HIGHER LAYER ASSISTED RESOURCE CONFIGURATION FOR SIDELINK CONFIGURED GRANT TRANSMISSION

    公开(公告)号:US20200322939A1

    公开(公告)日:2020-10-08

    申请号:US16834237

    申请日:2020-03-30

    IPC分类号: H04W72/04 H04W72/02

    摘要: Systems and methods for sidelink configuration are provided. A transmitting user equipment (UE) transmits configuration parameters relating to a sidelink transmission between the UE and a second UE via higher-layer signalling and then transmits the sidelink transmission to the second UE. The higher layer signalling is a layer above the sidelink transmission. The parameters may include feedback channel parameters or parameters for sidelink reference signal transmission by the second UE. The parameters may be selected by the transmitting UE, or they may be received initially from the network. The parameters may be part of a sidelink configured grant configuration (SL CG) signalled to the second UE. The sidelink transmission may be a configured-grant transmission to the second UE according to the SL CG configuration. The higher layer signalling may be PC5 signalling or RRC signaling.

    DEVICES AND METHODS OF SIGNALING FOR RESOURCE SELECTION AND RESERVATION IN SIDELINK TRANSMISSION

    公开(公告)号:US20210105104A1

    公开(公告)日:2021-04-08

    申请号:US17027885

    申请日:2020-09-22

    IPC分类号: H04L1/18 H04L5/00 H04W72/04

    摘要: A first user equipment (UE) is configured to receive from a base station a signaling comprising indication of one or more time-frequency resources and an indicator indicating a time gap, and transmit a transport block (TB) to a second UE using the one or more time-frequency resources. For each of the time-frequency resources, the first UE monitors a hybrid automatic repeat request (HARQ) feedback from the second UE, using a physical sidelink feedback channel (PSFCH) resource; and transmits to the base station a HARQ feedback report signal based on the HARQ feedback or absence thereof, in a physical uplink control channel (PUCCH), using a single PUCCH resource determined based on the time gap from a last one of the PSFCH resources.

    HARQ FEEDBACK AND RETRANSMISSION MECHANISM FOR SIDELINK TRANSMISSION

    公开(公告)号:US20200322100A1

    公开(公告)日:2020-10-08

    申请号:US16841823

    申请日:2020-04-07

    IPC分类号: H04L1/18 H04W72/04

    摘要: Systems and methods for early termination of feedback in respect of sidelink transmissions are provided. A first UE transmits at least one sidelink (SL) transmission of a first set of SL transmissions to a second UE, the first set of SL transmissions comprising an initial SL transmission and a set number of SL retransmissions. If no ACK is received, then the first UE transmits the set number of retransmissions. On the other hand, if an ACK is received, then the first UE transmits fewer than the set number of SL retransmissions when an ACK is received from the second UE before the set number of SL retransmissions has been completed. By transmitting fewer than all of the set number of SL retransmissions, resources can be freed up for other purposes. The approach may be used for SL configured grant transmission.

    METHODS AND APPARATUS FOR SIDELINK COMMUNICATIONS AND RESOURCE ALLOCATION

    公开(公告)号:US20210282174A1

    公开(公告)日:2021-09-09

    申请号:US17326756

    申请日:2021-05-21

    IPC分类号: H04W72/14 H04W4/40 H04W72/12

    摘要: A user equipment (UE) receives a message that indicates a sidelink (SL) communication resource configuration to be used by the UE for communicating SL control information and SL data between the UE and another UE. The UE transmits SL control information according to the SL communication resource configuration, and transmits SL data according to the SL communication resource configuration. The SL control information and the SL data are transmitted by the UE without the UE receiving, in a downlink control information (DCI), a grant of communication resources.

    METHODS AND APPARATUS FOR SIDELINK COMMUNICATIONS AND RESOURCE ALLOCATION

    公开(公告)号:US20190342910A1

    公开(公告)日:2019-11-07

    申请号:US16392827

    申请日:2019-04-24

    IPC分类号: H04W72/14 H04W72/12 H04W4/40

    摘要: A user equipment (UE) receives a message that indicates a sidelink (SL) communication resource configuration to be used by the UE for communicating SL control information and SL data between the UE and another UE. The UE transmits SL control information according to the SL communication resource configuration, and transmits SL data according to the SL communication resource configuration. The SL control information and the SL data are transmitted by the UE without the UE receiving, in a downlink control information (DCI), a grant of communication resources.

    TRANSMISSION PATTERN INDICATION AND SELECTION FOR SIDELINK GRANT FREE TRANSMISSION

    公开(公告)号:US20200229173A1

    公开(公告)日:2020-07-16

    申请号:US16737170

    申请日:2020-01-08

    摘要: With sidelink reservation signals sent together with the sidelink data, there is the possibility of interference with other sidelink signals. In order to address this, systems and methods are provided in which a first UE transmits a reservation signal to indicate at least one time-frequency resource for transmitting sidelink data. Following this, the first UE transmits at least one sidelink data transmission to a second UE using the at least one time-frequency resource indicated by the reservation signal. The reservation signal is transmitted before the at least one sidelink data transmission signal so that a third UE may detect the reservation signal and use the reservation signal to avoid using the at least one time-frequency resource indicated in the reservation signal.