The processor determines a maximum packet transmission duration, transmits information regarding the maximum packet transmission duration to the peer communications apparatus and negotiates a preferred packet transmission duration with the peer communications apparatus. | 05-14-2015 |
20150295628 | METHOD FOR DETERMINING A TIME MULTIPLEXING SEQUENCE FOR A MIMO RADAR - For providing time multiplexing sequences for transmit antennas of a linear or two-dimensional MIMO radar unit that includes antennas situated close to one another (collocated MIMO radar), a method that enables a precise angle estimation includes implementing an algorithm with which a transmit sequence of transmitters and their transmit times are determined so that object movements have essentially no influence on the angle estimation. In this way, as a function of previously known quantities, optimal time multiplexing sequences can be determined in each case. | 10-15-2015 |
20150304024 | Method and Device for Allocating Code Offset - A method and device for distributing a code offset are provided. The method includes: an RNC equally dividing the access time of a UE into one or more sets of access time which are not overlapped with one another, wherein each set of access time comprises one or more timeslots; and the RNC distributing a corresponding code offset τ | 10-22-2015 |
20150305040 | CHANNEL SELECTION CO-EXISTENCE IN SHARED SPECTRUM - Techniques for channel selection and related operations in a shared spectrum environment are disclosed. In one example, a channel selector or the like may be used to select one of a number of available channels as an operating channel based on a comparison of cost functions for each of the available channels, with the cost functions being based on separate utility and penalty metrics. In another example, a channel scanner or the like may be used to trigger a channel scan in response to a channel quality metric indicating poor service for a threshold number or proportion of access terminals. In another example, an operating mode controller may be used to trigger a Time Division Multiplexing (TDM) mode on an operating channel in response to a utilization metric being above a threshold. The TDM mode may cycle operation between activated and deactivated periods in accordance with a TDM communication pattern. | 10-22-2015 |
20150326333 | DETERMINISTIC SCHEDULING ALGORITHM FOR WIRELESS COMMUNICATION - A system and method to implement a scheduling algorithm in a communication network using time division multiple access (TDMA) are described. The system includes a plurality of devices, each device transmitting a packet of data in the communication network, and a memory device to store the scheduling algorithm. The system also includes a processor to execute the scheduling algorithm to form a deterministic packet scheduling scheme, the deterministic packet scheduling scheme being based on a base unit representing a minimum among maximum packet intervals corresponding to the plurality of devices in the communication network. | 11-12-2015 |
20150327295 | INTER RADIO ACCESS TECHNOLOGY MEASUREMENT GAP - A method of wireless communication includes receiving a data grant for multiple retransmission time slots associated with successfully decoded high speed data. The grant is in response to a base station detecting a NACK. The method also includes tuning away from a serving cell during the retransmission time slots. | 11-12-2015 |
20150358097 | APPARATUS AND METHOD FOR SAMPLE CLOCK CORRECTION - A radio transceiver apparatus configured to transmit and receive radio frequency signals, the apparatus comprising, a sample clock configured to generate samples at a clock frequency f | 12-10-2015 |
20150358965 | PROTOCOL FOR ALLOCATING UPSTREAM SLOTS OVER A LINK IN A POINT-TO-MULTIPOINT COMMUNICATION SYSTEM - A system for controlling a contention state for a communication link between a base station controller and customer premises equipment in point-to-multipoint communication. The contention state is controlled using a state machine, which includes a grant pending absent state in which a unicast request slot is maintained open for use by the customer premises equipment. During the grant pending absent state, the customer premises equipment sends no upstream data to the base station controller but can use the unicast request slot to request a data slot for sending upstream data to the base station controller. In the grant pending state, the customer premises equipment preferably uses piggybacking to request grant of a next data slot while sending upstream data to the base station controller. | 12-10-2015 |
20160014772 | 6LOWPAN BASED MULTIDISCIPLINARY WIRELESS SENSOR PROTOCOL FOR CONNECTED HOME SECURITY SYSTEMS | 01-14-2016 |
20160044661 | POLYMORPHISM AND PRIORITY INVERSION TO HANDLE DIFFERENT TYPES OF LIFE STYLE AND LIFE SAFETY TRAFFIC IN WIRELESS SENSOR NETWORK FOR A CONNECTED HOME - A system including a control panel having a first and second wireless transceivers, a beacon processor of the control panel that transmits a beacon through the first transceiver, the beacon defines a repeating superframe having a first time period and a second time period, a plurality of wireless devices that exchange messages with the control panel within a respective TDMA slot of the superframe and an access processor within the control panel that dynamically adjusts a relative size of the first and second time periods to reduce or exclude WiFi access by portable user devices based upon a status of the plurality of wireless devices wherein use of the second time period is polymorphic under IEEE 802.11 and IEEE 802.15A protocols and wherein a relative priority of the first and second time periods is inverted during transmissions between the control panel and other devices of the control panel. | 02-11-2016 |
20160113027 | TIME SLOT STATE UPDATE METHOD AND DEVICE - Embodiments of the present invention relate to the field of wireless communications. Disclosed are a time slot state update method and device, which are used to improve the time flexibility during update of the time slot state. In the present invention, a communications node determines an update period of a time slot state table, the update period comprising x continuous time slots and x being an integer not less than 1 and not greater than the total of the time slots comprised in one frame; and the communications node updating the time slot state table after the update period ends. It can be seen that, the solution can improve the time flexibility during update of the time slot state. | 04-21-2016 |
20160134436 | CHAIN-TYPE WIRELESS SENSOR NETWORK-ORIENTED HYBRID MEDIA ACCESS CONTROL METHOD - The present invention relates to wireless network technologies, and particularly to a chain-type wireless sensor network-oriented hybrid media access control (MAC) method. The present invention fully considers features of a chained or linear topology of a wireless sensor network applied in power transmission line monitoring and the like, adopts different access policies at different periods of the network, and proposes a method of time division access control Pipelined TDMA during busy periods and contention access control S-XMAC during idle periods. During busy periods, a pipelined scheduling transmission method is used to avoid the problem of hidden terminals so as to improve transmission reliability and resource utilization. During idle periods, different MAC parameters are set for cluster head members and ordinary cluster members, so that the cluster head members can respond to requests in a more timely manner, and meanwhile, the ordinary cluster members save energy as much as possible, thereby meeting requirements for network real-time quality of the application system while saving energy of the network. | 05-12-2016 |
20160183247 | WIRELESS MEDIA USAGE, CHANNEL AGGREGATION, AND FULL-DUPLEX COMMUNICATIONS | 06-23-2016 |
20160183280 | SOFT-TDMA FOR WIRELESS AD-HOC NETWORKS | 06-23-2016 |
20160197717 | COMMUNICATING A HIGH PRIORITY MESSAGE IN A COMMUNICATION CHANNEL OF A WIRELESS COMMUNICATION NETWORK BASED ON A TDMA PROTOCOL | 07-07-2016 |
20160198460 | TIME SLOT SELECTION IN WIRELESS COMMUNICATION | 07-07-2016 |
20170238315 | APPARATUS AND METHOD FOR GENERATING BROADCAST SIGNAL FRAME USING LAYERED DIVISION MULTIPLEXING | 08-17-2017 |
20180026714 | COMMUNICATION METHOD IN TIME DIVISION DUPLEX SYSTEM, BASE STATION, AND USER EQUIPMENT | 01-25-2018 |
20180026736 | WIRELESS COMMUNICATION SYSTEM, BASE STATION DEVICE, MOBILE STATION DEVICE, AND WIRELESS COMMUNICATION CONTROL METHOD | 01-25-2018 |
20190150145 | APPARATUS AND METHOD FOR GENERATING BROADCAST SIGNAL FRAME USING LAYERED DIVISION MULTIPLEXING | 05-16-2019 |