To reduce energy consumption, in most MAC protocols for wireless sensor networks, listen-sleep cycles are adopted. However, even though it is a good solution for energy efficiency, it may introduce a large end-to-end delay due to sleep delay, since a node with a packet to transmit should wait until the next-hop node of the packet awakes. To resolve this issue, in this paper, we propose the Average Velocity-Based Routing (AVR) protocol for wireless sensor networks that aims at reducing the end-toend delay. The AVR protocol is a kind of a geographic routing protocol that considers both location of a node and waiting time of a packet at the MAC layer. When a node can use information of n-hop away neighbor nodes, it calculates the n-hop average velocity for each of its one-hop neighbor nodes and forwards a packet to the neighbor node that has the highest n-hop average velocity. Simulation results show that as the knowledge range, n, increases, the average end-to-end delay decreases.
Bibliographical noteFunding Information:
Manuscript received April 17, 2009. The associate editor coordinating the review of this letter and approving it for publication was N. Nikolaou. This work was financially supported by a grant from the Strategic Technology Development Program (Project No. 10033869) of the Ministry of Knowledge Economy (MKE) of Korea. S.-C. Choi is with the Communication Lab., Samsung Advanced Institute of Technology, Yongin, Korea. S.-L. Gong and J.-W. Lee are with the Dept. of Electrical and Electronic Engineering, Yonsei University, Seoul, Korea (e-mail: email@example.com). Digital Object Identifier 10.1109/LCOMM.2009.090911
All Science Journal Classification (ASJC) codes
- Modelling and Simulation
- Computer Science Applications
- Electrical and Electronic Engineering