Resilient Packet Ring (RPR) is an IEEE standardized next-generation metro optical transport technology based on ring network topology .
弹性分组环（RPR）是一个由IEEE标准化的基于环网拓扑的新一代城域光传送技术。
Presently, Mobile Communication Company's GPRS network that based on the 2.5 G can supply packet radio service and low cost service of wireless transmission.
目前，移动公司建成的基于2.5代移动通信gprs网络能够提供端到端的无线分组交换数据业务，提供低成本的数据无线传输业务。
Finally, it emphatically describes the international proposals on new generation communication network for the next century, including the packet-based core network and broadband access networks.
然后着重介绍了国际上对新世纪初准备实现的新一代国家通信网基础结构的具体设想，其中包括以分组为基的核心网和各种宽带接入网。
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