5G MIB Update Paging for Selective System Information Reacquisition
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Solution Overview
Problem
In 5G wireless communication systems, the unnecessary reacquisition of Master Information Block (MIB) leads to data interruption, unnecessary power consumption, and delay in acquiring updated system information due to the lack of efficient notification mechanisms for MIB updates, especially when UE switches between different bandwidths and subcarrier spacings.
Innovation Solution
A method and system for a 5G communication system that includes sending a notification (e.g., MIBUpdateIndication) in a paging message or paging DCI to indicate whether MIB parameters have been updated, allowing the UE to selectively reacquire MIB only when necessary, thereby reducing unnecessary reacquisitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE reacquires MIB whenever system information is updated, then system information is ensured to be up-to-date, but data interruption and power consumption increase unnecessarily
Solution Approach 1:
The network provides feedback information (MIBUpdateIndication) to the UE through paging messages, indicating whether the MIB has been updated. The UE uses this feedback to determine whether to reacquire the MIB, avoiding unnecessary reacquisitions when no update has occurred, thus reducing power consumption while ensuring reliability when needed.
Solution Approach 2:
The system dynamically adjusts the MIB reacquisition behavior based on actual update conditions. Instead of static reacquisition on every notification, the system becomes dynamic by checking the update indication and only reacquiring when necessary, optimizing the balance between reliability and energy efficiency.
2Reliability
If UE reacquires MIB on every system information update notification, then updated information is obtained, but acquisition delay and data interruption occur
Solution Approach 1:
The feedback mechanism (MIBUpdateIndication) allows the UE to understand whether the MIB has actually been updated before initiating reacquisition. This eliminates unnecessary reacquisitions that cause delay and data interruption, while ensuring that the UE does acquire updated information when the network has indeed updated the MIB.
3Loss of time
If UE continuously monitors for system information changes, then updated MIB is acquired timely, but power consumption increases
Solution Approach 1:
The system uses periodic paging messages to notify the UE about MIB updates rather than continuous monitoring. The UE wakes up periodically to check paging messages for update indications, which is more energy-efficient than continuous monitoring while still ensuring timely acquisition of updates when they occur.
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.