Retransmissions over a sidelink unlicensed band

    公开(公告)号:US12256431B2

    公开(公告)日:2025-03-18

    申请号:US17646990

    申请日:2022-01-04

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may transmit, to a second UE, an initial transmission of a transport block via a sidelink unlicensed band. The UE may receive, from the second UE, a negative acknowledgement (NACK) based at least in part on the initial transmission of the transport block. The UE may transmit, to the second UE and based at least in part on the NACK and a retransmission reservation, a retransmission of the transport block via the sidelink unlicensed band in a retransmission occasion of a plurality of retransmission occasions associated with the retransmission reservation. Numerous other aspects are described.

    On demand assistance for sidelink mode 1 communication

    公开(公告)号:US12245234B2

    公开(公告)日:2025-03-04

    申请号:US17391952

    申请日:2021-08-02

    Abstract: Method and apparatus for on demand assistance for sidelink communication. The apparatus receives, from a base station, an AN configuration for one or more ANs associated with the base station. The apparatus transmits, to the base station, an AR to request assistance with communication with a second UE from at least one AN associated with the base station. The apparatus receives, from the base station, a grant to schedule sidelink transmission with the second UE. The sidelink transmission with the second UE is assisted by at least one AN of the one or more ANs associated with the base station. The apparatus communicates via sidelink communication with the second UE, via the at least one AN, using allocated resources of the grant from the base station.

    Protocol control for sidelink-based positioning

    公开(公告)号:US12167362B2

    公开(公告)日:2024-12-10

    申请号:US17559587

    申请日:2021-12-22

    Abstract: Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) may determine a set of one or more parameters for sidelink ranging sessions among session participants comprising a session initiator and at least one session responder, wherein the set of one or more parameters comprises: a first parameter indicating a first duration of time that a sidelink ranging session initiator allocates to receive, from a session responder, a response to a session request; and a second parameter indicating a second duration of time that a session responder allocates to receive a session confirmation from a session initiator after issuing, to the session initiator, a response to a session request. The UE may establish a sidelink ranging session according to the set of one or more parameters.

    Encryption key generation and verification techniques

    公开(公告)号:US12167234B2

    公开(公告)日:2024-12-10

    申请号:US17665203

    申请日:2022-02-04

    Abstract: Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may generate a first encryption key and a second UE may generate a second encryption key based on a measurement of a channel between the first UE and the second UE. The second UE may transmit, to the first UE, a sidelink message including a one-way digital signature generated using the second encryption key and a message from a defined set of messages. The first UE may generate a set of one-digital signatures using the first encryption key and the defined set of messages and determine whether the one-way digital signature matches one of the set of one-way digital signatures. If there is a match, the first UE and the second UE may communicate using the encryption keys. Otherwise, the first UE and the second UE may generate new encryption keys.

    SENSING OPERATION USING A MOBILE BASE STATION

    公开(公告)号:US20240406702A1

    公开(公告)日:2024-12-05

    申请号:US18326646

    申请日:2023-05-31

    Abstract: This disclosure provides systems, methods, and devices for wireless communication that support a sensing operation. In a first aspect, a network entity is configured to receive a report based on a sensing operation performed by a mobile base station and a user equipment (UE). In a second aspect, a mobile base station is configured to perform a sensing operation between the mobile base station and a UE. In a third aspect, a UE is configured to perform a sensing operation between the UE and a mobile base station. Other aspects and features are also claimed and described.

    Reservation based sidelink reference signal transmission for positioning

    公开(公告)号:US12155591B2

    公开(公告)日:2024-11-26

    申请号:US17339878

    申请日:2021-06-04

    Abstract: Methods, systems, and devices for wireless communications are described. A UE may determine a set of resources available for transmission of one or more reference signals (e.g., one or more PRSs) in a shared radio frequency spectrum band (e.g., an unlicensed radio frequency spectrum band) in a time interval for sidelink positioning. The UE may transmit, in a second radio frequency spectrum, a control message reserving the set of resources for the UE to transmit the one or more reference signals in the time interval for sidelink positioning. The UE may transmit the one or more reference signals on the set of resources based on transmitting the control message reserving the set of resources.

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