无线自组织网传输功率控制与跨层优化

Transmission power control and cross-layer optimization in wireless Ad Hoc networks

无线自组织网节点功率有限,如何有效利用节点电量、改善网络性能是自组网领域研究的关键问题。首先讨论了节点传输功率对各协议层的影响,并归纳出功率控制的设计原则;然后分类介绍和比较了几种主要的控制机制。在传统协议分层研究的基础上,提出了对传输功率控制进行跨层优化的设计思想,并对运用跨层优化的困难给予了阐述;最后给出了传输功率控制领域最新的一些研究方向。

The power of wireless node is limited, so how to utilize the energy efficiently and how to improve the performance of network are the key topics in the research of wireless Ad Hoe networks. The relation between the transmission power and the protoeol layer is discussed at first, and the design principles are concluded, Some primary mechanisms of the power control are then introduced and compared. On the basis of tradition layering design, cross- layer optimization is proposed, some difficulties are discussed and the novel research directions are given.