Distributed power control for enhanced spatial reuse in CSMA/CA based wireless networks

Minseok Kim; Sungjin Shin; Jong Moon Chung

doi:10.1109/TWC.2014.2314641

Distributed power control for enhanced spatial reuse in CSMA/CA based wireless networks

Minseok Kim, Sungjin Shin, Jong Moon Chung

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Exposed terminals are critical performance degrading factors in wireless networks adopting carrier sense multiple access with collision avoidance (CSMA/CA). The objective of this paper is to minimize the exposed terminals and enhance spatial reuse. Therefore, an analytical model is provided to show how much gain can be obtained by resolving the exposed sender (EXS) and exposed receiver (EXR) problems in terms of capacity and delay. It is shown that resolving EXS and EXR both outperform the conventional CSMA/CA significantly. In addition, a transmission power control scheme that can jointly address the hidden and exposed terminal problem is introduced. Results demonstrate that the proposed scheme outperforms the other schemes in terms of spatial reuse, power consumption, and thus, the overall throughput and energy efficiency improves.

Original language	English
Article number	6781591
Pages (from-to)	5015-5027
Number of pages	13
Journal	IEEE Transactions on Wireless Communications
Volume	13
Issue number	9
DOIs	https://doi.org/10.1109/TWC.2014.2314641
Publication status	Published - 2014 Sep 1

All Science Journal Classification (ASJC) codes

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

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abstract = "Exposed terminals are critical performance degrading factors in wireless networks adopting carrier sense multiple access with collision avoidance (CSMA/CA). The objective of this paper is to minimize the exposed terminals and enhance spatial reuse. Therefore, an analytical model is provided to show how much gain can be obtained by resolving the exposed sender (EXS) and exposed receiver (EXR) problems in terms of capacity and delay. It is shown that resolving EXS and EXR both outperform the conventional CSMA/CA significantly. In addition, a transmission power control scheme that can jointly address the hidden and exposed terminal problem is introduced. Results demonstrate that the proposed scheme outperforms the other schemes in terms of spatial reuse, power consumption, and thus, the overall throughput and energy efficiency improves.",

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