Candidate Relay Selection for Continuous Terminal Links
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Solution Overview
Problem
Existing communication systems face challenges in maintaining effective communication links between terminal devices when the wireless channel quality deteriorates, leading to potential communication interruptions and reduced link capacity.
Innovation Solution
A relay connection method is introduced, where a first terminal device sends a candidate relay list to a second terminal device, allowing for the establishment of a relay connection through identified candidate relay terminal devices based on specific conditions such as channel quality and capability, using thresholds and offsets configured by the network device or directly received from other terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct communication is used between terminal devices, then communication simplicity is maintained, but communication reliability deteriorates when wireless channel quality deteriorates
Solution Approach 1:
The patent introduces relay terminal devices as intermediaries between communicating terminal devices. When direct communication quality deteriorates, the relay terminal establishes alternative communication paths by receiving data from one terminal and forwarding it to another, thereby maintaining communication reliability without requiring complex multi-hop routing protocols.
Solution Approach 2:
The patent implements dynamic communication path selection where terminal devices can switch between direct communication and relay-based communication based on real-time channel quality. The system dynamically adjusts the communication structure by selecting appropriate relay terminals from a candidate list when direct links deteriorate, resolving the contradiction between simplicity and reliability.
2Reliability
If relay connections are established to maintain communication quality, then link capacity is improved, but system complexity increases due to relay selection and management
Solution Approach 1:
The patent applies preliminary action by having terminal devices pre-establish candidate relay lists before actual communication quality deterioration occurs. The relay selection criteria and candidate lists are prepared in advance based on historical channel quality and device capabilities, reducing the complexity of real-time relay management while maintaining high link capacity.
Solution Approach 2:
The patent uses parameter changes by adjusting relay selection thresholds and candidate list criteria based on communication conditions. When channel quality deteriorates, the system changes parameters such as relay priority weights and selection thresholds to optimize link capacity, thereby managing relay complexity through adaptive parameter adjustment rather than fixed complex protocols.
3Duration of action of stationary object
If candidate relay lists are maintained for alternative connections, then communication continuity is improved, but information processing overhead increases
Solution Approach 1:
The patent extracts only the essential information needed for relay selection by maintaining candidate relay lists that contain only critical parameters such as relay identifiers and basic capability indicators. This extraction approach ensures communication continuity by having pre-identified alternatives while minimizing information processing overhead by excluding unnecessary detailed information from the candidate lists.
Data Source
AI summary
A relay connection method is executed by a first terminal device, and includes: sending first indication information to a second terminal device, wherein the first indication information includes a candidate relay list, the candidate relay list includes an identifier of at least one candidate relay terminal device, and the at least one candidate relay terminal device is used to establish a relay connection between the first terminal device and the second terminal device.