Patents Assigned to InterDigital Technology
  • Wireless communication method and system for routing packets via intra-mesh and extra-mesh routes
    Patent number: 8498287
    Abstract: A method and apparatus for routing a packet implemented in a mesh point (MP) of a wireless network are described. According to the method, a plurality of intra-mesh and extra-mesh routes are compared. One of the plurality of intra-mesh and extra-mesh routes is selected for transmission of the packet based on at least one criterion. The packet is transmitted over the selected one of the plurality of intra-mesh and extra-mesh routes.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: July 30, 2013
    Assignee: InterDigital Technology Corporation
    Inventors: Vincent Roy, Juan Carlos Zuniga
  • Centralized radio network controller
    Patent number: 8498668
    Abstract: In a radio access network, novel systems and methods reduce processing delay, and improve integration with IP networks, by separating user data from connection management and control data at a Node B or at a base station. The user data are routed to an IP (Internet Protocol) switch, whereas the connection management and control data are routed to a centralized radio network controller (RNC). Pursuant to a second embodiment of the invention, a centralized RNC provides improved radio resource management (RRM) functionality by handing all connection management and control data for a plurality of Node B's, thereby simplifying the switching of user data throughout the radio access network. Pursuant to a third embodiment of the invention, a smart IP switch is equipped to switch user data without core network (CN) involvement. Downlink user data are switched independently of uplink user data.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: July 30, 2013
    Assignee: InterDigital Technology Corporation
    Inventors: Stephen E. Terry, James M. Miller
  • System for permitting control of the purging of a Node B by the serving radio network controller
    Patent number: 8493865
    Abstract: A system and method which permit the RNC to control purging of data buffered in the Node B. The RNC monitors for a triggering event, which initiates the purging process. The RNC then informs the Node B of the need to purge data by transmitting a purge command, which prompts the Node B to delete at least a portion of buffered data. The purge command can include instructions for the Node B to purge all data for a particular UE, data in one or several user priority transmission queues or in one or more logical channels in the Node B, depending upon the particular data purge triggering event realized in the RNC.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: July 23, 2013
    Assignee: InterDigital Technology Corporation
    Inventors: Stephen E. Terry, Yi-Ju Chao, James M. Miller
  • Pre-phase error correction
    Patent number: 8488650
    Abstract: A CDMA communication system includes a signal processor which encodes voice and nonvoice signals into data at various rates, e.g. data rates of 8 kbps, 16 kbps, 32 kbps, or 64 kbps as I and Q signals. The signal processor selects a specific data rate depending upon the type of signal, or in response to a set data rate. When the signal is received and demodulated, the baseband signal is at the chip level. Both the I and Q components of the signal are despread using the conjugate of the pn sequence used during spreading, returning the signal to the symbol level. Carrier offset correction is performed at the symbol level. A lower overall processing speed is therefore required.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: July 16, 2013
    Assignee: InterDigital Technology Corporation
    Inventor: John D. Kaewell
  • Wireless communication method and apparatus for transferring buffered enhanced uplink data from a mobile station to a node-B
    Patent number: 8488457
    Abstract: A wireless communication method and apparatus for transferring buffered enhanced uplink (EU) data from a wireless transmit/receive unit (WTRU), i.e., a mobile station, to a Node-B. The EU data is generated and stored in a buffer of the WTRU. The WTRU transmits a message to the Node-B including a request for a desired transport format combination (TFC) or data traffic indicator. The Node-B schedules one or more allowed EU data transmissions between the WTRU and the Node-B by transmitting an EU data scheduling message to the WTRU. The WTRU transmits all of the EU data stored in the buffer to the Node-B if the allowed EU data transmissions are sufficient to support transmission of all of the EU data stored in the buffer. Otherwise, the WTRU transmits a portion of the EU data along with the desired TFC or detailed traffic volume measurement (TVM) information to the Node-B.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: July 16, 2013
    Assignee: InterDigital Technology Corporation
    Inventors: Guodong Zhang, Stephen E. Terry, Stephen G. Dick
  • Wireless communication system with selectively sized data transport blocks
    Patent number: 8488579
    Abstract: A wireless transmit receive unit and methods for code division multiple access telecommunications are disclosed that process data in a physical layer and a medium access control (MAC) layer. The physical and MAC layers communicate data between each other via transport channels. The transport channels are associated with logical channels. Logical-channel data for the transport channels is provided in data units having a bit size evenly divisible by an integer N. The respective logical channels associated with a transport channel utilize MAC headers that have a selected modulo N bit size such that there is bit alignment of the MAC headers of all the logical channels associated with a particular transport channel.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: July 16, 2013
    Assignee: InterDigital Technology Corporation
    Inventor: Stephen E. Terry
  • Backoff mechanism in random access channel
    Patent number: 8483740
    Abstract: A method to determine a back-off adjustment and transmission power adjustment in a wireless transmit/receive unit (WTRU), the method including determining a problem in signal reception and adjusting a back-off and a transmission power based on a plurality of measurement results. The measurement results include common pilot channel received signal code power, received signal strength indicator and uplink interference.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: July 9, 2013
    Assignee: Interdigital Technology Corporation
    Inventors: Shankar Somasundaram, Ana Lucia Pinheiro, Charles A. Dennean, Stephen E. Terry
  • Method and apparatus for antenna mapping selection in MIMO-OFDM wireless networks
    Patent number: 8483200
    Abstract: A method and apparatus for selecting an antenna mapping in multiple-in/multiple-out (MIMO) enabled wireless communication networks. A candidate set of currently available antenna mappings is determined based upon measured long term channel conditions. An antenna mapping is selected from the candidate set, and the mapping is calibrated with a selected antenna mapping of a receiving wireless transmit/receive unit (WTRU). When the selected mappings are calibrated, packet data transmission begins. In an alternative embodiment, a calibration training frame (CTF) is used to calibrate multiple antenna mappings simultaneously or sequentially. Also disclosed are physical layer and medium access control layer frame formats for implementing antenna mapping selection according to the invention.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: July 9, 2013
    Assignee: Interdigital Technology Corporation
    Inventors: Inhyok Cha, Eldad Zeira, Keith Richard Baldwin
  • Apparatus and methods for determination of gain factors communication transmission power
    Patent number: 8483082
    Abstract: Apparatus and methods for wireless communication transmission power control are provided. Determination of gain factors and adjustments for physical channel reconfiguration in the context of transmission power control are addressed. Preferably, implementation is in conjunction with communication systems in which wireless communications are conducted between wireless transmit receive units (WTRUs) using multiple channels that are concurrently transmitted.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: July 9, 2013
    Assignee: InterDigital Technology Corporation
    Inventors: Ana Lucia Iacono, John M. McNally, Charles A. Dennean, Janet A. Stern-Berkowitz
  • Wireless communication method and apparatus for selecting between transmission of short-version and full-version uplink scheduling requests
    Patent number: 8477695
    Abstract: In a wireless communication system including a wireless transmit/receive unit (WTRU) and a Node-B, an uplink (UL) scheduling request is transmitted by the WTRU to the Node-B when the WTRU has buffered (user) data to transmit to the Node-B, but needs to have a scheduling grant for UL data transmission. The WTRU determines whether to transmit to the Node-B a short-version UL scheduling request or a full-version UL scheduling request, whereby the short-version UL scheduling request uses less channel resources than the full-version UL scheduling request by omitting information pertaining to WTRU status parameters. The short-version UL scheduling request is a one-bit indicator or a multi-bit indicator that indicates an amount of scheduling grants or resources requested. The full-version UL scheduling request includes at least one of a WTRU buffer status and a WTRU link budget.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: July 2, 2013
    Assignee: InterDigital Technology Corporation
    Inventor: Guodong Zhang
  • Precoded pilot transmission for multi-user and single user MIMO communications
    Patent number: 8477863
    Abstract: The disclosed method and apparatus include an WTRU-specific reference signal scheme that provides efficient precoded pilot transmission and effective channel estimation using dedicated pilot signals. The disclosed methods are efficient for both a single user (SU) and a multi user (MU) Multiple Input Multiple Output (MIMO) system.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: July 2, 2013
    Assignee: InterDigital Technology Corporation
    Inventors: Kyle Jung-Lin Pan, Allan Yingming Tsai
  • Method and apparatus for base station self-configuration
    Patent number: 8478343
    Abstract: Disclosed is method and apparatus for operation of a base station in wireless communications, including self-configuration of the base station for secure and authenticated communications with other base stations.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: July 2, 2013
    Assignee: InterDigital Technology Corporation
    Inventors: Peter S. Wang, Louis J. Guccione, James M. Miller, Ulises Olvera-Hernandez
  • METHOD AND APPARATUS FOR MEASURING INTERFERENCE IN WIRELESS STATIONS
    Publication number: 20130165054
    Abstract: A method for use in a station of measuring radio frequency (RF) interference is presented. An average noise power indicator of the STA (STA_ANPI) is determined. A rate of change of the STA_ANPI is monitored to determine an RF interference metric. The RF interference metric is transmitted to another network entity, whereby the another network entity is enabled to perform load balancing based on the RF interference metric.
    Type: Application
    Filed: February 22, 2013
    Publication date: June 27, 2013
    Applicant: InterDigital Technology Corporation
    Inventor: InterDigital Technology Corporation
  • METHOD AND APPARATUS OF ENABLING MULTI BAND TRANSMISSION
    Publication number: 20130163578
    Abstract: A method and apparatus for enabling multi-band transmission includes receiving a beacon on a first radio band and receiving the beacon on a second radio band. The beacon includes synchronization information for transmission on the first and second radio bands.
    Type: Application
    Filed: February 22, 2013
    Publication date: June 27, 2013
    Applicant: InterDigital Technology Corporation
    Inventor: InterDigital Technology Corporation
  • Balancing paging load and tracking area updates
    Patent number: 8472956
    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: March 7, 2008
    Date of Patent: June 25, 2013
    Assignee: InterDigital Technology Corporation
    Inventors: Peter S. Wang, Rajat P. Mukherjee, Jin Wang, Shankar Somasundaram, James M. Miller, Ulises Olvera-Hernandez
  • Power control in orthogonal sub-channels in wireless communications
    Patent number: 8467408
    Abstract: A method and apparatus for power control in a wireless communication involves establishing at least two orthogonal sub-channels within a channel for communication and controlling transmitted power in each sub-channel independently.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: June 18, 2013
    Assignee: InterDigital Technology Corporation
    Inventors: Prabhakar R. Chitrapu, Behrouz Aghili, Stephen G. Dick
  • RRC MESSAGES AND PROCEDURES
    Publication number: 20130150064
    Abstract: A method and apparatus for radio resource control (RRC) messaging. A method in a Node B includes transmitting a RRC change command including a plurality of commands to a wireless transmit/receive unit (WTRU), and receiving 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: February 11, 2013
    Publication date: June 13, 2013
    Applicant: InterDigital Technology Corporation
    Inventor: InterDigital Technology Corporation
  • Base station having a set of phased array antennas
    Patent number: 8462876
    Abstract: A wireless communications handset configured to receive a multipath spread spectrum signal comprises a first antenna and a second antenna. A first receiver is coupled to the first antenna and a second receiver is coupled to the second antenna. A delay device is coupled to the first receiver and delays the portion of the multipath signal received by the first antenna. The delayed signal and the in-phase portion of the signal are then combined in a combining device. A despreader coupled to the combining devices generates a magnitude value of the combined signal. The current magnitude value is then compared to one or more previous magnitude values to determine if the delay should be increased or decreased. A comparison device outputs a comparison signal based on the current and previous magnitude values and provides the comparison signal to the delay device to adjust the delay appropriately.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: June 11, 2013
    Assignee: InterDigital Technology Corporation
    Inventor: Donald L. Schilling
  • Method and apparatus for selecting link adaptation parameters for CDMA-based wireless communication systems
    Patent number: 8462738
    Abstract: A method and apparatus for selecting a transport format resource combination (TFRC) using an information theoretic approach are provided. The TFRC may be selected in a medium access control (MAC) layer for transmission of data in a code division multiple access (CDMA) wireless communication system. The maximum number of spreading codes available for transmission and the set of possible TFRCs may be determined based on channel characteristics. For each transport block set size (TBSS) in the set of possible TFRCs, a TFRC is selected with the largest number of spreading codes within the maximum number of spreading codes for a corresponding minimum coding rate. The corresponding code rate for each selected TFRCs is compared to a threshold to select a corresponding type of modulation. One of the selected TFRCs is selected to be provided to the physical layer that best matches the CQI and maximizes the TBSS.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: June 11, 2013
    Assignee: InterDigital Technology Corporation
    Inventor: Philip J. Pietraski
  • Method and apparatus for dynamically allocating H-ARQ processes
    Patent number: 8462717
    Abstract: A method and apparatus for supporting enhanced uplink (EU) transmissions, implemented in a wireless transmit/receive unit (WTRU), is disclosed. The WTRU provides hybrid automatic repeat request (H-ARQ) processes for supporting transmission over an enhanced dedicated channel (E-DCH), wherein at least one H-ARQ process is reserved for a dedicated channel medium access control channel (MAC-d) flow. The WTRU receives H-ARQ information, wherein the information indicates H-ARQ processes for which transmission of data from the MAC-d flow is allowed. For each transmission time interval (TTI), the WTRU allocates an H-ARQ process for use by the MAC-d flow, from the allowed H-ARQ processes. The WTRU transmits data from the MAC-d flow over the E-DCH using the allocated H-ARQ process.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: June 11, 2013
    Assignee: InterDigital Technology Corporation
    Inventor: Stephen E. Terry