Terminal Selection via Ranging in Mobile Communications
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Solution Overview
Problem
Current technologies lack a solution for using ranging technology to select suitable terminals for data collection in mobile communications, particularly in scenarios requiring terminals in different directions from a reference terminal.
Innovation Solution
A terminal selection method and apparatus that involves a first node receiving a request message with a terminal selection policy, triggering a first terminal to perform ranging processes for multiple terminals, selecting terminals based on the ranging results and policy, and sending the selected terminal identities back to the requesting node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ranging results are exposed to the second node for terminal selection, then terminal selection accuracy is improved, but security is worsened due to excessive information exposure
Solution Approach 1:
The first node acts as an intermediary between the ranging process and the second node. It performs the ranging measurements locally and provides only the selection result to the second node, rather than exposing the raw ranging results. This mediator approach maintains selection accuracy while protecting sensitive information.
Solution Approach 2:
The patent extracts only the essential selection outcome from the ranging process, separating it from the detailed ranging results. The second node receives merely the terminal selection decision without accessing the underlying ranging data, thus obtaining necessary information while minimizing security risks.
2Measurement precision
If the first node performs ranging processes for multiple terminals and provides detailed ranging results, then terminal selection precision is improved, but signaling overhead is worsened
Solution Approach 1:
The patent extracts only the essential selection outcome from the ranging process, separating it from the detailed ranging results. The second node receives merely the terminal selection decision without accessing the underlying ranging data, thus obtaining necessary information while minimizing signaling overhead.
Solution Approach 2:
Instead of the conventional approach where the second node requests detailed ranging results and processes them for selection, the patent inverts the workflow: the first node autonomously performs ranging and makes the selection decision, then provides only the result to the second node. This inversion significantly reduces signaling overhead while maintaining selection precision.
Data Source
AI summary
Embodiments of this application provide a terminal selection method and apparatus, and a communications device. The method includes: receiving, by a first node, a first request message sent by a second node, where the first request message includes a terminal selection policy, and the first request message is used to trigger a first terminal to perform ranging processes for a plurality of terminals, to obtain ranging results corresponding to the plurality of terminals; selecting, by the first node, at least one terminal from the plurality of terminals based on the ranging results corresponding to the plurality of terminals and the terminal selection policy; and sending, by the first node, a first request reply message to the second node, where the first request reply message includes a terminal identity of the at least one terminal.