Approximation algorithms for minimum broadcast schedule problem in wireless sensor networks

被引：4
|
作者：
Shang, Weiping [2 ]
Wan, Pengjun [3 ]
Hu, Xiaodong [1 ]
机构：
[1] Chinese Acad Sci, Inst Appl Math, Beijing 100190, Peoples R China
[2] Zhengzhou Univ, Dept Math, Zhengzhou 450052, Peoples R China
[3] IIT, Dept Comp Sci, Chicago, IL 60616 USA
来源：
FRONTIERS OF MATHEMATICS IN CHINA | 2010年 / 5卷 / 01期
基金：
中国国家自然科学基金; 美国国家科学基金会;
关键词：
broadcast schedule; approximation algorithm; wireless sensor network; unit disk graph;
D O I：
10.1007/s11464-009-0050-4
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
A wireless sensor network usually consists of a large number of sensor nodes deployed in a field. One of the major communication operations is to broadcast a message from one node to the rest of the others. In this paper, we adopt the conflict-free communication model and study how to compute a transmission schedule that determines when and where a node should forward the message so that all nodes could receive the message in minimum time. We give two approximation algorithms for this NP-hard problem that have better theoretically guaranteed performances than the existing algorithms. The proposed approach could be applied to some other similar problems.
引用
收藏
页码：75 / 87
页数：13
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