Processing Capability Broadcasts for Accurate Device Ranging
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Solution Overview
Problem
Existing ranging-based services face challenges in efficiently discovering and communicating with nearby devices capable of performing ranging-based services, as devices lack effective methods to determine processing capabilities and distances accurately.
Innovation Solution
A method and apparatus for broadcasting request and response messages to exchange processing capability information, allowing devices to determine distances and angles by calculating response times based on processing capability information, including identifiers and duration values to facilitate accurate ranging processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If devices broadcast and exchange processing capability information through request and response messages, then device discovery efficiency and ranging accuracy are improved, but communication overhead and message exchange complexity increase
Solution Approach 1:
The patent applies preliminary action by having devices broadcast their processing capability information (duration values and identifiers) in advance before ranging operations begin. This allows receiving devices to pre-evaluate compatibility and prepare for ranging, eliminating the need for complex real-time capability negotiation during the ranging process itself.
Solution Approach 2:
The patent introduces processing capability information (duration values and identifiers) as an intermediary element that mediates between devices. This intermediary carries essential capability data that enables automatic compatibility assessment and streamlined ranging initiation, reducing the need for complex direct device-to-device negotiation protocols.
2Measurement precision
If devices calculate distances and angles based on processing capability information and response times, then ranging precision is improved, but processing time and computational requirements increase
Solution Approach 1:
The patent changes the parameter basis for ranging from raw signal timing alone to a combination of processing capability information (duration values) and response times. By incorporating pre-broadcast capability parameters, the system achieves more precise distance and angle calculations that account for device-specific processing characteristics, reducing errors caused by varying device performance.
3Adaptability or versatility
If devices broadcast processing capability information to enable accurate ranging, then device compatibility assessment is improved, but information transmission overhead increases
Solution Approach 1:
The patent extracts only the essential processing capability parameters (duration values and identifiers) needed for compatibility assessment and broadcasts them separately from the main ranging protocol. This extraction approach provides sufficient information for device compatibility evaluation without transmitting unnecessary data, balancing completeness with efficiency.
Data Source
AI summary
Processing capability information methods are provided. In one method, a processing capability information request method performed by a first terminal includes broadcasting a first message. The first message carries request information, and the request information is configured to request for processing capability information of a second terminal that has received the request information.