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    CONTROLLING UE BEHAVIOR FOR CSI/SRS REPORTING DURING DRX
    21.
    发明申请
    CONTROLLING UE BEHAVIOR FOR CSI/SRS REPORTING DURING DRX 有权

    公开(公告)号：US20180048452A1

    公开(公告)日：2018-02-15

    申请号：US15798127

    申请日：2017-10-30

    Applicant: Sun Patent Trust

    Inventor： Joachim Loehr ,  Hidetoshi Suzuki ,  Prateek Basu Mallick

    IPC: H04L5/00 ,  H04W72/04 ,  H04W76/04

    CPC classification number: H04L5/0057 ,  H04L5/0051 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0446 ,  H04W76/28

    Abstract: The invention relates to a method for transmitting a periodic channel quality report (CSI) and/or a sounding reference symbol (SRS) from a UE to an eNodeB. To avoid double decoding at the eNodeB in transient phases, a deterministic behavior of the UE is defined by the invention, according to which the eNodeB can unambiguously determine whether the UE will transmit the CSI/SRS or not. According to one embodiment, the UL grants and/or DL assignments received until and including subframe N−4 only are considered; UL grants and/or DL assignments received by the UE after subframe N−4 are discarded for the determination. Additionally, DRX-related timers at subframe N−4 are considered for the determination. In a second embodiment, DRX MAC control elements from the eNodeB, instructing the UE to enter DRX, i.e., become Non-Active, are only considered for the determination if they are received before subframe N−4, i.e., until and including subframe N−(4+k).

    DEVICE TO DEVICE SYNCHRONIZATION SOURCE SELECTION
    22.
    发明申请
    DEVICE TO DEVICE SYNCHRONIZATION SOURCE SELECTION 审中-公开

    公开(公告)号：US20170086158A1

    公开(公告)日：2017-03-23

    申请号：US15309401

    申请日：2014-05-09

    Applicant: SUN PATENT TRUST

    Inventor： Sujuan Feng ,  Lilei Wang ,  Hidetoshi Suzuki ,  Prateek Basu Mallick

    IPC: H04W56/00

    CPC classification number: H04W56/0015 ,  H04B7/15507 ,  H04B17/309 ,  H04W56/0025

    Abstract: The present invention relates to selection of a synchronization source among various synchronization sources which include sources determining the synchronization signal from the network such as base stations (network nodes) or user equipments which receive the synchronization signal possibly over other hops from the base station, and which further includes sources which do not determine their synchronization signal from the network. The selection of the synchronization source is performed by choosing the source with the most reliable synchronization signal based on a metric calculated for each of the sources considered. In particular, the metric is based on the type of the source, number of hops between the network and the source and/or received signal quality. After selecting the source, the timing of the device is adapted accordingly.

    RESOURCE ALLOCATION FOR D2D DISCOVERY TRANSMISSION
    23.
    发明申请
    RESOURCE ALLOCATION FOR D2D DISCOVERY TRANSMISSION 审中-公开
    D2D发现传输的资源分配

    公开(公告)号：US20170064534A1

    公开(公告)日：2017-03-02

    申请号：US15308331

    申请日：2015-02-25

    Applicant: SUN PATENT TRUST

    Inventor： Joachim Loehr ,  Prateek Basu Mallick

    IPC: H04W8/00 ,  H04W72/12 ,  H04W72/04

    CPC classification number: H04W8/005 ,  H04L67/16 ,  H04W72/04 ,  H04W72/0413 ,  H04W72/1268 ,  H04W76/14

    Abstract: The present invention relates to transmitting user equipment for transmitting data to a receiving user equipment over a direct link connection in a communication system. The transmitting user equipment is adapted to request resources for discovery transmission in the communication system and comprises a generating unit configured to generate a resource request message for allocation of resources for discovery transmission. The resource request message includes information on the amount of data to be transmitted and on discovery indication. The transmitting user equipment may further include a transmitting unit configured to transmit to a base station the generated resource request message, and a receiving unit adapted to receive from the base station a resource configuration message allocating the requested resources for discovery transmission.

    Abstract translation: 本发明涉及在通信系统中通过直接链路连接发送用于向接收用户设备发送数据的用户设备。 所述发送用户设备适于在所述通信系统中请求用于发现传输的资源，并且包括：生成单元，被配置为生成资源请求消息以分配用于发现传输的资源。 资源请求消息包括关于要发送的数据量和发现指示的信息。 发送用户设备还可以包括：发送单元，被配置为向基站发送所生成的资源请求消息;以及接收单元，适于从基站接收分配所请求的资源用于发现传输的资源配置消息。

    DEVICE-TO-DEVICE WIRELESS COMMUNICATION METHOD AND USER EQUIPMENT
    24.
    发明申请
    DEVICE-TO-DEVICE WIRELESS COMMUNICATION METHOD AND USER EQUIPMENT 有权

    公开(公告)号：US20250098016A1

    公开(公告)日：2025-03-20

    申请号：US18972518

    申请日：2024-12-06

    Applicant: Sun Patent Trust

    Inventor： Lilei Wang ,  Prateek Basu Mallick ,  Hidetoshi Suzuki ,  Joachim Loehr ,  Masayuki Hoshino

    IPC: H04W76/23 ,  H04W36/00 ,  H04W72/02 ,  H04W72/56

    Abstract: Provided are D2D wireless communication methods and UEs therefor. In one embodiment, the D2D wireless communication method performed by a UE includes continuing D2D transmission by using a resource from a resource pool allocated for mode 2 operation when switching from mode 1 operation to mode 2 operation. In another embodiment, the D2D wireless communication method performed by a UE includes performing D2D transmission by using a resource from a resource pool allocated for mode 2 operation, wherein the resource pool is indicated by a dedicated RRC signaling transmitted by an eNB, a SIB transmitted by an eNB, a PD2DSCH transmitted by other UE(s), and/or pre-configuration, and the dedicated RRC signaling, the SIB, the PD2DSCH and the pre-configuration are in descending order in priority when determining the resource pool.

    SCHEDULING REQUEST PROCEDURE FOR D2D COMMUNICATION
    25.
    发明申请
    SCHEDULING REQUEST PROCEDURE FOR D2D COMMUNICATION 有权

    公开(公告)号：US20250071766A1

    公开(公告)日：2025-02-27

    申请号：US18940505

    申请日：2024-11-07

    Applicant: Sun Patent Trust

    Inventor： Joachim Loehr ,  Prateek Basu Mallick

    IPC: H04W72/21 ,  H04W72/543 ,  H04W76/14

    Abstract: The present invention relates to a D2D capable a communication method and to a transmitting user equipment, which transmits data to a receiving user equipment over a direct link data channel, uses the services of the eNodeB in order to have resources allocated for transmitting said data. To this end the UE sends to the eNB scheduling information using resources of a subframe dedicated for standard uplink communication through the eNodeB, rather than using resources on the subframe dedicated to D2D data transmission. In order to allow the eNB to distinguish whether the received scheduling request is for allocating resources for transmitting data over the direct link channel or over the eNB, UE may send along with the scheduling information also identification information associated to the scheduling information.

    SECURITY KEY DERIVATION IN DUAL CONNECTIVITY
    29.
    发明公开
    SECURITY KEY DERIVATION IN DUAL CONNECTIVITY 审中-公开

    公开(公告)号：US20230379357A1

    公开(公告)日：2023-11-23

    申请号：US18365609

    申请日：2023-08-04

    Applicant: Sun Patent Trust

    Inventor： Prateek Basu Mallick ,  Joachim Loehr

    IPC: H04L9/40 ,  H04W12/04 ,  H04W76/19 ,  H04W76/15 ,  H04W12/082

    CPC classification number: H04L63/1441 ,  H04L63/06 ,  H04W12/04 ,  H04L63/068 ,  H04W76/19 ,  H04W76/15 ,  H04W12/082 ,  H04L63/1416 ,  H04L2463/061

    Abstract: The disclosure relates to methods for establishing a secure communication link between a mobile station and a secondary base station in a mobile communication system. The disclosure is also providing mobile communication system for performing these methods, and computer readable media the instructions of which cause the mobile communication system to perform the methods described herein. Specifically, the disclosure suggests that in response to the detected or signaled potential security breach, the master base station increments a freshness counter for re-initializing the communication between the mobile station and the secondary base station; and the mobile station and the secondary base station re-initialize the communication there between. The re-initialization is performed under the control of the master base station and further includes deriving a same security key based on said incremented freshness counter, and establishing the secure communication link utilizing the same, derived security key.

    Device to device synchronization source selection
    30.
    发明授权
    Device to device synchronization source selection 有权

    公开(公告)号：US11800471B2

    公开(公告)日：2023-10-24

    申请号：US17114123

    申请日：2020-12-07

    Applicant: Sun Patent Trust

    Inventor： Sujuan Feng ,  Lilei Wang ,  Hidetoshi Suzuki ,  Prateek Basu Mallick

    IPC: H04W56/00 ,  H04B7/155 ,  H04B17/309

    CPC classification number: H04W56/0015 ,  H04W56/0025 ,  H04B7/15507 ,  H04B17/309

    Abstract: The present invention relates to selection of synchronization source among various synchronization sources which include sources determining the synchronization signal from the network such as base stations (network nodes) or user equipments which receive the synchronization signal possibly over other hops from the base station, and which further includes sources which do not determine their synchronization signal from the network. The selection of the synchronization source is performed by choosing the source with the most reliable synchronization signal based on a metric calculated for each of the sources considered. In particular, the metric is based on the type of the source, number of hops between the network and the source and/or received signal quality. After selecting the source, the timing of the device is adapted accordingly.

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