WO2009152760A1 - 网络间切换、位置区更新、建立isr的方法和系统、设备 - Google Patents

网络间切换、位置区更新、建立isr的方法和系统、设备 Download PDF

Info

Publication number
WO2009152760A1
WO2009152760A1 PCT/CN2009/072299 CN2009072299W WO2009152760A1 WO 2009152760 A1 WO2009152760 A1 WO 2009152760A1 CN 2009072299 W CN2009072299 W CN 2009072299W WO 2009152760 A1 WO2009152760 A1 WO 2009152760A1
Authority
WO
WIPO (PCT)
Prior art keywords
mobility management
network element
management network
isr
target
Prior art date
Application number
PCT/CN2009/072299
Other languages
English (en)
French (fr)
Inventor
胡伟华
张艳平
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2009152760A1 publication Critical patent/WO2009152760A1/zh

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0066Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, system, and device for inter-network handover, location area update, and establishment of an ISR. Background technique
  • the core network of the wireless evolved network mainly includes an MME (Mobility Management Entity), a SGW (Serving Gateway, service). Gateway, PGW (PDN Gateway, Packet Data Network Gateway), three logical functions, where the MME is a mobility management entity responsible for NAS (Non-Access- Stratum) signaling and NAS signaling. Encryption and roaming, tracking and other functions, assigning user temporary identity, security functions, etc.
  • the SGW is responsible for local mobility anchors and mobility errors within the 3GPP (3rd Generation Partnership Project) system and legal Monitor related information; PGW is responsible for policy enforcement and billing and lawful interception related functions.
  • the mobile user changes the access system each time, such as from GERAN (GSM (GPRS) / EDGE Radio Access Network, wireless access network) / UTRAN (Universal Mobile) Telecommunications System Territorial Radio Access Network, Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network) to EUTRAN (Evolved UMTS Territorial Radio Access Network), or from EUTRAN to GERAN/UTRAN Location area update process.
  • GSM GPRS
  • EDGE Radio Access Network wireless access network
  • UTRAN Universal Mobile Telecommunications System
  • EUTRAN Evolved UMTS Territorial Radio Access Network
  • the terminal UE When the terminal UE performs inter-network handover, it finds that it is in a new location area (TA or RA allocated by the target network), that is, not in the TA/RA list allocated by the source mobility management network element, and the terminal UE moves to the target mobility management network element.
  • the tracking area/routing area update request TA/RA Update Request is initiated to initiate the tracking/routing area update process.
  • the tracking/routing area update process is not initiated, for example,
  • the SGSN establishes an ISR with the MME1, and the terminal UE saves the SGSN to allocate the P-TMSI and the RAI, and the GUTI TAlist (TAl, TA2, TA3, TA4) allocated by the MME1, and the terminal UE that is being transmitted is moved from the RA1 to the RA1.
  • TA1 that is, the RAT handover occurs
  • the source network element (RNC, Radio Network Controller, radio access controller) decides to switch the UE from the UTRAN to the E-UTRAN according to the measurement report sent by the UE, and the target network element is the eNodeB1 (base station).
  • the source mobility management network element selects the target mobility management network element (MME1 or MME2) according to the target network element (eNodeB1) identifier. If the SGSN selects the MME2, and if the MME2 selects a different Serving GW, after the handover is completed, the SGSN sends a bearer release message to the source Serving-GW, and the source Serving GW notifies the MME1 to delete the bearer context related to the saved terminal UE. After the handover procedure is completed, since the TA1 is in the TA List allocated before the MME1, the UE does not initiate the TAU procedure.
  • MME1 target mobility management network element
  • eNodeB1 target network element
  • MME1 has deleted the UE related information, that is, the UE is actually attached to the SGSN and the MME2, but the saved temporary identifier is allocated by the SGSN and the MME1, and the MME1 has deleted the UE related information;
  • the registered address is also SGSN and MME1.
  • the UE initiates a service request Servive Request procedure to the MME1, where the terminal UE derives the GUMMEI (the global identifier of the MME) from the saved GUTI (the MME1 allocated) to the eNodeB1, and the NodeB1 selects the MME1 according to the GUMMEI and the Service Request.
  • the message is delivered to MME1.
  • the MME1 After the MME1 receives the service request Servive Request, the MME1 has deleted the related information of the terminal UE, and cannot determine the context of the terminal UE according to the GUTI, so the service rejection Service Reject is sent to the UE.
  • the flow of the network handover provided by the prior art, when the inter-RAT handover is performed for the UE that establishes the ISR activation, the target UE is still in the TA LIST acquired before the RAT handover, and the target is The network element eNodeB selects an MME that does not establish an ISR association with the terminal UE. Therefore, the terminal UE does not initiate a location area update, and thus cannot acquire a new temporary identifier allocated by the new MME, and cannot register the new MME in the HSS. As a result, business cannot be performed. Summary of the invention
  • the embodiment of the present invention provides an inter-network handover, a location area update, and an ISR establishment method. System, equipment. The technical solution as follows:
  • a method for updating a location area during handover between networks is provided.
  • the method includes:
  • the terminal device determines that the initiating condition of the location area update process is met, and initiates a location area update process to the mobility management network element in the target network, where the initiating condition of the location area update process includes: the access technology of the terminal occurs change.
  • a method for inter-network handover includes:
  • the source network mobility management network element obtains a mobility management network element list letter that establishes an ISR with itself, and a mobility management network element list information of the target network;
  • a forward handover request is sent to the selected target mobility management network element to complete handover of the terminal from the source network to the target network.
  • a method for establishing an ISR includes: when a UE moves from a source network to a target network;
  • the target network mobility management network element sends a context request to the source network mobility management network element and the radio access technology RAT mobility management network element to the source network;
  • a method for establishing an ISR includes: when a UE moves from a source network to a target network;
  • the service gateway obtains a message sent by the target network mobility management network element, where the message carries the ISR indication information; when the ISR indication information is the capability of the target network mobility management network element to support the ISR, the service gateway returns a response message;
  • the service gateway determines that the ISR can be activated, and returns a message to the target network mobility management network element, where the returned message carries information. Notifying the target network mobility management network element that the ISR is activated.
  • a terminal device comprising:
  • a determining module configured to determine whether an initiating condition of the location area update process is met; where the initiating condition of the location area update process includes: the access technology of the terminal changes;
  • the processing module is configured to initiate a location area update process to the mobility management network element in the target network when the determination result of the determining module is yes.
  • a system for inter-network handover includes: a source network mobility management network element, a target mobility management network element; and a target mobility management network element and the source network mobility management network
  • the source establishes the ISR and is in the mobility management network element list of the target network; the source network mobility management network element is used to obtain the mobility management network element list information of establishing the ISR with itself and the mobility management network of the target network.
  • Meta-list information a mobility management network element list information based on the establishment of the ISR and a mobility management network element list letter of the target network And selecting, in the target network, a mobility management network element that establishes an ISR with the source network mobility management network element as a target mobility management network element; and is further configured to send a handover request to the selected target mobility management network element. , completing the switching of the terminal from the source network to the target network;
  • the target mobility management network element is configured to receive a handover request sent by the source network mobility management network element, and complete handover of the terminal from the source network to the target network.
  • a mobility management network element where the network element includes:
  • An obtaining module configured to acquire mobility management network element list information that establishes an ISR with itself, and mobility management network element list information of the target network;
  • a selection module configured to establish, according to the mobility management network element list information of the ISR acquired by the acquiring module, and the mobility management network element list information of the target network, and select the source network mobility management network element in the target network.
  • the mobility management network element of the ISR serves as the target mobility management network element;
  • a switching module configured to send a handover request to the target mobility management network element selected by the selection module, to complete handover of the terminal from the source network to the target network.
  • a system for establishing an ISR includes: a target network mobility management network element, a source network and a radio access technology RAT mobile mobility management network element in the source network and the The target network mobility management network element is the radio access technology RAT mobility management network element, and the source network different RAT mobility management network element is the source network mobility management network element and the RAT mobility management network element in the source network;
  • the target network mobility management network element is configured to send a context request to the target network mobility management network element and the RAT mobility management network element to the source network; and is further configured to receive the source network and the RAT mobile mobility management network. a context response returned by the element, carried in the context response Information about the inter-RAT mobility management network element in the source network that establishes the ISR with the source network and the RAT mobile mobility management network element; and is further configured to use the information of the different RAT mobility management network element in the obtained source network, The ISR is established in the hetero-RAT mobility management network element in the source network;
  • the source network and the RAT mobile mobility management network element are configured to: after receiving the context request sent by the target network mobility management network element, return a context response;
  • the source network hetero-RAT mobility management network element is configured to establish an ISR with the target network mobility management network element.
  • a mobility management network element where the network element includes:
  • a sending and receiving module configured to send a context request to the mobility management network element and the radio access type RAT mobility management network element to the source network; and further, to receive the source network and the RAT mobile mobility management network element returned a context response, where the context response carries information of a different RAT mobility management network element in a source network that establishes an ISR with the source network and the RAT mobile mobility management network element;
  • a first establishing module configured to establish an ISR with the RAT mobility management network element in the source network according to the information of the RAT mobility management network element in the source network acquired by the sending and receiving module.
  • a system for establishing an ISR When the UE moves from a source network to a target network, the system includes: a target network mobility management network element and a service gateway;
  • the target network mobility management network element is configured to send a message to the serving gateway, where the message carries an ISR indication information, where the ISR indication information is an ability of the target network mobility management network element to support an ISR, or The target network mobility management network element activates the ISR request;
  • the service gateway is configured to acquire a message sent by the target network mobility management network element, where The message carries the ISR indication information; when the ISR indication information is the capability of the target network mobility management network element to support the ISR, the response message is returned; when the ISR indication information is the target network mobility management network element, the ISR is activated.
  • the request is made, it is judged that the ISR can be activated, and a message is returned to the target network mobility management network element, and the returned message carries information to notify the target network mobility management network element that the ISR is activated.
  • a mobility management network element configured to send a message to the serving gateway, where the message carries ISR indication information, where the ISR indication information includes a target
  • the network mobility management network element supports the capability of the ISR, or the target network mobility management network element activates one of the request information of the ISR;
  • the receiving module is configured to receive the message returned by the serving gateway.
  • the ISR indication information is a request for the target network mobility management network element to activate the ISR
  • the returned message carries information indicating that the target mobility management network element activates the ISR.
  • a service gateway is provided, and the service gateway includes:
  • a receiving module configured to receive a message sent by a target network mobility management network element, where the message carries an ISR indication information
  • a processing module configured to: when the ISR indication information carried in the message received by the receiving module is the capability of the target network mobility management network element to support the ISR, return a response message; when the ISR indication information is the target network mobility management network When the ISR request is activated, it is determined that the ISR can be activated, and the message is returned to the target network mobility management network element, and the returned message carries information to notify the target network mobility management network element that the ISR is activated.
  • the terminal performs inter-network handover, when the target network
  • the terminal determines that its own access technology changes, and initiates a location area update process to the mobility management network element in the target network, thereby ensuring that the terminal performs The location area update process obtains the newly assigned temporary identifier; or, by selecting the target mobility management network element that is associated with the source mobility management network element, thereby effectively ensuring that the temporary identifier owned by the terminal is a valid identifier, ensuring The subsequent terminal UE performs normal services.
  • FIG. 1 is a schematic diagram of a wireless evolution network architecture provided by the prior art
  • FIG. 2 is a schematic diagram of performing inter-RAT handover by a terminal provided by the prior art
  • FIG. 3 is a schematic diagram of a service request process of a terminal provided by the prior art
  • FIG. 5 is a schematic diagram of a service request process for providing a terminal according to Embodiment 1 of the present invention.
  • FIG. 6 is a schematic diagram of information exchange between networks according to Embodiment 1 of the present invention
  • FIG. 7 is a flowchart of a method for switching between networks according to Embodiment 2 of the present invention.
  • FIG. 8 is a schematic diagram of information exchange between networks according to Embodiment 2 of the present invention
  • FIG. 9 is a flowchart of a method for switching between networks according to Embodiment 3 of the present invention.
  • FIG. 10 is a schematic diagram of information exchange of inter-network handover according to Embodiment 3 of the present invention
  • FIG. 11 is a schematic diagram of interaction of establishing an ISR according to Embodiment 4 of the present invention.
  • FIG. 12 is a schematic diagram of interaction of establishing an ISR according to Embodiment 5 of the present invention.
  • FIG. 13 is a schematic diagram of a terminal device according to Embodiment 6 of the present invention.
  • FIG. 14 is a schematic diagram of a system for switching between networks according to Embodiment 7 of the present invention.
  • FIG. 15 is a schematic diagram of a mobility management network element according to Embodiment 8 of the present invention.
  • FIG. 16 is a schematic diagram of a system for establishing an ISR according to Embodiment 9 of the present invention;
  • FIG. 17 is a schematic diagram of a mobility management network element according to Embodiment 10 of the present invention;
  • FIG. 18 is a schematic diagram of a system for establishing an ISR according to Embodiment 11 of the present invention.
  • FIG. 19 is a schematic diagram of a mobility management network element according to Embodiment 12 of the present invention.
  • FIG. 20 is a schematic diagram of a service gateway according to Embodiment 13 of the present invention. detailed description
  • the method of the present invention provides a method for updating a location area in an inter-network handover process.
  • the method is as follows: The terminal device determines that the initiation condition of the location area update procedure is met, and initiates a location to the mobility management network element in the target network.
  • the area update process, wherein the initiating conditions of the location area update process include: The access technology of the terminal changes.
  • the embodiment of the present invention further provides a method for switching between networks, and the content of the method is as follows:
  • the source network mobility management network element obtains the mobility management network element list information of the ISR established by itself and the mobility management network element list of the target network.
  • the management network element sends a handover request to the selected target mobility management network element to complete the handover of the terminal from the source network to the target network. See Method 1 for a method and Embodiments 2 and 3 for the second method: Example 1
  • an embodiment of the present invention provides a method for updating a location area in an inter-network handover process, and a method for inter-network handover, where the terminal UE detects that its own access technology changes and triggers a TAU process.
  • the method is as follows:
  • Step 101 The source network and the target network establish a terminal UE to perform preparation for handover, and the target network acquires related information of the terminal UE, such as a mobility management context and user plane bearer context information, and the like.
  • related information of the terminal UE such as a mobility management context and user plane bearer context information, and the like.
  • the source network access network element determines to perform the handover from the source network to the target network, and sends a handover request Handover Request to the source network mobility management network element, where the handover request carries the target network access network element Identification
  • the source network mobility management network element obtains the target network mobility management network element according to the identifier of the target network access network element, and sends a forward handover request Forward Relocation Request to the obtained target network mobility management network element.
  • the handover request carries the mobility management context and user plane bearer context information of the terminal UE.
  • the target network mobility management network element determines whether the current Source Serving GW can continue to work on the terminal UE. If not, it reselects a new Serving GW (Target Serving GW).
  • the target network mobility management network element controls the target network access network element to allocate corresponding bearer resources and data forwarding resources to the handover users. Respond to the Forward Relocation Response.
  • the Serving GW interacts to build indirect data forwarding channels. Specifically: 6a.
  • the source network mobility management network element sends a create bearer request to the Source Serving GW.
  • the Source Serving GW sends a create bearer response to the source network mobility management network element. 7.
  • the source network mobility management network element sends a handover command to the source network access network element.
  • Handover Command used to command the source network to start switching.
  • the source network access network element sends a handover command Handover Command to the terminal UE, to notify the UE to start the handover.
  • the source network access network element begins to forward data to the target network access network element.
  • the terminal UE appears in the target network, that is, the target network access network element captures the successful access of the terminal UE.
  • the target network access network element confirms that the terminal UE accesses, and sends a handover notification Handover Notify to the mobility management network element of the target network.
  • the target network mobility management network element After receiving the handover notification Handover Notify, the target network mobility management network element sends forward handover complete Forward Relocation Complete to the source network mobility management network element. Returns the forward handover completion confirmation message Forward Relocation ACK:.
  • the target network mobility management network element sends an update bearer request to the Target Serving GW to update the user information.
  • the Target Serving GW may initiate an update bearer process, and update the bearer information on the PDN GW, such as the network type of the user. Specifically:
  • the Target Serving GW sends an update bearer request to the PDN GW.
  • the PDN GW sends an update bearer acknowledgement to the Target Serving GW.
  • Target Serving GW returns the update bearer response Update Bearer Response to Target network mobility management network element.
  • Step 102 The terminal UE determines whether its own access technology has changed. If yes, go to step 103; otherwise, go to step 104.
  • the terminal UE can determine whether the change of the radio access technology is found according to the received wireless signal. Further, the terminal UE may also learn that the access technology of the terminal is changed in another manner, for example, the network side actively sends a notification to the terminal UE, where the notification carries information that the access of the terminal UE changes, and correspondingly, the terminal UE According to the obtained notification, the access technology of the user is changed. In this embodiment, the terminal UE can determine whether the access technology changes according to the received wireless signal.
  • Step 103 The terminal UE initiates a tracking/routing area update process (TAU/RAU, TA/RA Update Request) to the target mobility management network element, completes registration of the target mobility management network element to the HSS, and acquires target mobility management.
  • TAU/RAU tracking/routing area update process
  • TA/RA Update Request TA/RA Update Request
  • the terminal UE initiates a tracking/routing area update procedure (TAU/RAU, TA/RA Update Request) to the target mobility management network element.
  • TAU/RAU tracking/routing area update procedure
  • the target network mobility management network element may initiate a security process according to the configuration.
  • the target network mobility management network element initiates an update location request to the HSS and registers itself with the HSS.
  • the HSS inserts subscription data into the target network mobility management network element.
  • the target network mobility management network element verifies whether the UE can access the current location according to the subscription data, and sends an insertion subscription data confirmation message to the HSS according to the result. If the UE can Access, the target network mobility management network element constructs the UE context.
  • the HSS sends a location update confirmation message to the target network mobility management network element.
  • the target network mobility management network element sends a tracking/routing area update accept message to the UE, so that the UE accepts the tracking/routing area update request.
  • the UE sends a tracking/routing area update completion message to the target network mobility management network element, and completes the tracking/routing area update.
  • Step 104 The terminal UE does not initiate a tracking/routing area update process, and the process ends.
  • a schematic diagram of the inter-RAT handover performed by the terminal UE provided in FIG. 3 is taken as an example.
  • RA1 belongs to the RNC side network, The eNodeB side network
  • the terminal UE senses the change of its own access technology, initiates a TAU procedure to the target network mobility management network element (ie, the MME2 selected by the target network element), registers the MME2 in the HSS, and acquires the temporary allocation allocated by the MME2.
  • Identify GUTI the terminal UE acquires the temporary identifier GUTI allocated by the MME2, referring to FIG.
  • the terminal UE when the terminal UE initiates the service request, the terminal UE derives the GUMMEI (identity of the MME2) from the acquired new identifier GUTI to the eNodeBl.
  • the eNodeB1 selects the MM2 according to the GUMMEI, and forwards the service request to the MME2. Since the related information of the UE has been obtained in the MM2, the response service is accepted, and the terminal UE can perform the normal service.
  • the embodiment of the present invention provides a method for updating a location area in an inter-network handover process.
  • FIG. 6 a schematic diagram of information interaction of the method is provided.
  • the terminal UE after ISR activation is executed.
  • Inter-RAT handover is accompanied by the flow of TAU/RAU.
  • the TAU/RAU process is initiated actively, which ensures the target mobility tube.
  • the physical network element registers with the HSS and obtains the subscription data, and ensures that the terminal UE acquires the target network mobility management network element to allocate a new temporary identifier (P-TMSI/GUTI) to the UE, thereby effectively ensuring that the subsequent terminal UE performs normal.
  • P-TMSI/GUTI new temporary identifier
  • an embodiment of the present invention provides a method for switching between networks, and the method is as follows:
  • Step 201 After obtaining the handover request sent by the source network element, the source network mobility management network element sends a message to the source service gateway, where the message is used to obtain a mobility management network that establishes an ISR with the source network mobility management network element.
  • Meta information such as the address/TEID (Tunnel Endpoint Identity), is used as an example. The details are as follows:
  • the source network access network element decides to trigger the handover.
  • the source network access network element sends a handover request message to the source network mobility management network element, requesting to start the handover.
  • the source network mobility management network element After the source network mobility management network element receives the handover request message, if the current network activates the ISR, the source network mobility management network element sends a context request message to the Serving GW, and obtains an ISR with the source network mobility management network element. Mobility management network element address.
  • the source network mobility management network element activates the ISR as an example, where the mobility management network element address information is used by the source network mobility management network element to select a mobility management network element with which the ISR is established.
  • the target mobility management network element determines whether to activate and interact with the ISR based on the address passed by the source side.
  • Step 202 The source service gateway returns a message to the source network mobility management network element, where the source network mobility management network element carries the mobility management network element address information of the ISR. which is:
  • the Serving GW sends a context response message to the source network.
  • the source and network mobility management network elements are set up to establish the mobility management network element address of the ISR.
  • the source network mobility management network element SGSN and the source network mobility management network element MME1 establish an ISR
  • the source SGSN serves the source after receiving the handover request of the source network access network network element RNC.
  • the gateway Serving GW sends a message to obtain information of the MME 1, including information such as the IP address of the MME1.
  • Step 203 The source network mobility management network element acquires the mobility management network element information of the target network according to the target network element identifier sent by the source network element.
  • Step 204 The source network mobility management network element determines whether the ISR-enabled mobility management network element obtained in step 202 is in the mobility management network element list of the target network acquired in step 203, and if yes, step 205 is performed; Otherwise, step 206 is performed.
  • Step 205 Select the mobility management network element that has established the ISR as the target mobility management network element, and then perform step 207.
  • Step 206 Select a target mobility management network element from the obtained mobility management network element list of the target network, and then perform step 207.
  • Step 207 The source network mobility management network element sends a forward handover request to the selected target mobility management network element, where the forward handover request carries related information of the terminal UE, such as a mobility management context and a user plane bearer of the user. Context information, the terminal UE completes the handover from the source network to the target network.
  • the specific contents of the above steps 203 to 207 are as follows:
  • the source network mobility management network element queries the target network mobility management network element according to the target network element identifier sent by the source network access network element, and establishes an ISR mobility management network element with the source network mobility management network element. Also in the target network mobility management network element list, the source network mobility management network element should select the mobility management network element with which the ISR management is established (MME1, reference) FIG. 3), and sending a forward handover request message, where the message includes the mobility management context and user plane bearer context information of the user.
  • MME1 mobility management network element with which the ISR management is established
  • the target network mobility management network element determines whether the current Source Serving GW can continue to serve the UE. If not, it reselects a new Serving GW, Target Serving GW. The target network mobility management network element controls the target network to allocate corresponding bearer resources and data forwarding resources to the handover users.
  • the target network mobility management network element returns a forward handover response message to the source network mobility management network element.
  • the source network mobility management network element interacts with the Source Serving GW to construct an indirect data forwarding channel. Specifically:
  • the source network mobility management network element sends a create bearer request message to the Source Serving GW.
  • the Source Serving GW sends a create bearer response message to the source network mobility management network element.
  • the source network mobility management network element sends a handover command to the source network access network element to command the source network access network element to start switching.
  • the source network The Wi-Fi network element sends a handover command to the UE to inform the UE to start the handover.
  • Source Network The incoming network element starts forwarding data to the target network.
  • the UE successfully accesses the target network.
  • the target network access network element confirms the UE access and sends a handover notification to the mobility management network element of the target network.
  • the target network mobility management network element sends a forward handover completion message to notify the source network mobility management network element.
  • the source network mobility management network element returns a forward handover completion confirmation message to the target network. Mobility management network element.
  • the target network mobility management network element sends an update bearer request message to the Target Serving GW to update the user plane bearer information.
  • the Target Serving GW may initiate an update bearer process, and update the bearer information on the PDN GW, such as the network type of the user. Specifically:
  • the Target Serving GW sends an update bearer request message to the PDN GW.
  • the PDN GW sends an update bearer acknowledgement message to the Target Serving GW.
  • the Target Serving GW returns an update bearer response message to the target network mobility management network element.
  • the bearer response message can carry an ISR indication, indicating that the ISR is successfully activated. Or, without any indication, the target mobility management network element considers that the ISR is activated after receiving the update bearer response message.
  • the terminal UE since the terminal UE is still in the original location area (RA or TA), the UE does not initiate a tracking/routing area update procedure TAU/RAU to the target mobility management network element.
  • the mobility management network element for establishing ISR management usually has a one-to-one relationship, but further, when establishing an ISR mobility management network element as a one-to-many relationship, refer to Table 1, for When the number of the mobility management network elements that establish the ISR with the source network mobility management network element is multiple, the service gateway returns a list of the mobility management network element addresses for establishing the ISR; correspondingly, refer to Table 2, The source network mobility management network element lists the mobility management network element of the target network that is queried by the target network element identifier sent by the source side network element.
  • the source network mobility management network element obtains the intersection ⁇ MME1 , MME3 ⁇ according to Table 1 and Table 2, and selects one of the intersections as the target mobility management network element according to the selection policy established by itself, wherein the selection
  • the policy may adopt a load balancing policy according to the load condition of the network element, or may adopt a manner according to the physical address.
  • the embodiment of the present invention does not limit the specific selection manner and method.
  • the embodiment of the present invention provides a method for switching between networks.
  • a schematic diagram of information interaction of the method is provided.
  • the source network mobility management network element acquires another ISR management from the Serving GW.
  • the address of the mobility management network element is provided.
  • the subsequent terminal UE is effectively guaranteed to perform normal services.
  • an embodiment of the present invention provides a method for switching between networks, which is different from Embodiment 2 in that the source network mobility management network element itself saves an ISR with the source network mobility management network element.
  • Mobility management network element information For the convenience of description, only one mobile management network element that establishes an ISR with the source network mobility management network element is used as an example for description.
  • the specific content is as follows: Step 301: The source access network mobility management network element obtains The handover request sent by the network element of the source access network obtains the mobility management NE list of the target network according to the target access network element identifier carried in the handover request.
  • Step 302 The source mobility management network element determines whether the pre-stored ISR-established mobility management network element is in the obtained mobility management network element list. If yes, go to step 303; otherwise, go to step 304.
  • Step 303 Select the mobility management network element that has established the ISR as the target network element, and then perform step 305.
  • Step 304 Select a mobility management network element from the mobility management network element list of the target network as the target network element, and then perform step 305.
  • Step 305 The source network mobility management network element sends a forward handover request to the selected target mobility management network element, where the forward handover request carries related information of the terminal UE, such as a mobility management context and a user plane bearer of the user. Context information;
  • the terminal UE completes the handover from the source access network to the target access network.
  • the source network access network element decides to initiate the handover.
  • the source network access network element sends a handover request message to the source network mobility management network element, and requests to start the handover, and indicates the bearer context that needs data forwarding.
  • the source network mobility management network element queries the mobility management network element of the target network according to the target access network element identifier sent by the source network access network element, if the UE activates the ISR and the source.
  • the network mobility management network element establishes the ISR mobility management network element in the target network mobility management network element list, and the source network mobility management network element should select the mobility management network element with which the ISR management is established (refer to the figure).
  • the SGSN selects the MME1) with which the ISR is established, and sends a forward handover request, where the forward handover request includes the mobility management context and user plane bearer context information of the user.
  • the target network mobility management network element determines whether the current Source Serving GW can continue to serve the UE. If not, it reselects a new Serving GW, Target Serving GW. The target network mobility management network element controls the target network to allocate corresponding bearer resources and data forwarding resources to the handover users.
  • the target network mobility management network element returns a forward handover response message to the source network mobility management network element.
  • the source network mobility management network element interacts with the Source Serving GW to construct an indirect data forwarding channel.
  • the source network mobility management network element sends a create bearer request message to the source Serving GW. 6b.
  • the Source Serving GW sends a create bearer response message to the source network mobility management network element.
  • the source network mobility management network element sends a handover command to the source network access network element to command the source network to enter the network element.
  • the source network The mobile network element sends a handover command to the UE, informing the UE to start the handover.
  • the source network access network element begins to forward data to the target network.
  • the UE successfully accesses the target access network and appears under the target network.
  • the target network access network element confirms the UE access, and sends a handover notification to the mobility management network element of the target network. 12a.
  • the target network mobility management network element sends a forward handover completion message to notify the source network mobility management network element.
  • the source network mobility management network element returns a forward handover completion confirmation message to the target network mobility management network element.
  • the target network mobility management network element sends an update bearer request message to Target Serving.
  • the Target Serving GW may initiate an update bearer process, and update the bearer information on the PDN GW, such as the type of the access network of the user. Specifically:
  • the Target Serving GW sends an update bearer request message to the PDN GW.
  • the PDN GW sends an update bearer acknowledgement message to the Target Serving GW.
  • the Target Serving GW returns an update bearer response message to the target network mobility management network element.
  • the embodiment of the present invention provides a method for switching between networks.
  • FIG. 10 a schematic diagram of information interaction of the method is provided.
  • the mobility management network element that activates the ISR mutually saves addresses, source mobility management.
  • the network element selects and establishes the ISR mobility management network element as the target network element, and ensures that the terminal UE has already registered in the target mobility management network element, thus avoiding the TAU/RAU process that occurs after the handover is completed.
  • the source network mobility management network element involved in the foregoing Embodiment 2 obtains the mobility management network element information of the ISR with the service gateway Serving GW, and the source network mobility management network element involved in Embodiment 3
  • the embodiment of the present invention also provides an establishment of an ISR for the problem of how to obtain the ISR mobility management network element information, and how the source network mobility management network element obtains the mobility management network element information of the ISR.
  • this embodiment provides a method for establishing an ISR.
  • the main solution is: How to establish the ISR's two mobility management NEs to save addresses with each other through the Serving GW and how to activate the ISR through the Serving GW. The details are as follows:
  • the terminal UE initiates a TAU/RAU request to the target network mobility management network element (target SGSN).
  • target SGSN target network mobility management network element
  • target SGSN send a context request to the source network with the RAT mobility management network element (source SGSN).
  • the Context Request message requests the UE context.
  • the RAT (Radio Access Technique) mobility management network element refers to a mobility management network element that uses the same access technology, for example, the MME is the same RAT mobility management network element with respect to the MME. Because they are all accessed through E-URTAN.
  • the SGSN is also the same RAT mobility management network element for the SGSN, and is accessed through GERAN/UTRAN. However, the SGSN is different (different) RAT access with respect to the MME (or MME versus SGSN) because its access technology is different, the MME is accessed through E-UTRAN and the SGSN is accessed through UTRAN/GERAN.
  • the source network and the RAT mobility management network element send a context response Context Response message to the target network and the RAT mobility management network element (target SGSN). If the source network activates the ISR, the source network is on the same as the RAT mobility management network element (source SGSN).
  • the Context Response message carries the source network different RAT mobility management network element (source MME) information, such as an IP address/TEID.
  • target SGSN send a context confirmation Context Acknowledge message to the source network and the RAT mobility management network element (source SGSN). See below for Option 1, Option 2, Option 3:
  • the target network determines to activate the ISR, and sends an ISR Indication message to the source network different RAT mobility management network element (source MME), where the information of the target network mobility management network element (target SGSN) (IP/TEID, etc.) is included in the message. .
  • source MME source network different RAT mobility management network element
  • target SGSN IP/TEID, etc.
  • the source network different RAT mobility management network element (source MME) saves the information (IP/TEID, etc.) of the target network mobility management network element (target SGSN), and sends an acknowledgement message. .
  • the target network determines to activate the ISR, and sends a context request Context Request message to the source network hetero-RAT mobility management network element (source MME), where the message carries an ISR indication ISR Indication, which is used to indicate that the target network requests the activation of the ISR by using the message.
  • source MME source network hetero-RAT mobility management network element
  • the source network hetero-RAT mobility management network element After receiving the message, the source network hetero-RAT mobility management network element (source MME) returns a context response Context Response message, and the message carries its own information (IP/TEID, a routing area allocated by the UE, etc.).
  • the target network decides to activate the ISR, and returns a context confirmation Context Ack message, which carries an ISR indication to activate the ISR.
  • the update bearer request message carries the ISR indication in step 5, and further carries the information of the target mobility management network element IP address and the control plane TEID, and is used for the source network different RAT mobility management network. Meta-interaction, this information can be associated with the IP address assigned to the Serving GW and the control plane TEID.
  • the target mobility management network element (target SGSN) supports the capability of the ISR, or; (2) the target mobility management network element (target SGSN) activates the ISR request.
  • the serving gateway Serving GW sends an ISR indication ISR Indication message to the source network hetero-RAT mobility management network element (source MME), where the message carries the target mobility management network element (target SGSN) information (IP/TEID, etc.). Or the serving gateway Serving GW sends an Update Bearer Request message to the source network hetero-RAT mobility management network element, where the message carries the target mobility management network element information, where the information includes the target mobility management network element IP address/control plane TEID. Further, the serving gateway may carry the ISR activation indication in the message to notify the source network that the RAT mobility management network element activates the ISR.
  • the source network different RAT mobility management network element saves the target network mobility management network element (target SGSN) information (IP/TEID, etc.) and sends an ISR acknowledge ISR Ack message, confirms the ISR activation, or the source network is different.
  • the RAT mobility management network element returns an Update Bearer Response message to the serving gateway Serving GW to confirm that the ISR is activated.
  • the ISR is maintained:
  • the target network mobility management network element (the target SGSN) sends a message to the serving gateway Serving GW, where the message carries an ISR indication, which may include but is not limited to the following meanings: (1) The target mobility management network element (target SGSN) supports the capability of the ISR, or; (2) the target mobility management network element (target SGSN) activates the ISR request.
  • the target network mobility management network element sends an update bearer request message to the monthly service gateway Serving GW. If the target network decides to activate the ISR, the update bearer request message carries an ISR indication, and the Serving GW is notified to activate the ISR.
  • the ISR indication may be the capability of the target network mobility management network element to support the ISR, or the target mobility management network element may determine the activation of the ISR.
  • the Serving GW sends a bearer update response message.
  • the Serving GW After receiving the bearer update request, the Serving GW determines whether the ISR can be activated. If the Serving GW can carry the ISR indication in the Update Bearer Response Update Bearer Response, notify the target mobility management network element (the target SGSN) whether the ISR is activated. .
  • the target network mobility management network element and the HSS interact to perform location update and obtain subscription data.
  • the target network mobility management network element sends a TAU/RAU Accept message to the terminal UE, indicating that the ISR is activated.
  • the terminal UE sends a TAU/RAU Complete message to the target network mobility management network element.
  • ISR ISR between network elements
  • the mobility management network element notifies the monthly service gateway Serving GW to activate the ISR, which is called notifying the Serving GW to establish an ISR.
  • the target mobility management network element notifies the source mobility management network element to activate the ISR, which is called the target mobility management network.
  • the meta-notification source mobility management network element establishes an ISR.
  • the method for establishing an ISR provided by the embodiment of the present invention successfully implements a target network mobility tube
  • the physical network element and the source network different RAT mobility management network element establish an ISR, and when both parties need to save each other's address information, the same purpose can be achieved for mutually storing the address information of the other party.
  • FIG. 12 is a schematic diagram of interaction of establishing an ISR according to Embodiment 5 of the present invention.
  • a method for establishing an ISR is provided, which mainly solves the problem of how to establish an ISR two mobility management network elements to save addresses with each other through the Serving GW when the ISR is established/held, as follows:
  • the source network access network element determines to trigger the handover.
  • the source network access network element sends a handover request message to the source network mobility management network element, and requests to start the handover, and indicates the bearer context that needs data forwarding.
  • the source network mobility management network element selects the mobility management network element of the target network according to the target network element identifier sent by the source side network element, and sends a forward handover request message, where the message includes the mobility management context and user plane of the user. Host context information. If the two mobility management network elements that activate the ISR save each other's addresses, the source network and the RAT mobility management network element pass the addresses of the source network different RAT mobility management network elements to the target network mobility management network element.
  • the target network mobility management network element determines whether the current Source Serving GW can continue to serve the UE. If not, it reselects a new Serving GW, Target Serving GW. The target network mobility management network element controls the target network to allocate corresponding bearer resources and data forwarding resources to the handover users.
  • the target network mobility management network element returns a forward handover response message to the source network mobility management network element.
  • the source network mobility management network element interacts with the Source Serving GW to construct an indirect data forwarding channel. Specifically: 6a. The source network mobility management network element sends a create bearer request message to the Source Serving GW. 6b. The Source Serving GW sends a create bearer response message to the source network mobility management network element.
  • the source network mobility management network element sends a handover command to the source network access network element to command the source network to enter the network element.
  • the source network The mobile network element sends a handover command to the UE, informing the UE to start the handover.
  • Source Network The network access NE starts to forward data to the target network.
  • the UE successfully accesses the target network.
  • the target network network confirms the UE access, and sends a handover notification to the mobility management network element of the target network.
  • the target network mobility management network element sends a forward handover completion message to notify the source network mobility management network element.
  • the source network mobility management network element returns a forward handover completion confirmation message to the target network mobility management network element.
  • the target network mobility management network element sends an update bearer request message to the Target Serving GW, and updates the user plane bearer information, where the message carries an ISR indication, which may include but is not limited to the following meanings:
  • the ISR capability of the target network mobility management network element or, (2) The target network mobility management network element wishes to activate the ISR.
  • the Target Serving GW may initiate an update bearer process, and update the bearer information on the PDN GW, such as the network type of the user. Specifically:
  • the Target Serving GW sends an update bearer request message to the PDN GW.
  • the PDN GW sends an update bearer acknowledgement message to the Target Serving GW. If the Serving GW has not changed (ie Source Serving GW and Target Serving GW are the same).
  • the Serving GW receives the ISR indication of the target network mobility management network element, and the Serving GW can:
  • the Serving GW sends a message to the source network hetero-RAT mobility management network element, and the message carries an ISR indication, and the target mobility management network element information (IP/TEDI, etc.).
  • the message may be the following but not limited to the following messages: (1) is a dedicated ISR Indication message; (2) borrows the current Update Bearer Request message. After receiving the message, the source network hetero-RAT mobility management network element sends a message to respond or acknowledge. Or,
  • the Serving GW After receiving the ISR indication from the target mobility management network element, the Serving GW determines whether the ISR can be activated. In step 16, it returns an indication of whether the ISR is activated. specifically,
  • the Target Serving GW sends an ISR indication or an update bearer response message to the Source Serving GW.
  • the Source Serving GW sends an ISR indication or an update bearer confirmation message to the Target Serving GW.
  • the Target Serving GW returns an update bearer response message to the target network mobility management network element.
  • the message may carry an ISR Indication, such as an ISR that the UE has activated in the source network, and the Serving GW determines that the ISR can be activated.
  • the UE If the current access technology changes, the UE is in the ECM-CONNECTED state, and the UE initiates a tracking/routing area update process to the target mobility management network element.
  • the target network mobility management network element may initiate a security process according to the configuration.
  • the target network mobility management network element initiates an update location request message to the HSS, and will itself HSS. 20a.
  • the HSS sends the insertion subscription data to the target network mobility management network element.
  • the target network mobility management network element verifies whether the UE can access the current location according to the subscription data, and sends an insertion subscription data confirmation message to the HSS according to the result. If the UE can access, the target network mobility management network element constructs the UE context.
  • the HSS sends a location update confirmation message to the target network mobility management network element.
  • the target network mobility management network element sends an accept tracking/routing area update accept message to the terminal UE.
  • the terminal UE sends a tracking/routing area update completion message to the target network mobility management network element.
  • the method for establishing an ISR provided by the embodiment of the present invention successfully implements the ISR of the target network mobility management network element and the source network different RAT mobility management network element, and can also save each other when the two parties need to save each other's address information.
  • the method for establishing an ISR provided by the embodiment of the present invention successfully implements the ISR of the target network mobility management network element and the source network different RAT mobility management network element, and mutually stores the address information of the other party, and the terminal UE perceives the access technology.
  • the TAU/RAU process is initiated to ensure that the target mobility management network element registers with the HSS and obtains the subscription data, and ensures that the terminal UE acquires the target network mobility management network element to allocate a new temporary identifier to the UE (P -TMSI/GUTI), thereby effectively ensuring that the subsequent terminal UE performs normal services.
  • an embodiment of the present invention provides a terminal device, where the device includes:
  • a judging module configured to determine whether an initiation condition of the location area update process is satisfied; wherein the location The initiation conditions of the area update process include: The access technology of the terminal changes;
  • the processing module is configured to initiate a location area update process to the mobility management network element in the target network when the judgment result of the determining module is yes.
  • the terminal device provided by the embodiment of the present invention actively initiates a TAU/RAU process after the terminal device senses that the access technology is changed, thereby ensuring that the target mobility management network element registers with the HSS and obtains subscription data, and ensures that the subscription data is obtained.
  • the terminal device obtains the target network mobility management network element to allocate a new temporary identifier (P-TMSI/GUTI) to the UE, thereby effectively ensuring that the subsequent terminal device performs normal services.
  • P-TMSI/GUTI new temporary identifier
  • an embodiment of the present invention provides a system for switching between networks, where the system includes: a source network mobility management network element, a target mobility management network element; and a target mobility management network element. Establishing an ISR with the source network mobility management network element and in the mobility management network element list of the target network;
  • the source network mobility management network element is configured to obtain the mobility management network element list information of the ISR established by itself and the mobility management network element list information of the target network; the mobility management network element list information according to the establishment of the ISR and the target network Mobility management network element list information, selecting a mobility management network element in the target network that establishes an ISR with the source network mobility management network element as a target mobility management network element; and is further configured to send to the selected target mobility management network element Switching the request to complete the handover of the terminal from the source network to the target network;
  • the target mobility management network element is configured to receive a handover request sent by the source network mobility management network element, and complete handover of the terminal from the source network to the target network.
  • the system further includes: Service gateway
  • the source network mobility management network element is further configured to: after sending the acquisition request to the serving gateway, acquire the mobility management network element list information that is returned by the service gateway and establish an ISR with the source network mobility management network element;
  • the serving gateway is configured to receive the acquisition request sent by the source network mobility management network element, and return the mobility management network element list information that is used to establish an ISR with the source network mobility management network element.
  • the system for inter-network handover selects the mobility management network element of the ISR as the target network element of the handover by using the source network mobility management network element, so as to ensure that the terminal is already in the target mobility.
  • the management NE is registered to prevent the terminal from performing normal TAU/RAU processes after the handover is completed.
  • an embodiment of the present invention provides a mobility management network element, where the mobility management network element includes:
  • An obtaining module configured to acquire mobility management network element list information that establishes an ISR with itself, and mobility management network element list information of the target network;
  • a selection module configured to select, according to the mobility management network element list information of the ISR obtained by the obtaining module, and the mobility management network element list information of the target network, to select the mobility of the ISR in the target network and the source network mobility management network element.
  • the management network element is used as the target mobility management network element; the switching module is configured to send a handover request to the target mobility management network element selected by the selection module, to complete the handover of the terminal from the source network to the target network.
  • the selection module specifically includes:
  • a first selection unit configured to acquire an ISR mobility management network element according to the acquiring module
  • the list information and the mobility management network element list information of the target network select the intersection network element; when the number of intersection network elements is one, the intersection network element is the target mobility management network element;
  • a second selecting unit configured to select an intersection network element according to the mobility management network element list information of the ISR and the mobility management network element list information of the target network acquired by the acquiring module; when the number of the intersection network elements is multiple, According to the selection strategy, one of the plurality of intersection network elements is selected as the target mobility management network element.
  • the mobility management network element provided by the embodiment of the present invention selects the mobility management network element of the ISR through the source network mobility management network element as the target network element of the handover, so that the terminal is already in the target.
  • the mobility management network element is registered to prevent the terminal from performing normal operations after the TAU/RAU process occurs after the handover is completed.
  • the embodiment of the present invention provides a system for establishing an ISR, where the system includes: a target network mobility management network element, and a source network and a RAT mobile mobility management network element as a source.
  • the network and the target network mobility management network element are the same as the radio access type RAT mobility management network element, and the different RAT mobility management network element in the source network is the source network and the target network mobility management network element different radio access type RAT Mobility management network element;
  • the source network and the RAT mobile mobility management network element are configured to receive a context request sent by the target network mobility management network element, and return a context response;
  • the source network hetero-RAT mobility management network element is used to establish an ISR with the target network mobility management network element.
  • the target network mobility management network element includes:
  • a sending and receiving module configured to wirelessly communicate with the target network mobility management network element in the source network
  • the access type RAT mobility management network element sends a context request; and is further configured to receive a context response returned by the source network and the RAT mobile mobility management network element, where the context response carries an ISR with the source network and the RAT mobile mobility management network element.
  • Information of the different RAT mobility management network element in the source network
  • a first establishing module configured to establish an ISR with the RAT mobility management network element in the source network according to the information of the RAT mobility management network element in the source network acquired by the sending and receiving module; and the different RAT mobility management network in the source network
  • the yuan includes:
  • the second establishing module is configured to establish an ISR with the target network mobility management network element.
  • the first establishing module is specifically:
  • a first processing unit configured to send a message to the source network hetero-RAT mobility management network element, where the message carries the information of the target network mobility management network element and the ISR indication information;
  • the second establishing module is specifically:
  • the second processing unit is configured to: after receiving the message sent by the first processing unit, return a response or a confirmation message.
  • the first establishing module is specifically:
  • a third processing unit configured to send a message to the source network, the RAT mobility management network element, where the message carries the ISR indication information and the information of the target network mobility management network element, where the ISR indication information includes at least the target network mobility management network element support.
  • the message carries the ISR indication information and the information of the target network mobility management network element, where the ISR indication information includes at least the target network mobility management network element support.
  • the second establishing module is specifically:
  • a fourth processing unit configured to: after receiving the message sent by the third processing unit, return a response message carrying information of the source network different RAT mobility management network element.
  • the system also includes a service gateway.
  • the first establishing module is specifically:
  • a fifth processing unit configured to send an update bearer request to the serving gateway, where the update bearer request carries the ISR indication information
  • the second establishing module of the source network different RAT mobility management network element is specifically: the sixth processing unit, configured to receive the message sent by the serving gateway, save the target network mobility management network element information, and return a confirmation to the service gateway. Establish an ISR message.
  • the system also includes a service gateway.
  • a service gateway configured to receive an update bearer request sent by the target network mobility management network element; the request carries the ISR indication information, and sends a message to the source network different RAT mobility management network element, where the message carries the ISR related information; and moves to the target network
  • the management NE returns a message, and the returned message carries an indication of whether to activate the ISR.
  • the first establishing module of the target network mobility management network element is specifically:
  • a seventh processing unit configured to send an update bearer request to the serving gateway; the request carries the ISR indication information, and receives a message returned by the serving gateway, where the returned message carries an indication of whether the ISR is activated;
  • the second establishing module of the source network different RAT mobility management network element is specifically: an eighth processing unit, configured to receive a message sent by the serving gateway, where the message carries ISR related information, and saves the target network mobility management network element information. , and return a message confirming the establishment of the ISR.
  • the system for establishing an ISR succeeds by carrying an ISR indication identifier.
  • the target network mobility management network element and the source network different RAT mobility management network element are configured to establish an ISR.
  • the mobility management network element that wants to establish an ISR needs to save each other's information, the two parties mutually successfully save each other's information.
  • the embodiment of the present invention provides a mobility management network element, where the mobility management network element network element includes:
  • a sending and receiving module configured to send a context request to the mobility management network element and the radio access type RAT mobility management network element to the source network; and further, receive the context response returned by the source network and the RAT mobile mobility management network element
  • the context response carries the information of the inter-RAT mobility management network element in the source network that establishes the ISR with the source network and the RAT mobile mobility management network element; the first establishing module is configured to obtain the difference in the source network according to the sending and receiving module.
  • the RAT mobility management network element information establishes an ISR with the inter-RAT mobility management network element in the source network.
  • the first establishing module is specifically:
  • a first processing unit configured to send, to the source network, the RAT mobility management network element, a request message that carries the information of the target network mobility management network element, where the request message is used to indicate that the source network different RAT mobility management network element establishes an ISR;
  • a third processing unit configured to send a message to the source network, the RAT mobility management network element, where the message carries the ISR indication information and the information of the target network mobility management network element, where the ISR indication information includes at least the target network mobility management network element support.
  • the message carries the ISR indication information and the information of the target network mobility management network element, where the ISR indication information includes at least the target network mobility management network element support.
  • a fifth processing unit configured to send an update bearer request to the serving gateway, where the update bearer request carries the ISR indication information; or
  • the seventh processing unit is configured to send an update bearer request to the serving gateway.
  • the request carries the ISR indication information, and receives a message returned by the service gateway, where the returned message carries an indication of whether to activate the ISR.
  • the mobility management network element further includes:
  • the second establishing module is configured to establish an ISR with the target network mobility management network element according to the ISR indication identifier.
  • the second establishing module is specifically:
  • a second processing unit configured to: after receiving the ISR indication message sent by the target network mobility management network element, save the information of the target network mobility management network element, and return to confirm the source network different RAT mobility management network element to establish an ISR Reply message; or,
  • a fourth processing unit configured to: after receiving the request message sent by the target network mobility management network element, return a response message carrying information of the source network different RAT mobility management network element; or, a sixth processing unit, configured to receive the service
  • the message sent by the gateway saves the target network mobility management network element information, and returns a confirmation to the service gateway to establish an ISR message; or
  • the eighth processing unit is configured to receive a message sent by the serving gateway, where the message carries ISR related information, saves the target network mobility management network element information, and returns a message to confirm that the ISR is established.
  • the mobility management network element provided by the embodiment of the present invention successfully implements the target network mobility management network element and the source network different RAT mobility management network element to establish an ISR by carrying the ISR indication identifier, and is to establish an ISR mobility management network.
  • the two parties successfully achieve the purpose of saving each other's information.
  • an embodiment of the present invention provides a construction.
  • the system of the ISR when the UE moves from the source network to the target network, the system includes: a target network mobility management network element, a service gateway;
  • the target network mobility management network element is configured to send a message to the serving gateway, where the message carries the ISR indication information, where the ISR indication information is the capability of the target network mobility management network element to support the ISR, or the target network mobility management network element activates the ISR.
  • the serving gateway is configured to obtain a message sent by the target network mobility management network element, where the message carries the ISR indication information; when the ISR indication information is that the target network mobility management network element supports the ISR capability, the response message is returned; when the ISR indication information is When the target network mobility management network element activates the ISR request, it determines that the ISR can be activated, and then returns a message to the target network mobility management network element, and the returned message carries information to notify the target network mobility management network element that the ISR is activated.
  • the system provided by the embodiment of the present invention successfully implements a method for maintaining an ISR through a service gateway when intra-RAT mobility occurs.
  • the embodiment of the present invention provides a mobility management network element, including:
  • a sending module configured to send a message to the serving gateway, where the message carries the ISR indication information, where the ISR indication information includes the capability of the target network mobility management network element to support the ISR, or one of the request information of the target network mobility management network element to activate the ISR ;
  • the receiving module is configured to receive a message returned by the serving gateway.
  • the ISR indication information is a request for the target network mobility management network element to activate the ISR
  • the returned message carries information indicating that the target mobility management network element activates the ISR.
  • the mobility management network element provided by the embodiment of the present invention successfully implements intra-RAT mobility When the service gateway maintains the purpose of the ISR.
  • the embodiment of the present invention provides a service gateway, where the ISR service gateway includes:
  • a receiving module configured to receive a message sent by a target network mobility management network element; the message carries an ISR indication information
  • a processing module configured to: when the ISR indication information carried in the message received by the receiving module is the capability of the target network mobility management network element to support the ISR, return a response message; and when the ISR indication information is the target network mobility management network element, the ISR is activated.
  • the request is made, it is judged that the ISR can be activated, and a message is returned to the target network mobility management network element, and the returned message carries information to notify the target network mobility management network element that the ISR is activated.
  • the service gateway provided by the embodiment of the present invention successfully implements a method for maintaining an ISR through a serving gateway when intra-RAT mobility occurs.
  • Some of the steps in the embodiment of the present invention may be implemented by software, and the corresponding software program may be stored in a readable storage medium such as an optical disk or a hard disk.

Landscapes

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

Description

网络间切换、 位置区更新、 建立 ISR的方法和系统、 设备 本申请要求于 2008 年 06 月 16 日提交中国专利局、 申请号为 200810099665.7、 发明名称为"网络间切换、 位置区更新、 建立 ISR的方法和 系统、设备"的中国专利申请的优先权,其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信领域, 特别涉及网络间切换、 位置区更新、 建立 ISR的 方法和系统、 设备。 背景技术
随着无线通信技术的发展, 参见图 1 , 提供了一种无线演进网络架构 示意图, 其中, 当无线演进网络的核心网主要包含 MME ( Mobility Management Entity, 移动管理实体)、 SGW( Serving Gateway, 服务网关)、 PGW(PDN Gateway, Packet Data Network Gateway, 分组数据网关)三个逻 辑功能体, 其中, MME是移动管理实体负责 NAS ( Non- Access- Stratum, 非接入层)信令和 NAS信令加密以及漫游、 跟踪等功能, 分配用户临时 身份标识、 安全功能等, SGW 负责本地的移动性锚点和 3GPP ( 3rd Generation Partnership Proj ect, 第三代伙伴计划)系统内部的移动性错点以 及合法监听相关信息; PGW负责策略执行和计费以及合法监听相关功能。
在不同的 3GPP接入技术网络重叠或者相邻的区域, 移动用户每次改 变接入系统, 比如无论是从 GERAN ( GSM (GPRS)/EDGE Radio Access Network, 无线接入网络) /UTRAN ( Universal Mobile Telecommunications System Territorial Radio Access Network,通用移动通信系统(UMTS)陆地无 线接入网络) 到 EUTRAN ( Evolved UMTS Territorial Radio Access Network , 演进的 UMTS 陆地无线接入网络) , 还是从 EUTRAN 到 GERAN/UTRAN, 都需要发起位置区更新流程。 即:
终端 UE在进行网络间切换时, 发现处于新的位置区 (目标网络分配 的 TA或 RA ) , 即不在源移动管理网元分配的 TA/ RA list内, 则终端 UE 向目标移动性管理网元发送跟踪区 /路由区更新请求 TA/RA Update Request , 发起跟踪 /路由区更新流程。
终端 UE在进行网络间切换时, 如果没有发现处于新的位置区, 则不 会发起跟踪 /路由区更新流程, 例如,
参见图 2, 假设 SGSN与 MME1建立了 ISR, 终端 UE会保存 SGSN 分配 P-TMSI和 RAI,以及 MME1分配的 GUTI TAlist(TAl,TA2,TA3,TA4), 正在数传的终端 UE从 RA1移动到 TA1 , 即发生了 RAT切换, 源网络元 (RNC , Radio Network Controller, 无线接入控制器)根据 UE发送的测量报 告, 决定将 UE从 UTRAN切换到 E-UTRAN, 目标网络元为 eNodeBl (基 站 ) 。 源移动管理网元(SGSN)根据目标网络元 (eNodeBl)标识会选择目标 移动性管理网元 (MME1或者 MME2)。 如果 SGSN选择了 MME2, 且如果 MME2选择了不同的 Serving GW, 切换完成后, SGSN向源 Serving-GW 发送承载译放消息, 源 Serving GW会通知 MMEl删除保存的终端 UE相 关的承载上下文。 当切换流程完成后, 由于 TA1处于 MME1之前分配的 TA List中, 因此 UE不会发起 TAU流程。 一方面由于 UE不发起 TAU流 程, 导致的 UE不能获取 MME2分配的 GUTI/TA list, MME2无法在 HSS 注册并获取签约数据, 另一方面 MME1 已经删除 UE相关信息, 即: UE 实际附着在 SGSN和 MME2上, 但是保存的临时标识是 SGSN和 MME1 分配的 , 而 MME1 已经删除 UE相关信息; HSS保存 UE的注册地址也是 SGSN和 MME1的, 当 UE转入空闲态后, 不能再进行业务。 参考图 3 , 提供了终端 UE的服务请求流程示意图, 其中,
1、 UE向 MME1发起服务请求 Servive Request流程, 其中, 终端 UE从自身的保存的 GUTI ( MME1 分配的) 中推导出 GUMMEI ( MME 的全局标识 ) 上报到 eNodeBl , NodeBl根据 GUMMEI选择 MMEl并将 Service Request消息传送到 MME1。
2、 MMEl收到该服务请求 Servive Request后, 由于 MME1 已经将 该终端 UE相关信息删除, 根据 GUTI不能确定终端 UE的上下文, 因此 向 UE发送服务拒绝 Service Reject。
综上所述, 现有技术提供的网络切换的流程, 针对建立 ISR 激活的 UE在发生 RAT间的切换时, 由于终端 UE在 RAT切换后位置区仍在其 之前获取的 TA LIST中, 而目标网元 eNodeB选择了与终端 UE没有建立 ISR关联的 MME, 因此, 造成终端 UE不会发起位置区更新, 进而无法获 取新的 MME分配的新的临时标识, 无法将新的 MME注册到 HSS中, 从 而导致不能进行业务。 发明内容
针对建立 ISR激活的 UE在发生 RAT间的切换时, 避免由于终端 UE 保存的临时标识无效而导致不能正常进行业务的问题, 本发明实施例提供 网络间切换、 位置区更新、 建立 ISR的方法和系统、 设备。 所述技术方案 如下:
一方面, 提供了一种网络间切换过程中位置区更新的方法, 目标网络 分配的位置区信息在终端设备预存的位置区信息列表中时, 所述方法包 括:
终端设备判断满足位置区更新流程的发起条件, 向所述目标网络中的 移动性管理网元发起位置区更新流程, 其中所述位置区更新流程的发起条 件包括: 所述终端的接入技术发生改变。
一方面, 提供了一种网络间切换的方法, 所述方法包括:
源网络移动性管理网元获取与自身建立 ISR的移动性管理网元列表信 , ¾以及目标网络的移动性管理网元列表信息;
根据所述与自身建立 I SR的移动性管理网元列表信息以及目标网络的 移动性管理网元列表信息, 选择目标网络中的与所述源网络移动性管理网 元建立 ISR的移动性管理网元作为目标移动性管理网元;
向所述选择的目标移动性管理网元发送前向切换请求, 完成终端由源 网络到目标网络的切换。
一方面, 提供了一种建立 ISR的方法, 当 UE从源网络移动到目标网 络时, 所述方法包括;
目标网络移动性管理网元向源网络中与所述目标网络移动性管理网 元同无线接入技术 RAT移动性管理网元发送上下文请求;
接收所述源网络同 RAT移动移动性管理网元返回的上下文响应, 所 述上下文响应中携带与所述源网络同 RAT 移动移动性管理网元已建立 ISR的源网络异 RAT移动性管理网元的信息; 根据获取的源网络异 RAT移动性管理网元的信息, 与所述源网络异 RAT移动性管理网元建立 ISR。
一方面, 提供了一种建立 ISR的方法, 当 UE从源网络移动到目标网 络时, 所述方法包括;
服务网关获取目标网络移动性管理网元发送的消息, 所述消息携带 ISR指示信息; 当所述 ISR指示信息为目标网络移动性管理网元支持 ISR 的能力时, 所述服务网关返回响应消息;
当所述 ISR指示信息为所述目标网络移动性管理网元激活 ISR的请求 时, 所述服务网关判断可以激活 ISR后, 向所述目标网络移动管理网元返 回消息,返回的消息中携带信息通知所述目标网络移动性管理网元激活了 ISR。
另一方面, 提供了一种终端设备, 所述设备包括:
判断模块, 用于判断是否满足位置区更新流程的发起条件; 其中所述 位置区更新流程的发起条件包括:所述终端的接入技术发生改变;
处理模块, 用于当所述判断模块的判断结果为是, 向所述目标网络中 的移动性管理网元发起位置区更新流程。
另一方面, 提供了一种网络间切换的系统, 所述系统包括: 源网络移 动性管理网元、 目标移动性管理网元; 目标移动性管理网元为与所述源网 络移动性管理网元建立了 ISR且在目标网络的移动性管理网元列表中; 所述源网络移动性管理网元, 用于获取与自身建立 ISR的移动性管理 网元列表信息以及目标网络的移动性管理网元列表信息; 根据所述建立 ISR 的移动性管理网元列表信息以及目标网络的移动性管理网元列表信 息, 选择目标网络中的与所述源网络移动性管理网元建立 ISR的移动性管 理网元作为目标移动性管理网元; 还用于向所述选择的目标移动性管理网 元发送切换请求, 完成终端由源网络到目标网络的切换;
所述目标移动性管理网元, 用于接收所述源网络移动性管理网元发送 的切换请求, 完成终端由源网络到目标网络的切换。
另一方面, 提供了一种移动性管理网元, 所述网元包括:
获取模块, 用于获取与自身建立 ISR的移动性管理网元列表信息以及 目标网络的移动性管理网元列表信息;
选择模块, 用于根据所述获取模块获取的建立 ISR的移动性管理网元 列表信息以及目标网络的移动性管理网元列表信息, 选择目标网络中的与 所述源网络移动性管理网元建立 ISR的移动性管理网元作为目标移动性管 理网元;
切换模块, 用于向所述选择模块选择的目标移动性管理网元发送切换 请求, 完成终端由源网络到目标网络的切换。
另一方面, 提供了一种建立 ISR的系统, 其特征在于所述系统包括; 目标网络移动性管理网元、 源网络同无线接入技术 RAT移动移动性管理 网元为源网络中与所述目标网络移动性管理网元同无线接入技术 RAT移 动性管理网元, 源网络异 RAT移动性管理网元为源网络中与所述目标网 络移动性管理网元异 R A T移动性管理网元;
所述目标网络移动性管理网元, 用于向源网络中与所述目标网络移动 性管理网元同 RAT移动性管理网元发送上下文请求; 还用于接收源网络 同 RAT移动移动性管理网元返回的上下文响应, 所述上下文响应中携带 与所述源网络同 RAT移动移动性管理网元建立 ISR的源网络中异 RAT移 动性管理网元的信息; 还用于根据获取的源网络中异 RAT移动性管理网 元的信息, 与所述源网络中异 RAT移动性管理网元建立 ISR;
所述源网络同 RAT移动移动性管理网元, 用于接收所述目标网络移 动性管理网元发送的上下文请求后, 返回上下文响应;
所述源网络异 RAT移动性管理网元, 用于与所述目标网络移动性管 理网元建立 ISR
另一方面, 提供了一种移动性管理网元, 所述网元包括:
发送及接收模块, 用于向源网络中与所述移动性管理网元同无线接入 类型 RAT移动性管理网元发送上下文请求; 还用于接收源网络同 RAT移 动移动性管理网元返回的上下文响应, 所述上下文响应中携带与所述源网 络同 RAT移动移动性管理网元建立 ISR的源网络中异 RAT移动性管理网 元的信息;
第一建立模块,用于根据所述发送及接收模块获取的源网络中异 RAT 移动性管理网元的信息, 与所述源网络中异 RAT 移动性管理网元建立 ISR。
再一方面, 提供了一种建立 ISR的系统, 当 UE从源网络移动到目标 网络时所述系统包括: 目标网络移动管理网元、 服务网关;
所述目标网络移动性管理网元, 用于向所述服务网关发送消息, 所述 消息携带 ISR指示信息,所述 ISR指示信息为目标网络移动性管理网元支 持 ISR的能力, 或, 所述目标网络移动性管理网元激活 ISR的请求;
所述服务网关, 用于获取所述目标网络移动性管理网元发送的消息, 所述消息携带 ISR指示信息; 当所述 ISR指示信息为目标网络移动性管理 网元支持 ISR的能力时, 返回响应消息; 当所述 ISR指示信息为所述目标 网络移动性管理网元激活 ISR的请求时, 判断可以激活 ISR后, 向所述目 标网络移动管理网元返回消息,返回的消息中携带信息通知所述目标网络 移动性管理网元激活了 ISR。
再一方面, 提供了一种移动性管理网元, 所述移动性管理网元包括: 发送模块,用于向所述服务网关发送消息,消息中携带 ISR指示信息, 所述 ISR指示信息包含目标网络移动性管理网元支持 ISR的能力, 或, 目 标网络移动性管理网元激活 ISR的请求信息之一;
接收模块,用于接收所述服务网关返回的消息,当所述 ISR指示信息为 目标网络移动性管理网元激活 ISR的请求时,返回的消息中携带信息指示 目标移动性管理网元激活 ISR。
再一方面, 提供了一种服务网关, 所述服务网关包括:
接收模块, 用于接收目标网络移动性管理网元发送的消息; 所述消息 携带 ISR指示信息
处理模块, 用于当接收模块接收的消息中携带的 ISR指示信息为目标 网络移动性管理网元支持 ISR的能力时, 返回响应消息; 当所述 ISR指示 信息为所述目标网络移动性管理网元激活 ISR 的请求时, 判断可以激活 ISR后, 向所述目标网络移动管理网元返回消息,返回的消息中携带信息通 知所述目标网络移动性管理网元激活了 ISR。
本发明实施例提供的技术方案的有益效果是:
通过本发明实施例提供的技术方案, 终端执行网络间切换, 当目标网 络分配的位置区信息在终端设备预存的位置区信息列表中时, 由终端判断 其自身的接入技术发生改变, 向目标网络中的移动性管理网元发起位置区 更新流程, 确保了终端执行位置区更新流程, 获取新分配的临时标识; 或 者,通过选择与源移动性管理网元建立了 ISR关联的目标移动性管理网元, 从而有效地保证了终端拥有的临时标识为有效标识, 确保了后续终端 UE 进行正常的业务。 附图说明
图 1是现有技术提供的一种无线演进网络架构示意图;
图 2是现有技术提供的终端执行 RAT间切换示意图;
图 3是现有技术提供的终端的服务请求流程示意图;
图 4是本发明实施例 1提供的网络间切换的方法流程图;
图 5是本发明实施例 1提供终端的服务请求流程示意图;
图 6是本发明实施例 1提供的网络间切换的信息交互示意图; 图 7是本发明实施例 2提供的网络间切换的方法流程图;
图 8是本发明实施例 2提供的网络间切换的信息交互示意图; 图 9是本发明实施例 3提供的网络间切换的方法流程图;
图 10是本发明实施例 3提供的网络间切换的信息交互示意图; 图 11是本发明实施例 4提供的建立 ISR的交互示意图;
图 12是本发明实施例 5提供的建立 ISR的交互示意图;
图 13是本发明实施例 6提供的终端设备示意图;
图 14是本发明实施例 7提供的网络间切换的系统示意图;
图 15是本发明实施例 8提供的移动性管理网元示意图; 图 16是本发明实施例 9提供的建立 ISR的系统示意图; 图 17是本发明实施例 10提供的移动性管理网元示意图;
图 18是本发明实施例 11提供的建立 ISR的系统示意图;
图 19是本发明实施例 12提供的移动性管理网元示意图;
图 20是本发明实施例 13提供的服务网关示意图。 具体实施方式
针对建立 ISR激活的终端 UE在发生 RAT间的切换时, 目标网络分 配的位置区信息在终端设备预存的位置区信息列表中时, 避免由于终端 UE 保存的临时标识无效而导致不能正常进行业务的问题, 本发明实施例 提供了一种网络间切换过程中位置区更新的方法, 该方法内容如下: 终端 设备判断满足位置区更新流程的发起条件, 向目标网络中的移动性管理网 元发起位置区更新流程, 其中位置区更新流程的发起条件包括: 终端的接 入技术发生改变。
本发明实施例还提供了一种网络间切换的方法, 该方法内容如下: 源 网络移动性管理网元获取与自身建立 ISR的移动性管理网元列表信息以及 目标网络的移动性管理网元列表信息; 根据建立 ISR的移动性管理网元列 表信息以及目标网络的移动性管理网元列表信息, 选择目标网络中的与源 网络移动性管理网元建立 ISR 的移动性管理网元作为目标移动性管理网 元; 向选择的目标移动性管理网元发送切换请求, 完成终端由源网络到目 标网络的切换。 一种方法请参见实施例 1 , 针对第 2种方法请参见实施例 2和 3: 实施例 1
图 4是本发明实施例 1提供的网络间切换的方法流程图。 参见图 4和 图 6, 本发明实施例提供了网络间切换过程中位置区更新的方法,一种网络 间切换的方法, 该方法以终端 UE 感知到自身的接入技术发生改变触发 TAU流程为例进行说明, 该方法内容如下:
步骤 101 : 源网络和目标网络建立终端 UE执行切换的准备工作, 目 标网络获取终端 UE的相关信息, 如移动管理上下文和用户面承载上下文 信息等等。 具体内容如下:
1 - 2、 源网络接入网网元决定执行由源网络向目标接网的切换后 , 向 源网络移动管理网元发送切换请求 Handover Request, 该切换请求中携带 了目标网络接入网网元的标识;
3、 源网络移动性管理网元根据目标网络接入网网元的标识, 获取目 标网络移动性管理网元, 向获取的目标网络移动性管理网元发送前转切换 请求 Forward Relocation Request, 该前转切换请求中携带了终端 UE的移 动性管理上下文和用户面承载上下文信息等。
4、 目标网络移动性管理网元决定当前的 Source Serving GW是否能继 续月良务于终端 UE,如果不能,就重新选择一个新的 Serving GW (即 Target Serving GW ) 。 目标网络移动性管理网元控制目标网络接入网网元为切换 用户分配相应的承载资源和数据转发资源。 响应 Forward Relocation Response。
如果数据转发采用非直接数据转发, 源网络移动性管理网元同 Source
Serving GW交互, 构建非直接数据转发通道。 具体为: 6a、 源网络移动性管理网元向 Source Serving GW发送创建承载请求。
6b、 Source Serving GW向源网络移动性管理网元发送创建承载响应。 7、 源网络移动性管理网元向源网络接入网网元发送切换命令
Handover Command, 用于命令源网络开始切换。
8、 源网络接入网网元向终端 UE发送切换命令 Handover Command, 用于通知 UE开始切换。
9、 源网络接入网网元开始向目标网络接入网网元转发数据。
10、 终端 UE出现于目标网络下, 即目标网络接入网网元捕获到终端 UE成功接入。
11、 目标网络接入网网元确证终端 UE接入后 , 向目标网络的移动性 管理网元发送切换通知 Handover Notify。
12a. 目标网络移动性管理网元收到切换通知 Handover Notify后, 向 源网络移动性管理网元发送前向切换完成 Forward Relocation Complete。 返回前向切换完成确认消息 Forward Relocation ACK:。
13、 目标网络移动性管理网元向 Target Serving GW发送更新承载请 求 Update Bearer Request, 用于更新用户面 载信息。
Target Serving GW可能发起更新承载过程, 更新 PDN GW上承载信 息, 比如用户的网络类型等。 具体为:
14a、 Target Serving GW向 PDN GW发送更新承载请求。
14b、 PDN GW向 Target Serving GW发送更新承载确认。
15、 Target Serving GW返回更新承载响应 Update Bearer Response至 目标网络移动性管理网元。
步骤 102: 终端 UE判断是否自身的接入技术发生了改变, 如果是, 执行步骤 103 ; 否则, 执行步骤 104。
其中, 本领域技术人员可以获知, 终端 UE可以根据接收到的无线信 号, 判断是否发现无线接入技术的改变。 进一步, 终端 UE还可以其他的 方式获知自身的接入技术发生了改变, 如通过网络侧主动向终端 UE下发 通知, 该通知中携带终端 UE的接入发生改变的信息, 相应地, 终端 UE 根据获取的该通知获知自身的接入技术发生了改变, 本实施例以终端 UE 可以根据接收到的无线信号判断自身的接入技术是否发生改变为例进行 说明。
步骤 103: 终端 UE向目标移动性管理网元发起跟踪 /路由区更新流程 ( TAU/RAU,TA/RA Update Request ) , 完成将目标移动性管理网元到 HSS 的注册, 并获取目标移动性管理网元分配的新的临时标识, 流程结束。 具 体内容如下:
16、 终端 UE 向目标移动性管理网元发起跟踪 /路由区更新流程 (TAU/RAU,TA/RA Update Request)。
17、 目标网络移动性管理网元可能根据配置, 发起安全流程。
18、 目标网络移动性管理网元发起到 HSS的更新位置请求,将自己登 记到 HSS。
19a、 HSS向目标网络移动性管理网元插入签约数据。
19b、目标网络移动性管理网元根据签约数据验证 UE是否可以在当前 位置接入, 并根据结果向 HSS发送插入签约数据确认消息。 如果 UE可以 接入, 目标网络移动性管理网元构造 UE上下文。
20、 HSS向目标网络移动管理网元发送位置更新确认消息。
21、 目标网络移动性管理网元向 UE发送跟踪 /路由区更新接受消息, 使 UE接受跟踪 /路由区更新请求。
11、 UE向目标网络移动性管理网元发送跟踪 /路由区更新完成消息, 完成 3艮踪 /路由区更新。
步骤 104: 终端 UE不发起跟踪 /路由区更新流程, 流程结束。
以图 3提供的终端 UE执行 RAT间切换示意图为例进行说明, 终端 UE从 RA1移动到 TA1 时, 由于 RA1和 TA1 隶属于不同的 RAT(Radio Access Technique)网络( RA1属于 RNC侧网络 ,ΤΑ属于 eNodeB侧网络), 终端 UE感知自身的接入技术的改变后, 向目标网络移动管理网元 (即目 标网络元选择的 MME2 )发起 TAU流程, 将 MME2注册到 HSS中, 并获 取 MME2分配的临时标识 GUTI。 相应地, 由于终端 UE获取了 MME2分 配的临时标识 GUTI , 参见图 5 , 当终端 UE发起服务请求时 , 终端 UE根 据获取的新的标识 GUTI , 推导出 GUMMEI ( MME2 的标识) 上才艮到 eNodeBl, eNodeBl根据 GUMMEI选择 MM2,并将服务请求转发到 MME2 中, 由于 MM2中已经获取了 UE的相关信息, 于是回复服务接受, 终端 UE便可以执行正常业务。
综上所述, 本发明实施例提供了一种网络间切换过程中位置区更新的 方法, 参见图 6, 提供了该方法的信息交互示意图, 如图所示, ISR激活 后的终端 UE, 执行 RAT间切换伴随着 TAU/RAU的流程。 通过终端 UE 感知接入技术改变后, 主动发起 TAU/RAU的流程, 既确保目标移动性管 理网元在 HSS注册并获得签约数据,又确保了终端 UE获取到目标网络移 动性管理网元为 UE 分配新的临时标识 (P-TMSI/GUTI), 从而有效地保证 了后续终端 UE进行正常的业务。
实施例 2
参见图 7和图 8, 本发明实施例提供了一种网络间切换的方法, 该方 法内容如下:
步骤 201:源网络移动性管理网元获取到源网络元发送的切换请求后, 向源服务网关发送消息, 该消息用于获取与该源网络移动性管理网元建立 了 ISR的移动性管理网元信息, 比如地址 /TEID(Tunnel Endpoint Identity, 隧道端点标识)等信息, 本实施例以地址信息为例。 具体内容如下:
1.源网络接入网网元决定触发切换。
2.源网络接入网网元发送切换请求消息给源网络移动性管理网元, 要 求开始切换。
3.源网络移动性管理网元收到切换请求消息后, 如果当前网络激活了 ISR, 源网络移动性管理网元向 Serving GW发送上下文请求消息, 获取和 源网络移动性管理网元建立 ISR的移动性管理网元地址。 其中, 本实施例 以源网络移动性管理网元激活了 ISR为例, 其中上述移动性管理网元地址 信息用于, 源网络移动性管理网元选择与其建立 ISR的移动性管理网元。 目标移动性管理网元根据源侧传递的地址决定是否激活 ISR并与之交互。
步骤 202: 源服务网关向源网络移动性管理网元返回消息, 该消息中 携带该源网络移动性管理网元建立了 ISR的移动性管理网元地址信息。即:
4. 如果激活了 ISR, Serving GW向源网络发送上下文响应消息, 返 回和源网络移动性管理网元建立 ISR的移动性管理网元地址。
例如, 以图 3为例, 由于源网络移动性管理网元 SGSN和源网络移动 性管理网元 MME1建立 ISR, 源 SGSN在收到源网络接入网网元 RNC的 切换请求后, 向源服务网关 Serving GW发送消息, 获取 MME 1的信息, 包括 MME1 IP地址等信息。
步骤 203: 源网络移动性管理网元获取根据源网络元发送的目标网络 元标识获取目标网络的移动性管理网元信息。
步骤 204: 源网络移动性管理网元判断步骤 202中获取的建立了 ISR 的移动性管理网元是否在步骤 203中获取的目标网络的移动性管理网元列 表中, 如果是, 执行步骤 205; 否则, 执行步骤 206。
步骤 205: 选择建立了 ISR的移动性管理网元作为目标移动性管理网 元, 然后执行步骤 207。
步骤 206: 从获取的目标网络的移动性管理网元列表选择出目标移动 性管理网元, 然后执行步骤 207。
步骤 207: 源网络移动性管理网元向选择出的目标移动性管理网元发 送前向切换请求, 该前向切换请求中携带终端 UE的相关信息, 如用户的 移动性管理上下文和用户面承载上下文信息, 终端 UE完成由源网络到目 标网络的切换。 上述步骤 203至 207的具体内容如下:
5. 源网络移动性管理网元,根据源网络接入网网元发送的目标网络元 标识查询目标网络移动性管理网元, 如果和源网络移动性管理网元建立 ISR的移动性管理网元也在目标网络移动性管理网元列表中, 则源网络移 动性管理网元应该选择和其建立 ISR管理的移动性管理网元 (MME1,参考 图 3), 并发送前向切换请求消息, 消息中包含用户的移动性管理上下文和 用户面承载上下文信息。
6. 目标网络移动性管理网元决定当前的 Source Serving GW是否能继 续服务于 UE, 如果不行, 就重新选择一个新的 Serving GW, 即 Target Serving GW。 目标网络移动性管理网元控制目标网络为切换用户分配相应 的承载资源和数据转发资源。
7. 目标网络移动性管理网元返回前向切换响应消息给源网络移动性 管理网元。
如果数据转发采用非直接数据转发, 源网络移动性管理网元同 Source Serving GW交互, 构建非直接数据转发通道。 具体为:
8a、 源网络移动性管理网元向 Source Serving GW发送创建承载请求消息。 8b, Source Serving GW向源网络移动性管理网元发送创建承载响应消息。
9. 源网络移动性管理网元向源网 入网网元发送切换命令, 以命令源网络 接入网网元开始切换。
10. 源网 妻入网网元向 UE发送切换命令, 通知 UE开始切换。
11. 源网 入网网元开始转发数据到目标网络。
12. UE成功接入目标网络。
13. 目标网络接入网网元确认 UE接入, 发送切换通知给目标网络的 移动性管理网元。
14a. 目标网络移动性管理网元发送前向切换完成消息通知源网络移 动性管理网元。
14b. 源网络移动性管理网元返回前向切换完成确认消息给目标网络 移动性管理网元。
15. 目标网络移动性管理网元发送更新承载请求消息给 Target Serving GW , 更新用户面承载信息。
Target Serving GW可能发起更新承载过程, 更新 PDN GW上承载信 息, 比如用户的网络类型等。 具体为:
16a、 Target Serving GW向 PDN GW发送更新承载请求消息。
16b、 PDN GW向 Target Serving GW发送更新承载确认消息。
17. Target Serving GW返回更新承载响应消息给目标网络移动性管理 网元。 承载响应消息中可以携带 ISR指示, 表示 ISR激活成功。 或者不携 带任何指示, 目标移动性管理网元收到更新承载响应消息后,认为 ISR激活。
综上所述, 由于终端 UE仍处于原来的位置区(RA或者 TA)内, UE不 向目标移动性管理网元发起跟踪 /路由区更新流程 TAU/RAU。
进一步地, 本领域技术人员可以获知建立 ISR管理的移动性管理网元 通常为一对一的关系, 但是进一步地, 建立 ISR移动性管理网元为一对多 的关系时, 参见表 1 , 为当与该源网络移动性管理网元建立 ISR的移动性 管理网元的个数为多个时,根据服务网关返回建立 ISR的移动性管理网元 地址的列表; 相应地, 参见表 2, 为源网络移动性管理网元 居源侧网络 元发送的目标网络元标识查询的目标网络的移动性管理网元列表。
表 1
Figure imgf000020_0001
SGSN1 MME3
SGSN1 SGSN2
表 2
Figure imgf000021_0001
此时, 源网络移动性管理网元根据表 1和表 2, 获取交集 { MME1 , MME3 }后, 根据自身制定的选择策略从该交集中选择出一个作为目标移 动性管理网元, 其中该选择策略可以采用根据网元的负载情况采用负载均 衡策略的方式, 也可以采用根据物理地址远近的方式, 本发明实施例不限 制具体的选择方式和方法。
综上所述, 本发明实施例提供了一种网络间切换的方法, 参见图 8 , 提供了该方法的信息交互示意图, 通过源网络移动性管理网元从 Serving GW获取建立 ISR管理的另一移动性管理网元的地址。并选择和其建立 ISR 的移动性管理网元作为切换的目标移动性管理网元, 如此可以保证 UE已 经在目标移动性管理网元注册, 避免 UE在切换完成后发生 TAU/RAU流 程的同时, 有效地保证了后续终端 UE进行正常的业务。
实施例 3
参见图 9和图 10, 本发明实施例提供了一种网络间切换的方法, 与实施 例 2的区别在于,本实施例以源网络移动性管理网元自身保存了和其建立 ISR 的移动性管理网元信息。 为了便于说明, 本实施例以与该源网络移动性管 理网元建立了 ISR的移动管理网元只有一个为例进行说明 ,具体内容如下: 步骤 301 : 源接入网移动性管理网元获取到源接入网网元发送的切换 请求, 根据该切换请求中携带的目标接入网网元标识获取目标网络的移动 性管理网元列表。
步骤 302: 源移动性管理网元判断自身预存的建立了 ISR的移动管理 网元是否在上述获取的移动性管理网元列表中, 如果是, 执行步骤 303 ; 否则, 执行步骤 304。
步骤 303 : 选择该建立了 ISR的移动管理网元作为目标网元, 然后执 行步骤 305。
步骤 304: 从目标网络的移动性管理网元列表中选择一个移动性管理 网元作为目标网元, 然后执行步骤 305。
步骤 305: 源网络移动性管理网元向选择出的目标移动性管理网元发 送前向切换请求, 该前向切换请求中携带终端 UE的相关信息, 如用户的 移动性管理上下文和用户面承载上下文信息; 终端 UE完成由源接入网到 目标接入网的切换。
其中, 上述步骤 301至步骤 305具体内容如下:
1、 源网络接入网网元决定发起切换。
2、 源网络接入网网元发送切换请求消息给源网络移动性管理网元, 要求开始切换, 并指示需要数据转发的承载上下文。
3、 源网络移动性管理网元, 根据源网络接入网网元发送的目标接入 网网元标识查询目标网络的移动性管理网元, 如果 UE激活了 ISR且和源 网络移动性管理网元建立 ISR的移动性管理网元也在目标网络移动性管理 网元列表中, 则源网络移动性管理网元应该选择和其建立 ISR管理的移动 性管理网元(参考图 2, SGSN选择与其建立了 ISR的 MME1), 并发送前 向切换请求, 该前向切换请求中包含用户的移动性管理上下文和用户面承 载上下文信息。
4、 目标网络移动性管理网元决定当前的 Source Serving GW是否能继 续服务于 UE, 如果不行, 就重新选择一个新的 Serving GW, 即 Target Serving GW。 目标网络移动性管理网元控制目标网络为切换用户分配相应 的承载资源和数据转发资源。
5、 目标网络移动性管理网元返回前向切换响应消息给源网络移动性 管理网元。
如果数据转发采用非直接数据转发, 源网络移动性管理网元同 Source Serving GW交互, 构建非直接数据转发通道。
6a、 源网络移动性管理网元向 Source Serving GW发送创建承载请求消息。 6b, Source Serving GW向源网络移动性管理网元发送创建承载响应消息。
7、 源网络移动性管理网元向源网络接入网网元发送切换命令, 以命令 源网 妻入网网元开始切换。
8、 源网 妻入网网元向 UE发送切换命令, 通知 UE开始切换。
9、 源网络接入网网元开始转发数据到目标网络。
10、 UE成功接入目标接入网络, 出现于目标网络下。
11、 目标网络接入网网元确认 UE接入, 发送切换通知给目标网络的 移动性管理网元。 12a、 目标网络移动性管理网元发送前向切换完成消息通知源网络移 动性管理网元。
12b、 源网络移动性管理网元返回前向切换完成确认消息给目标网络 移动性管理网元。
13、目标网络移动性管理网元发送更新承载请求消息给 Target Serving
GW, 更新用户面承载信息。
Target Serving GW可能发起更新承载过程, 更新 PDN GW上承载信 息, 比如用户的接入网类型等。 具体为:
14a、 Target Serving GW向 PDN GW发送更新承载请求消息。
14b、 PDN GW向 Target Serving GW发送更新承载确认消息。
15、 Target Serving GW返回更新承载响应消息给目标网络移动性管 理网元。
综上所述, 本发明实施例提供了一种网络间切换的方法, 参见图 10, 提供了该方法的信息交互示意图, 通过激活 ISR的移动性管理网元双方互 相保存地址, 源移动性管理网元选择和其建立 ISR的移动性管理网元作为 目标网元个, 保证终端 UE已经在目标移动性管理网元注册, 这样避免了 UE在切换完成后发生 TAU/RAU流程。
另外, 上述实施例 2中涉及到的源网络移动性管理网元通过向服务网 关 Serving GW获取和其建立 ISR的移动性管理网元信息, 实施例 3中涉 及到的源网络移动性管理网元自身保存了和其建立 ISR的移动性管理网元 信息, 关于源网络移动性管理网元如何获取和其建立 ISR的移动性管理网 元信息的问题, 本发明实施例还提供了一种建立 ISR的方法, 请参见实施 例 4的详细说明:
实施例 4
参见图 11 , 本实施例提供了一种建立 ISR 的方法, 针对上述实施 2 和实施例 3中, 涉及到的源网络移动性管理网元如何获取到其建立 ISR的 移动性管理网元信息进行说明, 主要解决: 如何在 ISR建立 /保持时, 建立 ISR的两个移动性管理网元通过 Serving GW互相保存地址问题以及如何 通过 Serving GW激活 ISR的问题。 具体内容如下:
1.终端 UE 发起 TAU/RAU 请求到目标网络移动性管理网元 ( 目标 SGSN ) 。
2.目标网络同 RAT移动性管理网元 (目标 SGSN ) 向源网络同 RAT 移动性管理网元 (源 SGSN )发送上下文请求 Context Request 消息请求 UE上下文。
其中, 所谓同 RAT(Radio Access Technique, 无线接入技术)移动性管 理网元是指:采用相同接入技术的移动性管理网元,例如 MME相对 MME 而言为同 RAT移动性管理网元, 因为都是通过 E-URTAN接入。 SGSN相 对 SGSN也是同 RAT移动性管理网元,都是通过 GERAN/UTRAN接入的。 但是 SGSN相对 MME (或者 MME相对 SGSN)而言是异(不同) RAT接入, 因为其接入技术不同, MME 是通过 E-UTRAN 接入而 SGSN 通过 UTRAN/GERAN接入。
3.源网络同 RAT移动性管理网元 (源 SGSN ) 向目标网络同 RAT移 动性管理网元 (目标 SGSN )发送上下文响应 Context Response消息。 如 果源网络激活了 ISR, 源网络同 RAT移动性管理网元(源 SGSN )在该上 下文响应 Context Response消息中携带源网络异 RAT移动性管理网元(源 MME )信息 , 如 IP地址 /TEID等。
4、 目标网络同 RAT移动性管理网元(目标 SGSN ) 向源网络同 RAT 移动性管理网元 (源 SGSN )发送上下文确认 Context Acknowledge消息。 伴见下文 Option 1、 Option2、 Option3:
O tionl :
a、 目标网络决定激活 ISR, 并向源网络异 RAT移动性管理网元 (源 MME )发送 ISR Indication消息, 消息中有目标网络移动性管理网元 (目 标 SGSN ) 的信息 (IP/TEID等)。
b、 收到消息后, 如果同意激活 ISR, 源网络异 RAT移动性管理网元 (源 MME )保存目标网络移动性管理网元(目标 SGSN )的信息 (IP/TEID 等), 并发送确认消息。
O tion2:
a、 目标网络决定激活 ISR, 向源网络异 RAT 移动性管理网元 (源 MME )发送上下文请求 Context Request消息,该消息中携带 ISR指示 ISR Indication, 用于指示目标网络利用该消息请求激活 ISR。
b、 收到消息后源网络异 RAT移动性管理网元 (源 MME )返回上下 文响应 Context Response消息, 该消息中携带自身信息(IP/TEID,为 UE分 配的路由区等)。
c、 目标网络决定激活 ISR, 返回上下文确认 Context Ack消息, 该消 息中携带 ISR指示用于激活 ISR。
Option3: 如果目标网络决定激活 ISR, 步骤 5中更新承载请求消息中携带 ISR 指示, 进一步的还可以携带目标移动性管理网元 IP地址以及控制面 TEID 等信息, 用于和源网络异 RAT移动性管理网元交互, 该信息可以和分配 给 Serving GW的 IP地址和控制面 TEID—致。(1)目标移动性管理网元(目 标 SGSN ) 支持 ISR的能力, 或; (2)目标移动性管理网元 (目标 SGSN ) 激活 ISR请求。
a、服务网关 Serving GW向源网络异 RAT移动性管理网元(源 MME ) 发送 ISR指示 ISR Indication消息,该消息中携带目标移动性管理网元(目 标 SGSN )信息(IP/TEID等)。 或者服务网关 Serving GW向源网络异 RAT 移动性管理网元发送 Update Bearer Request消息, 消息中携带目标移动性 管理网元信息, 信息中包括目标移动性管理网元 IP地址 /控制面 TEID等 信息。 更进一步, 服务网关可以在消息中携带 ISR激活指示通知源网络异 RAT移动性管理网元激活 ISR。
b、 源网络异 RAT移动性管理网元 (源 MME )保存目标网络移动性 管理网元 (目标 SGSN )信息 (IP/TEID等)并发送 ISR确认 ISR Ack消息, 确认 ISR激活,或者源网络异 RAT移动性管理网元向服务网关 Serving GW 返回 Update Bearer Response消息 , 确认 ISR激活。
O tion4: (图中未示出 )
进一步地, 当激活 ISR的双方不需要互相保存地址时, 执行 RAT内 切换时维持 ISR的情况下:
a、 目标网络移动性管理网元(目标 SGSN)向服务网关 Serving GW发 送消息, 消息中携带 ISR 指示, 该指示可以包含但不限于以下含义: (1) 目标移动性管理网元(目标 SGSN ) 支持 ISR的能力, 或; (2)目标移动性 管理网元 (目标 SGSN ) 激活 ISR请求。
5、 目标网络移动性管理网元 (目标 SGSN ) 向月良务网关 Serving GW 发送更新承载请求消息。 如果目标网络决定激活 ISR, 该更新承载请求消 息中携带 ISR指示, 通知 Serving GW激活 ISR。
ISR指示可以是目标网络移动性管理网元支持 ISR的能力,也可以是目 标移动性管理网元决定激活 ISR的指示。
6、 Serving GW发送承载更新响应消息。
相应于 Option4: 收到承载更新请求后, Serving GW判断是否可以激 活 ISR, 如果可以 Serving GW在更新承载响应 Update Bearer Response中 携带 ISR指示, 通知目标移动性管理网元 (目标 SGSN )是否激活了 ISR。
7、 目标网络移动性管理网元和 HSS交互进行位置更新并获取签约数据。
8、 目标网络移动性管理网元向终端 UE发送 TAU/RAU Accept消息 , 该消息中指示激活了 ISR。
9、 终端 UE向目标网络移动性管理网元发送 TAU/RAU Complete消 息。
其中, 为了便于说明, 我们将网元之间建立 ISR, 统一称为建立 ISR。 并将移动性管理网元通知月良务网关 Serving GW激活 ISR,称为通知 Serving GW建立 ISR,同样,目标移动性管理网元通知源移动性管理网元激活 ISR, 称为目标移动性管理网元通知源移动性管理网元建立 ISR, 以上定义只是 为了便于我们进行描述方便, 各动作的实际意义并未改变。
本发明实施例提供的建立 ISR的方法, 成功实现了目标网络移动性管 理网元和源网络异 RAT移动性管理网元建立 ISR,以及当双方需要互相保 存对方地址信息时, 同样能够实现互相保存对方地址信息的目的。
实施例 5
图 12是本发明实施例 5提供的建立 ISR的交互示意图。 参见图 12, 提供了一种建立 ISR的方法, 主要解决如何在 ISR建立 /保持时, 建立 ISR 的两个移动性管理网元通过 Serving GW互相保存地址的问题, 详见下文:
1、 源网络接入网网元决定触发切换。
2、 源网络接入网网元发送切换请求消息给源网络移动性管理网元, 要求开始切换, 并指示需要数据转发的承载上下文。
3、 源网络移动性管理网元, 根据源侧网络元发送的目标网络元标识 选择目标网络的移动性管理网元, 发送前向切换请求消息, 消息中包含用 户的移动性管理上下文和用户面承载上下文信息。如果激活 ISR的两个移 动性管理网元互相保存对方地址, 则源网络同 RAT移动性管理网元将源 网络异 RAT移动性管理网元的地址传递到目标网络移动性管理网元。
4、 目标网络移动性管理网元决定当前的 Source Serving GW是否能继 续服务于 UE, 如果不行, 就重新选择一个新的 Serving GW, 即 Target Serving GW。 目标网络移动性管理网元控制目标网络为切换用户分配相应 的承载资源和数据转发资源。
5、 目标网络移动性管理网元返回前向切换响应消息给源网络移动性 管理网元。
如果数据转发采用非直接数据转发, 源网络移动性管理网元同 Source Serving GW交互, 构建非直接数据转发通道。 具体为: 6a、 源网络移动性管理网元向 Source Serving GW发送创建承载请求消息。 6b, Source Serving GW向源网络移动性管理网元发送创建承载响应消息。
7、 源网络移动性管理网元向源网络接入网网元发送切换命令, 以命令 源网 妻入网网元开始切换。
8、 源网 妻入网网元向 UE发送切换命令, 通知 UE开始切换。
9、 源网 入网网元开始转发数据到目标网络。
10、 UE成功接入目标网络。
11、 目标网络网络确证 UE接入 , 发送切换通知给目标网络的移动性 管理网元。
12a、 目标网络移动性管理网元发送前向切换完成消息通知源网络移 动性管理网元。
12b、 源网络移动性管理网元返回前向切换完成确认消息给目标网络 移动性管理网元。
13、目标网络移动性管理网元发送更新承载请求消息给 Target Serving GW, 更新用户面承载信息, 该消息中携带 ISR指示, 该指示可以包含但 不限于以下含义:
(1).目标网络移动性管理网元的 ISR能力; 或, (2).目标网络移动性管 理网元希望激活 ISR。
Target Serving GW可能发起更新承载过程, 更新 PDN GW上承载信 息, 比如用户的网络类型等。 具体为:
14a、 Target Serving GW向 PDN GW发送更新承载请求消息。
14b、 PDN GW向 Target Serving GW发送更新承载确认消息。 如果 Serving GW 没有发生改变(即 Source Serving GW 和 Target Serving GW为同一个)。 Serving GW收到目标网络移动性管理网元的 ISR 指示, Serving GW可以:
(1) Serving GW向源网络异 RAT移动性管理网元发送消息,消息中携 带 ISR指示, 目标移动性管理网元信息 (IP/TEDI等)。 消息可以是以下几 条但不限于以下消息: (1)是专门的 ISR Indication 消息; (2)借用现在的 Update Bearer Request消息。 收到消息后源网络异 RAT移动性管理网元发 送消息进行响应或者确认。 或者,
(2) Serving GW在收到目标移动管理网元 ISR指示后, 判断是否可以 激活 ISR, 在步骤 16中返回 ISR是否激活指示。 具体地,
15a、 Target Serving GW向 Source Serving GW发送 ISR指示或更新承 载响应消息。
15b、 Source Serving GW向 Target Serving GW发送 ISR指示或更新承 载确认消息。
16、 Target Serving GW返回更新承载响应消息给目标网络移动性管理 网元。 消息中可以携带包含 ISR激活指示 (ISR Indication), 比如 UE在源 网络中已经激活的 ISR, 此时 Serving GW判断可以激活 ISR。
17、 如果当前的接入技术发生改变, UE处于 ECM-CONNECTED状 态, UE向目标移动性管理网元发起跟踪 /路由区更新流程。
18、 目标网络移动性管理网元可能根据配置, 发起安全流程。
19、 目标网络移动性管理网元发起到 HSS的更新位置请求消息,将自 己 i己 HSS„ 20a, HSS向目标网络移动性管理网元发送插入签约数据。
20b、目标网络移动性管理网元根据签约数据验证 UE是否可以在当前 位置接入, 并根据结果向 HSS发送插入签约数据确认消息。 如果 UE可以 接入, 目标网络移动性管理网元构造 UE上下文。
21、 HSS向目标网络移动管理网元发送位置更新确认消息。
11、 目标网络移动性管理网元向终端 UE发送接受跟踪 /路由区更新接 受消息。
23、终端 UE向目标网络移动性管理网元发送跟踪 /路由区更新完成消 息。
本发明实施例提供的建立 ISR的方法, 成功实现了目标网络移动性管 理网元和源网络异 RAT移动性管理网元建立 ISR,以及当双方需要互相保 存对方地址信息时, 同样能够实现互相保存对方地址信息的目的。
本发明实施例提供的建立 ISR的方法, 成功实现了目标网络移动性管 理网元和源网络异 RAT移动性管理网元建立 ISR,以及互相保存对方地址 信息, 并且, 通过终端 UE感知接入技术改变后, 主动发起 TAU/RAU的 流程, 既确保目标移动性管理网元在 HSS注册并获得签约数据, 又确保了 终端 UE 获取到目标网络移动性管理网元为 UE 分配新的临时标识 (P-TMSI/GUTI) , 从而有效地保证了后续终端 UE进行正常的业务。
实施例 6
与实施例 1对应, 参见图 13 , 本发明实施例提供了一种终端设备, 该 设备包括:
判断模块, 用于判断是否满足位置区更新流程的发起条件; 其中位置 区更新流程的发起条件包括: 终端的接入技术发生改变;
处理模块, 用于当判断模块的判断结果为是, 向目标网络中的移动性 管理网元发起位置区更新流程。
综上, 本发明实施例提供的终端设备, 通过该终端设备感知接入技术 改变后, 主动发起 TAU/RAU的流程, 既确保目标移动性管理网元在 HSS 注册并获得签约数据, 又确保了终端设备获取到目标网络移动性管理网元 为 UE 分配新的临时标识 (P-TMSI/GUTI), 从而有效地保证了后续终端设 备进行正常的业务。
实施例 7
与实施例 2和 3对应, 参见图 14, 本发明实施例提供了一种网络间切 换的系统, 系统包括: 源网络移动性管理网元、 目标移动性管理网元; 目 标移动性管理网元为与源网络移动性管理网元建立了 ISR且在目标网络的 移动性管理网元列表中; 其中,
源网络移动性管理网元, 用于获取与自身建立 ISR的移动性管理网元 列表信息以及目标网络的移动性管理网元列表信息; 根据建立 ISR的移动 性管理网元列表信息以及目标网络的移动性管理网元列表信息, 选择目标 网络中的与源网络移动性管理网元建立 ISR的移动性管理网元作为目标移 动性管理网元; 还用于向选择的目标移动性管理网元发送切换请求, 完成 终端由源网络到目标网络的切换;
目标移动性管理网元, 用于接收源网络移动性管理网元发送的切换请 求, 完成终端由源网络到目标网络的切换。
进一步地, 与实施例 3提供的网络间切换的方法对应, 系统还包括: 服务网关;
源网络移动性管理网元, 还用于向服务网关发送获取请求后, 获取服 务网关返回的与源网络移动性管理网元建立 ISR的移动性管理网元列表信 息;
相应地,服务网关,用于接收源网络移动性管理网元发送的获取请求, 返回与源网络移动性管理网元建立 ISR的移动性管理网元列表信息。
综上, 本发明实施例提供的网络间切换的系统, 通过源网络移动性管 理网元选择和其建立 ISR的移动性管理网元作为切换的目标网元, 如此可 以保证终端已经在目标移动性管理网元注册, 避免终端在切换完成后发生 TAU/RAU流程的同时, 有效地保证了后续终端进行正常的业务。
实施例 8
与实施例 2对应, 参见图 15 , 本发明实施例提供了一种移动性管理网 元, 该移动性管理网元包括:
获取模块, 用于获取与自身建立 ISR的移动性管理网元列表信息以及 目标网络的移动性管理网元列表信息;
选择模块, 用于根据获取模块获取的建立 ISR的移动性管理网元列表 信息以及目标网络的移动性管理网元列表信息, 选择目标网络中的与源网 络移动性管理网元建立 ISR的移动性管理网元作为目标移动性管理网元; 切换模块, 用于向选择模块选择的目标移动性管理网元发送切换请 求, 完成终端由源网络到目标网络的切换。
其中, 选择模块具体包括:
第一选择单元, 用于根据获取模块获取的建立 ISR的移动性管理网元 列表信息以及目标网络的移动性管理网元列表信息, 选择交集网元; 当交 集网元个数为一个时, 交集网元为目标移动性管理网元;
第二选择单元, 用于根据获取模块获取的建立 ISR的移动性管理网元 列表信息以及目标网络的移动性管理网元列表信息, 选择交集网元; 当交 集网元个数为多个时, 根据选择策略, 从多个交集网元中选择出一个作为 目标移动性管理网元。
综上所述, 本发明实施例提供的移动性管理网元, 通过源网络移动性 管理网元选择和其建立 ISR的移动性管理网元作为切换的目标网元, 如此 可以保证终端已经在目标移动性管理网元注册, 避免终端在切换完成后发 生 TAU/RAU流程的同时, 有效地保证了后续终端进行正常的业务。
实施例 9
参见图 16, 与实施例 4和实施例 5对应, 本发明实施例提供了一种建 立 ISR的系统, 系统包括; 目标网络移动性管理网元、 源网络同 RAT移 动移动性管理网元为源网络中与目标网络移动性管理网元同无线接入类 型 RAT移动性管理网元, 源网络中异 RAT移动性管理网元为源网络中与 目标网络移动性管理网元异无线接入类型 RAT移动性管理网元;
源网络同 RAT移动移动性管理网元, 用于接收目标网络移动性管理 网元发送的上下文请求后, 返回上下文响应;
源网络异 RAT移动性管理网元, 用于与目标网络移动性管理网元建 立 ISR。
目标网络移动性管理网元包括:
发送及接收模块, 用于向源网络中与目标网络移动性管理网元同无线 接入类型 RAT移动性管理网元发送上下文请求;还用于接收源网络同 RAT 移动移动性管理网元返回的上下文响应, 上下文响应中携带与源网络同 RAT移动移动性管理网元建立 I SR的源网络中异 RAT移动性管理网元的 信息;
第一建立模块, 用于根据发送及接收模块获取的源网络中异 RAT移 动性管理网元的信息, 与源网络中异 RAT移动性管理网元建立 ISR; 源网络中异 RAT移动性管理网元包括:
第二建立模块, 用于与目标网络移动性管理网元建立 ISR。
第一建立模块具体为:
第一处理单元, 用于向源网络异 RAT移动性管理网元发送消息, 消 息中携带有目标网络移动性管理网元的信息以及 ISR指示信息;
相应地, 第二建立模块具体为:
第二处理单元, 用于收到第一处理单元发送的消息后, 返回响应或者 确认消息。
第一建立模块具体为:
第三处理单元, 用于向源网络异 RAT移动性管理网元发送消息, 消 息中携带 ISR指示信息以及目标网络移动性管理网元的信息, ISR指示信 息至少包含目标网络移动性管理网元支持 ISR的能力、 目标网络移动性管 理网元激活 ISR的指示信息之一;
相应地, 第二建立模块具体为:
第四处理单元, 用于收到第三处理单元发送的消息后, 返回携带源网 络异 RAT移动性管理网元的信息的响应消息。 系统还包括服务网关,
服务网关, 用于接收目标网络移动性管理网元发送的更新承载请求, 向源网络异 RAT移动性管理网元发送消息; 消息中携带 ISR相关信息; 相应地, 目标网络移动性管理网元的第一建立模块具体为:
第五处理单元, 用于向服务网关发送更新承载请求, 更新承载请求中 携带 ISR指示信息;
相应地, 源网络异 RAT移动性管理网元的第二建立模块具体为: 第六处理单元, 用于接收服务网关发送的消息, 保存目标网络移动性 管理网元信息, 并向服务网关返回确认建立 ISR消息。
系统还包括服务网关,
服务网关, 用于接收目标网络移动管理网元发送的更新承载请求; 请 求中携带 ISR指示信息, 向源网络异 RAT移动性管理网元发送消息, 消息 中携带 ISR相关信息; 并向目标网络移动管理网元返回消息,返回的消息中 携带是否激活 ISR的指示。
相应地, 目标网络移动性管理网元的第一建立模块具体:
第七处理单元, 用于向服务网关发送更新承载请求; 请求中携带 ISR 指示信息, 接收服务网关返回的消息,返回的消息中携带是否激活 ISR的 指示;
相应地, 源网络异 RAT移动性管理网元的第二建立模块具体为: 第八处理单元, 用于接收服务网关发送的消息, 消息中携带 ISR相关 信息, 保存目标网络移动性管理网元信息, 并返回消息确认建立 ISR。
本发明实施例提供的建立 ISR的系统, 通过携带 ISR指示标识, 成功 实现了目标网络移动性管理网元和源网络异 RAT 移动性管理网元建立 ISR, 当欲建立 ISR的移动性管理网元需要互相保存对方信息时, 成功实 现双方互相保存对方信息的目的。
实施例 10
参见图 17, 与实施例 4和实施例 5对应, 本发明实施例提供了一种移 动性管理网元, 移动性管理网元网元包括:
发送及接收模块, 用于向源网络中与移动性管理网元同无线接入类型 RAT移动性管理网元发送上下文请求; 还用于接收源网络同 RAT移动移 动性管理网元返回的上下文响应, 上下文响应中携带与源网络同 RAT移 动移动性管理网元建立 I S R的源网络中异 R A T移动性管理网元的信息; 第一建立模块, 用于根据发送及接收模块获取的源网络中异 RAT移 动性管理网元的信息, 与源网络中异 RAT移动性管理网元建立 ISR。
其中, 第一建立模块具体为:
第一处理单元, 用于向源网络异 RAT移动性管理网元发送携带有目 标网络移动性管理网元的信息的请求消息, 请求消息用于指示源网络异 RAT移动性管理网元建立 ISR; 或,
第三处理单元, 用于向源网络异 RAT移动性管理网元发送消息, 消 息中携带 ISR指示信息以及目标网络移动性管理网元的信息, ISR指示信 息至少包含目标网络移动性管理网元支持 ISR的能力、 目标网络移动性管 理网元激活 ISR的指示信息之一; 或,
第五处理单元, 用于向服务网关发送更新承载请求, 更新承载请求中 携带 ISR指示信息; 或, 第七处理单元, 用于向服务网关发送更新承载请求; 请求中携带 ISR 指示信息, 接收服务网关返回的消息,返回的消息中携带是否激活 ISR的 指示。
进一步地, 移动性管理网元还包括:
第二建立模块, 用于根据 ISR指示标识, 与目标网络移动性管理网元 建立 ISR。
其中, 第二建立模块具体为:
第二处理单元, 用于收到目标网络移动性管理网元发送的 ISR指示消 息后, 保存目标网络移动性管理网元的信息, 并返回用于确认源网络异 RAT移动性管理网元建立 ISR的回复消息;或 ,
第四处理单元, 用于收到目标网络移动性管理网元发送的请求消息 后, 返回携带源网络异 RAT移动性管理网元的信息的响应消息; 或, 第六处理单元, 用于接收服务网关发送的消息, 保存目标网络移动性 管理网元信息, 并向服务网关返回确认建立 ISR消息; 或,
第八处理单元, 用于接收服务网关发送的消息, 消息中携带 ISR相关 信息, 保存目标网络移动性管理网元信息, 并返回消息确认建立 ISR。
本发明实施例提供的移动性管理网元, 通过携带 ISR指示标识, 成功 实现了目标网络移动性管理网元和源网络异 RAT 移动性管理网元建立 ISR, 当欲建立 ISR的移动性管理网元需要互相保存对方信息时, 成功实 现双方互相保存对方信息的目的。
实施例 11
参见图 18, 与实施例 4和实施例 5对应, 本发明实施例提供了一种建 立 ISR的系统, 当 UE从源网络移动到目标网络时, 系统包括: 目标网络 移动管理网元、 服务网关;
目标网络移动性管理网元, 用于向服务网关发送消息, 消息携带 ISR 指示信息, ISR指示信息为目标网络移动性管理网元支持 ISR的能力,或, 目标网络移动性管理网元激活 ISR的请求;
服务网关, 用于获取目标网络移动性管理网元发送的消息, 消息携带 ISR指示信息; 当 ISR指示信息为目标网络移动性管理网元支持 ISR的能 力时,返回响应消息;当 ISR指示信息为目标网络移动性管理网元激活 ISR 的请求时 , 判断可以激活 ISR后, 向目标网络移动管理网元返回消息,返回 的消息中携带信息通知目标网络移动性管理网元激活了 ISR。
本发明实施例提供的系统, 成功实现了发生 RAT 内移动时, 通过服 务网关保持 ISR的方法。
实施例 12
参见图 19, 与实施例 4和实施例 5对应, 本发明实施例提供了一种移 动性管理网元, 包括:
发送模块,用于向服务网关发送消息, 消息中携带 ISR指示信息, ISR 指示信息包含目标网络移动性管理网元支持 ISR的能力, 或, 目标网络移 动性管理网元激活 ISR的请求信息之一;
接收模块,用于接收服务网关返回的消息,当 ISR指示信息为目标网络 移动性管理网元激活 ISR的请求时,返回的消息中携带信息指示目标移动 性管理网元激活 ISR。
本发明实施例提供的移动性管理网元, 成功实现了发生 RAT 内移动 时, 通过服务网关保持 ISR的目的。
实施例 13
参见图 20, 与实施例 4和实施例 5对应, 本发明实施例提供了一种服 务网关, ISR服务网关包括:
接收模块, 用于接收目标网络移动性管理网元发送的消息; 消息携带 ISR指示信息
处理模块, 用于当接收模块接收的消息中携带的 ISR指示信息为目标 网络移动性管理网元支持 ISR的能力时, 返回响应消息; 当 ISR指示信息 为目标网络移动性管理网元激活 ISR的请求时, 判断可以激活 ISR后, 向 目标网络移动管理网元返回消息,返回的消息中携带信息通知目标网络移 动性管理网元激活了 ISR。
本发明实施例提供的服务网关, 成功实现了发生 RAT 内移动时, 通 过服务网关保持 ISR的方法。
本发明实施例中的部分步骤, 可以利用软件实现, 相应的软件程序可 以存储在可读取的存储介质中, 如光盘或硬盘等。
以上仅为本发明的具体实施例, 并不用以限制本发明, 对于本技术领 域的普通技术人员来说, 凡在不脱离本发明原理的前提下, 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。

Claims

权利要求
1、 一种网络间切换过程中位置区更新的方法, 其特征在于, 当目标 网络分配的位置区信息在终端设备预存的位置区信息列表中时, 所述方法 包括:
所述终端设备判断满足位置区更新流程的发起条件, 向所述目标网络 中的移动性管理网元发起位置区更新流程, 其中所述位置区更新流程的发 起条件包括: 所述终端的接入技术发生改变。
2、 一种网络间切换的方法, 其特征在于, 所述方法包括:
源网络移动性管理网元获取与自身建立 ISR的移动性管理网元列表信 , ¾以及目标网络的移动性管理网元列表信息;
根据所述与自身建立 I SR的移动性管理网元列表信息以及目标网络的 移动性管理网元列表信息, 选择目标网络中的与所述源网络移动性管理网 元建立 ISR的移动性管理网元作为目标移动性管理网元;
向所述选择的目标移动性管理网元发送前向切换请求, 完成终端由源 网络到目标网络的切换。
3、 如权利要求 2所述的方法, 其特征在于, 所述源网络移动性管理 网元获取与自身建立 ISR的移动性管理网元列表信息, 具体为:
源网络移动性管理网元从源网络服务网关获取与所述源网络移动性 管理网元建立 I S R的移动性管理网元列表信息; 或,
源网络移动性管理网元预存与自身建立 ISR的移动性管理网元列表信 息。
4、 如权利要求 2所述的方法, 其特征在于, 所述根据所述与自身建 立 ISR的移动性管理网元列表信息以及目标网络的移动性管理网元列表信 息, 选择目标网络中的与所述源网络移动性管理网元建立 ISR的移动性管 理网元作为目标移动性管理网元的步骤具体为:
获取所述建立 ISR的移动性管理网元列表信息以及目标网络的移动性 管理网元列表信息的交集网元, 当所述交集网元个数为一个时, 所述交集 网元为目标移动性管理网元; 当所述交集网元个数为多个时, 根据选择策 略, 从所述多个交集网元中选择出一个作为目标移动性管理网元。
5.—种建立 ISR的方法, 其特征在于, 当 UE从源网络移动到目标网 络时, 所述方法包括;
目标网络移动性管理网元向源网络中与所述目标网络移动性管理网 元同无线接入技术 RAT移动性管理网元发送上下文请求;
接收所述源网络同 RAT移动移动性管理网元返回的上下文响应, 所 述上下文响应中携带与所述源网络同 RAT 移动移动性管理网元已建立 ISR的源网络异 RAT移动性管理网元的信息;
根据获取的源网络异 RAT移动性管理网元的信息, 与所述源网络异 RAT移动性管理网元建立 ISR。
6、 如权利要求 5所述的建立 ISR的方法, 其特征在于, 所述根据获 取的源网络异 RAT移动性管理网元的信息, 与所述源网络异 RAT移动性 管理网元建立 ISR的步骤, 具体为:
目标网络移动性管理网元向源网络异 RAT移动性管理网元发送请求 消息, 所述请求消息中携带所述目标网络移动性管理网元的信息以及激活 ISR的指示信息。 所述源网络中异 RAT移动性管理网元收到所述请求消息后, 返回消 息确认或响应。
7、 如权利要求 5所述的建立 ISR的方法, 其特征在于, 所述根据获 取的源网络异 RAT移动性管理网元的信息, 与所述源网络异 RAT移动性 管理网元建立 ISR的步骤, 具体为:
目标网络移动性管理网元向源网络异 RAT移动性管理网元发送请求 消息, 所述请求消息中携带 ISR指示信息以及目标网络移动性管理网元的 信息; 所述 ISR指示信息包含目标网络移动性管理网元是否支持 ISR的能 力、 目标网络移动性管理网元决定激活 ISR的指示信息之一;
所述源网络异 RAT移动性管理网元收到所述消息后, 返回消息, 返 回的消息中携带所述源网络异 RAT移动性管理网元的信息;
所述目标网络移动性管理网元获取到所述源网络异 RAT移动性管理 网元的信息后, 向所述源网络异 RAT移动性管理网元发送确认消息。
8、 如权利要求 5所述的建立 ISR的方法, 其特征在于, 所述根据获 取的源网络异 RAT移动性管理网元的信息, 与所述源网络异 RAT移动性 管理网元建立 ISR的步骤, 具体为:
所述目标网络移动管理网元向服务网关发送请求, 所述请求中携带 ISR指示信息;
所述服务网关接收所述请求, 向所述源网络异 RAT移动性管理网元 发送消息, 所述消息中携带 ISR相关信息; 或,
目标网络移动管理网元向服务网关发送请求; 所述请求中携带 ISR指 示信息; 服务网关向所述源网络异 RAT移动性管理网元发送消息 , 所述消息中 携带 ISR相关信息; 并向所述目标网络移动管理网元返回消息,返回的消息 中携带是否激活 ISR的指示。
9、 如权利要求 8所述的方法, 其特征在于, 所述 ISR相关信息具体 为
目标网络移动性管理网元的信息; 或,
目标网络移动性管理网元的信息和 I S R激活指示。
10、 如权利要求 5所述的方法, 其特征在于, 所述移动性管理网元的 信息具体为
移动性管理网元的 IP地址信息; 或,
移动性管理网元的 IP地址信息和隧道端点标识 TEID信息。
11、 一种建立 ISR的方法, 其特征在于, 当 UE从源网络移动到目标 网络时, 所述方法包括;
服务网关获取目标网络移动性管理网元发送的消息, 所述消息携带 ISR指示信息; 当所述 ISR指示信息为目标网络移动性管理网元支持 ISR 的能力时, 所述服务网关返回响应消息;
当所述 ISR指示信息为所述目标网络移动性管理网元激活 ISR的请求 时, 所述服务网关判断可以激活 ISR后, 向所述目标网络移动管理网元返 回消息,返回的消息中携带信息通知所述目标网络移动性管理网元激活了 ISR。
12、 一种终端设备, 其特征在于, 所述设备包括:
判断模块, 用于判断是否满足位置区更新流程的发起条件; 其中所述 位置区更新流程的发起条件包括: 所述终端的接入技术发生改变; 处理模块, 用于当所述判断模块的判断结果为是, 向所述目标网络中 的移动性管理网元发起位置区更新流程。
13、 一种网络间切换的系统, 其特征在于, 所述系统包括: 源网络移 动性管理网元、 目标移动性管理网元; 目标移动性管理网元为与所述源网 络移动性管理网元建立了 ISR且在目标网络的移动性管理网元列表中; 所述源网络移动性管理网元, 用于获取与自身建立 ISR的移动性管理 网元列表信息以及目标网络的移动性管理网元列表信息; 根据所述建立 ISR 的移动性管理网元列表信息以及目标网络的移动性管理网元列表信 息, 选择目标网络中的与所述源网络移动性管理网元建立 ISR的移动性管 理网元作为目标移动性管理网元; 还用于向所述选择的目标移动性管理网 元发送切换请求, 完成终端由源网络到目标网络的切换;
所述目标移动性管理网元, 用于接收所述源网络移动性管理网元发送 的切换请求, 完成终端由源网络到目标网络的切换。
14、 如权利要求 13 所述的网络间切换的系统, 其特征在于, 所述系 统还包括: 服务网关;
所述源网络移动性管理网元, 还用于向所述服务网关发送获取请求 动性管理网元列表信息;
相应地, 所述服务网关, 用于接收所述源网络移动性管理网元发送的 获取请求,返回与所述源网络移动性管理网元建立 ISR的移动性管理网元 列表信息。
15、 一种移动性管理网元, 其特征在于, 所述网元包括: 获取模块, 用于获取与自身建立 ISR的移动性管理网元列表信息以及 目标网络的移动性管理网元列表信息;
选择模块, 用于根据所述获取模块获取的建立 ISR的移动性管理网元 列表信息以及目标网络的移动性管理网元列表信息, 选择目标网络中的与 所述源网络移动性管理网元建立 ISR的移动性管理网元作为目标移动性管 理网元;
切换模块, 用于向所述选择模块选择的目标移动性管理网元发送切换 请求, 完成终端由源网络到目标网络的切换。
16、 如权利要求 15 所述的移动性管理网元, 其特征在于, 所述选择 模块具体包括:
第一选择单元, 用于根据所述获取模块获取的建立 ISR的移动性管理 网元列表信息以及目标网络的移动性管理网元列表信息, 选择交集网元; 当所述交集网元个数为一个时, 所述交集网元为目标移动性管理网元; 第二选择单元, 用于根据所述获取模块获取的建立 ISR的移动性管理 网元列表信息以及目标网络的移动性管理网元列表信息, 选择交集网元; 当所述交集网元个数为多个时, 根据选择策略, 从所述多个交集网元中选 择出一个作为目标移动性管理网元。
17、 一种建立 ISR的系统, 其特征在于所述系统包括; 目标网络移动 性管理网元、 源网络同无线接入技术 RAT移动移动性管理网元为源网络 中与所述目标网络移动性管理网元同无线接入技术 RAT移动性管理网元, 源网络异 RAT移动性管理网元为源网络中与所述目标网络移动性管理网 元异 RAT移动性管理网元;
所述目标网络移动性管理网元, 用于向源网络中与所述目标网络移动 性管理网元同 RAT移动性管理网元发送上下文请求; 还用于接收源网络 同 RAT移动移动性管理网元返回的上下文响应, 所述上下文响应中携带 与所述源网络同 RAT移动移动性管理网元建立 ISR的源网络中异 RAT移 动性管理网元的信息; 还用于根据获取的源网络中异 RAT移动性管理网 元的信息, 与所述源网络中异 RAT移动性管理网元建立 ISR;
所述源网络同 RAT移动移动性管理网元, 用于接收所述目标网络移 动性管理网元发送的上下文请求后, 返回上下文响应;
所述源网络异 RAT移动性管理网元, 用于与所述目标网络移动性管 理网元建立 ISR。
18、 如权利要求 17 所述的系统, 其特征在于, 所述系统还包括服务 网关,
所述服务网关, 用于接收所述目标网络移动性管理网元发送的请求, 向所述源网络异 RAT移动性管理网元发送消息; 所述消息中携带 ISR相 关信息; 所述请求中携带 ISR指示信息;
相应地, 所述源网络异 RAT移动性管理网元还用于接收所述服务网 关发送的消息, 保存所述目标网络移动性管理网元信息, 并向所述服务网 关返回确认建立 ISR消息。
19、 如权利要求 17 所述的系统, 其特征在于, 所述系统还包括服务 网关,
所述服务网关, 用于接收所述目标网络移动管理网元发送的请求; 所 述请求中携带 ISR指示信息, 向所述源网络异 RAT移动性管理网元发送消 息, 所述消息中携带 ISR相关信息; 并向所述目标网络移动管理网元返回 消息,返回的消息中携带是否激活 ISR的指示; 求; 所述请求中携带 ISR指示信息, 接收所述服务网关返回的消息,所述 返回的消息中携带是否激活 ISR的指示;
相应地, 所述源网络异 RAT移动性管理网元还用于接收所述服务网 关发送的消息, 所述消息中携带 ISR相关信息, 保存所述目标网络移动性 管理网元信息, 并返回消息确认建立 ISR。
20、 一种移动性管理网元, 其特征在于, 所述网元包括:
发送及接收模块, 用于向源网络中与所述移动性管理网元同无线接入 类型 RAT移动性管理网元发送上下文请求; 还用于接收源网络同 RAT移 动移动性管理网元返回的上下文响应, 所述上下文响应中携带与所述源网 络同 RAT移动移动性管理网元建立 ISR的源网络中异 RAT移动性管理网 元的信息;
第一建立模块,用于根据所述发送及接收模块获取的源网络中异 RAT 移动性管理网元的信息, 与所述源网络中异 RAT 移动性管理网元建立 ISR。
21、 如权利要求 20所述的移动性管理网元, 其特征在于, 所述第一 建立模块具体为: 第一处理单元, 用于向源网络异 RAT移动性管理网元发送携带有所 述目标网络移动性管理网元的信息的请求消息, 所述请求消息用于指示源 网络异 RAT移动性管理网元建立 ISR; 或,
第三处理单元, 用于向源网络异 RAT移动性管理网元发送消息, 消 息中携带 ISR指示信息以及目标网络移动性管理网元的信息,所述 ISR指 示信息至少包含目标网络移动性管理网元支持 ISR的能力、 目标网络移动 性管理网元激活 ISR的指示信息之一; 或,
第五处理单元, 用于向服务网关发送请求, 所述请求中携带 ISR指示 信息; 或,
第七处理单元, 用于向所述服务网关发送请求; 所述请求中携带 ISR 指示信息, 接收所述服务网关返回的消息,所述返回的消息中携带是否激 活 ISR的指示。
22、 如权利要求 20所述的移动性管理网元, 其特征在于, 所述网元 还包括:
第二建立模块, 用于根据 ISR指示标识, 与目标网络移动性管理网元 的建立 ISR。
23、 如权利要求 22所述的移动性管理网元, 其特征在于, 所述第二 建立模块具体为:
第二处理单元, 用于收到所述目标网络移动性管理网元发送的所述 ISR指示消息后, 保存所述目标网络移动性管理网元的信息, 并返回用于 确认所述源网络异 RAT移动性管理网元建立 ISR的回复消息;或,
第四处理单元, 用于收到所述目标网络移动性管理网元发送的请求消 息后, 返回携带所述源网络异 RAT移动性管理网元的信息的响应消息; 或, 第六处理单元, 用于接收所述服务网关发送的消息, 保存所述目标网 络移动性管理网元信息, 并向所述服务网关返回确认建立 ISR消息; 或, 第八处理单元, 用于接收所述服务网关发送的消息, 所述消息中携带
ISR相关信息, 保存所述目标网络移动性管理网元信息, 并返回消息确认 建立 ISR。
24、 一种建立 ISR的系统, 其特征在于, 当 UE从源网络移动到目标 网络时所述系统包括: 目标网络移动管理网元、 服务网关;
所述目标网络移动性管理网元, 用于向所述服务网关发送消息, 所述 消息携带 ISR指示信息,所述 ISR指示信息为目标网络移动性管理网元支 持 ISR的能力, 或, 所述目标网络移动性管理网元激活 ISR的请求;
所述服务网关, 用于获取所述目标网络移动性管理网元发送的消息, 所述消息携带 I SR指示信息; 当所述 I SR指示信息为目标网络移动性管理 网元支持 ISR的能力时, 返回响应消息; 当所述 ISR指示信息为所述目标 网络移动性管理网元激活 ISR的请求时, 判断可以激活 ISR后, 向所述目 标网络移动管理网元返回消息,返回的消息中携带信息通知所述目标网络 移动性管理网元激活了 ISR。
25、 一种移动性管理网元, 其特征在于, 所述移动性管理网元包括: 发送模块,用于向所述服务网关发送消息,消息中携带 ISR指示信息, 所述 ISR指示信息包含目标网络移动性管理网元支持 ISR的能力, 或, 目 标网络移动性管理网元激活 ISR的请求信息之一;
接收模块,用于接收所述服务网关返回的消息,当所述 ISR指示信息为 目标网络移动性管理网元激活 ISR的请求时,返回的消息中携带信息指示 目标移动性管理网元激活 ISR。
26、 一种服务网关, 其特征在于, 所述服务网关包括:
接收模块, 用于接收目标网络移动性管理网元发送的消息; 所述消息 携带 ISR指示信息;
处理模块, 用于当接收模块接收的消息中携带的 ISR指示信息为目标 网络移动性管理网元支持 ISR的能力时, 返回响应消息; 当所述 ISR指示 信息为所述目标网络移动性管理网元激活 ISR 的请求时, 判断可以激活
ISR后, 向所述目标网络移动管理网元返回消息,返回的消息中携带信息通 知所述目标网络移动性管理网元激活了 ISR。
PCT/CN2009/072299 2008-06-16 2009-06-16 网络间切换、位置区更新、建立isr的方法和系统、设备 WO2009152760A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2008100996657A CN101610554B (zh) 2008-06-16 2008-06-16 网络间切换、位置区更新、建立isr的方法和系统、设备
CN200810099665.7 2008-06-16

Publications (1)

Publication Number Publication Date
WO2009152760A1 true WO2009152760A1 (zh) 2009-12-23

Family

ID=41433703

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2009/072299 WO2009152760A1 (zh) 2008-06-16 2009-06-16 网络间切换、位置区更新、建立isr的方法和系统、设备

Country Status (2)

Country Link
CN (1) CN101610554B (zh)
WO (1) WO2009152760A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100303012A1 (en) * 2009-04-01 2010-12-02 Roozbeh Atarius Fall Back Using Mobile Device Assisted Terminating Access Domain Selection

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102143539B (zh) * 2010-02-02 2015-04-01 中兴通讯股份有限公司 一种终端上下文的获取方法及系统
CN102271319B (zh) * 2010-06-02 2014-01-08 电信科学技术研究院 上报指示消息和上报Log信息的方法、系统及设备
CN105722154B (zh) * 2014-12-01 2019-09-27 南京中兴新软件有限责任公司 资源处理的优化方法及服务网关和优化系统
CN107360565B (zh) * 2016-05-09 2020-01-07 中国移动通信有限公司研究院 网关切换方法、控制面网元、网关、基站及网络架构
CN107809774B (zh) * 2016-08-29 2021-07-06 中兴通讯股份有限公司 一种网络侧位置区更新的方法、装置和节点
CN109413702A (zh) * 2017-08-16 2019-03-01 中国移动通信有限公司研究院 一种网络切换方法、装置及核心网
CN113613248B (zh) * 2020-04-20 2023-06-16 华为技术有限公司 认证事件处理方法及装置、系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1672454A (zh) * 2002-08-01 2005-09-21 西门子移动通讯公司 Gsm核心网络中用于gsm和3g收发基站的控制器及对gsm核心网络透明的、从3g小区到gsm小区的外部越区切换方法
CN101001442A (zh) * 2006-01-10 2007-07-18 华为技术有限公司 一种移动网络中越区切换方法及系统
CN101005692A (zh) * 2006-01-20 2007-07-25 北京三星通信技术研究有限公司 减少终端在lte和3g接入技术间切换的信令的方法
CN101094497A (zh) * 2006-01-06 2007-12-26 华为技术有限公司 移动用户在不同接入系统间切换的方法
CN101282582A (zh) * 2008-05-16 2008-10-08 中兴通讯股份有限公司 一种跨无线接入技术的切换方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1672454A (zh) * 2002-08-01 2005-09-21 西门子移动通讯公司 Gsm核心网络中用于gsm和3g收发基站的控制器及对gsm核心网络透明的、从3g小区到gsm小区的外部越区切换方法
CN101094497A (zh) * 2006-01-06 2007-12-26 华为技术有限公司 移动用户在不同接入系统间切换的方法
CN101001442A (zh) * 2006-01-10 2007-07-18 华为技术有限公司 一种移动网络中越区切换方法及系统
CN101005692A (zh) * 2006-01-20 2007-07-25 北京三星通信技术研究有限公司 减少终端在lte和3g接入技术间切换的信令的方法
CN101282582A (zh) * 2008-05-16 2008-10-08 中兴通讯股份有限公司 一种跨无线接入技术的切换方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100303012A1 (en) * 2009-04-01 2010-12-02 Roozbeh Atarius Fall Back Using Mobile Device Assisted Terminating Access Domain Selection
US8787362B2 (en) * 2009-04-01 2014-07-22 Qualcomm Incorporated Fall back using mobile device assisted terminating access domain selection

Also Published As

Publication number Publication date
CN101610554B (zh) 2012-04-25
CN101610554A (zh) 2009-12-23

Similar Documents

Publication Publication Date Title
US20190379611A1 (en) Method and system for transferring user equipment in mobile communication system
JP4950335B2 (ja) アイドルモードシグナリングリダクションのための方法およびシステム
KR101044685B1 (ko) 리소스를 구축하고 삭제하기 위한 방법 및 네트워크 장비
WO2009094916A1 (fr) Procédé, système et dispositif de commande pour redémarrage après défaillance dans le domaine circuit
US8582503B2 (en) Method for indicating the bearer management of a serving gateway
US20130010756A1 (en) Method and apparatus for supporting mobility of user equipment
WO2009152760A1 (zh) 网络间切换、位置区更新、建立isr的方法和系统、设备
JP5021772B2 (ja) トラッキングエリアの更新或いは切替プロセスにおいてリソースが誤ってリリースされることを防ぐ方法
WO2008138259A1 (fr) Procédé et système et dispositif pour un procédé d'enregistrement
US20110122845A1 (en) Moving user equipment without service interruption
WO2009097772A1 (zh) 一种资源释放控制方法及通讯系统以及相关设备
WO2007087745A1 (en) A method and system for implementing the data routing of the roaming user
WO2009129748A1 (zh) 网络选择方法、移动终端、ip地址处理方法及系统
WO2011098040A1 (zh) 回退到2g/3g网络的方法和相关设备及通信系统
WO2008128452A1 (fr) Procédé, système et nœud cn pour transfert de charge dans la zone commune
US20150223129A1 (en) Method for correctly establishing a local ip access service
WO2009132550A1 (zh) 一种切换方法及通讯系统以及相关设备
WO2014067474A1 (zh) 直接切换的方法和装置
WO2010031353A1 (zh) 服务请求的处理方法、装置及系统
WO2007109955A1 (fr) Procédé d'utilisation de l'adresse ip d'un utilisateur itinérant et terminal utilisateur destiné à cet effet
WO2011153750A1 (zh) 一种用户数据的同步方法和系统
WO2010108420A1 (zh) 通信业务切换处理方法、网络系统与互通功能实体
WO2010130207A1 (zh) 接入点名称约束信息的处理方法、系统及网元设备、网关设备
KR101659986B1 (ko) 메시지 송신 방법 및 범용 무선 패킷 서비스 지원 노드
WO2008154783A1 (fr) Procédé pour établir un tunnel à partir de sgsn vers la passerelle de service

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09765399

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09765399

Country of ref document: EP

Kind code of ref document: A1