5G MULTICAST-BROADCAST SERVICES (MBS) MULTIPLEXING, RELIABILITY, AND POWER SAVINGS

    公开(公告)号:US20240187140A1

    公开(公告)日:2024-06-06

    申请号:US18552999

    申请日:2022-03-31

    CPC classification number: H04L1/1822 H04W4/06

    Abstract: Methods and apparatuses are described herein for Multi cast/Broadcast Services (MBS). The embodiments described herein are directed to procedures for managing multiplexed MBS traffic, for prioritization between MBS related UL traffic, unicast UL traffic, and SL traffic, for handling HARQ retransmissions over C-RNTI, to support PDCP Status Reporting for MBS services, and for a wireless transmit/receive unit (WTRU) joining already started/activated Multicast Sessions. In one example, a WTRU may receive multiplexed MBS services via one or more MBS radio bearers (MRB) and/or one or more unicast data radio bearers (DRBs). The WTRU may be configured with a single Service Data Adaptation Protocol (SDAP) entity for the MBS services, and demultiplexing of traffic may be performed at the SDAP layer. The WTRU may be configured to demultiplex multiple logical channels across different MBS services, where the logical channels are received over the same transport block.

    5G MULTICAST-BROADCAST SERVICES (MBS) RADIO ACCESS NETWORK ARCHITECTURE AND OPERATION

    公开(公告)号:US20230276470A1

    公开(公告)日:2023-08-31

    申请号:US18040338

    申请日:2021-08-05

    CPC classification number: H04W72/30

    Abstract: Methods and apparatuses are described herein for 5G MBS operation. The proposed method and procedures overcome the limitations that have been observed in LTE and UTRAN MBMS operation, address the unique characteristic of 5G NR, and meet the requirements set out by the envisioned 5G MBS use cases by providing functions including RAN xcasting area concepts that are flexible and dynamic, MBS radio bearer (MRB) types to support MBS services, RAN architectures to support the various MBS radio bearer types, as well as functionality split across the RAN nodes to support these radio bearers, procedures to allow radio bearer selection, monitoring, and switching, and procedures to allow xcast area management.

    METHOD AND APPARATUSES FOR NR SIDELINK DISCONTINUOUS RECEPTION

    公开(公告)号:US20240172325A1

    公开(公告)日:2024-05-23

    申请号:US18552720

    申请日:2022-03-31

    CPC classification number: H04W76/28 H04W72/25

    Abstract: A first apparatus receives, from a second apparatus via a sidelink (SL) transmission, first configuration parameters for a first SL DRX group and second configuration parameters for a second SL DRX group. The first configuration parameters for the first SL DRX group comprise: a common SL DRX parameter set that is shared with the second configuration parameters for the second SL DRX group, and a first dedicated SL DRX configuration parameter set. The first dedicated DRX parameter set comprises: a first on duration at the beginning of a SL DRX cycle of the first apparatus, and a first duration: after an occasion of a PSCCH carrying a first-stage SL control information (SCI) indicates a new SL transmission for a MAC entity of the first apparatus, or after an occasion of a PSSCH carrying a second-stage SCI indicates a new SL transmission for the MAC entity of the first apparatus. The first apparatus determines that the first apparatus is in a first SL active time for receiving information on the SL based on the first configuration parameters for the first SL DRX group, and in a second SL active time for receiving information on the SL based on the configuration parameter for the second SL DRX group.

    CAST TYPE AND COORDINATION BASED INTER-UE OPERATION FOR NR SIDELINK

    公开(公告)号:US20240015755A1

    公开(公告)日:2024-01-11

    申请号:US18250080

    申请日:2021-10-20

    CPC classification number: H04W72/23 H04W74/04 H04W72/25 H04W8/005

    Abstract: The present application describes an apparatus including a non-transitory memory including instructions stored thereon. The apparatus also includes a processor operably coupled to the non-transitory memory configured to execute a set of instructions. The instructions include sensing plural devices in a group to provide sidelink coordination. The instructions also include evaluating a coordination type of each of the plural devices, where the coordination type is scheduled and/or assisted. The instructions also include obtaining transmission and reception resources for the plural devices. The instruction further include determining the transmission and reception resources are dedicated or shared among the plural devices based on the coordination type. The instructions even further include determining a signaling type for each of the plural devices based on the coordination type.

    SYNCHRONIZATION SIGNAL BLOCK SCHEME AND ACQUISITION

    公开(公告)号:US20230327723A1

    公开(公告)日:2023-10-12

    申请号:US17998526

    申请日:2021-05-14

    CPC classification number: H04B7/0617 H04W56/0015

    Abstract: Synchronization Signal Block (SSB) management for new radio may be achieved through indication of a maximum number of beams for beamforming and/or through mechanisms for handling plural candidate SSBs. For example, a User Equipment (UE) may search a Primary Synchronization Signal (PSS) and/or a Secondary Synchronization Signal (SSS) to decode a Physical Broadcast Channel (PBCH) payload comprising and indication of a maximum number of beams (Q) supporting beamforming, e.g., in new radio unlicensed spectrum, and determine, based the indicator, Quasi Co-Located (QCL) Synchronization Signal Blocks (SSBs). Similarly, a UE may determine, from the PBCH payload, a primary DeModulation Reference Signal (DMRS) from which the UE may determine selection bits for an SSB. The UE may also determine, based a frequency range in use, to perform a secondary detection and based on the secondary detection, alter selection bits for accessing the SSB index.

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