GPRS tunneling protocol path integrity protocol
US7414997B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 2004 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | Jun 16, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Network efficiency is improved by building and maintaining path integrity tables in nodes of a network. The tables include path integrity information for paths associated with the nodes. A path is defined by a source address, a destination address and a port or version number. Once a node is made aware of a path, either by handling network message traffic associated with the path or through manual entry, the node maintains path status information with information provided by normal network message traffic, or absent the normal network message traffic, by transmitting Echo Request messages and processing information related to Echo Response messages or the lack thereof. Information related to paths that are disabled for longer than a disabled path duration limit is deleted from the tables. A Gratuitous GTP Echo Response message can notify other nodes of an administrative state change in a node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.