Maximizing Throughput with Multiple Power Levels in a Random Access Infrastructure-Less Radio System

We propose and analyse a new random access protocol with multiple power levels selection schemes for infrastructureless wireless networks. In these networks, mobile nodes may communicate with each other without a central entity (base station), where each mobile node will be either in a transmitting mode or in a receiving mode or in an idle mode. Throughput with random power levels selection scheme is derived in terms of the transmission probability of each mobile node, receiving probability of each mobile node and the number of power levels. Throughput with optimum power levels selection scheme is also derived and compared with the previous one. Results show that the optimum transmission probability of each mobile node to achieve the maximum throughput depends only on the number of power levels. The maximum throughput region is devised in terms of transmission probability of each mobile node and the number of power levels. The proposed new random access protocol is truly distributive in nature and can be easily implemented in infrastructure-less wireless access systems without requiring any centralized control.