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WO2008116373A1 - Procédé de traitement de service d'urgence - Google Patents

Procédé de traitement de service d'urgence Download PDF

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Publication number
WO2008116373A1
WO2008116373A1 PCT/CN2008/000246 CN2008000246W WO2008116373A1 WO 2008116373 A1 WO2008116373 A1 WO 2008116373A1 CN 2008000246 W CN2008000246 W CN 2008000246W WO 2008116373 A1 WO2008116373 A1 WO 2008116373A1
Authority
WO
WIPO (PCT)
Prior art keywords
cscf
network
emergency service
service request
emergency
Prior art date
Application number
PCT/CN2008/000246
Other languages
English (en)
Chinese (zh)
Inventor
Zhendong Li
Original Assignee
Zte Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Publication of WO2008116373A1 publication Critical patent/WO2008116373A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/50—Connection management for emergency connections

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a method for processing user emergency services in an IP Multimedia Subsystem (IMS).
  • IMS IP Multimedia Subsystem
  • the premise of the present invention is that the user equipment (UE, User Equipment) uses a single IP (Simple IP).
  • the problem to be solved by the present invention is to provide a method for processing an emergency service, which is capable of handling an emergency service initiated by a P-CSCF on a home network while a user is visiting a network.
  • the present invention provides a method for processing an emergency service, including: initiating an emergency service request when the user equipment UE roams, and when the proxy call session control function P-CSCF serving the UE is in the home network, The home network P-CSCF or the home network service call session control function S-CSCF or the home network emergency call session control function E-CSCF notifies the UE that it is not on the same network as the P-CSCF, triggering the UE to re-find the visited network P -CSCF or switch to the circuit switched CS domain to re-initiate emergency services.
  • the method further includes the following steps:
  • a user terminal in the visited network UE initiates an emergency service request to the proxy call session control function P-CSCF serving the UE in the home network;
  • the UE receives a notification message from the P-CSCF, where the notification message carries information that the P-CSCF serving the UE is not in the visited network where the UE is located;
  • the UE re-finds a P-CSCF on the visited network, or the UE switches to the circuit switched CS domain to initiate an emergency service.
  • the emergency service request is an emergency registration.
  • the P-CSCF in the step (a) finds that it is not in the visited network where the UE is located, and sends a notification message to the UE, where the notification message carries the P-CSCF not in the UE.
  • the information in the visited network is not in the visited network where the UE is located.
  • the P-CSCF determines whether the UE is in the same network as itself by using the access network information or the IP address of the UE.
  • the P-CSCF in the step (a) forwards the emergency service request to the serving call session control function S-CSCF of the UE home network, and the S-CSCF receives the After the emergency service request, it is found that the P-CSCF is not in the visited network where the UE is located, and the S-CSCF sends a notification message to the P-CSCF, where the notification message carries information that the P-CSCF is not in the visited network where the UE is located.
  • the P-CSCF forwards the notification message to the UE.
  • the S-CSCF determines whether the UE is related to the P- by using the access network information of the UE and the network information of the P-CSCF, or by using an IP address of the UE and an address of the P-CSCF.
  • the CSCF is on the same network.
  • the P-CSCF in the step (a)
  • the emergency service request is forwarded to the emergency call session control function E-CSCF of the UE home network, and after receiving the emergency service request, the E-CSCF finds that the P-CSCF is not in the visited network where the UE is located, E-CSCF Sending a notification message to the P-CSCF, where the notification message carries information that the P-CSCF is not in the visited network where the UE is located, and the P-CSCF forwards the notification message to the UE.
  • the E-CSCF determines whether the UE is related to the P- by using the access network information of the UE and the network information of the P-CSCF, or by using an IP address of the UE and an address of the P-CSCF.
  • the CSCF is on the same network.
  • the notification message in step (b) is an emergency service request response.
  • the UE after the visited network re-discovers the P-CSCF, the UE initiates an emergency service request or an IP multimedia subsystem IMS registration request to the P-CSCF.
  • the present invention proposes a method for processing an emergency service.
  • the UE When a user roams to a visited network, and the P-CSCF is in the home network, the UE is informed by the P-CSCF, the S-CSCF or the E-CSCF, and the requested P-CSCF.
  • the user is not in the same network, and the user UE re-searches the P-CSCF of the visited network or switches to the CS domain to re-initiate the emergency service, thereby solving the problem in the prior art that the UE and the P-CSCF are not in the same network.
  • Business problem The advantage of the present invention is that the decision point is in the network, the judgment is very simple, and the changes to the system are very small. BRIEF abstract
  • Figure 1 is a 3GPP2 emergency call architecture diagram
  • FIG. 2 is an example of a P-CSCF and a PDSN/GGSN of a 3GPP2 IMS network belonging to different networks;
  • FIG. 3 is a first embodiment of the present invention, where the P-CSCF discovers that the UE is not in the same network, prompting the user to re-initiate the P-CSCF lookup. ;
  • the S-CSCF Server Call Session Control Function finds that the UE and the P-CSCF are not in the same network, and prompts the user to re-initiate the P-CSCF search;
  • FIG. 5 is a third embodiment of the present invention.
  • the E-CSCF finds that the UE and the P-CSCF are not in the same network, and prompts the user to re-initiate the P-CSCF lookup.
  • Preferred embodiment of the invention
  • the UE (user terminal) is in the visited network, and the P-CSCF of the serving user UE is in the home network, which are two different networks.
  • Step 110 Initiating an emergency service request by the UE visiting the network, the request may be an emergency registration, or an emergency session establishment;
  • Step 120 The P-CSCF of the home network receives the emergency service request, and determines that it is not in the visited network where the UE is located, and can be determined by the IP address of the user UE, but is not limited to the IP address of the user UE, for example, Access network information that can pass through the UE;
  • Step 130 The P-CSCF of the home network sends an emergency service request response to the user UE, where the response message carries information that the P-CSCF is not in the network where the UE is located;
  • Step 140 After receiving the emergency service request response, the user UE determines that the user and the P-CSCF are not in the same network, and needs to re-discover a new P-CSCF in the visited network.
  • Step 150 The user UE initiates a new P-CSCF search process on the visited network.
  • Step 160 The user UE initiates an emergency service request or an IMS registration request to the P-CSCF found in the visited network, and the subsequent steps are consistent with the existing protocol process.
  • step 140 after receiving the emergency service request response, the user UE determines that the user and the P-CSCF are not in the same network, and the UE can switch to the circuit switch (CS) domain.
  • the emergency service using the CS domain ends.
  • the second embodiment usually does not receive an emergency service request from the S-CSCF of the home network, but in some cases In this case, the S-CSCF may also receive.
  • this embodiment provides a processing flow when the S-CSCF receives an emergency service request.
  • FIG. 4 shows an example of a signaling procedure of the present invention. When the S-CSCF of the home network receives an emergency service request, it is found that the P-CSCF and the UE are not in the same network.
  • the message processing steps are as follows:
  • Step 210 Initiating an emergency service request by the UE that visits the network, where the request may be an emergency registration or an emergency session establishment;
  • Step 220 The P-CSCF of the home network forwards the request to the S-CSCF of the user UE home network;
  • Step 230 The S-CSCF of the home network receives the emergency service request, and determines that the P-CSCF is not in the visited network where the UE is located, which may be determined by the access network information of the UE and the network information of the P-CSCF. It can also be determined by the IP address of the user UE and the P-CSCF address, but is not limited thereto;
  • Step 240 The S-CSCF of the home network sends an emergency service request response to the P-CSCF of the home network, where the response carries information that the P-CSCF is not in the visited network where the UE is located;
  • Step 250 The P-CSCF of the home network forwards the emergency service request response to the user UE.
  • Step 270 The user UE initiates a new P-CSCF search process on the visited network.
  • Step 280 The user UE initiates an emergency service request or an IMS registration request to the P-CSCF found in the visited network, and the subsequent steps are consistent with the existing protocol process.
  • step 260 after receiving the emergency service request response, the user UE determines that the user and the P-CSCF are not in the same network, and the UE can switch to the circuit switch (CS) domain.
  • the emergency service using the CS domain ends.
  • FIG. 5 shows an example of a signaling procedure of the present invention.
  • Step 310 Initiating an emergency service request by the UE that visits the network, where the request may be an emergency registration or an emergency session establishment;
  • Step 320 The P-CSCF of the home network forwards the request to the E-CSCF of the home network of the user UE;
  • Step 330 The E-CSCF of the home network receives the emergency service request, and determines that the P-CSCF is not in the visited network where the UE is located, which may be determined by the access network information of the UE and the network information of the P-CSCF. It can be determined by the IP address of the user UE and the P-CSCF address, and is not limited thereto;
  • Step 340 The E-CSCF of the home network sends an emergency service request response to the P-CSCF, where the answer carries information that the P-CSCF is not in the visited network where the UE is located;
  • Step 350 The P-CSCF of the home network forwards the emergency service request response to the user UE.
  • Step 370 The user UE initiates a new P-CSCF search process on the visited network.
  • Step 380 The user UE initiates an emergency service request or an IMS registration request to the P-CSCF found in the visited network, and the subsequent steps are consistent with the existing protocol process.
  • step 360 after receiving the emergency service request response, the user UE determines that the user and the P-CSCF are not in the same network, and the UE can switch to the circuit switch (CS) domain.
  • the emergency service using the CS domain ends.
  • the P-CSCF or the S-CSCF or the E-CSCF is not limited to using the emergency service request response message to carry information that the P-CSCF is not in the network where the UE is located, or may create a new notification message for notification.
  • the information that the UE does not have the P-CSCF in the network where the UE is located may be embodied in various other various modifications and changes without departing from the spirit and scope of the invention. And modifications are intended to fall within the scope of the appended claims.
  • the UE when the user UE roams to the visited network, and the P-CSCF is in the home network, the UE is notified by the P-CSCF, the S-CSCF or the E-CSCF that it is not on the same network as the requested P-CSCF.
  • the UE is re-searched for the P-CSCF of the visited network or switched to the CS domain, and the emergency service is re-initiated, thereby solving the problem that the UE and the P-CSCF are not in the same network and cannot perform emergency services in the prior art.
  • the invention realizes the single order, and the modification to the system is very small.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Public Health (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de traitement de service d'urgence. Ce procédé peut traiter un service d'urgence amorcé par un utilisateur alors que l'utilisateur est dans un réseau visité et qu'une P-CSCF est dans un réseau familial. Le procédé consiste: à amorcer une demande de service par un dispositif utilisateur lors de l'itinérance, et à informer ce dispositif que le réseau auquel il appartient est différent du réseau auquel la P-CSCF appartient par le biais de la P-CSCF du réseau familial ou de la fonction de commande de la session d'appel de desserte (S-CSCF) du réseau familial ou de la fonction de commande de la session d'appel d'urgence (E-CSCF) du réseau familial lorsque la fonction de commande de la session d'appel mandataire (P-CSCF) desservant le dispositif utilisateur se trouve dans le réseau familial, et à déclencher le dispositif utilisateur pour qu'il retrouve la P-CSCF du réseau visité ou à le commuter vers le domaine de session de commande de commutation de circuit, par réinitialisation du service d'urgence.
PCT/CN2008/000246 2007-03-26 2008-01-31 Procédé de traitement de service d'urgence WO2008116373A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2007100888450A CN101277518B (zh) 2007-03-26 2007-03-26 一种紧急业务的处理方法
CN200710088845.0 2007-03-26

Publications (1)

Publication Number Publication Date
WO2008116373A1 true WO2008116373A1 (fr) 2008-10-02

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WO (1) WO2008116373A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101577890B (zh) * 2008-11-11 2011-08-10 中兴通讯股份有限公司 一种紧急业务会话的切换方法及紧急业务系统
CN101800960B (zh) * 2009-02-10 2014-03-12 中兴通讯股份有限公司南京分公司 一种紧急业务会话的切换方法及紧急业务系统
CN101848449B (zh) * 2009-03-24 2013-12-04 华为技术有限公司 用户管理和状态保持方法、装置及系统
CN101873561A (zh) * 2009-04-27 2010-10-27 华为技术有限公司 一种紧急业务的实现方法及设备
CN101730037A (zh) * 2009-05-08 2010-06-09 中兴通讯股份有限公司 一种ip多媒体子系统业务的建立方法及系统
CN110972125A (zh) * 2019-11-27 2020-04-07 惠州Tcl移动通信有限公司 呼叫的方法、装置、存储介质以及终端
CN114258129B (zh) * 2021-12-31 2024-09-27 展讯通信（上海）有限公司 终端注册方法及装置、存储介质、终端设备

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CN101277518A (zh) 2008-10-01
CN101277518B (zh) 2012-02-08

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