Differential SIB Broadcast for Wireless Network Resource Efficiency
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Solution Overview
Problem
Current LTE air interface changes to support coverage-constrained UEs result in performance degradation for regular UEs, as they require signal repetition for System Information Block (SIB) messages, which is resource-inefficient and power-intensive.
Innovation Solution
Implementing differential information broadcast for SIBs, where only changed parameters are transmitted between full SIB repetitions, reducing the need for extensive signal repetition and minimizing resource wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal repetition is used for SIB messages to support coverage-constrained UEs, then coverage is improved, but resource utilization and power efficiency deteriorate
Solution Approach 1:
The patent extracts only the changed parameters from the full SIB messages and transmits them separately as differential updates. This allows coverage-constrained UEs to receive necessary information without requiring extensive repetition of entire SIB messages, thereby reducing resource consumption and power usage while maintaining coverage reliability.
Solution Approach 2:
The SIB messages are segmented into full SIB transmissions and differential update portions. Coverage-constrained UEs can acquire full SIBs when needed, while other UEs receive only differential updates, optimizing resource utilization and power efficiency without compromising coverage for constrained devices.
2Reliability
If signal repetition is used for SIB messages to support coverage-constrained UEs, then coverage is improved, but resource utilization deteriorates
Solution Approach 1:
The patent extracts only the changed parameters from the full SIB messages and transmits them separately as differential updates. This allows coverage-constrained UEs to receive necessary information without requiring extensive repetition of entire SIB messages, thereby reducing resource consumption and power usage while maintaining coverage reliability.
Solution Approach 2:
The SIB messages are segmented into full SIB transmissions and differential update portions. Coverage-constrained UEs can acquire full SIBs when needed, while other UEs receive only differential updates, optimizing resource utilization and power efficiency without compromising coverage for constrained devices.
3Loss of information
If full SIB messages are transmitted repeatedly, then all UEs receive complete information, but transmission frequency and resource consumption increase
Solution Approach 1:
The patent extracts only the changed parameters from the full SIB messages and transmits them separately as differential updates. This allows coverage-constrained UEs to receive necessary information without requiring extensive repetition of entire SIB messages, thereby reducing resource consumption and power usage while maintaining coverage reliability.
Solution Approach 2:
The system dynamically adapts transmission strategies based on UE type. Coverage-constrained UEs receive full SIB messages when needed, while other UEs receive only differential updates with lower transmission frequency, optimizing information delivery efficiency and reducing unnecessary transmissions.
Data Source
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AI summary
Methods and apparatuses for communicating in a wireless network include receiving full and differential System Information Blocks (SIBs) and updating a parameter that has changed based on the differential SIB. Further apparatuses include control circuitry to generate a first SIB and second SIB, the second SIB indicating information that has changed. Further, a method includes generating a full SIB and generating a differential SIB based on updated parameters.