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Anti-collision resource adaptive allocation and dynamic re-competition method for rfid mobile readers

A resource competition and reader technology, applied in the field of radio frequency communication, can solve the problems of large communication resource occupation and low efficiency of identification tags, and achieve the effect of maximizing efficiency and efficient utilization

Active Publication Date: 2022-05-17
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low identification tag efficiency and large ineffective occupancy of communication resources by readers in the prior art reader network, the present invention provides a method for self-adaptive allocation and dynamic re-competition of anti-collision resources for RFID mobile readers

Method used

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  • Anti-collision resource adaptive allocation and dynamic re-competition method for rfid mobile readers

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Embodiment 1

[0031] Such as figure 1 As shown, the RFID mobile reader anti-collision resource adaptive allocation and dynamic re-competition method includes three consecutive stages executed in sequence in each round, which are the recognition time estimation stage, the global communication resource competition stage and the local communication resource competition stage. re-competition stage;

[0032] Identification time estimation stage: each RFID mobile reader first estimates the number of tags within the identification range, thereby estimating the total time for identifying all electronic tags within the identification range;

[0033] Global communication resource competition stage: Under the condition that the rotation training server broadcasts the synchronization signal, the RFID mobile readers compete for resources through the competition communication resource rules, the RFID mobile readers that successfully compete for resources identify tags, and the RFID mobile readers that fa...

Embodiment 2

[0047] Such as figure 1 , figure 2 , image 3 , Figure 4 as well as Figure 5 as shown, figure 1 It is a frame diagram of the anti-collision algorithm of the reader in this embodiment, and the reader works uniformly under the synchronization signal of the server. When the reader receives the round start signal sent by the server, each reader estimates the time required to identify all tags within the identification range. Then, the server sends out a competition synchronization signal, and the readers enter the competition state. The readers that succeed in the competition recognize the tags, and the readers that fail the competition sleep, waiting to be activated. After the server sends the last synchronization signal, it enters the re-competition configuration stage of local communication resources, and initializes the re-competition priority of the dormant reader. The re-competition priority is divided into 3 levels. When the number of blocking signals received is ...

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Abstract

The invention discloses a method for self-adaptive allocation and dynamic re-competition of anti-collision resources of an RFID mobile reader. The method includes a recognition time estimation stage, a global communication resource competition stage and a local communication resource re-competition configuration stage. The present invention starts from the perspective of optimal allocation of communication resources of RFID readers. The RFID reader acquires and releases communication resources according to the number of RFID tags within the identification range, so as to realize efficient utilization of communication resources and maximize the RFID reader network identification. label efficiency.

Description

technical field [0001] The invention relates to the field of radio frequency communication, and more specifically, to a method for self-adaptive allocation and dynamic re-competition of anti-collision resources of RFID mobile readers. Background technique [0002] Radio Frequency Identification (RFID) is one of the important technologies supporting the development of the Internet of Things, and is widely used in logistics and warehousing, public services, smart cities and other industries. In an RFID system, it often includes multiple RFID mobile readers (referred to as readers) and multiple RFID electronic tags (referred to as tags). When multiple readers identify tags, it may be because the readers use the same communication resources that the readers that identify the tags interfere with each other, resulting in the failure of the readers to identify the tags. This phenomenon is called reader collision, and reader collision seriously limits the efficiency of reader netwo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K7/10
Inventor 李中华何冠男
Owner SUN YAT SEN UNIV