Optimization of MAC algorithm based on IEEE 802.15.4 in indoor positioning system

被引：0

作者：

Sun G. ^{[1
]}

Qin D. ^{[1
]}

Lan T. ^{[1
]}

机构：

[1] Key Laboratory of Electronic and Communication Engineering, Heilongjiang University, Harbin

来源：

High Technology Letters | 2021年 / 27卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Fingerprint identification; IEEE; 802.15.4; Indoor positioning; Medium access control (MAC) algorithm; Multi-channel;

D O I：

10.3772/j.issn.1006-6748.2021.01.011

中图分类号：

学科分类号：

摘要：

The mobility of the targets asks for high requirements of the locating speed in indoor positioning systems. The standard medium access control (MAC) algorithm will often cause lots of packet conflicts and high transmission delay if multiple users communicate with one beacon at the same time, which will severely limit the speed of the system. Therefore, an optimized MAC algorithm is proposed based on channel reservation to enable users to reserve beacons. A frame threshold is set to ensure the users with shorter data frames do not depend on the reservation mechanism, and multiple users can achieve packets switching with relative beacon in a fixed sequence by using frequency division multiplexing technology. The simulation results show that the optimized MAC algorithm proposed in this paper can improve the positioning speed significantly while maintaining the positioning accuracy. Moreover, the positioning accuracy can be increased to a certain extent if more channel resources can be obtained, so as to provide effective technical support for the location and tracking applications of indoor moving targets. Copyright © by HIGH TECHNOLOGY LETTERS PRESS.

引用

页码：86 / 94

页数：8

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