A directional antennas-based dual mode MAC protocol for ad hoc networks

Author

Takata, Masanori ; Nagashima, Katsushiro ; Watanabe, Takashi

Author_Institution

Fac. of Inf., Shizuoka Univ., Japan

fYear

2004

fDate

2004

Firstpage

579

Lastpage

584

Abstract

Omni-directional antennas are usually used in most of the previous researches on wireless ad hoc networks. Smart antennas, however, may offer some benefits compared with them, i.e., enhancement of spatial reuse of the wireless channel and extension of the transmission range. We have proposed a MAC protocol called SWAMP, which consists of two access modes and uses four beamform patterns effectively, one mode mainly designed for spatial reuse of the wireless channel and the other mode mainly for extension of the communication area. This paper evaluates SWAMP through a random topology model with mobility and a grid topology model. The results show the protocol offers an improvement compared to the IEEE 802.11 DCF in terms of success ratio, throughput, delay and number of simultaneous communications.

Keywords

access protocols; ad hoc networks; adaptive antenna arrays; antenna radiation patterns; directive antennas; multifrequency antennas; network topology; telecommunication channels; beamform patterns; directional antennas; dual mode MAC protocol; grid topology model; omnidirectional antennas; random topology model; smart antennas; spatial reuse; wireless ad hoc networks; Access protocols; Ad hoc networks; Delay; Directive antennas; Media Access Protocol; Mobile ad hoc networks; Throughput; Topology; Transmitting antennas; Wireless application protocol;

fLanguage

English

Publisher

ieee

Conference_Titel

Performance, Computing, and Communications, 2004 IEEE International Conference on

Print_ISBN

0-7803-8396-6

Type

conf

DOI

10.1109/PCCC.2004.1395102

Filename

1395102