公开(公告)号：US20240275624A1

公开(公告)日：2024-08-15

申请号：US18618664

申请日：2024-03-27

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Ravikumar V. Pragada ,  Saad Ahmad ,  Balaji Raghothaman ,  Samian J. Kaur ,  Pascal M. Adjakple ,  Ulises Olvera-Hernandez ,  Zhuorong Deng ,  Kiran K. Vanganuru ,  Gregory S. Sternberg ,  Guanzhou Wang ,  Michael F. Starsinic ,  Alexander Reznik ,  Juan Carlos Zuniga ,  Eldad M. Zeira

IPC: H04L12/14 ,  H04L67/104 ,  H04L67/1061 ,  H04L67/51 ,  H04L69/24 ,  H04M15/00 ,  H04W4/24 ,  H04W8/00 ,  H04W8/20 ,  H04W8/24 ,  H04W12/06 ,  H04W12/062 ,  H04W48/18 ,  H04W60/04 ,  H04W76/14 ,  H04W84/04

CPC classification number: H04L12/14 ,  H04L67/51 ,  H04L69/24 ,  H04M15/8033 ,  H04W4/24 ,  H04W8/005 ,  H04W12/06 ,  H04W12/062 ,  H04W48/18 ,  H04W76/14 ,  H04W84/042 ,  H04L67/104 ,  H04L67/1061 ,  H04W8/20 ,  H04W8/24 ,  H04W60/04

Abstract: A method and apparatus are described for supporting a two-stage device-to-device (D2D) discovery using a D2D interworking function (IWF). A D2D IWF component may be configured to perform mapping between an application running on an application server and a third generation partnership project (3GPP) network, and provide a set of application programming interfaces (APIs) to allow discovery to be provided as a service to D2D applications. An application identifier may be mapped to a 3GPP identifier. Further, a method and apparatus are described for performing client-server discovery. A first wireless transmit/receive unit (WTRU) may be configured for a listen-only operation, and a second WTRU may be configured to transmit beacons. The first and second WTRUs may perform a radio access network (RAN) discovery procedure at an access stratum (AS) layer. A method and apparatus for performing charging for D2D service using a D2D IWF are also described.

公开(公告)号：US11963237B2

公开(公告)日：2024-04-16

申请号：US17289143

申请日：2019-10-22

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Nagi Mahalingam ,  Anantharaman Balasubramanian ,  Ravikumar V. Pragada ,  Faris Alfarhan ,  Yugeswar Deenoo

IPC: H04W74/08 ,  H04W72/1263 ,  H04W74/0833

CPC classification number: H04W74/0841 ,  H04W72/1263 ,  H04W74/0866

Abstract: Method, apparatus and systems are disclosed. In one representative embodiment, a method may be implemented by a wireless transmit/receive unit (WTRU) for communication via a network access point (NAP). The method may include the WTRU receiving from the NAP a set of preambles and corresponding propagation delay related thresholds and determining propagation delay related information associated with a distance between the WTRU and the NAP or a location in a coverage of the NAP. The method may further include selecting a subset of preambles from the set of preambles based on the determined propagation delay related information, randomly selecting a preamble from the selected subset of preambles, and sending the randomly selected preamble to the NAP.

公开(公告)号：US20240090028A1

公开(公告)日：2024-03-14

申请号：US18508027

申请日：2023-11-13

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Anantharaman Balasubramanian ,  Ravikumar V. Pragada ,  Nagi Mahalingam

IPC: H04W74/08 ,  B64C39/02 ,  H04L1/1607 ,  H04L5/00 ,  H04W4/08 ,  H04W72/23

CPC classification number: H04W74/0808 ,  B64C39/024 ,  H04L1/1621 ,  H04L5/0055 ,  H04W4/08 ,  H04W72/23 ,  H04W92/18

Abstract: A wireless transmit/receive unit (WTRU) may receive a downlink communication from a network over a first interface transmitted to one or more WTRUs in a group of WTRUs. The WTRU may determine an access class of the WTRU based on a packet loss percentage of the downlink communication. The access class may be associated with a contention window for accessing a second interface. The WTRU may transmit packet loss information to the one or more WTRUs over the second interface in the contention window. The WTRU may receive packet loss feedback from the one or more WTRUs over the second interface. The WTRU may determine that the access class of the WTRU is a highest class of the one or more WTRUs. The WTRU may transmit a single groupcast negative acknowledgement (gNACK) to the network on behalf of the one or more WTRUs over the first interface.

公开(公告)号：US11903075B2

公开(公告)日：2024-02-13

申请号：US16872875

申请日：2020-05-12

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Ravikumar V. Pragada ,  Saad Ahmad ,  Balaji Raghothaman ,  Ulises Olvera-Hernandez ,  Zhuorong Deng ,  Pascal M. Adjakple ,  Gregory S. Sternberg ,  Guanzhou Wang ,  Alexander Reznik

IPC: H04W76/25 ,  H04W76/14 ,  H04W76/22 ,  H04W76/23 ,  H04W76/28 ,  H04W68/00

CPC classification number: H04W76/25 ,  H04W76/14 ,  H04W76/22 ,  H04W68/00 ,  H04W76/23 ,  H04W76/28

Abstract: A wireless transmit/receive unit (WTRU) may receive from a network resource allocation information for device to device (D2D) communication. The WTRU may select, from the received resource allocation information for a transmission time interval (TTI), resources for a D2D channel. The WTRU may transmit, with use of the selected resources, data directly to another WTRU.

公开(公告)号：US20240007969A1

公开(公告)日：2024-01-04

申请号：US18465476

申请日：2023-09-12

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Philip J. Pietraski ,  Rui Yang ,  Kai Li ,  Carl Wang ,  Tao Deng ,  Samian Kaur ,  Erdem Bala ,  Ravikumar V. Pragada

IPC: H04W52/34 ,  H04W52/14 ,  H04W52/32

CPC classification number: H04W52/346 ,  H04W52/146 ,  H04W52/325 ,  H04W52/30

Abstract: A wireless transmit/receive unit (WTRU) receives first timing advances and first power control commands from a first eNodeB and second timing advances and second power control commands from a second eNodeB and transmits, to the first eNodeB, a first physical uplink control channel using a first uplink component carrier. The first physical uplink control channel has a first timing adjusted by the first timing advances but not by the second timing advances and a first power level adjusted by the first power control commands but not by the second power control commands. The WTRU transmits a second physical uplink control channel using a second uplink component carrier. The second physical uplink control channel has a second timing adjusted by the second timing advances but not by the first timing advances and a second power level adjusted by the second power control commands but not by the first power control commands.

公开(公告)号：US11804891B2

公开(公告)日：2023-10-31

申请号：US17546467

申请日：2021-12-09

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Moon-il Lee ,  Yugeswar Deenoo ,  Tao Deng ,  Janet A. Stern-Berkowitz ,  Ravikumar V. Pragada ,  Mihaela C. Beluri

IPC: H04B7/08 ,  H04L5/00 ,  H04B7/06 ,  H04B7/0408 ,  H04B7/0417

CPC classification number: H04B7/088 ,  H04B7/0408 ,  H04B7/0417 ,  H04B7/0628 ,  H04B7/086 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0014

Abstract: A wireless transmit/receive unit (WTRU) is configured to receive an identifier of a beam. The WTRU is configured to measure a downlink quality associated with at least one beam. The WTRU is configured to determine whether the measured downlink quality is below a threshold value. The WTRU is configured to receive at least one control channel transmission using the beam of the identifier in response to a determination that the measured downlink quality is below the threshold value, wherein the beam used to receive the at least one control channel transmission is a same beam used to receive an associated data channel transmission.

公开(公告)号：US11178651B2

公开(公告)日：2021-11-16

申请号：US16495950

申请日：2018-03-23

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Anantharaman Balasubramanian ,  Ravikumar V. Pragada

IPC: H04W72/04 ,  H04L5/00 ,  H04W72/08 ,  G08G5/00

Abstract: Systems, methods, and instrumentalities are disclosed for active interference management. Active interference management may be provided for designated data regions and/or superzones. UAV-specific or other designated data regions (e.g., with data zones) may enable dynamic inter-cell interference management and high reliability command & control for UAVs in interference prone in environments. Data zone/region specific control channel search space may support inter-cell interference cancellation. Aggregation N levels (e.g., during EPDCCH encoding) may be dependent on an interference level of a zone. Data zone specific reference signals (DS-RS) may enable UAVs connected to neighboring cells to estimate an interference channel per zone. Interference management may be provided during semi-persistent scheduling (SPS) transmissions. Reliability of Physical Downlink Control Channel (PDCCH) may be enhanced (EPDCCH), e.g., with interference assistance signaling. Uplink interference management may operate with dedicated data region/zones. A downlink control information (DCI) format may be provided for UAVs.

公开(公告)号：US20210314112A1

公开(公告)日：2021-10-07

申请号：US17266298

申请日：2019-08-07

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Anantharaman Balasubramanian ,  Nagi Mahalingam ,  Ravikumar V. Pragada ,  Benoit Pelletier

IPC: H04L5/00

Abstract: Wireless transmit/receive units (WTRUs) may include unmanned aerial vehicles (UAVs). The WTRUs/UAVs may cooperate to exchange channel busy ratio (CBR) and/or CBR statistics of one or more (e.g., all) the carriers that the WTRUs/UAVs monitors with each other for carrier selection/carrier reselection. A network may provide one or more inputs on carrier selection. For example, a network may provide one or more inputs on carrier selection based on the congestion that the network infers (e.g., through the CBR measurements reported by the WTRUs/UAVs and/or through its own measurements). MAC/PHY layers may be configured to perform transmit adaptation during PDCP packet duplication. For example, the carrier aggregation capability of receivers may be considered to adapt the number of transmissions per carrier. Based on the carrier aggregation capability of the receivers, the number of transmissions at one or more (e.g., every) carriers may be optimized jointly across carriers.

公开(公告)号：US20190116470A1

公开(公告)日：2019-04-18

申请号：US16300307

申请日：2017-05-12

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Anantharaman Balasubramanian ,  Ravikumar V. Pragada

IPC: H04W4/06 ,  H04W4/08 ,  H04B7/185 ,  H04W72/00 ,  H04W4/40

CPC classification number: H04W4/06 ,  H04B7/18506 ,  H04W4/08 ,  H04W4/40 ,  H04W72/005 ,  H04W72/121

Abstract: Systems, methods, and instrumentalities are disclosed for processing a multi-level transmission sent on a common set of resources using superposition coding, comprising determining a first group radio network temporary identifier (GRNTI), wherein the GRNTI is associated with a broadcast transmission to a plurality of wireless transmit/receive units (WTRUs), determining a second GRNTI, wherein the second GRNTI is associated with a transmission to a subset of the plurality of WTRUs that received the first GRNTI, receiving the multi-level transmission, wherein the multi-level transmission comprises a first level message and a second level message, decoding the first level message from the multi-level transmission using the first GRNTI and preconfigured control information, and decoding the second level message from the multi-level transmission using the second GRNTI.

公开(公告)号：US10257687B2

公开(公告)日：2019-04-09

申请号：US15362295

申请日：2016-11-28

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Tao Deng ,  Ravikumar V. Pragada ,  Gregory S. Sternberg ,  Balaji Raghothaman ,  Zhuorong Deng ,  Kiran K. Vanganuru

IPC: H04W4/00 ,  H04W8/00 ,  H04W76/18 ,  H04W24/04 ,  H04W24/08 ,  H04W48/08 ,  H04W48/14 ,  H04W24/10 ,  H04W88/06

Abstract: A method and apparatus for neighbor discovery in a wireless communication system are disclosed. A neighbor seeking wireless transmit/receive unit (WTRU) may search for a first signal to discover neighbor WTRUs for peer-to-peer communication. The WTRU may then receive the first signal. Further, the WTRU may generate a report based on the received first signal. Then, the WTRU may send a second signal carrying the report to a cellular wireless network. The first signal may include a beacon for neighbor discovery or a synchronization signal or both. The report may contain at least one neighbor WTRU identity or at least a portion of a time value or both. Further, the report may contain a counter value, including at least a portion of a time value. The counter value may be based on a time source. In addition, the first signal may be received from a synchronization source.