Patents Assigned to InterDigital Technology
  • Patent number: 8855313
    Abstract: A system and method for providing variable security levels in a wireless communication network. The present invention optimizes the often conflicting demands of highly secure wireless communications and high speed wireless communications. According to a preferred embodiment of the present invention, various security sensors are scanned to determine the likely presence of an intruder within a predetermined trust zone. If an intruder is likely present, the security level is changed to the highest setting, and consequently a lower data rate, while the intruder is identified. If the identified intruder is in fact a trusted node, the security level is returned to a lower setting. If the identified intruder is not a trusted node, the security level is maintained at an elevated state while the intruder is within the trust zone.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: October 7, 2014
    Assignee: InterDigital Technology Corporation
    Inventors: Akinlolu Oloruntosi Kumoluyi, Alexander Reznik, Guodong Zhang, Prabhakar R. Chitrapu, Sung-Hyuk Shin, Yingming Tsai
  • Publication number: 20140294179
    Abstract: A method and apparatus are disclosed relating to ciphering and de-ciphering of packet units in wireless devices during retransmission in wireless communications. The packet units are re-segmented with the ciphering done on the re-segmented packet unit or on a radio link control protocol data unit (RLC PDU) with or without segmentation. Alternatively, the re-segmentation is done on the radio link control service data unit (RLC SDU) with or without segmentation. Alternatively, the ciphering process and multiplexing of the RLC PDU is done in the medium access control (MAC) layer of a MAC PU before undergoing a hybrid automatic repeat request (HARQ) process for retransmission. Further, the ciphering process in the RLC is done on a packet data convergence protocol packet data unit (PDCP PDU).
    Type: Application
    Filed: June 11, 2014
    Publication date: October 2, 2014
    Applicant: InterDigital Technology Corporation
    Inventors: Mohammed Sammour, Shankar Somasundaram, Peter S. Wang, Rajat P. Mukherjee, Stephen E. Terry, Jin Wang
  • Publication number: 20140293933
    Abstract: A method and apparatus for uplink transmission is disclosed. A wireless transmit/receive unit (WTRU) transmits a message to a Node-B, wherein the message is selected from at least a first type, a second type, and a third type. The first type of message indicates that the WTRU has uplink buffered data to transmit and the WTRU requires uplink resources for transmission of uplink data. The second type of message includes a plurality of indications, wherein each indication indicates an amount of uplink buffered data associated with at least one logical channel, wherein each logical channel is associated with a priority. The third type of message indicates an amount of uplink buffered data and has less information than the second type of message.
    Type: Application
    Filed: June 16, 2014
    Publication date: October 2, 2014
    Applicant: InterDigital Technology Corporation
    Inventors: Guodong Zhang, Stephen E. Terry, Stephen G. Dick
  • Patent number: 8849283
    Abstract: A method and device may be used for selecting a network for initiating an emergency call. The network selection may be based on stored information and/or a network connection status. The stored information may include a network priority for placing the emergency call.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: September 30, 2014
    Assignee: InterDigital Technology Corporation
    Inventors: Marian Rudolf, Juan Carlos Zuniga, Shamim Akbar Rahman, Joseph A. Kwak
  • Publication number: 20140286231
    Abstract: Method and apparatus for receiving high speed downlink shared channel (HS-DSCH) transmissions are disclosed. An HS-DSCH medium access control (MAC-ehs) entity receives MAC-ehs protocol data units (PDUs) via a high speed downlink shared channel (HS-DSCH) while in one of Cell_FACH, Cell_PCH, and URA_PCH states. The reordering PDUs included in the MAC-ehs PDUs may be sent to a next processing entity without performing reordering of the PDUs. A certain reordering queue may enter a suspend state upon occurrence of a triggering event and MAC-ehs PDUs distributed to the reordering queue in the suspend state may be forwarded to the next processing entity without performing reordering. MAC-ehs reset procedure may be extended for a certain transmission such that the MAC-ehs reset is performed after receiving a MAC-ehs PDU in a target cell.
    Type: Application
    Filed: February 21, 2014
    Publication date: September 25, 2014
    Applicant: InterDigital Technology Corporation
    Inventors: Paul Marinier, Diana Pani, Christopher R. Cave, Rocco DiGirolamo, Stephen E. Terry
  • Publication number: 20140287791
    Abstract: A method and system for utilizing smart antennas in transmission of messages between nodes are disclosed. A wireless communication system includes a plurality of nodes, and each node is capable of being connected to each other node. At least a portion of the nodes are provided with a smart antenna configured to generate a plurality of directional beams. Each node maintains a list of other nodes and beam configuration information to be used in transmission of messages to other nodes. When a source node is required to transmit to a target node, the source node retrieves the beam configuration information and transmits with a directional beam directed to the target node.
    Type: Application
    Filed: June 6, 2014
    Publication date: September 25, 2014
    Applicant: InterDigital Technology Corporation
    Inventor: Fatih M. Ozluturk
  • Patent number: 8842644
    Abstract: A method of adaptive uplink/downlink timeslot assignment includes determining at least one of a potentially interfering cell which potentially interferes with a particular cell. A timeslot for uplink communication is eliminated, if a first one of the potentially interfering cells uses that timeslot for downlink communications. A timeslot for downlink communication is eliminated if a dynamic interference measurement in that timeslot as measured by most users exceeds a predetermined threshold and if a dynamic interference measurement in that timeslot does not exceed the predetermined threshold for most users but exceeds the predetermined threshold for at least one user. A timeslot is assigned to an uplink communication of the particular cell using non-uplink eliminated timeslots, and a timeslot is assigned to a downlink communication of the particular cell to each user using non-downlink eliminated timeslots with respect to that user.
    Type: Grant
    Filed: January 5, 2009
    Date of Patent: September 23, 2014
    Assignee: InterDigital Technology Corporation
    Inventors: Jung-Lin Pani, Ariela Zeira
  • Patent number: 8843743
    Abstract: A method for transmitting an encrypted signal to a wireless transmit/receive unit (WTRU) such that decryption of the encrypted signal depends on a trust zone associated with the WTRU is disclosed. The encryption may be performed using hierarchical modulation, scrambling, authentication, location validation, or a combination thereof. The size of a trust zone may also be adjusted.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: September 23, 2014
    Assignee: InterDigital Technology Corporation
    Inventors: Alexander Reznik, Alan Gerald Carlton, Alain Charles Louis Briancon, Yogendra Shah, Prabhakar R. Chitrapu
  • Patent number: 8843135
    Abstract: A method and apparatus for session continuity using pre-registration tunneling procedure are disclosed. For session continuity, a tunnel is established between a multi-mode wireless transmit/receive unit (WTRU) and a core network of a target system via a source system while the WTRU is still connected with the source system. An access procedure is performed toward the target system using the tunnel. A handover is the performed from the source system to the target system once the access procedure is complete. The access procedure includes session initiation protocol (SIP) registration, authentication of the WTRU at the target system, and internet protocol (IP) configuration. The handover may be from a third generation partnership project (3GPP) system to a non-3GPP system, or vice versa.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: September 23, 2014
    Assignee: InterDigital Technology Corporation
    Inventor: Kamel M. Shaheen
  • Patent number: 8843118
    Abstract: The present invention is related to a method and system for multi-cell coordination for multimedia broadcast multicast services (MBMS) in a wireless communication system. An MBMS multi-cell coordination unit is provided to coordinate a plurality of evolved Node-Bs (eNodeBs) for transmission of MBMS data synchronously in multiple cells of the same single frequency network (SFN). The MBMS multi-cell coordination unit may be located in an access gateway or in an eNodeB. An MBMS multi-cell scheduling scheme may be preconfigured for the eNodeBs for synchronization. Alternatively, the eNodeBs may be synchronized dynamically.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: September 23, 2014
    Assignee: InterDigital Technology Corporation
    Inventors: Guang Lu, Guodong Zhang, Arty Chandra
  • Publication number: 20140281781
    Abstract: A method and wireless transmit/receive unit (WTRU) for uplink data transmission is disclosed. Information indicating an allowed limit for uplink data transmission over an enhanced uplink channel is received. A hybrid automatic repeat request (H-ARQ) process to use for transmission of data over the enhanced uplink channel is identified. Data is selected for transmission over the enhanced uplink channel. A data transmission parameter is selected based on the received information indicating the allowed limit for uplink data transmission. The selected data is transmitted over the enhanced uplink channel using the identified H-ARQ process. An indication of the selected data transmission parameter is transmitted over an associated physical control channel.
    Type: Application
    Filed: May 30, 2014
    Publication date: September 18, 2014
    Applicant: InterDigital Technology Corporation
    Inventor: Stephen E. Terry
  • Patent number: 8830846
    Abstract: A method and system for improving responsiveness in exchanging management and control frames in a wireless local area network are disclosed. An initiator sends a frame (action, management, control or data frame) to a responder. Upon correctly receiving the frame, the responder sends a response frame to the initiator instead of directly sending an acknowledgement (ACK) packet. The responder preferably accesses the wireless medium to send the response frame in a short inter-frame spacing (SIFS). With this scheme, a long delay associated with having to contend for the wireless medium to send the response frame is avoided and therefore, the responsiveness and timeliness of the feedback mechanism is significantly enhanced. The response frame may be piggybacked on or aggregated with another packet.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: September 9, 2014
    Assignee: InterDigital Technology Corporation
    Inventors: Sudheer A. Grandhi, Arty Chandra, Eldad Zeira, Mohammed Sammour
  • Patent number: 8825098
    Abstract: A method and apparatus for providing multi-rate broadcast services in a wireless communication system are disclosed. The present invention takes advantage of the higher capacity of better channels by providing a certain data rate common to all users, while sending additional information to users with better channel conditions. A base station transmits a broadcast message including common information at a basic rate and additional information at a rate higher than the basic rate. The basic rate guarantees successful receipt by all WTRUs in a coverage area and the rate for the additional information is set such that only certain WTRUs with a channel condition above a threshold may decode the additional information successfully. The WTRU decodes the common information and subtracts the common information from received signals to decode the additional information. The additional information may be information supplementing the common information, such as video information.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: September 2, 2014
    Assignee: InterDigital Technology Corporation
    Inventor: Jin Wang
  • Patent number: 8824419
    Abstract: Systems, methods, and instrumentalities to provide transmission allocations. A Node-B may receive control information, which may include scheduling information, from a WTRU. The Node-B may determine a non-persistent grant allocation for the WTRU based at least in part on the control information. The non-persistent grant allocation may include a determined grant limit The determined grant limit may be a transmission of a pre-defined number of packet data units.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: September 2, 2014
    Assignee: Interdigital Technology Corporation
    Inventors: Paul Marinier, Alexander Reznik, Stephen E. Terry
  • Publication number: 20140243003
    Abstract: A method and apparatus for radio resource control (RRC) messaging. A method in a wireless communication system includes receiving, at a wireless transmit/receive unit (WTRU) an RRC change command including a plurality of commands from a Node B and receiving, at the Node B, an RRC change response from the WTRU, wherein the RRC change command includes a command for performing a measurement gap configuration procedure and a command for performing a measurement gap activation procedure.
    Type: Application
    Filed: March 28, 2014
    Publication date: August 28, 2014
    Applicant: InterDigital Technology Corporation
    Inventors: Shankar Somasundaram, Ulises Olvera-Hernandez
  • Patent number: 8819514
    Abstract: A method and apparatus may be used for supporting multiple hybrid automatic repeat request (H-ARQ) processes per transmission time interval (TTI). A transmitter and a receiver may include a plurality of H-ARQ processes. Each H-ARQ process may transmit and receive one TB per TTI. The transmitter may generate a plurality of TBs and assign each TB to a H-ARQ process. The transmitter may send control information for each TB, which may include H-ARQ information associated TBs with the TBs. The transmitter may send the TBs using the associated H-ARQ processes simultaneously per TTI. After receiving the TBs, the receiver may send feedback for each of the H-ARQ processes and associated TBs indicating successful or unsuccessful receipt of each of the TBs to the transmitter. The feedback for multiple TBs may be combined for the simultaneously transmitted H-ARQ processes, (i.e., TBs). When MIMO is implemented, one H-ARQ process may be associated with one MIMO stream, or codeword.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: August 26, 2014
    Assignee: InterDigital Technology Corporation
    Inventors: Stephen E. Terry, Robert L. Olesen, Jin Wang, Arty Chandra
  • Patent number: 8817741
    Abstract: A method and apparatus for resource management during handover operation includes initiating a handover from a first access network to a second access network. A policy update message is sent and a policy update confirmation message is received. A general packet radio service (GPRS) tunneling protocol (GTP) message and a radio access bearer (RAB) release message is sent and a GTP and RAB release acknowledgment is received. Connectivity is established for uplink and downlink transmission in the second access network.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: August 26, 2014
    Assignee: Interdigital Technology Corporation
    Inventor: Kamel M. Shaheen
  • Patent number: 8812048
    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 8, 2013
    Date of Patent: August 19, 2014
    Assignee: InterDigital Technology Corporation
    Inventors: Sung-Hyuk Shin, Zinan Lin, Donald M. Grieco, Robert L. Olesen
  • Patent number: 8805354
    Abstract: A method and apparatus for processing enhanced uplink data is disclosed. A request for uplink resources is transmitted, wherein the request for uplink resources is a request to transmit data over an enhanced dedicated channel (E-DCH). An uplink scheduling grant is received in response to the request for uplink resources. Data from medium access control for dedicated channel (MAC-d) flows is multiplexed into a medium access control for enhanced uplink (MAC-e) protocol data unit (PDU). A transport format combination (TFC) is selected for transmission of the MAC-e PDU. The MAC-e PDU is transmitted over the E-DCH using an identified hybrid automatic repeat request (H-ARQ) process. Feedback information is received in response to the transmitted MAC-e PDU. The MAC-e PDU is retransmitted using the identified H-ARQ process on a condition that the feedback information indicates a negative acknowledgment (NACK) of the MAC-e PDU transmission.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: August 12, 2014
    Assignee: InterDigital Technology Corporation
    Inventors: Stephen E. Terry, Guodong Zhang, Stephen G. Dick
  • Publication number: 20140219221
    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: Application
    Filed: April 9, 2014
    Publication date: August 7, 2014
    Applicant: InterDigital Technology Corporation
    Inventors: Stephen G. Dick, Marian Rudolf