CN105828399B - Tracking area updating method and device - Google Patents
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- CN105828399B CN105828399B CN201510002886.8A CN201510002886A CN105828399B CN 105828399 B CN105828399 B CN 105828399B CN 201510002886 A CN201510002886 A CN 201510002886A CN 105828399 B CN105828399 B CN 105828399B
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Abstract
The invention discloses a tracking area updating method, which comprises the following steps: when the terminal is switched from the 2G/3G network to the 4G network, the mobile management unit acquires the PDP context of the terminal after receiving the tracking area updating request message; judging whether the terminal has a PDP context or not to obtain a first judgment result; when the first judgment result shows that the terminal has no PDP context, the mobile management unit judges whether the terminal has a signed default APN or not to obtain a second judgment result; and when the second judgment result shows that the terminal has the signed default APN, the mobile management unit establishes a tracking area updating process of default load for the terminal by using the signed default APN. The invention also discloses a tracking area updating device.
Description
Technical Field
The present invention relates to the field of mobile data services, and in particular, to a tracking area updating method and apparatus.
Background
When the terminal moves from the coverage area of a second generation/third generation (2G/3G) network to the coverage area of a fourth generation (4G) network, a Tracking Area Update (TAU) flow to the 4G network is initiated. In the prior art, if the terminal is in an idle state during tracking area update, that is, the idle state is not a default bearer corresponding to an activated Packet Data Protocol (PDP), the tracking area update will fail and need to be reattached, which increases the network load and prolongs the duration of the signaling flow.
Disclosure of Invention
In view of this, embodiments of the present invention provide a tracking area update method and apparatus for solving at least one problem in the prior art, so as to avoid the problem of network load increase caused by a failure of tracking area update.
The technical scheme of the embodiment of the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a tracking area updating method, where the method includes:
when the terminal is switched from a 2G/3G network to a 4G network, after receiving a tracking area updating request message, a mobile management unit acquires a Packet Data Protocol (PDP) context of the terminal;
judging whether the terminal has a PDP context or not to obtain a first judgment result;
when the first judgment result shows that the terminal has no PDP context, the mobile management unit judges whether the terminal signs a contract for a default APN or not to obtain a second judgment result;
and when the second judgment result shows that the terminal has the signed default APN, the mobile management unit establishes a tracking area updating process of default load for the terminal by using the signed default APN.
In one embodiment of the invention, the method further comprises: and when the second judgment result shows that the terminal does not have the default APN signed with the contract, the mobile management unit refuses the terminal tracking area updating request.
In one embodiment of the invention, the method further comprises: and when the first judgment result shows that the terminal has the PDP context, the mobile management unit starts a tracking area updating process according to the PDP context.
In an embodiment of the present invention, the acquiring, by the mobility management unit, a PDP context of the terminal includes:
the mobile management unit finds a source service GPRS supporting node SGSN of a user according to the tracking area request message and sends an SGSN context request message to the source SGSN;
the mobile management unit receives an SGSN context response message sent by the SGSN;
and the mobile management unit acquires the PDP context of the terminal from the SGSN context response message.
In an embodiment of the present invention, the tracking area update procedure in which the mobility management unit establishes a default bearer for the terminal using the subscribed default APN includes:
the mobile management unit sends a location updating request to a home location register so as to acquire user subscription information from the home location register;
the mobile management unit receives user subscription information sent by a home location register through an update location response message;
the mobile management unit sends a session establishment request message to a service gateway according to the signed default APN so as to inform the service gateway of establishing a default bearer;
the mobile management unit receives a session establishment response message sent by a service gateway to provide bearing information;
the mobile management unit sends an initial context request message to a 4G base station to which the terminal belongs so as to request the 4G base station to establish a radio bearer for the terminal;
the mobile management unit receives an initial context establishment response message sent by the 4G base station;
the mobile management unit sends a tracking area receiving message to the terminal and informs the terminal of updating and receiving the tracking area;
the mobile management unit receives a tracking area completion message sent by a terminal;
the mobile management unit sends a load modification request message to the service gateway and informs the service gateway of the wireless load information;
and the mobile management unit receives a bearer modification request message sent by the service gateway, and the updating of the tracking area is completed.
In a second aspect, an embodiment of the present invention provides a tracking area updating apparatus, where the apparatus includes a first receiving unit, a first obtaining unit, a first determining unit, a second determining unit, and a establishing unit, where:
the first receiving unit is used for triggering the first acquiring unit after receiving a tracking area updating request message when the terminal is switched from the 2G/3G network to the 4G network;
the first obtaining unit is used for obtaining the PDP context of the terminal;
the first judging unit is used for judging whether the terminal has a PDP context or not to obtain a first judging result;
the second judging unit is configured to, when the first judging result indicates that the terminal does not have a PDP context, judge whether the terminal has a default APN for subscription, to obtain a second judging result;
and the establishing unit is configured to establish a default bearer tracking area update procedure for the terminal according to the signed default APN when the second determination result indicates that the terminal has the signed default APN.
In an embodiment of the present invention, the apparatus further includes a rejecting unit, configured to reject the terminal tracking area update request message when the second determination result indicates that the terminal does not have a subscribed default APN.
In an embodiment of the present invention, the apparatus further includes a starting unit, configured to start a tracking area update procedure according to the PDP context when the first determination result indicates that the terminal has the PDP context.
In an embodiment of the present invention, the first obtaining unit includes a first sending module, a first receiving module, and an obtaining module, where:
the first sending module is used for finding a source Serving GPRS Support Node (SGSN) of a user according to a tracking area request message and sending an SGSN context request message to the source SGSN;
the first receiving module is configured to receive an SGSN context response message sent by the SGSN;
the acquiring module is used for acquiring the PDP context of the terminal from the SGSN context response message.
In an embodiment of the present invention, the establishing unit includes a second sending module, a second receiving module, a third sending module, a third receiving module, a fourth sending module, a fourth receiving module, a fifth sending module, a fifth receiving module, a sixth sending module, and a sixth receiving module, where:
the second sending module is configured to send a location update request to the home location register, so as to obtain user subscription information from the home location register;
the second receiving module is used for receiving the user subscription information sent by the home location register through the update location response message;
the third sending module is configured to send a session establishment request message to the service gateway according to the signed default APN, so as to notify the service gateway of establishing a default bearer;
the third receiving module is configured to receive a session establishment response message sent by the service gateway, so as to provide bearer information;
the fourth sending module is configured to send an initial context request message to the 4G base station to which the terminal belongs, so as to request the 4G base station to establish a radio bearer for the terminal;
the fourth receiving module is configured to receive an initial context setup response message sent by the 4G base station;
the fifth sending module is used for sending a tracking area receiving message to the terminal and informing the terminal of the tracking area updating receiving;
the fifth receiving module is configured to receive a tracking area completion message sent by the terminal;
the sixth sending module is configured to send a bearer modification request message to the serving gateway, and notify the serving gateway of the radio bearer information;
and the sixth receiving module is configured to receive a bearer modification request message sent by the service gateway, so that the tracking area update is completed.
The embodiment of the invention provides a tracking area updating method and a tracking area updating device, wherein when a terminal is switched from a 2G/3G network to a 4G network, a mobile management unit receives a tracking area updating request message and then acquires a PDP context of the terminal; when the terminal has no PDP context, the mobile management unit judges whether the terminal has a default APN for signing; when the terminal has the signed default APN, the mobile management unit establishes a tracking area updating flow of default load for the terminal by using the signed default APN, so that the problem of network load increase caused by failure of updating of the tracking area can be avoided.
Drawings
Fig. 1 is a schematic flow chart illustrating a tracking area update failure when a terminal is switched from a 2G/3G network to a 4G network in an idle state in the related art;
fig. 2-1 is a schematic flow chart illustrating a first implementation of a tracking area updating method according to an embodiment of the present invention;
fig. 2-2 is a schematic flow chart illustrating an implementation of a tracking area updating method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a structure of a tracking area update apparatus according to an embodiment of the present invention;
fig. 4 is a schematic flowchart illustrating a process of successfully establishing a default bearer and updating a tracking area for a terminal according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further elaborated below with reference to the drawings and the specific embodiments.
Fig. 1 is a schematic diagram of a flow of a tracking area update failure when a terminal is switched from a 2G/3G network to a 4G network in an idle state in the related art, as shown in fig. 1, the flow includes:
here, the 4G base station includes a Long Term Evolution (LTE) type base station.
The new 4G base station initiates a Tracking Area Update (TAU) procedure, which includes steps 102 to 107;
here, the SGSN context response request message includes a PDP context;
here, the new 4G base station sends a tracking area reject message to the terminal and requires the terminal to re-attach;
and 108, the terminal reinitiates the attachment process under the 4G network.
It can be seen from the above flow that, if the terminal is in an idle state during the tracking area update, the tracking area update will fail and need to be reattached, which increases the network load and prolongs the duration of the signaling flow. Specifically, when the terminal moves from a 2G/3G network coverage area to a 4G network coverage area, an optional field is added when the terminal initiates a network reselection request to a 4G base station to identify whether an inactive user can reselect to a subscribed default APN when the terminal initiates the network reselection request to the 4G base station, wherein the initiation of the network reselection request to the 4G base station by the terminal may be implemented by sending a tracking area update (taureq) message to the 4G base station. After receiving the request message for updating the tracking area of the terminal, the mobile management unit in the core network obtains the context information of the terminal from the original SGSN of the terminal by the mobile management module of the mobile management unit, and starts a corresponding process according to the context information of the terminal. Fig. 2-1 is a schematic flow chart of a first implementation process of a tracking area updating method according to an embodiment of the present invention, as shown in fig. 2-1, the method includes:
here, the acquiring, by the mobility management unit, the PDP context of the terminal includes:
the mobile management unit finds a source service GPRS supporting node SGSN of a user according to the tracking area request message and sends an SGSN context request message to the source SGSN;
the mobile management unit receives an SGSN context response message sent by the SGSN;
and the mobile management unit acquires the PDP context of the terminal from the SGSN context response message.
specifically, the terminal reselects to the 4G network, and activates the default bearer by using the originally activated APN as the default bearer.
specifically, the mobile management unit adds a software function, acquires user subscription information from a Home Location Register (HLR), initiates a default bearer establishment procedure according to a default APN signed by a user and responded by the Home location register, establishes a default bearer for the terminal, and updates a tracking area of the response terminal successfully after the default bearer is established successfully.
specifically, rejecting the terminal tracking area update request may be implemented by sending a tracking area reject message to the terminal, and after the terminal receives the tracking area reject message, the terminal needs to re-attach to the 4G network, and the MME starts a normal attach procedure.
Based on the embodiment shown in fig. 2-1, another embodiment of the present invention further provides a tracking area updating method, as shown in fig. 2-2, the method includes:
step S201, when the terminal is switched from the 2G/3G network to the 4G network, the mobile management unit receives the tracking area updating request message and then acquires the PDP context of the terminal;
step S202, judging whether the terminal has a PDP context or not to obtain a first judgment result;
step S203, when the first judgment result shows that the terminal has no PDP context, the mobile management unit judges whether the terminal has a signed default APN or not to obtain a second judgment result;
step S204, when the second determination result indicates that the terminal has the signed default APN, the mobility management unit establishes a tracking area update procedure of a default bearer for the terminal using the signed default APN.
In the embodiment of the present invention, the method further includes: and when the second judgment result shows that the terminal does not have the default APN signed with the contract, the mobile management unit refuses the terminal tracking area updating request.
In the embodiment of the present invention, the method further includes: and when the first judgment result shows that the terminal has the PDP context, the mobile management unit starts a tracking area updating process according to the PDP context.
In this embodiment of the present invention, the acquiring, by the mobility management unit, the PDP context of the terminal includes:
the mobile management unit finds a source service GPRS supporting node SGSN of a user according to the tracking area request message and sends an SGSN context request message to the source SGSN;
the mobile management unit receives an SGSN context response message sent by the SGSN;
and the mobile management unit acquires the PDP context of the terminal from the SGSN context response message.
When the terminal moves from the 2/3G network coverage area to the 4G network coverage area, if the terminal does not have a PDP context, the mobility management unit implements the establishment of the default bearer for the terminal, and fig. 4 is a schematic flowchart of the establishment of the default bearer for the terminal and the successful update of the tracking area in the embodiment of the present invention, as shown in fig. 4, the process includes:
In step 404, the source SGSN sends an SGSN context response message to the mobility management unit.
Here, the mobility management unit may acquire the PDP context information of the terminal from the SGSN context response message.
In step 405, the mobility management unit sends an Identity Request/Response (Identity Request/Response) message to the terminal in order to obtain Identity authentication.
in step 407, the mme initiates an encryption negotiation procedure through an encryption option Request/Response (encrypted options Request/Response) message.
In step 408, the mobility management unit sends a location Update request (Update location request) message to the home location register to obtain the subscriber subscription information from the home location register.
step 412, the mobile management unit sends a Request for establishing a session (createsessionrequest) message to the serving gateway according to the default APN of the user, so as to notify the serving gateway to establish a default bearer;
The service gateway sends a Create session response (Create session response) to provide the bearer information to the mobility management unit, step 415.
In step 416, the mobility management unit sends an Initial Context request (Initial Context setup request) message to the 4G base station, so as to request the 4G base station to establish a radio bearer for the terminal.
in step 419, the 4G base station sends an Initial context setup Response (Initial context setup Response) message to the mobility management unit so as to notify the mobility management unit that the radio bearer setup is completed.
In step 420, the mobility management unit sends a tracking area Accept (TAU Accept) message to the terminal, and notifies the terminal of the tracking area update Accept.
In step 421, the terminal transmits a tracking area Complete (TAU Complete) message to the mobile management unit.
In step 422, the mme sends a Modify Bearer Request (Modify Bearer Request) message to the serving gateway, notifying the serving gateway of the radio Bearer information.
In step 423, the serving gateway sends a Modify Bearer Request (Modify Bearer Request) message to the packet data network gateway.
The packet data network gateway sends a Modify Bearer Response (Modify Bearer Response) message to the serving gateway, step 424.
In step 425, the serving gateway sends a Modify Bearer request (Modify Bearer Response) message to the mobility management unit, and the tracking area update is completed.
The technical scheme provided by the embodiment of the invention optimizes the existing tracking area updating process and has the following advantages: 1) signaling flow is reduced; under normal conditions, the terminal updates the tracking area from the 2G/3G network to the 4G network in an idle state, the updating of the tracking area fails, and the signaling flow comprises a tracking area updating failure flow and an attachment flow; in the technical scheme provided by the embodiment of the invention, the reselection from the terminal to the 4G network is completed through one tracking area updating process, and the signaling process is greatly shortened, so that the updating time of the tracking area of the terminal is shortened. 2) Network resources are saved; after the signaling flow is shortened, the signaling messages transmitted on the network are reduced, so that the bandwidth resources of a network air interface and a core network can be effectively saved.
Based on the above-mentioned tracking area updating method, an embodiment of the present invention provides a tracking area updating apparatus, fig. 3 is a schematic structural diagram of the tracking area updating apparatus according to the embodiment of the present invention, as shown in fig. 3, the tracking area updating apparatus 300 includes a first receiving unit 301, a first obtaining unit 302, a first determining unit 303, a second determining unit 304, and a establishing unit 305, where:
the first receiving unit 301 is configured to trigger the first obtaining unit after receiving a tracking area update request message when the terminal is switched from the 2G/3G network to the 4G network;
the first obtaining unit 302 is configured to obtain a PDP context of a terminal;
the first determining unit 303 is configured to determine whether the terminal has a PDP context, so as to obtain a first determination result;
the second determining unit 304 is configured to determine whether the terminal has a default APN for subscription when the first determination result indicates that the terminal does not have a PDP context, so as to obtain a second determination result;
the establishing unit 305 is configured to establish a tracking area update procedure of a default bearer for the terminal according to the signed default APN when the second determination result indicates that the terminal has the signed default APN.
In this embodiment of the present invention, the apparatus further includes a rejecting unit, configured to reject the terminal tracking area update request message when the second determination result indicates that the terminal does not have a default APN for subscription.
In this embodiment of the present invention, the apparatus further includes a starting unit, configured to start a tracking area update procedure according to the PDP context when the first determination result indicates that the terminal has the PDP context.
In this embodiment of the present invention, the first obtaining unit includes a first sending module, a first receiving module, and an obtaining module, where:
the first sending module is used for finding a source Serving GPRS Support Node (SGSN) of a user according to a tracking area request message and sending an SGSN context request message to the source SGSN;
the first receiving module is configured to receive an SGSN context response message sent by the SGSN;
the acquiring module is used for acquiring the PDP context of the terminal from the SGSN context response message.
In this embodiment of the present invention, the establishing unit includes a second sending module, a second receiving module, a third sending module, a third receiving module, a fourth sending module, a fourth receiving module, a fifth sending module, a fifth receiving module, a sixth sending module and a sixth receiving module, where:
the second sending module is configured to send a location update request to the home location register, so as to obtain user subscription information from the home location register;
the second receiving module is used for receiving the user subscription information sent by the home location register through the update location response message;
the third sending module is configured to send a session establishment request message to the service gateway according to the signed default APN, so as to notify the service gateway of establishing a default bearer;
the third receiving module is configured to receive a session establishment response message sent by the service gateway, so as to provide bearer information;
the fourth sending module is configured to send an initial context request message to the 4G base station to which the terminal belongs, so as to request the 4G base station to establish a radio bearer for the terminal;
the fourth receiving module is configured to receive an initial context setup response message sent by the 4G base station;
the fifth sending module is used for sending a tracking area receiving message to the terminal and informing the terminal of the tracking area updating receiving;
the fifth receiving module is configured to receive a tracking area completion message sent by the terminal;
the sixth sending module is configured to send a bearer modification request message to the serving gateway, and notify the serving gateway of the radio bearer information;
and the sixth receiving module is configured to receive a bearer modification request message sent by the service gateway, so that the tracking area update is completed.
Here, it should be noted that: the above description of the embodiment of the apparatus is similar to the above description of the embodiment of the method, and has similar beneficial effects to the embodiment of the method, and therefore, the description thereof is omitted. For technical details that are not disclosed in the embodiments of the apparatus of the present invention, please refer to the description of the embodiments of the method of the present invention for understanding, and therefore, for brevity, will not be described again.
It should be noted that, in the tracking area update apparatus provided in the embodiment of the present invention, the first receiving unit, the first obtaining unit, the first determining unit, the second determining unit, the establishing unit, the rejecting unit, and the starting unit, and each module included in the first obtaining unit and each module included in the establishing unit may be implemented by a processor in a communication terminal; of course, the implementation can also be realized through a specific logic circuit; in the course of a particular embodiment, the processor may be a Central Processing Unit (CPU), a Microprocessor (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as a removable Memory device, a Read Only Memory (ROM), a magnetic disk, or an optical disk.
Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A tracking area update method, the method comprising:
when the terminal is switched from a 2G/3G network to a 4G network in an idle state, the terminal sends a tracking area updating request message to a 4G base station, and after receiving the tracking area updating request message, a mobile management unit acquires a Packet Data Protocol (PDP) context of the terminal from a terminal source homing SGSN;
judging whether the terminal has a PDP context or not to obtain a first judgment result;
when the first judgment result shows that the terminal has no PDP context, the mobile management unit judges whether the terminal has a signed default access point APN or not to obtain a second judgment result;
and when the second judgment result shows that the terminal has the signed default APN, the mobile management unit establishes a tracking area updating process of default load for the terminal by using the signed default APN.
2. The method of claim 1, further comprising: and when the second judgment result shows that the terminal does not have the default APN signed with the contract, the mobile management unit refuses the terminal tracking area updating request.
3. The method of claim 1, further comprising: and when the first judgment result shows that the terminal has the PDP context, the mobile management unit starts a tracking area updating process according to the PDP context.
4. The method of claim 1, wherein the obtaining the PDP context of the terminal by the mobility management unit comprises:
the mobile management unit finds a source service GPRS supporting node SGSN of a user according to the tracking area request message and sends an SGSN context request message to the source SGSN;
the mobile management unit receives an SGSN context response message sent by the SGSN;
and the mobile management unit acquires the PDP context of the terminal from the SGSN context response message.
5. The method according to any of claims 1 to 4, wherein the tracking area update procedure for the mobility management unit to establish a default bearer for the terminal using the subscribed default APN comprises:
the mobile management unit sends a location updating request to a home location register so as to acquire user subscription information from the home location register;
the mobile management unit receives user subscription information sent by a home location register through an update location response message;
the mobile management unit sends a session establishment request message to a service gateway according to the signed default APN so as to inform the service gateway of establishing a default bearer;
the mobile management unit receives a session establishment response message sent by a service gateway to provide bearing information;
the mobile management unit sends an initial context request message to a 4G base station to which the terminal belongs so as to request the 4G base station to establish a radio bearer for the terminal;
the mobile management unit receives an initial context establishment response message sent by the 4G base station;
the mobile management unit sends a tracking area receiving message to the terminal and informs the terminal of updating and receiving the tracking area;
the mobile management unit receives a tracking area completion message sent by a terminal;
the mobile management unit sends a load modification request message to the service gateway and informs the service gateway of the wireless load information;
and the mobile management unit receives a bearer modification request message sent by the service gateway, and the updating of the tracking area is completed.
6. A tracking area updating device is characterized in that the device comprises a first receiving unit, a first obtaining unit, a first judging unit, a second judging unit and a establishing unit, wherein:
the first receiving unit is used for receiving the tracking area updating request message after the terminal sends the tracking area updating request message to the 4G base station when the terminal is switched from the 2G/3G network to the 4G network in an idle state, and triggering the first acquiring unit after receiving the tracking area updating request message;
the first obtaining unit is used for obtaining a Packet Data Protocol (PDP) context of the terminal from a source homing SGSN of the terminal;
the first judging unit is used for judging whether the terminal has a PDP context or not to obtain a first judging result;
the second judging unit is configured to, when the first judging result indicates that the terminal does not have a PDP context, judge whether the terminal has a default access point APN for subscription, to obtain a second judging result;
and the establishing unit is configured to establish a default bearer tracking area update procedure for the terminal according to the signed default APN when the second determination result indicates that the terminal has the signed default APN.
7. The apparatus of claim 6, further comprising a rejecting unit configured to reject the tracking area update request message when the second determination result indicates that the terminal does not have a subscribed default APN.
8. The apparatus according to claim 6, further comprising an initiating unit, configured to initiate a tracking area update procedure according to the PDP context when the first determination result indicates that the terminal has the PDP context.
9. The apparatus of claim 6, wherein the first obtaining unit comprises a first sending module, a first receiving module, and an obtaining module, wherein:
the first sending module is used for finding a source Serving GPRS Support Node (SGSN) of a user according to a tracking area request message and sending an SGSN context request message to the source SGSN;
the first receiving module is configured to receive an SGSN context response message sent by the SGSN;
the acquiring module is used for acquiring the PDP context of the terminal from the SGSN context response message.
10. The apparatus according to any one of claims 6 to 9, wherein the establishing unit comprises a second sending module, a second receiving module, a third sending module, a third receiving module, a fourth sending module, a fourth receiving module, a fifth sending module, a fifth receiving module, a sixth sending module and a sixth receiving module, wherein:
the second sending module is configured to send a location update request to the home location register, so as to obtain user subscription information from the home location register;
the second receiving module is used for receiving the user subscription information sent by the home location register through the update location response message;
the third sending module is configured to send a session establishment request message to the service gateway according to the signed default APN, so as to notify the service gateway of establishing a default bearer;
the third receiving module is configured to receive a session establishment response message sent by the service gateway, so as to provide bearer information;
the fourth sending module is configured to send an initial context request message to the 4G base station to which the terminal belongs, so as to request the 4G base station to establish a radio bearer for the terminal;
the fourth receiving module is configured to receive an initial context setup response message sent by the 4G base station;
the fifth sending module is used for sending a tracking area receiving message to the terminal and informing the terminal of the tracking area updating receiving;
the fifth receiving module is configured to receive a tracking area completion message sent by the terminal;
the sixth sending module is configured to send a bearer modification request message to the serving gateway, and notify the serving gateway of the radio bearer information;
and the sixth receiving module is configured to receive a bearer modification request message sent by the service gateway, so that the tracking area update is completed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510002886.8A CN105828399B (en) | 2015-01-05 | 2015-01-05 | Tracking area updating method and device |
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| CN201510002886.8A CN105828399B (en) | 2015-01-05 | 2015-01-05 | Tracking area updating method and device |
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| CN112118606B (en) * | 2019-06-21 | 2022-04-29 | 华为技术有限公司 | Method, related device and system for realizing service continuity |
| CN113923613B (en) * | 2021-10-14 | 2022-09-16 | 维沃移动通信有限公司 | Call processing method and device, electronic equipment and storage medium |
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| CN101478743A (en) * | 2008-01-03 | 2009-07-08 | 大唐移动通信设备有限公司 | Method and apparatus for EPS bearing management |
| CN101505474A (en) * | 2008-02-04 | 2009-08-12 | 华为技术有限公司 | Network side processing method in subscriber handover process, network element equipment and network system |
| CN103338489A (en) * | 2013-06-27 | 2013-10-02 | 华为技术有限公司 | System switching method, system switching device and network system |
| CN103402204A (en) * | 2009-05-14 | 2013-11-20 | 华为技术有限公司 | Processing method of APN (access point name) constraint information, processing system of APN constraint information, network element equipment and gateway equipment |
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| CN101478743A (en) * | 2008-01-03 | 2009-07-08 | 大唐移动通信设备有限公司 | Method and apparatus for EPS bearing management |
| CN101505474A (en) * | 2008-02-04 | 2009-08-12 | 华为技术有限公司 | Network side processing method in subscriber handover process, network element equipment and network system |
| CN103402204A (en) * | 2009-05-14 | 2013-11-20 | 华为技术有限公司 | Processing method of APN (access point name) constraint information, processing system of APN constraint information, network element equipment and gateway equipment |
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