Remote UE Sidelink Relay Selection for Cellular Connectivity
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Solution Overview
Problem
In cellular communication systems, sidelink communication between user equipment and relay equipment is disrupted by changes in user equipment status, such as movement, making it difficult to maintain appropriate communication.
Innovation Solution
A communication control method and system that determines the network communication state between remote user equipment and a cellular communication network, and performs control related to sidelink communication based on this state, allowing for appropriate sidelink communication by selecting and re-selecting relay user equipment as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sidelink communication is established between remote user equipment and relay user equipment, then direct wireless communication is enabled, but communication is disrupted when user equipment status changes such as movement
Solution Approach 1:
The patent implements dynamic relay user equipment selection based on real-time network communication state monitoring. The remote user equipment continuously evaluates communication conditions and switches relay nodes adaptively, transforming the static relay connection into a dynamic system that responds to changing user equipment status such as movement, thereby maintaining communication reliability while adapting to environmental changes.
Solution Approach 2:
The patent establishes a feedback mechanism where the remote user equipment monitors network communication state and uses this information to control sidelink communication parameters. By continuously measuring communication quality and adjusting relay selection based on this feedback, the system maintains reliable sidelink communication while adapting to user equipment status changes.
2Ease of operation
If relay user equipment is selected for sidelink communication, then remote user equipment can communicate with the network, but communication control becomes complex due to status changes
Solution Approach 1:
The patent implements self-service mechanisms where the remote user equipment autonomously monitors network communication state and performs relay user equipment selection without complex external control. The system automatically evaluates communication conditions and makes relay switching decisions, simplifying operation while managing complexity through automated procedures.
Solution Approach 2:
The patent performs preliminary assessment of network communication state before establishing sidelink communication. By evaluating communication conditions in advance and pre-selecting appropriate relay user equipment, the system simplifies the communication setup process while avoiding complex real-time control decisions during active communication.
Data Source
AI summary
A communication control method used in a cellular communication system includes determining, by a remote user equipment having sidelink connection with a relay user equipment, a network communication state between the remote user equipment and a cellular communication network, and performing, by the remote user equipment, control related to sidelink communication between the remote user equipment and the relay user equipment, based on the network communication state.


