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Method of transferring a telephone communication from a wireless network to another; and corresponding dual-mode mobile telephone terminal

A wireless terminal, wireless network technology, applied in the field of transferring telephone calls and related terminals from one wireless network to another

Inactive Publication Date: 2008-06-04
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The disadvantage of this approach is that it requires modifications to the associated global network which would result in the global network operator making the user pay installation and operating costs

Method used

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  • Method of transferring a telephone communication from a wireless network to another; and corresponding dual-mode mobile telephone terminal
  • Method of transferring a telephone communication from a wireless network to another; and corresponding dual-mode mobile telephone terminal
  • Method of transferring a telephone communication from a wireless network to another; and corresponding dual-mode mobile telephone terminal

Examples

Experimental program
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Effect test

no. 1 example

[0074] According to a first embodiment, said control means CM is able to control the wireless interfaces GI and WI to send a message containing a call setup request to a private branch exchange of a local area network, said call setup request containing a calling number and a called number, the two numbers In the public number plan shared by the global network PLMN and the fixed public network PSTN, it is the number of the dual-mode terminal.

[0075] According to a second embodiment, said control means CM are adapted to control said wireless interfaces GI and WI to send to a private branch exchange a message containing a call setup request containing a predetermined private number for the call transfer request.

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Abstract

This method makes it possible to transfer a telephone communication (B1-B2), established between a dual-mode wireless terminal (T1) and another terminal (T2), the dual-mode terminal having access simultaneously to a global wireless network (PLMN) and to a local wireless network (WLAN), the latter comprising an automatic exchange (PBX) able to carry out a three-way telephone conference, and possessing a permanent link (IPL) to the global network (PLMN). The communication (B1, B2) is supported firstly by the local network (WLAN) without passing through the global network (PLMN), and must be supported thereafter by the local network (WLAN) and the global network (PLMN). It consists in requesting from this automatic exchange (PBX): - the establishing of a second communication (B3-B2) between the dual-mode terminal (T1) and the second terminal (T2) via the local network (WLAN) and the global network (PLMN); - then the establishing of a telephone conference (B1-B2-B3) uniting the first and the second communication; - then the releasing of the first communication while allowing the second communication (B1-B3) to remain.

Description

technical field [0001] The invention relates to a method for transferring a telephone call from a global wireless telecommunication network, eg of GSM type, to a local wireless telecommunication network, eg of WiFi or Bluetooth type, and vice versa. It also relates to a dual-mode terminal comprising means for implementing said method. More specifically, it relates to a wireless local area network comprising at least one private branch exchange capable of establishing a conference call. Background technique [0002] The dual-mode mobile phone terminal has two radio interfaces capable of communicating via a global wireless telecommunication network according to, for example, GSM standards, and / or via a local wireless telecommunication network, according to, for example, WiFi standards, the latter by using the Internet Protocol (hereinafter referred to as IP ) connected to the fixed public telecommunication network by a permanent link, said Internet Protocol enabling Voice ove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/32H04Q7/38H04W36/14H04W84/12H04W84/16H04W88/06H04W92/02
CPCH04W76/002H04W92/02H04W84/16H04W88/06H04W84/12H04W76/40
Inventor R·加斯J-R·鲁索
Owner ALCATEL LUCENT SAS