本文介绍了一种在保证网络QOS需求（传输率）的前提下，对节点进行动态能量分配的中继选择算法。通过这种能量分配，减少了总的能量消耗，可以延长整个网络的生命周期。-For

a given quality of service (QoS) requirement such as transmission

rate between the source and the destination, relay nodes have an

adaptive power control scheme to meet the QoS requirement.

The adaptive power control scheme is assumed to be based on

the channel condition between relay nodes and the destination.

It is then an interesting problem to design an optimal relay

network that minimizes total average energy consumption.