CAJ | 학술논문

针对编码协同网络中的协同节点选择问题,提出了一种速率自适应协同与动态最大化网络生存期相结合的协同节点选择算法(RAC-DPLM).该算法联合考虑了业务期望的传输速率、信道状态信息(CSI)以及剩余能量信息(RSI)对网络生存期进行优化.通过将非线性优化问题转化为线性规划问题,不仅降低了算法的复杂度,而且达到对网络资源的动态分配,进而为不同的业务速率提供QoS保证,并有效地延长了网络生存期.在不同参数下的仿真结果表明:相对于固定协同节点选择算法,该算法在保证业务QoS的前提下,将网络生存期延长了4～6倍.
침대편마협동망락중적협동절점선택문제,제출료일충속솔자괄응협동여동태최대화망락생존기상결합적협동절점선택산법(RAC-DPLM).해산법연합고필료업무기망적전수속솔、신도상태신식(CSI)이급잉여능량신식(RSI)대망락생존기진행우화.통과장비선성우화문제전화위선성규화문제,불부강저료산법적복잡도,이차체도대망락자원적동태분배,진이위불동적업무속솔제공QoS보증,병유효지연장료망락생존기.재불동삼수하적방진결과표명:상대우고정협동절점선택산법,해산법재보증업무QoS적전제하,장망락생존기연장료4～6배.
Partner choice is a basic problem in a coded cooperative network. In this paper, a novel partner choice algorithm (Rate Adaptation Cooperation-Dynamic Protocol for Lifetime Maximization——RAC-DPLM) is proposed, which can adapt to the transmission rate and maximize network lifetime efficiently. By considering the expected traffic transmission rate, channel state information (CSI) and residual energy information (REI) together, our scheme aims at optimizing the network lifetime. Furthermore, the complexity of our scheme is reduced by converting the nonlinear program into a linear program. Our scheme is able to allocate the network resource dynamically and guarantee the QoS for different traffic rates, which contributes to the extension of the network lifetime. Simulation results show that the network lifetime is prolonged about 4～6 times compared with the fixed priority selection scheme under QoS constrains.