In general Wireless Sensor Networks (WSN?s), improving the network reliability by using cooperative communication to select the relay node with low overhead is a challenging task. Also the design of routing scheme based on link quality is a critical problem. Due to the resource constraints, connections between the nodes are changeable one. It leads to the network to create a various routes which are necessary. By using the established path, it delivers the data to the base station in a reliable manner. This paper concentrates on a cross layer approach by using various cooperative metric such as Packet Delivery Rate (PDR), Packet Reception Rate (PRR), Required Number of Packet transmission (RNP), Average number of packet sent/resent and Expected Transmission Time (ETX). These parameters are taken as a fuzzy parameter that exploits the cooperative diversity at the routing layer. We propose a Fuzzy based High Quality Link Set Routing (FHQLSR) which selects the high quality relay node and evaluates the quality of link in each node by using RNP and ETX parameters. This FHQLSR scheme is used to find the effective relay node that forward packets to the base station via high quality link and also find the optimal path using Improved Dijikstra?s Algorithm (IDA) in the multi hop networks. By considering routing and link quality parameters, the FHQLSR scheme improves the overall reliability, scalability and stability of the network.
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