高能效无线网络中可靠组播的重传方案

Retransmission scheme for reliable multicast in energy-efficient wireless networks

针对最大程度地减少转发器的总能耗问题,将NACK设备关联和转发器传输功率的联合优化公式转化为混合整数编程问题。针对该问题提出了一种有效的算法,以找到良好的关联模式和传输功率。仿真结果表明,采用D2D通信可以大大降低基站的组播流量负荷。而且与具有一定数量的转发器的同类设备相比,该转发方案大大降低了转发器的总能耗。

For the problem of minimizing the total energy consumption of the transponder to the greatest extent,the joint optimization of NACK device association and retransmittter’s transmission power of the repeater is formulated as a mixed integer programming problem.An effective algorithm is proposed for this problem to find a good correlation mode and transmission power.Simulation results show that the use of D2D communication can greatly reduce the multicast traffic load of the base station.Moreover,compared with similar devices with a certain number of retrains mitters,forwarding scheme greatly reduces the total energy consumption of the retransmitters.