MAC mechanism based on link prediction and network coding

被引：0
|
作者：
Shang F.-J. [1 ]
Gong W.-J. [1 ]
Geng Z. [1 ]
机构：
[1] College of Computer Science and Technology, Chongqing University of Posts and Telecommunications, Chongqing
来源：
Tongxin Xuebao/Journal on Communications | 2016年 / 37卷 / 01期
关键词：
Link quality estimation; Network coding; Optimal factor; Path optimization;
D O I：
10.11959/j.issn.1000-436x.2016003
中图分类号：
学科分类号：
摘要：
A MAC mechanism was proposed based on network coding and link prediction for wireless sensor network. Firstly, an adaptive-window scheme was given based on EasiLQE which uses improved EWMA link quality estimation method and combines the methods of hardware and software, so the accuracy is increased. As a result of the instantaneous active detection, reaction rate became more rapid when unexpected situation was occurring in the network. Secondly, a MAC protocol was improved based on the existing MAC protocol. In the protocol improved, high-level secondary nodes around the path determined is increased by the routing module using the broadcast nature of wireless networks that already exists rationally, so that significantly increased the network coding opportunity, without many problems caused by the concentrating flows. Finally, to seek a more appropriate balance between data diffusion and coding opportunities, the optimal factor was discussed. Experiment results show that this improved MAC protocol can increase network throughput and balance the load of the whole network effectively by using over-heard of nodes rationally, without causing concentrating flows at the same time. © 2016, Editorial Board of Journal on Communications. All right reserved.
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