WO2012097524A1 - 移动管理网元复位的处理方法、设备及系统 - Google Patents
移动管理网元复位的处理方法、设备及系统 Download PDFInfo
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- WO2012097524A1 WO2012097524A1 PCT/CN2011/070489 CN2011070489W WO2012097524A1 WO 2012097524 A1 WO2012097524 A1 WO 2012097524A1 CN 2011070489 W CN2011070489 W CN 2011070489W WO 2012097524 A1 WO2012097524 A1 WO 2012097524A1
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- Prior art keywords
- user terminal
- network element
- management network
- mobility management
- context
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- 238000000034 method Methods 0.000 title claims abstract description 90
- 238000012545 processing Methods 0.000 title claims abstract description 74
- 230000011664 signaling Effects 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 50
- 230000008569 process Effects 0.000 claims description 49
- 238000001994 activation Methods 0.000 claims description 7
- CSRZQMIRAZTJOY-UHFFFAOYSA-N trimethylsilyl iodide Substances C[Si](C)(C)I CSRZQMIRAZTJOY-UHFFFAOYSA-N 0.000 description 19
- 230000004044 response Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000003672 processing method Methods 0.000 description 6
- 238000010295 mobile communication Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000000750 progressive effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/19—Connection re-establishment
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a method, device, and system for processing a mobility management network element reset.
- the user terminal accesses through the local wireless access network
- the mobile management network element is responsible for the location management, connection management, security authentication, gateway selection, and the like of the user terminal
- the service gateway is the user terminal.
- the local access gateway is responsible for access technology related connection management and data forwarding
- the data gateway is a gateway for the user terminal to access the external data network.
- the monthly service gateway detects that the mobility management network element is reset and deletes the user context related to the mobility management network element.
- the user terminal needs to reattach to the network to perform the service, resulting in the redistribution of the Internet Protocol (IP) address of the user terminal and the re-registration of the service domain.
- IP Internet Protocol
- the user terminal has to hang up and try again to perform the service normally.
- the called service of the user terminal there are two processing schemes:
- the serving gateway triggers the reset mobile management network element to initiate an International Mobile Subscriber Identity (IMSI) or a temporary mobile subscriber identity (S-Temporary Mobile Subscriber Identity, S- TMSI) or Packet Temporary Mobile Subscriber Identity (P-TMSI) paging.
- IMSI International Mobile Subscriber Identity
- S-Temporary Mobile Subscriber Identity S- TMSI
- P-TMSI Packet Temporary Mobile Subscriber Identity
- the mobility management network element of the service user terminal is reset, the user terminal needs to be reattached to the network to perform the service, and the continuity of the service of the user terminal cannot be guaranteed.
- the embodiment of the invention provides a processing method, device and system for resetting a mobile management network element,
- the context of the user terminal is obtained from the service gateway, thereby ensuring the continuity of the service of the user terminal.
- the technical solution adopted by the embodiment of the present invention is:
- a method for processing a mobility management network element reset includes:
- the mobility management network element obtains the context of the user terminal saved by the service gateway from the service gateway of the service user terminal;
- a mobile management network element including:
- a context obtaining unit configured to acquire, from a serving gateway of the service user terminal, a context of the user terminal saved by the service gateway;
- an establishing unit configured to establish, for the user terminal, a signaling connection of the signaling message and/or the service data according to the context of the user terminal.
- a service gateway including:
- a saving unit configured to save a context of the user terminal served by the reset mobility management network element after learning that the mobility management network element is reset;
- a receiving unit configured to receive a context request message related to the user terminal
- a sending unit configured to send, after the receiving unit receives the context request message, a context of the user terminal saved by the saving unit to a mobile management network element that sends the context request message.
- a processing system for resetting a mobility management network element comprising: a mobility management network element and a monthly service gateway; the service gateway, configured to save the reset mobility management network element after learning that the mobility management network element is reset Context of the served user terminal, and after receiving the context request message related to the user terminal, sending the saved context of the user terminal to the mobility management network element that sends the context request message; Context, and establishing a transport connection of signaling messages and/or service data for the user terminal according to the context of the user terminal.
- FIG. 1 is a schematic diagram of a logical architecture of a next generation mobile communication network
- FIG. 2 is a flowchart of a method for processing a mobility management network element reset according to an embodiment of the present invention
- FIG. 4 is a flowchart of a method for processing a mobile management network element reset in a user terminal as a called party according to an embodiment of the present invention
- FIG. 5 is a flowchart of a method for processing a mobile management network element reset according to an embodiment of the present invention when a user terminal is used as a calling party;
- FIG. 6 is a flow chart of user temporary identification redistribution in an embodiment of the present invention.
- FIG. 7 is a schematic structural diagram of a mobility management network element according to an embodiment of the present invention.
- FIG. 8 is a schematic structural diagram of a service gateway according to an embodiment of the present invention.
- FIG. 9 is another schematic structural diagram of a service gateway according to an embodiment of the present invention.
- the next-generation mobile communication network may be an Evolved Packet System (EPS) network, as shown in FIG. 1, where the radio access network may be a universal terrestrial radio access network (Universal Terrestrial) Radio Access Network (UTRAN) I GSM/EDGE Radio Access Network (GERAN) / Evolved Universal Terrestrial Radio Access Network (E-UTRAN), the mobility management network element can be Mobility Management Entity ( Mobility Management Entity (MME) or GPRS Service Support Node (SGSN), the service gateway can be a Serving Gateway (S-GW), and the data gateway can be a Packet Data Network Gateway (PDN). -GW).
- MME Mobility Management Entity
- SGSN GPRS Service Support Node
- S-GW Serving Gateway
- PDN Packet Data Network Gateway
- FIG. 2 it is a flowchart of a method for processing a mobility management network element reset according to an embodiment of the present invention, which includes the following steps:
- Step 201 The mobility management network element acquires, according to a service gateway of the service user terminal, a context of the user terminal saved by the service gateway.
- Step 202 Establish a transmission connection of the signaling message and/or the service data for the user terminal according to the context of the user terminal.
- the transmitting connection for establishing signaling messages and/or service data for the user terminal according to the context of the user terminal includes:
- the mobility management network element establishes a user plane tunnel between the radio access network and the serving gateway according to the acquired context of the user terminal, establishes a control plane tunnel between the mobility management network element and the serving gateway, and establishes a radio access network.
- the tunnel information and the tunnel information of the mobility management network element are sent to the serving gateway; triggering the establishment of the radio bearer between the user terminal and the radio access network.
- the mobility management network element is a mobility management network element after reset and restart
- the user terminal is a service terminal served by the reset mobility management gateway
- the reset mobility management network element may be the mobile in step 201.
- the management network element can also be other mobile management network elements in the network. That is, the mobility management network element in step 201 may be a mobility management network element after resetting and restarting, and correspondingly, the user terminal is a user terminal of the month before the mobile management network element is reset; and, in addition, the mobile in step 201
- the management network element may also be a normally operating mobility management network element, and the user terminal is a user terminal served by other mobile management network elements before resetting.
- the method for processing the mobility management network element reset in the embodiment of the present invention may be applied to an EPS network, where the mobility management network element may be an S4 SGSN (General Packet Radio Service Support Node) or an MME (Mobility Management Entity, mobility management). Entity), the service gateway can be an SGW (Serving Gateway).
- S4 SGSN General Packet Radio Service Support Node
- MME Mobility Management Entity, mobility management. Entity
- SGW Serving Gateway
- the service management gateway resets the context information of the user terminal of the reset mobile management network element, so that the mobile management network element can be moved after resetting and restarting.
- Management network element or other mobile management network that works normally.
- the service request process of the terminal ensures the operation of the user service.
- the service gateway needs to be configured. After the service gateway learns that the mobility management network element is reset, the context of the user terminal served by the reset mobility management network element is saved on the service gateway. If the user terminal is in the connected state, the serving gateway needs to release the user plane information of the SGSN, the RNC (Radio Network Controller), or the eNodeB (Evolved Node B) in the context, and retain the user. The remaining context of the terminal.
- the processing method for resetting the mobility management network element in the embodiment of the present invention may also be directed only to a specific user terminal, which is referred to herein as a user terminal that initiates a reset processing mechanism, that is, to comply with the present invention.
- the terminal of the processing mechanism of the embodiment of the invention; and for the user terminal that does not initiate the reset processing mechanism, the processing can be performed according to the existing conventional processing manner.
- the method may further include:
- the service gateway determines that the user terminal initiates a reset processing mechanism.
- the service gateway may determine according to any one of the following manners:
- the service gateway determines that the user terminal initiates a reset processing mechanism. That is to say, if the service gateway saves the user parameter of the user terminal served by a reset mobility management network element, the user terminal initiates a reset processing mechanism by default.
- the user parameters include: a temporary identifier and a location identifier of the user terminal, and may further include: a security parameter.
- the temporary identifier of the user terminal may be an S-TMSI, and the location identifier may be a TAI (Tracking Area Identity) list; if the mobility management network element is an S4 SGSN, The temporary identifier of the user terminal may be P-TMSI, and the location identifier may be a routed area identifier (RAI).
- the security parameter is used for message encryption or integrity protection between the mobility management network element and the user, or for message encryption or integrity protection between the mobility management network element and the eNodeB or RNC. The process of the service gateway acquiring and saving the user parameters of the user terminal will be described in detail later.
- the serving gateway determines, according to the reset processing mechanism indication information sent by the mobility management network element, that the user terminal initiates a reset processing mechanism.
- the serving gateway deletes the bearer context in the context of the user terminal that is not allowed to start the reset processing mechanism, and retains the remaining context.
- the service gateway is notified to store the user parameter of the user terminal, which is described in detail below.
- FIG. 3 it is a flowchart of storing user parameters on a service gateway in the embodiment of the present invention.
- the process corresponds to a process of attaching a user terminal or a PDP (Packet Data Protocol) context activation process, and includes the following steps:
- Step 301 The user terminal sends an attach request/PDP context activation request message to the mobility management network element.
- Step 302 After receiving the request message, the mobility management network element sends a setup session request message to a service gateway serving the user terminal.
- Step 303 The service gateway returns a session establishment response message to the mobility management network element.
- Step 304 After receiving the setup session response message, the mobility management network element sends an attach accept/PDP context activation accept message to the user terminal.
- Step 305 The mobility management network element sends an update bearer request message to the serving gateway.
- Step 306 The serving gateway returns an update bearer response message to the mobility management network element.
- the foregoing process is a process for attaching a user terminal and a PDP context activation process when the mobile management network element works normally in the prior art.
- the mobility management network element needs to carry the user terminal in the setup session request message or the update bearer request message sent to the serving gateway. User parameters. Accordingly, the service gateway stores the user parameters locally when received.
- the user parameters of the user terminal are the S-TMSI and the TAI list, and may further include a security parameter, where the security parameter is used by the MME and the user terminal.
- the parameter used for message encryption or integrity protection or may also be a parameter for message encryption or integrity protection between the MME and the eNodeB, such as the key K EN . DEB .
- the user parameters of the user terminal are P-TMSI and RAI, and may further include a security parameter, which is used for message encryption or integrity protection between the SGSN and the user terminal.
- the parameter or it may be a parameter for message encryption or integrity protection between the SGSN and the RNC, such as the key KRN
- the mobility management network element can obtain multiple sets of security parameters from the HSS (Home Subscriber Server, the home subscriber register), in the above step 303 or step 305, the session request message or the update bearer request message may also be used as needed. It is also possible to include a plurality of sets of security parameters, which are not limited in this embodiment of the present invention.
- the mobility management network element may directly send the security parameters obtained from the HSS to the serving gateway, or may generate a key from a security algorithm generated by the HSS and send the key to the serving gateway.
- the mobility management network element sends a message to the serving gateway, where the message includes the latest S-TMSI/P-TMSI/TAI List. /RAI/Security parameters.
- the message may be an existing tunnel management message or a new message, which is not limited in this embodiment.
- the S-TMSI/P-TMSI/TAI List/RAI/Security Parameter Change Notification can occur in the mobility management process, the session management process, the user temporary identity redistribution process, the authentication process, or the security process.
- the user terminal of the mobility management network element Before the mobility management network element is reset, the user terminal of the mobility management network element can use the processing mechanism of the embodiment of the present invention. Or further, the mobility management network element may determine, according to the user subscription data, or the established bearer context parameter, or the operator policy, which users adopt the processing mechanism of the embodiment of the present invention, or which users' contexts are implemented by the present invention.
- the indication information for example, may be included in step 302 or step 305 of FIG.
- the indication information may be user granularity or information of the bearer granularity, and is used to indicate that the serving gateway needs to start the processing mechanism of the embodiment of the present invention for the user terminal served by the mobile management network element after the resetting of the mobility management network element, or
- the bearer context triggered service initiation of the user terminal The processing mechanism of the example.
- the processing mechanism of the embodiment of the present invention is started for a high-priority user in the network, or the processing mechanism of the embodiment of the present invention is initiated for a user who has an IMS (IP Multimedia Subsystem) call in the network.
- IMS IP Multimedia Subsystem
- the manner in which the specific mobility management network element notifies the service gateway of the indication information may be implemented by one of the following:
- the mobility management network element includes the indication information in the tunnel management message sent to the serving gateway, and indicates that the service gateway cannot be used for the user terminal or a bearer context starting mechanism of the user terminal, and one of them is not limited.
- the situation may be:
- the indication information is not included in the tunnel management message.
- the service gateway is allowed to start the processing mechanism of the embodiment of the present invention by default.
- the mobility management network element includes the indication information in the tunnel management message sent to the serving gateway, and indicates that the serving gateway initiates the processing mechanism of the embodiment of the present invention for the user terminal or a bearer context of the user terminal.
- the processing mechanism of the embodiment of the present invention is not activated.
- One of the cases is: when the tunnel management message received by the serving gateway does not include an indication to start the processing mechanism of the embodiment of the present invention, then the service The gateway cannot initiate the processing mechanism of the embodiment of the present invention for the user terminal or a certain bearer context of the user terminal.
- the mobility management network element includes the indication information in the tunnel management message sent to the serving gateway, where the indication information is used to indicate that the service gateway starts or does not start the processing mechanism of the embodiment of the present invention.
- the service request process of the user terminal can be processed normally to ensure the operation of the user service.
- the user terminal is used as the called party and the calling party as an example, and the processing method of applying the mobile management network element reset in the embodiment of the present invention to the call processing process of the user terminal after the mobility management network element is reset is further described in detail.
- FIG. 4 it is a flowchart of a method for processing a mobile management network element reset in the embodiment of the present invention when the user terminal is called.
- the radio access network may be a 3GPP (3rd Generation Partnership Project) access of GERAN/UTRAN/E-UTRAN, respectively corresponding to the BSS.
- the mobility management network element can be S4 SGSN or MME
- the service gateway can be SGW
- the data gateway can be PGW
- HSS is responsible for attribution Management and maintenance of local user subscription information.
- the process includes the following steps:
- Step 401 After the mobility management network element is reset, the serving gateway detects that the mobility management network element is reset. For example, the serving gateway obtains the mobility management network element reset by using the path detection message sent by the mobility management network element or the value of the reset counter included in the tunnel management message, if the value of the reset counter is related to the mobility management network element locally stored by the service gateway. If the value of the reset counter is different, the serving gateway learns that the mobility management network element is reset. There are two scenarios for the mobility management network element reset. The mobility management network element reset has been restarted, or the mobility management network element reset has not been restarted. The service gateway knows that the mobility management network element is reset by knowing that the mobile management network element reset has been restarted.
- the service gateway can be learned by other methods. For example, when the service gateway does not receive the response message after sending the multiple path detection message, the service gateway learns that the mobility management network element reset is not restarted.
- the service gateway learns that the mobility management network element is reset, the context of the user terminal served by the reset mobile management network element is retained according to the pre-configuration.
- the serving gateway releases the user plane information of the SGSN, the RNC or the eNodeB in the context of the user terminal, for example, the IP address and the TEID (Tunnel Endpoint IDentifier), and the remaining context of the user terminal is reserved. .
- the foregoing operation of the serving gateway may be directed only to the user terminal that starts the reset processing mechanism.
- the user terminal that starts the service processing mechanism is a user terminal that stores user parameters on the service gateway, and the user parameters include a temporary identifier S-TMSI/P-TMSI and a location identifier TAI List/RAI of the user terminal, and may further include a security parameter.
- the user terminal that initiates the service processing mechanism is a user terminal that initiates the reset processing mechanism by the mobile management network element through a reset process.
- the specific indication method has been described in detail above, and is not described herein.
- the serving gateway may also delete the bearer context that is not allowed to start the reset processing mechanism, and reserve the remaining context of the user terminal.
- the service gateway can start certain The timer is the node granularity of the reset-based mobility management network element, or is based on the granularity of the user terminal that retains the user context.
- the user terminal-based timer may be a reset mobile management network element that is notified to the serving gateway through a tunnel management message before resetting, or may be obtained by the serving gateway from other network entities, or may be locally configured on the serving gateway.
- the serving gateway deletes the relevant user context.
- Step 402 The serving gateway receives the downlink data packet sent by the data gateway, where the downlink data packet may be a signaling message or a service data packet of the user terminal, where the user terminal is a user terminal served before the mobility management network element is reset.
- Step 403 The serving gateway sends a message to the mobility management network element, where the message includes the parameter of the user terminal corresponding to the downlink data packet.
- the mobility management network element is the MME
- the parameters include IMSI, S-TMSI, TAI List, and may also include security parameters.
- the mobility management network element is an S4 SGSN
- the parameters include IMSI, P-TMSI, RAI, and may also include security parameters.
- the message is a downstream packet notification message or a new message.
- the parameter of the user terminal is used to instruct the mobility management network element to initiate an S-TMSI/P-TMSI-based paging within the range of the TAI list/RAI, and the security parameter is used in the radio access network and the mobility management network element in the subsequent process. Encryption or integrity protection of messages, or encryption or integrity protection of messages from user terminals and mobility management network elements.
- the serving gateway selects any mobile management network element serving the location area where the user terminal is located to send a message, and the selected mobility management network element may be the reset mobile management network. If the mobile management network element does not restart after reset, the monthly service gateway selects any mobile service management network element in the location area where the user terminal is located except the reset mobile management network element to send a message.
- Step 404 After receiving the message sent by the serving gateway, the mobility management network element initiates a paging to the user terminal. If the mobility management network element is the MME, the MME initiates an S-TMSI paging to the user terminal within a plurality of tracking areas identified by the TAI List. If the mobility management network element is the S4 SGSN, the S4 SGSN is in the routing area of the RAI identifier. P-TMSI paging is initiated to the user terminal.
- Step 405 After receiving the paging message, the user terminal sends a service request message to the mobility management network element.
- the service request message is sent to the mobility management network element via the radio access network.
- the radio access network learns the mobility management network element of the monthly service user terminal by using the temporary identifier of the user terminal included in the RRC (Radio Resource Control) message sent by the user terminal. For mobile management network If the radio access network does not find that the mobility management network element corresponding to the temporary identifier is unavailable, the radio access network selects any location area where the user terminal is located, except the non-step 406: Mobile Management Network The element authenticates the user terminal and obtains new security parameters from the HSS.
- RRC Radio Resource Control
- Step 407 The mobility management network element registers with the HSS, and acquires subscription data of the user terminal.
- Step 408 The mobility management network element sends a request message to the serving gateway, where the message is used to request the context of the user terminal reserved on the service gateway.
- the message includes the IMSI of the user terminal and/or the temporary identifier S-TMSI or P-TMSL of the user terminal. If the mobile management network element selected by the radio access network and the serving gateway is not the same node, the mobile management of the service request message is received.
- the network element learns the service gateway serving the user terminal through the temporary identifier of the user terminal, and sends a request message to the service gateway. If the mobility management network element selected by the radio access network and the monthly service gateway is the same node, the mobility management network element sends a request message to the serving gateway that sends the message of step 403.
- Step 409 After receiving the request message of the mobility management network element, the serving gateway sends a response message to the mobility management network element, where the response message includes the context of the user terminal.
- the context of the user terminal may or may not include the parameters of the user terminal sent in step 403.
- the request message and the response message of the foregoing steps 408 and 409 may be an existing message or a newly added message, and the message name is not limited.
- step 408 may be performed in parallel with step 404, or may be performed after step 405.
- step 406 and step 407 may be performed in parallel with other messages, or may be performed after the service request process, unless the mobile management network element must perform authentication and subscription data acquisition on the user terminal in some cases, and steps 406 and 407 are required in steps.
- the user terminal moves out of the tracking area registration area, or the user terminal enters a CSG (Closed Subscriber Group) access.
- CSG Cell Subscriber Group
- Step 410 Establish a radio bearer between the user terminal and the radio access network, and the mobility management network element establishes a user plane tunnel between the radio access network and the network side.
- the mobility management network element establishes a tunnel between the radio access network and the serving gateway, such as the serving gateway IP address and the TEID, through the information in the context of the user terminal sent by the serving gateway in step 409.
- the mobility management network element will also have security parameters such as K EN .
- the deB or KRNC is sent to the access network, and the security parameter is obtained from the serving gateway or from the HSS through the serving gateway. Get the generated security vector.
- Step 411-413 The mobility management network element sends the tunnel information of the radio access network and the tunnel information of the mobility management network element to the serving gateway by updating the bearer process, and the monthly service gateway performs bearer update.
- the serving gateway when the user terminal served by the mobility management network element is used as the called party, the serving gateway sends the parameter of the user terminal to the downlink data packet of the user terminal.
- the mobile management network element currently serving the user terminal the mobility management network element acquires the context of the user terminal from the service gateway according to the parameter, thereby establishing a transmission connection of the service data of the user terminal according to the context, and ensuring the user service. get on.
- the mobility management network element can learn the service gateway of the service user terminal by using the temporary identifier of the user: S-TMSI/P-TMSI.
- the allocation method in which the mobility management network element includes the information of the service gateway of the service user terminal in the temporary identifier is as shown in FIG. 6.
- FIG. 5 it is a flowchart of a method for processing a mobile management network element reset in the embodiment of the present invention when the user terminal is used as a calling party.
- the radio access network may be a 3GPP (3rd Generation Partnership Project) access of GERAN/UTRAN/E-UTRAN, corresponding to a BSS (Base Station Subsystem) / RNS (Radio) Network Subsystem, the eNodeB, the mobility management network element may be the S4 SGSN or the MME, the service gateway may be the SGW, the data gateway may be the PGW, and the HSS is responsible for the management and maintenance of the home subscriber subscription information.
- 3GPP 3rd Generation Partnership Project
- GERAN/UTRAN/E-UTRAN corresponding to a BSS (Base Station Subsystem) / RNS (Radio) Network Subsystem
- the eNodeB the mobility management network element may be the S4 SGSN or the MME
- the service gateway may be the SGW
- the data gateway may be the PGW
- the HSS is responsible for the management and maintenance of the home subscriber subscription information.
- the process includes the following steps:
- Step 501 The user terminal initiates a service request process, and sends a service request message to the mobility management network element, where the message includes the temporary identifier S-TMSI of the user terminal or the P-TMSL mobility management network element receives the request message, and then passes the message.
- the included S-TMSI or P-TMSI cannot find the corresponding user context.
- the service request message is sent to the mobility management network element via the radio access network.
- the radio access network learns the mobility management network element of the service user terminal by using the temporary identifier of the user terminal carried in the received radio resource management message sent by the user terminal. If the mobile management network element reset does not restart, if the radio access network finds that the mobility management network element corresponding to the temporary identifier is unavailable, the radio access network selects any location area where the user terminal is located, except the unavailable one.
- Mobile management network The mobility management network element outside the element sends a service request message.
- Step 502 The mobility management network element authenticates the user terminal, and obtains new security parameters from the HSS.
- Step 503 The mobility management network element registers with the HSS, and acquires subscription data of the user terminal.
- Step 504 The mobility management network element learns the service gateway serving the user terminal by using the temporary identifier of the user terminal, and sends a request message to the service gateway, where the message is used to request the context of the user terminal reserved on the service gateway.
- the message includes the temporary identifier of the user terminal in step 501, S-TMSI or P-TMSL.
- Step 505 After receiving the request message of the mobility management network element, the serving gateway sends a response message to the mobility management network element, where the response message includes the context of the user terminal.
- the processing on the service gateway is consistent with the processing of step 401 in the above-mentioned process shown in FIG.
- request message and the response message in steps 504 and 505 may be existing messages, or may be new messages, and the message names are not limited.
- step 502 and step 503 may be performed in parallel with other messages, or may be performed after the service request process, unless in some cases the mobility management network element must perform authentication and subscription data acquisition on the user terminal, Step 502 and step 503 are performed after step 501.
- the user terminal moves out of the tracking area registration area, or the user terminal enters CSG access or the like.
- Step 506 The user terminal establishes a radio bearer, and a user plane tunnel between the radio access network and the network side.
- the mobility management network element establishes a tunnel between the access network and the serving gateway, such as the serving gateway IP address and the TEID, through the information in the context of the user terminal sent by the serving gateway in step 505.
- the mobility management network element will also have security parameters such as K EN .
- the deB or KRNC is sent to the radio access network, and the security parameter is generated from the security gateway obtained from the serving gateway or obtained from the HSS through the serving gateway.
- Steps 507-509 The mobility management network element sends the tunnel information of the radio access network and the tunnel information of the mobility management network element to the serving gateway by using the update bearer process, and the service gateway performs bearer update.
- the mobile management network element when the user terminal served by the mobility management network element acts as the calling party, the mobile management network element currently serving the user terminal receives the service request of the user terminal, according to the When the temporary identifier of the user terminal included in the service request message cannot find the user context corresponding thereto, the context of the user terminal is obtained from the service gateway, and the root The transmission connection of the signaling message and/or the service data of the user terminal is established according to the context of the user terminal, thereby ensuring the progress of the user service.
- the mobility management network element can obtain the service gateway of the service user terminal by using the temporary identifier of the user: S-TMSI/P-TMSI, and the temporary management identifier of the user can be allocated in multiple ways when the mobile management network element works normally, and
- the information of the service gateway serving the user terminal is included in the temporary identifier, and the information of the service gateway may be an IP address of the service gateway, a fully Qualified Domain Name (FQDN), or a service gateway number. Etc., for example, below.
- FIG. 6 it is a flowchart of user temporary identification re-allocation in the embodiment of the present invention, which includes the following steps:
- Step 601 The mobility management network element initiates a user temporary identity re-allocation process, and sends a temporary identity redistribution request message to the user terminal. This process can be triggered by a variety of reasons, such as changing the service gateway of the service user terminal.
- the message may be a GUTI (Globally Unique Temporary Identity) message, and the message includes a temporary allocation of the mobility management network element to the user terminal. Identify GUTI.
- the GUTI includes S-TMSI, and the mobility management network element includes information of the service gateway serving the user terminal in the S-TMSI and is allocated to the user terminal.
- the message may be a P-TMSI Reallocation Command (P-TMSI Reallocation Command) message, where the message includes a temporary identity P-TMSI assigned by the mobility management network element to the user terminal, and mobility management.
- P-TMSI Reallocation Command P-TMSI Reallocation Command
- the network element allocates the information of the monthly service gateway of the user terminal to the user terminal in the P-TMSI.
- Step 602 The user terminal replies with a GUTI Reallocation Complete or a P-TMSI Reallocation Complete message.
- the mobility management network element can find the service gateway of the service user terminal according to the service gateway node information included in the S-TMSI or the P-TMSI.
- the mobility management network element may also allocate the temporary identifier of the user terminal by using an existing mobility management process or a session management process. For example, tracking area updates, routing area updates, or switching processes The temporary identifier of the user terminal can be assigned. In the above manner, the mobility management network element allocates the monthly service gateway node information to the user terminal in the temporary identifier.
- the embodiment of the present invention further provides a mobility management network element, as shown in FIG. 7, which is a schematic structural diagram of the mobility management network element.
- the mobility management network element includes:
- the context obtaining unit 701 is configured to obtain, by using a service gateway of the service user terminal, a context of the user terminal saved by the service gateway;
- the establishing unit 702 is configured to establish a transmission connection of the signaling message and/or the service data for the user terminal according to the context of the user terminal.
- the establishing unit 702 is specifically configured to establish a user plane tunnel between the radio access network and the serving gateway according to the context of the user terminal acquired by the context obtaining unit 701, and establish a control plane tunnel between the mobility management network element and the serving gateway. And transmitting the tunnel information of the established radio access network and the tunnel information of the mobility management network element to the serving gateway; triggering establishment of a radio bearer between the user terminal and the radio access network.
- the mobility management network element further includes:
- a first receiving unit 703 configured to receive a service request message sent by the user terminal, where the second receiving unit 704 is configured to receive a request message that is sent by the serving gateway and includes a user parameter of the user terminal;
- the context obtaining unit 701 is specifically configured to: after the first receiving unit 703 receives the service request message sent by the user terminal, according to the temporary identifier of the user terminal included in the service request message, the user context corresponding to the user terminal cannot be found, Obtaining the context of the user terminal from the serving gateway; or obtaining the context of the user terminal from the serving gateway after the second receiving unit 704 receives the request message that is sent by the serving gateway and includes the user parameter of the user terminal.
- the user parameter includes a temporary identifier of the user terminal.
- the temporary identifier of the user terminal may include information of the monthly service gateway of the user terminal.
- the context obtaining unit 701 is further configured to use the user terminal according to the user terminal.
- the temporary identity is known to serve the service gateway of the user terminal.
- the mobility management network element further includes: a user parameter notification unit and a user parameter update unit, where:
- the user parameter notification unit is configured to send the user parameter of the user terminal to the service gateway in an attach procedure or a PDP context activation process of the user terminal;
- the user parameter update unit is configured to send the latest user parameter to the mobility management process, the session management process, the user temporary identity redistribution process, the authentication process, or the security process after the user parameter changes The service gateway.
- the mobile management network element of the embodiment of the present invention after resetting and restarting, obtains the context of the user terminal saved by the service gateway from the serving gateway of the service user terminal, and according to the user terminal
- the context establishes a transmission connection of the signaling message and/or service data of the user terminal, so that the service request process can be processed normally, and the user service is guaranteed.
- the embodiment of the present invention further provides a service gateway, as shown in FIG. 8, which is a schematic structural diagram of the service gateway.
- the monthly service gateway includes:
- a saving unit 801 configured to save a context of the user terminal served by the reset mobile management network element after learning that the mobility management network element is reset;
- the receiving unit 802 is configured to receive a context request message related to the user terminal
- the sending unit 803 is configured to send, after the receiving unit 802 receives the context request message, the context of the user terminal saved by the saving unit 801 to the sending The mobility management network element of the context request message.
- the service gateway of the embodiment of the present invention saves the context of the user terminal of the reset mobile management network element; and after receiving the context request message sent by the mobility management network element, The saved user terminal's context can be sent to the mobility management network element, so that after the mobility management network element is reset, the user terminal's service request flow can be processed normally, and the user service can be guaranteed.
- the service gateway may further include:
- a release unit (not shown) is configured to release user plane information of the SGSN, RNC, or eNodeB in the context of the user terminal when the user terminal is in the connected state. In this way, resources can be further optimized to avoid excessive occupation of network resources.
- the serving gateway may perform the reset processing mechanism described above only for the user terminal that initiated the reset processing mechanism.
- FIG. 9 is another schematic structural diagram of a service gateway according to an embodiment of the present invention.
- the service gateway further includes: a determining unit 804, configured to determine that the mobility management network element is reset after the user terminal starts the reset processing mechanism, Saving the context of the user terminal in the saving unit 801
- the receiving unit 802 is further configured to receive a user parameter of the user terminal that is sent by the mobility management network element.
- the saving unit 901 is further configured to save the user parameter.
- the determining unit 804 is specifically configured to: when the saving unit saves the user parameter of the user terminal, determine that the user terminal starts the reset processing mechanism.
- the receiving unit 802 is further configured to receive the reset processing mechanism indication information sent by the mobility management network element.
- the determining unit 804 is specifically configured to perform the reset processing according to the The mechanism indication information determines that the user terminal has initiated a reset processing mechanism.
- the releasing unit is further configured to: when the indication information is the indication information of the bearer granularity, delete the bearer context in the context of the user terminal that is not allowed to start the reset processing mechanism.
- the receiving unit 802 is further configured to receive a downlink data packet of the user terminal that is sent by the data gateway, where the sending unit 803 is further configured to: after the receiving unit 802 receives the downlink data packet of the user terminal, The user parameter of the user terminal saved by the saving unit 801 is sent to the mobility management network element, so that the mobility management network element initiates paging to the user terminal according to the parameter.
- the mobility management network element and the monthly service gateway of the embodiment of the present invention can still process the service request process of the user terminal served by the reset mobility management network element after the mobility management network element is reset, and ensure the user service progress. Improve the performance of your network.
- the mobile management network element and the service gateway may refer to the description in the processing method of the mobility management network element reset in the foregoing embodiment of the present invention.
- the embodiment of the present invention further provides a processing system for resetting a mobility management network element, where the system includes: a mobility management network element and a service gateway;
- the service gateway is configured to save a context of the user terminal served by the reset mobility management network element after learning that the mobility management network element is reset, and receive a context related to the user terminal After the request message, the saved context of the user terminal is sent to the mobility management network element that sends the context request message;
- the mobility management network element is configured to obtain, from the service gateway, a context of the user terminal saved by the service gateway, and establish a transmission connection of the signaling message and/or the service data for the user terminal according to the context of the user terminal.
- the mobile mobility management network element establishes a user plane tunnel between the radio access network and the serving gateway according to the acquired context of the user terminal, and establishes a control plane tunnel between the mobility management network element and the serving gateway, and the established
- the tunnel information of the radio access network and the tunnel information of the mobility management network element are sent to the serving gateway; the radio bearer is established between the triggering user terminal and the radio access network.
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Description
移动管理网元复位的处理方法、 设备及系统
技术领域
本发明涉及通信技术领域,具体涉及一种移动管理网元复位的处理方法、 设备及系统。
背景技术
在下一代移动通信网络的逻辑架构中, 用户终端通过本地的无线接入网 络接入, 移动管理网元负责用户终端的位置管理、 连接管理、 安全认证、 网 关选择等功能, 服务网关是用户终端的本地接入网关, 负责接入技术相关的 连接管理和数据转发, 数据网关是用户终端访问外部数据网络的网关。
在现有技术中, 如果移动管理网元复位, 月良务网关检测到移动管理网元 复位后会删除移动管理网元相关的用户上下文。 在这种情况下, 对于用户终 端的主叫业务, 用户终端需要重新附着到网络才能进行业务, 导致用户终端 的网际协议 ( Internet Protocol, IP )地址的重分配和业务域的重注册。 举例来 说, 对于语音呼叫业务, 用户终端要挂机重试一次才能正常进行业务。 对于 用户终端的被叫业务, 则会有以下两种处理方案:
1. 当有下行数据包到达服务网关时, 由于无法找到相应的用户上下文而 直接丢弃该数据包, 从而会导致用户终端一段时间内无法进行被叫业务。 对 于被叫业务的主叫方, 也会在这一段时间内无法联系到被叫方。
2. 当有下行数据包到达服务网关时, 服务网关会触发复位的移动管理网 元发起国际移动用户标识 ( International Mobile Subscriber Identity, IMSI )或 者临时移动用户标识( S-Temporary Mobile Subscriber Identity, S-TMSI )或者 分组临时移动用户标识( Packet Temporary Mobile Subscriber Identity, P-TMSI ) 寻呼。 这些寻呼流程将使作为被叫的用户终端重新附着, 导致用户终端的 IP 地址的重分配和业务域的重注册。 举例来说, 对于语音呼叫业务, 用户终端 要挂机重试一次才能正常进行业务。
因此, 如果服务用户终端的移动性管理网元复位, 用户终端需要重新附 着到网络才能进行业务, 无法保证该用户终端业务的连续性。
发明内容
本发明实施例提供一种移动管理网元复位的处理方法、 设备及系统, 通
过从服务网关上获取用户终端的上下文, 进而实现保证该用户终端业务的连 续性。
为了解决以上技术问题, 本发明实施例采取的技术方案是:
一种移动管理网元复位的处理方法, 包括:
移动管理网元从服务用户终端的服务网关上获取所述服务网关保存的用 户终端的上下文;
根据所述用户终端的上下文为所述用户终端建立信令消息和 /或业务数 据的传输连接。
一种移动管理网元, 包括:
上下文获取单元, 用于从服务用户终端的服务网关上获取所述服务网关 保存的所述用户终端的上下文;
建立单元, 用于根据所述用户终端的上下文为所述用户终端建立信令消 息和 /或业务数据的传输连接。
一种服务网关, 包括:
保存单元, 用于在获知移动管理网元复位后, 保存所述复位的移动管理 网元所服务的用户终端的上下文;
接收单元, 用于接收与所述用户终端相关的上下文请求消息;
发送单元, 用于在所述接收单元接收到所述上下文请求消息后, 将所述 保存单元保存的用户终端的上下文发送给发送所述上下文请求消息的移动管 理网元。
一种移动管理网元复位的处理系统, 包括: 移动管理网元和月良务网关; 所述服务网关, 用于在获知所述移动管理网元复位后, 保存所述复位的 移动管理网元所服务的用户终端的上下文, 并在接收到与所述用户终端相关 的上下文请求消息后, 将保存的所述用户终端的上下文发送给发送所述上下 文请求消息的移动管理网元; 述用户终端的上下文, 并根据所述用户终端的上下文为所述用户终端建立信 令消息和 /或业务数据的传输连接。
本发明实施例移动管理网元复位的处理方法、 设备及系统, 移动管理网
文, 根据所述用户终端的上下文建立所述用户终端的信令消息和 /或业务数据 的传输连接, 从而可以正常处理所述用户终端的服务请求流程, 保证用户业 务的连续性。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实 施例或现有技术描述中所需要使用的附图作筒单地介绍, 显而易见地, 下面 描述中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1是下一代移动通信网络的逻辑架构示意图;
图 2是本发明实施例移动管理网元复位的处理方法的流程图; 图 4是本发明实施例移动管理网元复位的处理方法在用户终端作为被叫 时的一种流程图;
图 5是本发明实施例移动管理网元复位的处理方法在用户终端作为主叫 时的一种流程图;
图 6是本发明实施例中用户临时标识重分配的一种流程图;
图 7是本发明实施例移动性管理网元的一种结构示意图;
图 8是本发明实施例服务网关的一种结构示意图;
图 9是本发明实施例服务网关的另一种结构示意图。
具体实施方式
为了使本技术领域的人员更好地理解本发明实施例的方案, 下面结合附 图和实施方式对本发明实施例作进一步的详细说明。
在本发明实施例中, 下一代移动通信网络可以是演进的分组系统 ( Evolved Packet System, EPS ) 网络, 如图 1所示, 其中的无线接入网可以 是通用陆地无线接入网络 ( Universal Terrestrial Radio Access Network , UTRAN ) I GSM/EDGE无线接入网络( GSM EDGE Radio Access Network, GERAN ) /演进通用陆地无线接入网络 ( Evolved Universal Terrestrial Radio Access Network, E-UTRAN ),移动管理网元可以是移动性管理实体( Mobility
Management Entity, MME )或者 GPRS服务支撑节点( Serving GPRS Support Node, SGSN ), 服务网关可以是服务网关( Serving Gateway, S-GW ), 数据 网关可以是艮文数据网络网关 ( Packet Data Network Gateway , PDN-GW )。
如图 2所示, 是本发明实施例移动管理网元复位的处理方法的流程图, 包括以下步骤:
步骤 201 , 移动管理网元从服务用户终端的服务网关上获取该服务网关 保存的用户终端的上下文;
步骤 202, 根据该用户终端的上下文为该用户终端建立信令消息和 /或业 务数据的传输连接。
其中, 根据该用户终端的上下文为该用户终端建立信令消息和 /或业务数 据的传输连接包括:
移动管理网元根据获取的用户终端的上下文, 建立无线接入网和服务网 关之间的用户面隧道, 建立移动管理网元和服务网关之间的控制面隧道, 并 将建立的无线接入网的隧道信息和移动管理网元的隧道信息发送给服务网 关; 触发用户终端和无线接入网之间建立无线承载。
本发明实施例中, 该移动管理网元是复位重启后的移动管理网元, 该用 户终端是复位的移动管理网关所服务的服务终端, 该复位的移动管理网元可 以是步骤 201 中的移动管理网元, 也可以是网络中的其他移动管理网元。 也 就是说, 步骤 201 中的移动管理网元可以是复位重启后的移动管理网元, 相 应地, 该用户终端是该移动管理网元复位前月良务的用户终端; 另外, 步骤 201 中的移动管理网元也可以是正常运行的移动管理网元, 而该用户终端是其他 移动管理网元复位前服务的用户终端。
本发明实施例移动管理网元复位的处理方法可以应用于 EPS网络中, 该 移动管理网元可以是 S4 SGSN ( General Packet Radio Service Support Node, GPRS服务支撑节点)或者 MME ( Mobility Management Entity, 移动管理实 体), 该服务网关可以是 SGW ( Serving Gateway, 服务网关)。
本发明实施例移动管理网元复位的处理方法, 服务网关在本地保存复位 的移动管理网元所月良务的用户终端的上下文信息, 从而可以使移动管理网元 (可以是复位重启后的移动管理网元, 也可以是其他正常工作的移动管理网
元)从服务用户终端的服务网关上获取该服务网关保存的用户终端的上下文, 根据该用户终端的上下文建立该用户终端的信令消息和 /或业务数据的传输 连接, 从而可以正常处理该用户终端的服务请求流程, 保证用户业务的运行。
在本发明实施例中, 需要对该服务网关进行配置, 当该服务网关获知该 移动管理网元复位后, 在该服务网关上保存复位的移动管理网元所服务的用 户终端的上下文。 如果该用户终端处于连接态, 则该服务网关需要释放该上 下文中 SGSN、 RNC ( Radio Network Controller, 无线网络控制器)或 eNodeB ( Evolved Node B, 演进型节点 B )的用户面信息, 保留该用户终端的剩余上 下文。
为了进一步增强本发明方案实施的灵活性, 本发明实施例移动管理网元 复位的处理方法还可以只针对特定的一些用户终端, 在此称之为启动了复位 处理机制的用户终端, 即遵从本发明实施例的处理机制的终端; 而对于未启 动复位处理机制的用户终端, 则可以按照现有的常规处理方式进行处理。
为此, 在本发明实施例中, 还可进一步包括:
在服务网关保存用户终端的上下文之前, 该服务网关确定该用户终端启 动了复位处理机制。
具体地, 在该服务网关确定该用户终端启动了复位处理机制时, 可以按 照以下任意一种方式来确定:
( 1 )该服务网关如果保存了某个复位的移动管理网元所服务的用户终端 的用户参数, 则确定该用户终端启动了复位处理机制。 也就是说, 如果 务 网关保存了某个复位的移动管理网元所服务的用户终端的用户参数, 即默认 该用户终端启动了复位处理机制。
其中, 用户参数包括: 用户终端的临时标识和位置标识, 还可进一步包 括: 安全参数。 其中, 如果该移动管理网元为 MME, 则该用户终端的临时标 识可以是 S-TMSI , 位置标识可以是 TAI ( Tracking Area Identity , 跟踪区域标 识) 列表; 如果该移动管理网元为 S4 SGSN, 则该用户终端的临时标识可以 是 P-TMSI , 位置标识可以是 RAI ( Routeing Area Identity, 路由区域标识 )。 该安全参数用于该移动管理网元和该用户之间消息加密或完整性保护, 或者 用于该移动管理网元和 eNodeB或 RNC之间消息加密或完整性保护。
其中, 服务网关获取并保存用户终端的用户参数的过程将在后面详细说 明。
( 2 )该服务网关根据该移动管理网元发送的复位处理机制指示信息确定 该用户终端启动了复位处理机制。
需要说明的是, 如果该指示信息为承载粒度的指示信息, 则该服务网关 删除该用户终端的上下文中不允许启动该复位处理机制的承载上下文, 保留 剩余的上下文。
在本发明实施例中, 移动管理网元正常工作时通知服务网关存储该用户 终端的用户参数, 对此下面详细说明。
如图 3所示, 是本发明实施例中服务网关上存储用户参数的流程图, 该 流程对应于用户终端的附着流程或 PDP( Packet Data Protocol,分组数据协议 ) 上下文激活流程, 包括以下步骤:
步骤 301 , 用户终端向移动管理网元发送附着请求/ PDP上下文激活请求 消息;
步骤 302, 移动管理网元收到该请求消息后, 向服务该用户终端的服务 网关发送建立会话请求消息;
步骤 303 , 服务网关向移动管理网元返回建立会话响应消息;
步骤 304, 移动管理网元收到该建立会话响应消息后, 向用户终端发送 附着接受 /PDP上下文激活接受消息;
步骤 305, 移动管理网元向服务网关发送更新承载请求消息;
步骤 306, 服务网关向移动管理网元返回更新承载响应消息。
上述流程是现有技术中移动管理网元正常工作时用户终端的附着流程和 PDP上下文激活流程。
与现有技术不同的是, 在本发明实施例中, 在上述步骤 302或步骤 305 中, 移动管理网元需要在发送给服务网关的建立会话请求消息或更新承载请 求消息中携带该用户终端的用户参数。 相应地, 服务网关在收到后将该用户 参数存储在本地。
当该移动管理网元为 MME时,该用户终端的用户参数为 S-TMSI和 TAI 列表, 还可以进一步包括安全参数, 该安全参数为用于 MME和用户终端之
间消息加密或完整性保护用的参数,或者也可以是用于 MME和 eNodeB之间 消息加密或完整性保护用的参数, 例如密钥 KEN。DEB。
当该移动管理网元为 S4 SGSN时, 该用户终端的用户参数为 P-TMSI和 RAI, 还可以进一步包括安全参数, 该安全参数为用于 SGSN和用户终端之 间消息加密或完整性保护用的参数,或者也可以是用于 SGSN和 RNC之间消 息加密或完整性保护之用的参数, 例如密钥 KRN
因为移动管理网元一次可以从 HSS ( Home Subscriber Server, 家乡用户 寄存器)获取多组安全参数, 因此, 在上述步骤 303或步骤 305中, 也可以 根据需要在建立会话请求消息或更新承载请求消息中也可以包含多组安全参 数, 对此本发明实施例不做限定。
需要说明的是, 该移动管理网元可以将从 HSS获取的安全参数直接发送 给服务网关, 也可以将从 HSS获取的安全参数通过一定的安全算法生成密钥 后发送给服务网关。
另外, 当用户终端的 S-TMSI/P-TMSI/TAI List/RAI/安全参数改变后, 移 动管理网元发送消息给服务网关, 该消息中包含最新的 S-TMSI/P-TMSI/TAI List/RAI/安全参数。 该消息可以是现有的隧道管理消息, 也可以是新的消息, 本实施例对此不做限定。 该 S-TMSI/P-TMSI/TAI List/RAI/安全参数改变通知 可以发生在移动性管理流程、 会话管理流程、 用户临时标识重分配流程、 鉴 权流程、 或安全流程等流程中。
在移动管理网元复位前, 移动管理网元月良务的用户终端都可以采用本发 明实施例的处理机制。 或者进一步的, 移动管理网元可以根据用户签约数据、 或已经建立的承载上下文的参数、 或运营商策略决定哪些用户采用本发明实 施例的处理机制, 或者哪些用户的哪些 载上下文采用本发明实施例的处理 机制。 制指示信息, 例如, 在图 3的步骤 302或者步骤 305中可以包含该指示信息。 该指示信息可以是用户粒度的或者是承载粒度的信息, 用于指示移动管理网 元复位后, 服务网关需要为该移动管理网元服务的用户终端启动本发明实施 例的处理机制, 或者为该用户终端的该承载上下文触发的业务启动本发明实
施例的处理机制。 例如, 为网络内高优先级用户启动本发明实施例的处理机 制, 或者为网络内有 IMS ( IP Multimedia Subsystem, IP多媒体子系统 )呼叫 的用户启动本发明实施例的处理机制。
具体移动管理网元通知服务网关该指示信息的方式可以由以下之一来实 现:
( 1 )移动管理网元在发送给服务网关的隧道管理消息中包含该指示信 息, 指示服务网关不能为该用户终端、 或者该用户终端的某承载上下文启动 机制的情况不加以限制, 其中一种情况可以是: 隧道管理消息中没有包含该 指示信息, 在这种情况下, 默认允许良务网关启动本发明实施例的处理机制。
( 2 )移动管理网元在发送给服务网关的隧道管理消息中包含该指示信 息, 指示服务网关为该用户终端、 或者该用户终端的某承载上下文启动本发 明实施例的处理机制。 其中对于不启动本发明实施例的处理机制的情况不加 以限制, 其中一种情况是: 当服务网关收到的隧道管理消息中, 没有包含启 动本发明实施例的处理机制的指示时, 则服务网关不能为该用户终端, 或者 该用户终端的某承载上下文启动本发明实施例的处理机制。
( 3 )移动管理网元在发送给服务网关的隧道管理消息中包含该指示信 息, 其中该指示信息用于指示服务网关启动或者不启动本发明实施例的处理 机制。
当然, 还可以有其它指示方式, 对此本发明实施例不做限定。
利用本发明实施例移动管理网元复位的处理方法, 在移动管理网元复位 后, 可以正常处理用户终端的服务请求流程, 保证用户业务的运行。 下面分 别以该用户终端作为被叫和主叫为例, 进一步详细说明应用本发明实施例移 动管理网元复位的处理方法, 在移动管理网元复位后, 对用户终端的呼叫处 理过程。
如图 4所示, 是本发明实施例移动管理网元复位的处理方法在用户终端 作为被叫时的一种流程图。
其中, 无线接入网可以是 GERAN/UTRAN/E-UTRAN 的 3GPP ( 3rd Generation Partnership Project, 第三代合作伙伴计划)接入, 分别对应为 BSS
( Base Station Subsystem, 基站子系统 ) /RNS ( Radio Network Subsystem, 无 线网络子系统) I eNodeB, 移动管理网元可以是 S4 SGSN或者 MME, 服务 网关可以为 SGW, 数据网关可以为 PGW, HSS负责归属地用户签约信息的 管理和维护。
该流程包括以下步骤:
步骤 401 : 移动管理网元复位后, 服务网关检测到移动管理网元复位。 比如, 服务网关通过移动管理网元发来的路径探测消息或者隧道管理消 息中包含的复位计数器的值获知移动管理网元复位, 如果复位计数器的值与 服务网关本地存储的该移动管理网元的复位计数器的值不同, 则服务网关获 知移动管理网元复位。 移动管理网元复位有两种场景, 移动管理网元复位已 经重启, 或者移动管理网元复位没有重启, 上述服务网关获知移动管理网元 复位的方法为获知移动管理网元复位已经重启。 对于移动管理网元没有重启 的情况, 服务网关可以通过其他方法获知, 比如, 当服务网关发送多次路径 探测消息后没有收到响应消息,则服务网关获知移动管理网元复位没有重启。
服务网关获知移动管理网元复位后, 根据预先的配置, 保留该复位的移 动管理网元所服务的用户终端的上下文。 对于处于连接状态的用户终端, 服 务网关释放该用户终端上下文中的 SGSN、 RNC或 eNodeB的用户面信息, 例 如, IP地址和 TEID ( Tunnel Endpoint IDentifier, 隧道端点标识), 保留该用户 终端的剩余上下文。
进一步的, 服务网关的上述操作可以只针对启动该复位处理机制的用户 终端。 该启动该服务处理机制的用户终端为服务网关上保存了用户参数的用 户终端,该用户参数包括用户终端的临时标识 S-TMSI/P-TMSI和位置标识 TAI List/RAI,还可以包括安全参数; 或者该启动该服务处理机制的用户终端为移 动管理网元通过复位处理指示启动该复位处理机制的用户终端, 具体的指示 方法在前面已有详细说明, 在此不再赞述。
其中, 对于复位处理指示的情况, 如果移动管理网元发送的复位处理机 制指示信息为承载粒度的, 则服务网关还可以删除不允许启动该复位处理机 制的承载上下文, 保留用户终端的剩余上下文。
为了避免占用过多的网络资源, 在实际应用中, 服务网关可以启动一定
时器, 该定时器为基于复位的移动管理网元的节点粒度的, 或者为基于保留 了用户上下文的用户终端粒度的。 基于用户终端的定时器可以是复位的移动 管理网元在复位前通过隧道管理消息通知给服务网关的, 也可以是服务网关 从其他网络实体上获得的, 也可以是服务网关上本地配置的。 当定时器超时 后, 服务网关删除相关的用户上下文。
步骤 402: 服务网关收到数据网关发送的下行数据包, 该下行数据包可以 是用户终端的信令消息或者业务数据包, 该用户终端是该移动管理网元复位 前服务的用户终端。
步骤 403: 服务网关向移动管理网元发送消息, 该消息中包含收到下行数 据包对应的用户终端的参数。 如果移动管理网元为 MME, 该参数包括 IMSI, S-TMSI, TAI List, 还可以包括安全参数。 如果移动管理网元为 S4 SGSN, 该 参数包括 IMSI, P-TMSI, RAI, 还可以包括安全参数。 该消息为下行数据包 通知消息或者为新的消息。 该用户终端的参数用于指示移动管理网元在 TAI list/RAI的范围内发起基于 S-TMSI/P-TMSI的寻呼, 安全参数用于后续流程中 无线接入网和移动管理网元的消息的加密或完整性保护, 或用户终端和移动 管理网元的消息的加密或完整性保护。
本步骤中, 如果移动管理网元复位后已经重启, 服务网关选择任一服务 该用户终端所在的位置区域的移动管理网元发送消息, 该选择的移动管理网 元可以为该复位的移动管理网元; 如果移动管理网元复位后没有重启, 月良务 网关选择除该复位的移动管理网元之外的任一服务该用户终端所在的位置区 域的移动管理网元发送消息。
步骤 404: 移动管理网元收到服务网关发来的消息后, 对用户终端发起寻 呼。 如果移动管理网元为 MME, 则 MME在 TAI List标识的多个跟踪区域范围 内对用户终端发起 S-TMSI寻呼, 如果移动管理网元为 S4 SGSN, 则 S4 SGSN 在 RAI标识的路由区域范围内对用户终端发起 P-TMSI寻呼。
步骤 405:用户终端收到寻呼消息后,向移动管理网元发送服务请求消息。 该服务请求消息经过无线接入网发送给移动管理网元。 无线接入网通过收到 的用户终端发送的 RRC ( Radio Resource Control, 无线资源管理)消息中包含 的用户终端的临时标识获知月良务用户终端的移动管理网元。 对于移动管理网
元复位没有重启的情况, 如果无线接入网发现该临时标识对应的移动管理网 元不可用, 无线接入网选择任一服务该用户终端所在的位置区域的除该不可 步骤 406: 移动管理网元对用户终端进行鉴权, 从 HSS上获取新的安全参 数。
步骤 407: 移动管理网元向 HSS注册, 并且获取用户终端的签约数据。 步骤 408: 移动管理网元发送请求消息给服务网关, 该消息用于请求服务 网关上保留的用户终端的上下文。 该消息中包含用户终端的 IMSI和 /或用户终 端的临时标识 S-TMSI或 P-TMSL如果无线接入网和服务网关选择的移动管理 网元不是相同的节点, 收到服务请求消息的移动管理网元通过用户终端的临 时标识获知服务该用户终端的服务网关, 发送请求消息给该服务网关。 如果 无线接入网和月良务网关选择的移动管理网元是相同的节点, 移动管理网元向 发送步骤 403该的消息的服务网关发送请求消息。
步骤 409:服务网关收到移动管理网元的请求消息后发送响应消息给移动 管理网元, 该响应消息中包含用户终端的上下文。 该用户终端的上下文可以 包含步骤 403中发送的用户终端的参数, 也可以不包含。
需要说明的是, 在实际应用中, 上述步骤 408和 409的请求消息和响应消 息可以为现有的消息, 也可以是新增的消息, 对于消息名不予以限定。
另外, 上述步骤 408可以和步骤 404并行进行, 也可以在步骤 405后进行。 步骤 406和步骤 407可以和其他消息并行进行, 也可以在服务请求流程之后再 进行, 除非一些情况下移动管理网元必须对用户终端进行鉴权和签约数据获 取, 步骤 406和步骤 407需要在步骤 405之后进行, 例如用户终端移出了跟踪区 域注册区域, 或者用户终端进入了 CSG ( Closed Subscriber Group, 闭合签约 组)接入等。
步骤 410: 用户终端和无线接入网之间建立无线承载、 移动管理网元建立 无线接入网和网络侧之间的用户面隧道。移动管理网元通过步骤 409中服务网 关发送的用户终端的上下文中的信息建立无线接入网和服务网关之间的隧 道,如服务网关 IP地址和 TEID。移动管理网元还将安全参数,如 KEN。deB或 KRNC 发送给接入网, 该安全参数为从服务网关获取、 或者通过服务网关从 HSS上
获取的安全向量生成的。
步骤 411-413: 移动管理网元通过更新承载过程将无线接入网的隧道信息 和移动管理网元的隧道信息发送给服务网关, 该月良务网关进行承载更新。
本发明实施例移动管理网元复位的处理方法, 在移动管理网元所服务的 用户终端作为被叫时, 服务网关在收到该用户终端的下行数据包后, 将该用 户终端的参数发送给当前服务该用户终端的移动管理网元, 该移动管理网元 根据该参数从该服务网关获取该用户终端的上下文, 从而根据该上下文建立 该用户终端的业务数据的传输连接, 保证了用户业务的进行。
在本发明实施例中, 移动管理网元通过用户临时标识: S-TMSI/P-TMSI 能够获知服务用户终端的服务网关。 移动管理网元将服务用户终端的服务网 关的信息包含在该临时标识中的分配方法如图 6所示。
如图 5所示, 是本发明实施例移动管理网元复位的处理方法在用户终端 作为主叫时的一种流程图。
其中, 无线接入网可以是 GERAN/UTRAN/E-UTRAN 的 3GPP ( 3rd Generation Partnership Project, 第三代合作伙伴计划)接入, 分别对应为 BSS ( Base Station Subsystem, 基站子系统 ) /RNS ( Radio Network Subsystem, 无 线网络子系统) / eNodeB, 移动管理网元可以是 S4 SGSN或者 MME, 服务 网关可以为 SGW, 数据网关可以为 PGW, HSS负责归属地用户签约信息的 管理和维护。
该流程包括以下步骤:
步骤 501: 用户终端发起服务请求流程, 发送服务请求消息给移动管理网 元, 该消息中包含该用户终端的临时标识 S-TMSI或 P-TMSL移动管理网元收 到请求消息后,通过消息中包含的 S-TMSI或 P-TMSI无法找到相应的用户上下 文。
本步骤中, 该服务请求消息经过无线接入网发送给移动管理网元。 无线 接入网通过收到的用户终端发送的无线资源管理消息中携带的用户终端的临 时标识获知服务用户终端的移动管理网元。 对于移动管理网元复位没有重启 的情况, 如果无线接入网发现该临时标识对应的移动管理网元不可用, 无线 接入网选择任一服务该用户终端所在的位置区域的除该不可用的移动管理网
元之外的移动管理网元发送服务请求消息。
步骤 502: 移动管理网元对用户终端进行鉴权, 从 HSS上获取新的安全参 数。
步骤 503: 移动管理网元向 HSS注册, 并且获取用户终端的签约数据。 步骤 504:移动管理网元通过用户终端的临时标识获知服务该用户终端的 服务网关, 发送请求消息给该服务网关, 该消息用于请求服务网关上保留的 该用户终端的上下文。 该消息中包含步骤 501中的用户终端的临时标识 S-TMSI或 P-TMSL
步骤 505:服务网关收到移动管理网元的请求消息后发送响应消息给移动 管理网元, 响应消息中包含用户终端的上下文。
需要说明的是,如果服务网关收到步骤 504的消息后才获知移动管理网元 复位, 则服务网关上的处理与上述图 4所示流程中步骤 401的处理一致。
另外, 步骤 504和 505中的请求消息和响应消息可以是现有的消息, 也可 以是新增的消息, 对于消息名不予以限定。
另外, 需要说明的是, 步骤 502和步骤 503可以和其他消息并行进行, 也 可以在服务请求流程之后再进行, 除非一些情况下移动管理网元必须对用户 终端进行鉴权和签约数据获取, 则步骤 502和步骤 503在步骤 501之后进行, 例 如用户终端移出了跟踪区域注册区域, 或者用户终端进入了 CSG接入等。
步骤 506: 用户终端建立无线承载、 以及无线接入网和网络侧之间的用户 面隧道。移动管理网元通过步骤 505服务网关发来的用户终端的上下文中的信 息建立接入网和服务网关之间的隧道, 如服务网关 IP地址和 TEID。 移动管理 网元还将安全参数, 如 KEN。deB或 KRNC发送给无线接入网, 该安全参数为从服 务网关获取、 或者通过服务网关从 HSS上获取的安全向量生成的。
步骤 507-509:移动管理网元通过更新承载过程将无线接入网的隧道信息 和移动管理网元的隧道信息发送给服务网关, 该服务网关进行承载更新。
本发明实施例移动管理网元复位的处理方法, 在移动管理网元所服务的 用户终端作为主叫时, 当前服务该用户终端的移动管理网元在接收到该用户 终端的服务请求后, 根据该服务请求消息中包含的用户终端的临时标识无法 找到与其对应的用户上下文时, 从服务网关上获取该用户终端的上下文, 根
据该用户终端的上下文建立该用户终端的信令消息和 /或业务数据的传输连 接, 从而保证了用户业务的进行。
在本发明实施例中, 移动管理网元通过用户临时标识: S-TMSI/P-TMSI 能够获知服务用户终端的服务网关, 移动管理网元正常工作时可以通过多种 方式分配用户临时标识, 并将服务该用户终端的服务网关的信息包含在该临 时标识中, 该服务网关的信息可以为服务网关的 IP地址, 也可以为服务网关 的域名 ( Fully Qualified Domain Name, FQDN ), 或者服务网关编号等, 对此 下面举例说明。
如图 6所示, 是本发明实施例中用户临时标识重分配的一种流程图, 包 括以下步骤:
步骤 601 : 移动管理网元发起用户临时标识重分配流程, 发送临时标识 重分配请求消息给用户终端。 该流程可以由多种原因触发, 比如, 服务用户 终端的服务网关改变等。
如果移动管理网元为 MME , 则该消息可以是 GUTI ( Globally Unique Temporary Identity, 全球唯一临时标识) 重分配请求 ( GUTI Reallocation Command ) 消息, 该消息中包含移动管理网元分配给该用户终端的临时标识 GUTI。 该 GUTI中包含 S-TMSI, 移动管理网元将服务该用户终端的服务网 关的信息包含在 S-TMSI中分配给用户终端。
如果移动管理网元为 S4 SGSN, 则该消息可以是 P-TMSI 重分配请求 ( P-TMSI Reallocation Command ) 消息, 该消息中包含移动管理网元分配给 用户终端的临时标识 P-TMSI,移动管理网元将月良务该用户终端的月良务网关的 信息包含在 P-TMSI中分配给用户终端。
步骤 602:用户终端回复 GUTI重分配完成( GUTI Reallocation Complete ) 或 P-TMSI重分配完成( P-TMSI Reallocation Complete ) 消息。
通过上述流程,移动管理网元就可以根据 S-TMSI或 P-TMSI中包含的服 务网关节点信息找到服务用户终端的服务网关。
需要说明的是, 上述流程是专门用于用户临时标识重分配的。 在实际应 用中, 移动管理网元还可以利用现有的移动性管理流程或会话管理流程分配 用户终端的临时标识。 比如, 跟踪区域更新、 路由区域更新、 或切换等流程
中都可以分配用户终端的临时标识。 移动管理网元采用上述方式, 将月良务网 关节点信息包含在临时标识中分配给用户终端。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤 是可以通过程序等指令相关的硬件来完成, 所述的程序可以存储于一计算机 可读取存储介质中, 所述的存储介质, 如: ROM/RAM、 磁碟、 光盘等。
相应地, 本发明实施例还提供一种移动性管理网元, 如图 7所示, 是该 移动性管理网元的一种结构示意图。
在该实施例中, 该移动性管理网元包括:
上下文获取单元 701 , 用于从服务用户终端的服务网关上获取该服务网 关保存的该用户终端的上下文;
建立单元 702, 用于根据该用户终端的上下文为该用户终端建立信令消 息和 /或业务数据的传输连接。
其中,建立单元 702具体 用于根据上下文获取单元 701获取的用户终端 的上下文, 建立无线接入网和服务网关之间的用户面隧道, 建立移动管理网 元和服务网关之间的控制面隧道, 并将建立的无线接入网的隧道信息和移动 管理网元的隧道信息发送给服务网关; 触发用户终端和无线接入网之间建立 无线承载。
在本发明实施例中, 该移动管理网元还包括:
第一接收单元 703 , 用于接收该用户终端发送的服务请求消息; 第二接收单元 704, 用于接收该服务网关发送的包含该用户终端的用户 参数的请求消息;
该上下文获取单元 701 , 具体用于在该第一接收单元 703接收到该用户 终端发送的服务请求消息后, 根据该服务请求消息中包含的用户终端的临时 标识无法找到与其对应的用户上下文时, 从该服务网关上获取该用户终端的 上下文; 或者在该第二接收单元 704接收到该服务网关发送的包含该用户终 端的用户参数的请求消息后, 从该服务网关上获取该用户终端的上下文, 该 用户参数包含该用户终端的临时标识。
在本发明实施例中, 该用户终端的临时标识中可以包含月良务该用户终端 的月良务网关的信息。 相应地, 该上下文获取单元 701还用于根据该用户终端
的临时标识获知服务该用户终端的服务网关。
在本发明实施例中, 该移动管理网元还进一步包括: 用户参数通知单元 和用户参数更新单元, 其中:
该用户参数通知单元, 用于在该用户终端的附着流程或 PDP上下文激活 流程中将该用户终端的用户参数发送给该服务网关;
该用户参数更新单元, 用于在该用户参数发生变化后, 在移动性管理流 程、 会话管理流程、 用户临时标识重分配流程、 鉴权流程、 或安全流程等流 程中将最新的用户参数发送给该服务网关。
本发明实施例的移动管理网元, 在复位重启后, 对于其复位前服务的用 户终端, 可以从服务用户终端的服务网关上获取该服务网关保存的该用户终 端的上下文, 并根据该用户终端的上下文建立该用户终端的信令消息和 /或业 务数据的传输连接, 从而可以正常处理服务请求流程, 保证用户业务的进行。
相应地, 本发明实施例还提供一种服务网关, 如图 8所示, 是该服务网 关的一种结构示意图。
在该实施例中, 该月良务网关包括:
保存单元 801 , 用于在获知移动管理网元复位后, 保存该复位的移动管 理网元所服务的用户终端的上下文;
接收单元 802, 用于接收与该用户终端相关的上下文请求消息; 发送单元 803, 用于在该接收单元 802接收到该上下文请求消息后, 将 该保存单元 801保存的用户终端的上下文发送给发送该上下文请求消息的移 动管理网元。
本发明实施例服务网关, 在获知移动管理网元复位后, 保存该复位的移 动管理网元所月良务的用户终端的上下文; 从而在接收到该移动管理网元发送 的上下文请求消息后, 可以将保存的用户终端的上下文发送给该移动管理网 元, 从而使移动管理网元复位后, 能够正常处理用户终端的良务请求流程, 保证用户业务的进行。
在本发明实施例中, 该服务网关还可进一步包括:
释放单元(未图示), 用于在该用户终端处于连接态时, 释放该用户终端 的上下文中的 SGSN、 RNC、 或 eNodeB的用户面信息。
这样, 可以进一步优化资源, 避免对网络资源的过多占用。
在本发明服务网关的另一实施例中, 该服务网关可以只针对启动了复位 处理机制的用户终端执行上述复位处理机制。
如图 9所示, 是本发明实施例服务网关的另一种结构示意图。
与图 8所示实施例不同的是, 在该实施例中, 该服务网关还包括: 判断单元 804, 用于确定该用户终端启动了复位处理机制后, 则获知该 移动性管理网元复位, 在该保存单元 801保存该用户终端的上下文
在本发明实施例的一种具体应用中, 该接收单元 802, 还用于接收该移 动管理网元发送的该用户终端的用户参数; 相应地, 该保存单元 901 , 还用 于保存该用户参数; 该判断单元 804, 具体用于在该保存单元保存了该用户 终端的用户参数时, 确定该用户终端启动了复位处理机制。
在本发明实施例的另一种具体应用中, 该接收单元 802, 还用于接收该 移动管理网元发送的复位处理机制指示信息; 相应地, 该判断单元 804, 具 体用于根据该复位处理机制指示信息确定该用户终端启动了复位处理机制。 在这种情况下, 该释放单元还用于在该指示信息为承载粒度的指示信息时, 删除该用户终端的上下文中不允许启动该复位处理机制的承载上下文。
在该实施例中, 该接收单元 802, 还用于接收数据网关发送的该用户终 端的下行数据包; 该发送单元 803 , 还用于在该接收单元 802接收到该用户 终端的下行数据包后, 将该保存单元 801保存的该用户终端的用户参数发送 给移动管理网元, 以使移动管理网元根据该参数对该用户终端发起寻呼。
应用本发明实施例的移动管理网元和月良务网关可以在移动管理网元复位 后, 仍然可以正常处理复位的移动管理网元所服务的用户终端的服务请求流 程, 保证用户业务的进行, 提高网络的性能。 该移动管理网元和服务网关在 实际应用中对业务的处理流程可参照前面本发明实施例移动管理网元复位的 处理方法中的描述。
相应地, 本发明实施例还提供一种移动管理网元复位的处理系统, 该系 统, 包括: 移动管理网元和服务网关;
该服务网关, 用于在获知该移动管理网元复位后, 保存该复位的移动管 理网元所服务的用户终端的上下文, 并在接收到与该用户终端相关的上下文
请求消息后, 将保存的该用户终端的上下文发送给发送该上下文请求消息的 移动管理网元;
该移动管理网元, 用于从该服务网关上获取该服务网关保存的该用户终 端的上下文, 并根据该用户终端的上下文为该用户终端建立信令消息和 /或业 务数据的传输连接。
其中, 该移移动管理网元根据获取的用户终端的上下文, 建立无线接入 网和服务网关之间的用户面隧道, 建立移动管理网元和服务网关之间的控制 面隧道, 并将建立的无线接入网的隧道信息和移动管理网元的隧道信息发送 给服务网关; 触发用户终端和无线接入网之间建立无线承载。
该移动管理网元和月良务网关的具体结构及对业务的处理流程可参照前面 的描述, 在此不再赘述。
需要说明的是, 本说明书中的各个实施例均采用递进的方式描述, 各个 实施例之间相同相似的部分互相参见即可, 每个实施例重点说明的都是与其 他实施例的不同之处。 尤其, 对于设备及系统实施例而言, 由于其基本相似 于方法实施例, 所以描述得比较筒单, 相关之处参见方法实施例的部分说明 即可。 以上所描述的设备及系统实施例仅仅是示意性的, 其中作为分离部件 是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个 网络单元上。 可以根据实际的需要选择其中的部分或者全部模块来实现本实 施例方案的目的。 本领域普通技术人员在不付出创造性劳动的情况下, 即可 以理解并实施。
以上所述仅为本发明的较佳实施例而已, 并非用于限定本发明的保护范 围。 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 包含在本发明的保护范围内。
Claims
1、 一种移动管理网元复位的处理方法, 其特征在于, 包括:
移动管理网元从服务用户终端的服务网关上获取所述服务网关保存的所 述用户终端的上下文;
根据所述用户终端的上下文为所述用户终端建立信令消息和 /或业务数 据的传输连接。
2、 如权利要求 1所述的方法, 其特征在于, 所述方法还包括: 所述服务网关获知所述移动管理网元复位后, 保存所述移动管理网服务 的用户终端的上下文。
3、 如权利要求 2所述的方法, 其特征在于, 所述方法还包括: 如果所述用户终端处于连接态, 则所述服务网关释放所述用户终端的上 下文中的 GPRS服务支撑节点 SGSN、 无线网络控制器 RNC或演进型节点 B eNodeB的用户面信息。
4、 如权利要求 2所述的方法, 其特征在于, 所述服务网关获知所述移动 管理网元复位后, 保存与所述移动管理网服务的用户终端的上下文, 包括: 所述服务网关确定所述用户终端启动了复位处理机制, 则所述服务网关 获知所述移动管理网元复位后, 保存所述用户终端的上下文。
5、 如权利要求 4所述的方法, 其特征在于, 所述服务网关确定所述用户 终端启动了复位处理机制包括:
所述服务网关如果保存了所述用户终端的用户参数, 则确定所述用户终 端启动了复位处理机制; 或者
所述服务网关根据所述移动管理网元发送的复位处理机制指示信息确定 所述用户终端启动了复位处理机制。
6、 如权利要求 5所述的方法, 其特征在于, 所述方法还包括: 如果所述指示信息为承载粒度的指示信息, 则所述服务网关删除所述用 户终端的上下文中不允许启动该复位处理机制的承载上下文。
7、 如权利要求 1至 5任一所述的方法, 其特征在于, 所述方法还包括: 所述服务网关收到数据网关发送的所述用户终端的下行数据包后, 将保 存的所述用户终端的用户参数发送给移动管理网元, 以使所述移动管理网元 根据所述用户参数对所述用户终端发起寻呼。
8、 如权利要求 1至 5任一所述的方法, 其特征在于, 所述移动管理网元 从服务网关上获取用户终端的上下文包括:
所述移动管理网元接收到所述用户终端发送的服务请求消息后, 根据所 述服务请求消息中包含的用户终端的临时标识无法找到与其对应的用户上下 文时, 从所述服务网关上获取所述用户终端的上下文; 或者
所述移动管理网元接收到所述服务网关发送的包含所述用户终端的用户 参数的请求消息后, 从所述服务网关上获取所述用户终端的上下文。
9、 如权利要求 8所述的方法, 其特征在于, 所述用户参数包括: 所述用 户终端的临时标识和位置标识。
10、 如权利要求 9所述的方法, 其特征在于, 所述用户参数还包括: 安 全参数, 所述安全参数用于所述移动管理网元和所述用户之间消息加密或完 整性保护, 或者
所述安全参数用于所述移动管理网元和 eNodeB, 或者所述移动性管理 网元和 RNC之间消息加密或完整性保护。
11、 如权利要求 8所述的方法, 其特征在于, 所述方法还包括: 所述移动管理网元在所述用户终端的附着流程或 PDP上下文激活流程中 将所述用户终端的用户参数发送给所述服务网关;
在所述用户参数发生变化后, 所述移动管理网元在移动性管理流程、 会 话管理流程、 用户临时标识重分配流程、 鉴权流程、 或安全流程流程中将所 述变化后的用户参数发送给所述服务网关。
12、 一种移动管理网元, 其特征在于, 包括:
上下文获取单元, 用于从服务用户终端的服务网关上获取所述服务网关 保存的所述用户终端的上下文;
建立单元, 用于根据所述用户终端的上下文为所述用户终端建立信令消 息和 /或业务数据的传输连接。
13、 如权利要求 12所述的移动管理网元, 其特征在于, 所述移动管理网 元还包括:
第一接收单元, 用于接收所述用户终端发送的服务请求消息; 第二接收单元, 用于接收所述服务网关发送的包含所述用户终端的用户 参数的请求消息;
所述上下文获取单元, 具体用于在所述第一接收单元接收到所述用户终 端发送的服务请求消息后, 根据所述服务请求消息中包含的用户终端的临时 标识无法找到与其对应的用户上下文时, 从所述服务网关上获取所述用户终 端的上下文; 或者在所述第二接收单元接收到所述服务网关发送的包含所述 用户终端的用户参数的请求消息后, 从所述服务网关上获取所述用户终端的 上下文, 所述用户参数包含所述用户终端的临时标识。
14、 如权利要求 12所述的移动管理网元, 其特征在于, 所述移动管理网 元还包括:
用户参数通知单元, 用于在所述用户终端的附着流程或 PDP上下文激活 流程中将所述用户终端的用户参数发送给所述服务网关;
用户参数更新单元, 用于在所述用户参数发生变化后, 在移动性管理流 程、 会话管理流程、 用户临时标识重分配流程、 鉴权流程、 或安全流程中将 最新的用户参数发送给所述服务网关。
15、 一种服务网关, 其特征在于, 包括:
保存单元, 用于在获知移动管理网元复位后, 保存所述复位的移动管理 网元所服务的用户终端的上下文;
接收单元, 用于接收与所述用户终端相关的上下文请求消息;
发送单元, 用于在所述接收单元接收到所述上下文请求消息后, 将所述 保存单元保存的用户终端的上下文发送给发送所述上下文请求消息的移动管 理网元。
16、如权利要求 15所述的服务网关,其特征在于,所述服务网关还包括: 释放单元, 用于在所述用户终端处于连接态时, 释放所述用户终端的上 下文中的 SGSN、 RNC、 或 eNodeB的用户面信息。
17、 如权利要求 15或 16所述的服务网关, 其特征在于, 所述保存单元, 具体用于确定所述用户终端为启动了复位处理机制, 则获知所述移动管理网 元复位后, 保存所述用户终端的上下文。
18、 如权利要求 17所述的服务网关, 其特征在于, 所述接收单元, 还用于接收所述移动管理网元发送的所述用户终端的用 户参数;
所述保存单元, 还用于保存所述用户参数;
所述判断单元, 具体用于在所述保存单元保存了所述用户终端的用户参 数时, 确定所述用户终端启动了复位处理机制。
19、 如权利要求 17所述的服务网关, 其特征在于,
所述接收单元, 还用于接收所述移动管理网元发送的复位处理机制指示 信息;
所述判断单元, 具体用于根据所述复位处理机制指示信息确定所述用户 终端启动了复位处理机制。
20、 如权利要求 19所述的服务网关, 其特征在于,
所述释放单元, 还用于在所述指示信息为承载粒度的指示信息时, 删除 所述用户终端的上下文中不允许启动该复位处理机制的承载上下文。
21、 如权利要求 18所述的服务网关, 其特征在于,
所述接收单元,还用于接收数据网关发送的所述用户终端的下行数据包; 所述发送单元, 还用于在所述接收单元接收到所述用户终端的下行数据 包后,将所述保存单元保存的所述用户终端的用户参数发送给移动管理网元, 以使移动管理网元根据所述参数对所述用户终端发起寻呼。
22、 一种移动管理网元复位的处理系统, 其特征在于, 包括: 移动管理 网元和月良务网关;
所述服务网关, 用于在获知所述移动管理网元复位后, 保存所述复位的 移动管理网元所服务的用户终端的上下文, 并在接收到与所述用户终端相关 的上下文请求消息后, 将保存的所述用户终端的上下文发送给发送所述上下 文请求消息的移动管理网元; 述用户终端的上下文, 并根据所述用户终端的上下文为所述用户终端建立信 令消息和 /或业务数据的传输连接。
23、 如权利要求 22所述的系统, 其特征在于,
所述移动管理网元为权利要求 11至 14任一项所述的移动管理网元; 所述服务网关为权利要求 15至 21任一项所述的服务网关。
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