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Vol. 157, Issue 10, October 2013, pp. 160-167




A Lower-Cost Minimal Relay Tree Algorithm for Wireless Mesh Networks
1 Ting T. LIU, 1,2 Wei YANG, 3 Yu Z. WANG

1 School of Electronic and Information Engineering, Beijing Jiaotong University, 100044, Beijing, China

2 National Mobile Communications Research Laboratory, Southeast University, Nanjing, China

3 Department of Aviatic Information System, North China Institute of Computing Technology, 100083, Beijing, China

1 E-mail: 09111040@bjtu.edu.cn


Received: 11 July 2013   /Accepted: 25 September 2013   /Published: 31 October 2013

Digital Sensors and Sensor Sysstems


Abstract: In order to improve the performance of multicast tree in wireless mesh networks and reduce the total cost of multicast tree, a Lower-Cost Minimal Relay Tree (LCMRT) algorithm for wireless mesh networks is proposed based on MCM (Multichannel Multicast) and DDSP (Destination-Driven Fast Lower-Cost Shortest Path tree). The algorithm selects the lower-cost path for data delivery on the condition of minimal relay nodes which reduces the end-to-end delay. At the same time, a more precise parameter of interference degree is introduced which decreases the interference between links and improves the system throughput. The algorithm analysis and simulation results show that LCMRT performs better than DDSP in computational efficiency. The total cost and delay of LCMRT are reduced by 13.33 % and 6.15 % respectively and the system throughput of LCMRT is improved by 4.29 % compared to MCM.


Keywords: Wireless Mesh Network, Multicast, Minimal Relay Tree, Lower-cost.


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