Abstract
In order to realize the cooperation of a group of nodes, messages have to be deleted to all the nodes. In addition to reliably and efficiently delivering messages, the electric energy consumed by nodes has to be reduced. In this paper, we discuss an energy-efficient broadcast protocol in wireless networks so that the total electric energy consumed by nodes can be reduced. In our previous studies, types of broadcast protocols, EEB and EEB2 protocols are proposed. Here, each node first selects first-neighbour nodes as child nodes. In the EEB protocol, a farthest child node is truncated until there is no other child node which can energy-efficiently forward messages to the node. A parent node consumes more electric energy to send messages to farther child nodes. Hence, a farthest child node is truncated if the distance from the parent node is longer in the EEB2 protocol. In this paper, we newly propose an augmented energy-efficient broadcast (AEEB) protocol. In the EEB and EEB2 protocols, a child node is selected for a parent node. On the other hand, one parent node is selected among possible parent nodes of each child node, which is nearest to the child node in the AEEB protocol. We evaluate the AEEB protocol and show the total electric energy consumed by nodes can be reduced.
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