Packet filtering for emergency service access in a packet data network communication system
US7539186B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2003 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Mar 31, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W80/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus method of filtering packet data for an anonymous user device in a packet data network communication system includes a first step of initiating a call from an anonymous user device on a home network. A next step includes assigning an interim identity and interim IP address to the user device. A next step includes determining a level of service access of the data packets from the user device. A next step includes mapping the level of service access of the user device to the IP address. A next step includes defining permissible routing identities per the level of service access. A next step includes routing the data packets of the call along with the associated IP address to only those location addresses from the defining step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.