Network mobility support and access control for movable networks
US7990935B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2004 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Dec 28, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/14
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention relates to access control for a movable network (15) managed by a mobile router (10), wherein said mobile route is interconnected through a bi-directional link (40) with a mobility anchoring agent (20) that anchors the network mobility for the mobile router. According to the invention, access control enforcement points (11, 21) are located at both the mobile router (10) and the mobility anchoring agent (20). Access control is exercised at the mobility agent (20) to filter downlink packets to the mobile router (10) and access control is exercised at the mobile router (10) to filter uplink packets to the mobility anchoring agent (20). In this way, unauthorized packets, both uplink and downlink, do not have to cross the air interface before being filtered away, thereby preventing waste of valuable radio resources. The access control modules are typically provisioned with access control filter information, preferably by means of a hierarchical provisioning structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.