Maximum throughput analysis and enhancement of slotted ALOHA for multihop ad hoc networks

We analyze the maximum throughputs of slotted-ALOHA-based multihop ad hoc networks with and without capture, by considering the degree (number of neighbors) of each node, and, different from prior research, allowing each node to have a different transmission probability. We propose a novel enhanced slotted ALOHA scheme, in which each station adaptively transmits packets according to the degrees of the stations´ neighbors. The analytical and simulation results show that the enhanced scheme can improve the network performance greatly.