Dynamic call routing based upon identification of interworking server by user equipment
US9642043B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2014 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Jan 30, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W68/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are methods and systems that may help to dynamically rout calls in a communication network where circuit-switched fallback (CSFB) is implemented. In particular, a user equipment (UE) may include an identifier of an interworking server (IWS), which relayed a page message from a first access network to a second access network for transmission to the UE, in the corresponding page response message that the UE sends to the first access network. The inclusion of the IWD identifier in the page response message may allow the switch that receives the page response message to detect when the corresponding voice call was received at a different switch in the first network, and responsively initiate an inter-system handoff when this is the case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.