WO2017028637A1 - 网关的恢复处理方法及装置 - Google Patents

网关的恢复处理方法及装置 Download PDF

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Publication number
WO2017028637A1
WO2017028637A1 PCT/CN2016/088206 CN2016088206W WO2017028637A1 WO 2017028637 A1 WO2017028637 A1 WO 2017028637A1 CN 2016088206 W CN2016088206 W CN 2016088206W WO 2017028637 A1 WO2017028637 A1 WO 2017028637A1
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Prior art keywords
mobility management
management unit
identification information
request message
update request
Prior art date
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PCT/CN2016/088206
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English (en)
French (fr)
Inventor
卢飞
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中兴通讯股份有限公司
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Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US15/752,056 priority Critical patent/US10893404B2/en
Priority to ES16836501T priority patent/ES2959415T3/es
Priority to EP16836501.3A priority patent/EP3337202B1/en
Publication of WO2017028637A1 publication Critical patent/WO2017028637A1/zh
Priority to US17/104,325 priority patent/US11564078B2/en

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    • 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
    • H04W8/08—Mobility data transfer
    • H04W8/12—Mobility data transfer between location registers or mobility servers
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/12—Reselecting a serving backbone network switching or routing node
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements

Definitions

  • This document relates to the field of communications, and in particular, to a gateway recovery method and apparatus.
  • the 3rd Generation Partnership Project (3GPP) standardization working group is currently working on the Packet Switch Core (PS Core) and the Global Mobile Telecommunications System Radio Access Network ( The evolution of the Universal Mobile Telecommunication System Radio Access Network (UTRAN), the subject of this research is called System Architecture Evolution (SAE), which aims to make Evolved Packet Core (EPC) available. Higher transmission rate, resulting in shorter transmission delays, while optimizing packets, and supporting Evolved UTRAN (E-UTRAN), UTRAN, Wireless Local Area Network (WLAN) and others Mobility management between non-3GPP access networks.
  • SAE System Architecture Evolution
  • the current SAE architecture is shown in Figure 1. It includes the following network elements: Evolved RAN (E-RAN), Packet Data Network (PDN), and evolved packets. E-Packet Core.
  • E-RAN Evolved RAN
  • PDN Packet Data Network
  • E-Packet Core The evolved packet network includes the following network elements: Mobility Management Entity (MME).
  • MME Mobility Management Entity
  • the mobility management unit is an SGSN (Serving GPRS Support Node); the Serving Gateway (Serving Gateway, Short for SGW); PDN Gateway (PGW); Policy and Charging Rules Function (PCRF); Home Subscriber Server (HSS).
  • MME Mobility Management Entity
  • the mobility management unit is an SGSN (Serving GPRS Support Node); the Serving Gateway (Serving Gateway, Short for SGW); PDN Gateway (PGW); Policy and Charging Rules Function (PCRF); Home Subscriber Server (HSS).
  • SGSN Serving GPRS Support Node
  • PGW Packet Data Network Gateway
  • the user equipment may be in the power saving mode, and the power saving mode includes a power saving state (PSM) or an extended discontinuous reception (abbreviated as eDRX) status, in power saving mode
  • PSM power saving state
  • eDRX extended discontinuous reception
  • the MME will not be able to page to the UE, and the UE is also in the unreachable state. If the MME receives the bearer management signaling and knows that the UE is unreachable, the MME notifies the PGW of the information that the UE is temporarily unreachable.
  • 2 is a step of the MME receiving bearer management signaling in the related art:
  • Step 201 The PGW sends a bearer setup request message to the SGW, where the message carries the quality of service (QoS), the traffic flow template (TFT), the charging ID, and the PGW uplink tunnel endpoint identifier (Tunnel). Endpoint Identifier, TEID);
  • QoS quality of service
  • TFT traffic flow template
  • Tunnel PGW uplink tunnel endpoint identifier
  • Step 202 After receiving the bearer setup request message, the SGW forwards the bearer setup request message to the MME, where the message carries the bearer QoS, TFT, and SGW uplink TEID.
  • Step 203 After receiving the bearer setup request message, the MME checks the UE status. If the UE is in the idle state and the UE activates the power saving mode, the MME starts paging to the eNodeB, and sets a paging timer; when paging timing After the device times out, if the MME has not received the paging response, the MME considers that the paging is unsuccessful;
  • Step 204 After receiving the paging message, the eNodeB starts paging the UE.
  • Step 205 If the paging response is not received before the timer expires, the MME considers that the paging is unsuccessful; the MME returns a bearer response message to the SGW, where the message carries a special cause value, indicating the SGW, because the UE The power saving mode is temporarily unreachable, and the MME sets an identifier, indicating that the PDN connection signaling initiated by the network is currently in a suspended state;
  • Step 206 The SGW returns a bearer response to the PGW, and the response message carries a special cause value, indicating that the PGW UE is temporarily unreachable due to the power saving mode; the PGW receives the special cause value, and the PGW only receives the bearer update request after receiving the bearer update request. The same bearer establishment process will be attempted again.
  • the UE can still move.
  • the mobility management unit may also select the original SGW to serve the UE, and send the message to the SGW. Step 305 message, but if the UE moves only within the system (as within the E-UTRAN system), the serving gateway may not send a Bearer Update Request message to the PGW. If the PGW does not receive the bearer update request, the PGW can never initiate the signaling of the PDN connection, which causes some downlink services to be undeliverable to the UE for a long time.
  • the embodiment of the invention provides a gateway recovery processing method and device, which can realize that when the UE moves to a new mobility management unit, the PGW is notified.
  • a gateway processing method including: in a case where a terminal moves from a first mobility management unit to a second mobility management unit, the second mobility management unit Receiving, from the first mobility management unit, the identification information, wherein the identification information is used to indicate that the packet data network PDN connection signaling is in a suspended state; and the second mobility management unit sends the identification information to the service
  • the gateway SGW, and the identifier information is used to trigger the SGW to send a bearer update request message to the packet data network element PGW.
  • the identifier information is carried in the bearer update request message.
  • the identification information is represented by an information unit IE.
  • the second mobility management unit receives the identifier information from the first mobility management unit, the second mobility management unit receives a globally unique temporary terminal identifier GUTI from the terminal; The mobility management unit searches for the first mobility management unit according to the GUTI.
  • the method further includes: the second mobility management unit receives an indication message from the terminal, where The indication message is used to indicate whether the terminal supports the idle state signaling optimization ISR capability.
  • the bearer update request message further carries a source general packet radio service tunneling protocol control plane GTP-C identifier corresponding to the first mobility management unit and a corresponding to the second mobility management unit. Purpose GTP-C identification.
  • the second mobility management unit receives the bearer update request from the SGW.
  • the response message wherein the response message carries at least one of the following: address information of the SGW, the PGW address information, a GTP-C identifier corresponding to the SGW, and a corresponding to the PGW. GTP-C logo.
  • the second mobility management unit sends the identifier information to the serving gateway SGW, the second mobility management unit sends a notification message to the home subscriber server HSS, where the notification message is used for Notifying the HHS that the terminal has been moved by the first mobility management unit to the second mobility management unit.
  • the first mobility management unit comprises: a mobility management entity MME or a serving general packet radio service support node SGSN; the second mobility management unit comprises: a mobility management entity MME or a serving general packet radio service Support node SGSN.
  • there is still another method for recovering a gateway including: in a case where a terminal moves from a first mobility management unit to a second mobility management unit, the first mobile The identity management unit sends the identifier information to the second mobility management unit, where the identifier information is used to indicate that the packet data network PDN connection signaling is in a suspended state, and is used to trigger the serving gateway SGW to the packet data network network element PGW. Sending the bearer update request message.
  • the first mobility management unit comprises: a mobility management entity MME or a serving general packet radio service support node SGSN; the second mobility management unit comprises: a mobility management entity MME or a serving general packet radio service Support node SGSN.
  • another method for recovering a gateway including: in a case where the terminal moves from the first mobility management unit to the second mobility management unit, the serving gateway SGW The second mobility management unit receives the identifier information, where the identifier information is used to indicate that the packet data network PDN connection signaling is in a suspended state; and the serving gateway SGW, under the trigger of the identifier information, carries the update request. The message is sent to the packet data network element PGW.
  • the identifier information is carried in the bearer update request message.
  • the bearer update request message further carries a source general packet radio service tunneling protocol control plane GTP-C identifier corresponding to the first mobility management unit and a corresponding to the second mobility management unit. Purpose GTP-C identification.
  • the SGW sends the response message to the bearer update request message to the SGW.
  • the second mobility management unit wherein the response message carries at least one of the following: address information of the SGW, the PGW address information, a GTP-C identifier corresponding to the SGW, and a location
  • the GTP-C identifier corresponding to the PGW is described.
  • the first mobility management unit comprises: a mobility management entity MME or a serving general packet radio service support node SGSN; the second mobility management unit comprises: a mobility management entity MME or a serving general packet radio service Support node SGSN.
  • a gateway recovery processing apparatus which is applied to a second mobility management unit, including: a first receiving module, configured to move from a first mobility management unit to a second terminal
  • the identifier information is received from the first mobility management unit, wherein the identifier information is used to indicate that the packet data network PDN connection signaling is in a suspended state
  • the first sending module is configured to The identifier information is sent to the serving gateway SGW, and the identifier information is used to trigger the SGW to send a bearer update request message to the packet data network element PGW.
  • the identifier information is carried in the bearer update request message.
  • the identification information is represented by an information unit IE.
  • the first mobility management unit comprises: a mobility management entity MME or a serving general packet radio service support node SGSN; the second mobility management unit comprises: a mobility management entity MME or a serving general packet radio service Support node SGSN.
  • another gateway recovery processing apparatus applicable to the first mobility management unit, including: a sending module, configured to move from the first mobility management unit to the terminal
  • the identifier information is sent to the second mobility management unit, where the identifier information is used to indicate that the packet data network PDN connection signaling is in a suspended state, and is used to trigger the serving gateway SGW to The packet data network element PGW sends the bearer update request message.
  • the first mobility management unit includes: a mobility management entity MME or a serving general packet radio service support node SGSN; and the second mobility management unit includes: The Attribute Management Entity MME or the Serving General Packet Radio Service Support Node SGSN.
  • another gateway recovery processing apparatus applicable to a serving gateway SGW, comprising: a receiving module, configured to move from a first mobility management unit to a second mobility at a terminal
  • the identification information is received from the second mobility management unit, wherein the identification information is used to indicate that the packet data network PDN connection signaling is in a suspended state
  • the first sending module is configured to be in the The bearer update request message is sent to the packet data network element PGW under the trigger of the identification information.
  • the identifier information is carried in the bearer update request message.
  • the first mobility management unit comprises: a mobility management entity MME or a serving general packet radio service support node SGSN; the second mobility management unit comprises: a mobility management entity MME or a serving general packet radio service Support node SGSN.
  • the second mobility management unit when the terminal moves from the first mobility management unit to the second mobility management unit, the second mobility management unit receives the identification information from the first mobility management unit, where the identifier information And indicating that the packet data network PDN connection signaling is in a suspended state; the second mobility management unit sends the identifier information to the serving gateway SGW, and the identifier information is used to trigger the SGW to send the bearer update request message to the packet data network element. PGW.
  • FIG. 1 is a schematic diagram of a structure of an evolved packet network system according to the related art
  • FIG. 3 is a signaling flow chart of a tracking area update flow according to the related art
  • FIG. 4 is a flowchart of a method for restoring a gateway according to an embodiment of the present invention.
  • FIG. 5 is a structural block diagram of a gateway recovery processing apparatus according to an embodiment of the present invention.
  • FIG. 6 is a structural block diagram (1) of a gateway recovery processing apparatus according to an embodiment of the present invention.
  • FIG. 7 is a structural block diagram (2) of a gateway recovery processing apparatus according to an embodiment of the present invention.
  • FIG. 8 is a structural block diagram (3) of a gateway recovery processing apparatus according to an embodiment of the present invention.
  • FIG. 9 is a structural block diagram of another gateway recovery processing apparatus according to an embodiment of the present invention.
  • FIG. 10 is a flowchart (1) of a method for restoring a gateway according to an embodiment of the present invention.
  • FIG. 11 is a structural block diagram (4) of a gateway recovery processing apparatus according to an embodiment of the present invention.
  • FIG. 12 is a structural block diagram (5) of a gateway recovery processing apparatus according to an embodiment of the present invention.
  • FIG. 13 is a flowchart of notifying a gateway to resume in a power saving mode according to an embodiment of the present invention
  • FIG. 14 is a flowchart of a UE moving to a new MME according to an embodiment of the present invention.
  • 15 is a flow chart of a UE moving to a new MME, the new MME selecting a new SGW, according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a gateway recovery processing method according to an embodiment of the present invention. As shown in FIG. 4, the process includes the following steps:
  • Step S402 in a case where the terminal moves from the first mobility management unit to the second mobility management unit, the second mobility management unit receives the identification information from the first mobility management unit, where the identification information is used to indicate the grouping.
  • the data network PDN connection signaling is in a suspended state;
  • Step S404 The second mobility management unit sends the identifier information to the serving gateway SGW, and the identifier information is used to trigger the SGW to send the bearer update request message to the packet data network element PGW.
  • the second mobility management unit receives, from the first mobility management unit, the packet data network PDN connection signaling is in a suspended state, and triggers the SGW to send the bearer update request message to the packet data network element.
  • the identification information of the PGW is sent to the SGW, so that the PGW receives the bearer update request message.
  • the PGW cannot always initiate the signaling of the PDN connection, which results in Some
  • the downlink service cannot be delivered to the UE for a long time.
  • the above steps can be implemented when the UE moves to the new mobility management unit, and the PGW is notified, thereby ensuring the terminal receiving the downlink service.
  • the foregoing may be configured to send the identifier information in a plurality of manners.
  • the identifier information is carried in the bearer update request message, and the identifier information is sent by sending a bearer update request message.
  • the identification information is represented by an information element IE.
  • the above step S402 relates to the second mobility management unit receiving the identification information from the first mobility management unit.
  • the second mobility management unit receives the global unique temporary terminal identifier GUTI from the terminal.
  • the second mobility management unit searches for the first mobility management unit according to the GUTI.
  • the second mobility management unit may receive the bearer update request message and the identifier information from the first mobility management unit.
  • the first mobility management unit comprises: a mobility management entity MME or a serving general packet radio service support node SGSN; the second mobility management unit comprises: a mobility management entity MME or a serving general packet radio service Support node SGSN.
  • a gateway recovery processing device is also provided, which is used to implement the foregoing embodiments and optional implementation manners, and has not been described again.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • the apparatus includes: a first receiving module 52, configured to be at the terminal from the first When the mobility management unit moves to the second mobility management unit, the identifier information is received from the first mobility management unit, where the identifier information is used to indicate that the packet data network PDN connection signaling is in a suspended state;
  • the sending module 54 is configured to send the identifier information to the serving gateway SGW, and the identifier information is used to trigger the SGW to send the bearer update request message to the packet data network element PGW.
  • the identifier information is carried in the bearer update request message.
  • the identification information is represented by an information unit IE.
  • FIG. 6 is a structural block diagram (1) of a gateway recovery processing apparatus according to an embodiment of the present invention.
  • the apparatus shown in FIG. 6 further includes: a second receiving module 62 configured to receive globally from the terminal.
  • the unique temporary terminal identifier GUTI; the lookup module 64 is configured to look up the first mobility management unit according to the GUTI.
  • the second receiving module 62 is further configured to receive an indication message from the terminal, wherein the indication message is used to indicate whether the terminal supports the capability of the idle state signaling optimization ISR.
  • the bearer update request message further carries a source general packet radio service tunneling protocol control plane GTP-C identifier corresponding to the first mobility management unit and a destination GTP corresponding to the second mobility management unit. C logo.
  • the apparatus shown in FIG. 7 is a structural block diagram (2) of a gateway recovery processing apparatus according to an embodiment of the present invention. Compared with the apparatus shown in FIG. 5, the apparatus shown in FIG. 7 further includes: a third receiving module 72, configured to receive the bearer update from the SGW.
  • the response message of the request message wherein the response message carries at least one of the following: address information of the SGW, PGW address information, a GTP-C identifier corresponding to the SGW, and a GTP-C identifier corresponding to the PGW.
  • FIG. 8 is a structural block diagram (3) of a gateway recovery processing apparatus according to an embodiment of the present invention.
  • the apparatus shown in FIG. 8 further includes: a second sending module 82, configured to be in the second mobility.
  • the management unit After transmitting the identification information to the serving gateway SGW, the management unit sends a notification message to the home subscriber server HSS, wherein the notification message is used to notify the HHS that the terminal has been moved by the first mobility management unit to the second mobility. Management unit.
  • the first mobility management unit comprises: a mobility management entity MME or a serving general packet radio service support node SGSN; the second mobility management unit comprises: a mobility management entity MME or a serving general packet radio service support node SGSN.
  • each of the foregoing modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.
  • Another recovery processing method for a gateway comprising the following steps: in a case where the terminal moves from the first mobility management unit to the second mobility management unit, the first mobility management unit The second mobility management unit sends the identification information, where the identification information is used
  • the packet data network PDN connection signaling is indicated to be in a suspended state, and is used to trigger the serving gateway SGW to send the bearer update request message to the packet data network network element PGW.
  • the first mobility management unit sends the identifier information for indicating that the packet data network PDN connection signaling is in a suspended state and triggering the SGW to send the bearer update request message to the packet data network network element PGW to the second mobility.
  • the management unit, and the second mobility management unit send the identifier information and the bearer update request message to the PGW through the SGW, so that the PGW receives the bearer update request message, and if the PGW does not receive the bearer update request,
  • the PGW can never initiate the signaling of the PDN connection, which causes some downlink services to be undeliverable to the UE for a long time.
  • the above steps enable the PGW to be notified when the UE moves to the new mobility management unit, thereby ensuring the terminal pair. Receiving of downlink services.
  • the first mobility management unit comprises: a mobility management entity MME or a serving general packet radio service support node SGSN; the second mobility management unit comprises: a mobility management entity MME or a serving general packet radio service Support node SGSN.
  • gateway recovery processing device is provided, which is used to implement the foregoing embodiments and optional implementation manners, and has not been described again.
  • module may implement a combination of software and/or hardware of a predetermined function.
  • apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • the recovery processing device of the other gateway is applied to the first mobility management unit.
  • the method includes: a sending module, configured to move from the first mobility management unit to the second mobility management unit.
  • the identifier information is sent to the second mobility management unit, where the identifier information is used to indicate that the packet data network PDN connection signaling is in a suspended state, and is used to trigger the serving gateway SGW to send the bearer to the packet data network network element PGW. Update request message.
  • the first mobility management unit comprises: a mobility management entity MME or a serving general packet radio service support node SGSN; and the second mobility management unit comprises: a mobility management entity MME or a serving general packet radio service support node SGSN.
  • FIG. 10 is a flowchart (1) of a method for restoring a gateway according to an embodiment of the present invention. As shown in FIG. 10, the process includes the following steps:
  • Step S902 in a case where the terminal moves from the first mobility management unit to the second mobility management unit, the serving gateway SGW receives the identification information from the second mobility management unit, where the identifier information is used to indicate the packet data network.
  • PDN connection signaling is in a suspended state;
  • Step S904 The serving gateway SGW sends a bearer update request message to the packet data network element PGW, triggered by the identifier information.
  • the SGW receives, from the second mobility management unit, identifier information indicating that the packet data network PDN connection signaling is in a suspended state and triggering the SGW to send the bearer update request message to the packet data network element PGW, and then the SGW will The identification information and the bearer update request message are sent to the PGW, so that the PGW receives the bearer update request message.
  • the PGW cannot always initiate the signaling of the PDN connection. As a result, some downlink services cannot be delivered to the UE for a long time.
  • the above steps enable the PGW to be notified when the UE moves to the new mobility management unit, thereby ensuring the terminal's reception of the downlink service.
  • the foregoing may be used to send the identifier information in multiple manners.
  • the identifier information is carried in the bearer update request message.
  • the bearer update request message further carries a source general packet radio service tunneling protocol control plane GTP-C identifier corresponding to the first mobility management unit and a corresponding to the second mobility management unit. Purpose GTP-C identification.
  • the above step S904 involves the serving gateway SGW transmitting a bearer update request message to the packet data network element PGW, triggered by the identification information.
  • the SGW will update the request message for the bearer.
  • the response message is sent to the second mobility management unit, where the response message carries at least one of the following: address information of the SGW, PGW address information, GTP-C identifier corresponding to the SGW, and GTP corresponding to the PGW. C logo.
  • the first mobility management unit comprises: a mobility management entity MME or a serving general packet radio service support node SGSN; the second mobility management unit comprises: a mobility management entity MME or a serving general packet radio service Support node SGSN.
  • gateway recovery processing device is provided, which is used to implement the foregoing embodiments and optional implementation manners, and has not been described again.
  • module may implement a combination of software and/or hardware of a predetermined function.
  • the described apparatus is preferably implemented in software, but hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 11 is a structural block diagram (4) of a gateway recovery processing apparatus according to an embodiment of the present invention, applied to a serving gateway SGW, as shown in FIG. 11, the apparatus includes: a receiving module 102, configured to be at a terminal from a first mobility When the management unit moves to the second mobility management unit, the identifier information is received from the second mobility management unit, where the identifier information is used to indicate that the packet data network PDN connection signaling is in a suspended state; the first sending module 104. Set to send a bearer update request message to the packet data network element PGW, triggered by the identifier information.
  • the identifier information is carried in the bearer update request message.
  • the bearer update request message further carries a source general packet radio service tunneling protocol control plane GTP-C identifier corresponding to the first mobility management unit and a destination GTP corresponding to the second mobility management unit. C logo.
  • FIG. 12 is a structural block diagram (5) of a gateway recovery processing apparatus according to an embodiment of the present invention.
  • the apparatus shown in FIG. 12 further includes: a second sending module 112 configured to trigger on the identification information.
  • the response message for the bearer update request message is sent to the second mobility management unit, where the response message carries at least one of the following information. : SGW address information, PGW address information, GTP-C identifier corresponding to SGW, and GTP-C identifier corresponding to PGW.
  • the first mobility management unit comprises: a mobility management entity MME or a serving general packet radio service support node SGSN; and the second mobility management unit comprises: a mobility management entity MME or a serving general packet radio service support node SGSN.
  • each of the foregoing modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.
  • the optional embodiment provides a method for notifying the gateway to recover, including the following steps:
  • the UE moves to the new mobility management unit.
  • the old mobility management unit sends an indication that the network initiated PDN connection signaling is in a suspended state to the new mobility management unit, and the new mobility management unit is The bearer update request message sent by the serving gateway carries the network The indication that the PDN connection signaling is in a suspended state;
  • the serving gateway after receiving the indication that the PDN connection signaling initiated by the network is in a suspended state, the serving gateway sends a bearer update request message to the PGW.
  • FIG. 13 is a system block diagram of a notification gateway recovery in a power saving mode according to an embodiment of the present invention. As shown in FIG. 13, the process includes the following steps:
  • Step 1202 The UE moves to a new mobility management unit coverage area, and in the context delivery process, the old mobility management unit passes the mark of the network initiated PDN connection signaling suspension to the new mobility management unit;
  • Step 1204 The bearer update request sent by the new mobility management unit to the serving gateway carries a flag of the network-initiated PDN connection signaling suspension;
  • Step 1206 the serving gateway receives the flag in step S1202, and the serving gateway sends a bearer update request to the PGW.
  • FIG. 14 is a flowchart of a UE moving to a new MME according to an embodiment of the present invention. As shown in FIG. 14, the process includes the following steps;
  • Step 1301 The UE moves to the E-UTRAN coverage area of the MME, and the tracking area update request message sent to the MME carries the capability of whether the UE supports the ISR, in addition to the GUTI allocated by the UE under the old MME.
  • Step 1302 The new MME finds the old MME according to the GUTI identifier, and sends a context request signaling to perform a context acquisition process.
  • Step 1303 the old MME sends the mobility management and bearer information of the user to the new MME, and carries the flag of the network-initiated PDN connection signaling suspension in the returned context response message to the new MME;
  • the label may be represented by a separate information element (Information Element, referred to as IE).
  • Information Element Information Element, referred to as IE.
  • Step 1304 the new MME returns a context confirmation message to the old MME.
  • Step 1305 The new MME initiates an update bearer request to the S-GW, where the request message carries the source.
  • Step 1306, according to the flag in step S505, the S-GW sends an update bearer request to the P-GW; after this step, the PGW can initiate signaling of the PDN connection management.
  • Step 1307 the P-GW updates its own context and returns update bearer response information to the S-GW.
  • Step 1308 the S-GW returns an update bearer response to the new MME, and sends the destination GTP-C tunnel identifier, its own address, and the P-GW address and tunnel information specified by the S-GW to the new MME.
  • Step 1309 the new MME notifies the change of the HSS location by using the location update message.
  • Step 1310 The HSS sends location cancellation signaling to the old MME.
  • Step 1311 the old MME returns a location cancellation response to the HSS
  • Step 1312 the HSS confirms the location update of the new MME, and delivers the user subscription data to the new MME.
  • Step 1313 If the new MME confirms that the UE is valid in the current tracking area, send a tracking area update accept message to the UE.
  • Step 1314 If the new MME allocates a new GUTI identifier to the UE through the TAU procedure, the UE returns a tracking area update complete message to confirm to the new MME.
  • FIG. 15 is a flowchart of a UE moving to a new MME, and a new MME selecting a new SGW according to an embodiment of the present invention. As shown in FIG. 15, the process includes the following steps:
  • Step 1401 The UE moves to the E-UTRAN coverage area of the MME, and the tracking area update request message sent to the MME carries the capability of whether the UE supports the ISR, in addition to the GUTI allocated by the UE under the old MME.
  • Step 1402 The new MME finds the old MME according to the GUTI identifier, and sends a context request signaling to perform a context acquisition process.
  • Step 1403 the old MME sends the mobility management and bearer information of the user to the new MME, and carries the flag of the network-initiated PDN connection signaling suspension in the returned context response message to the new MME;
  • the tag can be represented by a separate information element (Information Element, IE for short). It is shown that when the UE is located in the old MME and the UE is in the power saving mode, the network-initiated PDN connection signaling is suspended, and the PGW receives the bearer update request sent by the SGW before attempting the same bearer management process;
  • Information Element Information Element
  • Step 1404 the new MME returns a context confirmation message to the old MME.
  • Step 1405 The new MME selects a new SGW to serve the UE, and the new MME initiates a session establishment request to the S-GW.
  • the request message carries the source GTP-C tunnel identifier and the destination GTP-C tunnel identifier.
  • Step 1406 The S-GW sends an update bearer request to the P-GW, and carries the source GTP-C tunnel identifier and the destination GTP-C tunnel identifier.
  • Step 1407 the P-GW updates its own context and returns an update bearer response information to the S-GW. After this step, the PGW may initiate signaling of the PDN connection management.
  • Step 1408 the S-GW returns a setup session response to the new MME, and brings the destination GTP-C tunnel identifier specified by the S-GW, its own address, and the address and tunnel information of the P-GW to the MME.
  • Step 1409 the new MME notifies the change of the HSS location by using the location update message
  • Step 1410 The HSS sends location cancellation signaling to the old MME.
  • Step 1411 the old MME returns a location cancellation response to the HSS
  • Step 1412 the HSS confirms the location update of the new MME, and delivers the user subscription data to the new MME.
  • Step 1413 If the new MME confirms that the UE is valid in the current tracking area, send a tracking area update accept message to the UE.
  • Step 1414 If the new MME allocates a new GUTI identifier to the UE through the TAU procedure, the UE returns a tracking area update complete message to confirm to the new MME.
  • the UE moves to the new MME coverage area as an example.
  • the processing method is similar, and therefore will not be described in detail.
  • the method for notifying the gateway in the power saving mode realizes that when the UE moves to the new mobility management unit, the PGW is notified, thereby ensuring the terminal receiving the downlink service.
  • a software is also provided, which is used to execute the above embodiment. And the technical solutions described in the alternative embodiments.
  • a storage medium is further provided, wherein the software includes the above-mentioned software, including but not limited to: an optical disk, a floppy disk, a hard disk, an erasable memory, and the like.
  • Computer-executable instructions are stored in the storage medium, and the computer-executable instructions are used to perform the above method.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the foregoing technical solution can realize that when the UE moves to the new mobility management unit, the PGW is notified, thereby implementing the terminal to receive the downlink service.

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Abstract

一种网关的恢复处理方法及装置，其中，该方法包括：在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，第二移动性管理单元从第一移动性管理单元接收标识信息，其中，该标记信息用于指示分组数据网PDN连接信令处于挂起状态；第二移动性管理单元将标识信息发送至服务网关SGW，并且该标记信息用于触发SGW将承载更新请求消息发送至分组数据网网元PGW。上述技术方案实现了UE移动至新的移动管理单元时，PGW得到通知，进而保证了终端对下行业务的接收。

Description

网关的恢复处理方法及装置 技术领域
本文涉及通信领域，具体而言，涉及一种网关的恢复处理方法及装置。
背景技术
第三代合作伙伴计划(3rd Generation Partnership Project，简称为3GPP)的标准化工作组，目前正致力于研究包交换核心网(Packet Switch Core，简称为PS Core)和全球移动通信系统无线接入网(Universal Mobile Telecommunication System Radio Access Network，简称为UTRAN)的演进，这个研究的课题叫做系统架构演进(System Architecture Evolution，简称为SAE)，目的是使得演进的分组网(Evolved Packet Core，简称EPC)可提供更高的传输速率，产生更短的传输延时，同时优化分组，及支持演进的UTRAN(Evolved UTRAN，简称为E-UTRAN)、UTRAN、无线局域网(Wireless Local Area Network，简称为WLAN)及其他非3GPP的接入网络之间的移动性管理。
目前SAE的架构如图1所示，其中包含了如下网元：演进的无线接入网(Evolved RAN，简称为E-RAN)，分组数据网(Packet Data Network，简称为PDN)，演进的分组网(E-Packet Core)。演进的分组网包含如下网元：移动管理实体(Mobility Management Entity，简称为MME)，在UMTS系统中，移动管理单元是SGSN(Serving GPRS Support Node，服务GPRS支持节点)；服务网关(Serving Gateway，简称为SGW)；分组数据网网关(PDN Gateway，简称为PGW)；策略与计费规则功能实体(Policy and Charging Rules Function，简称为PCRF)；归属用户服务器(Home Subscriber Server，简称为HSS)。
在相关技术中，用户设备(User Equipment，简称为UE)可能处于省电模式下，省电模式包括省电状态(Power saving state，简称为PSM)或者扩展非连续接收(Extended Discontinuous Reception，简称为eDRX)状态，在省电模式 下MME将无法寻呼到UE，UE也处于不可达状态，此时如果MME收到承载管理的信令后，获知UE不可达状态下，MME将UE暂时不可达的信息通知给PGW。图2为相关技术中MME收到承载管理信令的步骤：
步骤201，PGW向SGW发送建立承载请求消息，消息中携带承载服务质量(Quality of Service，简称为QoS)，业务流模版(Traffic Flow Template,TFT)，计费ID，PGW上行隧道端点标识(Tunnel Endpoint Identifier,TEID)；
步骤202，SGW收到建立承载请求消息后，SGW向MME转发建立承载请求消息，消息中携带承载QoS，TFT，SGW上行TEID；
步骤203，MME收到建立承载请求消息后，检查UE状态，如果UE处于空闲态并且UE激活了省电模式，那么MME开始向eNodeB进行寻呼，同时设置一个寻呼定时器；当寻呼定时器超时后，如果MME还没有收到寻呼响应后，MME就认为寻呼不成功；
步骤204，eNodeB收到寻呼消息后，开始寻呼UE；
步骤205，如果步骤203中，在定时器超时前，没有收到寻呼响应，MME认为寻呼不成功；MME向SGW返回建立承载响应消息，消息中携带特殊的原因值，指示SGW，UE由于处于省电模式暂时不可达，并且MME设置一个标识，说明目前网络发起的PDN连接信令处于挂起状态；
步骤206，SGW向PGW返回建立承载响应，响应消息中携带特殊的原因值，指示PGW UE由于处于省电模式暂时不可达；PGW收到这个特殊的原因值，PGW只在收到承载更新请求后才会再尝试进行同样的承载建立过程。
UE虽然处于省电模式下，但是UE仍然可以移动，当UE移动至新的移动管理单元下，如图3所示，移动管理单元可能还选择到原来的SGW为该UE服务，并向SGW发送步骤305消息，但是如果UE只在系统内部(如在E-UTRAN系统内)移动，服务网关可能不向PGW发送承载更新请求消息。如果PGW没有收到承载更新请求，PGW也就一直不能发起PDN连接的信令，这也就导致了有些下行业务长时间无法投递至UE。
针对相关技术中，UE移动至新的移动管理单元时，PGW无法得到通知， 导致下行业务无法发送至UE的问题，还未提出有效的解决方案。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供了一种网关的恢复处理方法及装置，能够实现当UE移动至新的移动管理单元时，PGW得到通知。
根据本发明实施例的一个方面，提供了一种网关的恢复处理方法，包括：在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，所述第二移动性管理单元从所述第一移动性管理单元接收标识信息，其中，所述标识信息用于指示分组数据网PDN连接信令处于挂起状态；所述第二移动性管理单元将所述标识信息发送至服务网关SGW，并且所述标识信息用于触发所述SGW将承载更新请求消息发送至分组数据网网元PGW。
可选地，所述标识信息携带于所述承载更新请求消息中。
可选地，所述标识信息用一个信息单元IE表示。
可选地，所述第二移动性管理单元从所述第一移动性管理单元接收标识信息之前包括：所述第二移动性管理单元从所述终端接收全球唯一临时终端标识GUTI；所述第二移动性管理单元根据所述GUTI查找所述第一移动性管理单元。
可选地，所述第二移动性管理单元从所述终端接收全球唯一临时终端标识GUTI时，所述方法还包括：所述第二移动性管理单元从所述终端接收指示消息，其中，所述指示消息用于指示所述终端是否支持空闲状态的信令优化ISR的能力。
可选地，所述承载更新请求消息中还携带有与所述第一移动性管理单元对应的源通用分组无线业务隧道协议控制面GTP-C标识和与所述第二移动性管理单元对应的目的GTP-C标识。
可选地，所述第二移动性管理单元将所述标识信息发送至服务网关SGW之后包括：所述第二移动性管理单元从所述SGW接收所述承载更新请求消 息的响应消息，其中，所述响应消息中携带有以下至少之一信息：所述SGW的地址信息、所述PGW地址信息、与所述SGW对应的GTP-C标识、与所述PGW对应的GTP-C标识。
可选地，所述第二移动性管理单元将所述标识信息发送至服务网关SGW之后包括：所述第二移动性管理单元向归属用户服务器HSS发送通知消息，其中，所述通知消息用于通知所述HHS所述终端已由所述第一移动性管理单元移动至所述第二移动性管理单元。
可选地，所述第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；所述第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
根据本发明实施例的又一个方面，还提供了另一种网关的恢复处理方法，包括：在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，所述第一移动性管理单元向所述第二移动性管理单元发送标识信息，其中，所述标识信息用于指示分组数据网PDN连接信令处于挂起状态，并用于触发服务网关SGW向分组数据网网元PGW发送所述承载更新请求消息。
可选地，所述第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；所述第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
根据本发明实施例的再一个方面，还提供了另一种网关的恢复处理方法，包括：在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，服务网关SGW从所述第二移动性管理单元接收标识信息，其中，所述标识信息用于指示分组数据网PDN连接信令处于挂起状态；所述服务网关SGW在所述标识信息的触发下，将承载更新请求消息发送至分组数据网网元PGW。
可选地，所述标识信息携带于所述承载更新请求消息中。
可选地，所述承载更新请求消息中还携带有与所述第一移动性管理单元对应的源通用分组无线业务隧道协议控制面GTP-C标识和与所述第二移动性管理单元对应的目的GTP-C标识。
可选地，所述服务网关SGW在所述标识信息的触发下，将承载更新请求消息发送至分组数据网网元PGW之后包括：所述SGW将对于所述承载更新请求消息的响应消息发送至所述第二移动性管理单元，其中，所述响应消息中携带有以下至少之一信息：所述SGW的地址信息、所述PGW地址信息、与所述SGW对应的GTP-C标识、与所述PGW对应的GTP-C标识。
可选地，所述第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；所述第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
根据本发明实施例的一个方面，提供了一种网关的恢复处理装置，应用于第二移动性管理单元，包括：第一接收模块，设置为在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，从所述第一移动性管理单元接收标识信息，其中，所述标识信息用于指示分组数据网PDN连接信令处于挂起状态；第一发送模块，设置为将所述标识信息发送至服务网关SGW，并且所述标识信息用于触发所述SGW将承载更新请求消息发送至分组数据网网元PGW。
可选地，所述标识信息携带于所述承载更新请求消息中。
可选地，所述标识信息用一个信息单元IE表示。
可选地，所述第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；所述第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
根据本发明实施例的又一个方面，还提供了另一种网关的恢复处理装置，应用于第一移动性管理单元，包括：发送模块，设置为在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，向所述第二移动性管理单元发送标识信息，其中，所述标识信息用于指示分组数据网PDN连接信令处于挂起状态，并用于触发服务网关SGW向分组数据网网元PGW发送所述承载更新请求消息。
可选地，所述第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；所述第二移动性管理单元包括：移动 性管理实体MME或者服务通用分组无线业务支持节点SGSN。
根据本发明实施例的再一个方面，还提供了另一种网关的恢复处理装置，应用于服务网关SGW，包括：接收模块，设置为在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，从所述第二移动性管理单元接收标识信息，其中，所述标识信息用于指示分组数据网PDN连接信令处于挂起状态；第一发送模块，设置为在所述标识信息的触发下，将承载更新请求消息发送至分组数据网网元PGW。
可选地，所述标识信息携带于所述承载更新请求消息中。
可选地，所述第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；所述第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
通过本发明实施例，采用在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，第二移动性管理单元从第一移动性管理单元接收标识信息，其中，该标识信息用于指示分组数据网PDN连接信令处于挂起状态；第二移动性管理单元将标识信息发送至服务网关SGW，并且该标识信息用于触发SGW将承载更新请求消息发送至分组数据网网元PGW。上述技术方案能够实现当UE移动至新的移动管理单元时，PGW得到通知，进而实现了终端对下行业务的接收。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1是根据相关技术的演进分组网络系统结构的示意图；
图2是根据相关技术的建立承载过程的信令流程图；
图3是根据相关技术的通过跟踪区更新流程的信令流程图；
图4是根据本发明实施例的网关的恢复处理方法的流程图；
图5是根据本发明实施例的网关的恢复处理装置的结构框图；
图6是根据本发明实施例的网关的恢复处理装置的结构框图(一)；
图7是根据本发明实施例的网关的恢复处理装置的结构框图(二)；
图8是根据本发明实施例的网关的恢复处理装置的结构框图(三)；
图9是根据本发明实施例的另一种网关的恢复处理装置的结构框图；
图10是根据本发明实施例的网关的恢复处理方法的流程图(一)；
图11是根据本发明实施例的网关的恢复处理装置的结构框图(四)；
图12是根据本发明实施例的网关的恢复处理装置的结构框图(五)；
图13是根据本发明实施例的省电模式下通知网关恢复的流程图；
图14是根据本发明实施例的UE移动至新的MME的流程图；
图15是根据本发明实施例的UE移动至新的MME，新MME选择新SGW的流程图。
本发明的实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
在本实施例中提供了一种网关的恢复处理方法，图4是根据本发明实施例的网关的恢复处理方法的流程图，如图4所示，该流程包括如下步骤：
步骤S402，在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，第二移动性管理单元从第一移动性管理单元接收标识信息，其中，该标识信息用于指示分组数据网PDN连接信令处于挂起状态；
步骤S404，第二移动性管理单元将标识信息发送至服务网关SGW，并且该标识信息用于触发SGW将承载更新请求消息发送至分组数据网网元PGW。
通过上述步骤，第二移动性管理单元将从第一移动性管理单元接收到的用于指示分组数据网PDN连接信令处于挂起状态以及触发SGW将承载更新请求消息发送至分组数据网网元PGW的标识信息发送至SGW，从而使得PGW接收到承载更新请求消息，相比于相关技术中，如果PGW没有收到承载更新请求，PGW也就一直不能发起PDN连接的信令，这也就导致了有些 下行业务长时间无法投递至UE，上述步骤可以实现UE移动至新的移动管理单元时，PGW得到通知，进而保证了终端对下行业务的接收。
上述对于标识信息的发送方式可以有很多种，在一个可选实施例中，标识信息携带于该承载更新请求消息中，通过对承载更新请求消息的发送过程发送上述标识信息。
在一个可选实施例中，上述标识信息用一个信息单元IE表示。
上述步骤S402涉及到第二移动性管理单元从第一移动性管理单元接收标识信息，在一个可选实施例中，在该步骤之前，第二移动性管理单元从终端接收全球唯一临时终端标识GUTI；第二移动性管理单元根据该GUTI查找第一移动性管理单元。进而可以实现第二移动性管理单元从第一移动性管理单元接收承载更新请求消息以及标识信息。
在一个可选实施例中，第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
在本实施例中还提供了一种网关的恢复处理装置，该装置用于实现上述实施例及可选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图5是根据本发明实施例的网关的恢复处理装置的结构框图，应用于第二移动性管理单元，如图5所示，该装置包括：第一接收模块52，设置为在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，从该第一移动性管理单元接收标识信息，其中，该标识信息用于指示分组数据网PDN连接信令处于挂起状态；第一发送模块54，设置为将该标识信息发送至服务网关SGW，并且该标识信息用于触发该SGW将承载更新请求消息发送至分组数据网网元PGW。
可选地，该标识信息携带于该承载更新请求消息中。
可选地，该标识信息用一个信息单元IE表示。
图6是根据本发明实施例的网关的恢复处理装置的结构框图(一)，相对图5所示装置，图6所示该装置还包括：第二接收模块62，设置为从该终端接收全球唯一临时终端标识GUTI；查找模块64，设置为根据该GUTI查找该第一移动性管理单元。
可选地，第二接收模块62还设置为从该终端接收指示消息，其中，该指示消息用于指示该终端是否支持空闲状态的信令优化ISR的能力。
可选地，该承载更新请求消息中还携带有与该第一移动性管理单元对应的源通用分组无线业务隧道协议控制面GTP-C标识和与该第二移动性管理单元对应的目的GTP-C标识。
图7是根据本发明实施例的网关的恢复处理装置的结构框图(二)，相对图5所示装置，图7所示装置还包括：第三接收模块72，设置为从SGW接收该承载更新请求消息的响应消息，其中，该响应消息中携带有以下至少之一信息：SGW的地址信息、PGW地址信息、与SGW对应的GTP-C标识、与该PGW对应的GTP-C标识。
图8是根据本发明实施例的网关的恢复处理装置的结构框图(三)，相对图7所示装置，图8所示装置还包括：第二发送模块82，设置为在该第二移动性管理单元将该标识信息发送至服务网关SGW之后，向归属用户服务器HSS发送通知消息，其中，该通知消息用于通知该HHS该终端已由该第一移动性管理单元移动至该第二移动性管理单元。
可选地，该第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；该第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
需要说明的是，上述每个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述模块分别位于多个处理器中。
在本实施例中提供了另一种网关的恢复处理方法，该方法包括如下步骤：在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，第一移动性管理单元向第二移动性管理单元发送标识信息，其中，该标识信息用于 指示分组数据网PDN连接信令处于挂起状态，并用于触发服务网关SGW向分组数据网网元PGW发送该承载更新请求消息。
通过该步骤，第一移动性管理单元将用于指示分组数据网PDN连接信令处于挂起状态以及触发SGW将承载更新请求消息发送至分组数据网网元PGW的标识信息发送至第二移动性管理单元，进而第二移动性管理单元通过SGW将标识信息以及承载更新请求消息发送至PGW，从而使得PGW接收到承载更新请求消息，相比于相关技术中，如果PGW没有收到承载更新请求，PGW也就一直不能发起PDN连接的信令，这也就导致了有些下行业务长时间无法投递至UE，上述步骤实现了UE移动至新的移动管理单元时，PGW得到通知，进而保证了终端对下行业务的接收。
在一个可选实施例中，第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
在本实施例中还提供了另一种网关的恢复处理装置，该装置用于实现上述实施例及可选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
该另一种网关的恢复处理装置，应用于第一移动性管理单元，如图9所示，包括：发送模块，设置为在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，向第二移动性管理单元发送标识信息，其中，该标识信息用于指示分组数据网PDN连接信令处于挂起状态，并用于触发服务网关SGW向分组数据网网元PGW发送该承载更新请求消息。
可选地，第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
在本实施例中提供了另一种网关的恢复处理方法，图10是根据本发明实施例的网关的恢复处理方法的流程图(一)，如图10所示，该流程包括如下步骤：
步骤S902，在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，服务网关SGW从该第二移动性管理单元接收标识信息，其中，该标识信息用于指示分组数据网PDN连接信令处于挂起状态；
步骤S904，服务网关SGW在该标识信息的触发下，将承载更新请求消息发送至分组数据网网元PGW。
通过该步骤，SGW从第二移动性管理单元接收用于指示分组数据网PDN连接信令处于挂起状态以及触发SGW将承载更新请求消息发送至分组数据网网元PGW的标识信息，进而SGW将标识信息以及承载更新请求消息发送至PGW，从而使得PGW接收到承载更新请求消息，相比于相关技术中，如果PGW没有收到承载更新请求，PGW也就一直不能发起PDN连接的信令，这也就导致了有些下行业务长时间无法投递至UE，上述步骤实现了UE移动至新的移动管理单元时，PGW得到通知，进而保证了终端对下行业务的接收。
上述对于标识信息的发送方式可以有很多种，在一个可选实施例中，标识信息携带于该承载更新请求消息中。
在一个可选实施例中，承载更新请求消息中还携带有与该第一移动性管理单元对应的源通用分组无线业务隧道协议控制面GTP-C标识和与该第二移动性管理单元对应的目的GTP-C标识。
上述步骤S904涉及到服务网关SGW在该标识信息的触发下，将承载更新请求消息发送至分组数据网网元PGW，在一个可选实施例中，在该步骤之后SGW将对于该承载更新请求消息的响应消息发送至第二移动性管理单元，其中，该响应消息中携带有以下至少之一信息：SGW的地址信息、PGW地址信息、与SGW对应的GTP-C标识、与PGW对应的GTP-C标识。
在一个可选实施例中，第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
在本实施例中还提供了另一种网关的恢复处理装置，该装置用于实现上述实施例及可选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所 描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图11是根据本发明实施例的网关的恢复处理装置的结构框图(四)，应用于服务网关SGW，如图11所示，该装置包括：接收模块102，设置为在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，从该第二移动性管理单元接收标识信息，其中，该标识信息用于指示分组数据网PDN连接信令处于挂起状态；第一发送模块104，设置为在该标识信息的触发下，将承载更新请求消息发送至分组数据网网元PGW。
可选地，该标识信息携带于该承载更新请求消息中。
可选地，该承载更新请求消息中还携带有与该第一移动性管理单元对应的源通用分组无线业务隧道协议控制面GTP-C标识和与该第二移动性管理单元对应的目的GTP-C标识。
图12是根据本发明实施例的网关的恢复处理装置的结构框图(五)，相对图11所示装置，图12所示装置还包括：第二发送模块112，设置为在该标识信息的触发下，将承载更新请求消息发送至分组数据网网元PGW之后，将对于该承载更新请求消息的响应消息发送至该第二移动性管理单元，其中，该响应消息中携带有以下至少之一信息：SGW的地址信息、PGW地址信息、与SGW对应的GTP-C标识、与PGW对应的GTP-C标识。
可选地，第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
需要说明的是，上述每个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述模块分别位于多个处理器中。
本可选实施例提供了一种通知网关恢复的方法，包含如下步骤：
UE移动至新的移动管理单元下，在上下文传递过程中，旧的移动管理单元将网络发起的PDN连接信令处于挂起状态的指示发送至新的移动管理单元，新的移动管理单元在向服务网关发送的承载更新请求消息中携带网络发 起的PDN连接信令处于挂起状态的指示；
可选地，服务网关收到网络发起的PDN连接信令处于挂起状态的指示后，向PGW发送承载更新请求消息。
图13是根据本发明实施例的省电模式下通知网关恢复的系统框图，如图13所示，该流程包括如下步骤：
步骤1202，UE移动至新的移动管理单元覆盖区域下，在上下文传递过程中，旧的移动管理单元将网络发起的PDN连接信令挂起的标记传递至新的移动管理单元；
步骤1204，新的移动管理单元向服务网关发送的承载更新请求中携带网络发起的PDN连接信令挂起的标记；
步骤1206，服务网关收到步骤S1202中的标记，服务网关向PGW发送承载更新请求；
图14是根据本发明实施例的UE移动至新的MME的流程图，如图14所示，该流程包括如下步骤；
步骤1301，UE移动到MME下的E-UTRAN覆盖区，在向MME发送的跟踪区更新请求消息中除了携带UE在旧MME下分配的GUTI，还要携带UE是否支持ISR的能力；
步骤1302，新MME根据GUTI标识找到旧MME，发送上下文请求信令进行上下文获取过程；
步骤1303，旧MME将用户的移动管理和承载信息发送给新MME，并在返回的上下文响应消息中携带网络发起的PDN连接信令挂起的标记传递给新的MME；
该标记可以用一个单独的信息单元(Information Element，简称为IE)来表示，当UE位于旧MME时并且UE处于省电模式下，网络发起的PDN连接信令挂起，PGW收到SGW发送的承载更新请求后才能尝试同样的承载管理流程；
步骤1304，新MME向旧MME回复上下文确认消息；
步骤1305，新MME向S-GW发起更新承载请求，请求消息中携带源 GTP-C隧道标识和目的GTP-C隧道标识，S-GW更新承载的绑定关系，网络发起的PDN连接信令挂起的标记。
步骤1306，根据步骤S505中的标记，S-GW向P-GW发送更新承载请求；这个步骤后，PGW又可以发起PDN连接管理的信令了
步骤1307，P-GW更新自己的上下文并向S-GW返回更新承载响应信息；
步骤1308，S-GW向新MME返回更新承载响应，将S-GW指定的目的GTP-C隧道标识、自身的地址以及P-GW的地址和隧道信息等带给新MME；
步骤1309，新MME通过位置更新消息通知HSS位置的改变；
步骤1310，HSS向旧MME发送位置取消信令；
步骤1311，旧MME向HSS返回位置取消响应；
步骤1312，HSS对新MME的位置更新进行确认，并将用户签约数据传递至新MME；
步骤1313，如果新MME确认UE在当前的跟踪区内有效，则向UE发送跟踪区更新接受消息；
步骤1314，如果新MME通过TAU流程为UE分配了一个新的GUTI标识，那么UE会返回跟踪区更新完成消息向新MME进行确认。
图15是根据本发明实施例的UE移动至新的MME，新MME选择新SGW的流程图，如图15所示，该流程包括如下步骤：
步骤1401，UE移动到MME下的E-UTRAN覆盖区，在向MME发送的跟踪区更新请求消息中除了携带UE在旧MME下分配的GUTI，还要携带UE是否支持ISR的能力；
步骤1402，新MME根据GUTI标识找到旧MME，发送上下文请求信令进行上下文获取过程；
步骤1403，旧MME将用户的移动管理和承载信息发送给新MME，并在返回的上下文响应消息中携带网络发起的PDN连接信令挂起的标记传递给新的MME；
该标记可以用一个单独的信息单元(Information Element，简称为IE)来表 示，当UE位于旧MME时并且UE处于省电模式下，网络发起的PDN连接信令挂起，PGW收到SGW发送的承载更新请求后才能尝试同样的承载管理流程；
步骤1404，新MME向旧MME回复上下文确认消息；
步骤1405，新MME选择新的SGW为UE服务，新MME向S-GW发起建立会话请求，请求消息中携带源GTP-C隧道标识和目的GTP-C隧道标识；
步骤1406，S-GW向P-GW发送更新承载请求，并携带源GTP-C隧道标识和目的GTP-C隧道标识；
步骤1407，P-GW更新自己的上下文并向S-GW返回更新承载响应信息；这个步骤后，PGW又可以发起PDN连接管理的信令了；
步骤1408，S-GW向新MME返回建立会话响应，将S-GW指定的目的GTP-C隧道标识、自身的地址以及P-GW的地址和隧道信息等带给MME；
步骤1409，新MME通过位置更新消息通知HSS位置的改变；
步骤1410，HSS向旧MME发送位置取消信令；
步骤1411，旧MME向HSS返回位置取消响应；
步骤1412，HSS对新MME的位置更新进行确认，并将用户签约数据传递至新MME；
步骤1413，如果新MME确认UE在当前的跟踪区内有效，则向UE发送跟踪区更新接受消息；
步骤1414，如果新MME通过TAU流程为UE分配了一个新的GUTI标识，那么UE会返回跟踪区更新完成消息向新MME进行确认。
本实施例中是以UE移动至新的MME覆盖区域为例说明的；对于UE移动至新的SGSN，处理方法与其类似，故不再详细说明。
综上所述，通过本发明实施例提供的省电模式下通知网关恢复的方法，实现了UE移动至新的移动管理单元时，PGW得到通知，进而保证了终端对下行业务的接收。
在另外一个实施例中，还提供了一种软件，该软件用于执行上述实施例 及可选实施方式中描述的技术方案。
在另外一个实施例中，还提供了一种存储介质，该存储介质中存储有上述软件，该存储介质包括但不限于：光盘、软盘、硬盘、可擦写存储器等。所述存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行上述方法。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的可选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
上述技术方案能够实现当UE移动至新的移动管理单元时，PGW得到通知，进而实现了终端对下行业务的接收。

Claims (18)

  1. 一种网关的恢复处理方法，包括：
    在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，所述第二移动性管理单元从所述第一移动性管理单元接收标识信息，其中，所述标识信息用于指示分组数据网PDN连接信令处于挂起状态；
    所述第二移动性管理单元将所述标识信息发送至服务网关SGW，并且所述标识信息用于触发所述SGW将承载更新请求消息发送至分组数据网网元PGW。
  2. 根据权利要求1所述的方法，其中，所述标识信息携带于所述承载更新请求消息中。
  3. 根据权利要求1所述的方法，其中，所述标识信息用一个信息单元IE表示。
  4. 根据权利要求1至3中任一项所述的方法，其中，
    所述第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；所述第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
  5. 一种网关的恢复处理方法，包括：
    在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，所述第一移动性管理单元向所述第二移动性管理单元发送标识信息，其中，所述标识信息用于指示分组数据网PDN连接信令处于挂起状态，并用于触发服务网关SGW向分组数据网网元PGW发送承载更新请求消息。
  6. 根据权利要求5所述的方法，其中，所述第一移动性管理单元包括：
    移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；所述第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
  7. 一种网关的恢复处理方法，包括：
    在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，服 务网关SGW从所述第二移动性管理单元接收标识信息，其中，所述标识信息用于指示分组数据网PDN连接信令处于挂起状态；
    所述服务网关SGW在所述标识信息的触发下，将承载更新请求消息发送至分组数据网网元PGW。
  8. 根据权利要求7所述的方法，其中，所述标识信息携带于所述承载更新请求消息中。
  9. 根据权利要求7至8中任一项所述的方法，其中，
    所述第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；所述第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
  10. 一种网关的恢复处理装置，应用于第二移动性管理单元，包括：
    第一接收模块，设置为在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，从所述第一移动性管理单元接收标识信息，其中，所述标识信息用于指示分组数据网PDN连接信令处于挂起状态；
    第一发送模块，设置为将所述标识信息发送至服务网关SGW，并且所述标识信息用于触发所述SGW将承载更新请求消息发送至分组数据网网元PGW。
  11. 根据权利要求10所述的装置，其中，所述标识信息携带于所述承载更新请求消息中。
  12. 根据权利要求10所述的装置，其中，所述标识信息用一个信息单元IE表示。
  13. 根据权利要求10至12中任一项所述的装置，其中，
    所述第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；所述第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
  14. 一种网关的恢复处理装置，应用于第一移动性管理单元，包括：
    发送模块，设置为在终端从第一移动性管理单元移动至第二移动性管理 单元的情况下，向所述第二移动性管理单元发送标识信息，其中，所述标识信息用于指示分组数据网PDN连接信令处于挂起状态，并用于触发服务网关SGW向分组数据网网元PGW发送承载更新请求消息。
  15. 根据权利要求14所述的装置，其中，
    所述第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；所述第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
  16. 一种网关的恢复处理装置，应用于服务网关SGW，包括：
    接收模块，设置为在终端从第一移动性管理单元移动至第二移动性管理单元的情况下，从所述第二移动性管理单元接收标识信息，其中，所述标识信息用于指示分组数据网PDN连接信令处于挂起状态；
    第一发送模块，设置为在所述标识信息的触发下，将承载更新请求消息发送至分组数据网网元PGW。
  17. 根据权利要求16所述的装置，其中，所述标识信息携带于所述承载更新请求消息中。
  18. 根据权利要求16至17中任一项所述的装置，其中，所述第一移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN；所述第二移动性管理单元包括：移动性管理实体MME或者服务通用分组无线业务支持节点SGSN。
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