Adaptive Block ACK for Large Delay of Space-Terrestrial Integrated Network

Aiming at the large delay characteristics of space-terrestrial integrated network, an efficient MAC protocol based on TDMA adaptive block ACK is proposed in this paper. Among them, the adaptive block ACK can effectively reduce the delay of the space-terrestrial integrated network by reducing the probability of retransmitting, at the same time, it can reduce the overhead of the MAC layer and help to achieve high throughput of the Space-Terrestrial integrated network. The simulation results with different access strategies show that the proposed efficient MAC access protocol has great advantages over the traditional ACK and block ACK access methods in system delay and network throughput, and has certain guiding significance for Space-Terrestrial integrated network.