Terminal Positioning Bandwidth Negotiation for Accurate Device Ranging
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Solution Overview
Problem
Inaccurate determination of bandwidth used for positioning between wireless communication devices leads to poor positioning accuracy.
Innovation Solution
A method involving terminal devices exchanging capability indication messages to negotiate and determine bandwidths supported for positioning, using bandwidth part identities and resource pool identities, and employing PC5 radio resource control or PC5-signalling protocols to enhance flexibility and accuracy of bandwidth determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If bandwidth determination is performed without considering device capabilities, then positioning can be performed, but positioning accuracy deteriorates due to inaccurate bandwidth determination
Solution Approach 1:
The patent applies preliminary action by having terminal devices exchange capability indication messages before positioning occurs. The first terminal device sends its bandwidth capability information in advance, allowing the second terminal device to determine an appropriate bandwidth for positioning signals that both devices can support, thereby ensuring accurate bandwidth determination before positioning takes place.
Solution Approach 2:
The patent implements feedback through the capability indication message mechanism. The first terminal device provides feedback about its bandwidth capabilities to the second terminal device, enabling the second device to adjust its positioning signal bandwidth accordingly. This feedback loop ensures that the bandwidth used for positioning accurately reflects the actual capabilities of the terminal devices involved.
2Adaptability or versatility
If a fixed bandwidth is used for positioning, then device complexity is reduced, but adaptability deteriorates because different devices have different bandwidth capabilities
Solution Approach 1:
The patent applies self-service by enabling terminal devices to autonomously determine their own bandwidth capabilities and communicate this information to other devices. Each device independently assesses its own bandwidth support and uses this information to negotiate positioning parameters, eliminating the need for complex centralized bandwidth management while achieving wide adaptability across different device types.
Data Source
AI summary
Positioning methods and communication devices are provided. In one positioning method, a first terminal device sends a capability indication message to a second terminal device, the capability indication message carries bandwidth indication information of the first terminal device, and the bandwidth indication information of the first terminal device represents a bandwidth supported by the first terminal device for positioning.