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2006 the IET International Conference on Wireless Mobile & Multimedia Networks

作者： Bing Jiang Xue-Wu Zhang Shi-Zhi Chen Ping Yan Zi-Jiang Hu Hohai university (Changzhou) Jiangsu province China Anphenol-tuchel Electronics GmbH China Branch Jiangsu province China Changzhou institute of technology

＜正＞This paper addresses the QOS routing, key technology to provide differential services and utilize the whole resource effectively for wireless sensor networks. Based on the analyzing of QOS routing for wireless sensor networks, a new distributed QOS routing algorithm, according to the minimum node energies simulation model, is presented. Using opnet we make some simulation of this model. By analyzing the results we find this proposed algorithm can provide differential services both for real-time traffic and best-effort traffic. Besides, it can balance the energy and cost on the whole network and prolong the network lifetime by up to 500%.

关键词： wireless sensor networks QOS routing directed diffusion opnet simulation

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Modeling and simulation of P-Aloha,CSMA /CA and MACAW Protocols for Underwater Acoustic Channel

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Journal of Donghua University(English Edition) 2015年第1期32卷 35-40页

作者： DAO Van-phuong 左加阔赵力 NGUYEN Dang-nam 邹采荣孙剑 Key Laboratory of Underwater Acoustic Signal Processing of Ministry of Education Southeast University Ho Chi Minh City Industry and Trade College Petroleum Department Petrovietnam University School of Information Engineering Huangshan College

Medium access control( MAC) protocol of underwater acoustic communication network is a key technology for underwater acoustic networks( UANs). Most of the MAC protocols for wireless terrestrial communication networks have been designed with negligible propagation delay. If it is deployed directly in an underwater environment,the UANs will perform inefficiently. In this paper,the characteristics of underwater acoustic channel are modeled and simulated by using the opnet simulation tool,which are the speed of sound, propagation loss, and four sources for ambient noise: the turbulence,shipping,wind driven waves and thermal noise. The performance of pure Aloha( P-Aloha),carrier sense multiple access with collision avoidance( CSMA / CA) and multiple access collision avoidance for wireless local area network( MACAW) protocols in underwater acoustic channel environment are evaluated. The different performance of protocols in underwater environment is compared in the simulation.

关键词： underwater acoustic channel opnet simulation medium access control(MAC) protocol pure Aloha(P-Aloha) protocol carrier sense multiple access with collision avoidance(CSMA /CA) protocol multiple access collision avoidance for wireless local area network(MACAW) protocol

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Research of the Multiple Access Protocol for Underwater Acoustic Networks Based on opnet

Research of the Multiple Access Protocol for Underwater Acou...

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第二十九届中国控制会议

作者： YUAN Fei,WANG Shanhong,LIN Bilan,CHENG En (Key Laboratory of Underwater Acoustic Communication and Marine Information technology Ministry of Education,Xiamen University,Xiamen 361005,P.R.China

The research on MAC protocol is one of the key tasks of the underwater acoustic *** this paper,the author used the simulation tool opnet to research about the performance of the protocols ALOHA and MACAW in the underwater acoustic network,and compared the network performance in the different traffics,such as,the average delay,the throughput and the *** simulation results showed that the performance of the MACAW protocol was better than the ALOHA protocol in the current underwater networks,and both of them can be used in the low traffic network.

关键词： Underwater Acoustic Network Network Performance opnet simulation MAC Protocol

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