A new MAC protocol for reducing effect of needless transmission deferment induced by missed RTS/CTS handshake

Issue title: Advances in Wireless Networks

Article type: Research Article

Authors: Shigeyasu, Tetsuya | Inoue, Daishi | Matsuno, Hiroshi | Morinaga, Norihiko

Affiliations: Faculty of Engineering, Hiroshima International University | Graduate School of Socio-Infrastructural Technologies, Hiroshima International University | Graduate School of Science and Engineering, Yamaguchi University

Abstract: IEEE802.11DCF employs RTS/CTS (Request To Send/Clear To Send) mechanism for mitigating effect of hidden terminals. The RTS/CTS mechanism sets transmission deferral timer to neighbor terminals by exchanging RTS and CTS between transmitter and receiver. Then, in the case that RTS/CTS exchange succeeds, effect of hidden terminals could be suppressed, otherwise, any neighbor which received RTS and/or CTS defers its new transmission needlessly although DATA packet corresponding to the previous RTS/CTS exchange will not be transmitted. In this paper, we propose Cancel CTS, procedure in order to cope with the unnecessarily transmission deferment. Results of computer simulation confirms that our method well improves the throughput performance of IEEE802.11DCF.

DOI: 10.3233/MIS-2009-0070

Journal: Mobile Information Systems, vol. 5, no. 1, pp. 21-32, 2009