Timing Advance Group Configuration
    41.
    发明申请

    公开(公告)号:US20190053183A1

    公开(公告)日:2019-02-14

    申请号:US16101064

    申请日:2018-08-10

    摘要: A base station distributed unit may determine that a first uplink timing advance value for a first cell of a wireless device is different than a second uplink timing advance value for a second cell of the wireless device. The first cell and the second cell may belong to a first timing advance group. The base station distributed unit may transmit a first message to a base station central unit in response to the determining. The first message may comprise one or more information elements indicating a reconfiguration of a timing advance group configuration for the wireless device. The base station distributed unit may receive a radio resource control message from the base station central unit based on the reconfiguration for the wireless device.

    Beam Refinement During RACH
    42.
    发明申请

    公开(公告)号:US20190052334A1

    公开(公告)日:2019-02-14

    申请号:US16101132

    申请日:2018-08-10

    摘要: A base station transmits to a wireless device, a first request to measure synchronization signal(s) of a first cell. The base station receives from the wireless device, measurement report(s) of at least one synchronization signal of the synchronization signal(s). The base station transmits to the wireless device, a second request to measure CSI-RS(s) of the first cell. The base station receives from the wireless device, second measurement report(s) of the CSI-RS(s). The second measurement report(s) are generated in response to the second request. The base station selects first CSI-RS(s) of the CSI-RS(s) based on the second measurement report(s). The base station transmits a downlink control information to the wireless device via one or more control channels. The downlink control information initiates a random access procedure of the first cell. The downlink control information comprises an indication of the first CSI-RS(s).

    Timers for control channel monitoring

    公开(公告)号:US11239956B2

    公开(公告)日:2022-02-01

    申请号:US16101321

    申请日:2018-08-10

    摘要: A wireless device receives message(s) comprising: a first value for an uplink hybrid automatic repeat request (HARQ) round-trip-time (RTT) timer; and a second value for an uplink discontinuous reception (DRX) retransmission timer. A transport block is transmitted via an uplink data channel. The uplink HARQ RTT timer is started with the first value in response to transmitting the transport block. The first value indicates a first number of symbols. The uplink DRX retransmission timer is started with the second value in response to the uplink HARQ RTT timer expiring. The second value indicates of a second number of slot lengths. A downlink control channel is monitored while the uplink DRX retransmission timer is running.

    Packet duplication transfer control

    公开(公告)号:US10764948B2

    公开(公告)日:2020-09-01

    申请号:US16146768

    申请日:2018-09-28

    摘要: A base station central unit receives message(s) for a wireless device from a second base station. The message(s) comprise a first aggregate maximum bit rate of the wireless device at the first base station. The message(s) comprise a PDCP packet duplication parameter indicating that a first packet flow comprises duplicated PDCP packets. The first base station receives the duplicated PDCP packets of the first packet flow from the second base station. The first base station transmits the duplicated PDCP packets to the wireless device. The first base station determines that a bit rate between the wireless device and the first base station exceeds the first aggregate maximum bit rate. The determining ignores, based on the PDCP packet duplication parameter, the duplicated PDCP packets. The first base station limits the bit rate between the wireless device and the first base station based on the determining.

    Packet duplication activation signaling

    公开(公告)号:US10764947B2

    公开(公告)日:2020-09-01

    申请号:US16146693

    申请日:2018-09-28

    摘要: A base station distributed unit receives information elements (IEs) from a base station central unit. The IEs comprise: at least one bearer configuration information element indicating that PDCP packet duplication is configured for at least one first bearer of a wireless device; and at least one information element indicating activation of the PDCP packet duplication of the at least one first bearer. The base station distributed unit transmits a medium access control control element indicating the activation of the PDCP packet duplication of the at least one first bearer to the wireless device in response to the at least one information element indicating the activation of the PDCP packet duplication. Based on the medium access control control element, the base station distributed unit receives: PDCP packets of the at least one first bearer; and duplicated PDCP packets of the at least one first bearer.