Physical downlink control channel (PDCCH) repetition and decoding for ultra-reliability low latency communication (URLLC)

    公开(公告)号:US10980051B2

    公开(公告)日:2021-04-13

    申请号:US16250377

    申请日:2019-01-17

    Abstract: Certain aspects of the present disclosure relate generally to wireless communications systems, and more particularly, to soft combining of control information. For example, certain aspects provide a method for wireless communication. The method generally includes monitoring for control information in each of a plurality of physical downlink control channel (PDCCHs) during a different one of a plurality of time intervals, wherein the PDCCHs contain the same control information that indicates a resource allocation within a respective one of the time intervals for receiving one of a plurality of physical downlink shared channels (PDSCHs), wherein data in each of the plurality of PDSCHs is the same. In certain aspects, the method also includes soft-combining the plurality of PDCCHs to decode the control information, and decoding the control information based on the soft-combination of the plurality of PDCCHs.

    MULTIPLEXING UPLINK CONTROL INFORMATION ON UPLINK SHARED CHANNEL TRANSMISSIONS

    公开(公告)号:US20210068140A1

    公开(公告)日:2021-03-04

    申请号:US17001326

    申请日:2020-08-24

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an uplink grant that schedules uplink shared channel transmissions of a first length. The UE may then determine the actual lengths of the transmissions, which may differ from each other and the scheduled length (e.g., due to conditions of the communication environment, such as the location of slot boundaries). The UE may also identify uplink control information to be multiplexed on the uplink shared channel (e.g., when the scheduled transmission overlaps with a control channel or based on an uplink grant for the uplink control information). The UE may multiplex the uplink control information on the uplink shared channel so as to maintain the same rate-matching scheme and the same coding scheme for each of the transmissions, and transmit the uplink control information in at least one of the transmissions.

    MULTIPLE CONFIGURATIONS WITH OVERLAPPING OCCASIONS

    公开(公告)号:US20210068105A1

    公开(公告)日:2021-03-04

    申请号:US16943518

    申请日:2020-07-30

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify an overlap in time between at least a first occasion and a second occasion in a slot. In some cases, the first occasion may be semi-persistently scheduled for the UE according to a first configuration associated with a first priority level, and the second occasion may be semi-persistently scheduled for the UE according to a second configuration associated with a second priority level. The UE may apply, based on the identified overlap, a conflict resolution rule to the first occasion and the second occasion based on the first priority level for the first occasion and the second priority level for the second occasion, communicate in the slot using the first occasion, and refrain from communicating in the slot using the second occasion based on applying the conflict resolution rule.

    PDCCH monitoring span determination
    126.
    发明授权

    公开(公告)号:US10939427B2

    公开(公告)日:2021-03-02

    申请号:US16803700

    申请日:2020-02-27

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a base station, information identifying one or more control channel monitoring span capabilities. The UE may receive, from the base station, information identifying a plurality of control channel monitoring occasions. The UE may generate a bitmap based at least in part on the plurality of control channel monitoring occasions. The UE may determine, in accordance with the bitmap and based at least in part on the information identifying the one or more control channel monitoring span capabilities, a span pattern indicating one or more locations of one or more spans in a slot. Numerous other aspects are provided.

    ACKNOWLEDGMENT FEEDBACK FOR MULTIPLE ACTIVE DOWNLINK SEMI-PERSISTENT SCHEDULING CONFIGURATIONS

    公开(公告)号:US20200374089A1

    公开(公告)日:2020-11-26

    申请号:US16880226

    申请日:2020-05-21

    Abstract: Methods, systems, and devices for wireless communications are described. A base station may configure uplink resources within a slot to enable a user equipment (UE) to transmit an acknowledgment (ACK) feedback message for multiple downlink semi-persistent scheduling (SPS) configurations. For example, the base station may transmit an additional configuration to the UE that indicates uplink resources that the UE can use to transmit acknowledgment feedbacks for multiple downlink messages received according to the SPS configurations, where the UE determines which uplink resource to use based on a number of acknowledgment information bits to be transmitted for the acknowledgment feedback message. For example, if the number of acknowledgment information bits is below a threshold value, the UE may use a first uplink resource configured by the base station. Alternatively, if the number of acknowledgment information bits is above the threshold value, the UE may use a second uplink resource.

    HANDLING COLLISIONS BETWEEN UPLINK DATA REPETITIONS AND AN UPLINK CONTROL TRANSMISSION

    公开(公告)号:US20200329486A1

    公开(公告)日:2020-10-15

    申请号:US16842336

    申请日:2020-04-07

    Abstract: This disclosure describes methods, devices, and systems for techniques related to wireless communications, and more particularly uplink transmissions on one or more of a physical uplink shared channel (PUSCH) and a physical uplink control channel (PUCCH). Generally, the described techniques support handling collisions between PUSCH repetitions and a PUCCH transmission. A user equipment (UE) may identify that uplink control information (UCI) is scheduled for transmission via an uplink control transmission that overlaps with multiple repetitions of an uplink data transmission. The UE may determine, for each of the multiple repetitions, a quantity of resources available for carrying multiplexed uplink control information, generate encoded UCI by encoding the UCI based on the quantity of resources available in each of the multiple repetitions, and multiplex the encoded UCI on at least a portion of the multiple repetitions based on the quantity of resources available in each of the multiple repetitions.

    UPLINK COLLISION HANDLING
    129.
    发明申请

    公开(公告)号:US20200314900A1

    公开(公告)日:2020-10-01

    申请号:US16805514

    申请日:2020-02-28

    Abstract: Methods, systems, and devices are described for handling transmissions or channels in wireless communications that collide with one another. The described techniques relate to handling the collision between multiple overlapping channels (e.g., two or more channels of the same priority). For example, a collision resolution configuration may include resolving the collisions among the channels of the same priority first (e.g., feedback information transmissions first, and then control information), among the channels of the same service type first (e.g., normal channels first, and then low latency channel(s)), or across all of the channels of all priorities at once. Collisions may be resolved by dropping or rescheduling overlapping information from the lower priority transmission(s) or channel(s) in consideration of the higher priority transmission(s) or channel(s), or by multiplexing or piggybacking overlapping information from a first priority transmission(s) or channel(s) with a second priority transmission(s) or channel(s).

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