Lifetime maximizing cooperative energy efficient broadcast tree in multi hop wireless networks

To improve the network performance in multi hop wireless network, cooperative routing is widely used now-a-days. We mainly study the lifetime maximizing broadcast tree generation for a given non cooperative broadcast tree under cooperative routing technique in energy constrained wireless network. The work presented in this paper identifies energy inefficient directed edges and replaces them by directed energy efficient cooperative paths. Energy consumption of a node in broadcast tree includes (1) point to point communication, or (2) point to multipoint communication, or (3) summation of point to point and cooperative communication, or (4) summation of point to multipoint and cooperative communication. Simulation results show that our method improves the network lifetime than most popular MST based broadcast tree.