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Title:
DIGITAL RADIO-COMMUNICATION SYSTEM FOR CHANGING A NARROW-BAND INFRASTRUCTURE AND TERMINALS INTO A WIDE-BAND INFRASTRUCTURE AND TERMINALS
Document Type and Number:
WIPO Patent Application WO/2013/053414
Kind Code:
A3
Abstract:
The invention relates to a radio-communication system (100) for Push-to-Talk applications, comprising: a narrow-band PMR-technology terminal (110) capable of connecting, via a radio-electric interface, to a narrow-band network infrastructure (120) for accessing, via a PTT server (150), a set of narrow-band PTT resources or applications (160); and a wide-band-technology terminal (210, 510, 610) capable of connecting, via a radio-electric interface, to an IP-WAN network (240) for accessing, via a server (265), a set of wide-band PTT resources or applications (260), wherein said terminal (210, 510, 610) comprises a client PTT application (215, 515, 615) on the IP-WAN network configured to establish an IP connection between the terminal (210, 510, 610) and a PTT server (250, 550, 550a, 550b, 550c, 650, 650a, 650b, 650c) over the IP-WAN via an interface (225, 525, 625a, 625b), such that said terminal (210, 510, 610) can access the narrow-band PTT resources or applications (160) and establish a communication channel with the terminal (110).

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WO/2005/079088METHOD FOR SWITCHING BETWEEN A PACKET-ORIENTED PTT SESSION AND A LINE-ORIENTED TELEPHONE CONNECTION AMONG AT LEAST TWO RADIO COMMUNICATION TERMINALS
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Inventors:
PISON LAURENT (FR)
PATEROUR OLIVIER (FR)
Application Number:
PCT/EP2012/003586
Publication Date:
July 11, 2013
Filing Date:
August 24, 2012
Export Citation:
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Assignee:
CASSIDIAN SAS (FR)
PISON LAURENT (FR)
PATEROUR OLIVIER (FR)
International Classes:
H04W4/10
Foreign References:
US20090239527A12009-09-24
EP2259658A12010-12-08
Other References:
DURANTINI A ET AL: "Integration of Broadband Wireless Technologies and PMR Systems for Professional Communications", NETWORKING AND SERVICES, 2008. ICNS 2008. FOURTH INTERNATIONAL CONFERENCE ON, IEEE, PISCATAWAY, NJ, USA, 16 March 2008 (2008-03-16), pages 84 - 89, XP031239280, ISBN: 978-0-7695-3094-9
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