Patents by Inventor Arty Chandra

Arty Chandra has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20150208416
    Abstract: A method and apparatus for selecting one of a plurality of multi-band access points (APs) to associate with a multi-band wireless transmit/receive unit (WTRU) are disclosed. The multi-band APs broadcast frequency band information regarding multiple frequency bands on which the multi-band AP is configured to operate. The multi-band WTRU selects a particular 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. If the multi-band WTRU receives frequency band information from the selected multi-band AP which indicates that a characteristic, (e.g., throughput, path loss, load, capacity, backhaul), of the selected frequency band is unacceptable, the multi-band WTRU determines whether to disassociate with the selected multi-band AP or to continue to associate with the selected multi-band AP via a different frequency band.
    Type: Application
    Filed: April 1, 2015
    Publication date: July 23, 2015
    Applicant: InterDigital Technology Corporation
    Inventor: Arty CHANDRA
  • Patent number: 9078279
    Abstract: A method and system for providing control information for supporting high speed downlink and high speed uplink packet access are disclosed. A Node-B assigns at least one downlink control channel and at least one uplink control channel to a wireless transmit/receive unit (WTRU). The downlink control channel and the uplink control channel are provided to carry control information for both the downlink and the uplink. Conventional control channels for downlink and uplink are combined into a reduced set of control channels for uplink and downlink. The Node-B and the WTRU communicate control information via the downlink control channel and the uplink control channel. The WTRU receives downlink data and transmits uplink data, and the Node-B receives uplink data and transmits downlink data based on the control information transmitted via the downlink control channel and the uplink control channel.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: July 7, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Arty Chandra, Stephen E. Terry
  • Patent number: 9066350
    Abstract: A method of discontinuous reception (DRX) in a wireless transmit receive unit (WTRU) includes the WTRU receiving DRX setting information over a radio resource control (RRC) signal, and the WTRU receiving DRX activation information over medium access control (MAC) signal.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: June 23, 2015
    Assignee: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Mohammed Sammour, Arty Chandra, Jin Wang, Shankar Somasundaram
  • Publication number: 20150162968
    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: Application
    Filed: February 18, 2015
    Publication date: June 11, 2015
    Applicant: InterDigital Technology Corporation
    Inventors: Ana Lucia A. Pinheiro, Arty Chandra, Inhyok Cha, Paul Marinier, Vincent Roy
  • Patent number: 9042290
    Abstract: A method and apparatus may be used for assigning groups of stations in wireless communications to one or more groups. Groups may be assigned by an access point (AP) based on information received from a station (STA). Group information may be signaled to each station and a group identifier may be indicated in a frame. The group information may be applied to a performance enhancement, for example power savings for the station, wherein the station enters a power saving mode on a condition that the station determines that it is not a member of the group.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: May 26, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Mohammed Sammour, Sudheer A. Grandhi, Arty Chandra
  • 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: 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: 8958793
    Abstract: A method and apparatus for managing common measurement gaps in multimedia broadcast multicast services (MBMS) cells are described. In one embodiment, a broadcast channel (BCH) common measurement gap is determined for use by a plurality of wireless transmit/receive units (WTRUs) in an MBMS cell. The BCH common measurement gap is assigned to the WTRUs, and the BCH common measurement gap is transmitted to the WTRUs. In another embodiment, a paging channel (PCH) common measurement gap is determined for use by a plurality of WTRUs in an MBMS cell. The PCH common measurement gap is assigned to the WTRUs, and the PCH common measurement gap is transmitted to the WTRUs.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: February 17, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Arty Chandra, Eldad M. Zeira, Guang Lu, Guodong Zhang, Stephen E. Terry
  • Publication number: 20150003429
    Abstract: A method and apparatus for selecting multiple transport formats and transmitting multiple transport blocks (TBs) in a transmission time interval simultaneously with multiple hybrid automatic repeat request (H-ARQ) processes in a wireless communication system are disclosed. Available physical resources and H-ARQ processes associated with the available physical resources are identified and channel quality of each of the available physical resources is determined. Quality of service (QoS) requirements of higher layer data to be transmitted are determined. The higher layer data is mapped to at least two H-ARQ processes. Physical transmission and H-ARQ configurations to support QoS requirements of the higher layer data mapped to each H-ARQ process are determined. TBs are generated from the mapped higher layer data in accordance with the physical transmission and H-ARQ configurations of each H-ARQ process, respectively. The TBs are transmitted via the H-ARQ processes simultaneously.
    Type: Application
    Filed: September 12, 2014
    Publication date: January 1, 2015
    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Stephen E. Terry, Jin Wang, Arty Chandra
  • Publication number: 20140369338
    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 frame, management frame, CSI frame, control frame, 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: Application
    Filed: September 4, 2014
    Publication date: December 18, 2014
    Applicant: InterDigital Technology Corporation
    Inventors: Sudheer A. Grandhi, Arty Chandra, Eldad M. Zeira, Mohammed Sammour
  • Publication number: 20140362759
    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: Application
    Filed: August 21, 2014
    Publication date: December 11, 2014
    Inventors: Guang LU, Arty CHANDRA, Guodong ZHANG
  • Publication number: 20140362833
    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).
    Type: Application
    Filed: August 25, 2014
    Publication date: December 11, 2014
    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Stephen E. Terry, Robert L. Olesen, Jin Wang, Arty Chandra
  • Patent number: 8886191
    Abstract: A method and system for performing handover in a third generation (3G) long term evolution (LTE) system are disclosed. A source evolved Node-B (eNode-B) makes a handover decision based on measurements and sends a handover request to a target eNode-B. The target eNode-B sends a handover response to the source eNode-B indicating that a handover should commence. The source eNode-B then sends a handover command to a wireless transmit/receive unit (WTRU). The handover command includes at least one of reconfiguration information, information regarding timing adjustment, relative timing difference between the source eNode-B and the target eNode-B, information regarding an initial scheduling procedure at the target eNode-B, and measurement information for the target eNode-B. The WTRU then accesses the target eNode-B and exchanges layer 1/2 signaling to perform downlink synchronization, timing adjustment, and uplink and downlink resource assignment based on information included in the handover command.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: November 11, 2014
    Assignee: InterDigital Technology Corporation
    Inventors: Jin Wang, Arty Chandra, Stephen E. Terry
  • 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
  • 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: 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
  • Publication number: 20140204827
    Abstract: A method and apparatus may be used to broadcast a first beacon and a second beacon in a beacon interval. The first beacon may include an indicator that indicates whether a second beacon will be transmitted within the beacon interval. The first beacon may be a legacy beacon and the second beacon may be a non-legacy beacon. A legacy beacon may be decodable by any station (STA) and a non-legacy beacon may be decodable only by non-legacy STAs.
    Type: Application
    Filed: January 23, 2014
    Publication date: July 24, 2014
    Applicant: InterDigital Technology Corporation
    Inventors: Sudheer A. Grandhi, Arty Chandra, Joseph S. Levy, Kamel M. Shaheen, Stephen E. Terry, Eldad Zeira
  • Patent number: 8780871
    Abstract: A method and apparatus are described for distributing beacon information. A first WTRU modifies a physical layer protocol data unit (PHY PDU) frame to include beacon information. The first WTRU transmits the modified PHY PDU frame to a second WTRU. The second WTRU receives the modified PHY PDU frame and extracts beacon information from the modified PHY PDU frame. The second WTRU associates with the first WTRU.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: July 15, 2014
    Assignee: InterDigital Technology Corporation
    Inventors: Sudheer A. Grandhi, Arty Chandra, Eldad M. Zeira, Joseph S. Levy
  • Patent number: 8750932
    Abstract: A method and apparatus for protecting high throughput (HT) stations (STAs) are disclosed. In one embodiment, a physical layer (PHY) legacy preamble transmitted by one STA is decoded by another STA that does not use a legacy preamble. In another embodiment, one STA is identified by another STA by using bits in the preamble of a packet to indicate which PHY type will be used in the remaining portion of the packet. In yet another embodiment, one STA sends ready-to-send (RTS)/clear-to-send (CTS) or CTS-to-self messages for reserving a medium in the presence of another STA of a different type than the one STA. In yet another embodiment, an access point (AP) transmits a beacon or an association message including a capability information element (IE) that indicates operation or support for a legacy preamble, HT STA preambles and a medium access control (MAC) packet transmission with HT protection mechanisms.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: June 10, 2014
    Assignee: InterDigital Technology Corporation
    Inventors: Eldad M. Zeira, Stephen E. Terry, Joseph S. Levy, Sudheer A. Grandhi, Arty Chandra
  • Publication number: 20140133380
    Abstract: A method and apparatus may be used for assigning groups of stations in wireless communications to one or more groups. Groups may be assigned by an access point (AP) based on information received from a station (STA). Group information may be signaled to each station and a group identifier may be indicated in a frame. The group information may be applied to a performance enhancement, for example power savings for the station, wherein the station enters a power saving mode on a condition that the station determines that it is not a member of the group.
    Type: Application
    Filed: January 23, 2014
    Publication date: May 15, 2014
    Applicant: InterDigital Technology Corporation
    Inventors: Mohammed Sammour, Sudheer A. Grandhi, Arty Chandra