MAC protocol for hidden terminal problem alleviation using
transmission pause control in wireless multi hop networks <Abstract> When IEEE802.11 DCF (Distributed Coordination Function) is applied to wireless multi hop network, network throughput decreases and energy consumption increases due to the increase of packet collisions caused by hidden terminals. This paper proposes the MAC (Medium Access Control) protocol for hidden terminal problem alleviation using transmission pause control in wireless multi hop networks. In the proposed protocol, terminals pause packet transmissions until the buffer usage ratio is larger than the threshold. As a result, the number of contention terminal decreases because of transmission pause. Thus, the proposed protocol can reduce packet collision. Simulation results show that the proposed protcol can reduce packet collision between transmitting terminal and hidden terminal. It is also shown that the throughput of proposed protocol is better than that of IEEE802.11 DCF and DCF with RTS/CTS. |