Apparatus, method and computer program

    公开(公告)号:US11329711B2

    公开(公告)日:2022-05-10

    申请号:US17041344

    申请日:2018-04-06

    Abstract: An apparatus comprising at least one processor, and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to: in response to a determination of a failure of one or more communication beams between the apparatus and a second apparatus, initiate a beam recovery procedure by transmitting a message to a third apparatus, the message comprising information of the failure of one or more communication beams; start a timer in response to the transmitting a message to the third apparatus; and determine whether a beam failure acknowledgement is received from the third apparatus before the timer expires.

    MANAGEMENT OF HANDOVER CANDIDATE CELLS

    公开(公告)号:US20210120458A1

    公开(公告)日:2021-04-22

    申请号:US16496554

    申请日:2018-02-05

    Abstract: Various communication systems may benefit from improved handover. For example, it may be helpful to manage a list candidate cells to which a user equipment may be handed over. A method may include receiving at a user equipment a list of prepared candidate cells from a source cell. The method may also include transmitting the list of prepared candidate cells from the user equipment to a target cell after or during handover from the source cell to the target cell.

    Connection setup recovery for wireless networks

    公开(公告)号:US10966271B2

    公开(公告)日:2021-03-30

    申请号:US16473935

    申请日:2016-12-28

    Abstract: A technique includes determining, by a user device, a first preferred downlink beam, sending, by the user device to a base station, an indication of the first preferred downlink beam, receiving, by the user device from the base station, a temporary configuration information at least for use in reporting an updated or second preferred downlink beam, detecting that the user device has not received a connection response message from the base station indicating that a connection has been established between the user device and the base station, determining, by the user device, a second preferred downlink beam, sending, by the user device to a base station in response to the detecting and based at least in part on the temporary configuration information, an indication of the second preferred downlink beam to the base station, and receiving, via the second preferred downlink beam, a connection response message from the base station.

    BEAM REFINEMENT IN TWO-STEP RANDOM ACCESS CHANNEL (RACH) PROCEDURE

    公开(公告)号:US20200267768A1

    公开(公告)日:2020-08-20

    申请号:US16276364

    申请日:2019-02-14

    Abstract: A method, apparatus, and a computer-readable storage medium for beam refinement of a two-step random access channel (RACH) procedure are provided. In some implementations, the method may include receiving a plurality of synchronization signal blocks (SSBs), a plurality of channel state information-reference signals (CSI-RSs) associated with each of the plurality of synchronization signal blocks (SSBs), and random access channel (RACH) configuration data from a gNB. The method may further include transmitting a first message of the two-step random access channel (RACH) procedure to the gNB, the first message including a first portion and a second portion. The first portion includes a preamble associated with a selected channel state information-reference signal (CSI-RS) of the plurality of channel state information-reference signals (CSI-RSs) and the second portion includes data associated with the preamble, and the data transmitted using pre-configured or pre-allocated resources.

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