On Finding Maximum Disjoint Paths for Many-to-One Routing in Wireless Multi-Hop Network

Bo LIU  Junzhou LUO  Feng SHAN  Wei LI  Jiahui JIN  Xiaojun SHEN  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E97-D   No.10   pp.2632-2640
Publication Date: 2014/10/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2013THP0015
Type of Manuscript: Special Section PAPER (Special Section on Frontiers of Internet of Things)
Category: 
Keyword: 
disjoint path,  multi-routing,  multi-hop,  heuristic algorithm,  

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Summary: 
Provisioning multiple paths can improve fault tolerance and transport capability of multi-routing in wireless networks. Disjoint paths can improve the diversity of paths and further reduce the risk of simultaneous link failure and network congestion. In this paper we first address a many-to-one disjoint-path problem (MOND) for multi-path routing in a multi-hop wireless network. The objective of this problem is to maximize the minimum number of disjoint paths of every source to the destination. We prove that it is NP-hard to obtain k disjoint paths for every source when k ≥ 3. To solve this problem efficiently, we propose a heuristic algorithm called TOMAN based on network flow theory. Experimental results demonstrate that it outperforms three related algorithms.