SYSTEM AND METHOD FOR BANDWIDTH PART OPERATION

    公开(公告)号:US20230379910A1

    公开(公告)日:2023-11-23

    申请号:US18363467

    申请日:2023-08-01

    CPC classification number: H04W72/1273 H04W24/10 H04W72/0453 H04W72/23

    Abstract: Methods and systems are described herein for bandwidth part (BWP) operation in 5G wireless systems. A wireless transmit/receive unit (WTRU) may be configured to receive a physical downlink control channel (PDCCH) transmission on a first BWP associated with a first carrier. The PDCCH transmission may include scheduling information for receiving a physical shared downlink channel (PDSCH) transmission via a second BWP associated with a second carrier. The WTRU may be configured to determine one or more quasi co-located (QCL) parameters for the PDSCH transmission using a lowest transmission configuration indication (TCI) state associated with the second BWP associated with the second carrier based on a scheduling offset of the PDSCH transmission being less than a threshold and on the PDSCH transmission being received via the second BWP. The WTRU may be configured to receive the PDSCH transmission using the determined one or more QCL parameters.

    METHODS AND APPARATUS FOR BEAMFORMING AND INITIAL ACCESS

    公开(公告)号:US20210306870A1

    公开(公告)日:2021-09-30

    申请号:US17346716

    申请日:2021-06-14

    Abstract: A wireless transmit/receive unit (WTRU) may receive a configuration message from a first base station including correspondence information regarding a plurality of beam reference signals, the correspondence information including information regarding designation of at least one set of physical random access channel (PRACH) resources for each of the plurality of beam reference signals. The WTRU may measure the plurality of beam reference signals transmitted from a second base station and select a beam reference signal from among the plurality of measured beam reference signals. The WTRU may determine a set of PRACH resources for the selected beam reference signal based on the information regarding designation of at least one set of PRACH resources for each of the plurality of measured beam reference signals included in the correspondence information. The WTRU may transmit, to the second base station, a PRACH transmission using at least one PRACH resource of the determined set.

    Methods and apparatus for beamforming and initial access

    公开(公告)号:US11082863B2

    公开(公告)日:2021-08-03

    申请号:US16538379

    申请日:2019-08-12

    Abstract: A method and apparatus for determining Physical Random Access Channel (PRACH) resources and using beams are disclosed herein. In an example, a wireless transmit/receive unit (WTRU) may measure a plurality of beam reference signals transmitted from a base station. Further, the WTRU may select a beam reference signal from among the plurality of measured beam reference signals. Also, the WTRU may receive a configuration message from the base station that includes correspondence information regarding the plurality of beam reference signals, wherein the correspondence information designates at least one set of PRACH resources for each of the plurality of beam reference signals. In addition, the WTRU may determine a set of PRACH resources designated for the selected beam reference signal based on the received correspondence information. Moreover, the WTRU may transmit a PRACH signal using at least one PRACH resource of the determined set of PRACH resources.

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