Interworking between mobile railway networks and GSM networks
US11540347B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Dec 3, 2018 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Dec 3, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W92/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A server receives a call request for a mission critical, push to talk (MCPTT) call. In response to receiving the call request, the server accesses a mapping of an MCPTT identifier of a user equipment with an interworking identifier that is formed according to an address format implemented in Global System for Mobile communications (GSM) for Railways (GSM-R). The server then forwards the call request from the server based on the mapping. In some cases, the MCPTT identifier is a uniform resource identifier (URI) and the interworking identifier is represented in an e164 format.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.