TITLE:
New Localization Technique for Mobile Wireless Sensor Networks Using Sectorized Antenna
AUTHORS:
Ahmed M. Khedr
KEYWORDS:
Localization, Sectorized Antenna, Seed, Mobile Wireless Sensor Networks
JOURNAL NAME:
International Journal of Communications, Network and System Sciences,
Vol.8 No.9,
September
2,
2015
ABSTRACT: Recently, there has been much focus on
mobile sensor networks, and we have even seen the development of small-profile
sensing devices that are able to control their own movement. Although it has
been shown that mobility alleviates several issues relating to sensor network
coverage and connectivity, many challenges remain. Among these, the need for
position estimation is perhaps the most important. It is too expensive to
include a GPS receiver with every sensor node. Hence, localization schemes for
sensor networks typically use a small number of seed nodes that know their
location and protocols whereby other sensor nodes estimate their location from
the messages they receive. In this paper, we propose a new technique to
localize mobile sensor nodes using sectorized antenna. We consider that both
sensor nodes and seeds are mobile, and argue that mobility can be exploited to
improve the accuracy and precision of localization. It is tested extensively
in a simulation environment and compared with other existing methods. The
results of our experiments clearly indicate that our proposed approach can
achieve a high accuracy without need of high density of seeds.