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Journal of Computer Science and Technology 2013, Vol. 28 Issue (1) :42-53    DOI: 10.1007/s11390-013-1311-y
Special Section on Selected Paper from NPC 2011 << Previous Articles | Next Articles >>
自适应节能算法: 跨MAC层和网络层的移动自组织网络节能机制
Jin-Tao Meng1,2,3 (孟金涛), Member, CCF, Jian-Rui Yuan1,4 (苑建蕊), Member, CCF Sheng-Zhong Feng1 (冯圣中), Member, CCF, and Lian-Sheng Tan5,* (谭连生)
Power Adjusting Algorithm: A New Cross-Layer Power Saving Mechanism for Mobile Ad-Hoc Networks
Jin-Tao Meng1,2,3 (孟金涛), Member, CCF, Jian-Rui Yuan1,4 (苑建蕊), Member, CCF Sheng-Zhong Feng1 (冯圣中), Member, CCF, and Lian-Sheng Tan5,* (谭连生)
1. Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China;
2. Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100190, China;
3. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
4. Central South University, Changsha 410083, China;
5. School of Information Science and Engineering, Central China Normal University, Wuhan 430079, China

摘要
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摘要 节能在在移动自组织网络中是一个至关重要的,在MAC层和网络层都可以进行节能设计.然而以前的研究工作都只关注于通过MAC层或网络层动态调整传输能耗来提高信道利用率.本文同时关注在MAC层和网络层的能耗,并为移动自组织网络提出了一个新的自适应的节能算法(PAA), 该算法,在通讯节点随机移动的情况下,可以在周期切换时通过重启路径发现机制来找到最佳能效的新路由,同时通过调整信号发射端的功率来维持一个周期内的路由连通性. 通过理论分析PAA算法的每一步操作后,我们发现重启路径发现机制的这个周期是影响本算法节能的至关重要的一个参数,由此通过分析PAA每一步的能耗,我们为PAA抽象了一个能耗模型,并用来计算使得PAA达到最小能耗时最优的周期时间.在PAA的设计中我们也考虑到了通讯节点的移动性,PAA可以通过动态调整信号发射端的功率和周期性的启动路径发现机制来平衡维持路由和数据发送的能耗.实验结果显示,当移动节点的最大移动速度为8m/s时,PAA相比于DSR可以节能40%.
关键词移动自组织网络   移动控制   节能设计   能效     
Abstract: Power saving is one of the key issues in Mobile Ad-Hoc Networks (MANETs). It can be realized in Medium Access Control (MAC) layer and network layer. However, previous attentions were mainly paid to MAC layer or network layer with the aim of improving the channel utilization by adopting variable-range transmission power control. In this paper we focus on the power saving in both MAC layer and network layer, and propose a Power Adjusting Algorithm (PAA). In the presence of host's mobility, PAA is designed to conserve energy by adjusting the transmission power to maintain the route's connectivity and restarting the route discovery periodically to find a new route with better energy efficiency dynamically. After analyzing the operations of PAA, we find that the length of route discovery restarting period is a critical argument which will affect power saving, and an energy consumption model is abstracted to find the optimal value of the restarting period by analyzing the energy consumption of this algorithm. PAA can handle the mobility of MANET by adjusting the transmission power and in the meantime save energy by restarting route discovery periodically to balance the energy consumption on route discovery and packet delivering. Simulation results show that, PAA saves nearly 40% energy compared with Dynamic Source Routing protocol when the maximum speed of mobile hosts is larger than 8 m/s.
Keywordsmobile ad-hoc networks   mobility control   power control   power efficiency     
Received 2012-01-12;
本文基金:

Supported by the National Natural Science Foundation of China under Grant Nos. 61070197, 61103049, Shenzhen Research Fund of China under Grant No. JC201005270342A.

引用本文:   
Jin-Tao Meng, Jian-Rui Yuan, Sheng-Zhong Feng, Lian-Sheng Tan.自适应节能算法: 跨MAC层和网络层的移动自组织网络节能机制[J]  Journal of Computer Science and Technology , 2013,V28(1): 42-53
Jin-Tao Meng, Jian-Rui Yuan, Sheng-Zhong Feng, and Lian-Sheng Tan.Power Adjusting Algorithm: A New Cross-Layer Power Saving Mechanism for Mobile Ad-Hoc Networks[J]  Journal of Computer Science and Technology, 2013,V28(1): 42-53
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http://jcst.ict.ac.cn:8080/jcst/CN/10.1007/s11390-013-1311-y
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