MR2_ODMRP: Improvement of End-to-End Transmission Delay in Wireless Multicast Routing

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• 作者：Kyoung Jin Oh (1)
  Chae Y. Lee (1)
  
• 关键词：Multi ; radio ; Multi ; rate ; Multicast routing protocol ; Routing metric ; Integer linear programming ; Wireless mesh network
• 刊名：Wireless Personal Communications
• 出版年：2014
• 出版时间：January 2014
• 年：2014
• 卷：74
• 期：2
• 页码：245-257
• 全文大小：537 KB
• 作者单位：Kyoung Jin Oh (1)
  Chae Y. Lee (1)
  
  1. Department of Industrial and Systems Engineering, KAIST, 291 Daehakro, Yusung Gu, Taejon, 305-701, Korea
  
• ISSN：1572-834X

文摘

With recent advances in wireless technology, the importance of the capability to use multiple transmission rates and multiple radios has been widely recognized. In this paper, multi-rate and multi-radio (MR2) characteristics are exploited to improve end-to-end transmission delay for reliable multicasts. To achieve this goal, maximum potential rate based on multiple rates and radio based transmission delay with a different number of available radios are investigated in the construction of multicast routes. Multi-rate multi-radio on-demand multicast routing protocol (MR2_ODMRP), a protocol that makes ODMRP suitable for a MR2 environment, is proposed. An integer linear programming model is proposed to obtain the optimal tree as well as the rate and radios at each node of the tree for each multicast service. The solution is employed to evaluate the performance of the MR2_ODMRP. From the simulation, it is shown that the MR2_ODMRP produces nearly optimal solutions even in environments with a large number of nodes. It outperforms the ODMRP in wireless mesh networks. The end-to-end transmission delay is improved by a factor of four compared to the ODMRP.