Relay Session Attribute Matching for Out-of-Coverage Communication
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Solution Overview
Problem
The challenge of selecting an appropriate relay device for a remote device outside network coverage or with poor signal quality, which affects communication efficiency in mobile communication systems.
Innovation Solution
A communication method where a remote device sends a required session attribute or identification information to a relay device, allowing the relay device to determine its suitability, and the remote device selects a relay device that meets the required session attributes to improve communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If relay device selection is performed without session attribute matching, then device complexity is reduced, but communication efficiency deteriorates
Solution Approach 1:
The patent applies preliminary action by having relay devices pre-obtain and store their allowed session attributes before remote devices need to select them. This allows relay devices to be pre-evaluated for compatibility, so when a remote device needs relay services, it can quickly match its required session attributes against the pre-available relay capabilities without complex real-time negotiations, thus improving communication efficiency while keeping the selection process relatively simple.
Solution Approach 2:
The patent implements feedback by having relay devices send their allowed session attribute information back to remote devices in advance. This feedback mechanism allows remote devices to make informed selection decisions based on known relay capabilities rather than trial-and-error approaches, improving efficiency by avoiding incompatible relay selections and reducing the complexity of iterative selection processes.
2Reliability
If session attribute matching is implemented for relay selection, then communication performance is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential session attribute information needed for relay selection compatibility checking, rather than transmitting complete device configurations or all possible session parameters. By taking out only the relevant allowed session attributes that determine relay suitability, the patent ensures reliable matching while minimizing the amount of signaling data that needs to be exchanged between devices.
Solution Approach 2:
The patent applies local quality by having each relay device maintain and advertise its specific allowed session attributes locally, rather than requiring centralized management or global configuration. This allows remote devices to perform local compatibility assessments by comparing their required session attributes against the locally-available relay capabilities, ensuring communication performance through accurate matching while reducing overall signaling overhead by eliminating the need for centralized attribute management.
Data Source
AI summary
The present disclosure relates to communication methods and communication apparatus. In one example method, a remote device obtains a first required session attribute or identification information of the first required session attribute, and sends a first message including the first required session attribute or the identification information of the first required session attribute.