5G System Information Acquisition With Paging-Based MIB Feedback
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Solution Overview
Problem
In the 5G wireless communication system, the unnecessary reacquisition of the master information block (MIB) leads to data interruption, unnecessary power consumption, and delay in acquiring updated system information due to the lack of efficient methods for determining whether MIB parameters have been updated, causing UEs to switch bandwidths and subcarrier spacings even when no changes occur.
Innovation Solution
A method and system for a terminal to determine a paging frame and occasion based on an offset, DRX cycle, and identifier, and to monitor these occasions to receive a paging message, along with acquiring system information block 1 (SIB1) based on the terminal's state, using notifications in paging messages or DCI to indicate MIB and SIB updates, thereby optimizing MIB acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs continuously monitor and reacquire MIB to ensure system information is up-to-date, then reliability of system information is improved, but power consumption increases and data interruption occurs
Solution Approach 1:
The network provides feedback to UEs through paging messages indicating whether MIB parameters have been updated. UEs monitor paging occasions and receive update notifications only when necessary, rather than continuously reacquiring MIB. This feedback mechanism enables UEs to maintain accurate system information while minimizing unnecessary monitoring and power consumption.
2Reliability
If UEs reacquire MIB frequently to ensure updated system information, then system information freshness is improved, but data interruption and acquisition delay increase
Solution Approach 1:
The network performs preliminary action by preparing MIB update notifications in advance and transmitting them through paging messages before UEs would need to reacquire MIB. This allows UEs to be notified of updates proactively, reducing unnecessary reacquisition attempts and minimizing acquisition delays while maintaining system information freshness.
3Adaptability or versatility
If UEs switch bandwidth and subcarrier spacing to acquire MIB, then system information acquisition capability is improved, but data interruption occurs
Solution Approach 1:
The network provides feedback through paging messages indicating whether MIB parameters require updates. UEs use this feedback to determine whether bandwidth and subcarrier spacing switching is necessary, thereby maintaining MIB acquisition capability while avoiding unnecessary switching operations that cause data interruption.
4Productivity
If UEs monitor paging occasions to detect MIB updates, then system information update efficiency is improved, but device complexity increases
Solution Approach 1:
The network provides structured feedback through paging messages with specific formats indicating MIB update status. UEs monitor paging occasions using standardized procedures and interpret the feedback information according to defined protocols, improving system information update efficiency while managing device complexity through standardized mechanisms.
Data Source
AI summary
A communication method and system for converging a fifth generation (5G) communication system for supporting higher data rates beyond a fourth generation (4G) system with a technology for Internet of things (IoT) are provided. The communication method and system may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method of a terminal receiving a paging message is provided. In addition, a method of a terminal acquiring system information is provided.