DEVELOPMENT OF RELAY SELECTION SCHEME FOR WIRELESS NETWORK

Abstract

In wireless networks, Nodes are used as relays to forward information to the destination. It
basically relies on the relay selection and power allocation process to optimize its performance because
all available nodes are not beneficial to use for forwarding. In wireless channel, a transmission is
overheard by adjacent nodes. A source in wireless network can use these adjacent nodes as relays and
process and re-transmit the signals to the destination. Network performance can be enhanced in terms of
energy consumption, reducing interference and increasing throughput.It also allows high-data-rate
terminals to assist low-data-rate terminals by relaying their data to provide higher transmission data
rates.In this paper, a new relay selection scheme for wireless mobile networks has been proposed that
effectively distributes traffic of packets from source nodes to the sink based on the path rate between the
source to relay and relay to destination. The source chooses the most optimal relay node to forward its
messages by estimating the rate in two hops from source to relay and relay to destination. This relay
selection scheme provides increased packet delivery ratio and less average energy consumption.