An Opportunistic Directional MAC Protocol with Pulse/Tone Exchange in Wireless Ad-Hoc Networks

This paper proposes a Medium Access Control (MAC) protocol using directional antennas in wireless ad-hoc networks, which achieves frame-collision reduction, freezing-state duration reduction, and deafness-problem mitigation simultaneously. The idea of the proposed protocol is that Pulse/Tone exchang...

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Bibliographic Details
Published inWireless personal communications Vol. 111; no. 2; pp. 1187 - 1205
Main Authors Okazawa, Tetsuro, Ma, Jing, Komuro, Nobuyoshi, Choi, Youngjune, Li, Zhetao, Pei, Tingrui, Sekiya, Hiroo
Format Journal Article
LanguageEnglish
Published New York Springer US 01.03.2020
Springer Nature B.V
Subjects
Access control
Ad hoc networks
Collisions
Communications Engineering
Computer Communication Networks
Deafness
Directional antennas
Engineering
Exchanging
Freezing
Networks
Protocol
Protocol (computers)
Reduction
Signal,Image and Speech Processing
Switching theory
Wireless networks
MAC protocol
Hidden-node problem
Ad hoc networks
Narrow band signal
Directional antennas
Deafness problem
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Summary:This paper proposes a Medium Access Control (MAC) protocol using directional antennas in wireless ad-hoc networks, which achieves frame-collision reduction, freezing-state duration reduction, and deafness-problem mitigation simultaneously. The idea of the proposed protocol is that Pulse/Tone exchange is applied to the Opportunistic Directional MAC protocol (OPDMAC). By applying the Pulse/Tone exchange prior to Request to Send/Clear to Send (RTS/CTS) handshake, RTS-to-RTS frame collisions are reduced dramatically. Additionally, RTS-to-DATA frame collisions in the OPDMAC are changed to Pulse signal-to-DATA frame overlaps in the proposed protocol. This change makes the DATA-frame transmissions in success because the Pulse signal-to-DATA frame overlaps are regarded as a deafness problem. On that basis, the deafness-problem mitigation can be obtained in the proposed protocol by adaptive transmission-direction switching, which follows the OPDMAC technique. The freezing-state durations can be also reduced by the transmission-direction switching. As a result, the proposed protocol provides high network throughput compared with conventional protocols. Simulation results show the validity and effectiveness of the proposed protocol.
ISSN:0929-6212
1572-834X
DOI:10.1007/s11277-019-06908-8