Non-3GPP to 3GPP network handover optimizations
US8457635B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2009 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Jan 31, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W60/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method for a handover of a mobile node from a non-3GPP to a 3GPP network, and of a mobile node, which is located in a non-3GPP/3GPP network. The handover is improved by discovering an appropriate MME and registering the mobile node at the discovered MME, in advance. This includes to first determine the location of the mobile node in the non-3GPP network, so as to be able to detect an MME in the vicinity of the mobile node's location. The 3GPP contexts are then transmitted to the new MME before the handover is performed. Moreover, the invention teaches to change the Serving-Gateway in the 3GPP network before performing a handover, thereby accelerating the handover. When a handover gets likely, the mobile node's location is determined and a new Serving-Gateway is selected. The data path is changed to go via the new Serving-Gateway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.