Beam Failure Recovery Procedure
    81.
    发明申请

    公开(公告)号:US20190207667A1

    公开(公告)日:2019-07-04

    申请号:US16240030

    申请日:2019-01-04

    摘要: A wireless device initiates a beam failure recovery procedure in response to detecting a first number of beam failure instances. A beam failure recovery timer is started with a first timer value. A first reference signal is selected in response to an expiry of the beam failure recovery timer. A first preamble associated with the first reference signal is transmitted. A downlink control channel for a downlink control information is monitored during a response window and in response to transmitting the first preamble. A preamble transmission counter is incremented, from a value of the preamble transmission counter before the expiry of the beam failure recovery timer, in response to not receiving the downlink control information during the response window. A second preamble for the beam failure recovery procedure is transmitted in response to the preamble transmission counter indicating a second number equal to or less than a third number for preamble transmissions.

    Timing in Beam Failure Recovery Procedure
    84.
    发明申请

    公开(公告)号:US20190306867A1

    公开(公告)日:2019-10-03

    申请号:US16366706

    申请日:2019-03-27

    摘要: A wireless device receives one or more messages comprising configuration parameters. The configuration parameters indicate: a plurality of bandwidth parts (BWPs) comprising a first BWP and a second BWP; and a timer value for a BWP inactivity timer. The BWP inactivity timer associated with the timer value starts in response to switching to the first BWP as an active BWP. A beam failure recovery procedure is initiated based on reaching a number of beam failure instance indications for the first BWP. Based on an expiry of the BWP inactivity timer during the beam failure recovery procedure: the beam failure recovery procedure for the first BWP is aborted; and the active BWP is switched from the first BWP to the second BWP.

    Aperiodic Indications For Beam Failure Recovery

    公开(公告)号:US20190254042A1

    公开(公告)日:2019-08-15

    申请号:US16273916

    申请日:2019-02-12

    摘要: A wireless device receives one or more messages comprising one or more configuration parameters. The one or more configuration parameters indicate: a value of a timer for controlling a radio link failure indication based on a beam failure recovery procedure, and a first number of out-of-synchronization indications. The wireless device determines a second number of out-of-synchronization indications. The timer associated with the value is started in response to the second number being equal to the first number of out-of-synchronization indications. A first failure of the beam failure recovery procedure is determined. The first failure is ignored, by not causing a radio link failure, in response to the timer running when the first failure is determined. A second failure of the beam failure recovery procedure is determined. A radio link failure is indicated in response to the timer being expired when the second failure is determined.

    PUCCH Based Beam Failure Recovery Procedure
    87.
    发明申请

    公开(公告)号:US20190394082A1

    公开(公告)日:2019-12-26

    申请号:US16438811

    申请日:2019-06-12

    摘要: A wireless device receives one or more messages comprising one or more configuration parameters indicating: one or more reference signals for a beam failure detection procedure; and a discontinuous reception (DRX) configuration for controlling transitions between a DRX inactive state and a DRX active state. The beam failure detection procedure is performed based on measurements of the one or more reference signals. A first value of a counter is determined based on detecting at least one beam failure instance during the DRX active state. A transition from the DRX active state to the DRX inactive state is made based on the DRX configuration. The beam failure detection procedure is stopped in response to the transitioning. The beam failure detection procedure continues with the first value of the counter after transitioning from the DRX inactive state to the DRX active state.

    New Radio Beam Failure Recovery Procedure Timing

    公开(公告)号:US20190305840A1

    公开(公告)日:2019-10-03

    申请号:US16366722

    申请日:2019-03-27

    摘要: A wireless device receives one or more messages comprising configuration parameters indicating a timer value of a bandwidth part (BWP) inactivity timer. The BWP inactivity timer associated with the timer value is started in response to switching to a first BWP as an active BWP. A random-access procedure for a beam failure recovery is initiated based on reaching a number of beam failure instance indications for at least one downlink control channel of the first BWP. The BWP inactivity timer is stopped based on initiating the random-access procedure. The at least one downlink control channel is monitored for a control information addressed to the wireless device. The random-access procedure for the beam failure recovery is stopped in response to receiving the control information via the at least one downlink control channel. The BWP inactivity timer is restarted based on the stopping the random-access procedure.