MUSIM Terminal Capability Restriction Signaling in 5G RRC
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Solution Overview
Problem
In next-generation mobile communication systems, there is a need for efficient management of temporary capability restrictions in multi-universal subscriber identity module (MUSIM) terminals to optimize radio resource control (RRC) operations between user equipment (UE) and base stations, particularly in scenarios involving multiple USIMs sharing hardware resources.
Innovation Solution
A method and device where a UE receives system information block 1 (SIB1) from a base station to determine temporary capability restrictions and transmits a first RRC message indicating these restrictions, allowing the base station to adjust RRC configurations accordingly, ensuring optimal resource allocation and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If MUSIM terminal shares hardware resources for multiple USIMs, then device functionality and versatility are improved, but temporary capability restrictions occur that affect communication reliability
Solution Approach 1:
The terminal performs capability restriction determination before actual communication operations. The base station is notified in advance about temporary capability restrictions through RRC messages, allowing the network to pre-adjust resource allocation and avoid scheduling conflicts that would compromise communication reliability.
Solution Approach 2:
The terminal provides feedback to the base station about its capability status through RRC messages. This feedback mechanism enables the base station to adapt its scheduling and resource allocation decisions based on the terminal's current MUSIM operation state, ensuring reliable communication despite hardware sharing constraints.
2Productivity
If terminal provides capability restriction information to base station, then system performance and resource management are improved, but additional signaling overhead and message transmission are required
Solution Approach 1:
The capability restriction information is extracted and transmitted only when actually needed, rather than continuously. The terminal determines capability restrictions dynamically and sends notifications only when changes occur, minimizing unnecessary signaling while ensuring the base station has current information for optimal resource management.
Solution Approach 2:
The system uses dynamic parameter changes in RRC messages to convey capability restriction status. By encoding the capability information as configurable parameters that can be updated on-demand, the system achieves efficient resource management without requiring continuous overhead signaling.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes receiving, from a base station, system information block 1 (SIB1), determining whether the UE has a temporary capability restriction, and in case that the SIB1 comprises information that allows to send an indicator related to the temporary capability restriction, and the UE has the temporary capability restriction, transmitting, to the base station, a first radio resource control (RRC) message including the indicator, wherein the indicator indicates temporary capability restriction associated with multi universal subscriber identity module (MUSIM) operation.