Sidelink Relay Switching for Communication Continuity
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Solution Overview
Problem
Existing sidelink relay communication systems face challenges when a relay terminal cannot support the relay function, necessitating methods for transitioning to a new relay terminal to maintain communication.
Innovation Solution
A method involving a transmitting terminal, relay terminal, and receiving terminal to establish connections with a new relay terminal through message exchanges, including relay release and configuration indicators, allowing seamless transition and continuation of sidelink relay communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If relay communication is performed through a first relay terminal, then communication can be established between transmitting and receiving terminals, but the system cannot adapt when the relay terminal cannot support the relay function
Solution Approach 1:
The patent implements dynamic relay terminal selection where the transmitting terminal can switch from a first relay terminal to a second relay terminal based on support capability. The system dynamically adjusts the relay path by receiving relay release indicators and configuring new relay connections, ensuring communication reliability while adapting to varying terminal capabilities.
Solution Approach 2:
The transmitting terminal autonomously determines whether a relay terminal supports the relay function by receiving indication messages, and independently initiates the process of switching to an alternative relay terminal. The terminal self-manages the connection reconfiguration without requiring external intervention, maintaining communication continuity through self-directed adaptation.
2Reliability
If a new relay terminal is configured to replace an unsupported relay terminal, then communication reliability is maintained, but additional message exchanges and configuration steps are required
Solution Approach 1:
The system performs preliminary detection of relay terminal support capability before establishing full relay communication. By receiving relay release indicators in advance and proactively configuring alternative relay terminals, the system prevents communication interruptions rather than reacting to failures, reducing the complexity of emergency reconfiguration.
Solution Approach 2:
The patent implements a feedback mechanism where relay terminals send indication messages to transmitting terminals about their support capability. This feedback loop enables the transmitting terminal to make informed decisions about relay terminal selection and switching, systematically managing the complexity of relay configuration through structured information exchange.
3Adaptability or versatility
If relay release indicator messages are exchanged to switch relay terminals, then adaptability to relay terminal capabilities is improved, but communication interruption time increases
Solution Approach 1:
The transmitting terminal performs preliminary detection of relay terminal support capability using indication messages before communication interruptions occur. By identifying unsupportive relay terminals in advance and pre-configuring alternative relay paths, the system minimizes actual interruption time when switching becomes necessary, as the alternative path is already prepared.
Solution Approach 2:
The patent enables the transmitting terminal to rapidly skip from an unsupported first relay terminal to a supported second relay terminal by using streamlined message exchanges. The relay release indicator mechanism allows the terminal to quickly identify and bypass problematic relay connections, rushing through the switching process to minimize communication interruption time.
Data Source
AI summary
A method and a device for relay communication in a sidelink are disclosed. A transmission terminal operation method comprises the steps of: performing first relay communication with a reception terminal through a first relay terminal; receiving a first message including a relay release indicator from the first relay terminal; setting a connection between a transmission terminal and a second relay terminal when the first message is received; and transmitting, through the first relay terminal, to the reception terminal, a second message including a first relay setting completion indicator for indicating that a connection setting between the transmission terminal and the second relay terminal is complete.