5G Terminal Discovery Through Multi-Hop Relay Terminals
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Solution Overview
Problem
In 5G communication, when a first terminal is incapable of performing direct proximity-based service (Prose) with a second terminal, existing methods fail to efficiently establish communication via relay terminals, especially when multiple relay terminals are required to facilitate communication between distant devices.
Innovation Solution
A terminal discovery method involving a first relay terminal that receives a discovery message from a second relay terminal, generates a second discovery message carrying identifiers of the first and second terminals, and transmits it to the first terminal, enabling the first terminal to discover and communicate with the second terminal via one or more relay terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If relay terminals are used to enable communication between distant terminals, then communication connectivity is improved, but device complexity increases
Solution Approach 1:
The patent introduces relay terminals as intermediary devices that forward discovery messages between terminals that cannot directly discover each other. The first relay terminal receives a first discovery message from a second relay terminal and generates a second discovery message to transmit to the first terminal, effectively mediating the discovery process across multiple hops to establish communication connectivity between distant terminals.
2Area of stationary object
If multiple relay terminals are used to extend communication range, then coverage area is improved, but message transmission complexity increases
Solution Approach 1:
The patent segments the discovery message transmission process into multiple independent hops, where each relay terminal independently receives, processes, and forwards discovery messages. The first relay terminal separately handles the first discovery message from the second relay terminal and generates a distinct second discovery message for the first terminal, allowing the system to extend coverage area through multiple relay nodes while maintaining manageable message transmission complexity at each segment.
3Adaptability or versatility
If relay terminals facilitate indirect communication, then adaptability is improved, but information loss increases
Solution Approach 1:
The first relay terminal creates a copy of the discovery information from the first discovery message and embeds it within the second discovery message. The second discovery message carries identifier information about the second terminal (and optionally the first relay terminal), effectively copying and forwarding the essential discovery data through the relay terminal without requiring the original terminals to maintain direct connection, thus preserving information accuracy while enabling flexible indirect communication paths.
Data Source
AI summary
Provided is a terminal discovery method. The method is applicable to a first relay terminal, and includes: receiving a first discovery message from a second relay terminal; and transmitting a second discovery message to a first terminal; wherein the second discovery message is determined based on the first discovery message, and the second discovery message carries an identifier of the first relay terminal and an identifier of a second terminal.