Method for enabling small data transmission in RRC_INACTIVE state by retrieving UE context and managing gNB handovers through SDT signaling.

Patentradars sammanfattning

This invention relates to optimizing small data transmission (SDT) in 5G/NR networks when a user equipment (UE) is in RRC_INACTIVE state with CM-CONNECTED status. The system retrieves UE context from the last serving gNB via the core network (AMF), allows continued SDT operation across gNB transitions, and manages user plane routing through Xn-U path switching to maintain efficient small data delivery without full RRC connection establishment.

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