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Method and device for connecting urgent call in wireless network

An emergency call and wireless network technology, applied in wireless communication, emergency/dangerous communication services, selection devices, etc., can solve problems such as rejection, call cannot be routed to the emergency center, emergency call cannot be recognized, etc.

Active Publication Date: 2008-02-27
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, there is no special connection scheme designed for emergency calls, so it can only be connected based on the above-mentioned scheme. However, since the emergency number is not included in the call connection request message, the MSC cannot route the handover to the VSS application server , and then, due to the lack of relevant routing information, the call cannot be routed to the emergency center, and the emergency call connection fails
[0006] In addition, because the called number (eg, 119) is not included in the call connection request message, the MSC (Mobile Switching Center) cannot recognize that the call is an emergency call, so if the user is in an arrears shutdown state, the MSC will reject the call. Continuation of the call
[0007] Since the existing call connection method does not support emergency call connection, it is necessary to design a new connection method for emergency calls

Method used

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  • Method and device for connecting urgent call in wireless network
  • Method and device for connecting urgent call in wireless network
  • Method and device for connecting urgent call in wireless network

Examples

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Embodiment Construction

[0020] Let me explain a few concepts first,

[0021] -Emergency call related information: including emergency call routing information, preferably including emergency call indication information;

[0022] -Emergency call routing information: the routing number of the emergency call control device (such as the emergency center), with which the MSC can successfully route the connection request message to the emergency center;

[0023] -Emergency call indication information: including emergency number and / or emergency call identification, through which the MSC can know whether the call is an emergency call, which will be described in more detail below with reference to the accompanying drawings.

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] Fig. 1 is a schematic diagram of a network for connecting an ongoing emergency call according to a specific embodiment of the present invention. Wherein, for ...

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Abstract

This invention provides a method and a device for receiving urgent sessions, in which, an urgent center sends an informing message to a user device including related information to the session, and the user device generates a requirement for anwsering the urgent session after switch to realize talking on the urgent session.

Description

technical field [0001] The present invention relates to a wireless network, in particular to a method and a corresponding device for connecting an emergency call in the wireless network. Background technique [0002] In IP Multimedia Subsystem (IMS) / Multimedia Voice Domain (MMD) applications, the user is often in a mobile state, and it often occurs when the user who is talking moves from the wireless network (such as WLAN) to the circuit switched domain (CS Domain) , a switchover has occurred. At this time, voice call connection (VCC) needs to be performed. [0003] Here, we divide voice calls into two categories: emergency calls and ordinary calls. Emergency calls are, for example, 110 (China) or 911 (United States). Due to their particularity, users who are shut down due to arrears or other reasons can still make emergency calls normally; ordinary calls, collectively referred to as voice calls other than emergency calls. [0004] In the prior art, there is already good ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/22H04Q7/38H04W4/90
CPCH04W76/007H04W4/22H04W36/0022H04W4/90H04W76/50
Inventor 柳晶
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD