COOPERATIVE AD-HOC NETWORKS FOR ENERGY EFFICIENT IMPROVE CONNECTIVITY

Abstract

Mobile ad-hoc network (MANET) has been developed to meet the increase in demand for high-speed wireless network. Wireless adhoc networks are multi-hop frameworks comprising of connections among wireless nodes in the absence of any infrastructure. Thus they normally consist of unpredicted network topologies. In MANETs nodes have the liberty to move freely in various directions. Due to limited battery power, nodes require energy efficient routing protocols to gear up their network performance. Cooperative communication plays an important role in wireless networks. This is evident from the fact that most of the present cooperative communication works are aimed at link-level physical layer issues. As a consequence, the influence of cooperative communication on network-level upper layer issues, such as topology control, routing and network capacity is unnoticed. Cooperative communication is a technology by the help of which multiple nodes transmit similar data at the same time. This increases the transmission coverage and also saves power. Earlier research work on topology control dealt with cooperative communication in the form of energy saving only and did not consider for extending the coverage. It has been noticed that cooperative communication can link disconnected networks. To overcome this problem, we have studied energy efficient topology control with cooperative communication. In this paper, it has been proposed for selection of optimum relay nodes so as to decrease the overall power consumption in the cooperative ad-hoc network.