Anchor MSC information retrieval from a serving MSC following a completed inter-exchange handoff
US6594492B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 1999 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | May 21, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In the context of a completed inter-exchange handoff of a mobile station communication, an anchor exchange may request certain call related information from a currently serving exchange. This request is made through use of an inter-exchange information request message issued from the anchor exchange and sent (perhaps through one or more tandem exchanges) to the serving exchange. Responsive thereto, the serving exchange processes the request, obtains the requested call related information, and returns the requested information in an inter-exchange information request return result message. The information request message may comprise a newly defined ANSI-41 message, a vendor proprietary extension to the ANSI-41 message set, or an enhancement to an existing ANSI-41 message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.