Relay UE Selection Using Network Compatibility Information
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Solution Overview
Problem
In wireless communication systems, remote UEs reporting sidelink radio signal measurements to a base station may result in the selection of relay UEs connected to different networks, leading to communication failures or data loss due to incompatible network states.
Innovation Solution
A method where a first UE receives network information from second UEs, sends it to a base station, and receives indication information to operate a selected second UE in a first working state, ensuring network compatibility and reducing communication errors by selecting UEs within the same network or meeting signal quality thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If remote UEs report sidelink radio signal measurements to base station for relay UE selection, then communication coverage is extended, but communication reliability deteriorates due to incompatible network states between relay UEs and remote UEs
Solution Approach 1:
The patent implements feedback mechanisms where relay UEs transmit network information (including PLMN identity and cell ID) back to remote UEs and base stations. This feedback loop enables the system to verify network compatibility between relay UEs and remote UEs before establishing communication, preventing communication failures while maintaining extended coverage.
Solution Approach 2:
The base station acts as an intermediary that receives network information from relay UEs, processes compatibility assessment, and makes informed relay UE selection decisions. This intermediary role ensures that only compatible relay UEs are selected, resolving the reliability issue while preserving the coverage extension benefit.
2Device complexity
If relay UEs are selected based solely on signal strength measurements, then selection process is simplified, but data transmission errors increase due to network incompatibility
Solution Approach 1:
The patent performs preliminary actions by having relay UEs transmit their network information (PLMN identity, cell ID) before the selection process. This advance information gathering enables the base station to assess network compatibility in advance, preventing data transmission errors without significantly increasing selection process complexity.
Solution Approach 2:
The patent changes the selection parameters from solely signal strength metrics to a composite assessment including network compatibility parameters (PLMN match, cell ID match). This parameter expansion maintains selection simplicity while dramatically improving data transmission reliability by preventing incompatible relay connections.
3Adaptability or versatility
If the system accepts relay UEs from different networks to maximize connectivity options, then system versatility improves, but communication failures increase due to network state incompatibility
Solution Approach 1:
The patent applies local quality by assessing network compatibility characteristics specific to each relay UE's local network environment (PLMN identity, cell ID). This localized assessment ensures that relay UEs are selected based on their specific network attributes matching the remote UE's network, maximizing both connectivity options and communication success rate simultaneously.
Data Source
AI summary
An information transmission method and apparatus are disclosed. A first UE receives network information that is respectively sent by one or more second UEs and is associated with a network state of each second UE; sends the network information to a base station; and receives first indication information from the base station. The first indication information indicates at least one second UE in the one or more second UEs to operate in a first working state.