Patent application number | Description | Published |
20080267131 | Pre-Synchronization Method for Hard Handovers in Wireless Networks - A pre-synchronization method in which the source cell chooses a signature for the user equipment (mobile) to use in the target cell for RACH access, and instructs the user equipment to perform RACH access and return to the current cell before a handover command (break command) is issued. This causes parallel execution of the UL synchronization process with the context transfer process among the two base stations. | 10-30-2008 |
20090031185 | HYBRID ARQ SYSTEMS AND METHODS FOR PACKET-BASED NETWORKS - Systems and methods for hybrid automatic repeat-request (HARQ) communication, comprising a transmitter employing hybrid automatic repeat-request (HARQ) and able to retransmit an incorrectly received packet without differently re-encoding data bits. The transmitter is further able to select at least one bit from any in a set to forward in at least one retransmission. The set contains any bits punctured from an original transmission corresponding to the retransmission. Other embodiments transmit, by a transmitter using hybrid automatic repeat-request (HARQ), a packet containing at least one punctured bit, select—without differently re-encoding data bits—at least one bit from any in a set to forward in at least one re-transmission of an incorrectly received packet, and retransmit the packet with at least one different punctured bit. The set contains any bits punctured from an original transmission corresponding to the re-transmission. | 01-29-2009 |
20090040937 | COEXISTENCE OF DIFFERENT NETWORK TECHNOLOGIES - In at least some embodiments, a communication device includes a plurality of network technology subsystems, each subsystem associated with a different network technology. The communication device also includes a controller coupled to the plurality of network technology subsystems. The controller enables coexistence of the different network technologies in accordance with at least one monitored quality of service (QoS) parameter. | 02-12-2009 |
20090040945 | SYSTEMS AND METHODS FOR UTILIZING GLOBAL TRAFFIC FLOW PARAMETERS FOR PACKET-BASED NETWORKS - Embodiments achieve simpler solutions to coexistence problems for wireless network subsystems in a single device. Some embodiments describe systems and methods for determining change in at least one network technology traffic flow, performing mapping functions between network technology-specific parameters of the changed traffic flow and global traffic flow parameters, and prioritizing the at least one changed network technology traffic flow based on the mapped global traffic flow parameters. Further embodiments alternatively describe a mapper for performing mapping between at least one network technology-specific parameter of a network technology subsystem traffic flow and at least one global traffic flow parameter. | 02-12-2009 |
20090040990 | SYSTEMS AND METHODS FOR AVOIDING AVALANCHE EFFECT IN COEXISTING WIRELESS NETWORKS - Systems and methods for avoiding access point transmission rate fall-back mechanism having an avalanche effect when acknowledgements are not received for packets sent during co-existence of WLAN and other wireless network technologies. A receiver comprises at least two dissimilar network technology subsystems. In some embodiments, a transmitter transmits a handshake to the receiver prior to transmission of at least one data packet and does not reduce a transmission rate of future transmissions to the receiver if the transmitter does not receive a reply to the handshake. In other embodiments, the receiver is able to send an indicator to a transmitter requesting a protection mechanism be employed prior to transmission by the transmitter of at least one data packet. In further embodiments, the receiver is able to negotiate with the transmitter for the transmitter to employ a protection mechanism prior to transmission of at least one data packet to the receiver. | 02-12-2009 |
20090147678 | SYSTEMS AND METHODS FOR TRAFFIC FLOW BASED RATE ADAPTATION IN PACKET-BASED NETWORKS - Embodiments provide systems and methods for traffic flow based rate adaptation in packet-based networks. In some embodiments, a communications system comprises at least one receiver and a transmitter able to control transmission to the at least one receiver of a packet among a plurality of traffic flows, each traffic flow having its own transmission rate adaptation mechanism. In other embodiments, a communications method comprises determining, by a transmitter able to control transmission of a packet among a plurality of traffic flows each having its own transmission rate adaptation mechanism, a parameter value, and, depending upon the parameter value, adapting the transmission rate of at least one traffic flow. In further embodiments, a communications device comprises a transmitter able to control transmission of a packet among a plurality of traffic flows, each traffic flow having its own transmission rate adaptation mechanism. | 06-11-2009 |
20090163145 | SYSTEMS AND METHODS FOR TIME OPTIMIZATION FOR SILENCING WIRELESS DEVICES IN COEXISTENCE NETWORKS - Embodiments provide systems and methods to optimize the time when to transmit a silencing frame, and hence, improve the overall network throughput and avoid access point transmission rate fall-back mechanism having an avalanche effect during coexistence of dissimilar wireless network technologies. A receiver comprises at least two dissimilar network technology subsystems, at least one subsystem of which is higher priority than at least another of the dissimilar subsystems. In some embodiments, a receiver is able to transmit a silencing frame during a predetermined transmission window within a lower priority technology network interval. In other embodiments, a receiver calculates a predetermined transmission window, the predetermined transmission window to occur within a lower priority technology network interval, and transmits a silencing frame during the predetermined transmission window. In further embodiments, a receiver is able to calculate a transmission window to occur during a lower priority technology network interval, and transmit a silencing frame during the calculated transmission window. | 06-25-2009 |
20090247071 | METHOD AND SYSTEM FOR FM TRANSMITTER COEXISTENCE - A system and method for operating an FM system and wireless networking system coexistent in a mobile wireless device. A mobile wireless device includes a frequency modulation (“FM”) system that includes an FM transmitter and, optionally, an FM receiver. The mobile wireless device also includes a wireless networking system having a network receiver. The FM system is configured to disable the FM transmitter if an amplitude of a modulating signal provided to the FM transmitter is below a predetermined threshold. | 10-01-2009 |
20090257377 | REDUCING BUFFER SIZE FOR REPEAT TRANSMISSION PROTOCOLS - A wireless communication device includes a receive buffer and control logic coupled to the receive buffer. The control logic implements an algorithm to selectively drop data blocks in the receive buffer once a predetermined fill threshold for the receive buffer is reached. The receive buffer is sized so that a drop activity level for the algorithm is within a predetermined range. | 10-15-2009 |
20090303975 | METHOD AND SYSTEM FOR WIRELESS COEXISTENCE - A system and method for reducing wireless local area network (WLAN) interference with a different wireless network (non-WLAN). A wireless device includes a WLAN transceiver and a non-WLAN transceiver. The WLAN transceiver is configured to operate in a WLAN, and configured to operate selectively using one of a greater bandwidth and a lesser bandwidth in a frequency band. The wireless communication of the non-WLAN is incompatible with the WLAN. The non-WLAN transceiver is configured to request the WLAN transceiver operate using the lesser bandwidth. | 12-10-2009 |
20100040033 | REVERSE DIRECTION GRANT (RDG) FOR WIRELESS NETWORK TECHNOLOGIES SUBJECT TO COEXISTENCE INTERFERENCE - In accordance with at least some embodiments, a system includes an access point and a station in communication with the access point. The station has at least two network technology subsystems subject to coexistence interference. The station selectively uses reverse direction grant (RDG) for communications by network technology subsystems subject to coexistence interference. | 02-18-2010 |
20100067423 | POWER-SAVE (PS)-POLL SUBSTITUTION - In accordance with at least some embodiments, a system comprises an access point and a station in communication with the access point. The station has at least two network technology subsystems subject to coexistence interference. The station selectively implements Power Save (PS)-Poll substitution (PSPS) logic to handle communications between the station and the access point. | 03-18-2010 |
20100067424 | BOUNDED POWER-SAVE-POLLING (BPS) - In accordance with at least some embodiments, a system comprises an access point and a station in communication with the access point. The station has at least two network technology subsystems subject to coexistence interference. The station selectively implements bounded Power Save (PS)-Polling (BPS) logic to handle communications between the station and the access point. The BPS logic operates to confine PS-Poll transmissions starts to one of two separate windows during a medium grant duration of the station. | 03-18-2010 |
20100067516 | SYNCHRONIZED CHANNEL ACCESS IN COEXISTING WIRELESS NETWORKS - A system and method for arbitrating channel access in a wireless device including co-located network transceivers are disclosed herein. A wireless device includes a first wireless transceiver and a second wireless transceiver. The first transceiver is configured for operation with a first wireless network. The second transceiver is configured for operation with a second wireless network. The wireless device further includes logic that determines which of the first and second transceivers is enabled to transmit at a given time. The logic causes the first transceiver to transmit a notification signal indicating a time period during which the second transceiver of the wireless device will perform a first wireless transaction, and during which, based on receiving the notification signal, a different wireless device performs a second wireless transaction via the second wireless network without transmitting a notification signal. | 03-18-2010 |
20100069112 | SCHEDULING TRANSMISSIONS IN COEXISTING WIRELESS NETWORKS - A system and method for scheduling channel access in a wireless device including co-located network transceivers are disclosed herein. A wireless device includes a first wireless transceiver, a second wireless transceiver, and an arbiter. The first wireless transceiver is configured for communication via a first wireless network. The second wireless transceiver is configured for communication via a second wireless network. The arbiter controls which one of the first and second transceivers is enabled to transmit at a given time. The arbiter computes a predicted a start time for a transmission via the second wireless transceiver and computes a transmission duration for a first packet pending transmission via the first transceiver. Based on the predicted start time and the computed duration, the arbiter transmits the first packet at a time when the first packet transmission does not overlap the transmission via the second wireless transceiver. | 03-18-2010 |
20100085946 | ADAPTIVE TRANSMISSIONS IN WIRELESS NETWORKS - A network includes an access point and a station. The station transmits to the access point a current clear-to-send packet at a current time during a current exchange. The transmission is based on success or failure of a previous exchange during which a previous clear-to-send packet was transmitted at a previous time. | 04-08-2010 |
20100093392 | PROTECTING UPLINK TRANSMISSIONS IN COEXISTING WIRELESS NETWORKS - A system and method for protecting a wireless device including co-located network transceivers from uplink starvation are disclosed herein. A wireless device includes a first wireless transceiver and a second wireless transceiver respectively configured for communication via a first wireless network and a second wireless network. The wireless device further includes logic that determines which of the first and second transceivers is enabled to transmit at a given time. The logic determines a duration of a pending transmission via the first transceiver, and determines a predicted start time of a predicted transmission via the second transceiver. Based on the duration and the predicted start time, the logic transmits a notification signal indicating that a receiving device should refrain from transmitting on the first network for a reserved time ending after the pending transmission starts. The pending transmission starts following completion of the predicted transmission. | 04-15-2010 |
20100189024 | PS-Poll Transmission Opportunity in WLAN - Embodiments of the invention provide a dynamic priority adjustment algorithm for PS-Poll packets in WLAN and dynamic CW (contention window) management algorithm for PS-Poll packets in WLAN. These improve the performance of traffic flows associated with STAs in power save mode. Maintain the QoS requirements of the traffic flows. When PS-Poll packets are not able to be sent, the QoS STA will experience a long delay of the downlink data, even if the downlink data has been assigned a higher AC. The delay may potentially violate the QoS bound required by the data flow. Using the embodiments can significantly decrease the probability of this event. | 07-29-2010 |
20100214942 | ADAPTIVE PERIODIC POWER-SAVE (PS) POLLING - In accordance with at least some embodiments, a system includes an access point and a station in communication with the access point. The station selectively implements adaptive periodic Power-Save (APPS)-Polling logic for communications between the station and the access point. The APPS-Polling logic is configured to determine a timer value for periodic PS-Polling by monitoring a periodicity of arrival packets for at least a threshold amount of time. | 08-26-2010 |
20100238807 | REDUCING CHANNEL OVERHEAD IN A WIRELESS COEXISTENCE NETWORK - A system composed of a device configured to communicate, using a first wireless protocol, with a node. The system also comprises a processor coupled to the device and configured to determine whether the node operates in a coexistence mode. If the processor determines that the node operates in a coexistence mode then, as a result, the processor determines when the node operates in the first wireless protocol and communicates, by way of the device and without solicitation from the node, with the node when the node operates in the first wireless protocol. | 09-23-2010 |
20100246464 | POWER CONSERVATION THROUGH BI-DIRECTIONAL ASSOCIATION OF MULTIPLE DEVICES - A system comprises radio circuitry, an access point (AP) feature, and a station (STA) feature. The AP feature causes the radio circuitry to transmit data to a hardware device during a beacon interval. The AP feature is not used to receive data from the hardware device during the beacon interval except to receive data request signals. The STA feature causes the radio circuitry to receive data from the hardware device during the beacon interval. The STA feature is not used to transmit data to the hardware device during the beacon interval except to transmit data request signals. The radio circuitry is in a de-powered state during the beacon interval when the radio circuitry does not transmit or receive data or data request signals. | 09-30-2010 |
20100268841 | USING HIGHER LAYER INFORMATION TO FACILITATE COEXISTENCE IN WIRELESS NETWORKS - A system composed of a node configured to transmit a first data stream to a first device using a first protocol and a second data stream to a second device using a second protocol. The system is also composed of a controller in communication with the node. The controller is configured to prioritize a first packet of the first data stream prior to transmission of the first packet. The prioritization is based on application layer information of the first packet. If the application layer information of the first packet indicates that the priority of the first packet is lower than the priority of a second packet of the second data stream, the controller causes the node to transmit the second packet. | 10-21-2010 |
20100278065 | Traffic Load Estimation for Access Point Functionality Enabled Mobile Devices - Embodiments of the invention comprise a system and method for estimating a traffic load on a wireless network. An access point notifies a station that the access point will not receive transmissions during a first quiet period. After the first quiet period, the access point monitors the wireless network during a first monitoring period. If no transmissions are received during the first monitoring period, the access point notifies the station that it will not receive transmissions during a second quiet period. The second quiet period has an equal or longer duration than the first quiet period. The access point alternates between monitoring periods and quiet periods and progressively expands the duration of the quiet periods as long as no transmissions are received during the monitoring periods. If a station notifies the access point that packets are pending at the device, the monitoring period is extended to handle these packets immediately. | 11-04-2010 |
20100325459 | PEER-TO-PEER GROUP OWNER ENHANCED POWER MANAGEMENT - A device includes a peer-to-peer group owner processor. The device also includes a memory coupled to the peer-to-peer group owner processor. At least one client associated with the device is a legacy client, and the peer-to-peer group owner processor enters a listening state after a dozing state. The device consumes less power in the listening state than in an awake state. | 12-23-2010 |
20100329202 | CHANNEL UTILIZATION IMPROVEMENT IN COEXISTING WIRELESS NETWORKS - A wireless device comprises a first wireless transceiver configured for communication via a first wireless network, a second wireless transceiver configured for communication via a second wireless network; and a scheduler that controls which of the first and second transceivers is granted access to a wireless medium at a given time. When the first wireless transceiver has been granted access to the wireless medium by the scheduler and the first wireless transceiver receives a packet via the first wireless network, the scheduler temporarily grants the second wireless transceiver access to the wireless medium based on the packet indicating that first wireless transceiver is not to use the wireless medium for a period of time. | 12-30-2010 |
20110069651 | CONSERVING POWER USING CONTENTION-FREE PERIODS THAT LACK NETWORK TRAFFIC - A method that comprises receiving, by an access point (AP), an interval value from a station (STA). The interval value corresponds to a frequency with which the STA listens to the AP. The method also comprises commanding, by the AP, the STA to refrain from transmitting data to the AP until a period expires. The commanding comprises the AP setting a duration of the period to correspond to the interval value. The method further comprises transferring, by the AP, data to the STA after the period expires. | 03-24-2011 |
20110086660 | CONTROL OF COEXISTING WIRELESS NETWORKS BASED ON PREDICTED TRANSMISSION ARRIVAL TIME - A system and method for optimizing medium utilization with coexisting wireless networks is described herein. In one embodiment, a wireless device includes a first wireless transceiver, a second wireless transceiver, and logic configured to determine which of the first and second wireless transceivers is enabled at a given time. The first wireless transceiver is configured for operation with a first wireless network. The second wireless transceiver is configured for operation with a second wireless network coexisting with the first wireless network. The logic is further configured to predict an arrival time of a transmission from a different device and to enable the second wireless transceiver based on the predicted arrival time. | 04-14-2011 |
20110103355 | PACKET GROUPING FOR A CO-EXISTING WIRELESS NETWORK ENVIRONMENT - In at least some embodiments, a communication device includes a host processor and a plurality of co-existing wireless technology transceivers coupled to the host processor. The plurality of co-existing wireless technology transceivers share a communication medium using time-multiplexing. A throughput for data transmissions by the plurality of co-existing wireless technology transceivers is based on an algorithm that determines a grouping option for data packets to be transmitted by one of the co-existing wireless technology transceivers, the grouping option providing a highest throughput for a predetermined baseband PHY rate without exceeding a predetermined maximum grouping delay. | 05-05-2011 |
20110222409 | SYSTEM AND METHOD FOR USE OF RESERVED MEDIUM IN COEXISTING WIRELESS NETWORKS - A system and method for using reserved resources in coexisting wireless networks. In one embodiment, a wireless apparatus includes a receiver, a network activity monitor, and a network access scheduler. The receiver is configured to identify a received network reservation message that inhibits access to a first wireless network for an interval defined in the reservation message. The network activity monitor is configured to monitor wireless activity on the first wireless network during the interval. The network access scheduler is configured to determine whether the reservation message prevents conflict of the first wireless network with a coexisting wireless network during the interval, and to schedule, based on a determination that the reservation message prevents conflict with the coexisting wireless network, the wireless apparatus to transmit on the first wireless network during the interval to a wireless device other than a wireless device identified in the reservation message. | 09-15-2011 |
20110225305 | SYSTEM AND METHOD FOR DETERMINING GROUP OWNER INTENT - A system comprising a first wireless device which comprises a first group owner intent determination unit. The first group owner intent determination unit is configured to determine a group owner intent value of the first wireless device based on: whether the first wireless device is configured to access a coexisting wireless network, the power remaining in the first wireless device at the time the group owner intent value determination is made, whether the first wireless device is a group owner in another peer to peer group, a received signal strength indication of the first wireless device, and/or whether the first wireless device is required to perform a cross-connection between an infrastructure basic service set and a peer to peer group. | 09-15-2011 |
20110235600 | METHOD AND SYSTEM FOR USING RESOURCES ALLOCATED TO A WIRELESS NETWORK IN A COEXISTING WIRELESS NETWORK - A wireless device includes a first wireless transceiver and a second wireless transceiver. The first wireless transceiver is configured to communicate via a first wireless network, and includes a first scheduler configured to schedule communication via the first wireless network. The second wireless transceiver is configured to communicate via a second wireless network. The second wireless transceiver includes a second scheduler. The second scheduler is configured to identify a resource allocated to the second wireless transceiver for a transaction via the second wireless network, to identify a portion of the resource used by the second wireless transceiver for the transaction, and to transfer information defining the portion to the first transceiver. The first scheduler is also configured to schedule, based on the information transferred by the second scheduler, the first transceiver to communicate via the first wireless network using the resource allocated to the second wireless transceiver for the transaction. | 09-29-2011 |
20110310826 | INTENTIONAL IDLE GAPS IN COEXISTING WIRELESS NETWORKS - A wireless combination device includes a first wireless transceiver configured for communication via a first wireless network over a first band, and a second wireless transceiver configured for communication via a second wireless network over a second band that overlaps the second band. The combination device includes a medium allocation scheduler coupled to the first wireless transceiver and second wireless transceiver for implementing spaced-mode operation that intentionally inserts idle gaps in transmissions via the second wireless network when triggered by the presence of at least one spaced-mode triggering condition. The idle gaps allow wireless transmissions via the first wireless network to be received by the combination device with higher probability, and without the need for clear to send (C2S) protection. | 12-22-2011 |
20110310869 | ENHANCING PACKET AGGREGATION PERFORMANCE IN COEXISTING WIRELESS NETWORKS - A method of communications for a coexisting wireless network including a wireless combination (combo) device communicating via a first wireless network and second wireless network, and a first wireless device on the first network. During an activity interval for the second network (i) a transmit (Tx) time interval is longer in duration than a Tx packet duration and/or (ii) a receive (Rx) time interval is longer in duration than a Rx packet duration to provide remaining time. A frame aggregated packet is used on the first network that includes a plurality of data packets and a dummy packet or spoofing so that the frame aggregated packet is extended in time or indicates an extension sufficient to overlap the Tx time interval or Rx time interval. The combo device transmits or receives an acknowledgement (ACK) on the first network during the activity interval for the second wireless network. | 12-22-2011 |
20120020266 | POWER STATE AND MEDIUM ACCESS COORDINATION IN COEXISTING WIRELESS NETWORKS - Apparatus and method for improving throughput in a wireless device accessing coexisting networks. In one embodiment, a wireless device includes first and second wireless transceivers, a power state controller, and an access controller. The first wireless transceiver is configured to access a first wireless network. The second wireless transceiver is configured to access a second wireless network. The power state controller is configured to switch the first wireless transceiver between an active state and a sleep state. The power consumed by the first wireless transceiver while in the sleep state is reduced relative to the active state. The access controller is configured to alternately allocate a wireless medium to the first wireless transceiver and the second wireless transceiver. The power state controller and the medium access controller are configured to coordinate power state switching of the first wireless transceiver and wireless medium access by the second wireless transceiver. | 01-26-2012 |
20120033652 | System and Method for Simultaneous Infrastructure and Ad Hoc Networked Communications - A method and a system are disclosed for maintaining a simultaneous communication between a first wireless station and both an access point and a second wireless station. The first and second wireless stations are associated with the access point, or only one of the wireless stations, but not both, is associated with the access point. The first wireless station gains an instance of medium access by using applicable medium access protocols. Once the first wireless station gains an instance of medium access, it transmits frames to the access point on an infrastructure network and to the second wireless station on the same infrastructure network or an ad hoc network. The overall air time must not exceed the maximum air time allowed for the instance of medium access. All transmitted frames must have a user priority mapped to the access category for which the instance of medium access was obtained. | 02-09-2012 |
20120039329 | SYSTEM AND METHOD FOR USING PARTIALLY RECEIVED PACKETS IN COEXISTING NETWORKS - A system and method for using partially received packets in coexisting networks. In one embodiment, a wireless receiver includes an interference detector and a packet validator. The interference detector is configured to determine that time multiplexing of a coexisting wireless network interferes with reception of a packet by the wireless receiver. The packet validator is configured to identify a type of the packet and useable data values of the packet when a partial packet is received due to the time multiplexing. The packet validator is configured to identify the type and useable data values of the packet based on a packet signature stored in the wireless receiver. | 02-16-2012 |
20120063340 | SYSTEM AND METHOD FOR ACCESS POINT BASED POSITIONING - Apparatus and methods for scanning for access points (APs) for wireless local area network (WLAN) positioning. In one embodiment a wireless device includes a WLAN positioning system. The WLAN positioning system includes an AP scanner. The AP scanner is configured to determine which WLAN channels are being used by APs proximate to the wireless device. The AP scanner is also configured to scan for AP transmissions only the WLAN channels determined to be used by APs proximate to the wireless device. The AP scanner is further configured to extract signal strength and AP identification information for WLAN positioning from the AP transmissions on the scanned channels. | 03-15-2012 |
20120068883 | Method for GNSS Coexistence - A method for operating a wireless transmitter and a global navigation satellite (“GNSS”) receiver coexistent in a mobile wireless device. A mobile wireless device includes a GNSS receiver and a wireless networking system. The wireless networking system includes a wireless transmitter. The wireless transmitter provides a first interference level signal to the GNSS receiver. The first interference level signal indicates a level of interference that the GNSS receiver can expect due to operation of the transmitter. A priority signal is asserted if the processing of navigation signals in the GNSS receiver takes precedence over wireless transmitter transmissions. | 03-22-2012 |
20120106381 | SYSTEM AND METHOD FOR SOFT ACCESS POINT POWER REDUCTION - A system and method for reducing power consumption of a wireless device operating as a soft access point. In one embodiment, a wireless device includes a soft access point controller that configures the wireless device to operate as a group owner in a peer-to-peer wireless local area network. The soft access point controller includes a beacon controller. The beacon controller is configured to transmit beacon frames at a first periodic interval. The beacon controller is also configured to extend a discovery interval of a wireless station by transmitting acknowledgement packets at a second periodic interval. The second periodic interval is shorter than the first periodic interval and shorter than a minimum discovery scan timeout of the wireless station. | 05-03-2012 |
20120106418 | CLIENT' DEVICE POWER REDUCTION IN WIRELESS NETWORKS HAVING NETWORK-COMPUTED CLIENT' LOCATION - A method of reducing client power consumption in a wireless network including a network server which provides computed client' locations, at least one access point (AP), and a plurality of wireless stations (STAs) including a first wireless station (STA1). The AP periodically sends beacon frames that span a beacon period, wherein at least a first beacon frame is sent during the beacon period. The STA1 sends a location request frame to the AP requesting a STA1 location. During the beacon period the STA1 wakes up from a powersave (PS) mode or a sleep mode and sends a PSPoll frame to the AP. Responsive to the PSPoll frame, the AP replies with a priority response being a data frame including a location response packet including the STA1 location or a Null frame if the STA1 location is not available. | 05-03-2012 |
20120106528 | UNIFIED PROTOCOL STACK FOR COLOCATED WIRELESS TRANSCEIVERS - A system and method for accessing a wireless network via unified protocol stack. In one embodiment a wireless networking system includes a wireless device. The wireless device includes a first wireless transceiver, a second wireless transceiver, a processor, and a unified protocol stack. The first wireless transceiver is configured for communication via a first wireless network. The second wireless transceiver is configured for communication via a second wireless network. The unified protocol stack includes first protocols defined for accessing the first wireless network and second protocols defined for accessing the second wireless network. The unified protocol stack includes instructions that cause the processor to access the first wireless network via the first wireless transceiver using one of the second protocols. | 05-03-2012 |
20120129456 | Systems and Methods for Silencing Wireless Devices - Embodiments provide systems and methods to optimize the time when to receive transmissions from dissimilar wireless networks, and hence, improve the overall network throughput and avoid access point transmission rate fall-back mechanism having an avalanche effect during coexistence of dissimilar wireless network technologies. A receiver comprises at least two dissimilar network technology subsystems and is able to receive transmissions from dissimilar wireless network technology subsystems during a predetermined reception window. | 05-24-2012 |
20120163261 | TIMING MEASUREMENTS BETWEEN WIRELESS STATIONS WITH REDUCED POWER CONSUMPTION - A method of obtaining timing parameters between wireless station peers using reduced power. A timing measurement protocol is executed a including a plurality of Timing Measurement Action (TMA) frames between a first wireless station (STA | 06-28-2012 |
20120163312 | Reducing the Number of Silencing Frames Transmitted in a Coexistence Network - Systems and methods for reducing the number of silencing frames transmitted in a coexistence network are described. In some embodiments, a method may include abstaining from transmitting silencing frames until detection of a predetermined event. Predetermined events include, for example, detection of a retransmitted packet, detection of a transmission or packet rate drop, and/or detection that an expected packet has been missed. In some cases, two or more predetermined events may be logically combined in any suitable manner or order, and may occur in series or in parallel with respect to each other. Once the predetermined event(s) have been detected, a silencing frame may then be transmitted. In some cases, subsequent silencing frames may be transmitted to facilitate return to a maximum attainable transmission rate. An investigation or observation period during which silencing frames are transmitted despite the absence of a predetermined event may enable the collection of network statistics. | 06-28-2012 |
20120182979 | PERFORMANCE IN A DUAL BSS ENVIRONMENT - An integrated circuit includes logic configured to adjust an original service time of a first Wi-Fi Basic Service Set connection (“BSS”), out of a plurality of BSSs configured to be associated with a communication device, to an adjusted service time based on an unsuccessful acknowledgement transmission or reception in a previous service time on the first BSS. At least one of the plurality of BSSs is supportive of a peer-to-peer connection. | 07-19-2012 |
20120184330 | SELECTIVE PROTECTION BASED ON SEQUENCE NUMBERS IN COEXISTING NETWORKS - A wireless device comprises a first wireless transceiver, a second wireless transceiver, and control logic. The control logic is coupled to the first wireless transceiver and the second wireless transceiver. The control logic is configured to determine whether to transmit protection frames (e.g., clear-to-send 2 self frames) based upon sequence numbers in frames received from another device. | 07-19-2012 |
20120214464 | METHODS AND SYSTEMS FOR IMPROVING ROAD SAFETY USING WIRELESS COMMUNICATION - A wireless communication device includes an antenna coupled to a wireless communications transceiver, a processor, and a vehicle safety application. When the vehicle safety application is executed, it causes the processor to cause the wireless communication device to join a basic service set through the antenna and wireless communications transceiver. The application also causes the processor to determine a location of the wireless communication device, receive location information indicative of a location of another wireless communication device in the basic service set, and generate an alert based on the determined location and the received location information. | 08-23-2012 |
20120229334 | FINE TIME ASSISTANCE FOR GLOBAL NAVIGATION SATELLITE SYSTEMS - Apparatus and method for providing fine timing assistance to global navigation satellite systems (GNSS) via wireless local area network (WLAN). In one embodiment, a method for synchronizing a global navigation satellite system (GNSS) receiver includes receiving, by a wireless device, via a wireless local area network (WLAN), fine time assistance information transmitted by an assisting device connected to the WLAN. A time value of a GNSS clock of the wireless device is adjusted based on the fine time assistance information. Based on the adjusted time value, GNSS codes of a GNSS positioning signal are acquired by the wireless device. | 09-13-2012 |
20120281533 | SYSTEMS AND METHODS FOR TIME OPTIMIZATION FOR SILENCING WIRELESS DEVICES IN COEXISTENCE NETWORKS - In at least some embodiments, a communication device includes a transceiver with at least two dissimilar wireless network technology subsystems. The communication device also includes a silencing frame controller to monitor access point rate drop behavior and to adjust a level of silencing frame operations for the communication device based on the monitored access point drop behavior. | 11-08-2012 |
20120282948 | WIRELESS-BASED POSITIONING WITHOUT ASSOCIATION - A wireless location assist device (WLAD) comprises control logic and a wireless radio coupled to the control logic. The control logic causes the radio to perform at least one of wireless local area network (WLAN) beacon transmission and WLAN probe request receipt and response. The control logic never permits the WLAD to associate with a wireless station. | 11-08-2012 |
20120314661 | Adaptive Transmissions in Wireless Networks - A network includes an access point using a first protocol and a station using both the first protocol and a second protocol. The station uses the first protocol before a first threshold and a second protocol after the first threshold. A first duration between the second threshold and the first threshold is at least of sufficient length for the station to receive one data packet from the access point and send an acknowledgment. The station transmits to the access point a current clear-to-send packet at a current time during a current exchange based on success or failure of a previous exchange during which a previous clear-to-send packet was transmitted to the access point at a previous time. | 12-13-2012 |
20120327920 | METHODS TO ENHANCE COEXISTENCE WITH LOW ENERGY WIRELESS NETWORKS - Disclosed implementations address the coexistence problem of wireless local area network (WLAN) and Bluetooth Low Energy (BLE) technologies on the same device. For example, an apparatus includes a WLAN controller configured to cause a wireless transceiver module to send and receive packets over a wireless medium. A second controller is coupled to the WLAN controller and also configured to cause the wireless transceiver module to send and receive packet. The second controller informs the WLAN controller that the second controller is going to cause an advertising packet to be transmitted by the wireless transceiver module. The WLAN controller responds by causing a first protection packet to be transmitted by the wireless transceiver module, said first protection packet causes all wireless devices receiving the protection packet to inhibit use of the wireless medium during a timer period which includes the advertising packet. Other embodiments are disclosed as well. | 12-27-2012 |
20130003630 | CONNECTION SETUP FOR LOW ENERGY WIRELESS NETWORKS BASED ON SCAN WINDOW AND SCAN INTERVAL ESTIMATION - Various techniques for connection setup for Bluetooth Low Energy (BLE) devices are disclosed. The various embodiments save power. In one example, an apparatus (such as a BLE slave) includes a controller configured to transmit advertising packets and, based on responses to the packets, and lack thereof, the controller estimates the length of the scan window and scan interval. In another embodiment, an apparatus such as a master device is configured to generate a scan update packet that specifies the scan window length, scan interval, and start and end times for that master. The controller is configured to transmit the packet to one or more slave devices. | 01-03-2013 |
20130003715 | CONNECTION SETUP FOR LOW ENERGY WIRELESS NETWORKS BASED ON MASTER DEVICE PACKET THAT INCLUDES TIMING INFORMATION - An apparatus includes a controller configured to cause a wireless transceiver to send and receive wireless packets. The controller is configured to receive a packet from another wireless device. The packet specifies a scan window length, a scan interval, and a start time. Based on the start time, scan interval, and a current time, the controller is configured to compute when a subsequent scan window will begin and the wireless transceiver does not transmit advertising packets until the subsequent scan window begins. | 01-03-2013 |
20130010960 | Methods to Improve Bluetooth Low Energy Performance - An expanded sequence number is added to PDUs in a Bluetooth® low energy system. The expanded sequence number provides more accurate identification of the PDUs and allows the system to avoid delaying transmission of PDUs while retransmitting other PDUs. A PDU security sequence number may also be added to the PDUs. The security sequence number is used to create a unique nonce for use in encrypting or decrypting and authenticating the PDU. Using the security sequence number, a failed connection can be reestablished between two devices without the need of generating an encryption key. The security sequence number allows the devices to perform encryption or decryption and authentication using an existing key and a nonce generated from the security sequence number. | 01-10-2013 |
20130028156 | ACCESS CATEGORY-BASED POWER-SAVE FOR WI-FI DIRECT GROUP OWNER - A wireless device includes a peer-to-peer group owner processor that handles peer-to-peer transactions, a memory coupled to the peer-to-peer group owner processor, and a power state controller. The power state controller determines an access category of a communication received from a peer-to-peer client and determines a quality of service constraint for the access category. The power state controller also determines a power-save mechanism for the wireless device based on the quality of service constraint and implements the determined power-save mechanism. | 01-31-2013 |
20130034005 | Enhanced QOS Support using Bluetooth Low Energy - Embodiments support stringent Quality of Service (QoS) requirements using adaptations to the existing Bluetooth Low Energy (BLE) protocols. In systems using an enhanced BLE protocol, the master send a poll frame at selected connection intervals or poll intervals. The duration of the connection interval and/or poll interval may be calculated based upon desired QoS parameters, such as delay, target packet error rate (PER), frame error rate (FER), and/or jitter. The master may consider the connection interval lost if a frame is not received from the slave after a predetermined number (m) of consecutive poll frames are transmitted. The value m may be set relatively high to provide more robustness in the system. However, the poll interval may also need to be adjusted to meet QoS requirements. The slave may be required to transmit a packet—that may or may not carry data—in response to every m | 02-07-2013 |
20130130708 | WIRELESS REGULATORY COMPLIANCE BASED ON PHYSICAL LOCATION - A wireless device comprises a first medium access controller (MAC) configured to communicate in a first basic service set (BSS) via a first wireless network and logic coupled to said the MAC. The logic is configured to determine a physical location of the wireless device and implement a communication parameter based on the determined physical location. The communication parameter includes at least one of a frequency, a channel, transmit power, and dynamic frequency selection. | 05-23-2013 |
20130170478 | WIRELESS COEXISTENCE BASED ON NETWORK ALLOCATION VECTOR USAGE - A wireless apparatus includes a wireless transceiver, a WLAN controller and a second controller coupled to the wireless transceiver. The WLAN controller is configured to send/receive packets in accordance with a WLAN protocol, and the second controller is configured to send/receive packets in accordance with a second wireless protocol. The apparatus includes scheduling logic that determines whether a WLAN communication will complete before an end of a WLAN active time period. If the scheduling logic determines that the WLAN communication will not complete before the end of the WLAN active time period, the scheduling logic causes the WLAN controller to transmit a WLAN packet that encodes a NAV value that prevents an access point from using the wireless medium until an end of second time period. The second controller is configured to use the wireless medium during the second time period. | 07-04-2013 |
20130179715 | SYSTEMS AND METHODS FOR REDUCING ENERGY CONSUMPTION IN SENSOR NETWORKS - A system includes a volatile memory and state information management logic. The volatile memory includes a plurality of volatile storage locations. The state information management logic includes memory write tracking circuitry coupled to the volatile memory. The memory write tracking circuitry is configured to identify locations of the memory written subsequent to restoration of state information to the volatile memory on exit of a low-power mode of operation, and to store indicia of the identified locations. | 07-11-2013 |
20130182686 | OPTIMIZATION OF DUAL BSS SCHEDULING - An integrated circuit includes logic configured to determine a communication schedule of a device configured to perform Wi-Fi communications in a first Basic Service Set (BSS) network and in a second BSS network. The logic determines the communication schedule based at least in part on a first BSS network communication load of the device and on a second BSS network communication load of the device. The communication schedule defines the service time allocation of the device in the first BSS network and the service time allocation of the device in the second BSS network. At least one of the first and the second BSS networks is supportive of a peer-to-peer connection. | 07-18-2013 |
20130188670 | DYNAMIC IMPROVEMENT OF LINK SYMMETRY IN CO-LOCATED PLC AND RF NETWORKS - An electronic communication device comprises a first transceiver capable of a bi-directional communication session on a first communication medium; a second transceiver capable of a bi-directional communication session on a second communication medium; and a control logic coupled to the first transceiver and the second transceiver, wherein the control logic is configured to receive, from the first transceiver, a first signal, and cause, in response to the first signal, data transmitted by the first transceiver on the first communication medium as part of a communication session to be transmitted instead by the second transceiver on the second communication medium while the first transceiver continues to receive data as part of the communication session. | 07-25-2013 |
20130188673 | DYNAMIC MEDIUM SWITCH IN CO-LOCATED PLC AND RF NETWORKS - An electronic communication device comprises a first transceiver capable of a bi-directional communication session on a first communication medium; a second transceiver capable of a bi-directional communication session on a second communication medium; and a control logic coupled to the first transceiver and the second transceiver and capable of implementing a convergence layer, wherein the control logic is configured to receive, from the first transceiver, a first signal; and cause, in response to the first signal, data received and transmitted by the first transceiver on the first communication medium as part of a communication session to be received and transmitted instead by the second transceiver on the second communication medium. | 07-25-2013 |
20130217399 | PARTIAL CHANNEL MAPPING FOR FAST CONNECTION SETUP IN LOW ENERGY WIRELESS NETWORKS - A system comprising a controller, a scanner, and a transceiver. The controller is configured to identify a number of channels in which a beacon signal may be wirelessly transmitted. The number of channels is less than a total number of channels available for receiving transmissions. The scanner is configured to scan each of the number of channels for a first beacon signal. The transceiver is configured to receive the first beacon signal from one of the number of channels. | 08-22-2013 |
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 |
20130259016 | COEXISTENCE OF WIRELESS SENSOR NETWORKS WITH OTHER WIRELESS NETWORKS - A wireless device includes a wireless transceiver configured to transmit to and receive from nodes in a wireless sensor network (WSN) and control logic coupled to the first wireless transceiver. The wireless transceiver transmits a wireless packet to a node in the WSN based on the transmission coinciding with a break in transmissions for a second wireless network. Based on the wireless transceiver being configured to transmit the wireless packets utilizing time synchronized channel hopping, slot frames for packet transmissions in the WSN are time offset so as not to coincide with transmissions made on the second wireless network. Based on the wireless transceiver being configured to transmit the packets utilizing coordinated sampled listening, wake up sequence transmissions for the WSN are time offset so as not to coincide with the transmissions made on the second wireless network. | 10-03-2013 |
20130301453 | WIRELESS NETWORK WITH POWER AWARE TRANSMISSION CONTROL - A wireless device that tailors communications based on power parameters of the device. In one embodiment, a wireless device includes an energy source, a power monitor coupled to the energy source, a wireless transceiver, and a traffic controller coupled to the power monitor and the wireless transceiver. The power monitor is configured to measure a parameter of the energy source. The wireless transceiver is configured to wirelessly communicate via a wireless network. The traffic controller is configured to set length of packets to be transmitted based on the measured parameter of the energy source. | 11-14-2013 |
20140016625 | SYNCHRONIZED CHANNEL ACCESS IN COEXISTING WIRELESS NETWORKS - A system and method for arbitrating channel access in a wireless device including co-located network transceivers are disclosed herein. A wireless device includes a first wireless transceiver and a second wireless transceiver. The first transceiver is configured for operation with a first wireless network. The second transceiver is configured for operation with a second wireless network. The wireless device further includes logic that determines which of the first and second transceivers is enabled to transmit at a given time. The logic causes the first transceiver to transmit a notification signal indicating a time period during which the second transceiver of the wireless device will perform a first wireless transaction, and during which, based on receiving the notification signal, a different wireless device performs a second wireless transaction via the second wireless network without transmitting a notification signal. | 01-16-2014 |
20140023058 | Device for Operating Using Multiple Protocols in Wireless Networks - A network includes an access point using a first protocol and a station using both the first protocol and a second protocol. The station uses the first protocol before a first threshold and a second protocol after the first threshold. A first duration between the second threshold and the first threshold is at least of sufficient length for the station to receive one data packet from the access point and send an acknowledgment. The station transmits to the access point a current clear-to-send packet at a current time during a current exchange based on success or failure of a previous exchange during which a previous clear-to-send packet was transmitted to the access point at a previous time. | 01-23-2014 |
20140029583 | Systems and Methods for Time Optimization for Silencing Wireless Devices in Coexistence Networks - Embodiments provide systems and methods to optimize the time when to transmit a silencing frame, and hence, improve the overall network throughput and avoid access point transmission rate fall-back mechanism having an avalanche effect during coexistence of dissimilar wireless network technologies. A device comprises at least two dissimilar network technology subsystems, at least one subsystem of which is lower priority than at least another of the dissimilar subsystems. In some embodiments, a device is able to transmit a silencing frame during a transmission window within a lower priority technology network interval. In other embodiments, a device calculates a transmission window, the transmission window to occur within a lower priority technology network interval, and transmits a silencing frame during the transmission window. In further embodiments, a device is able to calculate a transmission window to occur during a lower priority technology network interval, and transmit a silencing frame during the calculated transmission window. | 01-30-2014 |
20140036751 | BEACON SCHEDULING FOR WIRELESS NETWORKS - A system and method for reducing energy consumption in a wireless network. In one embodiment, a system includes a network coordinator configured to manage access to a wireless network. The network coordinator includes a controller. The controller is configured to define a channel hopping list that specifies on which channel a beacon signal is transmitted in each slot frame of the wireless network. The controller is also configured to set a number of time slots in each slot frame based on a length of the channel hopping list. The controller is further configured to transmit a first beacon signal in each slot frame on a channel specified by the channel hopping list. The number of slots in each slot frame causes the first beacon signal to be transmitted on a same channel in each slot frame. | 02-06-2014 |
20140036877 | Scheduling Energy Harvesting Nodes in a Wireless Sensor Networks - A system and method for optimizing power consumption of energy harvesting nodes in a wireless sensor network. In one embodiment, a system includes a network coordinator. The network coordinator includes a wireless transceiver and a controller. The wireless transceiver is configured to provide access to the wireless sensor network. The controller is configured to determine whether a wireless device that is wirelessly communicating with the network coordinator is powered via energy harvesting. The controller is also configured to schedule, based on a determination that the wireless device is powered via energy harvesting, the wireless device to communicate via the wireless sensor network using a priority timeslot of a superframe of the wireless sensor network. The priority timeslot is a timeslot occurring in an initial portion of the superframe. | 02-06-2014 |
20140050210 | System and Method for Positioning - Embodiments of the invention include a method for creating probe requests. The method is used when positioning is required. A short probe request is constructed with SSID set to GPS SSID_NAME. Another method continues after a short probe response is received. It is determined if a SSID of the probe response matches the SSID of the short probe request. If it does send an ACK. | 02-20-2014 |
20140171108 | DYNAMIC ACCESS POINT BASED POSITIONING - A wireless device that includes an access point (AP) scanner, a transceiver, and a controller coupled to the AP scanner and transceiver. The AP scanner is configured to scan wireless network channels utilized by one or more APs to transmit data packets, probe responses, and beacons. The transceiver is configured to transmit one or more probe requests to the one or more APs and receive one or more probe responses and beacons from the one or more APs. The controller is configured to determine a proximate geographic position of the wireless device based on signal strength of the one or more probe responses and beacons received from the one or more APs. The controller also dynamically adapts a parameter utilized in determining the proximate geographic position of the wireless device. | 06-19-2014 |
20140293984 | ENHANCING PACKET AGGREGATION PERFORMANCE IN COEXISTING WIRELESS NETWORKS - A wireless combination (combo) device is coupled to an antenna for communicating via a first wireless network over a first band. A packet aggregator is coupled to the first wireless transceiver configures a frame aggregated packet for at least a portion of activities on the first wireless network. The frame aggregated packet includes a plurality of data packets and a dummy packet or spoofing so that said frame aggregated packet is extended in time or indicates an extension sufficient to overlap a Tx time interval or Rx time interval for communications occurring over a second wireless network. The first wireless network and said second wireless network are overlapping networks. | 10-02-2014 |
20140323070 | AUTOMATIC FM RADIO STATION UPDATE - A method comprises determining, by a radio, whether a current preferred radio station currently tuned to by a radio is experiencing a faded signal. Based on determining that the current preferred radio station is experiencing a faded signal, the method further includes automatically selecting, by the radio, a replacement preferred radio station. A radio with such capabilities is also disclosed. | 10-30-2014 |
20140355502 | NETWORK POWER OPTIMIZATION VIA WHITE LISTS - A device and method for controlling radio power in a wireless sensor network. A wireless sensor device includes a wireless transceiver, a white list generator, and power control logic. The wireless transceiver is configured to transmit and receive via a wireless sensor network. The white list generator configured to identify wireless sensor nodes that communicate directly with the wireless sensor device via the wireless sensor network, to identify time slots assigned for communication between the wireless sensor device and each of the identified wireless sensor nodes, and to create and maintain a list of the identified wireless sensor nodes and corresponding time slots. The power control logic is configured to power the transceiver for reception of transmissions from each identified wireless sensor node based on the identified time slots corresponding to the identified wireless sensor node provided in the list. | 12-04-2014 |
20150016393 | SYSTEMS AND METHODS FOR SILENCING WIRELESS DEVICES - Embodiments provide systems and methods to optimize the time when to receive transmissions from dissimilar wireless networks, and hence, improve the overall network throughput and avoid access point transmission rate fall-back mechanism having an avalanche effect during coexistence of dissimilar wireless network technologies. A receiver comprises at least two dissimilar network technology subsystems and is able to receive transmissions from dissimilar wireless network technology subsystems during a predetermined reception window. | 01-15-2015 |
20150030010 | SYNCHRONIZED CHANNEL ACCESS IN COEXISTING WIRELESS NETWORKS - A system and method for arbitrating channel access in a wireless device including co-located network transceivers are disclosed herein. A wireless device includes a first wireless transceiver and a second wireless transceiver. The first transceiver is configured for operation with a first wireless network. The second transceiver is configured for operation with a second wireless network. The wireless device further includes logic that determines which of the first and second transceivers is enabled to transmit at a given time. The logic causes the first transceiver to transmit a notification signal indicating a time period during which the second transceiver of the wireless device will perform a first wireless transaction, and during which, based on receiving the notification signal, a different wireless device performs a second wireless transaction via the second wireless network without transmitting a notification signal. | 01-29-2015 |