A Testbed with a Practical Smart Antenna for Directional MAC Protocols in Ad hoc Networks

Author

Mitsuhashi, Hikaru ; Watanabe, Masahiro ; Obana, Sadao ; Bandai, Masaki ; Watanabe, Takashi

Author_Institution

Grad. Sch. of Inf., Shizuoka Univ., Hamamatsu

Volume

2

fYear

2007

fDate

21-23 May 2007

Firstpage

731

Lastpage

736

Abstract

Recently, several MAC protocols using directional antennas have been proposed for ad hoc networks, which are mainly evaluated by computer simulations. This paper develops a MAC protocol testbed called TRNC/ESPAR for ad hoc networks, which enables the evaluation of directional MAC protocols as well as omni-directional protocols. At first, we investigate the requirements for the testbed. Based on them, TRNC/ESPAR is designed to consist of ESPAR as a practical smart antenna, IEEE 802.15.4 as a wireless module, GPS and gyro modules to support a location dependant MAC. After describing the detail design, we investigate the basic performance of the testbed and implement CSMA/CA. Implementing one of directional MAC protocols with 4 nodes, DMAC shows that the protocol doubles the throughput compared with CSMA/CA because of SDMA effect but if the pair is too near DMAC throughput degraded in a real environment, which could not be found without the testbed.

Keywords

access protocols; ad hoc networks; adaptive antenna arrays; directive antennas; ad hoc networks; directional MAC protocols; directional antennas; omni-directional protocols; practical smart antenna; Ad hoc networks; Computer simulation; Degradation; Directional antennas; Directive antennas; Global Positioning System; Media Access Protocol; Multiaccess communication; Testing; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Information Networking and Applications Workshops, 2007, AINAW '07. 21st International Conference on

Conference_Location

Niagara Falls, Ont.

Print_ISBN

978-0-7695-2847-2

Type

conf

DOI

10.1109/AINAW.2007.59

Filename

4224191