UMB网络架构

超移动觅带（UMB）无线接入技术能以非常高的速率实现IP分组的有效无线传送，同时，即使在小区边缘，也可提供无缝移动和最佳的服务质量（QoS），而不会降低频率再用。UMB系统利用高度创新的扁平化网络架构，简化了核心网和网络接口，从而易于实现网络扩展。UMB架构的一个主要原则是无缝移动。网络架构的设计是关键所在，有利于实现在UMB网络内和不同技术间的无缝切换。革新性的概念可实现基站间的快速交换，同时最大限度地减少开销和提供简化的网络接口。新的隧道机制提供在数据一链路层（层2）和IP层（层3）的信令交换，实现了跨基站的快速移动。本文探讨了UMB网络架构的主要特性，并对不同架构设计选择进行了深入分析。

UMB Network Architecture

Ultra Mobile Broadband (UMB) radio-access technology enables efficient wireless transfer of IP packets at very high data rates while providing seamless mobility and best Quality of Service (QoS), even at the cell edges, without lowering frequency re-use. UMB systems benefit from a highly innovative flat network architecture that simplifies the core network and network interfaces, making it easy to scale the network. One of the key principles for UMB architecture is seamless mobility. A major emphasis is placed on the design of network architecture to facilitate seamless handoffs both within the UMB network and across different technologies. Innovative concepts enable fast switching between base stations while minimizing overhead and offering simpler network interfaces. New tunneling mechanisms provide signaling exchange at the data-link layer (layer 2) and IP layer (layer 3) to enable faster mobility across the base stations. This paper discusses key features of UMB network architecture, and provides insight into various architecture design choices.