CAJ | 학술논문

在节点能量受限的无线协作网络中，为延长整个网络的工作时间，提出无线协作网络中基于节点效用的M AC协议。物理层采用解码转发的通信方式，数据链路层采用基于节点效用的M AC协议。综合考虑节点的最大剩余能量及与目的节点之间的距离，选择最优的中继节点；根据选择的中继节点进行最优功率分配，以达到节省能量的效果。仿真结果表明，该协议可以有效延长无线协作网络的生命周期。
재절점능량수한적무선협작망락중，위연장정개망락적공작시간，제출무선협작망락중기우절점효용적M AC협의。물리층채용해마전발적통신방식，수거련로층채용기우절점효용적M AC협의。종합고필절점적최대잉여능량급여목적절점지간적거리，선택최우적중계절점；근거선택적중계절점진행최우공솔분배，이체도절성능량적효과。방진결과표명，해협의가이유효연장무선협작망락적생명주기。
To extern the lifetime of the node energy limited wireless cooperative network ,a node-utility-based cooperative MAC protocol was presented .DF was taken as the physical layer protocol .The maximum remain energy and the distance between the relay and the destination node were considered to select a best relay in the data link layer .Then the power was optimally alloca-ted to the source and relay nodes with the objective of minimizing the total transmission power .The simulation results show that proposed protocol can prolong the lifetime of the wireless cooperative network .