13th week of 2015 patent applcation highlights part 34 |
Patent application number | Title | Published |
20150085804 | METHOD AND APPARATUS FOR GENERATING, TRANSMITTING, AND RECEIVING A DATA FRAME IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a technique relating to a method and apparatus for generating, transmitting, and receiving a data frame having a newly proposed format in a wireless communication system. According to the technique, the method for generating a data frame in a wireless communication system comprises the following steps: generating at least one first subframe; generating at least one second subframe; and generating a data frame including the first and second subframes, wherein the first and second subframes include length information of a MAC protocol data unit (MPDU) contained in the first and second subframes, and the length information of the MPDU contained in the second subframe is zero. | 2015-03-26 |
20150085805 | RADIO COMMUNICATION METHOD, BASE STATION AND USER EQUIPMENT - Embodiments of the present invention disclose a radio communication method, a base station and a user equipment. In a system in which the base station supports a full-duplex radio communication, the base station needs to group user equipments within its service range, configure an identical radio resource pattern for user equipments in a same group and configures different radio resource patterns for user equipments in different groups. In this way, in a process that the base station selects, according to the configured radio resource patterns, multiple user equipments, which are in different communication states on the same radio resource for communication, not all the user equipments will receive the uplink data sent by other user equipment, and only user equipments in different groups may have different communication states on the same radio resource respectively. In this way, an interference between user equipments can be reduced appropriately. | 2015-03-26 |
20150085806 | Channel State Information Feedback - A wireless device receives a first reference signal from a first base station and estimates a first signal strength based on the received first reference signal. The wireless device receives a second reference signal from a second base station and estimates a second signal strength based on the received second reference signal. The wireless device estimates an interference value based, at least in part, on the second reference signal. The wireless device estimates a signal to interference ratio value based on the second signal strength and a total interference value. The total interference value is computed based upon the interference value or the interference value plus the first signal strength. | 2015-03-26 |
20150085807 | COMMUNICATION METHOD AND SYSTEM USING UPLINK MULTIPLE INPUT MULTIPLE OUTPUT TECHNOLOGY - The present invention discloses a communication method and system using MIMO technology. The communication method includes: a network side device determines whether a UE uses a single-stream mode or a multi-stream mode as an uplink data transmission mode; and the network side device notifies the UE of indication information indicating the determined uplink data transmission mode. The communication method and system help the UE to use a specific uplink data transmission mode in combination with various factors, therefore reducing a delay of an uplink data transmission, improving an uplink data transmission speed, thereby meeting development needs of uplink high-speed data communication services of the UE. | 2015-03-26 |
20150085808 | METHOD AND APPARATUS FOR PERFORMING CARRIER MANAGEMENT IN CARRIER AGGREGATION SYSTEM - A carrier aggregation system, includes transmitting a first signaling to configure one additional carrier to a user equipment (UE) at which the additional carriers are deactivated, to configure a timer to each additional carrier for the UE by which the carrier is deactivated after the corresponding timer expiry; transmitting a second signaling that carries an activation indication to the UE to activate one deactivated additional carrier in the configured carriers for the UE; activating at least one deactivated additional carrier, starting the timer, controlling the UE to start Physical Downlink Control Channel (PDCCH) monitoring and Physical Downlink Shared Channel (PDSCH) receiving on the activated additional carrier; transmitting PDCCH on the activated additional carrier for the UE, by which the corresponding timer being restarted; deactivating the activated carrier after the corresponding timer expiry, controlling the UE to stop the PDCCH monitoring and the PDSCH receiving on the deactivated additional carrier. | 2015-03-26 |
20150085809 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD - A data alignment method capable of preventing degradation in demodulation performance due to variation in signal qualities when a data signal to which a Turbo code is applied is transmitted simultaneously from a plurality of cells. The method divides signal components to be used for data alignment into resources common to all the cells and resources dependent on the cells and transmits encoded and rate-matched data with the first half thereof aligned to the resources common to all the cells and the second half thereof aligned to the resources dependent on the cells. | 2015-03-26 |
20150085810 | Random Access Preamble Design - A method of facilitating a user equipment (UE) communicating with a base station (BS) via a cell of a mobile communications system is disclosed. The UE selects a random access preamble (RAP) from a set of RAPs and transmits the RAP to the BS. The BS receives the RAP and estimates a time of arrival of the RAP. A pre-defined set is used in generating the set of RAPs via at least one Zadoff-Chu sequence. The pre-defined set includes all of the following values: 0, 13, 15, 18, 22, 26, 32, 38, 46, 59, 76, 93, 119, 167, 279, 419. | 2015-03-26 |
20150085811 | WIRELESS COMMUNICATIONS SYSTEM, WIRELESS STATION, BASE STATION, AND COMMUNICATIONS METHOD - A wireless communications system includes a base station; and a wireless station. The base station reserves, in advance, a radio parameter that includes at least any one among a frequency resource and communication method used in transmission of uplink data by a first control signal transmitted to the wireless station and upon receiving a second control signal from the wireless station, provides authorization for the transmission of uplink data, by transmitting a third control signal to the wireless station. The wireless station, upon transmitting the second control signal to the base station, uses the radio parameter configured by the first control signal received from the base station to perform transmission of the uplink data to the base station. | 2015-03-26 |
20150085812 | Carrier Indicator Field Usage And Configuration In Carrier Aggregation - Format of a downlink control channel for a user equipment UE is changed in conjunction with switching the UE between being enabled for cross carrier scheduling and being disabled for cross carrier scheduling. The changed format is used on at least one serving cell of the UE's configured set of component carriers CCs. In one embodiment the changed format comprises an explicit carrier indicator field CIF for the case in which the switching is from disabled to enabled; and the changed format has no explicit CIF when the switching is from enabled to disabled. In another embodiment switching from disabled to enabled comprises the UE's configured set of CCs being changed from one to multiple cells; and switching from enabled to disabled comprises the UE's configured set of CCs being changed from multiple cells to one cell. In one embodiment the changed format is implicit. | 2015-03-26 |
20150085813 | DEVICE AND METHOD FOR PROVIDING MOBILE INTERNET CALL SERVICE - There are provided a device and method for providing a mobile Internet call service. In order to reduce a call waiting time for an mVoIP call, when a call is an initial call after power of a terminal is turned on or using the main call number, information for a call connection is acquired in advance and a light weight session is maintained. When the mVoIP call is made later, the maintained light weight session is used to make a direct P2P call. Therefore, it is possible to reduce a call connection time. As a result, when the mVoIP call attempt is made, a call waiting time is significantly reduced and thus it is possible to provide a rapid response and improve user satisfaction. When the light weight session is maintained, access to a separate server system is not performed. As a result, it is possible to connect a P2P call even when call traffic is heavy. | 2015-03-26 |
20150085814 | System and Method for Semi-Persistent and Dynamic Scheduling and Discontinuous Reception Control - Methods of combining semi-persistent resource allocation and dynamic resource allocation are provided. Packets, such as VoIP packets, are transmitted on the uplink and downlink using respective semi-persistent resources. For each mobile device, awake periods and sleep periods are defined. The semi-persistent resources are aligned with the awake periods so that most of the time the mobile device can turn off its wireless access radio during the sleep periods. In addition, signalling to request, and to allocate, resources for additional packets are transmitted during the awake periods, and the resources allocated for the additional packets are within the awake windows. | 2015-03-26 |
20150085815 | METHOD FOR FEEDING BACK ACK/NACK FOR DOWNLINK DATA TRANSMISSION IN RADIO COMMUNICATION SYSTEM - Embodiments of the present invention provide a method for feeding back ACK/NACK for downlink data transmission in a radio communication system. The method is applied on a mobile terminal and includes the following steps: receiving downlink data, calculating, with respect to each Component Carrier (CC), a number of ACKs of ACK/NACK information of downlink data sub-frames of the CC, and feeding back numbers of ACKs of the ACK/NACK information of the downlink data sub-frames of CCs. | 2015-03-26 |
20150085816 | METHOD OF RESOURCE BLOCK (RB) BUNDLING - A method of sizing bundled resource blocks (RBs) having at least one user equipment (UE)-specific demodulation reference signal in an orthogonal frequency division multiplexing (OFDM) system is disclosed. According to one embodiment, the method includes: receiving configuration information related to at least one UE-specific demodulation reference signal; receiving a plurality of resource blocks (RBs) from a network, wherein the plurality of resource blocks comprises the at least one UE-specific demodulation reference signal, at least one cell-specific demodulation reference signal or data, wherein a number of the plurality of RBs is dependent on a size of a system bandwidth, the size of the system bandwidth corresponding to one of four size ranges; and processing at least one of the received plurality of RBs by bundling the plurality of RBs into RB bundles, wherein the size of each RB bundle is based on the one of the four size ranges. | 2015-03-26 |
20150085817 | METHOD FOR ACHIEVING RENDEZVOUS FOR COGNITIVE RADIO NETWORKS - A method for achieving rendezvous in a multiple access network having two or more access channels includes the steps of generating channel access sequences in rounds for each user of the multiple access network, wherein each round includes at least one jump-pattern and at least one stay-pattern, performing the at least one jump-pattern alternated by the at least one stay-pattern in each round, and whereupon the at least one jump-pattern alternated by the stay-pattern in each round are performed, continuously generate at least one channel access sequence rounds and perform the jump-pattern of the channel access sequence rounds until a user in the network achieves rendezvous with its intended neighbour user or users. | 2015-03-26 |
20150085818 | RESOURCE ALLOCATION METHOD FOR D2D COMMUNICATIONS, BASE STATION USING THE SAME, AND USER EQUIPMENT USING THE SAME - A resource allocation method for device to device (D2D) communications and a base station using the same are provided. In the method, resource patterns are assigned, wherein each of the resource patterns comprises resource groups comprising the resource block(s). Frequency index and time index of each resource group in a time-frequency domain of resource pattern are determined, and there exists at least one of the resource patterns such that the time index of a first resource group and the time index of a second group are different. The resource groups of each resource pattern to the UEs are respectively assigned according to the frequency index and the time index of each of the resource groups in the time-frequency domain of each resource pattern. | 2015-03-26 |
20150085819 | RADIO BASE STATION APPARATUS, MOBILE STATION APPARATUS AND RADIO COMMUNICATION METHOD - To provide a radio base station apparatus and radio communication method capable of performing radio communications using downlink reference signal structures suitable for antenna virtualization, a radio base station apparatus ( | 2015-03-26 |
20150085820 | Scattered Pilot Pattern And Channel Estimation Method For MIMO-OFDM Systems - Methods and apparatus are provided for inserting data symbols and pilot symbols in an OFDM (orthogonal frequency division multiplexing) transmission resource utilizing frequency hopping patterns for the data symbols and/or the pilot symbols. Data symbols and pilot symbols are allocated for down link (base station to mobile station) and up link (mobile station to bases station) transmission resources in a two-dimensional time-frequency pattern. For each antenna of a MIMO-OFDM (multiple input multiple output OFDM) communication system, pilot symbols are inserted in a scattered pattern in time-frequency and data symbols are inserted in an identical frequency-hopping pattern in time-frequency as that of other antennas. | 2015-03-26 |
20150085821 | Methods and Systems for OFDM using Code Division Multiplexing - In some embodiments of the invention, OFDM symbols are transmitted as a plurality of clusters. A cluster includes a plurality of OFDM sub-carriers in frequency, over a plurality of OFDM symbol durations in time. Each cluster includes data as well as pilot information as a reference signal for channel estimation. In some embodiments, a plurality of clusters collectively occupy the available sub-carrier set in the frequency domain that is used for transmission. In some embodiments of the invention data and/or pilots are spread within each cluster using code division multiplexing (CDM). In some embodiments pilots and data are separated by distributing data on a particular number of the plurality of OFDM symbol durations and pilots on a remainder of the OFDM symbol durations. CDM spreading can be performed in time and/or frequency directions. | 2015-03-26 |
20150085822 | TRANSMISSION METHOD AND DEVICE FOR A DOWNLINK REFERENCE SIGNAL - The present invention relates a method in which a base station transmits a downlink signal by using a plurality of layers comprises the steps of: multiplexing and transmitting dedicated reference signals for the plurality of layers on the basis of a reference signal pattern, wherein 24 resource element positions comprised in the reference signal pattern are set as 6 groups, the 6 groups are set as 2 high-level groups, the reference signal for the plurality of layer is split and placed in the 2 high-level groups, and the reference signal for 2 or more layers placed in the same group is subjected to code-division multiplexing. | 2015-03-26 |
20150085823 | SEAMLESS APPLICATION CONNECTIVITY - In some implementations, a request to switch to using a second network connection is received at a first computing device that is currently communicating with a second computing device over a first network connection. While still using the first network connection, the second network connection may be initiated. During a period of transition, the first computing device may communicate with the second computing device using both the first network connection and the second network connection. To use both the first and second network connections, data from the second computing device may be received over the first network connection, and data may be sent to the second computing device over the second network connection. The first computing device may identify an end of the period of transition. In response, the first computing device may communicate with the second computing device using only the second network connection. | 2015-03-26 |
20150085824 | WIRELESS TERMINAL AND METHOD OF OPERATING - A wireless terminal can communicate with a first network of first type and a second network of second different type. The wireless terminal performs a packet-domain attachment to the first network and initiates a ready timer indicating that the wireless terminal is in an attached state and has recently sent data to the first network. The wireless terminal initiates an inter-system change from the first network to the second network whereby the wireless terminal becomes registered to the second network. Advantageously the wireless terminal has means for rendering the ready timer ineffective when the inter-system change is performed. The network apparatus has means for initiating its own ready timer dependent on the attachment occurring, this ready timer also indicating that the wireless terminal is in an attached state and has recently sent data to the first network. | 2015-03-26 |
20150085825 | COMMUNICATION APPARATUS AND CONTROL METHOD - According to an embodiment, a communication apparatus includes a first wireless communicator, a storage, and a controller. The first wireless communicator establishes a wireless connection to a network. The storage stores therein data. The controller causes the first wireless communicator to establish a connection to the network when a determination value satisfies a connection condition. The determination value is characterized by at least one of operating conditions, positional information, communication conditions, and communication quality of the communication apparatus. The controller causes the first wireless communicator to obtain information through the network and store the information in the storage or further transmit the information stored in the storage through the network when the determination value satisfies an obtaining condition. The controller disconnects the connection between the first wireless communicator and the network when the determination value satisfies a disconnection condition. | 2015-03-26 |
20150085826 | COMMUNICATIONS SYSTEM - A method performed by a base station includes generating a request for resource status information, sending the generated request to a neighboring base station, receiving one or more resource status update messages from the neighboring base station in response to the requested resource status information, and performing load balancing operations in dependence upon the received one or more resource status update messages. | 2015-03-26 |
20150085827 | ENHANCEMENTS FOR OPERATION OF A TIMER - A method and an apparatus for operating a timer in an integrated circuit (IC) are disclosed herein. The IC includes a timer, a receiver configured to receive a circuit switched (CS) service notification, a transmitter configured to transmit an evolved packet system mobility management extended service request (ESR) message, and a processor configured to start the timer in response to transmitting the ESR and stop the timer in response to reception of a handover command and completion of a CS fallback procedure by the receiver, wherein the handover command directs the IC to handover to another radio access technology (RAT) so that a CS call may be established. The processor may be configured to stop the timer in response to reception of a cell change command and completion of a CS fallback procedure by the receiver, wherein the cell change command directs the IC to perform a cell change procedure. | 2015-03-26 |
20150085828 | METHOD FOR OBTAINING SERVING GATEWAY, MOBILITY MANAGEMENT NODE, DATA GATEWAY, AND SYSTEM - The present invention provides a method for obtaining a serving gateway, a mobility management node, a data gateway, and a system. A method for obtaining a serving gateway according to an embodiment of the present invention includes: when a UE is switched from an old-side mobility management node to a new-side mobility management node, sending, by the new-side mobility management node, a domain name resolution request to a domain name system DNS server according to access information of the UE; receiving a hostname of a device returned, according to the domain name resolution request, by the DNS server; obtaining a hostname of a new-side available S-GW; and selecting the new-side available S-GW closest to the device on geographic topology as a new-side S-GW. User service data transmission time delay can be reduced through the method. | 2015-03-26 |
20150085829 | CONTROLLING HANDOVER OF A HIGH-PRIORITY USER EQUIPMENT OPERATING NEAR A CELL EDGE - A method and apparatus in an eNodeB for controlling handover of a User Equipment (UE) operating near a cell edge of a serving cell. The apparatus determines whether the UE has a Quality of Service (QoS) Class Identifier (QCI) level defined for utilizing a Channel Quality Indication (CQI) Threshold parameter that is set at a level greater than a CQI handover level used to initiate handover of the UE to a neighbor cell. If not, the normal CQI handover level is utilized. If so, the apparatus monitors UE CQI reports to determine when the CQI of the UE (UEcqi) in the serving cell is lower than the CQI Threshold and greater than the CQI handover level. When this condition is met, the apparatus forces a handover of the UE from the serving cell to the neighbor cell. The CQI Threshold parameter may be set at a level that also ensures the UEcqi for the serving cell is lower than the UEcqi for the neighbor cell when the forced handover is performed. | 2015-03-26 |
20150085830 | WIRELESS COMMUNICATION NODE HAVING NEIGHBOR NODE INFORMATION REGISTERED - A wireless communication node on the multi-hop wireless network has a control message exchanger for exchanging control messages with peripheral nodes to determine neighbor nodes whose information should be registered in a neighbor node information storage; a timing adjuster for adjusting, depending on a connective state of the wireless communication node in the network, a timing at which a first control message is sent back in response to a second control message arriving from other wireless communication nodes; and a registered node determiner for primarily referencing the order of arrival of a first control message from the other wireless communication node to determining neighbor nodes whose information should be registered in the neighbor node information storage. | 2015-03-26 |
20150085831 | ASYMMETRICAL FORWARD/REVERSE TRANSMISSION BANDWIDTH - A wireless communications system employs code-division multiple access information transmission techniques where the uplink and downlink transmission bandwidths are unequal. The higher bandwidth is an integer multiple of the lower bandwidth. The present system requires a base station and a subscriber unit to have two pseudo-random code generators which can be clocked separately. Alignment of the uplink and downlink pseudo-random spreading codes is achieved by truncating the code sequence for the lower speed link at the conclusion of a complete code sequence for the higher speed link. | 2015-03-26 |
20150085832 | MAINTENANCE OF CHANNEL USAGE IN A WIRELESS COMMUNICATION SYSTEM - Data is accessed from a network via a wireless communication link. A determination is made as to whether payload data has been received from a subscriber's terminal. If so, then a request is sent for a first set of traffic channels, and the payload data is transmitted over the first set of traffic channels. | 2015-03-26 |
20150085833 | TECHNIQUES TO MANAGE HETEROGENOUS CARRIER TYPES - Techniques to manage heterogeneous carrier types are described. User equipment may comprise a processor circuit and a network control component for execution on the processor circuit to locate a synchronization signal (SS) and a cell-specific reference signal (CRS) in a physical resource block (PRB) pair of a long term evolution (LTE) system, the PRB pair having a physical signal pattern for a first carrier type, the physical signal pattern for the first carrier type to have a same number of defined positions between the SS and the CRS within the PRB pair as a physical signal pattern for a second carrier type. Other embodiments are described and claimed. | 2015-03-26 |
20150085834 | TIME DIVISION LONG TERM EVOLUTION (TD-LTE) FRAME STRUCTURE MODIFICATION - A method of wireless communication includes communicating with a base station using an extended special subframe. Communicating with the base station using the extended special subframe may be performed by disabling an uplink pilot time slot and an adjacent uplink subframe. | 2015-03-26 |
20150085835 | OUT-OF-SYNCHRONIZATION DETECTION AND CORRECTION DURING COMPRESSION - Methods and apparatus are described for synchronizing compression for communication between a user equipment (UE) and a serving node. The methods and apparatus include determining that a compressor memory of a compressor and a decompressor memory of a decompressor are out-of-synchronization based on a checksum failure. Further, the methods and apparatus include resetting the compressor memory and the decompressor memory to a predetermined state in response to determining that the compressor memory and the decompressor memory are out-of-synchronization, wherein the compressor memory and the decompressor memory are synchronized at the predetermined state. | 2015-03-26 |
20150085836 | UPLINK SIGNAL TRANSMISSION METHOD AND STATION DEVICE, AND UPLINK SIGNAL RECEIVING METHOD AND ACCESS POINT DEVICE - The present invention provides an uplink signal transmission method and apparatus. A method for transmitting an uplink signal to an access point (AP) by means of a station (STA) in a Wireless local area network (WLAN) system comprises: sensing a medium being occupied by another STA; and transmitting the uplink signal to the AP on the medium being occupied by another STA. | 2015-03-26 |
20150085837 | METHOD OF SYNCHRONIZATION AND DETECTION FOR A MULTI-STATION WIRELESS COMMUNICATION SYSTEM (WiFi), AND WIRELESS COMMUNICATION SYSTEM UTILIZING THIS METHOD - A method is provided for detection and synchronization for a multistation wireless communication system (WiFi) implementing a layer, termed the MAC or Medium Access Control layer, provided for implementing a multiple access protocol and a physical layer, termed the PHY or Physical Layer, provided for achieving synchronization and detection functions, the MAC layer transmitting commands to the PHY layer so as to carry out the multiple access protocol and the PHY layer generating in response at least one waveform carrying synchronization signals and detection signals, the MAC layer implements an orthogonal or quasi-orthogonal cyclic signal to construct the at least one waveform. | 2015-03-26 |
20150085838 | RADIO COMMUNICATION METHOD, RADIO BASE STATION AND RADIO COMMUNICATION SYSTEM - A radio communication method is provided in which beam forming information for forming transmission beams directed from the small base station to the user terminal are generated based on position-related information of the user terminal acquired by communication between the macro base station and the user terminal using a coverage carrier and position-related information of the small base station, and the small base station precodes at least one of a common control signal and a reference signal that are common in a small cell (C2) based on the beam forming information and transmits the precoded signal from a plurality of transmitting antennas using a capacity carrier. | 2015-03-26 |
20150085839 | UPLINK TIMING ERROR REDUCTION METHOD AND APPARATUS - The technology presented in this disclosure pertains to telecommunication. For example, there is presented a method of operating a wireless terminal | 2015-03-26 |
20150085840 | TIME DIVISION LONG TERM EVOLUTION (TD-LTE) FRAME STRUCTURE - A method of wireless communication includes communicating with a base station using a special subframe that extends a guard period over an uplink pilot time slot and one or more disabled, adjacent uplink subframes. The method also includes associating a control information subframe with a specific downlink subframe while accounting for both cell radius extension and loss of the one or more disabled, adjacent uplink subframes used to communicate the extended special subframe. | 2015-03-26 |
20150085841 | CARRIER SENSE ADAPTIVE TRANSMISSION (CSAT) IN UNLICENSED SPECTRUM - Systems and methods for Carrier Sense Adaptive Transmission (CSAT) and related operations in unlicensed spectrum are disclosed to reduce interference between co-existing Radio Access Technologies (RATs). The parameters for a given CSAT communication scheme may be adapted dynamically based on received signals from a transceiver for a native RAT to be protected and an identification of how that RAT is utilizing a shared resource such as an unlicensed band. Other operations such as Discontinuous Reception (DRX) may be aligned with a CSAT Time Division Multiplexed (TDM) communication pattern by way of a DRX broadcast/multicast message. Different TDM communication patterns may be staggered in time across different frequencies. Channel selection for a co-existing RAT may also be configured to afford further protection to native RATs by preferring operation on secondary channels as opposed to primary channels. | 2015-03-26 |
20150085842 | METHOD AND APPARATUS FOR DEACTIVATING SECONDARY CARRIERS IN MOBILE COMMUNICATION SYSTEM USING CARRIER AGGREGATION - A method and an apparatus for deactivating secondary carriers in a mobile communication system using carrier aggregation are provided. A communication method, for a User Equipment (UE), includes activating a secondary carrier, starting a first timer upon activation of the secondary carrier, starting a second timer when the first timer expires, and deactivating the activated secondary carrier when the second timer expires. | 2015-03-26 |
20150085843 | APPARATUS AND METHOD FOR CONTROLLING IN-DEVICE COEXISTENCE INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM - Method and apparatus for controlling in-device coexistence (IDC) interference in a wireless communication system are described in the present invention. The present invention includes transmitting UE capability information whether the UE has a capability to measure IDC, to a base station (BS); receiving measurement configuration information whether the UE is allowed to send IDC indication, from the BS; and transmitting the IDC indication and at least one of measurements which are a measurement in consideration of IDC and a measurement without consideration of IDC to the BS. It is possible to control reducing occurrence of in-device coexistence interference. | 2015-03-26 |
20150085844 | ACCESS POINT COORDINATED RE-ASSOCIATION OF WIRELESS DEVICES - A first AP in a wireless network determines that a wireless client device should re-associate from the first AP to a second AP of the wireless network. The first AP communicates an AP coordination message from the first AP to the second AP to share coordination information with the second AP. The first AP coordinates with the second AP to cause the re-association of the wireless client device in accordance with the coordination information. The first and second AP may coordinate directly to synchronize re-association activities. Re-association activities may include the use of a configuration message to the wireless client device, managing transmit power of beacon messages from the first and second APs, or forced disassociation and blocking. The first AP may maintain a record of which re-association activity was successful in causing the wireless client device to re-associate to the second AP. | 2015-03-26 |
20150085845 | TUNNELING PACKET EXCHANGE IN LONG TERM EVOLUTION PROTOCOL BASED NETWORKS - A system that incorporates the subject disclosure may include, for example, receiving from a wireless device a request for a network connection and facilitating, in response to the request, a communication session between a wireless access node in communication with the wireless device and a packet data network. Control signals are exchanged between a second network device and a packet data network gateway. The second network device includes a mobility anchoring function and operating in an evolved packet core of a long term evolution system. Eligibility of the wireless communication device to participate in a direct tunnel connection is determined, the direct tunnel allowing transfer of user data packets between the wireless device and packet data network to bypass the mobility anchoring function. Establishment of the direct tunnel connection is facilitated to transfer multiple user data packets between the wireless device and the packet data network. Other embodiments are disclosed. | 2015-03-26 |
20150085846 | RADIO ACCESS METHOD FOR REDUCING ROUTING OVERHEAD IN COGNITIVE RADIO ADHOC NETWORKS - A radio access method for use in a radio access device in cognitive radio ad-hoc networks, the radio access method comprising: comparing additional information about neighboring radio access devices, which exist in the cognitive radio ad-hoc networks, in a second layer of the radio access device with additional information about the neighboring radio access devices in a third layer of the radio access device in the cognitive radio ad-hoc networks; and generating a routing control message when the additional information of the second layer is different from the additional information of the third layer to broadcast the routing control message. | 2015-03-26 |
20150085847 | WIRELESS COMMUNICATION DEVICE, INFORMATION PROCESSING DEVICE, AND COMMUNICATION METHOD - Users are enabled to readily use desired applications. | 2015-03-26 |
20150085848 | Method and Apparatus for Controlling Wireless Network Access Parameter Sharing - In a non-limiting and example embodiment, a method is provided for controlling access to wireless network access parameters, comprising: providing, by an apparatus to a second apparatus, credentials for accessing to a wireless network, detecting, by the apparatus, an identity of a third apparatus, and sending, by the apparatus, a message to the second apparatus to allow to deliver the credentials to the third apparatus. | 2015-03-26 |
20150085849 | METHOD AND APPARATUS FOR UPDATING SYSTEM INFORMATION IN WIRELESS LAN SYSTEM - The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for updating system information in a wireless LAN system. A method for a station (STA) to update system information in a wireless communication system according to one embodiment of the present invention comprises the steps of: if the value of a change sequence field received by the STA from an access point (AP) is different from the value of the change sequence field stored in the STA, transmitting, to the AP, a probe request frame including the change sequence field set to the value of the change sequence field stored in the STA; and a step of receiving, from the AP, a probe response frame responding to the probe request frame including the change sequence field. | 2015-03-26 |
20150085850 | Enabling and Controlling Access to Wireless Hot Spots - A process of enabling and controlling access to a wireless hotspot by a wireless portable device is disclosed. An access request is sent, seeking access to a wireless hotspot, to an authenticating entity and response to the access request is awaited. Additional verification information is provided when requested by the wireless hotspot and wireless network data is exchanging between the wireless portable device and the wireless hotspot. Additionally, the access request includes an identifier used by the authenticating entity to authenticate the wireless portable device. | 2015-03-26 |
20150085851 | Channel Sounding Techniques for a Wireless Communication System - A technique of operating a wireless communication system includes determining respective geometries of multiple subscriber stations, which include a first subscriber station and a second subscriber station, with respect to a serving base station. Respective channel sounding bandwidths for sounding the channel between the multiple subscriber stations and the serving base station are then scheduled, based on the respective geometries. The respective channel sounding bandwidths include a first channel sounding bandwidth (associated with the first subscriber station) and a second channel sounding bandwidth (associated with the second subscriber station). The first channel sounding bandwidth is greater than or equal to the second channel sounding bandwidth and the first subscriber station has a lower geometry than the second subscriber station. | 2015-03-26 |
20150085852 | COMMUNICATION SYSTEM AND TIME SYNCHRONIZATION METHOD - In an extensive distribution system with no delay guarantee network used as a relay network, an influence of a fluctuation of a communication delay time is avoided to conduct a high-precision time synchronization. First and second delay control devices installed in junctions between communication networks and a relay network, respectively, have functions of retaining first and second time information, and setting a first relay network passing time of a first communication signal directed from a time dissemination device toward a time receiving device through a relay network, and a second relay network passing time of a second communication signal directed from the time receiving device toward the time dissemination device, respectively. In measurement of communication delay time of the first communication network and the second communication network prior to time synchronization, the first and second relay network passing times are unified in advance to exclude uncertainty of the communication time. | 2015-03-26 |
20150085853 | SYNCHRONIZATION OF DISTRIBUTED NODES - Dynamic, untethered array nodes are frequency, phase, and time aligned/synchronized, and used to focus their transmissions of the same data coherently on a target or in the target's direction, using time reversal or directional beamforming. Information for alignment/synchronization may be sent from a master node of the array to other nodes, over non-RF links, such as optical and acoustic links. Some nodes may be connected directly to the master nodes, while other nodes may be connected to the master node through one or more transit nodes. A transit nodes may operate to (2) terminate the link when the alignment/synchronization information is intended for the node, and (2) pass through the alignment/synchronization information to another node without imposing its local clock properties on the passed through alignment/synchronization information. In this way, an end point node may be aligned/synchronized to the master node without a direct link between the two nodes. | 2015-03-26 |
20150085854 | METHOD AND APPARATUS FOR OBTAINING SYNCHRONIZATION FOR COMMUNICATION BETWEEN DEVICES - A method and an apparatus for obtaining synchronization of a terminal for communication between devices when a base station collapses are provided. The method includes, when a preamble signal is not received from the base station, maintaining a first synchronization for a predetermined time using a timer, transmitting a first preamble signal at a first synchronization point, performing a synchronization procedure with at least one neighbor terminal based on the first preamble signal, and, after the synchronization procedure, performing communication with the at least one neighbor terminal. In addition, when a preamble signal is not received from a base station, a first preamble signal from a relevant neighbor terminal is monitored for a predetermined time. When the first preamble signal is not received from the relevant neighbor terminal for the predetermined time, a second preamble signal is transmitted at an arbitrary point. | 2015-03-26 |
20150085855 | METHOD AND SYSTEM FOR MANAGING THE COMMUNICATION BETWEEN TWO USERS - The present invention relates to a method for managing the communication between a calling user ( | 2015-03-26 |
20150085856 | REGISTERING A DEVICE WITH A VoIP CORE NETWORK - Disclosed are a management method and server suitable for managing a request issued by a device on a VoIP core network for the purpose of registering a current address of contact of the device. The management method comprises, on receiving the request, obtaining a number of addresses of contact registered on the core network in association with the public identifier of the device. When that number has reached a maximum registration capacity defined for the public identifier, an interrogation message is sent to the addresses of contact registered on the core network in association with the public identifier if, at the end of a predetermined time period, at least one of the addresses of contact has not responded to said interrogation message or is declared as being inactive in response to the interrogation message, accepting the request. Otherwise the request is rejected. | 2015-03-26 |
20150085857 | Method and Apparatus for Enabling Subscriber Lines to Join DSL Vectoring System, and DSL Vectoring System - The present invention discloses a method and an apparatus for enabling subscriber lines to join a DSL vectoring system the DSL vectoring system and can shorten overall joining time of subscriber lines in a DSL system. The method includes grouping subscriber lines into at least two groups according to time when the subscriber lines request to go online, where the at least two groups of subscriber lines that are obtained after the grouping include a first group of subscriber lines and a second group of subscriber lines; starting a joining process for all the subscriber lines in the first group of subscriber lines; and during the joining process of the first group of subscriber lines, putting all the subscriber lines in the second group of subscriber lines into a joining process. | 2015-03-26 |
20150085858 | MIXED MEDIA CALL ROUTING - In one aspect, a method of mixed media communication is provided. The method includes initializing, via an electronic device, a session associated with a sender device, the session including data of a first media type; determining a destination for the data of a first media type, the determination based on the first media type and available destination information; providing the data of the first media type to the determined destination; receiving data of a second media type for the session with the sender device; determining a second destination for the data of the second media type, the determination based on the second media type and the available destination information; and providing the data of the second media type to the second destination. A device and computer-readable medium for mixed media communication are also described. | 2015-03-26 |
20150085859 | Two-Stage Port-Channel Resolution in a Multistage Fabric Switch - In some embodiments, a data packet may be received at a leaf switch. A port-channel associated with a destination port for the data packet may be identified, and the data packet may be transmitted to the destination port via the identified port-channel. | 2015-03-26 |
20150085860 | DISTRIBUTED CONNECTIVITY VERIFICATION PROTOCOL REDUNDANCY - In one embodiment, a connectivity verification protocol (CVP) session for a particular virtual interface (VI) may operate on a particular group of two or more line cards (LCs) on a network device. The group of LCs may then transmit CVP session packets, at a reduced rate that is sufficient to maintain the CVP session based on a negotiated CVP full rate, onto the particular VI through ingress path processing on the network device. Ingress path processing, in particular, takes transmitted CVP session packets and egresses them onto an appropriate LC of the network device currently responsible for the VI egress. Also, in response to receiving CVP session packets for the VI on an LC of the network device currently responsible for the VI ingress, the receiving LC may forward the received CVP session packets to the particular corresponding group of LCs, which may then process the received CVP session packets. | 2015-03-26 |
20150085861 | PORT EMPTY TRANSITION SCHEDULING - Aspects of port empty transition scheduling are described herein. In one embodiment, when one or more cells are added to a queue in a network communications device, an enqueue indicator is generated. The enqueue indicator identifies a number of cells added to the queue. With reference to the enqueue indicator, a queue scheduler maintains a count of cells enqueued for communication and issues a port pick credit for a port of the network communications device. A port scheduler schedules a pick for communicating over the port with reference to the port pick credit and forwards the pick to the queue scheduler. In turn, the queue scheduler forwards a queue pick to the queue, and at least one of the cells is forwarded to dequeue logic. According to aspects of the embodiments described herein, empty port scheduling inefficiencies may be avoided and network throughput increased. | 2015-03-26 |
20150085862 | Forwarding Multicast Data Packets - A non-gateway routing bridge of a data center, receives multicast data packets from a multicast source inside the data center and sends the multicast data packets through a designed router (DR) router port and a gateway router port. The DR router port and the gateway router port correspond to a virtual local area network identifier (VLAN ID) and multicast address in the multicast data packet. | 2015-03-26 |
20150085863 | EFFICIENT MEMORY BANDWIDTH UTILIZATION IN A NETWORK DEVICE - A system for efficient memory bandwidth utilization may include a depacketizer, a packetizer, and a processor core. The depacketizer may generate header information items from received packets, where the header information items include sufficient information for the processor core to process the packets without accessing the payloads from off-chip memory. The depacketizer may accumulate multiple payloads and may write the multiple payloads to the off-chip memory in a single memory transaction when a threshold amount of the payloads have been accumulated. The processor core may receive the header information items and may generate a single descriptor for accessing multiple payloads corresponding to the header information items from the off-chip memory. The packetizer may generate a header for each payload based at least on on-chip information and without accessing off-chip memory. Thus, the subject system provides efficient memory bandwidth utilization, e.g. at least by reducing the number of off-chip memory accesses. | 2015-03-26 |
20150085864 | METHOD FOR TRANSMITTING DATA - A method is described for transmitting data between participants of a serial, ring-shaped communications arrangement in which the participants are serially connected to one another, wherein a data packet is passed from a participant provided as a master to further participants provided as slaves, wherein the data packet is passed from slave to slave, and wherein address information of the data packet is altered by each slave. | 2015-03-26 |
20150085865 | METHOD AND SYSTEM FOR DYNAMICALLY ALLOCATING SERVICES FOR SUBSCRIBERS DATA TRAFFIC - Access services are dynamically allocated for processing received data traffic by creating routing information for data traffic associated with a particular subscriber, subscriber equipment and/or network address information. The routing information identifies services that the data traffic can be subjected to and the order in which the services are provided. When an attached request is received, appropriate services for the requesting subscriber are retrieved from a database based on particular identifying information which may include the identification of the subscriber, subscriber equipment, network address or other information. The services are organized in a routing path and the allocated network address and the routing path are transferred to a smart router. Data traffic, associated with the allocated network address is then routed through servers to provide the identified services. | 2015-03-26 |
20150085866 | Service Process Control Method and Network Device - A service process control method and a network device. The method includes: selecting, according to an execution policy of at least one service deployed on a network device, M data processing modules for processing a packet received by the network device, and determining a processing sequence for the selected M data processing modules to process the packet; and invoking the selected M data processing modules to sequentially process, according to the processing sequence, the packet. In the foregoing technical solutions of embodiments of the present invention, an execution sequence for a data processing module to process the packet is dynamically generated according to a policy set corresponding to the service, thereby reducing an unnecessary processing process and redundant information collection in a service execution procedure, improving service processing flexibility, and enhancing overall performance of the device. | 2015-03-26 |
20150085867 | Distributed Fibre Channel Forwarder - A distributed Fiber Channel over Ethernet (FCoE) Forwarder (FCF) and a distributed Fibre Channel Switch are described. The Distributed FCF is realized by instantiating respective connections between at least one Controlling FCF and a plurality of FCoE Data-Plane Forwarder (FDF) devices and between individual FDF devices. The Distributed FC Switch is realized by instantiating respective connections between at least one Controlling Switch and a plurality of FC Data-Plane Forwarder (FCDF) devices and between individual FCDF devices. | 2015-03-26 |
20150085868 | Semiconductor with Virtualized Computation and Switch Resources - A semiconductor substrate has a processor configurable to support execution of a hypervisor controlling a set of virtual machines and a physical switch configurable to establish virtual ports to the set of virtual machines. | 2015-03-26 |
20150085869 | REDUCED ACKNOWLEDGEMENT OF PSEUDOWIRE STATUS SIGNALLING MESSAGES - Various exemplary embodiments relate to a method of acknowledging a pseudowire (PW) status message by a PW node, the method including: receiving at the PW node a PW status message from a peer node; determining that acknowledging the PW status message will reduce the number of PW status messages sent by the peer node; and sending an acknowledgement message to the peer node acknowledging the receipt of the PW status message from the peer node. | 2015-03-26 |
20150085870 | CO-OPERATIVE LOAD SHARING AND REDUNDANCY IN DISTRIBUTED SERVICE CHAINS IN A NETWORK ENVIRONMENT - An example method for co-operative load sharing and redundancy in distributed service chains is provided and includes deriving a service chain comprising a plurality of services in a distributed virtual switch (DVS) network environment, where a first service node provides a first portion of a specific service in the plurality of services to a packet traversing the network, and a second service node provides a second portion of the specific service to the packet, and configuring service forwarding tables at virtual Ethernet Modules associated with respective service nodes in the service chain. In a specific embodiment, the first service node and the second service node provide substantially identical service functions to the packet, wherein the specific service comprises the service functions. In various embodiments, each service node tags each packet to indicate a service completion history of service functions performed on the packet at the service node. | 2015-03-26 |
20150085871 | DYNAMICALLY SCRIPTABLE IP PACKET PROCESSING ENGINE - A dynamically-scriptable router including a packet input port, a packet output port, a dynamically scriptable packet processing engine, and an application interface for loading a packet processing script into the dynamically scriptable packet processing engine. | 2015-03-26 |
20150085872 | SYSTEM FOR DYNAMIC CONTACT CENTER ROUTING - A communication request from a contact center caller may be received in a contact center via any of a variety of communication devices equipped with any of a variety of operating systems, any of a variety of applications and with any of a variety of device capabilities. The communication request may also be received via any of the multiple different communication mediums. The contact center may have multiple agent devices logged in to the contact center. Agent devices logged in to the contact center may have different device capabilities. A system for dynamic contact center routing may route the communication request to an agent device based on device capabilities of a communication device used by the caller, and device capabilities of the agent device. | 2015-03-26 |
20150085873 | HEADER REPLICATION IN ACCELERATED TCP (TRANSPORT CONTROL PROTOCOL) STACK PROCESSING - In one embodiment, a method is provided. The method of this embodiment provides storing a packet header at a set of at least one page of memory allocated to storing packet headers, and storing the packet header and a packet payload at a location not in the set of at least one page of memory allocated to storing packet headers. | 2015-03-26 |
20150085874 | PROVISIONING SIP-BASED REMOTE VPN PHONES - Methods, systems and computer readable media for provisioning SIP-based remote VPN phones are disclosed. | 2015-03-26 |
20150085875 | ADAPTIVE VIDEO WHITE SPOT LEARNING AND USER BANDWIDTH DELIVERY CONTROL SYSTEM - A system and method that utilize a learning system to maintain a set of geographical locations indicating an area where network data coverage is poor. When it is determined that a client device is moving towards such an area, the client is forced or instructed to switch to a lower delivery bitrate for video segments in order to force the client's Adaptive Bit Rate (ABR) playback buffer to fill itself with enough low-quality video segments to enable the client to cross the area without video playback interruption. Thus, the client mobile device may be preemptively forced to choose the lowest bitrate specified in a manifest file for the delivered video segments as the bitrate for downloading video segments when approaching the poor coverage area. Hence, the client device can maintain a minimum level of Quality of Service (QoS) when moving through network areas with poor data coverage. | 2015-03-26 |
20150085876 | HANDLING INCOMPRESSIBLE DATA PACKETS ON MULTIPLE DATA FLOWS - Methods and apparatus of compression on multiple data flows for communication between a user equipment (UE) and a serving node. The methods and apparatus include receiving multiple data flows for compression, wherein each of the multiple data flows includes a plurality of data packets, with each data packet having a data packet header and a payload. Further, the methods and apparatus include determining a compression state for each of the multiple data flows. Moreover, the methods and apparatus include performing a first compression algorithm on each of the multiple data flows determined to have a compression state set to a do-not-compress state, wherein the first compression algorithm includes compressing the data packet header of each data packet without compressing the payload of each data packet. | 2015-03-26 |
20150085877 | TRANSPORT SYSTEM AND TRANSPORT METHOD - A transport system comprises 2 apparatuses. The first transport apparatus notifies, for each of first physical ports, to the second transport apparatus, a valid first lane count and identification information of the first physical port. The second transport apparatus is configured to: obtain, for each of second physical ports, a valid second lane count and identification information of the second physical port; associate, based on the valid second lane count and the identification information of the second physical port, and the valid first lane count and the identification information of the first physical port, the identification information of the first and second physical port; and transmit, when data including identification information of one of the first physical ports is transmitted, the data from the second physical port that is identified by the identification information associated with the identification information of the one of the first physical ports. | 2015-03-26 |
20150085878 | PROTOCOL DATA UNIT INTERFACE - An interface can be designed that efficiently constructs descriptors for streams of protocol data units (PDUs) and provides coherent views of the PDUs and the PDU stream for a requesting application regardless of location within a buffer pool for PDUs. The interface creates a descriptor for each PDU written into the buffer pool and links the descriptors in accordance with the appropriate order of the corresponding PDUs. The interface can create PDU descriptors hierarchically. For instance, a PDU descriptor for a PDU of a layer N protocol can refer to one or more PDU descriptors of a layer N−1 protocol. | 2015-03-26 |
20150085879 | Memory Transfer Optimization of Network Adapter Data Placement when Performing Header-Data Split Operations - Mechanisms are provided, in a data processing system comprising a host system and a network adapter, for processing received frames of data over a network connection. The mechanisms receive, in the host system from the network adapter, a plurality of frames of data. The mechanisms record, by the host system, for each frame in the plurality of frames, a header size associated with the frame over a current predetermined interval. The mechanisms determine, by the host system, a receive buffer address offset for receive buffers in the host system for a next predetermined interval based on the recorded header sizes of the plurality of frames over the current predetermined interval. In addition, the mechanisms configure, by the host system, the network adapter to utilize the receive buffer address offset to perform data transfers with the host system. | 2015-03-26 |
20150085880 | Memory Transfer Optimization of Network Adapter Data Placement when Performing Header-Data Split Operations - Mechanisms are provided, in a data processing system comprising a host system and a network adapter, for processing received frames of data over a network connection. The mechanisms receive, in the host system from the network adapter, a plurality of frames of data. The mechanisms record, by the host system, for each frame in the plurality of frames, a header size associated with the frame over a current predetermined interval. The mechanisms determine, by the host system, a receive buffer address offset for receive buffers in the host system for a next predetermined interval based on the recorded header sizes of the plurality of frames over the current predetermined interval. In addition, the mechanisms configure, by the host system, the network adapter to utilize the receive buffer address offset to perform data transfers with the host system. | 2015-03-26 |
20150085881 | DATA FRAME FOR PLC HAVING DESTINATION ADDRESS IN THE PHY HEADER - A physical layer (PHY) data frame for use in conjunction with processor in a node, processor coupled to a program memory for storing a sequence of operating instructions. The frame has a preamble, PHY header, a MAC header and a MAC payload. The PHY header includes a destination address field having a destination address therein. The destination address is used by the processor to determine match with the node address. | 2015-03-26 |
20150085882 | REDUCTION OF ON-HOLD CALL BANDWIDTH CONSUMPTION - A computer processor determines that a call has been placed on hold. The computer processor sends a first packet to a local exchange carrier (LEC) of the calling device, wherein the first packet includes instructions to release the bandwidth of the call placed on-hold, between the LEC and a recipient of the call. The computer processor sends a second packet intermittently to the LEC, wherein the second packet maintains a connection between the calling device of the call and the LEC. The computer processor determines that a representative is available, wherein the representative is the recipient of the call, and in response to determining the representative that is available responds to the call, the computer processor sending a third packet to connect the calling device of the call to the representative that is available. | 2015-03-26 |
20150085883 | Hybrid Communication Networks - Systems and methods for designing, using, and/or implementing hybrid communication networks are described. In various embodiments, these systems and methods may be applicable to power line communications (PLC). For example, one or more of the techniques disclosed herein may include methods to coordinate medium-to-low voltage (MV-LV) and low-to-low voltage (LV-LV) PLC networks when the MV-LV network operates in a frequency subband mode and the LV-LV network operates in wideband mode (i.e., hybrid communications). In some cases, MV routers and LV routers may have different profiles. For instance, MV-LV communications may be performed using MAC superframe structures, and first-level LV to lower-level LV communications may take place using a beacon mode. Lower layer LV nodes may communicate using non-beacon modes. Also, initial scanning procedures may encourage first-to-second-level LV device communications rather than MV-to-first-level LV connections. | 2015-03-26 |
20150085884 | WAVELENGTH-SELECTIVE SWITCH FOR SPACE-DIVISION MULTIPLEXED SYSTEMS - An optical apparatus includes a front optics section and a spectrometer section. The front optics section includes a spot de-multiplexer configured to receive a plurality of multi-mode optical signals each having a plurality of modal components, and to output in a linear array of a corresponding plurality of optical beams for each multimode optical signal. The spectrometer section includes a wavelength steering element configured to separate each of the optical beams into a plurality of wavelength channels. A fiber steering element is configured to steer the wavelength channels between the optical beams. | 2015-03-26 |
20150085885 | HIGH POWER SHORT PULSE FIBER LASER - A pulsed laser comprises an oscillator and amplifier. An attenuator and/or pre-compressor may be disposed between the oscillator and amplifier to improve performance and possibly the quality of pulses output from the laser. Such pre-compression may be implemented with spectral filters and/or dispersive elements between the oscillator and amplifier. The pulsed laser may have a modular design comprising modular devices that may have Telcordia-graded quality and reliability. Fiber pigtails extending from the device modules can be spliced together to form laser system. In one embodiment, a laser system operating at approximately 1050 nm comprises an oscillator having a spectral bandwidth of approximately 19 nm. This oscillator signal can be manipulated to generate a pulse having a width below approximately 90 fs. A modelocked linear fiber laser cavity with enhanced pulse-width control includes concatenated sections of both polarization-maintaining and non-polarization-maintaining fibers. Apodized fiber Bragg gratings and integrated fiber polarizers are included in the cavity to assist in linearly polarizing the output of the cavity. Very short pulses with a large optical bandwidth are obtained by matching the dispersion value of the fiber Bragg grating to the inverse of the dispersion of the intra-cavity fiber. | 2015-03-26 |
20150085886 | ANGULAR BEAM ADJUSTMENT SYSTEMS AND METHODS FOR LASER SYSTEMS - Embodiments are directed to systems and methods for correcting lateral and angular displacement of laser beams within a laser cavity. For some embodiments, such systems and methods are used to correct angular displacement of laser beams within a laser cavity that result from varying the lasing wavelength in a tunable laser system. | 2015-03-26 |
20150085887 | SEPARATELY CONTROLLABLE ARRAY OF RADIATION ELEMENTS - A good way to avoid extreme current levels when supplying large amounts of power is to increase the voltage. The easiest way to do this is connecting the radiation elements (e.g. laser diode pixels) in series (La | 2015-03-26 |
20150085888 | METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE AND SEMICONDUCTOR DEVICE - To improve characteristics of a semiconductor device (semiconductor laser), an active layer waveguide (AWG) comprised of InP is formed over an exposed part of a surface of a substrate having an off angle ranging from 0.5° to 1.0° in a [1-1-1] direction from a (100) plane to extend in the [0-1-1] direction. A cover layer comprised of p-type InP is formed over the AWG with a V/III ratio of 2000 or more. Thereby, it is possible to obtain excellent multiple quantum wells (MQWs) by reducing a film thickness variation of the AWG. Moreover, the cover layer having side faces where a (0-11) plane almost perpendicular to a substrate surface mainly appears can be formed. A sectional shape of a lamination part of the cover layer and the AWG becomes an approximately rectangular shape. Therefore, an electrification region can be enlarged and it is possible to reduce a resistance of the semiconductor device. | 2015-03-26 |
20150085889 | SEMICONDUCTOR LASER LIGHT SOURCE HAVING AN EDGE-EMITTING SEMICONDUCTOR BODY - A semiconductor laser light source comprising an edge-emitting semiconductor body ( | 2015-03-26 |
20150085890 | SEMICONDUCTOR LASER DEVICE AND MANUFACTURING METHOD THEREOF - A semiconductor laser device includes an n-type clad layer, a first p-type clad layer and a ridge stripe. The device also includes an active layer interposed between the n-type clad layer and the first p-type clad layer, and a current-blocking layer formed on side surfaces of the ridge stripe. The ridge stripe of the device includes a second p-type clad layer formed into a ridge stripe shape on the opposite surface of the first p-type clad layer from the n-type clad layer. The ridge stripe is formed such that a first ridge width as the width of a surface of the second p-type clad layer exists on the same side as the first p-type clad layer and a second ridge width as the width of a surface of the second p-type clad layer exists on the opposite side from the first p-type clad layer. | 2015-03-26 |
20150085891 | SEMICONDUCTOR LASER DEVICE ASSEMBLY - A semiconductor laser device assembly includes (A) a semiconductor laser element and (B) a diffraction grating that configures an external resonator, returns diffraction light other than zero-th order diffraction light to the semiconductor laser element, and outputs the zero-th order diffraction light to the outside. An extension direction of a diffraction surface of the diffraction grating and a main vibration direction of a field of a laser beam incident on the diffraction grating are substantially parallel to each other. | 2015-03-26 |
20150085892 | All Optical High Energy Radiation Source - A method for producing electromagnetic radiation comprising: firing a first laser pulse and generating a plasma region, the first laser pulse penetrating at least partially into the plasma region to create a plasma density wake in the plasma region; providing a group of charged particles in the plasma region arranged so as to be accelerated in the plasma density wake of the first laser pulse; reflecting the first laser pulse after the first laser pulse has penetrated into the plasma region, to give a reflected laser pulse; and arranging the reflected laser pulse to interact with the group of charged particles to generate an electromagnetic radiation. | 2015-03-26 |
20150085893 | PRISM BEAM EXPANDER ADJUSTMENT APPARATUS AND METHOD FOR ADJUSTING THE SAME - An apparatus and method for adjusting prism beam expander. The prism beam expander adjustment apparatus has a light source, a baseplate, a precise rotary stage, support columns, a two-dimensional slide stage, the first 90-degree bellcrank lever, an indication light source, the second 90-degree bellcrank lever, an optical filter, a photodetector, a computer, and an assembly platform. Incidence angles of all prisms of a prism beam expander can be precisely demarcated and designed beam magnification is obtained with the preferred adjustment methods. The parallel of the prisms can be guaranteed by monitoring the pitching of the prisms in the adjustment process. As a result, the linewidth narrowing and cavity losses decreasing can be improved by application of the fixed prism beam expander. | 2015-03-26 |
20150085894 | METHOD FOR DIAGNOSING FAULT WITHIN A FUEL VAPOR SYSTEM - A method for diagnosing a fault within a evaporative emission control system of an automotive vehicle. The method monitors the carbon canister temperature during a system leak test. The leak test here is undertaken with the engine running, and engine vacuum is employed to evacuate the EVAP system. If the evacuation succeeds in reaching a target vacuum, and a temperature gain in the canister is observed, then the system infers proper system operation. Failure to achieve a target vacuum causes the system to determine a likely cause of the failure based on the temperature response of the carbon canister. | 2015-03-26 |
20150085895 | LAMP ASSEMBLY FOR A THERMOGRAPHIC NONDESTRUCTIVE EVALUATION SYSTEM - A thermographic nondestructive evaluation system includes a lamp assembly having a lamp. The lamp is configured to be positioned within an internal cavity of a target object and to emit an energy pulse toward an interior surface of the internal cavity. The lamp includes at least one curved portion, the at least one curved portion is curved relative to a longitudinal axis of the lamp, and a first curvature of the curved portion is selected to substantially correspond to a second curvature of the internal cavity. | 2015-03-26 |
20150085896 | Method and equipment for measuring the heat flow through constructions - Method and equipment for measuring the heat flow (J) through a construction (K) having a thickness (D), where a temperature difference (ΔT) is formed transversely through the thickness of the construction. According to the invention, at least two temperature sensors (G | 2015-03-26 |
20150085897 | INFRARED SENSOR - An infrared sensor includes a thermopile connected in series with an ambient temperature compensation resistance temperature detector (RTD) and four electrical leads. The thermopile produces a voltage as a function of temperature of a point of interest, while the RTD varies in resistance as a function of ambient temperature. Two of the leads deliver current to energize the RTD. The other two leads are used for sensing voltages produced by the thermopile and the RTD. | 2015-03-26 |
20150085898 | TEMPERATURE SENSOR - Provided is a temperature sensor which does not easily cause a crack in a Ti—Al—N-based thermistor material layer when the film is bent, can be directly deposited on a film or the like without firing, and has a high reliability with a high heat resistance. The temperature sensor includes an insulating film | 2015-03-26 |
20150085899 | CODING IN A POSITIONING SYSTEM - Embodiments describe determining position by selecting a set of digital pseudorandom sequences. The magnitudes of the cross-correlation between any two sequences of the chosen set are below a specified threshold. A subset of digital pseudorandom sequences are selected from the set such that the magnitudes of the autocorrelation function of each member of the subset, within a specified region adjacent to the peak of the autocorrelation function, are equal to or less than a prescribed value. Each transmitter transmits a positioning signal, and at least a portion of the positioning signal is modulated with at least one member of the subset. At least two transmitters of the plurality of transmitters modulate respective positioning signals with different members of the subset of digital pseudorandom sequences. | 2015-03-26 |
20150085900 | METHOD FOR ACQUIRING A SATELLITE RADIO NAVIGATION SIGNAL AND SATELLITE RADIO NAVIGATION RECEIVER APPLYING THIS METHOD - This acquisition method is provided for acquiring a satellite signal emitted by a radio navigation satellite, the satellite signal containing a cyclic pseudo-random identification code specific to the satellite. The acquisition method includes the generation of a local code producing a replica of the identification code, and the production of a combined correlation (EDDC) of a received signal with the local code, the combined correlation corresponding to the linear combination of a first double delta correlation and of a second narrow correlation. | 2015-03-26 |
20150085901 | CIRCUITS, DEVICES, AND PROCESSES FOR IMPROVED POSITIONING SATELLITE RECEPTION AND OTHER SPREAD SPECTRUM RECEPTION - An integrated circuit for facilitating spread spectrum reception of data having a data bit period includes an hypothesis search circuit ( | 2015-03-26 |
20150085902 | RFDAC Transmitter Using Multiphase Image Select FIR DAC and Delta Sigma Modulator with Multiple Rx Band NTF Zeros - A transmitter includes a delta-sigma modulator characterized by a noise transfer function having a multitude of zeroes positioned substantially near a frequency band of a receive signal. The transmitter further includes, in part, a multi-phase digital-to-analog (DAC) converter converting an output signal of the delta-sigma modulator to an analog signal. The DAC is characterized by a transfer function that passes the desired signal to its output and attenuates a multitude of images of the sampling clock signal. The transmitter transmits at a frequency defined by an odd multiple of a fraction of the sampling clock signal frequency. The DAC includes a number of stages each pair of which is associated with one of the images being attenuated. The delta-sigma modulator includes a multitude of stages each associated with a different one of the zeroes. Each stage of said delta-sigma modulator optionally receives three tap coefficients. | 2015-03-26 |
20150085903 | Wireless Connectors - A wireless connector includes a plurality of printed circuit boards (PCBs) ( | 2015-03-26 |