Title: Saturation throughput analysis of IEEE 802.11 DCF with heterogeneous node transmit powers and capture effect

Authors: Lei Lei; Ting Zhang; Liang Zhou; Xiaoqin Song; Shengsuo Cai

Addresses: Jiangsu Key Laboratory of Internet of Things and Control Technologies, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China ' Jiangsu Key Laboratory of Internet of Things and Control Technologies, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China ' College of Telecommunications and Information Engineering, Nanjing University of Posts & Telecommunications, Nanjing 210023, China ' Jiangsu Key Laboratory of Internet of Things and Control Technologies, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China ' Jiangsu Key Laboratory of Internet of Things and Control Technologies, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Abstract: The transmit power control schemes allow the wireless nodes to select a minimum required transmit power from all available power levels to access the medium. In this paper, we focus on analysing the saturation throughput performance of IEEE 802.11 DCF networks with heterogeneous node transmit power levels and the capture effect. We first analyse the capture effect among packets sent at different power levels and derive the analytical expression of the capture probability. Then, we propose a three-dimensional Markov chain to model the backoff procedure performed by a tagged sending node under the condition of heterogeneous transmit power levels, and compute the total saturation throughput of the network with the previously derived capture probability. Finally, we validate the accuracy of our model by comparing the analytical results with the simulation results, and analyse the impact of the capture effect on the saturation throughput performance of IEEE 802.11 DCF networks.

Keywords: IEEE 802.11 DCF networks; heterogeneous power levels; capture effects; saturation throughput; Markov chain.

DOI: 10.1504/IJAHUC.2017.085716

International Journal of Ad Hoc and Ubiquitous Computing, 2017 Vol.26 No.1, pp.1 - 11

Available online: 27 Jun 2017 *

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