QoS signaling for mobile IP
US7453851B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2003 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | May 21, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W80/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A quality of service (QoS) signaling packet for arranging QoS connections upon handoff between a mobile node (MN) and a correspondent node (CN) using Internet Protocol (IP), the signaling packet includes one or more QoS flow requirements, one or more classifier parameters, QoS session identification information composed of a previous QoS session ID, a new QoS session ID, and a sequence number. The QoS session IDs are used for establishing a new data path and for added security against spoofing, can be composed of a key-based signature combination of a mobile node's new care of address (CoA) and the sequence number. The packet may also include a previous node address and a cookie, both of which are inserted by a previous node. The previous router address is used for backtracking communications and establishing/updating flow tables while the cookie is used for authentification of node-to-node messages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.