Multi-Channel Pure Collective Aloha MAC protocol with decollision algorithm for satellite uplink

Abstract

One of the key enabling technologies for Internet-of-Things (IoT) is the satellite network. Communications in the uplink segment of a satellite network is achieved using a medium access control (MAC) protocol. This paper proposes an asynchronous Multi-Channel Pure Collective Aloha MAC protocol with a Decollision Algorithm (MC-PCA-DA). The exact theoretical formulation of the throughput is derived in this paper. The theoretical results are verified by simulation results. Numerical results show that the maximum throughput of the MC-PCA-DA MAC protocol can be up to 10 times (10x) for a single frequency channel as compared to that of the asynchronous Pure Aloha MAC protocol in a single frequency channel, up to 20 times (20x) for two frequency channels and up to 40 times (40x) for four frequency channels, respectively. Thus, the proposed MC-PCA-DA MAC protocol can achieve significant throughput gain over the basic Pure Aloha MAC protocol.