SYSTEM AND METHOD FOR MANAGING STATE TRANSITIONS OF A MULTICAST UE IN A WIRELESS COMMUNICATION SYSTEM
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United States of America
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Issued Date -
Apr 3, 2025
app pub date -
Sep 25, 2024
filing date -
Sep 25, 2024
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Abstract
The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system for supporting a higher data transmission rate. A method and a system for manage state transitions of a multicast broadcast service (MBS) user equipment (UE), manage a service continuity of the multicast UE, and manage packet data convergence protocol (PDCP) synchronizations of the multicast UE in a wireless network are provided. A radio resource control (RRC) connection resume procedure is initiated when point-to-multipoint (PTM) configurations are not available in a cell after cell selection and/or cell reselection, and the UE has at least one activated session in the RRC_INACTIVE state. The RRC connection resume procedure is also initiated when the cell after cell selection and/or cell reselection is an MBS control channel (MCCH)-less cell and the UE has at least one activated session (for example, indicated to monitor G-RNTI) in the RRC_INACTIVE state. Further, multicast MRBs are handled during motility by providing a mechanism for multicast reception across cells in the radio access network (RAN) notification area (RNA), where PDCP synchronizations are indicated or not indicated in the multicast session.
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