Delay-guaranteed multicast routing in multi-rate MANETs

Yu Hsun Chen, Gen Huey Chen, Chia Cheng Hu, Eric Hsiao Kuang Wu

研究成果: 書貢獻/報告類型會議論文篇章同行評審

6 引文 斯高帕斯(Scopus)


Since the multi-rate enhancements have been implemented in wireless ad hoc networks (MANETs), QoS-constrained multicast protocols for multimedia communication should be adapted to exploit them fully for using more efficiently the limited resources. To build a multicast tree with delay-guaranteed, one-hop delay and end-to-end delay must be known. The one-hop delay is the transmission time at a given link connecting two neighboring hosts, and the end-to-end delay is the time taken for a data packet from a specific source to reach the destination node. However, how to calculate the above two delays using the IEEE 802.11 MAC is still a challenging problem, because the radio channel is shared among neighbors. Further, the multi-rate enhancements make it more difficult since the neighboring relation among hosts is varied with the transmission rates. In this paper, we first propose a method to estimate the one-hop delay based on varied transmission rates by monitoring the sensed busy/idle ratio of shared channel. Then, by its aid, another method is proposed to compute the end-to-end delay. Finally, we integrate the above two methods with a typical multicast routing protocol, ODMRP, for constructing a delay-guaranteed multicast protocol. Simulation results show that the proposed method obtains more precise one-hop delay than a very recently work. Besides, the integrated protocol provides better delay guarantee than the existing protocol when the multicast traffic has delay requirement.

主出版物標題GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference
出版狀態已出版 - 2009
事件2009 IEEE Global Telecommunications Conference, GLOBECOM 2009 - Honolulu, HI, United States
持續時間: 30 11月 20094 12月 2009


名字GLOBECOM - IEEE Global Telecommunications Conference


???event.eventtypes.event.conference???2009 IEEE Global Telecommunications Conference, GLOBECOM 2009
國家/地區United States
城市Honolulu, HI


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