Method for falling back to 2G/3G network, relevant device and communication system
US8688126B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2012 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | Sep 27, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention provides a method for falling back to a 2G/3G network, a relevant device and a system. The embodiments of the present invention includes: receiving, by a mobility management entity, a first message from an access network device, where the first message carries location area information of a target 2G/3G cell to which a user equipment UE prepares to connect; sending a second message for requesting to perform a location update on the UE to a mobile switching center MSC corresponding to a location area of the target 2G/3G cell; receiving a third message from the MSC, where the third message carries a temporary mobile station identity TMSI allocated to the UE by the MSC; and sending, to the UE, a fourth message carrying the TMSI, so that the UE, after being connected to the target 2G/3G cell, communicates with the MSC by using the TMSI.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.