Throughput Improvement of Randomly Deployed Wireless Personal Area Networks

Abstract

Throughput is the key parameter used to estimate the quality of service of the Wireless Personal Area Networks (WPAN). Throughput of the network is degraded mainly due to the packet loss. The Packet loss problem is more in the networks, in which the nodes are deployed randomly. There are three significant factors responsible for packet loss in wireless Personal Area networks. They are, interference of co-existed networks working in the same frequency band, collisions due to co-located networks, and failure of intermediate nodes near the sink due to their over usage. In this paper, authors propose a solution to solve the problem of packet loss due to over usage of the intermediate nodes. The authors propose a routing algorithm, based on the remaining energy at the intermediate nodes, to prevent the over usage of intermediate nodes. Remaining-energy based Adaptive Multi-hop Algorithm (RAMA), which takes the routing decision based on the remaining energy at each of the neighbouring nodes and adopts short distance multi hop communication to relay the data from source node to sink node. The algorithm is implemented on TI wireless sensor nodes, and the performance is compared with SimpliciTI protocol. The experimental results show that a 27% improvement in the throughput is achieved with the proposed algorithm RAMA.