1. ZRP is a hierarchical routing protocol, which can control the router spending, cut the delay and improve the efficiency, while setting the best radius.

2. ASTR belongs to hierarchical routing protocol: it divides the whole network into many subareas logically through establishing subarea trees and each subarea is composed of a tree.

3. Then, a hierarchical routing tree with base station as the root is established according to the hop and energy-level of.

4. The fourth chapter describes a detailed hierarchical routing GMPLS-based framework for provisioning all-optical DWDM optical networks.Sentencedict

5. Hierarchical routing protocol, which can effectively increase the network lifetime, has become an open research area in wireless sensor networks.

6. In order to deal with hierarchical routing with delay and bandwidth constraints, a new topology aggregation algorithm called stair method was proposed.

7. The final chapter is a summary of this work done and proposed hierarchical routing protocols for WSN research outlook.

8. In the view of network structure, the subarea routing strategy is a hierarchical routing protocol.

9. As many routing protocols for wireless sensor network can't handle dynamic topological variation efficiently, a new hierarchical routing protocol (TVHRP) based on the shortest path is proposed.

10. Requesters and providers interact directly, through the minimum number of ESBs (there is no need to enforce hierarchical routing through the enterprise ESB that hosts the top-level registry).