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为了进一步适应无线网络环境下各种应用的需要,提高网络性能,无线网络的跨层设计已成为目前国内外网络研究的热点和难点问题之一。本文给出了无线网络跨层设计的定义,分析了跨层设计的原因、优势和主要技术。对跨层设计和联合优化方面的研究作了介绍,讨论了跨层设计的衡量准则,接着介绍了现有的无线通信结合物理层的联合设计方法。最后探讨了无线网络跨层设计面临的挑战和今后的研究方向。
In order to further adapt to the needs of various applications under wireless network environment and improve the network performance, the cross-layer design of wireless networks has become one of the hot and difficult issues in the field of network research at home and abroad. This article gives the definition of cross-layer wireless network design, analysis of the reasons for cross-layer design, advantages and main technologies. The research on cross-layer design and co-optimization is introduced. The measurement criteria of cross-layer design are discussed. Then, the existing joint design method of wireless communication with physical layer is introduced. Finally, it discusses the challenges of cross-layer wireless network design and the future research directions.