M-Geocast: Robust and Energy-Efficient Geometric Routing for Mobile Sensor Networks

Authors:
Lynn Choi;Jae Kyun Jung;Byong-Ha Cho;Hyohyun Choi
Affiliations:
Korea University, Anam-Dong, Sungbuk-Ku, Seoul, Korea;Korea University, Anam-Dong, Sungbuk-Ku, Seoul, Korea;Korea University, Anam-Dong, Sungbuk-Ku, Seoul, Korea;u-Convergence Laboratory, Samsung Electronics Co., Ltd,
Venue:
SEUS '08 Proceedings of the 6th IFIP WG 10.2 international workshop on Software Technologies for Embedded and Ubiquitous Systems
Year:
2008

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Abstract

In this paper we investigate a practical routing solution for a new class of wireless sensor networks where any node can be mobile anytime. Assuming GPS-enabled sensor nodes we propose a new geometric routing protocol called M-Geocast that is designed to efficiently support node mobility as well as location service for such mobile sensor networks. Unlike existing geometric routing schemes, M-Geocast can also discover a non-geometric path to the destination by exploiting the path history of location updates. Thus, the routing void can be minimized by alternating the two. In addition, M-Geocast employs two location-based optimizations to further reduce the overhead of on-demand route discovery on inevitable routing voids. Through detailed NS-2 simulations we demonstrate that M-Geocast can not only increase network performance but can also reduce energy consumption compared to the existing protocols based on on-demand route discovery or a plain geometric routing.