Evaluations of a directional MAC protocol for ad hoc networks

被引：4

作者：

Nagashima, K ^{[1
]}

Takata, M ^{[1
]}

Watanabe, T ^{[1
]}

机构：

[1] Shizuoka Univ, Fac Informat, Shizuoka 422, Japan

来源：

24TH INTERNATIONAL CONFERENCE ON DISTRIBUTED COMPUTING SYSTEMS WORKSHOPS, PROCEEDINGS | 2004年

关键词：

D O I：

10.1109/ICDCSW.2004.1284105

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Many wireless ad hoc networks exploit MAC protocols with conventional omni-directional antennas. Smart antennas, however, improve performance by avoidance of radio interference and effective use of limited resources of mobile nodes. This paper proposes a MAC protocol using a directional beam form for ad hoc networks called SWAMP. SWAMP consists of two types of access modes, i.e., OC-mode and EC-mode, which are selected according to the relative position between a sender and a receiver. OC-mode forms a beam in the restricted area and uses omni-NAV shorter than an ordinary NAV to improve spatial utilization. In EC-mode, a higher gain and narrower beam is used to extend a transmission range. Moreover, SWAMP includes a method of obtaining information of neighbors indispensable for beam forming. Simulation results show the throughput advantages over omni-directional antennas.

引用

页码：678 / 683

页数：6