Patents Assigned to InterDigital Technology
  • Patent number: 9030933
    Abstract: A wireless user equipment (UE) configured to initiate a packet based session includes a reservation setup protocol (RSVP) message generator configured to transmit a RSVP PATH message. The RSVP PATH message includes a direction indication. The direction indicator indicates that reservations should be made for the UE to transmit only, to receive only or to both transmit and receive. The UE also includes an RSVP message receiver configured to receive an RSVP RESV message indicating that reservations have been made as a result of the RSVP PATH message.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: May 12, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Kamel M Shaheen, Sharif M Shahrier
  • Patent number: 9026169
    Abstract: A method and apparatus are disclosed comprising a combined open loop/closed loop uplink power control scheme for E-UTRA. The combined open and closed loop method for UL intra-cell PC controls the wireless transmit receive unit (WTRU) transmit power spectral density (PSD), PSDTx, (e.g. power per RB).
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: May 5, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Sung-Hyuk Shin, Robert L. Olesen, Zinan Lin, Donald M. Grieco
  • Patent number: 9026173
    Abstract: A method and apparatus may be used for selecting one of a plurality of multi-band APs to associate with a multi-band WTRU. The multi-band APs may broadcast frequency band information regarding multiple frequency bands on which the multi-band AP is configured to operate. The multi-band WTRU may select a multi-band AP to associate with and a frequency band to use to communicate with the selected multi-band AP based on the frequency band information. The multi-band AP may transmit frequency band information from the that indicates that a characteristic, (e.g., throughput, path loss, load, capacity, backhaul), of the selected frequency band and disassociate with the multi-band WTRU or to continue to associate with the multi-band WTRU via a different frequency band.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: May 5, 2015
    Assignee: InterDigital Technology Corporation
    Inventor: Arty Chandra
  • Patent number: 9019993
    Abstract: The present invention relates to a method for confirming the delivery of a data packet in a mesh network by sending an acknowledgement (ACK) to an ingress mesh point (IMP). A mesh network comprises a plurality of mesh points that are wirelessly linked together. A data packet sent by a station (STA) is received by an IMP. A MAC frame is generated for transmission of the data packet and the frame is forwarded to an egress mesh point (EMP) in order to provide a service by the mesh network. The MAC frame includes a field comprising an IMP address and an EMP address. When the EMP, (or optionally an intermediate mesh point), receives a data packet successfully, the EMP or the intermediate mesh point sends an ACK to the IMP or preceding mesh point.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: April 28, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Catherine Livet, Guang Lu, Juan Carlos Zuniga
  • Patent number: 9019940
    Abstract: A method for using a wireless digital base station to receive, process and transmit a plurality of communications having independent data rates establishing a first communication channel having a first data communication rate to support a first communication; determining the data rate required to support the first communication; selecting one or more transmission channels, from a plurality of available transmission channels, required to support said required data rate; and transmitting the first communication using one or more selected transmission channels. The plurality of available transmission channels includes at least one B or D channel.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: April 28, 2015
    Assignee: InterDigital Technology Corporation
    Inventor: Faith M. Ozluturk
  • Patent number: 9014747
    Abstract: A combined open loop and closed loop (channel quality indicator (CQI)-based) transmit power control (TPC) scheme with interference mitigation for a long term evolution (LTE) wireless transmit/receive unit (WTRU) is disclosed. The transmit power of the WTRU is derived based on a target signal-to-interference noise ratio (SINR) and a pathloss value. The pathloss value pertains to the downlink signal from a serving evolved Node-B (eNodeB) and includes shadowing. An interference and noise value of the serving eNodeB is included in the transmit power derivation, along with an offset constant value to adjust for downlink (DL) reference signal power and actual transmit power. A weighting factor is also used based on the availability of CQI feedback.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: April 21, 2015
    Assignee: Interdigital Technology Corporation
    Inventors: Sung-Hyuk Shin, Donald M. Grieco, Robert L. Olesen
  • Patent number: 9014032
    Abstract: A method for controlling discontinuous reception in a wireless transmit/receive unit includes defining a plurality of DRX levels, wherein each DRX level includes a respective DRX cycle length and transitioning between DRX levels based on a set of criteria. The transitioning may be triggered by implicit rules.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: April 21, 2015
    Assignee: Interdigital Technology Corporation
    Inventors: Stephen E. Terry, Peter S. Wang, Jin Wang
  • Patent number: 9007991
    Abstract: A method and apparatus are used for providing assistance data to wireless transmit/receive units (WTRU)s. The assistance data may include information regarding neighboring access points (AP)s. The assistance data may be transmitted to WTRUs using multicast, broadcast, and/or point-to-point signaling. The assistance data may be used to facilitate ring and handover of WTRUs from one AP to another.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: April 14, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Marian Rudolf, Teresa Joanne Hunkeler, Shamim Akbar Rahman, Stephen G. Dick
  • Patent number: 9008065
    Abstract: Methods and network nodes are described. A network node receives an attach request message from a wireless transmit/receive unit (WTRU) via a cellular radio access network (RAN). The attach request message includes a mobile station (MS) radio access capability information element (IE), and the MS radio access capability IE includes a field that indicates whether the WTRU is capable of receiving services from a core network via a non-cellular wireless access network. The network node provides services from the core network to the WTRU.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: April 14, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Debashish Purkayastha, Kamel M. Shaheen
  • Patent number: 8995422
    Abstract: A method of operating a wireless transmit receive unit (WTRU) and a WTRU configured to receive a radio link control (RLC)/a medium access control (MAC) header. The header is coded for reduced transmission time interval (RTTI) operation. The header includes a 16-bit cyclic redundancy check (CRC) of an RLC/MAC payload associated with the RLC/MAC header.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: March 31, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Behrouz Aghili, Stephen G. Dick, Prabhakar R. Chitrapu, Marian Rudolf
  • Patent number: 8995921
    Abstract: A method for taking measurements with a smart antenna in a wireless communication system having a plurality of STAs begins by sending a measurement request from a first STA to a second STA. At least two measurement packets are transmitted consecutively from the second STA to the first STA. Each measurement packet is received at the first STA using a different antenna beam. The first STA performs measurements on each measurement packet and selects an antenna beam direction based on the measurement results.
    Type: Grant
    Filed: December 27, 2004
    Date of Patent: March 31, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Ana Lucia Iacono, Arty Chandra, Inhyok Cha, Paul Marinier, Vincent Roy
  • Patent number: 8996078
    Abstract: A method for increasing data rate in wireless communications includes selectively activating a plurality of hardware accelerators, and performing, using the hardware accelerators, data processing for modem data based on parameters received from a processor.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: March 31, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Douglas R. Castor, Edward L. Hepler, Michael F. Starsinic, William C. Hackett, David S. Bass, Joseph W. Gredone, Paul L. Russell, Jr., Richard P. Gorman
  • Patent number: 8995554
    Abstract: A method and apparatus of reducing interference in space frequency block coding (SFBC) communication are disclosed. SFBC encoding is performed on at least one pair of symbols. The symbols are assigned to subcarriers in accordance with a frequency assignment pattern assigned to a cell. Different frequency assignment patterns are assigned to neighboring cells. Cells in the network may be divided into a plurality of groups and a different frequency assignment pattern may be assigned to each group of cells. The frequency assignment pattern may be defined such that subcarriers mapped to a pair of symbols in one cell are interlaced to subcarriers mapped to a pair of symbols in a neighbor cell. Alternatively, the frequency assignment pattern may be defined such that subcarriers mapped to a pair of symbols in one cell are shifted in a neighbor cell.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: March 31, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Afshin Haghighat, Yingxue Li
  • Patent number: 8995991
    Abstract: Service data is transferred in a wireless communication system. A first service identification is synchronously transmitted for reception by a group of users of a cell in the system. The group of users does not include all of the users of the cell. Each of the group of users receives the service identification. Each of the group of users monitors for a second service identification being transmitted over a downlink shared channel. The service data is transmitted over the downlink shared channel with the second service identification. Each of the group of users detects the second service identification and receives the service data of the downlink shared channel.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: March 31, 2015
    Assignee: InterDigital Technology Corporation
    Inventor: Stephen E. Terry
  • Patent number: 8989003
    Abstract: A code division multiple access (CDMA) communication device comprises a medium access controller (MAC) configured to receive data from a plurality of channels. Each channel is associated with a priority and an identifier. The MAC is further configured to multiplex the data of the plurality of channels for transmission over a CDMA channel based on the priority.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: March 24, 2015
    Assignee: InterDigital Technology Corporation
    Inventor: Stephen E. Terry
  • Patent number: 8989744
    Abstract: A method for assigning a tracking area (TA) is disclosed. A mobility state of a wireless transmit/receive unit (WTRU) is determined and the TA is assigned based on the determined mobility state. Also disclosed is a method for accessing a closed subscriber group (CSG) TA.A CSG TA identifier is received at a WTRU and is stored. A CSG TA broadcast is received and the broadcast CSG TA is accessed if an identifier of the broadcast CSG TA matches the stored CSG TA identifier. Also disclosed is a method for changing a mobility state of a WTRU. A current mobility state of the WTRU is determined and a predetermined metric of the WTRU is examined. The predetermined metric is evaluated to determine if the metric has crossed a threshold and the mobility state is changed based on the evaluated metric.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: March 24, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Peter S. Wang, Rajat P. Mukherjee, Jin Wang, Shankar Somasundaram, James M. Miller, Ulises Olvera-Hernandez
  • Patent number: 8982837
    Abstract: A wireless transmit receive unit (WTRU) is configured to operate in an high speed data packet access (HSDPA) mode in a cell and/or state and to clear HSDPA resources when moving out of the cell and/or state. The WTRU is configured to clear HSDPA resources when conditions to perform high speed downlink shared channel reception are not met.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: March 17, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Diana Pani, Rocco Di Girolamo, Paul Marinier
  • Patent number: 8983524
    Abstract: A method and apparatus are described for controlling transmitter power in a wireless communication system in which both dedicated and shared channels are utilized. A wireless transmit/receive unit (WTRU) may receive a first channel (e.g., downlink shared channel), power commands for a second channel (e.g., dedicated channel) and power commands for a third channel (e.g., uplink shared channel). The WTRU may transmit in a transmission time interval at least one of the second channel and the third channel. Acknowledgments and negative acknowledgements to signals received over the first channel may be sent on the third channel. The WTRU may determine a transmission power level of the second channel in response to the second channel power commands and not the third channel power commands. The WTRU may determine a transmission power level of the third channel in response to the third channel power commands and not the second channel power commands.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: March 17, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Stephen G. Dick, Marian Rudolf
  • Publication number: 20150071243
    Abstract: A wireless communication system includes an infrastructure device for transmitting and receiving communications to and from a plurality of wireless user terminals. Each wireless user terminal includes a receiver and a controller that receives a plurality of orthogonal frequency division multiplexing (OFDM) signals on a first carrier frequency of a downlink. Each of the plurality of OFDM signals includes carrier frequency assignment information indicating a carrier frequency to transmit uplink data and spatial pattern information indicating a spatial pattern. In response to the carrier frequency assignment information of each of the plurality of OFDM signals, a transmitter and the controller of the wireless user terminal transmit a plurality of uplink signals. Each of the plurality of uplink signals are transmitted on the indicated carrier frequency and using the indicated spatial pattern.
    Type: Application
    Filed: November 12, 2014
    Publication date: March 12, 2015
    Applicant: InterDigital Technology Corporation
    Inventors: Juan Carlos Zuniga, Teresa J. Hunkeler
  • Patent number: 8976806
    Abstract: Methods and apparatus are described for providing compatible mapping for backhaul control channels, frequency first mapping of control channel elements (CCEs) to avoid relay-physical control format indicator channel (R-PCFICH) and a tree based relay resource allocation to minimize the resource allocation map bits. Methods and apparatus (e.g., relay node (RN)/evolved Node-B (eNB)) for mapping of the Un downlink (DL) control signals, Un DL positive acknowledgement (ACK)/negative acknowledgement (NACK) and/or relay-physical downlink control channel (R-PDCCH) (or similar) in the eNB to RN (Un interface) DL direction are described. This includes time/frequency mapping of above-mentioned control signals into resource blocks (RBs) of multimedia broadcast multicast services (MBMS) single frequency network (MBSFN)-reserved sub-frames in the RN cell and encoding procedures for these.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: March 10, 2015
    Assignee: Interdigital Technology Corporation
    Inventors: Kalpendu R. Pasad, Sung-Hyuk H. Shin, Mihaela C. Beluri, Marian Rudolf, Pascal M. Adjakple, John W. Haim