WO2016078373A1 - Procédé et appareil de reconnaissance d'influence de défaillance de passerelle pdn sur une connexion pdn par une entité de gestion de mobilité - Google Patents

Procédé et appareil de reconnaissance d'influence de défaillance de passerelle pdn sur une connexion pdn par une entité de gestion de mobilité Download PDF

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Publication number
WO2016078373A1
WO2016078373A1 PCT/CN2015/079446 CN2015079446W WO2016078373A1 WO 2016078373 A1 WO2016078373 A1 WO 2016078373A1 CN 2015079446 W CN2015079446 W CN 2015079446W WO 2016078373 A1 WO2016078373 A1 WO 2016078373A1
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WO
WIPO (PCT)
Prior art keywords
mme
pgw
mobile terminal
office
context
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PCT/CN2015/079446
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English (en)
Chinese (zh)
Inventor
陶望胜
李翔
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中兴通讯股份有限公司
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Publication of WO2016078373A1 publication Critical patent/WO2016078373A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0079—Transmission or use of information for re-establishing the radio link in case of hand-off failure or rejection

Definitions

  • the present invention relates to the field of Tracking Area Update (TAU), and particularly relates to a packet that is transmitted by an old office in a subsequent inter-office TAU process after a packet data gateway (PGW: Packet Data Network Gateway) fails.
  • PGW Packet Data Network Gateway
  • a method and apparatus for whether a data network (PDN: Packet Data Network) connection is affected by a PGW failure is affected by a PGW failure.
  • VoLTE Voice over Long Term Evolution
  • VoIP Voice over Long Term Evolution
  • 4G network if a voice service adopts a VoLTE voice solution, in order to ensure low delay and high reliability of the voice service, the VoLTE bearer needs to pay special attention to its fault recovery time and the VoLTE bearer when the peripheral network element fails. influences.
  • MME Mobility Management Entity
  • An object of the present invention is to provide a method and a device for an MME to identify that a PDN connection is affected by a PGW fault, and to solve an inter-office TAU procedure in which a mobile terminal switches from an old MME to a new MME in a PGW failure time.
  • the new office cannot identify whether the PDN connection is affected by the PGW failure.
  • the MME new office cannot identify the problem that the PDN connection is established before the PGW failure or after the failure.
  • a method for an MME to identify that a PDN connection is affected by a PGW failure including:
  • the MME new office receives the tracking area update TAU request sent by the mobile terminal when the inter-office handover of the mobile terminal from the mobile management entity MME to the MME new office occurs;
  • the MME new office obtains, according to the TAU request, whether the packet data network PDN connection is affected by the PGW fault, and the packet data gateway PGW fault impact information is obtained from the MME old office;
  • the MME new office performs the PDN connection process according to the PGW failure impact information acquired from the old MME.
  • the step of obtaining, by the MME, the PGW fault influence information that is affected by the PGW fault from the MME, according to the TAU request includes:
  • the MME After receiving the TAU request, the MME sends a context request message to the old MME;
  • the MME new office receives a context response message that includes the PGW failure impact message sent by the MME old office according to the context request message.
  • the MME new office performs the PDN connection processing according to the PGW fault impact information acquired from the old MME, and the MME new office according to the PGW fault in the PDN context response message.
  • Impact information the sending TAU is rejected to the mobile terminal, or after the TAU is completed, the Evolved Packet System (EPS) bearer context request message is sent to the mobile terminal, carrying the cause value #39 "reactivation requested", so as to The mobile terminal performs corresponding processing according to the TAU reject or deactivate EPS bearer context request instruction.
  • EPS Packet System
  • the MME new office sends a TAU to the mobile terminal according to the PGW failure impact information in the PDN context response message, or sends a deactivation to each PDN connection affected after the TAU is completed.
  • the EPS bearer context request message is sent to the mobile terminal, and the step of carrying the cause value #39 "reactivation requested" includes:
  • the MME new office determines, according to the PGW fault impact information, that all PDN connections are affected by the PGW fault, or that part of the PDN connection is affected by the PGW fault;
  • a deactivated EPS bearer context request message command is sent to the mobile terminal for each affected PDN connection, carrying the cause value #39 "reactivation requested".
  • the step of the mobile terminal performing corresponding processing according to the TAU rejecting or deactivating an EPS bearer context request instruction includes:
  • the mobile terminal If the mobile terminal receives an instruction of TAU rejection, the mobile terminal reattaches the MME new office;
  • the mobile terminal If the mobile terminal receives the deactivated EPS bearer context request command and the cause value is #39 "reactivation requested", the mobile terminal reactivates for the PDN connection.
  • a method for an MME to identify that a PDN connection is affected by a PGW failure including:
  • the MME old office sends a context response message including the PGW failure impact message to the MME according to the context request message from the MME new office. a new office, so that the MME new office performs the PDN connection processing according to the context response message.
  • the context response message that includes the PGW failure impact message sent by the MME, according to the context request message includes:
  • the step of sending a context response message including the PGW failure impact information to the MME new office according to the acquired PDN context includes:
  • the fault is identified in the context response message or the PGW address is not carried, and then sent to the new MME.
  • an apparatus for an MME to identify that a PDN connection is affected by a PGW failure including:
  • the update module is configured to receive, when the mobile terminal switches from the MME to the MME new office, the MME new office receives the TAU request sent by the mobile terminal;
  • Obtaining a module configured to: obtain, by the MME, the PGW fault impact information that is affected by the PGW fault from the old MME according to the TAU request;
  • the processing module is configured to perform, by the MME new office, the PDN connection processing according to the PGW failure impact information acquired from the old MME.
  • the acquiring module further includes:
  • a requesting sub-module configured to: after receiving the TAU request by the MME new office, the context request message is sent to the MME old office;
  • the receiving submodule is configured to receive, by the MME new office, a context response message that includes the PGW failure impact message sent by the MME old office according to the context request message.
  • the processing module further includes:
  • An instruction submodule configured to send, by the MME new office, a TAU reject command to the mobile terminal according to the PGW fault impact information in the PDN context response information, or send, after the TAU is completed, for each affected PDN connection
  • the live EPS bearer context request message is sent to the mobile terminal, carrying the cause value #39 "reactivation requested", so that the mobile terminal performs corresponding processing according to the TAU reject or deactivate EPS bearer context request instruction.
  • an apparatus for an MME to identify that a PDN connection is affected by a PGW failure including:
  • the response module is configured to send a context response including a PGW failure impact message according to a context request message from the MME new office when an inter-office handover of the mobile terminal from the old mobility management entity MME to the MME new office occurs Sending a message to the MME new office, so that the MME new office performs the PDN connection process according to the context response message.
  • the response module further includes:
  • the MME is configured to acquire, according to the mobile terminal identifier in the context request message, a PDN context that is adapted to the mobile terminal identifier;
  • the fault submodule is configured to send a context response message including the PGW fault impact information to the MME new office according to the acquired PDN context.
  • the embodiment of the present invention provides a method for quickly identifying that a PDN is affected by a PGW fault by using an inter-office TAU, and in an inter-office TAU process at a PGW failure time,
  • the new office can identify whether the PDN connection is affected by the PGW fault, and can quickly recover the user bearer, especially the VoLTE bearer, so as to avoid long-term adverse effects on the voice service.
  • FIG. 1 is a schematic diagram 1 of a method for an MME to identify a PDN connection affected by a PGW fault according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram 2 of a method for an MME to identify that a PDN connection is affected by a PGW fault according to an embodiment of the present invention
  • FIG. 3 is a structural diagram 1 of an apparatus for identifying, by an MME, that a PDN connection is affected by a PGW fault according to an embodiment of the present invention
  • FIG. 4 is a second structural diagram of an apparatus for identifying, by a MME, that a PDN connection is affected by a PGW fault according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a network for identifying, by a MME, a PGW fault that is affected by a PGW fault according to an embodiment of the present invention
  • FIG. 6 is a flowchart of an MME identifying an inter-office TAU identification PGW fault affected by a PGW fault according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram 1 of a method for an MME to identify a PDN connection affected by a PGW fault according to an embodiment of the present invention. As shown in FIG. 1 , the specific steps on the new MME side are as follows:
  • Step S101 The MME new office receives the TAU request sent by the mobile terminal when the inter-office handover of the mobile terminal from the old MME to the new MME occurs.
  • Step S102 The MME new office obtains, according to the TAU request, the PGW fault influence information that is affected by the PGW fault from the old MME.
  • step S102 after receiving the TAU request, the MME sends a context request message to the MME;
  • the MME new office receives a context response message that includes the PGW failure impact message sent by the MME old office according to the context request message.
  • Step S103 The MME new office performs the PDN connection processing according to the PGW failure impact information acquired from the old MME.
  • step S103 the MME new office sends a TAU reject command to the mobile terminal according to the PGW fault influence information in the context response message, or sends a deactivated EPS for each affected PDN connection after the TAU is completed.
  • the bearer context request message is sent to the mobile terminal, carrying the cause value #39 "reactivation requested", so that the mobile terminal performs corresponding processing according to the TAU reject or deactivate the EPS bearer context request instruction.
  • the MME new office sends a TAU reject command to the mobile terminal according to the PGW fault influence information in the context response message, or sends a deactivation for each affected PDN connection after the TAU is completed.
  • the EPS bearer context request message is sent to the mobile terminal, and the step of carrying the cause value #39 "reactivation requested" includes:
  • the MME new office determines, according to the PGW fault impact information, that all PDN connections are affected by the PGW fault, or that part of the PDN connection is affected by the PGW fault;
  • the transmission sends a deactivated EPS bearer context request message command to the mobile terminal for each affected PDN connection after the completion of the TAU, carrying the cause value #39 "reactivation requested".
  • the step of the mobile terminal performing the corresponding processing according to the TAU rejecting or deactivating the EPS bearer context request message instruction includes:
  • the mobile terminal If the mobile terminal receives an instruction of TAU rejection, the mobile terminal reattaches the MME new office;
  • the mobile terminal If the mobile terminal receives the deactivated EPS bearer context request command and the cause value is #39 "reactivation requested", the mobile terminal reactivates the PDN connection.
  • FIG. 2 is a schematic diagram of a method for the MME to identify that a PDN connection is affected by a PGW fault according to an embodiment of the present invention. As shown in FIG. 2, the specific steps on the old MME side are as follows:
  • Step S201 When an inter-office handover occurs when the mobile terminal switches from the mobile management entity MME to the MME new office, the MME old office sends a context response message including the PGW failure impact message according to the context request message from the MME new office.
  • the MME new office is configured, so that the MME new office performs the PDN connection processing according to the context response message.
  • step S201 the context response message that includes the PGW failure impact message sent by the MME, according to the context request message, includes:
  • the step of sending a context response message including the PGW failure impact information to the MME new office according to the acquired PDN context includes:
  • the fault is identified in the context response message or the PGW address is not carried, and then sent to the new MME.
  • FIG. 3 is a structural diagram of an apparatus for identifying, by the MME, that a PDN connection is affected by a PGW fault according to an embodiment of the present invention. As shown in FIG. 3, the method includes: an update module, an obtaining module, and a processing module.
  • the update module is configured to receive a TAU request sent by the mobile terminal when the inter-office handover of the mobile terminal from the old MME to the MME new office occurs.
  • the acquiring module is configured to obtain, according to the TAU request, the PGW fault influence information that is affected by the PGW fault from the old MME.
  • the request sub-module of the acquiring module is configured to send a context request message to the MME old office after the MME new office receives the TAU request.
  • the receiving sub-module of the acquiring module is configured to receive, by the MME new office, a context response message that includes the PGW failure impact message sent by the MME according to the context request message.
  • the processing module is configured to perform, by the MME new office, the PDN connection processing according to the PGW failure impact information acquired from the old MME.
  • the instruction sub-module of the processing module is configured to send, by the MME new office, a TAU reject command to the mobile terminal according to the PGW fault influence information in the context response message, or for each affected one after the TAU is completed.
  • the PDN connection sends a deactivated EPS bearer context request message command to the mobile terminal, carrying the cause value #39 "reactivation requested", so that the mobile terminal performs corresponding processing according to the TAU reject or deactivate EPS bearer context request instruction.
  • FIG. 4 is a second structural diagram of an apparatus for identifying, by a MME, a PDN connection that is affected by a PGW fault according to an embodiment of the present invention.
  • the response module is configured to be in a mobile terminal from a mobility management entity MME.
  • MME mobility management entity
  • the MME old office sends a context response message including the PGW failure impact message to the MME new office according to the context request message from the MME new office, so that the MME new office
  • the context response message performs the PDN connection process.
  • the obtaining sub-module of the response module is configured to acquire, by the MME, the PDN context that is adapted to the mobile terminal identifier according to the mobile terminal identifier in the context request message.
  • the fault submodule of the response module is configured to send a context response message including the PGW fault impact information to the MME new office according to the acquired PDN context.
  • FIG. 5 is a schematic diagram of a network in which the MME identifies that the PDN connection is affected by the PGW fault and the identified PGW is faulty.
  • the user equipment UE: User Equipment
  • the SGW Signaling Gate Way
  • detects whether the PGW is faulty for example, the PGW restarts, or the link is faulty, etc.
  • the PGW sends the PGW whether there is a faulty information to the SGW, and the SGW informs the MME of the old office.
  • the MME old office records the faulty PGW and SGW address into the PGW fault table.
  • the UE When the UE is handed over from the MME to the MME, the UE sends a TAU request for obtaining the PDN connection to the MME new office. After receiving the TAU request, the MME sends a Context Request message to the MME. The old MME obtains the PDN context adapted to the UE identifier according to the UE identifier in the Context Request, and searches for the PGW fault list according to the SGW address and the PGW address recorded in the PDN context. If found, the PDN connection is indicated. Fault, otherwise it means that this PDN connection is not faulty.
  • the MME in response to the context response message Context Response, informs the MME whether the PGW failure has an impact on the bearer user context, so that the MME new office adopts corresponding measures for recovery, specifically, notifying the UE.
  • the corresponding fault bearer requires the user to re-attach or require the UE to re-activate the PDN connection.
  • FIG. 6 is a flowchart of an MME identifying an inter-office TAU identification PGW fault affected by a PGW fault according to an embodiment of the present invention.
  • the MME old office improves the General Tunneling Protocol (GTP2: GPRS Tunnelling Protocol) message. That is, in the PDN context in the Context Response message, the indication that the PGW is affected is added (adding the affected identifier or not carrying the PGW address), and when the MME new office processes the PDN connection, if the bearer is found to be affected by the PGW fault, The measures are used for recovery. Specifically, the user equipment is notified to perform the corresponding fault bearer, and the user is required to re-attach, or the UE is required to re-activate the PDN connection.
  • GTP2 General Tunneling Protocol
  • the MME determines that the PGW where the PDN context is located is restarted, and the PDN bearer is unavailable.
  • the Context Response message is returned, the PGW is added to the corresponding PDN context. Set or not carry the PGW address); when the MME new office processes the PDN connection, You can check the affected situation and take measures to recover. Make the following specific modifications based on the existing process, the specific process is as follows:
  • Step S601 The MME new office requests the context from the old MME with the original TAU process
  • Step S602 The MME old office receives the context request message Context Request, and when responding to the context response message Context Response message, determines whether its PDN connection is affected by the PGW restart.
  • the old MME determines that a PDN connection is affected by the PGW failure
  • the PDN context is filled in
  • the indication that the PGW is affected is added (the new identifier is set or does not carry the PGW address).
  • Step S603 The MME new office determines, according to the received context response message Context Response, that the PDN is affected by the PGW failure, and sends an instruction that the TAU rejects or accepts to the mobile terminal, so that the mobile terminal uses corresponding measures for recovery, specifically, notifying the mobile
  • the terminal performs a corresponding fault bearer, requires the user to reattach, or requires the mobile terminal to reactivate the PDN connection.
  • the present invention provides a method for quickly identifying that a PDN is affected by a PGW fault by using an inter-office TAU.
  • a PGW fails, the mobile terminal switches from the old MME to the MME.
  • the MME can identify whether the PDN connection is affected by the PGW fault, and can quickly recover the user bearer, especially the VoLTE bearer, so as to avoid long-term adverse effects on the voice service.
  • the technical solution provided by the embodiment of the present invention can be applied to identify whether the PDN is affected by the PGW fault, and provide a method for quickly identifying the PDN affected by the PGW fault by using the inter-office TAU.
  • the inter-office TAU process occurs, and the new The office can identify whether the PDN connection is affected by the PGW fault, and can quickly recover the user bearer, especially the VoLTE bearer, so as to avoid long-term adverse effects on the voice service.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un appareil permettant de reconnaître l'influence d'une défaillance de passerelle PDN sur une connexion PDN (réseau de données par paquets) par une entité de gestion de mobilité (MME). La présente invention a trait au domaine de la mise à jour de zone de localisation. Le procédé selon l'invention comprend les étapes suivantes : lorsqu'une entité de gestion inter-mobilité d'un terminal mobile commute d'une ancienne MME à une nouvelle MME, la nouvelle MME reçoit une demande de mise à jour de zone de localisation (TAU) envoyée par le terminal mobile ; la nouvelle MME acquiert des informations d'influence de défaillance de passerelle PDN indiquant si une connexion de réseau de données par paquets est influencée par la défaillance de passerelle PDN de l'ancienne MME, en fonction de la demande TAU ; et la nouvelle MME exécute un traitement de connexion PDN en fonction des informations d'influence de défaillance de passerelle PDN acquises de l'ancienne MME. La présente invention concerne également un procédé permettant à la nouvelle MME de rétablir rapidement un support utilisateur, en particulier de rétablir un support VoLTE par reconnaissance rapide de l'influence de la défaillance de passerelle PDN sur le PDN, de sorte à éviter une influence néfaste à long terme sur un service vocal.
PCT/CN2015/079446 2014-11-21 2015-05-21 Procédé et appareil de reconnaissance d'influence de défaillance de passerelle pdn sur une connexion pdn par une entité de gestion de mobilité WO2016078373A1 (fr)

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CN201410670612.1 2014-11-21
CN201410670612.1A CN105682155B (zh) 2014-11-21 2014-11-21 一种mme识别pdn连接受pgw故障影响的方法及装置

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CN108282827B (zh) * 2017-01-06 2022-07-12 北京三星通信技术研究有限公司 用于网络间互操作的方法、节点及设备
CN109818766B (zh) * 2017-11-21 2022-08-16 中兴通讯股份有限公司 一种通信方法、网络功能实体、网络功能仓储及计算机可读存储介质

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CN101541097A (zh) * 2008-03-19 2009-09-23 华为技术有限公司 恢复承载的方法、装置及系统
WO2009117886A1 (fr) * 2008-03-26 2009-10-01 华为技术有限公司 Procédé et système de notification de réinitialisation de dispositif, passerelle de desserte et de données par paquet et élément de gestion de mobilité
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