SYSTEM AND METHOD FOR BEAM SWITCHING AND REPORTING

    公开(公告)号:US20190115967A1

    公开(公告)日:2019-04-18

    申请号:US16218377

    申请日:2018-12-12

    Abstract: A UE may receive a beam modification command that indicates a set of transmit beam indexes corresponding to a set of transmit beams of a base station, and each transmit beam index of the set of transmit beam indexes may indicate at least a transmit direction for transmitting a transmit beam by the base station. The UE may determine a set of receive beam indexes corresponding to receive beams of the UE based on the set of transmit beam indexes, and each receive beam index of the set of receive beam indexes may indicate at least a receive direction for receiving a receive beam by the UE. The UE may receive, from the base station, a signal through at least one receive beam corresponding to at least one receive beam index included in the set of receive beam indexes.

    SYSTEM AND METHOD FOR TRANSMITTING BEAM FAILURE RECOVERY REQUEST

    公开(公告)号:US20180368126A1

    公开(公告)日:2018-12-20

    申请号:US16002876

    申请日:2018-06-07

    Abstract: A user equipment (UE) can transmit a beam failure recovery request using contention-based physical random access channel (PRACH) resources to supplement and/or replace non-contention-based resources for transmitting the beam failure recovery request. The UE can reduce beam recovery latency by informing its intention for beam failure recovery by transmitting a beam failure recovery request during the random access channel (RACH) procedure. The base station may dedicate a set of RACH resources that can be used for both transmitting regular contention-based RACH messages and beam failure recovery request.

    RANDOM ACCESS CHANNEL (RACH) TIMING ADJUSTMENT
    128.
    发明申请

    公开(公告)号:US20180176958A1

    公开(公告)日:2018-06-21

    申请号:US15708585

    申请日:2017-09-19

    Abstract: Certain aspects of the present disclosure provide techniques for random access channel (RACH) communication. For example, certain aspects provide a method for wireless communication by a user-equipment (UE). The method generally includes transmitting a first message comprising a RACH preamble, receiving a second message comprising random access response (RAR) in response to the RACH preamble, transmitting a third message in response to the RAR, receiving a fourth message (MSG4) comprising a contention resolution message in response to the third message. In certain aspects, the fourth message may include a timing advance (TA) parameter which may be used to communicate one or more messages.

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