Paper Info
Title
An Opportunistic Directional MAC Protocol with Pulse/Tone Exchange in Wireless Ad-Hoc Networks
Abstract
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.
Year
DOI
Venue
2020
10.1007/s11277-019-06908-8
Wireless Personal Communications
Keywords
DocType
Volume
Ad hoc networks, MAC protocol, Directional antennas, Hidden-node problem, Deafness problem, Narrow band signal
Journal
111
Issue
ISSN
Citations 
2
0929-6212
0
PageRank 
References 
Authors
0.34
0
7
Name
Order
Citations
PageRank
Tetsuro Okazawa100.34
Jing Ma200.34
Nobuyoshi Komuro36010.11
Young-June Choi421523.16
Zhetao Li541938.45
Tingrui Pei64614.75
Hiroo Sekiya726144.66