Authors: Ivan Stojmenovic, Dandan Liu, Xiaohua Jia
Addresses: Department of Electronic, Electrical and Computer Engineering, The University of Birmingham, Birmingham B15 2TT, UK; SITE, University of Ottawa, Canada. ' Computer School, Wuhan University, Wuhan, China. ' Department of Computer Science, City University, Hong Kong, Kowloon, PR China; Computer School, Wuhan University, Wuhan, China
Abstract: Location service provides position of mobile destination to source node so that position-based routing can be applied. Previous location service protocols suffer from partial flooding overhead, and/or location failure in group movement scenarios. To overcome those deficiencies, we propose a quorum-based location service. The basic idea is that destination node registers its location along a |column| to form an update quorum. Source node makes a query along a |row| to form a search quorum. The destination location is detected at the intersection between the update and search quorums. The overhead of each routing task, including location service, is O(√n), where n is the number of nodes in the network. Four strategies are proposed to adjust the quorum system and improve it|s performance. To guarantee the success of location retrieval, both search and update quorums are extended by face routing which traverses outer boundary of the network. The simulation results show that our proposed location service has high success rate and good scalability.
Keywords: location service; quorum; ad hoc networks; sensor networks; simulation.
International Journal of Communication Networks and Distributed Systems, 2008 Vol.1 No.1, pp.71 - 94
Published online: 18 Feb 2008 *Full-text access for editors Access for subscribers Purchase this article Comment on this article