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21.发明申请公开(公告)号：US20150142986A1
公开(公告)日：2015-05-21
申请号：US14397443
申请日：2013-04-27
Applicant: InterDigital Patent Holdings, Inc.
Inventor： Alexander Reznik , Yogendra C. Shah , Eldad M. Zeira , Ravikumar V. Pragada , Balaji Raghothaman , Kiran K. Vanganuru , Gregory S. Sternberg , Vinod Kumar Choyi , Xavier De Foy
IPC: H04L29/08
CPC classification number: H04L67/141 , H04L63/08 , H04L63/20 , H04L67/142 , H04L67/16 , H04L69/24 , H04W12/08
Abstract: Systems and methods for enabling proximity services to be delivered as part of an application service and/or for providing tailored services and/or a differential quality of service (QoS) to a flow may be disclosed. For example, a temporary service name between an application and a server such as a D2D server may be established such that a UE and/or network may execute such a service at a later time without later involvement by the application and/or without exchanging credentials for the application with the network and vice versa.
Abstract translation: 可以公开用于使邻近服务作为应用服务的一部分和/或用于向流提供定制服务和/或差分服务质量（QoS））的系统和方法。 例如，可以建立应用程序和诸如D2D服务器的服务器之间的临时服务名称，使得UE和/或网络可以在稍后的时间执行这样的服务，而不再由应用程序参与和/或不交换凭据 用于与网络的应用程序，反之亦然。
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公开(公告)号：US20130322277A1
公开(公告)日：2013-12-05
申请号：US13906193
申请日：2013-05-30
Applicant: INTERDIGITAL PATENT HOLDINGS, INC
Inventor： Kiran K. Vanganuru , Hongsan Sheng , Gregory S. Sternberg , Tao Deng , Balaji Raghothaman , Ravikumar V. Pragada , Zhuorong Deng , Steven Ferrante , Paul Marinier , Benoit Pelletier , Diana Pani
IPC: H04W24/08
CPC classification number: H04W24/08 , H04L1/20 , H04L5/0007 , H04L5/0051
Abstract: Disclosed herein are measurement and interference avoidance for direct device-to-device (D2D) links. A method may be implemented by a wireless transmit/receive unit (WTRU). The method may include determining a sounding reference signal (SRS) to detect high interference and facilitate measurements on a link with another WTRU. The method may also include using the SRS on a direct link with another WTRU.
Abstract translation: 这里公开了直接设备到设备（D2D）链路的测量和干扰避免。 无线发射/接收单元（WTRU）可以实现一种方法。 该方法可以包括确定探测参考信号（SRS）以检测高干扰并促进对与另一WTRU的链路的测量。 该方法还可以包括在与另一WTRU的直接链路上使用SRS。
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公开(公告)号：US20130287012A1
公开(公告)日：2013-10-31
申请号：US13871837
申请日：2013-04-26
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: H04W76/04
Abstract: A method and apparatus are described for maintaining communications over a bearer when at least one of two wireless transmit/receive units (WTRUs) transition to idle mode. In one case, a direct WTRU-to-WTRU bearer may be released in response to a first one of the WTRUs transitioning to idle mode. A second one of the WTRUs may send a first of a plurality of packets to the first WTRU via a default packet data network (PDN) connection or a default bearer towards the PDN connection. The first packet may have a destination Internet protocol (IP) address of the second WTRU and trigger paging to the first WTRU. The first WTRU may transition to connected mode in response to the paging. Other cases may release a portion of a bearer, rather than the entire bearer. A method and apparatus for initiating proximity service bearer establishment is also described.
Abstract translation: 描述了当两个无线发射/接收单元（WTRU）中的至少一个转换到空闲模式时，通过承载来维持通信的方法和装置。 在一种情况下，可以响应于转换到空闲模式的第一个WTRU来释放直接WTRU到WTRU的承载。 第二个WTRU可以经由默认分组数据网络（PDN）连接或向PDN连接的默认承载来向第一WTRU发送多个分组中的第一个分组。 第一分组可以具有第二WTRU的目的地因特网协议（IP）地址并且触发对第一WTRU的寻呼。 响应于寻呼，第一WTRU可以转换到连接模式。 其他情况可能会释放承载的一部分，而不是整个承载。 还描述了用于发起邻近服务承载建立的方法和装置。
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24.发明申请公开(公告)号：US20250088964A1
公开(公告)日：2025-03-13
申请号：US18958456
申请日：2024-11-25
Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
Inventor： Hussain E. Elkotby , Ravikumar V. Pragada , Tanbir Haque , Patrick Cabrol , Anantharaman Balasubramanian , Marian Rudolf , William E. Lawton
IPC: H04W52/02
Abstract: A method for use in a Wireless Transmit/Receive Unit (WTRU). The method comprises: receiving, using an active receiver, system information comprising a first system information set, wherein the first system information set is currently valid for the WTRU; storing the system information; deactivating the active receiver and activating a passive receiver; determining whether a difference between a first parameter in the BSSI and a first parameter in the first system information set is greater than a threshold value, wherein on a condition that the difference is greater than the threshold value, reactivating the active receiver to receive a second system information set as a currently valid system information set for the WTRU.
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公开(公告)号：US12192937B2
公开(公告)日：2025-01-07
申请号：US17044586
申请日：2019-04-03
Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
Inventor： Nagi Mahalingam , Anantharaman Balasubramanian , Mihaela Beluri , Ravikumar V. Pragada , Mahmoud Taherzadeh Boroujeni , Shahrokh Nayeb Nazar , Seyed Mohsen Hosseinian , Frank La Sita
IPC: H04W56/00 , H04B7/185 , H04W74/08 , H04W74/0833
Abstract: Methods, systems, and devices for addressing timing advance (TA) in non-terrestrial network communication is disclosed herein. A wireless transmit and receive unit (WTRU) may receive system information from a base station attached to an airborne or spaceborne vehicle that indicates a physical random access channel (PRACH) resource. The WTRU may determine a timing offset based on a plurality of information, such as the location information and the system information. The WTRU may transmit a preamble using the timing offset via the PRACH resource. The base station may receive the preamble and send a random access response (RAR) that includes, for example, a TA command. The WTRU may receive the RAR including the TA command and combine the timing offset with the TA command to determine an actual TA, after which the WTRU may use the actual TA for uplink transmissions.
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Patent Agency Ranking
公开(公告)号：US12119918B2
公开(公告)日：2024-10-15
申请号：US18466121
申请日：2023-09-13
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 , H04B7/0408 , H04B7/0417 , H04B7/06 , H04L5/00
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) may be configured to measure a downlink quality associated with at least one first beam. The WTRU may be configured to determine whether the measured downlink quality associated with the at least one first beam is below a threshold value. The WTRU may be configured to receive at least one control channel transmission using a determined second beam, based on, in part, a determination that the measured downlink quality associated with the at least one first beam is below the threshold value. The determined second beam used to receive the at least one control channel transmission may be a same beam that is used to receive an associated data channel transmission. The determined second beam may be from a set of beams. The set of beams may be received via higher layer signaling.
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公开(公告)号：US20240276510A1
公开(公告)日：2024-08-15
申请号：US18643772
申请日：2024-04-23
Applicant: InterDigital Patent Holdings, Inc.
Inventor： Yugeswar Deeno , Tao Deng , Kyle Jung-Lin Pan , Moon-il Lee , Ravikumar V. Pragada , Janet A. Stern-Berkowitz , Mihaela C. Beluri
IPC: H04W72/23 , H04L5/00 , H04W72/044
CPC classification number: H04W72/23 , H04L5/0048 , H04L5/0053 , H04W72/046 , H04L5/0007 , H04L5/0069
Abstract: Transmit and/or receive beamforming may be applied to the control channel transmission/reception, e.g., in mmW access link system design. Techniques to identify candidate control channel beams and/or their location in the subframe structure may provide for efficient WTRU operation. A framework for beam formed control channel design may support varying capabilities of mBs and/or WTRUs, and/or may support time and/or spatial domain multiplexing of control channel beams. For a multi-beam system, modifications to reference signal design may discover, identify, measure, and/or decode a control channel beam. Techniques may mitigate inter-beam interference. WTRU monitoring may consider beam search space, perhaps in addition to time and/or frequency search space. Enhancements to downlink control channel may support scheduling narrow data beams. Scheduling techniques may achieve high resource utilization, e.g., perhaps when large bandwidths are available and/or WTRUs may be spatially distributed.
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公开(公告)号：US11997696B2
公开(公告)日：2024-05-28
申请号：US18108528
申请日：2023-02-10
Applicant: InterDigital Patent Holdings, Inc.
Inventor： Yugeswar Deenoo , Tao Deng , Kyle Jung-Lin Pan , Moon-il Lee , Ravikumar V. Pragada , Janet A. Stern-Berkowitz , Mihaela C. Beluri
IPC: H04W72/044 , H04L5/00 , H04W72/23
CPC classification number: H04W72/23 , H04L5/0048 , H04L5/0053 , H04W72/046 , H04L5/0007 , H04L5/0069
Abstract: Transmit and/or receive beamforming may be applied to the control channel transmission/reception, e.g., in mmW access link system design. Techniques to identify candidate control channel beams and/or their location in the subframe structure may provide for efficient WTRU operation. A framework for beam formed control channel design may support varying capabilities of mBs and/or WTRUs, and/or may support time and/or spatial domain multiplexing of control channel beams. For a multi-beam system, modifications to reference signal design may discover, identify, measure, and/or decode a control channel beam. Techniques may mitigate inter-beam interference. WTRU monitoring may consider beam search space, perhaps in addition to time and/or frequency search space. Enhancements to downlink control channel may support scheduling narrow data beams. Scheduling techniques may achieve high resource utilization, e.g., perhaps when large bandwidths are available and/or WTRUs may be spatially distributed.
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公开(公告)号：US11956725B2
公开(公告)日：2024-04-09
申请号：US17962863
申请日：2022-10-10
Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
Inventor： Tanbir Haque , Ravikumar V. Pragada , Anantharaman Balasubramanian , Alpaslan Demir
CPC classification number: H04W52/0229 , H04W52/0216 , H04W52/0235 , H04W76/28
Abstract: A wireless transmit/receive unit (WTRU) may include one or more antennas and a first transceiver operatively coupled to the antennas. The one or more antennas and the first transceiver may be configured to receive a first signal from a network using zero energy from the WTRU. The one or more antennas and the first transceiver may be further configured to extract energy from the first signal. The first transceiver may be further configured to examine a separation between energy threshold events to decode an energy signature of the first signal. The first transceiver may be further configured to activate a second transceiver operatively coupled to the one or more antennas if the decoded energy signature matches a stored energy signature, wherein the second transceiver is powered by the WTRU. The one or more antennas and the second transceiver may be configured to receive a second signal from the network.
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公开(公告)号：US11848811B2
公开(公告)日：2023-12-19
申请号：US17746680
申请日：2022-05-17
Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
Inventor： Tao Deng , Steven Ferrante , Ravikumar V. Pragada , Yugeswar Deenoo , Daniel R. Cohen , Janet A. Stern-Berkowitz , Moon-il Lee , Mihaela C. Beluri
CPC classification number: H04L27/2673 , H04B7/0695 , H04B7/088 , H04W48/12 , H04W48/16 , H04W56/001 , H04B7/0617 , H04L27/2666
Abstract: A method performed by a base station may include transmitting a configuration message including at least information indicating a subset of a plurality of transmit beams to be used for transmitting a set of synchronization signals. The set of synchronization signals including a primary synchronization signal and a secondary synchronization signal may be transmitted. A random access channel (RACH) transmission may be received using a receive beam associated with one of the subset of the plurality of transmit beams used by the base station to transmit the set of synchronization signals. The transmitted set of synchronization signals transmitted may have a signal quality above a signal quality threshold. A reference signal may be transmitted along with a physical broadcast channel (PBCH) transmission. The reference signal may have a sequence derived from a beam index associated with the one of the subset of the plurality of transmit beams.
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