Enhanced sidelink (SL) control signaling with time division duplexing (TDD)

    公开(公告)号:US11589338B2

    公开(公告)日:2023-02-21

    申请号:US17152437

    申请日:2021-01-19

    Abstract: Certain aspects of the present disclosure provide techniques for enhanced sidelink (SL) control signaling with time division duplexing (TDD). A method that may be performed by a first user equipment (UE) may include receiving a TDD configuration indicating resources of a resource pool available for SL transmissions between the first UE and at least a second UE and exchanging SL communications with the second UE in one or more slots or symbols based, at least in part, on the TDD configuration. The TDD configuration may define one or more of the slots or symbols as flexible slots or symbols that may be configured as downlink (DL) or uplink (UL) slots or symbols. The TDD configuration may also identify one or more of the slots or symbols as UL slots or symbols and one or more slots or symbols as DL slots or symbols.

    TRANSMIT POWER CONTROL FOR SIDELINK GROUPS

    公开(公告)号:US20230035625A1

    公开(公告)日:2023-02-02

    申请号:US17391437

    申请日:2021-08-02

    Abstract: This disclosure provides systems, methods, and devices for wireless communication that support controlling transmit power of one or more groups of user equipment (UE) sidelinks using a single sidelink control transmission of group transmit power control (TPC) information. A first UE may transmit group TPC information to one or more groups of UEs, such as by including the group TPC information in sidelink control information (SCI). The group TPC information may include a group TPC indicator and one or more TPC messages for providing one or more group TPC commands with respect to groups of sidelinks. The group TPC commands may provide for power control with respect to a respective group of UEs for one or more channels. Other aspects and features are also claimed and described.

    Techniques for search space based channel sensing in sidelink

    公开(公告)号:US11570659B2

    公开(公告)日:2023-01-31

    申请号:US17127673

    申请日:2020-12-18

    Abstract: Aspects of the present disclosure provide techniques for search space channel sensing in sidelink communication between one or more sensors/actuators (SAs) and programmable logic controller (PLC) in internet of things (IoT) applications. Particularly, the techniques described herein configure a search space (e.g., subset of all available sub-channels/resources) for transmission and reception of sidelink packets (e.g., physical sidelink control channel (PSCCH) and physical sidelink shared channel (PSSCH)) between the PLC from the one or more SAs. Thus, in some instances, the UE may perform congestion control metrics for a one or more search spaces in which the UE may transmit sidelink communications. The congestion control metrics that may be limited to the search space may preserve UE resources that would otherwise need to be expended to perform channel sensing on an entire resource pool prior to initiating sidelink communication.

    Dynamic padding field to match downlink and uplink downlink control information length

    公开(公告)号:US11540262B2

    公开(公告)日:2022-12-27

    申请号:US16929562

    申请日:2020-07-15

    Abstract: Aspects of the disclosure relate to communication systems, apparatus and methods which enable or support transmitting/receiving downlink control information (DCI) carrying a downlink grant or an uplink grant. A method includes detecting a reference length based on an effective length of a downlink (DL) grant DCI and an effective length of an uplink (UL) grant DCI and calculating a length difference based on the effective DL grant DCI length and the effective UL grant DCI length. A length of a padding field in the DL grant DCI and/or the UL grant DCI is set equal to the calculated length difference such that the lengths of the DL grant DCI and UL grant DCI are both equal to the reference length. Padding bits are inserted in the padding field of the DL grant DCI and/or the UL grant DCI. Thereafter, the DL grant DCI and/or the UL grant DCI is encoded and transmitted to a scheduled entity.

    TIME-SENSITIVE NETWORKING SUPPORT OVER SIDELINK

    公开(公告)号:US20220377684A1

    公开(公告)日:2022-11-24

    申请号:US17323981

    申请日:2021-05-18

    Abstract: Methods, systems, and devices for wireless communications are described. A first device node, such as an end station or a user equipment (UE) associated with the end station, may receive, from a controller node of a time-sensitive network (TSN), a configuration for communicating over the TSN. The TSN may include a plurality of nodes that are synchronized according to a common synchronization configuration and that are configured for transmitting messages between the controller node and the first device node within a latency threshold condition configured for the TSN. The first device node may identifying data to transmit to a second device node of the plurality of nodes and may communicating with the second device node via a sidelink connection associated with the wireless radio access network.

    CONFIGURED CHASE-COMBINING RECEPTION FOR NEW RADIO (NR) SIDELINK MODE 1

    公开(公告)号:US20220361216A1

    公开(公告)日:2022-11-10

    申请号:US17308714

    申请日:2021-05-05

    Abstract: This disclosure provides systems, methods, and devices for wireless communication that support configured reception with sidelink control information (SCI) repetition over a sidelink. In aspects, a receiving user equipment (UE) may be configured to conduct combined reception/decoding of SCI repetitions (received from a transmitting UE over a sidelink) over multiple time-frequency slots at pre-defined occasions (e.g., occasions configured by a base station) to decode a sidelink transmission. In aspects, a receiving UE may receive from a transmitting UE over a sidelink, a sidelink transmission during a reception occasion that includes a plurality of reception opportunities for the receiving UE. Each reception opportunity of the plurality of reception opportunities includes a repetition of an SCI. The receiving UE decodes the SCI by combining the repetitions of the SCI received in one or more reception opportunities, and decodes a data transmission (e.g., a physical sidelink shared channel (PSSCH) transmission) using the decoded SCI.

    TECHNIQUES FOR SIDELINK CONTROL SIGNALING

    公开(公告)号:US20220225297A1

    公开(公告)日:2022-07-14

    申请号:US17148341

    申请日:2021-01-13

    Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device may be configured to receive, from a second wireless device via a sidelink communication link, a sidelink control information (SCI) scheduling an uplink transmission from the first wireless device to the second wireless device. The first wireless device may then generate the uplink transmission based on the SCI. The first wireless device may then transit the uplink transmission to the second wireless device via the sidelink communication link in accordance with the SCI.

    CONFIGURATION FOR REQUESTING SEMI-PERSISTENTLY SCHEDULED RESOURCES

    公开(公告)号:US20220159638A1

    公开(公告)日:2022-05-19

    申请号:US16951937

    申请日:2020-11-18

    Abstract: Methods, systems, and devices for wireless communications at a device are described. The device may receive an indication of a configuration that schedules semi-persistently scheduled resources for transmissions from the first device. The device may also receive an indication of a set of resources available to the first device for requesting a set of the semi-persistently scheduled resources configured for the first device. The device may transmit a message over the set of resources to request the set of semi-persistently scheduled resources.

    TECHNIQUES FOR INDICATING A CONFIGURATION USING A RESOURCE ALLOCATION INDICATION

    公开(公告)号:US20220116929A1

    公开(公告)日:2022-04-14

    申请号:US17495473

    申请日:2021-10-06

    Abstract: Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may be configured to transmit a first sidelink control information (SCI) message associated with a first sidelink transmission from the first UE, the first SCI including a first indication of a first set of resources reserved for retransmissions of the first sidelink transmission at one or more retransmission occasions. The UE may identify a second SCI message associated with the first SCI message, the second SCI message including frequency domain resource allocation (FDRA) field values indicative of a second set of resources reserved for retransmissions of a second sidelink transmission, where the second SCI provides a release of at least some of the reserved resources. Additional aspects of signaling one or more configurations via resource indication fields are described.

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