tailieunhanh - Báo cáo hóa học: " A New Strategy to Improve Proactive Route Updates in Mobile Ad Hoc 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: A New Strategy to Improve Proactive Route Updates in Mobile Ad Hoc Networks | EURASIP Journal on Wireless Communications and Networking 2005 5 828-837 2005 Mehran Abolhasan et al. A New Strategy to Improve Proactive Route Updates in Mobile Ad Hoc Networks Mehran Abolhasan Telecommunications and Information Technology Research Institute University of Wollongong NSW 2522 Australia Email mehran@ Tadeusz Wysocki Telecommunications and Information Technology Research Institute University of Wollongong NSW 2522 Australia Email wysocki@ Justin Lipman Telecommunications and Information Technology Research Institute University of Wollongong NSW 2522 Australia Email justin@. Received 12 January 2005 Revised 7 April 2005 Recommended for Publication by Phillip Regalia This paper presents two new route update strategies for performing proactive route discovery in mobile ad hoc networks MANETs . The first strategy is referred to as minimum displacement update routing MDUR . In this strategy the rate at which route updates are sent into the network is controlled by how often a node changes its location by a required distance. The second strategy is called minimum topology change update MTCU . In this strategy the route updating rate is proportional to the level of topology change each node experiences. We implemented MDUR and MTCU on top of the fisheye state routing FSR protocol and investigated their performance by simulation. The simulations were performed in a number of different scenarios with varied network mobility density traffic and boundary. Our results indicate that both MDUR and MTCU produce significantly lower levels of control overhead than FSR and achieve higher levels of throughput as the density and the level of traffic in the network are increased. Keywords and phrases MDUR MTCU proactive route updating MANETs routing GPS-based route updating. 1. INTRODUCTION Mobile ad hoc networks MANETs are made up of a number of nodes which are capable of performing routing without using a dedicated centralised .