SAPCMP: Self Adaptive Power Control MAC Protocol Using RTS/CTS

Power control is an efective way to enhance network throughput inlarge scale ad-hoc network, while the enhancement of throughput wouldcause more hops between source and destination, and further, it wouldcause high transmitting delay. In this paper, we research on how to de-creasethedelayofadhocnetworkusingpowercontrol. Thispaperpresentsa proposal of dynamic setting of transmission power in order to meet boththroughput and delay requirements. This proposal, called SAPCMP, isconceived on the exploitation of RTS/CTS protocol to deduce the cur-rent network load and to consequently set transmission power level of eachnode. ThreepracticalandtheoreticalbasesofSAPCMPare:1)LoadAdap-tive Power Control theory which is verifed in this paper through simulat-ing,2)clustering phenomenon of network trafc in short time, and3)RT-S/CTS mechanism in IEEE802.11. Finally, we conduct simulations tostudy its performance and compare the simulation results with traditionalapproaches, that is, same throughput and lower delay.