期刊名称：International Journal of Engineering and Computer Science
印刷版ISSN：2319-7242
出版年度：2014
卷号：3
期号：4
页码：5572-5574
出版社：IJECS
摘要：Multihop wireless relays can extend the area of network connectivity instantly and efficiently. However, due to thespatialdependence of wireless link-quality, the deployment of relay nodes requires extensive, expensive measurement, andmanagementefforts. This paper presents a mobile autonomous router system, (MARS) through which a relay router autonomouslyseeks andadjusts the best “reception” position for itself and cooperatively forms a string-type relay network with otherneighboring routers.Specifically, MARS 1) accurately characterizes spatial link-quality through a new measurement technique, 2)effectively probes/optimizes node positioning via a spatial probing algorithm, and 3) maintains error-tolerant position informationvia an inexpensivepositioning algorithm. MARS has been prototyped with both a commodity mobile robot and a wireless routerwith IEEE 802.11cards. Our experimental evaluation of both the MARS prototype and ns-2-based simulation show that MARSachieves an average of 95 percent accuracy in link-quality measurements, and reduces the measurement effort necessary for theoptimization of a node’slocation by two-thirds, compared to exhaustive spatial probing
