Throughput analysis and improvement of hybrid multiple access in IEEE mmWave-WPAN

Authors:
Chang Woo Pyo;Hiroshi Harada;Shuzo Kato
Affiliations:
National Institute of Information and Communications Technology, Hikarino-oka, Yokosuka, Japan;National Institute of Information and Communications Technology, Hikarino-oka, Yokosuka, Japan;Tohoku University, Katahira, Aoba-ku, Sendai, Japan
Venue:
Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly
Year:
2009

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Abstract

This paper studies the throughput of IEEE mmWave-WPAN based on the hybrid multiple access of CSMA/CA and TDMA. To study the throughput, we make a novel analytical model for the hybrid multiple access. Our throughput analysis shows that the throughput is highly affected by the access time of CSMA/CA. A larger access time of CSMA/CA will cause a lower data transmission time in TDMA, while a lower access time of CSMA/CA will also cause a higher collision that leads to increase the unused time for data transmission. This paper provides the approximated optimum access time of CSMA/CA maximizing the throughput. Furthermore, this paper introduces a private channel release time method for reducing collisions that highly improves the throughput of the mmWave-WPAN.