无线通信的跨层优化

传统的OSI分层结构无法适应无线网络环境，随着越来越多无线应用的出现，人们提出了跨层设计，其主要内容就是通过在协议栈的各层之间（主要是应用层、传输层、网络层、链路层和物理层）传递特定的信息，使协议栈能够根据无线环境的变化来实现对资源的自适应优化配置，从而更有效的利用无线网络资源，提高系统的性能。

Cross-layer optimization for wireless communication

Traditional OSI architecture is not adapted to wireless network with the development of wireless(applications.)Cross-layer design is proposed,its main content is that the protocol stack can realize self-adaptive optimization of resources according to the wireless environment changes through transmitting specific information between the layers of protocol stack,in order to utilize effectively wireless network resources,improve the performance of the system.