Bayesian Method of Slotted Aloha Based Anti-Collision Protocol for RFID Systems

被引：7

作者：

Annur, Robithoh ^{[1
]}

Srichavengsup, Warakorn ^{[2
]}

Nakpeerayuth, Suvit ^{[3
]}

Wuttitsittikulkij, Lunchakorn ^{[3
]}

机构：

[1] Dept Comp & Commun Technol, Kuala Lumpur, Malaysia

[2] Thai Nichi Inst Technol, Bangkok, Thailand

[3] Chulalongkorn Univ, Dept Elect Engn, Bangkok 10330, Thailand

来源：

2015 IEEE 12TH INTERNATIONAL SYMPOSIUM ON AUTONOMOUS DECENTRALIZED SYSTEMS ISADS 2015 | 2015年

关键词：

Anti-collision protocol; Bayesian method; RFID; Slotted Aloha; FRAME LENGTH;

D O I：

10.1109/ISADS.2015.55

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

In multiple access systems, knowing the number of tags is crucial for the performance. The problem of multiple access in RFID system has one different assumption from general communication systems in that there is no new user (tag) entering during the conflict resolution interval. This can significantly reduce the uncertainty in number of tags estimation. This paper uses Bayesian method to update the posterior probability distribution of number of users after each slot in Aloha protocol for RFID system. The posterior probability distribution can adapt quickly to concentrate around the true value in few slots. The tag access probability for each slot can also be derived from this posterior distribution to maximize the success probability. The simulation result shows that the system can approach the theoretical limit of the Aloha system with known number of tags.

引用

页码：87 / 90

页数：4

共 8 条

[1]

Abramson N., 1970, Proceedings of the 1970 fall joint computer conference, P281, DOI 10.1145/1478462.1478502

[2] Accurate Tag Estimation for Dynamic Framed-Slotted ALOHA in RFID Systems [J].