CAJ | 학술논문

提出了一种应用于移动Ad Hoc网络中的联合空时预留和功率控制MAC协议.它通过对信道时间和空间资源预留更为精确的估计优化了可用的信道资源,提高了信道的空间利用率,降低了碰撞冲突的概率.因为物理层头部采用最低的速率进行传输,把这种时空估计信息嵌在物理层帧头部,可以把信息传播到更多更远的邻节点,减少了碰撞的概率.同时结合功率控制技术对数据包传输功率进行控制,降低了节点的能量消耗.通过仿真与IEEE 802.11 MAC协议进行比较,该协议提高了系统的吞吐量,移动节点功率消耗明显降低,节点的能量利用效率得到提高.
제출료일충응용우이동Ad Hoc망락중적연합공시예류화공솔공제MAC협의.타통과대신도시간화공간자원예류경위정학적고계우화료가용적신도자원,제고료신도적공간이용솔,강저료팽당충돌적개솔.인위물리층두부채용최저적속솔진행전수,파저충시공고계신식감재물리층정두부,가이파신식전파도경다경원적린절점,감소료팽당적개솔.동시결합공솔공제기술대수거포전수공솔진행공제,강저료절점적능량소모.통과방진여IEEE 802.11 MAC협의진행비교,해협의제고료계통적탄토량,이동절점공솔소모명현강저,절점적능량이용효솔득도제고.
A protocol combining spatial and time reservation with power control Medium Access Control (MAC) protocol in mobile Ad Hoc networks was presented. It could efficiently utilize the available channel resource along with the spatial as well as time dimension, and improve channel spatial reuse through avoiding collision. The proposed protocol embedded the spatial and time reservation requirements in the PHY header, and transmitted them at the lowest data rate to a larger group of neighbors, and thus avoided collisions. By decreasing the transmission power of the data packet, the energy consumption of mobile nodes was decreased. Simulation results indicate that compared to IEEE 802.11 MAC protocol, the proposed protocol can improve the throughput performance and decrease the power consumption greatly and improve the energy utilization of mobile terminals while avoiding collision.