UE RRC State Triggering for High-Reliability MBS Reception
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing radio resource control (RRC) connection establishment and resume procedures for UEs to receive high-reliability multicast and broadcast services in an NR system, particularly when transitioning from RRC_IDLE or RRC_INACTIVE states to RRC_CONNECTED states.
Innovation Solution
A wireless connection control method where user equipment (UE) autonomously or through the non-access stratum (NAS) layer initiates an RRC connection establishment/resume procedure, selecting appropriate access types and performing unified access control (UAC) to ensure efficient reception of multicast and broadcast services, including mechanisms for paging, change notifications, and broadcast signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE autonomously triggers RRC connection establishment/resume procedure upon receiving indication information, then service reception reliability is improved, but device complexity and signaling overhead increase
Solution Approach 1:
The network pre-configures UE with indication information containing MBS service identifiers and RRC state requirements before UE needs to receive services. This allows UE to proactively determine whether to trigger RRC connection establishment without real-time network intervention, improving reliability while reducing signaling overhead.
Solution Approach 2:
UE autonomously determines whether to trigger RRC connection establishment or resume procedure by checking if indication information contains MBS services of interest. The UE self-manages the connection state transition without requiring continuous network control, reducing device complexity and signaling overhead.
2Reliability
If UE transitions to RRC_CONNECTED state for MBS service reception, then service quality is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The system dynamically adjusts UE RRC state based on service requirements. UE transitions to RRC_CONNECTED state only when indication information specifies MBS services requiring connected state reception. For other services, UE remains in idle or inactive states, optimizing resource utilization while ensuring service quality when needed.
Solution Approach 2:
Different MBS services have different RRC state requirements. The system applies local quality by matching specific services with appropriate UE states - high-reliability services require RRC_CONNECTED state while other services can be received in idle or inactive states, optimizing overall resource utilization.
3Measurement precision
If UE receives detailed indication information about MBS services, then service selection accuracy is improved, but information processing overhead increases
Solution Approach 1:
The indication information extracts only essential elements (MBS service identifiers and RRC state requirements) needed for UE to determine connection state transitions. By taking out only the necessary information rather than transmitting complete service descriptions, the system improves service selection accuracy while minimizing information processing overhead.
Data Source
AI summary
Provided in the present disclosure are a wireless connection control method and user equipment. The wireless connection control method includes: user equipment (UE) receiving indication information including one or more multicast and broadcast service (MBS) services; the UE determining, on the basis of the indication information, whether an MBS service of interest to the UE is present; and if an MBS service of interest to the UE is present, the UE triggering a radio resource control (RRC) connection establishment/resume procedure.