Sidelink Relay System Information Acquisition for Coverage and Power Savings
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Solution Overview
Problem
There is a need for a scheme to support service coverage expansion, improve data transmission reliability, and reduce terminal power consumption in sidelink communication between terminals in wireless communication systems.
Innovation Solution
A method and apparatus enabling a sidelink remote terminal to acquire a system information message from a base station through direct communication with a sidelink relay terminal while maintaining a radio resource control (RRC)-connected mode, allowing for sidelink-based data transmission/reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a terminal in RRC-connected mode directly acquires system information from the base station, then the acquisition speed is fast, but the service coverage is limited and power consumption increases
Solution Approach 1:
The patent introduces a relay terminal as an intermediary between the base station and the remote terminal. The relay terminal receives system information from the base station and forwards it to the remote terminal via sidelink communication, enabling coverage extension while maintaining efficient information delivery
2Reliability
If a terminal in RRC-connected mode directly communicates with the base station, then the data transmission reliability is high, but the terminal power consumption increases
Solution Approach 1:
The relay terminal serves as a mediator that handles system information forwarding, reducing the communication distance and power consumption for remote terminals while maintaining connection reliability through the established sidelink interface
3Area of stationary object
If system information is transmitted through relay terminal using sidelink, then the service coverage is expanded and power consumption is reduced, but the acquisition process becomes more complex
Solution Approach 1:
The relay terminal automatically handles the complexity of sidelink communication and system information forwarding, transparently delivering system information to remote terminals without requiring complex configuration or management from the remote terminals themselves
4Use of energy by moving object
If relay terminal is used for system information transmission, then the terminal power consumption is reduced, but the data transmission reliability may deteriorate
Solution Approach 1:
The relay terminal maintains a reliable connection with the base station while providing sidelink communication to remote terminals, ensuring that system information is accurately forwarded without compromising transmission reliability
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method and apparatus for a sidelink remote user equipment (UE) to request and acquire a system information message from a base station through a sidelink relay UE in a wireless communication system are provided.