TRANSMISSION ADAPTATION AND GRANT-FREE ACCESS

    公开(公告)号:US20220386366A1

    公开(公告)日:2022-12-01

    申请号:US17886148

    申请日:2022-08-11

    Abstract: A wireless transmit receive unit (WTRU) may receive a set of candidate resources, which may be used for transmission. The WTRU may periodically perform CCA on a channel (e.g., before transmitting on the channel). When the channel is determined to be free, the WTRU may determine a resource for transmission from the candidate resources. The resource may be determined based on the time remaining in the time period. For example, when the time remaining in the time period is shorter, the WTRU may determine to transmit on a resource that comprises more frequency resources. The WTRU may determine a Multiple Input Multiple Output (MIMO) scheme based on the number of frequency resources. The WTRU may send a transmission on the resource, which may include a demodulation reference signal (DM-RS). The DM-RS may indicate the resource used from transmission to a receiver of the transmission.

    JOINT COMMUNICATION AND SENSING AIDED BEAM MANAGEMENT FOR NR

    公开(公告)号:US20220225121A1

    公开(公告)日:2022-07-14

    申请号:US17635209

    申请日:2020-08-14

    Abstract: Methods and apparatuses for receive (Rx) beam selection are described herein. A wireless transmit/receive unit (WTRU) may be configured to receive, from a base station (BS), configuration information for joint communication and sensing (JCS) reference signals. The configuration information may include resources for reference signal transmission and resources for measurement reporting. The WTRU may be further configured to receive, from the BS, an indication to activate a subset of the resources for JCS reference signal transmission. The WTRU may be further configured to transmit, a plurality of JCS reference signals using the activated subset of resources for reference signal transmission. The WTRU may be further configured to measure, via a plurality of Rx beams, a backscatter power associated with each of the transmitted plurality of JCS reference signals. The WTRU may be further configured to calculate beam blockage statistics based on the measured backscatter power.

    METHODS, APPARATUSES AND SYSTEMS DIRECTED TO IDLE/INACTIVE MODE POSITIONINGS IN NR

    公开(公告)号:US20220167301A1

    公开(公告)日:2022-05-26

    申请号:US17441008

    申请日:2020-03-16

    Abstract: Methods, apparatuses, systems, etc., directed to performing positioning of a wireless transmit/receive unit (WTRU) while it is in idle mode and/or inactive mode (collectively “idle/inactive mode”) in NR are disclosed herein. Performing positioning, including positioning measurement and/or reporting, in idle/inactive mode may allow for increased positioning accuracy and/or decreased latency of location determination. In various embodiments, a WTRU in idle/inactive mode may transmit a positioning measurement report in various ways, including (i) in a Random-Access Channel (RACH) preamble; (ii) appended to a RACH preamble; and/or (iii) in a Physical Uplink Shared Channel. In various embodiments, a WTRU in idle/inactive mode may transmit uplink-based positioning related reference signals. In various embodiments, a WTRU in an idle/inactive mode may transmit, over a dedicated physical channel, (e.g., downlink) positioning measurement reports and/or reference signals (RSs) for uplink positioning measurements.

    TRANSMISSION ADAPTATION AND GRANT-FREE ACCESS

    公开(公告)号:US20200077437A1

    公开(公告)日:2020-03-05

    申请号:US16610368

    申请日:2018-04-25

    Abstract: A wireless transmit receive unit (WTRU) may receive a set of candidate resources, which may be used for transmission. The WTRU may periodically perform CCA on a channel (e.g., before transmitting on the channel). When the channel is determined to be free, the WTRU may determine a resource for transmission from the candidate resources. The resource may be determined based on the time remaining in the time period. For example, when the time remaining in the time period is shorter, the WTRU may determine to transmit on a resource that comprises more frequency resources. The WTRU may determine a Multiple Input Multiple Output (MIMO) scheme based on the number of frequency resources. The WTRU may send a transmission on the resource, which may include a demodulation reference signal (DM-RS). The DM-RS may indicate the resource used from transmission to a receiver of the transmission.

    JOINT COMMUNICATION AND SENSING AIDED RANDOM ACCESS CHANNEL

    公开(公告)号:US20230254899A1

    公开(公告)日:2023-08-10

    申请号:US17765498

    申请日:2020-10-02

    CPC classification number: H04W74/0833

    Abstract: Systems, devices and methods for a backscatter measurement based multiple RACH preamble transmissions are disclosed. A WTRU may receive a JCS-RS configuration comprising a minimum RACH preamble retransmission interval. The JCS-RS configuration may comprise a JCS backscatter power fraction (λ) of the WTRU transmit power (PTx). The WTRU may transmit a RACH preamble in a RACH occasion corresponding to a preferred SS/PBCH Index using an initial WTRU transmit beam, having an associated first RA-RNTI value. The backscatter power (PBS) may be measured using the WTRU receive beam corresponding to the WTRU transmit beam used for the RACH preamble transmission. On a condition that PBS>λPTx, the WTRU may retransmit the RACH preamble after a retransmission interval, on resources associated with a second RA-RNTI value. The WTRU may be configured for monitoring the PDCCH common search space with the first RA-RNTI and the second RA-RNTI, for respective RAR window intervals

    METHODS, ARCHITECTURES, APPARATUSES AND SYSTEMS DIRECTED TO WIRELESS TRANSMIT/RECEIVE UNIT (WTRU) INITIATED ACTIVE SENSING

    公开(公告)号:US20230086144A1

    公开(公告)日:2023-03-23

    申请号:US17802679

    申请日:2021-03-06

    Abstract: Methods, architectures, apparatuses and systems directed to active sensing in a wireless communications system (WCS) are provided. A method may include receiving, from a network element, information indicating an activation of a first of a plurality of sensing configurations, wherein the first sensing configuration and a second of a plurality of sensing configurations may include information indicating first and second resources of the WCS; transmitting a first sensing signal according to the first sensing configuration and using the first resources; performing first measurements related to the first sensing signal; transmitting, to the network element, information indicating a change from the first sensing configuration to the second configuration; receiving, from the network element, information indicating an acknowledgment of the change in the sensing configurations; transmitting a second sensing signal according to the second sensing configuration and using the second resources; and performing second measurements related to the second sensing signal.

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