This paper proposes a protocol that, given a communication network, computes a subnetwork such that, for every pair (u,v)of nodes connected in the original network, there is a minimum-energy path between u and v in the subnetwork (where a minimum-energy path is one that allows messages to be transmitted with a minimum use of energy). The network computed by the protocol is in general a subnetwork of the one computed by the protocol given in. Moreover, the protocol is computationally simpler. This paper demonstrates the performance improvements obtained by using the subnetwork computed by the protocol through simulation.
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