公开(公告)号：US11419036B2

公开(公告)日：2022-08-16

申请号：US16851461

申请日：2020-04-17

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： Kalpendu R. Pasad ,  Sung-Hyuk Shin ,  Mihaela C. Beluri ,  Marian Rudolf ,  Pascal M. Adjakple ,  John W. Haim

IPC: H04W40/22 ,  H04B7/155 ,  H04L5/00 ,  H04W72/04 ,  H04W88/04 ,  H04W84/04

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 abovementioned 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. Also described are methods and apparatus for optimizing signaling overheads by avoiding R-PCFICH and minimizing bits needs for resource allocation.

公开(公告)号：US11259204B2

公开(公告)日：2022-02-22

申请号：US14477247

申请日：2014-09-04

Applicant: InterDigital Technology Corporation

Inventor： Sudheer A Grandhi ,  Arty Chandra ,  Eldad M Zeira ,  Mohammed Sammour

IPC: H04W28/02 ,  H04L1/16 ,  H04L12/931 ,  H04W24/08 ,  H04L25/02 ,  H04L25/03 ,  H04W84/12

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.

公开(公告)号：US11258542B2

公开(公告)日：2022-02-22

申请号：US16786489

申请日：2020-02-10

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： Robert Lind Olesen ,  Eldad M. Zeira ,  Peter J. Voltz ,  Yongwen E. Yang ,  Qingyuan Dai ,  Chang-Soo Koo ,  I-Tai Lu ,  KunJu Tsai

IPC: H04W4/00 ,  H04L1/06 ,  H04B7/06 ,  H04L1/00 ,  H04L27/26 ,  H04B7/08 ,  H04B17/336 ,  H04B7/0456 ,  H04W84/12

Abstract: A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.

公开(公告)号：US11239901B2

公开(公告)日：2022-02-01

申请号：US16376748

申请日：2019-04-05

Applicant: InterDigital Technology Corporation

Inventor： Sana Sfar ,  Alexander Reznik ,  Prabhakar Chitrapu ,  Zinan Lin ,  Mohammed Sammour ,  Ana Lucia A. Pinheiro ,  Mihaela Beluri ,  Chunxuan Ye ,  Yogendra Shah ,  Gregg A. Charlton ,  Guodong Zhang ,  Khushali N. Manseta ,  Ruiyuan Hu

IPC: H04B7/155 ,  H04L5/00 ,  H04J11/00 ,  H04B7/026 ,  H04B7/26 ,  H04B7/08 ,  H04W72/14 ,  H04B7/06 ,  H04L29/08 ,  H04W28/02 ,  H04W4/38 ,  H04W16/26 ,  H04W84/04

Abstract: Methods and apparatus are described. A wireless transmit/receive unit (WTRU) includes a transceiver and a processor operatively coupled to the transceiver. The transceiver and the processor establish a connection with a first wireless network node and a second wireless network node. The transceiver and the processor also receive power configurations and timing advances from the first wireless network node independently of the second wireless network node. The transceiver and the processor also simultaneously receive downlink signals from both the first wireless network node and the second wireless network node. The downlink signals are independently scheduled by a scheduler of the first wireless network node and a scheduler of the second wireless network node.

公开(公告)号：US20220007284A1

公开(公告)日：2022-01-06

申请号：US17481569

申请日：2021-09-22

Applicant: InterDigital Technology Corporation

Inventor： Stephen E. Terry ,  Peter S. Wang ,  Jin Wang

IPC: H04W52/02 ,  H04W76/28

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.

公开(公告)号：US11172441B2

公开(公告)日：2021-11-09

申请号：US16256121

申请日：2019-01-24

Applicant: InterDigital Technology Corporation

Inventor： Stephen E. Terry ,  Peter S. Wang ,  Jin Wang

IPC: H04W4/00 ,  H04W52/02 ,  H04W76/28

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.

公开(公告)号：US11172337B2

公开(公告)日：2021-11-09

申请号：US16653515

申请日：2019-10-15

Applicant: InterDigital Technology Corporation

Inventor： Kamel M. Shaheen

IPC: H04W4/14 ,  H04L12/58 ,  H04L29/06 ,  H04W8/24 ,  H04L29/12 ,  H04W60/00 ,  H04W84/02 ,  H04W84/12

Abstract: A method performed by a UE may comprise transmitting capability information to an IMS. The capability information may indicate that the UE supports data transfer via IMS. The UE may transmit data and an XML message, based on capability. The XML message may describe the data transmitted. In some embodiments, the data may be binary data, for example, binary animation data. Other binary types may be supported.

公开(公告)号：US11057868B2

公开(公告)日：2021-07-06

申请号：US15075402

申请日：2016-03-21

Applicant: InterDigital Technology Corporation

Inventor： Marian Rudolf ,  Stephen G. Dick ,  Philip J. Pietraski

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/14 ,  H04W72/14 ,  H04L5/00 ,  H04W48/16

Abstract: A wireless transmit/receive unit (WTRU) receives radio resource assignment information over a physical downlink control channel. The WTRU determines whether the radio resource assignment information is intended for the WTRU based on WTRU identity-masked (ID-masked) cyclic redundancy check (CRC) bits. The WTRU determines whether the radio resource assignment information is for an uplink shared channel or a downlink shared channel. The WTRU utilizes the radio resource assignment information to transmit data over the uplink shared channel on a condition that the radio resource assignment information is determined to be for the uplink shared channel. The data is transmitted over the uplink shared channel a predetermined number of time slots after reception of the radio resource assignment information.

公开(公告)号：US11044728B2

公开(公告)日：2021-06-22

申请号：US16812768

申请日：2020-03-09

Applicant: InterDigital Technology Corporation

Inventor： Marian Rudolf ,  Vincent Roy

IPC: H04L12/18 ,  H04W4/06 ,  H04W52/50 ,  H04W72/04 ,  H04W52/36 ,  H04W52/46 ,  H04W52/18 ,  H04W84/18 ,  H04L27/26 ,  H04L1/00 ,  H04W52/14 ,  H04W52/54 ,  H04W74/00 ,  H04W84/12 ,  H04W52/24 ,  H04W52/28

Abstract: A method and apparatus for controlling transmit power in a wireless local area network (WLAN). For example, a station may receive, from an access point (AP), a beacon frame that includes a field indicating a maximum transmission power for at least one of a plurality of operational bandwidth that the AP supports. The station may determine a transmission power for a signal to be transmitted to the AP based on the at least one of the plurality of operational bandwidths indicated in the received beacon. The station may then transmit the signal at the determined transmission power.

公开(公告)号：US20210153119A1

公开(公告)日：2021-05-20

申请号：US17130291

申请日：2020-12-22

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： Mohammed Sammour ,  Sudheer A. Grandhi ,  Robert L. Olesen

IPC: H04W52/02 ,  H04J3/06 ,  H04W72/14 ,  H04W74/04 ,  H04W72/00 ,  H04W72/04

Abstract: A method and apparatus may be used in wireless communications. The apparatus may be an access point (AP), and may transmit a power save frame. The power save frame may include one or more Uplink (UL) Transmission Times (ULT)s. The apparatus may determine that a station (STA) did not transmit during its respective ULT. The AP may transmit another power save frame. The other power save frame may include a modified ULT. The modified ULT may be for a STA that did not transmit during its respective ULT. The other power save frame may include an unmodified ULT. The unmodified ULT may be for a STA that did not transmit.