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:
Apr. 05, 2022
Filed:
Nov. 12, 2019
Deutsche Telekom Ag, Bonn, DE;
DEUTSCHE TELEKOM AG, Bonn, DE;
Abstract
A method for decreasing a Call Setup Time Key Performance Indicator (CST KPI) of an Internet Protocol (IP) multimedia call in a mobile telecommunications network includes: initiating the IP multimedia call from an originating user equipment (UE) to a terminating UE; transmitting a session initiation protocol (SIP) call initiation message from the originating UE to a terminating Proxy-Call Session Control Function (P-CSCF) through an originating Serving-Call Session Control Function (S-CSCF); and creating a wake-up message via a network element upon receiving the SIP call initiation message. The wake-up message bypasses a plurality of network application servers (ASs) to start switching a transition of the terminating UE from an idle state to a connected state before the SIP call initiation message reaches the terminating P-CSCF.