Packet data network gateway and terminal mobility management system
US9894554B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 2012 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Apr 3, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A packet data network gateway and a UE mobility management system are disclosed. In the packet data network gateway, a context management unit is configured to: when the P-GW is selected as the UE's target P-GW, create a context for the UE and store the UE's context information from S-GW and a source P-GW to which the UE is currently attached; an identity management unit is configured to: assign a location identity including the UE's routing information to the UE. The present invention reselects a P-GW for the UE to attach, thereby eliminating the circuitous routing in the process of the UE connecting and using services, saving transmission bearer resources, reducing transmission delay of data packet, and ensuring that the UE is still reachable after changing the attached P-GW, thus neither the UE nor the peer end is aware of the movement of the UE in the IP level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.