Energy efficient broadcasting and multicasting in static wireless ad hoc networks

In this paper, we present three energy efficient broadcast and multicast routing algorithms for wireless ad hoc networks. The first algorithm computes a broadcast tree whose energy consumption is within a factor 2 + 2 ln(n - 1) of the optimal. The second algorithm computes a multicast tree whose energy consumption is within a constant factor of the optimal. Our third algorithm, for a multicast request with a given duration, computes an optimal multicast tree such that the minimal remaining energy of nodes is maximized after the multicast session. This algorithm helps to maximize the lifetime of the network.