Relay Determination for Wireless Terminal Arrays
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Solution Overview
Problem
In large terminal arrays, the distance between terminals can lead to significant path loss and reduced signal-to-noise ratios, compromising information transmission reliability.
Innovation Solution
A relay determining method and apparatus that categorize terminals based on link quality, allowing first-type terminals to forward data to second-type terminals, thereby reducing the distance data needs to travel and enhancing signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals in a large terminal array communicate directly over long distances, then the array can be maintained with fewer relay nodes, but path loss increases and signal-to-noise ratio decreases, reducing transmission reliability
Solution Approach 1:
The patent introduces intermediate relay terminals between the first terminal and second terminals. These relay terminals act as mediators to forward data, thereby reducing the direct transmission distance and path loss. The relay terminal determines link qualities and establishes routing paths, improving signal-to-noise ratio and transmission reliability without requiring all terminals to communicate directly over long distances.
2Device complexity
If all second terminals directly receive data from the first terminal, then the system structure is simple, but the transmission distance is long causing large path loss and low signal-to-noise ratio
Solution Approach 1:
The patent introduces intermediate relay terminals between the first terminal and second terminals. These relay terminals act as mediators to forward data, thereby reducing the direct transmission distance and path loss. The relay terminal determines link qualities and establishes routing paths, improving signal-to-noise ratio and transmission reliability without requiring all terminals to communicate directly over long distances.
3Measurement precision
If the second terminal measures the quality of all links to determine its type, then the link quality determination is comprehensive, but the relay determining process becomes time-consuming and inefficient
Solution Approach 1:
The patent extracts and performs link quality measurements at the relay terminal rather than requiring each second terminal to measure all links. The relay terminal集中 measures link qualities between terminals and generates routing information, which is then distributed to second terminals. This extraction of the measurement function to a dedicated relay node reduces the measurement burden on individual terminals while maintaining comprehensive link quality assessment.
Solution Approach 2:
The relay terminal performs preliminary link quality measurements and generates routing information before data transmission occurs. By pre-determining the qualities of links and establishing routing paths in advance, the system avoids time-consuming measurements during actual data transmission, thereby improving relay determining efficiency while maintaining measurement precision.
Data Source
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AI summary
A relay determining method and apparatus are provided. The method is applied to a first terminal, and includes: sending a first message to a second terminal, where the first message is used to instruct the second terminal to determine a type of the second terminal based on the first message; and when the second terminal is a first-type terminal, the first-type terminal sends first measurement information; or when the second terminal is a second-type terminal, the second-type terminal receives first measurement information sent by a first-type terminal, determines quality of a first link between the first-type terminal and the second-type terminal, and sends the quality of the first link to the first terminal, where the second terminal is any terminal except the first terminal; receiving the quality of the first link sent by the second-type terminal; determining a mapping relationship between the first-type terminal and the second-type terminal based on the quality of the first link; and sending the mapping relationship to terminals corresponding to the mapping relationship, where the mapping relationship is used to instruct the first-type terminal corresponding to the mapping relationship to forward data to the second-type terminal corresponding to the mapping relationship. In embodiments of the present invention, information transmission reliability can be improved.