Sidelink Ranging Authorization for Resource and Interference Control
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Solution Overview
Problem
Existing wireless communication methods using sidelink ranging between terminals often lead to inefficient utilization of resources and channel interference due to unregulated terminal-initiated ranging.
Innovation Solution
Implementing a ranging authorization policy that indicates whether a terminal has permission to initiate ranging, reducing unauthorized ranging and resource occupation, and minimizing interference by authorizing terminals based on their capabilities and business requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If terminals frequently initiate ranging to determine relative positioning, then positioning accuracy is improved, but wireless resource utilization deteriorates
Solution Approach 1:
The system changes the parameter of ranging initiation from terminal-autonomous to network-controlled by introducing a ranging authorization policy. The network side determines whether terminals can initiate ranging based on current system conditions, transforming the decision-making parameter from terminal side to network side, thereby resolving the contradiction between positioning accuracy and resource occupation
Solution Approach 2:
The network side provides feedback to terminals through the ranging authorization policy, indicating whether ranging initiation is permitted. This feedback mechanism allows terminals to adjust their ranging behavior according to network conditions, preventing excessive ranging initiation while maintaining positioning accuracy when needed
2Adaptability or versatility
If terminals initiate ranging at any time to support direct communication, then communication flexibility is improved, but channel interference worsens
Solution Approach 1:
The system applies preliminary anti-action by having the network side preemptively control ranging initiation through authorization policies. By preventing unauthorized ranging initiation before interference occurs, the system eliminates channel interference while maintaining communication flexibility through authorized ranging operations
Solution Approach 2:
The network side acts as an intermediary between terminals, mediating ranging initiation through authorization policies. This intermediary controls when terminals can initiate ranging, balancing communication flexibility with interference prevention by allowing ranging only when appropriate
Data Source
AI summary
Embodiments of the present disclosure provide a communication method, which is applied in a terminal, and includes: receiving a ranging authorization policy, the ranging authorization policy at least indicating: whether the terminal has measurement ranging permission. A ranging authorization policy may be at least one of a permission indication, indicating at least the ranging permission, a business indication, indicating at least a ranging-related business, or an indication for a first effective time, indicating an effective time of the ranging authorization policy.