Uplink collision handling for wireless communications

    公开(公告)号:US11064514B2

    公开(公告)日:2021-07-13

    申请号:US16534612

    申请日:2019-08-07

    Abstract: Transmissions or channels may collide with one another. In the event of a collision, a first channel may be prioritized over a second channel and the second channel may be dropped. The described techniques and methods relate to prioritizing transmissions, based in part on service types, to mitigate increased latency and poor reliability. Accordingly, the described techniques may provide methods for prioritizing transmissions in the event of overlapping transmissions to decrease latency and improve reliability of transmissions for different service types.

    Frequency hopping in an uplink control channel

    公开(公告)号:US11057871B2

    公开(公告)日:2021-07-06

    申请号:US16045535

    申请日:2018-07-25

    Abstract: Methods, systems, and devices are described for wireless communications. A wireless device may receive an allocation of uplink resources for an uplink transmission of uplink control information (UCI) during a long physical uplink control channel (PUCCH), which may range from four to fourteen symbol periods in length. The wireless device may identify a frequency hopping location based on the length of the PUCCH and a number of bits used to represent the UCI. In some cases, the frequency hopping location partitions the long PUCCH into a first set of symbol periods and a second set of symbol periods. After identifying the frequency hopping location, the wireless device may transmit a UCI message, which may include information and reference symbols, over a first frequency bandwidth during the first set of symbol periods and over a second frequency bandwidth during the second set of symbol periods.

    Uplink control information piggybacking in wireless systems

    公开(公告)号:US11039465B2

    公开(公告)日:2021-06-15

    申请号:US16243958

    申请日:2019-01-09

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a downlink control message from a base station. The downlink control message may include a grant for communication with the base station and an indication of a component carrier (CC) to use for transmission of uplink control information (UCI). The UE may determine a CC for UCI transmission based at least in part on the CC indication, and the UE may transmit an uplink message including the UCI via the determined CC.

    WIRELESS DEVICE COOPERATIVE TRANSMISSION SCHEMES

    公开(公告)号:US20210135717A1

    公开(公告)日:2021-05-06

    申请号:US17075539

    申请日:2020-10-20

    Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for efficiently transmitting uplink signals to a base station using shared antennas. A first device may be in communications with a base station using local antennas and may identify a second device having auxiliary antennas available for transmitting uplink signals to the base station. Because the local antennas and auxiliary antennas may have different capabilities (e.g., due to different power or other constraints), the first device may generate first uplink signals for transmission using the local antennas differently from second uplink signals for transmission using the auxiliary antennas. The first device may transmit the first uplink signals to the base station using the local antennas and transmit the second uplink signals to the second device for transmission to the base station using the auxiliary antennas based on different configurations.

    TECHNIQUES FOR JOINT DYNAMIC HYBRID AUTOMATIC REPEAT REQUEST FOR MULTIPLE TRANSMISSION RECEPTION POINTS

    公开(公告)号:US20210092744A1

    公开(公告)日:2021-03-25

    申请号:US17017110

    申请日:2020-09-10

    Abstract: Techniques and device for wireless communications are described. A wireless device may establish multiple connections with multiple transmission reception points (TRPs). The wireless device may receive downlink control information (DCI) messages from the multiple transmission points and may generate joint hybrid automatic repeat request feedback (HARQ) based on the received downlink control information messages. To support joint HARQ feedback, counter indices may be jointly assigned to the DCI messages generated by the multiple transmission reception points. The method for jointly assigning the DCI messages may be selected based on a level of interference detected in a communications channel. Also, to support joint HARQ feedback, a total counter index in an uplink DCI message may be configured to indicate a total number of DCI message transmitted from a first TRP and a second TRP during a time period.

    Paired sounding reference signal transmissions in multi-transmission/reception point operation

    公开(公告)号:US10951283B2

    公开(公告)日:2021-03-16

    申请号:US16525343

    申请日:2019-07-29

    Abstract: Methods, systems, and devices for wireless communications are described. In some cases, a user equipment (UE) may use multiple antenna ports to communicate with multiple transmission/reception points (TRPs), and each antenna port may correspond to a spatial dimension along which wireless communications may be transmitted. The UE may transmit a first sounding reference signal (SRS) to a serving TRP to aid the serving TRP in determining a subset of spatial dimensions available to the UE along which to transmit downlink transmissions. Upon receiving a downlink transmission from the serving TRP along the subset of spatial dimensions as determined by the serving TRP, the UE may transmit a second SRS to a neighboring TRP to indicate the subset of spatial dimensions. The neighboring TRP avoid transmitting downlink transmissions to the UE or to other UEs along the subset of spatial dimensions, thereby mitigating interference along the subset of spatial dimensions.

    PUCCH RESOURCE CONFIGURATION IN TWO-STEP RACH

    公开(公告)号:US20210051727A1

    公开(公告)日:2021-02-18

    申请号:US16947662

    申请日:2020-08-11

    Abstract: Wireless communication devices, systems, and methods related to mechanisms to implement PUCCH resource configuration for two-step RACH for subsequent HARQ messaging. After a UE transmits msgA to a BS, the BS responds with msgB including a PUCCH resource indicator in a DCI of PDCCH, or a PUCCH resource indicator in PDSCH. The UE attempts to decode PDCCH or PDSCH, respectively. Upon decoding, the UE will use the configuration identified by the resource indicator. With the PUCCH resource configuration information, the UE signals a HARQ message.

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