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IEICE TRANSACTIONS on Communications

Rigorous Analytical Model of Saturated Throughput for the IEEE 802.11p EDCA

Shintaro IKUMA, Zhetao LI, Tingrui PEI, Young-June CHOI, Hiroo SEKIYA

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Summary :

The IEEE 802.11p Enhanced Distributed Channel Access (EDCA) is a standardization for vehicle-to-vehicle and road-to-vehicle communications. The saturated throughputs of the IEEE 802.11p EDCA obtained from previous analytical expressions differ from those of simulations. The purpose of this paper is to explain the reason why the differences appear in the previous analytical model of the EDCA. It is clarified that there is a special state wherein the Backoff Timer (BT) is decremented in the first time slot of after a frame transmission, which cannot be expressed in the previous Markov model. In addition, this paper proposes modified Markov models, which allow the IEEE 802.11p EDCA to be correctly analyzed. The proposed models describe BT-decrement procedure in the first time slot accurately by adding new states to the previous model. As a result, the proposed models provide accurate transmission probabilities of network nodes. The validity of the proposed models is confirmed by the quantitative agreements between analytical predictions and simulation results.

Publication
IEICE TRANSACTIONS on Communications Vol.E102-B No.4 pp.699-707
Publication Date
2019/04/01
Publicized
2018/10/15
Online ISSN
1745-1345
DOI
10.1587/transcom.2018SEP0005
Type of Manuscript
Special Section PAPER (Special Section on Sensing, Wireless Networking, Data Collection, Analysis and Processing Technologies for Ambient Intelligence with Internet of Things)
Category

Authors

Shintaro IKUMA
  Chiba University
Zhetao LI
  Xiangtan University
Tingrui PEI
  Xiangtan University
Young-June CHOI
  Ajou University
Hiroo SEKIYA
  Chiba University

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