Extended Dominating-Set-Based Routing in Ad Hoc Wireless Networks with Unidirectional Links

Efficient routing among a set of mobile hosts (also called nodes) is one of the most important functions in ad hoc wireless networks. Routing based on a connected dominating set is a promising approach, where the search space for a route is reduced to the nodes in the set. A set is dominating if all the nodes in the system are either in the set or neighbors of nodes in the set. In this paper, we extend dominating-set-based routing to networks with unidirectional links. Specifically, an efficient localized algorithm for determining a dominating and absorbant set of vertices (mobile hosts) is given and this set can be easily updated when the network topology changes dynamically. A host v is called a dominating neighbor (absorbant neighbor) of another host u if there is a directed edge from v to u (from u to v). A subset of vertices is dominating and absorbant if every vertex not in the subset has one dominating neighbor and one absorbant neighbor in the subset. The derived dominating and...

• Type: Journal
• Year: 2002
• Where: TPDS
• Authors: Jie Wu
• Keywords: Dominating Neighbor, Dominating Set, Mobile Hosts, TPDS 2002