tailieunhanh - Báo cáo hóa học: " Energy-Aware Routing Protocol for Ad Hoc Wireless Sensor Networks"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Energy-Aware Routing Protocol for Ad Hoc Wireless Sensor Networks | EURASIP Journal on Wireless Communications and Networking 2005 5 635-644 2005 Raminder P. Mann et al. Energy-Aware Routing Protocol for Ad Hoc Wireless Sensor Networks Raminder P. Mann Department of Electrical and Computer Engineering Wichita State University Wichita KS 67260 USA Email rpmann@ Kamesh R. Namuduri Department of Electrical and Computer Engineering Wichita State University Wichita KS 67260 USA Email Ravi Pendse Department of Electrical and Computer Engineering Wichita State University Wichita KS 67260 USA Email Received 15 June 2004 Revised 15 April 2005 Wireless ad hoc sensor networks differ from wireless ad hoc networks from the following perspectives low energy lightweight routing protocols and adaptive communication patterns. This paper proposes an energy-aware routing protocol EARP suitable for ad hoc wireless sensor networks and presents an analysis for its energy consumption in various phases of route discovery and maintenance. Based on the energy consumption associated with route request processing EARP advocates the minimization of route requests by allocating dynamic route expiry times. This paper introduces a unique mechanism for estimation of route expiry time based on the probability of route validity which is a function of time number of hops and mobility parameters. In contrast to AODV EARP reduces the repeated flooding of route requests by maintaining valid routes for longer durations. Keywords and phrases ad hoc networks routing protocols mobility models. 1. INTRODUCTION Wireless sensors are small devices with limited energy without energy backup they are more of one-time-use sensors. Therefore an energy-efficient routing mechanism would mean longer sensor lifetime and higher network efficiency. Active research is going on in the field of routing in ad hoc sensor networks. A lot of development has been seen in ad hoc routing since the introduction of highly dynamic .