The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 27, 2022
Filed:
Dec. 03, 2018
Applicant:
Nokia Technologies Oy, Espoo, FI;
Inventor:
Peter Leis, Penzberg, DE;
Assignee:
NOKIA TECHNOLOGIES OY, Espoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 76/45 (2018.01); H04W 4/10 (2009.01); H04W 8/26 (2009.01); H04W 92/02 (2009.01);
U.S. Cl.
CPC ...
H04W 76/45 (2018.02); H04W 4/10 (2013.01); H04W 8/26 (2013.01); H04W 92/02 (2013.01);
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.