tailieunhanh - Báo cáo hóa học: "Research Article A Random Ant-Like Unicast Routing Protocol for Wireless Ad Hoc Sensor Networks and Performance Evaluation"

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: Research Article A Random Ant-Like Unicast Routing Protocol for Wireless Ad Hoc Sensor Networks and Performance Evaluation | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID 648235 7 pages doi 2010 648235 Research Article A Random Ant-Like Unicast Routing Protocol for Wireless Ad Hoc Sensor Networks and Performance Evaluation Yang Qin Shenhao Liu and Jinlong Wang School of Computer Science and Technology Harbin Institute of Technology Shenzhen Graduate School Shenzhen 518055 China Correspondence should be addressed to Yang Qin yqin@ Received 12 February 2010 Accepted 12 June 2010 Academic Editor Jiangchuan Liu Copyright 2010 Yang Qin et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. A random ant-like unicast routing RAUR protocol is proposed for wireless ad hoc sensor networks. In RAUR when a source node needs to find a routing path to a destination it does not flood the network. Instead the source selects one of its neighbors to send out a route request packet. And the selected neighbor will also select one of its neighbors to forward the packet. The number of nodes to forward the searching message will be reduced. Hence it could help to save the energy. In addition the control overhead will be less. In this paper our approximated mathematical analysis shows that the successful rate in finding a path with only one attempt is considerably high. Our research also shows that the RAUR will get higher successful rate through the larger number of hops. We study the performance of the network using the proposed RAUR by simulation of Glomosim and compare it with the routing protocols DSR and AODV. The results show that RAUR could outperform in many metrics. 1. Introduction A wireless sensor network consists of a large number of tiny sensing devices deployed in a region of interest. Each has processing and wireless communication capabilities which .