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.
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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Shintaro IKUMA, Zhetao LI, Tingrui PEI, Young-June CHOI, Hiroo SEKIYA, "Rigorous Analytical Model of Saturated Throughput for the IEEE 802.11p EDCA" in IEICE TRANSACTIONS on Communications,
vol. E102-B, no. 4, pp. 699-707, April 2019, doi: 10.1587/transcom.2018SEP0005.
Abstract: 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.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2018SEP0005/_p
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@ARTICLE{e102-b_4_699,
author={Shintaro IKUMA, Zhetao LI, Tingrui PEI, Young-June CHOI, Hiroo SEKIYA, },
journal={IEICE TRANSACTIONS on Communications},
title={Rigorous Analytical Model of Saturated Throughput for the IEEE 802.11p EDCA},
year={2019},
volume={E102-B},
number={4},
pages={699-707},
abstract={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.},
keywords={},
doi={10.1587/transcom.2018SEP0005},
ISSN={1745-1345},
month={April},}
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TY - JOUR
TI - Rigorous Analytical Model of Saturated Throughput for the IEEE 802.11p EDCA
T2 - IEICE TRANSACTIONS on Communications
SP - 699
EP - 707
AU - Shintaro IKUMA
AU - Zhetao LI
AU - Tingrui PEI
AU - Young-June CHOI
AU - Hiroo SEKIYA
PY - 2019
DO - 10.1587/transcom.2018SEP0005
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E102-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2019
AB - 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.
ER -