Internetworking for circuit switched fallback-network initiated USSD request/notification procedure mobile-terminated location request procedure provide subscriber information procedure
US10004003B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2012 |
| Grant date | Jun 19, 2018 |
| Priority date | — |
| Expiry date | Apr 27, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W92/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for switch user equipment from a Long Term Evolution system to a Circuit Switched system when receiving a voice call is disclosed. The method may comprise: receiving, at an IWF (Internet Working Function) network node, a Mobility Application Part Unstructured Supplementary Service Data (MAP USSD) message identifying a User Equipment (UE) originated from a USSD application, the UE associated with a first Mobile Switching Center (MSC); initiating Circuit Switched Fallback (CSFB) by sending a paging request to the UE; receiving a Cancel Location message associated with the UE from a Home Location Register (HLR) indicative of the UE being associated with a second MSC; forwarding the MAP USSD message to the UE via the HLR and the second MSC; receiving a MAP USSD response message from the UE via the HLR; and forwarding the MAP USSD response message to the USSD application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.