WO2013104114A1 - Procédé, nœud et système pour gérer un dysfonctionnement partiel d'une entité de gestion de la mobilité - Google Patents

Procédé, nœud et système pour gérer un dysfonctionnement partiel d'une entité de gestion de la mobilité Download PDF

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Publication number
WO2013104114A1
WO2013104114A1 PCT/CN2012/070197 CN2012070197W WO2013104114A1 WO 2013104114 A1 WO2013104114 A1 WO 2013104114A1 CN 2012070197 W CN2012070197 W CN 2012070197W WO 2013104114 A1 WO2013104114 A1 WO 2013104114A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
routing area
idle mode
area update
request
Prior art date
Application number
PCT/CN2012/070197
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English (en)
Chinese (zh)
Inventor
陆峰
陈中平
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2012/070197 priority Critical patent/WO2013104114A1/fr
Priority to CN2012800002260A priority patent/CN103299692A/zh
Publication of WO2013104114A1 publication Critical patent/WO2013104114A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a method, a node, and a system for processing a failure of a mobility management entity.
  • the new core network includes three logical functions: a user mobility control management entity, a SGW (Serving Gateway), and a PGW (Public Data Networks Gateway), wherein the user mobility control management
  • the entity may specifically include an MME (Mobility Management Entity) and an SGSN (Serving General Packet Radio Service Support Node).
  • the user mobility control management entity has a function of allocating a temporary identity identifier and performing user signaling management for a user equipment accessing the core network
  • the SGW is specifically responsible for a local mobility anchor and lawful interception information, and the PGW. It is responsible for functions such as policy enforcement and billing, as well as lawful interception information.
  • a PDN (Packet Data Network) connection is a logical aggregation of one or more service data flows with the same APN (Access Point Name), specifically for carrying service data between the user equipment and the public data network. flow.
  • a PDN connection in a network element may be identified by a CSID (Connection Set Identifier) assigned by a network element, and is introduced to distinguish a CSID allocated by a different network element.
  • FQ-CSID Full qualified CSID
  • FQ-CSID is used to identify the network element and CSID combination of the CSID.
  • the CSID assigned by the MME can be expressed as MME FQ-CSID
  • the CSID allocated by the SGW can be expressed as SGW FQ-CSID, etc.
  • the MME, the SGW, and the PGW will all assign a corresponding FQ-CSID to the PDN connection, and send the FQ-CSID assigned by the PDN-CSID to the PDN-CSID by creating a PDN connection request message and/or creating a PDN connection response message.
  • the other network element so that after the PDN connection is established, the MME, the SGW, and the PGW save the established MME FQ-CSID, SGW FQ-CSID, and PGW FQ- in the context of the respective user equipment. CSID.
  • Partial Fai lure Partial failure
  • the existing EPS system provides a method for processing the MME when the Partial Failure occurs. The details are as follows: When the MME is in a partial failure, the MME will lose the PDN-connected MME FQ-CSID through the Delete Connection Set Request message.
  • the SGW forwards the received Delete Connection Set ReQuest message to the PGW; after receiving the Delete Connection Set Request message, the PGW sends all the PDN connection contexts corresponding to the carried MME FQ-CSID in the Delete Connection Set Request message from Deleting locally, and then returning a Delete Connection Set Response message to the SGW; after receiving the Delete Connection Set Response message returned by the SGW, the SGW will all the PDN connection contexts corresponding to the ⁇ E FQ-CSID Deleted locally, and then returns a Delete Connection Set Response message to the MME.
  • the SGW and the PGW synchronously delete all the PDN connection contexts corresponding to the MME FQ-CSID, and the user equipment cannot learn the MME, the SGW, and the PGW.
  • the PDN connection inside has been deleted.
  • the above-mentioned processing method in the case of partial failure in the MME has the following problems:
  • Problem 1 This will adversely affect the ongoing business of the user equipment. For example, when the user equipment is in the connected state and accesses the 2G/3G network, the corresponding PDN connection in the SGW and the PGW is deleted due to the Partial Failure of the MME. This will cause the user equipment to be currently in the 2G/3G service. Forced to interrupt, thus seriously affecting the user's business experience.
  • Question 2 The user equipment will be unreachable. For example, the user equipment is idle in the 2G/3G network. Because the PDN connection of the user equipment in the SGW and the PGW is deleted, the user is unreachable on the 2G/3G, which seriously affects the user's service experience. Summary of the invention
  • the embodiment of the present invention provides a method, a node, and a system for processing a partial failure of the mobility management entity. , to ensure the user's business experience.
  • the technical solution is as follows:
  • a method of handling a partial failure of a mobility management entity including:
  • the packet mode radio service support node associated with the idle mode restriction signaling receives a notification message indicating that the mobility management entity associated with the idle mode restriction signaling is partially failed by the user equipment;
  • the packet radio service support node performs an operation of deactivating idle mode restriction signaling to the user equipment.
  • a packet radio service support node, the node being associated with the idle mode restriction signaling comprising: a receiving module, configured to receive a notification message, where the notification message indicates that the user equipment is associated with the idle mode restriction signaling Partial failure of the mobility management entity;
  • a deactivation module configured to perform an operation of deactivating idle mode restriction signaling on the user equipment.
  • a system for processing a partial failure of a mobility management entity comprising: a packet radio service support node associated with an idle mode restriction signaling, a mobility management entity associated with an idle mode restriction signaling, and a serving gateway;
  • the mobility management entity or the service gateway is configured to send a notification message to the packet radio service support node, where the notification message is used to indicate that the mobility management entity where the user equipment is located partially fails;
  • the packet radio service support node is configured to receive a notification message, and perform an operation of deactivating idle mode restriction signaling to the user equipment.
  • FIG. 1 is a flowchart of a method for processing a partial failure of a mobility management entity according to Embodiment 1 of the present invention
  • FIG. 2 is a structural diagram of an EPS system according to Embodiment 2 of the present invention
  • FIG. 3 is a flowchart of a method for processing a partial failure of a mobility management entity according to Embodiment 2 of the present invention
  • FIG. 3b is a flowchart of a method for processing a partial failure of a mobility management entity according to Embodiment 2 of the present invention
  • FIG. 3 is a flowchart of a method for processing a partial failure of a mobility management entity according to Embodiment 2 of the present invention
  • FIG. 3 is a flowchart of a method for processing a partial failure of a mobility management entity according to Embodiment 2 of the present invention
  • FIG. 4 is a diagram of a device for supporting a packet radio service support node according to Embodiment 3 of the present invention
  • FIG. 5 is a block diagram of a packet radio service support node apparatus according to Embodiment 3 of the present invention.
  • FIG. 6 is a block diagram of a packet radio service support node apparatus according to Embodiment 3 of the present invention.
  • FIG. 7 is a schematic diagram of a system for processing a partial failure of a mobility management entity according to Embodiment 4 of the present invention. detailed description
  • a method for partially failing to move a dynamic management entity includes:
  • Step 101 The packet radio service supporting node associated with the idle mode restriction signaling receives a notification message, where the notification message indicates that the mobility management entity associated with the idle mode restriction signaling of the user equipment partially fails;
  • Step 102 packet radio The service service support node performs an operation of deactivating idle mode restriction signaling to the user equipment.
  • FIG. 2 it is an architecture diagram of an EPS system corresponding to an embodiment of the present invention, including GERAN (GSM/EDGE Radio).
  • GERAN GSM/EDGE Radio
  • the user mobility control management entity corresponding to GERAN/UTRAN and E-UTRAN namely, SGSN (Serving General Packet Radio Service Support Node) and MME (Mobi lity Management Entity, mobility management entity) are Coexisting.
  • SGSN Serving General Packet Radio Service Support Node
  • MME Mobility Management Entity
  • the GERAN/UTRAN or E-UTRAN When the UE (User Equipment) accesses the GERAN/UTRAN or E-UTRAN, the GERAN/UTRAN or E-UTRAN will select an SGSN or MME for the UE, and SGS or MN E selects an SGW for the UE (Serving Gateway) , Service Gateway) and PGW (Publ ic Data Networks Gateway, Public Data Network Gateway).
  • SGW Serving Gateway
  • PGW Publ ic Data Networks Gateway, Public Data Network Gateway
  • an ISR (Idle State Signaling Reduction) technology is proposed in the EPS.
  • the ISR technology can reduce the signaling amount of the mobility management process when the idle state UE resides in the boundary area of the GERAN/UTRAN and E-UTRA access systems.
  • the idle state refers to that there is no signaling connection between the UE and the user mobility control management entity corresponding to the current camping area.
  • the UE when the ISR is activated, the UE is simultaneously registered to the user mobility control management entity corresponding to the GERAN/UTRAN and E-UTRAN access systems respectively, that is, the SGSN and the MME, and then the UE in the idle state is in the SGSN.
  • the routing area allocated to the UE and the tracking area allocated by the MME to the UE are moved, there is no need to do general routing area update or generally
  • the update operation of the trace area can avoid the frequent update operation of the routing area or the tracking area that may be generated when the UE moves between the areas managed by the SGSN and the MME, and reduce air interface signaling.
  • the SGW when the ISR is activated, the SGW will retain the address information of the MME and the SGSN, and the MME and the SGSN mutually store the address information of the other party, and the UE sets the corresponding TIN (temporary identity used in Next update, the temporary identifier for the next update) Value to indicate ISR activation.
  • TIN temporary identity used in Next update, the temporary identifier for the next update
  • the SGW when the ISR is activated, when the SGW receives the downlink user plane or the control plane data packet of the UE, if the UE is in the connected state, the SGW directly forwards the data packet to the corresponding downlink according to the downlink path information. If the UE is in an idle state, the MME and the SGSN corresponding to the SGW condition page the UE according to the saved address information of the MME and the SGSN, such that the current UE resides in the E-UTRAN or the GERAN/UTRAN. The UE can respond to the paging message of the corresponding network in the network where the UE resides, so that the called service of the UE is reachable.
  • the method for processing the Partial Fai lure (partial failure) of the MME is processed.
  • the method is applicable to the EPS system shown in FIG. 2, and specifically includes the following steps:
  • Step 201 The MME associated with the ISR (hereinafter referred to as ⁇ E) detects that the Partial Fai lure is present, and sends a Delete PDN Connection Set Request message to the SGW.
  • ⁇ E The MME associated with the ISR
  • the Delete PDN Connection Set Request message carries the context global identifier MME FQ-CSID corresponding to the PDN connection context lost when the MME partially fails.
  • Step 202 After receiving the Delete PDN Connection Set Request message sent by the MME, the SGW keeps the PDN connection context corresponding to the MME FQ-CSID carried in the Delete PDN Connection Request message stored locally;
  • the PDN connection context corresponding to the MME FQ-CSID carried in the Delete PDN Connection Set Request message stored in the local storage may include, but is not limited to: the SGW queries the locally stored PDN connection context, if the Delete PDN Connection is included When the PDN connection context corresponding to the MME FQ-CSID carried in the Set Request message is sent, the SGW does not delete the PDN connection context corresponding to the MME FQ-CSID carried in the Delete PDN Connection Set Request message.
  • the SGW may start a timer, which is used to record the SGW maintenance.
  • the idle mode limits the time limit of the signaling ISR activation. Once the timer expires, the SGW performs the ISR deactivation process locally. Specifically, the SGW locally deletes the saved MME address information.
  • the SGW may notify the MME and the SGW when receiving the downlink data sent by the PGW before the timer expires.
  • the SGSN simultaneously sends a corresponding Downl ink Data Notification message to notify the MME.
  • the PGW of the SGSN has downlink data to be sent to the corresponding user equipment, so that the MME and the SGSN page the user equipment on both sides of the E-UTRAN and the GERAN/UTRAN.
  • the MME FQ-CSID carried in the Delete PDN Connection Set Request message may be a composite cell, including one or more MME FQ-CSIDs corresponding to the PDN connection context lost by the MME partial failure, and receiving The SGW to the Delete PDN Connection Set Request message may reserve one or more PDN connection contexts corresponding to the MME FQ-CSID included in the composite cell.
  • Step 203 The SGW sends the received Delete PDN Connection Set Request message to the PGW.
  • Step 204 The PGW receives the Delete PDN Connection Set Request message, and retains the PDN connection context corresponding to the MME FQ-CSID carried in the Delete PDN Connection Set Request message stored locally.
  • Step 205 The SGW sends a notification message to the SGSN associated with the ISR, where the notification message indicates that the mobility management entity associated with the ISR is partially failed.
  • the user equipment specifically refers to the loss of the PDN connection context when the MME partially fails.
  • the specific implementation of the step includes, but is not limited to, the following two implementation manners: Mode 1: After receiving the Delete PDN Connection Set Request message sent by the MN, the SGW sends a notification message to the SGSN associated with the ISR.
  • the name of the notification message sent by the SGW to the SGSN associated with the ISR may specifically be an MME Partial Fai lure Notification message, and the present invention does not limit the specific name of the notification message.
  • the notification message carries the identifier information of the user equipment that loses the PDN connection context when the MME partially fails, and the identifier information of the user equipment may be an IMSI (International Mobier Subscriber Identification Number) / or TEID (Tunnel Endpoint Identifier).
  • IMSI International Mobier Subscriber Identification Number
  • TEID Tel Endpoint Identifier
  • the SGW can learn the Delete PDN of the local storage.
  • the PDN connection context corresponding to the MME FQ-CSID carried in the Connection Set Request message, the SGSN information associated with the ISR and the identification information of the user equipment are obtained from the obtained PDN connection upper and lower, and then the SGSN associated with the ISR is obtained. Sending a notification message containing the identification information of the user equipment.
  • the SGW may send the notification message to the SGSN associated with the ISR based on the user granularity, that is, the notification message carries only one user equipment that loses the PDN connection when the MME part fails.
  • Identification information Specifically, the notification message carries the IMSI information of the user equipment that loses the PDN connection when the MME part fails, or the TEID field of the GTP-C message header of the notification message only fills in one SGSN as the MME part.
  • the SGSN of the interest may learn from the IMSI and/or the TEID that the user equipment that lost the PDN connection context when the MME partially fails. In this case, if there are a large number of user equipments that have lost the PDN connection when the MME part fails, the SGW needs to send multiple notification messages to the SGSN associated with the IRS, respectively, to inform the SGSN of the identification information of the user equipment that loses the PDN connection when each MME part fails. .
  • the SGW may send the notification message to the SGSN associated with the ISR based on the network element device granularity, that is, the notification message may carry the identification information of the user equipment that loses the PDN connection when the MME part fails, and the user equipment of the user equipment
  • the identification information may be specifically an IMSI of the user equipment, so that the SGSN that receives the notification message may learn, according to the multiple IMSIs, the user equipment that loses the PDN connection context when the MME partially fails.
  • the SGW can inform the SGSN that the MME fails to lose the identification information of the PDN-connected user equipment when the MME part fails, and can reduce the system signaling to a certain extent.
  • the notification message may further carry an MME Partial Failure indication, and notify the ISR that the SGSN MME part of the association fails.
  • the MME Partial Fai lure indicates that the specific implementation may carry an MME partial failure indication indicator (RFID) or carry an MME. Partial failure cause (Cause) cell.
  • Method 2 After receiving the Delete PDN Connection Set Request message sent by the MME, the SGW receives the downlink data sent by the PGW, and then sends a notification message to the SGSN.
  • the name of the notification message sent by the SGW to the SGSN may specifically be a Downlink Data Notification message (MME partial failure notification) message, and the present invention does not limit the specific name of the notification message.
  • MME partial failure notification MME partial failure notification
  • the notification message carries the identifier information of the user equipment that loses the PDN connection context when the MME part fails.
  • the identifier information of the user equipment may be an IMSI (International Mobile Subscriber Identification Number) and/or a TEID. (Tunnel Endpoint Identifier).
  • the SGW can learn the PDN connection context corresponding to the MME FQ-CSID carried in the locally stored Delete PDN Connection Set Request message, and learn the ISR association from the obtained PDN connection. And the SGSN information and the identifier information of the user equipment, and then, after receiving the downlink data of the user equipment corresponding to the identifier information of the user equipment delivered by the PGW, sending the identifier of the user equipment to the SGSN associated with the ISR The notification message of the information, where the downlink data includes downlink user plane data and/or downlink control plane data packet.
  • the SGW may send the notification message to the SGSN associated with the ISR based on the user granularity, that is, the notification message carries only one user equipment that loses the PDN connection when the MME part fails. Identification information. Specifically, the notification message carries the IMSI information of the user equipment that loses the PDN connection when the MME part fails, or the TEID field of the GTP-C message header of the notification message is filled in one time.
  • the SGSN is the TEID allocated by the user equipment that lost the PDN connection when the MME partially fails, so that the SGSN that receives the notification message can learn from the IMSI and/or TEID that the user equipment that lost the PDN connection context when the MME partially fails.
  • the SGW needs to send multiple notification messages to the SGSN associated with the IRS, respectively, to inform the SGSN of the identification information of the user equipment that loses the PDN connection when each MME part fails.
  • the notification message may further carry an MME Partial Failure indication, and notify the ISR that the SGSN MME part of the association fails.
  • the MME Partial Fai lure indicates that the specific implementation may carry an MME partial failure indication indicator (RFID) or carry an MME. Partial failure cause (Cause) cell.
  • step 205 may also be replaced by the following steps:
  • Step 205 ′ The MME detects that the Partial Fai lure is present, and sends a notification message to the SGSN associated with the ISR, where the notification message indicates that the mobility management entity associated with the ISR is partially failed.
  • the MME may learn the identification information of the user equipment that has lost the PDN connection context according to the backup system, and query the backup system to obtain the SGSN associated with itself, and then The SGSN associated with the ISR sends a notification message containing the identification information of the user equipment.
  • the name of the notification message sent by the MME to the SGSN may be an MME Partial Failure Notification (MME Partial Failure Notification) message, and the present invention does not limit the specific name of the notification message.
  • MME Partial Failure Notification MME Partial Failure Notification
  • the notification message carries the identifier information of the user equipment that loses the PDN connection context when the MME part fails.
  • the identifier information of the user equipment may be an IMSI (International Mobile Subscriber Identification Number) and/or a TEID. (Tunnel Endpoint Identifier) and/or IP address.
  • the MME may send the notification message to the SGSN associated with the ISR based on the user granularity, that is, the notification message carries only one identifier of the user equipment that loses the PDN connection when the MME part fails. information.
  • the notification message carries the IMSI information of the user equipment that loses the PDN connection when the MME part fails, or the TEID field of the GTP-C message header of the notification message is filled once when one SGSN is lost when the MME part fails.
  • the TEID assigned by the PDN-connected user equipment enables the SGSN that receives the notification message to learn from the IMSI and/or the TEID that the user equipment that lost the PDN connection context when the MME part fails. In this case, if there are more user equipments that lose the PDN connection when the part E fails, the MME may need to send multiple notification messages to the SGSN associated with the IRS, respectively, to inform the SGSN that each MME part fails to lose the PDN connected user equipment. Identification information.
  • the MME may send the notification message to the ISR-associated SGSN based on the network element device granularity, that is, the The notification message may carry the identifier information of the PDN-connected user equipment when the MME part fails, and the identifier information of the user equipment may be the IMSI of the user equipment, so that the SGSN that receives the notification message may be based on the multiple IMSIs.
  • the user equipment that lost the PDN connection context when the MME part fails is known.
  • the SGW can inform the SGSN of the MME to lose the identification information of the user equipment of the PDN connection when the MME part fails, and the system signaling can be reduced to some extent.
  • the notification message may further carry an MME Partial Failure indication, and notify the ISR that the SGSN MME part of the association fails.
  • the MME Partial Fai lure indicates that the specific implementation may be carrying an MME partial failure indication (Indicator) cell or carrying A Cause (Cause) cell for partial failure of the MME.
  • Step 206 The SGSN receives the notification message. As can be seen from the above description, the SGSN receives the notification message sent by the SGW or the MME.
  • the SGSN may learn that the MME associated with the ISR in the user equipment is partially failed according to the received notification message, and then perform the operation of deactivating the ISR on the user equipment.
  • the specific operations include the following steps: Step 207: SGSN Determining that the user equipment is in a connected state;
  • the SGSN can learn whether the user equipment is in a connected state by using a state machine of a NAS (Non Access Stratum, non-access stratum).
  • NAS Non Access Stratum, non-access stratum
  • the SGSN after determining that the user equipment is in the connected state, the SGSN performs a P-TMSI Real Location procedure on the user equipment, so that the user equipment initiates a RAU (Routing Area Update).
  • the process deactivates the ISR;
  • the SGSN performs a packet temporary mobile user identity reallocation process on the user equipment, including:
  • Step 208-1 SGS reassigns the temporary mobile subscriber identity and routing area to the user equipment, and then generates a packet temporary mobile subscriber identity reassignment command (P-TMSI Real location Command) to the user equipment;
  • P-TMSI Real location Command P-TMSI Real location Command
  • the SGSN carried in the P-TMSI Real Location Command is allocated to the routing area identifier of the user equipment, and the routing area identifier allocated by the SGSN is different from the tracking area identifier broadcasted by the network element of the radio access network, so that the user equipment initiates the RAU process.
  • Step 208-2 The user equipment receives the P-TMSI Real location Command, and sends a P-TMSI Real Location Complete message to the SGSN, informing the SGSN to complete the redistribution of the packet temporary mobile subscriber identity;
  • the user equipment performs the RAU process
  • deactivating the ISR through the RAU process includes the following steps:
  • 209- 1 The user equipment sends a RAU Request (Routing Area Update Request) message to the SGSN; 209-2: After receiving the RAU Request message, the SGSN sends a modify bearer request message to the SGW, instructing the SGW to deactivate the ISR;
  • the SGW After receiving the modify bearer request message sent by the SGSN, the SGW deletes the locally saved MME address information to deactivate the ISR, and sends a modify bearer response message to the SGSN:
  • the SGSN After receiving the modify bearer response message, the SGSN deletes the address information of the locally saved MME to deactivate the ISR.
  • the SGSN sends a routing area update accept request message to the user equipment, instructing the user equipment to deactivate the ISR.
  • 209-6 The user equipment sets the local TIN to a predetermined value according to the indication of the routing area update accept request message, indicating that the local ISR is deactivated, that is, deactivates the ISR.
  • the embodiment of the present invention further provides a method for processing a partial failure (partial failure) of the MME when the ISR is activated.
  • the method is applicable to the EPS system shown in FIG. 2, and specifically includes steps 301 to 312. :
  • the SGSN may receive the notification message by using the operations of the steps 301 to 306, and obtain a partial failure of the mobility management entity where the user equipment is located according to the received notification message, and then perform an operation of deactivating the ISR on the user equipment, where step 301
  • step 306 please refer to the description of the step 201 to the step 206, respectively, wherein the step 305 can be replaced by the step 305 ', and the detailed description of the step 305 ' can be referred to the step 205 ', which will not be repeated here.
  • the operation of the user equipment to perform the deactivation of the ISR may specifically include the following steps:
  • Step 307 The user equipment sends a RAU Request message to the SGSN.
  • Step 308 The SGSN receives the RAU Request (Routing Area Update Request) message sent by the user equipment, and sends a modify bearer request message to the SGW, instructing the SGW to deactivate the ISR.
  • RAU Request Ring Area Update Request
  • the SGW After receiving the modify bearer request message sent by the SGSN, the SGW deletes the locally stored address information of the MN to deactivate the ISR, and sends a modify bearer response message to the SGSN.
  • the SGSN After receiving the modify bearer response message, the SGSN deletes the locally saved address information of the map E to activate the ISR.
  • the SGSN sends a routing area update accept request message to the user equipment, instructing the user equipment to deactivate the ISR.
  • the user equipment sets the local TIN to a predetermined value according to the indication of the routing area update accept request message, indicating that the ISR is not activated, that is, deactivates the ISR.
  • an embodiment of the present invention further provides a method for processing a partial failure (partial failure) of the MME when the ISR is activated.
  • the method is applicable to the EPS system shown in FIG. 2, and specifically includes steps 401 to 412. :
  • the SGSN may receive the notification message according to the operations of the steps 401 to 406, and learn that the mobility management entity where the user equipment is located partially fails according to the received notification message, and then perform the operation of deactivating the ISR on the user equipment, where step 401
  • the operation of the step 406 please refer to the description of the step 201 to the step 206, respectively, wherein the step 405 can be replaced by the step 405 'equivalently, and the detailed description of the step 405 ′ is referred to the step 205 ′, and the description is omitted here.
  • the operation of the user equipment to perform the deactivation of the ISR may specifically include the following steps:
  • Step 407 The user equipment initiates a service request process.
  • the service request process includes: the user equipment initiates a service request message to the SGSN, and after receiving the service request message, the SGSN sends a modify bearer request to the SGW, and the user equipment can enter the connection state from the idle state by using the service request process.
  • the service request process includes: the user equipment initiates a service request message to the SGSN, and after receiving the service request message, the SGSN sends a modify bearer request to the SGW, and the user equipment can enter the connection state from the idle state by using the service request process.
  • the SGSN after the user equipment initiates the service request procedure, the SGSN performs a P-TMSI Real Location process on the user equipment, so that the user equipment initiates the RAU (Routing Area).
  • the SGSN performs a packet temporary mobile user identity reallocation process on the user equipment, including:
  • Step 408-1 SGS reassigns the temporary mobile subscriber identity and routing area to the user equipment, and then sends a packet temporary mobile subscriber identity reassignment command (P-TMSI Real location Command) to the user equipment;
  • P-TMSI Real location Command a packet temporary mobile subscriber identity reassignment command
  • the SGSN carried in the P-TMSI Real Location Command is allocated to the routing area identifier of the user equipment, and the routing area identifier allocated by the SGSN is different from the tracking area identifier broadcast by the network element of the radio access network, so that the user equipment initiates
  • Step 408-2 The user equipment receives the P-TMSI Real location Command, and sends a P-TMSI Real Location Complete message to the SGSN, informing the SGSN to complete the redistribution of the packet temporary mobile subscriber identity;
  • the user equipment performs the RAU process, and deactivating the ISR through the RAU process includes the following steps:
  • the user equipment sends a RAU Request (Routing Area Update Request) message to the SGSN.
  • RAU Request Ring Area Update Request
  • the SGSN After receiving the RAU Request message, the SGSN sends a modify bearer request message to the SGW, indicating the SGW. Deactivate the ISR;
  • the SGW After receiving the modify bearer request message sent by the SGSN, the SGW deletes the address information of the locally saved MME to deactivate the ISR, and sends a corresponding modify bearer response message to the SGSN.
  • the SGSN After receiving the modify bearer response message, the SGSN deletes the address information of the locally saved MME to deactivate the ISR.
  • the SGS sends a routing area update accept request message to the user equipment, instructing the user equipment to deactivate the ISR.
  • 409-6 The user equipment sets the local TIN to a predetermined value according to the indication of the routing area update accept request message, indicating that the ISR is not activated, that is, deactivates the ISR.
  • an embodiment of the present invention further provides a method for processing a partial failure (partial failure) of the MME when the ISR is activated.
  • the method is applicable to the EPS system shown in FIG. 2, and specifically includes steps 501 to 512. :
  • the SGSN may receive the notification message according to the operations of the steps 501 to 506, and obtain a partial failure of the mobility management entity where the user equipment is located according to the received notification message, and then perform an operation of deactivating the ISR on the user equipment, where step 501
  • step 506 please refer to the description of step 201 to step 206, respectively, wherein step 505 can be replaced by step 505 'equivalently, and the detailed description of step 505 ′ is referred to step 205 ′, and will not be described here again.
  • the operation of the user equipment to perform the deactivation of the ISR may specifically include the following steps:
  • Step 507 The PGW sends a downlink data packet to the SGW.
  • Step 508 The SGW receives the downlink data packet of the user equipment sent by the PGW, and sends the downlink data notification message to the MME and the SGSN respectively.
  • the SGW after receiving the downlink data packet sent by the PGW for the user equipment, the SGW determines whether the user equipment is in an idle state, and sends the information to the MME and the SGSN when the user equipment is in an idle state.
  • the downlink data notification message, or the SGW may directly forward the downlink data notification message sent by the PGW to the MME and the SGSN after receiving the delete PDN connection set request message sent by the ⁇ E.
  • the SGW can learn whether the user equipment is idle through the state machine of the NAS (Won Access Stratum, non-access stratum).
  • the operation of the SGSN to receive the notification message may be performed before the SGSN receives the SGW to send the downlink data notification message, or the operation of the SGSN to receive the notification message may be an operation that the SGSN receives the SGW to send the downlink data notification message. Simultaneously achieved.
  • Step 509 The SGSN advertises the user equipment by the network element of the radio access network, and triggers the user equipment to execute the service request procedure.
  • the service request process includes the user equipment initiating a service request message to the SGSN, and the SGSN sends a modify bearer request to the SGW after receiving the service request message, and the user equipment can enter the connection state from the idle state through the service request process.
  • the service request process includes the user equipment initiating a service request message to the SGSN, and the SGSN sends a modify bearer request to the SGW after receiving the service request message, and the user equipment can enter the connection state from the idle state through the service request process.
  • the SGSN after the user equipment initiates the service request procedure, the SGSN performs a P-TMSI Real Location procedure on the user equipment, so that the user equipment initiates a RAU (Routing Area Update).
  • the process deactivates the ISR;
  • the SGSN performs a packet temporary mobile user identity reallocation process on the user equipment, including:
  • Step 511-1 SGS reassigns the temporary mobile subscriber identity and the routing area to the user equipment, and then sends a packet temporary mobile subscriber identity reassignment command (P-TMSI Real location Command) to the user equipment;
  • P-TMSI Real location Command a packet temporary mobile subscriber identity reassignment command
  • the SGSN carried in the P-TMSI Real Location Command is allocated to the routing area identifier of the user equipment, and the routing area identifier allocated by the SGSN is different from the tracking area identifier broadcasted by the network element of the radio access network, so that the user equipment initiates the RAU process.
  • Step 511-2 The user equipment receives the P-TMSI Real location Command, and sends a P-TMSI Real Location Complete message to the SGSN, and notifies the SGSN to complete the redistribution of the packet temporary mobile subscriber identity.
  • the user equipment performs the RAU process, and deactivating the ISR through the RAU process includes the following steps:
  • the user equipment sends a RAU Request (Routing Area Update Request) message to the SGSN;
  • the SGSN After receiving the RAU Request message, the SGSN sends a modify bearer request message to the SGW, instructing the SGW to deactivate the ISR;
  • the SGW After the SGW receives the modify bearer request message sent by the SGSN, the SGW deletes the locally saved address information of the MN to deactivate the ISR, and sends a corresponding modify bearer response message to the SGSN:
  • the SGSN After receiving the modify bearer response message, the SGSN deletes the address information of the locally saved MME to deactivate the ISR;
  • the SGSN sends a routing area update accept request message to the user equipment, instructing the user equipment to deactivate the ISR.
  • the user equipment sets the local TIN to a predetermined value according to the indication of the routing area update accept request message, indicating that the ISR is not activated, that is, deactivates the ISR.
  • Partial failure by knowing the mobility management entity where the user equipment is located, and performing de-excitation on the user equipment
  • the active idle mode restricts the implementation of the signaling technical solution, and overcomes the problem that the current service of the user equipment is interrupted or the called unreachable problem occurs, thereby improving the user's service experience.
  • the embodiment of the present invention further provides a method for processing a Partial Fai lure (partial failure) in the MME when the ISR is activated.
  • the method is applicable to the EPS system described in FIG. 612:
  • the SGSN may receive the notification message according to the operations of the steps 601 to 606, and learn to perform a partial failure of the mobility management entity where the user equipment is located according to the received notification message, and then perform the operation of deactivating the ISR on the user equipment, where step 601
  • step 606 please refer to the description of step 201 to step 206, respectively, wherein step 605 can be replaced by step 605 'equivalently, and the detailed description of step 605 ' can be referred to step 205 ', and will not be described here again.
  • the operation of the user equipment to perform the deactivation of the ISR may specifically include the following steps:
  • Step 607 The SGSN determines that the user equipment is in an idle state, and triggers the user equipment to perform a service request procedure.
  • the SGSN may use a NAS (non-access stratum) state machine to learn whether the user equipment is Is in an idle state.
  • NAS non-access stratum
  • Step 608 The SGW pages the user equipment, and sends the downlink data notification message to the MME and the SGSN respectively.
  • the SGW determines the Whether the user equipment is in an idle state, and the downlink data notification message is sent to the MME and the SGSN when the user equipment is in an idle state, or the SGW may directly send the MME and the SGSN to the MME and the SGSN after receiving the Delete PDN Connection Set Request message sent by the MME. Forward the downlink data notification message sent by the PGW.
  • the SGW can learn whether the user equipment is idle through the state machine of the NAS (Non Access Stratum, non-access stratum).
  • the operation of the SGSN to receive the notification message may be performed before the SGSN receives the SGW to send the downlink data notification message, or the operation of the SGSN to receive the notification message may be an operation that the SGSN receives the SGW to send the downlink data notification message. Simultaneously achieved.
  • Step 609 The SGSN advertises the user equipment by using the radio access network element to trigger the user equipment to perform the service request process.
  • Step 610 The user equipment initiates a service request process.
  • the service request process includes the user equipment initiating a service request message to the SGSN, and the SGSN sends a modify bearer request to the SGW after receiving the service request message, and the user equipment can enter the connection state from the idle state through the service request process.
  • the service request process includes the user equipment initiating a service request message to the SGSN, and the SGSN sends a modify bearer request to the SGW after receiving the service request message, and the user equipment can enter the connection state from the idle state through the service request process.
  • the SGSN after the user equipment initiates the service request procedure, the SGSN performs a P-TMSI Real Location procedure on the user equipment, so that the user equipment initiates a RAU (Routing Area Update) process. Deactivate the ISR; Specifically, the SGSN performs a packet temporary mobile subscriber identity reallocation process on the user equipment, including: Step 611-1: SGS re-allocates the temporary mobile subscriber identity and the routing area for the user equipment, and then, performs a packet temporary mobile subscriber identity redistribution to the user equipment.
  • Command P-TMSI Real locat ion Command
  • the SGSN carried in the P-TMSI Real Locating Command is assigned to the routing area identifier of the user equipment, and the routing area identifier allocated by the SGSN is different from the tracking area identifier broadcasted by the network element of the radio access network, so that the user equipment initiates the RAU. Process to deactivate the ISR;
  • Step 611-2 The user equipment receives the P-TMS I Real locat ion Command, and sends a packet temporary mobile subscriber identity re-allocation complete (P-TMSI Real locat ion Complete) message to the SGSN to notify the SGSN to complete the redistribution of the packet temporary mobile subscriber identity. ;
  • the user equipment performs the RAU process, and deactivating the ISR through the RAU process includes the following steps:
  • the user equipment sends a RAU Request (Routing Area Update Request) message to the SGSN;
  • the SGSN After receiving the RAU Request message, the SGSN sends a modify bearer request message to the SGW, instructing the SGW to deactivate the ISR;
  • the SGW After the SGW receives the modify bearer request message sent by the SGSN, the SGW deletes the locally saved address information of the ⁇ E to deactivate the ISR, and sends a corresponding modify bearer response message to the SGSN.
  • the SGSN After receiving the modify bearer response message, the SGSN deletes the address information of the locally saved MME to deactivate the ISR;
  • the SGSN sends a routing area update accept request message to the user equipment, instructing the user equipment to deactivate the ISR.
  • 612-6 The user equipment sets the local TIN to a predetermined value according to the indication of the routing area update accept request message, indicating that the ISR is not activated, that is, deactivates the ISR.
  • Example 3 By implementing the technical solution that the mobility management entity where the user equipment is located partially fails, and performing the operation of deactivating the idle mode restriction signaling to the user equipment, the user equipment is forced to be interrupted or the called party is unavailable. Achieve problems, thereby improving the user's business experience.
  • Example 3
  • a packet radio service support node where the node specifically includes:
  • the receiving module 701 is configured to receive a notification message, where the notification message indicates that the mobility management entity associated with the idle mode restriction signaling that is located by the user equipment fails partially;
  • the deactivation module 702 is configured to perform an operation of deactivating idle mode restriction signaling on the user equipment.
  • the receiving module 701 includes: The first receiving unit 7011 is configured to receive a notification message sent by the serving gateway; or
  • the second receiving unit 7012 is configured to receive a notification message sent by the mobility management entity.
  • the notification message specifically carries the identifier information of the user equipment and/or the mobility management entity part failure indication.
  • the deactivation module 702 includes:
  • the first deactivation unit 7021 is configured to determine that the user equipment is in a connected state, and perform a packet temporary mobile user identity reallocation process on the user equipment, so that the user equipment initiates a routing area update procedure to activate idle mode restriction signaling; or
  • the second deactivation unit 7022 is configured to receive a service request message sent by the user equipment, and perform a packet temporary mobile user identity re-distribution process on the user equipment, so that the user equipment initiates a routing area update process to activate the idle mode restriction signal; or
  • the third deactivation unit 7023 is configured to receive a routing area update request sent by the user equipment, and send a routing area update accepting request to the user equipment, to instruct the user equipment to deactivate the idle mode restriction signaling; or
  • the fourth deactivation unit 7024 is configured to receive a downlink data notification message of the user equipment sent by the packet data gateway, page the user equipment, trigger the user equipment to perform a service request procedure, and perform a packet temporary mobile subscriber identity reallocation process on the user equipment, In order for the user equipment to initiate a routing area update procedure to activate idle mode restriction signaling; or
  • the fifth deactivation unit 7025 is configured to determine that the user equipment is in an idle state, and the paging user equipment is configured to trigger the user equipment to perform a service request procedure, receive a service request message sent by the user equipment, and perform a packet temporary mobile user identity redistribution process on the user equipment. So that the user equipment initiates a routing area update procedure to activate idle mode restriction signaling.
  • the first deactivation unit 7021, the second deactivation unit 7022, the fourth deactivation unit 7024, or the fifth deactivation unit 7025 are specifically configured to perform a packet temporary mobile subscriber identity reassignment command, so that the user equipment initiates a routing area update.
  • the process after receiving the routing area update request sent by the user equipment, sends a routing area update accepting request to the user equipment, instructing the user equipment to deactivate the idle mode restriction signaling.
  • the node further includes: a sending module 703, configured to send a modify bearer request message to the serving gateway, so that the serving gateway deletes the locally saved mobility management entity after receiving the modify bearer request message. Address information.
  • the deleting module 704 is configured to receive a modify bearer response message sent by the serving gateway, and delete the address information of the locally saved mobility management entity.
  • an embodiment of the present invention provides a system for partially failing a mobility management entity, where the system specifically includes: a packet radio service support node 801 associated with idle mode restriction signaling, and mobility associated with idle mode restriction signaling. Management entity 802 and service gateway 803;
  • the mobility management entity 802 or the service gateway 803 is configured to send a notification message to the packet radio service support node 801, where the notification message is used to indicate that the mobility management entity where the user equipment is located partially fails.
  • the idle mode restriction signaling associated packet radio service support node 801 is configured to receive a notification message and perform an operation of deactivating idle mode restriction signaling for the user equipment.
  • the mobility management entity 802 associated with the idle mode restriction signaling is also used for the serving gateway.
  • the serving gateway 803 is further configured to receive the delete PDN connection set request, and retain the PDN connection context corresponding to the context global identifier stored locally.
  • the packet radio service support node 801 is configured to perform the operation of deactivating the idle mode restriction signaling to the user equipment, including:
  • the paging user equipment is configured to trigger the user equipment to perform a service request procedure, receive a service request message sent by the user equipment, and perform a group temporary mobile user identity redistribution process on the user equipment. , in order for the user equipment to initiate a routing area update procedure to activate idle mode restriction signaling: or,
  • the update process deactivates idle mode limit signaling.
  • the user equipment initiates a routing area update process, receives a routing area update request sent by the user equipment, and sends a routing area update accepting request to the user equipment, instructing the user equipment to deactivate the idle mode restriction signaling.
  • the packet radio service support node 801 is further configured to send a modify bearer request message to the serving gateway before sending the routing area update accepting request to the user equipment;
  • the service gateway 803 is further configured to: after receiving the modify bearer request message, delete the locally stored address information of the mobility management entity, and return a modify bearer response message to the packet radio service support node 801.
  • the packet radio service support node 801 is further configured to receive the modify bearer response message, and delete the locally saved address information of the mobility management entity.
  • the user equipment 804 is configured to receive a routing area update accept request sent by the packet radio service support node 801, set a temporary identifier TIN locally used for the next update to a predetermined value, and indicate a local idle mode restriction letter. Let go to activate.

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

Abstract

La présente invention appartient au domaine technique des communications mobiles. La présente invention se rapporte à un procédé, à un nœud et à un système adaptés pour gérer un dysfonctionnement partiel d'une entité de gestion de la mobilité. Le procédé selon l'invention comprend les étapes suivantes : un nœud de support GPRS de service associé à une fonction de réduction de la signalisation d'un état de repos reçoit un message de notification (101), ledit message de notification étant utilisé afin de signaler que l'entité de gestion de la mobilité, au niveau de laquelle se trouve un équipement d'utilisateur, et à laquelle est associée la fonction de réduction de la signalisation d'un état de repos, est touchée par un dysfonctionnement partiel ; et le nœud de support GPRS de service exécute une opération de désactivation de la fonction de réduction de la signalisation d'un état de repos pour l'équipement d'utilisateur (102). La solution technique décrite dans la présente invention résout le problème lié au fait que l'équipement d'utilisateur se trouve confronté à un service en cours d'exécution qui est interrompu de force, ou à une partie appelée qui devient impossible à atteindre quand l'entité de gestion de la mobilité est touchée par le dysfonctionnement partiel. Par voie de conséquence, l'invention est apte à améliorer significativement l'expérience de l'utilisateur en termes de service d'abonné.
PCT/CN2012/070197 2012-01-10 2012-01-10 Procédé, nœud et système pour gérer un dysfonctionnement partiel d'une entité de gestion de la mobilité WO2013104114A1 (fr)

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PCT/CN2012/070197 WO2013104114A1 (fr) 2012-01-10 2012-01-10 Procédé, nœud et système pour gérer un dysfonctionnement partiel d'une entité de gestion de la mobilité
CN2012800002260A CN103299692A (zh) 2012-01-10 2012-01-10 处理移动性管理实体部分失败的方法、节点及系统

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