Call delivery to an IMS network for a mobile directory number homed in a 2G wireless network
US8811282B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2011 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Feb 13, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W40/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method to provide call delivery to an Internet Protocol Multimedia Subsystem (IMS) network for a Mobile Directory Number (MDN) homed in a second generation (2G) wireless network, without requiring Wireless Intelligent Network (WIN) operations and associated Mobile Switching Center emulation (MSCe) translations for routing the call request. A Home Location Register (HLR) determines whether the subscriber has subscribed to the IMS services. The HLR-based subscriber profile is enhanced with new IMS-related subscriber information. Enhanced American National Standards Institute-41 (ANSI-41) Mobile Application Part (MAP) operations and a new ANSI-41 parameter allow the MSCe to re-route the call origination request from a Public Switched Telephone Network (PSTN) to an entry point for the IMS network based upon the new IMS-related subscriber information received from the HLR. A Domain Name Server (DNS) supports routing-related traffic distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.