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WO2005008991A1 - Procede permettant d'assurer la coherence pendant la suppression du contexte pdp (protocole de donnees en paquets) - Google Patents

Procede permettant d'assurer la coherence pendant la suppression du contexte pdp (protocole de donnees en paquets) Download PDF

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Publication number
WO2005008991A1
WO2005008991A1 PCT/CN2004/000763 CN2004000763W WO2005008991A1 WO 2005008991 A1 WO2005008991 A1 WO 2005008991A1 CN 2004000763 W CN2004000763 W CN 2004000763W WO 2005008991 A1 WO2005008991 A1 WO 2005008991A1
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WO
WIPO (PCT)
Prior art keywords
pdp context
delete
request
ggsn
response
Prior art date
Application number
PCT/CN2004/000763
Other languages
English (en)
Chinese (zh)
Inventor
Yajuan Wu
Original Assignee
Huawei Technologies Co., Ltd.
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 Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2005008991A1 publication Critical patent/WO2005008991A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/06—Registration at serving network Location Register, VLR or user mobility server
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition

Definitions

  • the present invention relates to a packet data protocol (PDP) context processing process in a universal mobile communication system (UMTS), and in particular, to a method for ensuring consistency in a PDP context deletion process.
  • PDP packet data protocol
  • UMTS universal mobile communication system
  • the Universal Mobile Telecommunications System is a third-generation mobile communication system that uses Wideband Code Division Multiple Access (WCDMA) air interface technology.
  • WCDMA Wideband Code Division Multiple Access
  • the UMTS system is also commonly referred to as a WCDMA communication system.
  • FIG. 1 is a schematic diagram of a UMTS system.
  • the system includes: User Equipment (UE) 110, UMTS Terrestrial Radio Access Network (UTRAN) 120, and Core Network (CN) 140.
  • UE User Equipment
  • UTRAN UMTS Terrestrial Radio Access Network
  • CN Core Network
  • the front end of UTRAN 120 is connected to UE 110 through a Uu interface. This interface is a wireless air interface.
  • UTRAN 120 is connected to CN 140 through an Iu interface.
  • the UE 110 includes: a mobile phone (ME) and a SIM card (USIM), and the two constitute the UE 110 through a Cu electrical interface.
  • ME mobile phone
  • USIM SIM card
  • UTRAN 120 is used to process all radio-related functions, including: multiple base stations (Node B) 121, multiple radio network controllers (RNC) 122, and RNC 122 complete control and management functions of the base station.
  • Node B node B
  • RNC radio network controllers
  • RNC 122 complete control and management functions of the base station.
  • CN 130 handles all voice calls and data connections in the UMTS system, and implements switching and routing functions with external networks. It is logically divided into Circuit Switched Domain (CS) and Packet Switched Domain (PS) ). CN 130 bags Including: Mobile Switching Center / Visit Location Register (MSC VLR) 131, which performs functions such as control, management, authentication, and encryption of the cs domain. MSC network manager (GSMC) 132, which is responsible for connecting with other fixed or mobile networks. The serving GPRS support node (SGSN) 134 of the gateway GPRS support node (GGSN) 135, and the interface GGSN 135 with the external IP packet network 140.
  • the external IP packet network 140 may include PLMM, PSTN, ISDN, the Internet, and the like.
  • Packet Data Protocol is a general term for various protocols for transmitting packet data packets in discrete forms, such as the IP protocol and the X.25 protocol, which can be used for interaction between the external data network 140 and the CN 130, and interaction between the CN 130 network .
  • a PDP context is a collection of information stored for a session within a mobile station (MS) and a GPRS support node (GSN).
  • FIG. 2 is a flowchart of a prior art process for deleting a PDP context initiated by a GGSN. The process includes the following steps:
  • Step 201 The GGSN sends a delete PDP context request message to the SGSN.
  • Step 202 The SGSN sends a deactivation PDP context request message to the MS.
  • Step 203 The MS returns an accept deactivation PDP context message to the SGSN.
  • Step 204 The SGSN returns a delete PDP context response message to the GGSN.
  • Step 205 Release a radio access bearer (RAB) between the MS and the SGSN.
  • RAB radio access bearer
  • the RAB release process is responsible for #releasing radio access bearer resources.
  • the SGSN that received the request message will return the delete PDP context response message to the sender after processing.
  • the most important information is the cause value.
  • This IE Information Element, information element
  • Possible cause values that can be filled in the response message include:
  • the cause value in the response message is "Non existent", and the TEID field is filled with 0.
  • GGSN is an important supporting node of the packet domain in the GPRS and UMTS systems.
  • GTP protocol In addition to supporting the GTP protocol on the Gn / Gp interface, it also supports a variety of protocols on the Gi interface, including remote authentication dial-in access service (RADIUS).
  • the RADIUS protocol is used between servers to implement accounting and authentication functions.
  • the RADIUS protocol As a general-purpose protocol, the RADIUS protocol has been widely used on IP networks. Almost all GGSN devices provide support for the RADIUS protocol. Otherwise, service support will be greatly restricted. 3GPP TS 29.061 describes how to apply the RADIUS protocol on the Gi interface.
  • RADIUS is used to transfer information related to GPRS user sessions between the GGSN and an AAA server or service proxy server.
  • the application server needs to interact with the GGSN to request the termination of a specific PDP session.
  • Figure 3 The process includes the following steps:
  • Step 301 The AAA server or service proxy server sends a RADIUS Disconnect Request message to the GGSN.
  • Step 302 After receiving the message, the GGSN initiates a process of deleting the PDP context, and sends a delete PDP context request message (DeletePDPContextReq) to the SGSN.
  • DeletePDPContextReq a delete PDP context request message
  • Step 303 The SGSN returns a delete PDP context response message (DeletePDPContextRes) to the GGSN.
  • DeletePDPContextRes a delete PDP context response message
  • Step 304 The GGSN sends a RADIUS Disconnect Response (RADIUS Disconnect Response) message to the AAA server.
  • RADIUS Disconnect Response RADIUS Disconnect Response
  • the GGSN does not need to wait for the delete PDP context response message from the SGSN, and can send a RADIUS Disconnect Response message to the AAA server or the service proxy server.
  • a RADIUS Disconnect Response message will be returned to the AAA server, and the specific PDP context will be deleted at the same time to end the session.
  • the GGSN also needs to initiate a PDP context deletion request to the SGSN.
  • an object of the present invention is to provide a method for ensuring consistency in the context of packet data protocol deletion, enhance versatility, and reduce problems such as system resource waste caused by inconsistencies in PDP context processing.
  • a method for ensuring consistency in a packet data protocol (PDP) context deletion process includes the following steps:
  • the gateway GPRS support node sends a PDP context delete request to the serving GPRS support node (SGSN), and waits for the PDP context delete response returned by the SGSN;
  • the GGSN After receiving the delete PDP context response returned by the SGSN, the GGSN determines whether it is a deletion process initiated by the AAA server / service proxy server, and if so, deletes the specific PDP context directly; otherwise, according to the reason in the delete PDP context response (Cause) value, which is processed according to the agreement.
  • the method may further include: The GGSN directly deletes the specific PDP context after the deletion process initiated by the AAA server / service proxy server, and resends the delete PDP context request according to the cause value in the delete PDP context response.
  • the method for processing according to the protocol according to the deletion of the cause value in the PDP context response may be: When the cause value in the deletion of the PDP context response is 'Request accepted' or 'Does not exist, (' Non Existent '), delete the PDP context;
  • the service proxy server may be any network device having an interface with the GGSN, such as a proxy CSCF (Proxy-Call Session Control Function, P-CSCF) in an IP Multimedia Subsystem (IMS) network, on the Internet.
  • P-CSCF Proxy-Call Session Control Function
  • IMS IP Multimedia Subsystem
  • the WAP server, the proxy application server of the ISP / ICP interface, or the gateway of the circuit-switched network can be seen from the technical solution of the present invention.
  • the method for ensuring consistency in the context of the packet data protocol deletion process of the present invention is received at the GGSN. When deleting a PDP context response message from the SGSN, different processing is performed according to the reason for deletion.
  • FIG. 1 is a schematic diagram of a UMTS system
  • FIG. 2 is a flowchart of a prior art process for deleting a PDP context initiated by a GGSN
  • FIG. 3 is a flowchart of a PDP context deletion process initiated by a prior art AAA server
  • FIG. 4 is a preferred embodiment of the present invention for deleting a PDP context Schematic diagram of processing flow during the process.
  • the method for ensuring consistency in the context of packet data protocol context deletion when the GGSN receives a delete PDP context response message from the SGSN, different processing is performed according to the deletion reason. If it is an AAA server or other services
  • the deletion process caused by the request to delete the PDP session initiated by the proxy server the GGSN will delete the specific PDP context regardless of the cause value in the response message received. In other cases, the cause value is judged first, and then the decision is made whether to delete the PDP. Context.
  • FIG. 4 is a schematic flowchart of a process in a PDP context deletion process according to a preferred embodiment of the present invention.
  • the processing flow includes the following steps:
  • the gateway GPRS support node sends a delete PDP context request to the serving GPRS support node (SGSN), and waits for the PDP context and context response returned by the SGSN.
  • Step 402 After receiving the delete PDP context response returned by the SGSN, the GGSN determines whether the deletion process is initiated by the AAA server / service proxy server. If so, steps 403 to 405 are performed, otherwise, step 406 is performed.
  • Steps 403-405 directly delete the specific PDP context. Determine whether the cause value in the delete PDP context response is' Request accepted '(' Request accepted ') or' Not saved At ('Non existent'), if yes, then do not resend the delete PDP context request, and perform step 408;
  • the PDP context request mechanism is deleted according to a predetermined retransmission request, and the PDP context request is retransmitted. If the cause value in the PDP context response is deleted as' Invalid message format,
  • the GGSN can also construct a new delete PDP context request message and resend it to the SGSN, so as to ensure that the PDP context at the SGSN and GGSN is maintained Consistent.
  • the number of retransmissions, and the retransmission mechanism can be specifically implemented according to the actual situation. The above retransmission process is only one embodiment, and the actual application is not limited to this manner.
  • Step 406 Determine whether the cause value in the delete PDP context response is 'Request accepted' ('Request accepted') or 'Non existent', and if so, perform step 408, otherwise perform step 407 .
  • step 407 the PDP context is kept activated according to the protocol, and the PDP context is not deleted, and the process ends.
  • Step 408 After deleting the PDP context according to the protocol, the process ends.
  • the service proxy server may be any network device having an interface with the GGSN, such as a P-CSCF in an IMS network, a WAP server on the Internet, and a proxy application server with a public or private ISP / ICP interface, or a circuit. Gateway devices for switched networks, etc. Correspondingly, depending on the network device, the message to the GGSN requesting to disconnect is also sent. It is different, but the process of GGSN processing is the same.
  • new cause values may be added according to changes and increases in demand.
  • the existing principle value processing principles can also be followed to deal with the situation.
  • the method for ensuring consistency during the context of packet data protocol deletion in the present invention is an improved method for the existing implementation scheme.
  • the present invention determines whether GGSN processes a specific PDP context by distinguishing whether it is an AAA server and a service proxy server that deletes a PDP context, thereby avoiding inconsistencies in processing that may occur in the implementation, thereby being more versatile and capable of enhancing system resources Effective use. This improvement will not affect the existing GGSN equipment implemented according to the existing protocol, and the compatibility is good.

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  • Engineering & Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention se rapporte à un procédé permettant d'assurer la cohérence au cours de la suppression du contexte PDP (Protocole de données en paquets). Ce procédé comprend les étapes suivantes : (1) le noeud de support de passerelle GPRS (GGSN) envoie « une demande de suppression du contexte PDP » au noeud de support GPRS (SGSN) de service et attend la réponse ; (2) après avoir reçu la « réponse relative à la suppression du contexte PDP », GGSN estime si la suppression a commencé au moyen du serveur AAA et, si c'est le cas, supprime le contexte PDP particulier, ou alors effectue un traitement en fonction de la cause de la « réponse relative à la suppression du contexte PDP » et du protocole. Cette invention permet aussi de résoudre le problème irrégulier qui se produit lors de la suppression du contexte PDP. Par conséquent, elle a une portée plus universelle et permet d'améliorer l'efficacité du système. Elle ne brise pas le système GGSN en raison de la bonne compatibilité du protocole utilisé.
PCT/CN2004/000763 2003-07-17 2004-07-07 Procede permettant d'assurer la coherence pendant la suppression du contexte pdp (protocole de donnees en paquets) WO2005008991A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN03149590.7 2003-07-17
CNB031495907A CN100344168C (zh) 2003-07-17 2003-07-17 在分组数据协议上下文删除过程中保证一致性的方法

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WO2005008991A1 true WO2005008991A1 (fr) 2005-01-27

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CN101001262B (zh) * 2006-01-11 2011-11-09 上海原动力通信科技有限公司 Ip地址释放方法
CN101800969B (zh) * 2009-02-10 2013-10-02 华为技术有限公司 Pdn gw信息管理方法、相关设备及系统
KR102789295B1 (ko) * 2021-11-30 2025-04-01 씨제이제일제당 주식회사 식품 텍스쳐 측정 장치 및 식품 텍스쳐 측정 방법

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WO2001005171A1 (fr) * 1999-07-12 2001-01-18 Nokia Corporation Gestion de contexte d'acces pour enregistrement de macrogestion de la mobilite
WO2002093689A1 (fr) * 2001-05-17 2002-11-21 Nokia Corporation Dispositif et procede assurant la desactivation temporaire d'informations relatives aux abonnes
WO2003013165A1 (fr) * 2001-08-01 2003-02-13 Telefonaktiebolaget Lm Ericsson (Publ) Dispositif de nettoyage de contextes pdp en attente dans un noeud de support gprs de passerelle
EP1318633A2 (fr) * 2001-12-05 2003-06-11 Nec Corporation Terminal portable/mobile et méthode de gestion de contexte PDP associée à l'état connecté permanent

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Publication number Priority date Publication date Assignee Title
WO2001005171A1 (fr) * 1999-07-12 2001-01-18 Nokia Corporation Gestion de contexte d'acces pour enregistrement de macrogestion de la mobilite
WO2002093689A1 (fr) * 2001-05-17 2002-11-21 Nokia Corporation Dispositif et procede assurant la desactivation temporaire d'informations relatives aux abonnes
WO2003013165A1 (fr) * 2001-08-01 2003-02-13 Telefonaktiebolaget Lm Ericsson (Publ) Dispositif de nettoyage de contextes pdp en attente dans un noeud de support gprs de passerelle
EP1318633A2 (fr) * 2001-12-05 2003-06-11 Nec Corporation Terminal portable/mobile et méthode de gestion de contexte PDP associée à l'état connecté permanent

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CN1571533A (zh) 2005-01-26

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