分层路由（Hierarchical Routing），IS-IS区域提供了一种在IS-IS域中伸缩路由的方法。正常的IS-IS区域和连接它们的骨干区域形成两级的路由层次。区域内的路由称作一级路由。域内独立的区域之间的路由称作二级路由。
分层路由选择 Hierarchical routing
OSPF分层路由技术 OSPF route layer technology
分层状态路由 Hierarchical State Routing ; HSR
分层状态路由算法 Hierarchical State Routing ; HSR
A new hierarchical routing protocol called layered-TORA based on the autonomous clustering scheme is proposed to solve this problem.
为解决此问题,提出了一个基于自治分簇策略的新型分层路由协议:Layered-TORA。
参考来源 - 一种新型Ad Hoc网络分层路由协议及性能评价Propose a distributed inter-cluster multi-hop sensor network cluster routing protocol MSRP. The scalability of the protocol is improved through the inter-cluster multi-hop mechanism.
提出了一个分布式、簇间多跳的传感网分层路由协议MSRP。
参考来源 - 无线传感网分布式多跳分层路由协议MSRP的研究与设计Dynamic joining and leaving of member, the participation of QoS information, the need of network hierarchical routing are the obstacles to solve multicast routing problem.
组成员的动态加入和退出、QoS信息的参与、网络分层路由的需要都为组播路由问题的解决制造了重重障碍。
参考来源 - 基于QoS的动态组播路由问题研究Propose a distributed inter-cluster multi-hop sensor network cluster routing protocol MSRP. The scalability of the protocol is improved through the inter-cluster multi-hop mechanism.
提出了一个分布式、簇间多跳的传感网分层路由协议MSRP。
参考来源 - 无线传感网分布式多跳分层路由协议MSRP的研究与设计·2,447,543篇论文数据，部分数据来源于NoteExpress
一个良好的分簇算法是进行分层路由协议研究的关键和前提。
The premise and key of the research of layered routing protocol is an excellent clustering algorithm.
最后一章是对本文所做工作的总结并提出了对WSN分层路由协议的研究工作的展望。
The final chapter is a summary of this work done and proposed hierarchical routing protocols for WSN research outlook.
分簇算法是无线传感器网络中实施分层路由所采用的重要方法，尤其是传感器节点受到能量和带宽的严重制约。
Clustering algorithms are the most important method for hierarchy routing in wireless sensor network; especially the sensor nodes are limited by poor energy and bandwidth.
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