Data Broadcast with Adaptive Network Coding in Heterogeneous Wireless Networks

被引:16
|
作者
Yang, De-Nian [1 ]
Chen, Ming-Syan [2 ,3 ]
机构
[1] Acad Sinica, Inst Informat Sci, Taipei 115, Taiwan
[2] Acad Sinica, Res Ctr Informat Technol Innovat, Taipei 115, Taiwan
[3] Natl Taiwan Univ, Dept Elect Engn, Taipei 10764, Taiwan
关键词
Data broadcast; network coding; heterogeneous wireless networks; AD HOC NETWORKS; MULTICAST; ALLOCATION; ALGORITHMS; EFFICIENT; HANDOFF; SCHEME;
D O I
10.1109/TMC.2008.97
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In this paper, we propose a new data broadcast mechanism with network coding in heterogeneous wireless networks. Our mechanism adaptively clusters the mobile hosts in fewer cells to minimize the bandwidth consumption. In addition, we adaptively code the data according to the data temporarily stored in each mobile host with a distributed manner. Our mechanism allows each delivered message to be coded from only a subset of data to further reduce the number of required messages. We formulate the cell selection and broadcast coding problem with integer programming and prove that the problem is NP-hard. We design a distributed algorithm based on Lagrangean relaxation. Our algorithm needs no server to record the location, queried, and stored information of receivers. Moreover, our algorithm is adaptive to the dynamic group membership, mobility, queried, and stored data of receivers.
引用
收藏
页码:109 / 125
页数:17
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