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未来的作战网络需要具有低成本、能立即部署、自组织、健壮以及规模与密度可扩缩的特征。DARPA的下下代无线网络(WNaN)采用一种体系架构来迎接这些技术挑战,该架构首次在实际功能系统中呈现出几种创新的特征:动态频谱接入(DSA)、自适应多收发器频率指派、多信道媒体接入、高度可扩缩的路由以及容断组网(DTN)。文中介绍WNaN系统的网络体系架构,重点主要在于媒体接入和子网层。然后,简短地叙述这些关键协议如何协作工作、它们在该目标平台上是如何实现的。最后,将讨论WNaN对我军下一代战术网络设计的一些启发。
Future operational networks need features that are low cost, ready to deploy, self-organizing, robust, and scale and density scalable. DARPA’s Next Generation Wireless Network (WNaN) addresses these technical challenges with an architecture that for the first time presents several innovative features in an actual functional system: Dynamic Spectrum Access (DSA), Adaptive Multi-Transceiver Frequency assignments, multichannel media access, highly scalable routing, and disruptive networking (DTN). This article describes the WNaN system’s network architecture, the main focus is on media access and subnet layer. Then, briefly describe how these key protocols work together and how they are implemented on that target platform. Finally, we will discuss some of WNaN’s inspiration for our military’s next-generation tactical network design.