Broadcast Terminal Selection for Low-Conflict RFID Identification
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Solution Overview
Problem
The existing RFID communication systems face inefficiencies in identifying multiple tags due to conflicts during the inventory process, particularly when the coverage of the base station increases, leading to the need for more efficient identification methods.
Innovation Solution
A communication method involving broadcast messages that include terminal selection information and resource indication, allowing terminals to respond only if they match the selection criteria and send messages on designated resources, thereby reducing conflicts and enhancing identification efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the base station increases its coverage area to identify more terminals, then the quantity of terminals identified increases, but the conflict during inventory process increases
Solution Approach 1:
The patent segments the inventory process into multiple phases: a broadcast phase where the base station sends broadcast messages containing selection information, and a response phase where terminals send response messages on designated resources. This segmentation allows the base station to identify more terminals by dividing the identification process into manageable stages, reducing conflicts that would occur in a single-phase inventory process.
Solution Approach 2:
The patent applies preliminary action by having the base station send broadcast messages with terminal selection information before terminals respond. The broadcast message预先 specifies which terminals should respond and on what resources, allowing terminals to prepare their response in advance. This preliminary selection and resource allocation reduces terminal conflicts during the actual response phase.
2Productivity
If traditional inventory commands are used to identify terminals, then the process is simple, but the identification efficiency is low
Solution Approach 1:
The patent makes the broadcast message multi-functional by incorporating both terminal selection information and resource indication information in a single message. This allows the base station to simultaneously select which terminals should respond and designate the resources they should use, consolidating multiple functions into one communication step and improving identification efficiency without proportionally increasing complexity.
Solution Approach 2:
The patent implements feedback by having terminals send response messages back to the base station after receiving the broadcast message. The response messages contain terminal information that confirms selection and provides feedback to the base station. This feedback mechanism enables the base station to verify terminal identification and adjust subsequent operations, significantly improving identification efficiency.
Data Source
AI summary
Provided are a communication method and apparatus, a communication node and a storage medium. The communication method includes: sending a first broadcast message to a terminal, where the first broadcast message includes at least one of the following: a message type, terminal selection information or resource indication information; and receiving a response message, which is sent by one or more target terminals and in response to the first broadcast message, on a resource indicated by the resource indication information, where the response message includes at least one of the following: a message type or terminal information.