TWI638576B - Method for redirecting terminal equipment to private network, terminal equipment and base station - Google Patents

Abstract

The invention provides a method for redirecting a terminal device to a private network, a terminal device, and a base station. The terminal device is switched from a first network node to a second network node, and the first network node and the first base station Connection, the second network node is connected to the second base station, the method includes: receiving identification information of the private network matching the terminal device sent by the second network node; initiated after the terminal device returns to the idle state When the tracking area is updated, the identification information of the private network is sent to the second base station, and the identification information of the private network is used to instruct the second base station to reset the terminal device to a target corresponding to the identification information Network node.

Description

Method for redirecting terminal equipment to private network, terminal equipment and base station

The invention belongs to the field of communication technology, and particularly relates to a method and device for redirecting terminal equipment to a private network.

With the heavy use of Machine-Type Communication (MTC), the network needs to face the problem of a large number of terminals accessing the network. At the same time, different terminals have different characteristics, and the supported services are diversified; for example, automatic sales MTC devices such as cargo planes may not need to support mobility, MTC devices such as medical monitoring need to ensure the instant transmission of data, and MTC devices such as water meters and electricity meters only need to transmit small data at a specific time. In order to avoid the impact of these MTC devices on the services of existing users, and at the same time can provide appropriate optimization services for different user networks, operators may choose to deploy different types of core networks; User equipment (UE) will access different specific networks. This particular network is called a Décor (dedicated) network.

However, when the network is deployed, there may be cases where the previously deployed network does not support the Décor network feature because it has not been upgraded; or when the network is deployed, the operator only deployed the Décor network in some places. In this case, the UE can only access the non-Décor network, but if the UE moves to a location that supports Décor characteristics, or the network detects the existence of the Décor network with UE characteristics, it attaches ), Tracking Area Update (TAU) or Routing Area Update (RAU) The network access server (NAS) message redirection process shown in FIG. 1.

Step 1: When the first new Mobility Management Entity (MME) / Serving GPRS (General Packet Radio Service) Support Node (SGSN) receives the UE-initiated After the attach request / TAU request / RAU request message, the first new MME / SGSN is from the old MME / SGSN or the Home Subscriber Server (HSS) To obtain the UE type information of the UE. The first new MME / SGSN determines whether there is a Décor network that meets the needs of this UE based on the UE type information and configuration information of the UE.

The first new MME / SGSN sends a NAS redirection request to the Residential Access Network (RAN). The request carries the complete NAS message and contains the first new MME / SGSN Décor selected by the UE. Network identification information. In the current agreement, the Décor network is based on the MME Group ID (MMEGI) (Universal Mobile Telecommunications System, Universal Mobile Telecommunications System) terrestrial radio access network (Evolved UMTS Terrestrial Radio Access Network) , E-UTRAN) or Null-NRI (Network Resource Identifier) / SGSN Group ID (UMTS Terrestrial Radio Access Network (UTRAN) / GSM (Global System for Mobile Communication (Global System for Mobile Communications) to identify the EDGE (Enhanced Data Rate for GSM Evolution, Enhanced Data Rate for GSM Evolution) radio access network (GSM EDGE Radio Access Network, GERAN).

Step 2: The network node selection function of the RAN node is based on MMEGI or The Null-NRI / SGSN Group ID selects a new MME / SGSN for the UE.

Step 3: The evolved Node B (eNB) / Radio Network Controller (RNC) sends an Initial UE message to the selected MME / SGSN, which carries the NAS request information of the UE , And MMEGI or Null-NRI / SGSN Group ID information. The MMEGI or Null-NRI / SGSN Group ID information indicates that this is a redirect message. The second new MME / SGSN cannot redirect this NAS message again.

In addition, if the UE does not support the Décor network in the source cell, and the new cell after the handover supports the Décor network, then the steps in Figure 2 will be performed:

Step 4: When the switched MME decides to redirect the UE to the Décor network, the MME initiates a Globally Unique Temporary Identity (GUTI) reassignment procedure to the UE, which carries a tracking area identifier that is not broadcast ( Tracking Area Identity (TAI) / Routing Area Identity (RAI).

Step 5: The MME / SGSN releases the RAN side connection, and the UE moves to the idle state.

Step 6: The TAI / RAI without broadcast triggers the UE to initiate a TAU procedure. The MME / SGSN receives a TAU / RAU request message.

Step 7: The MME / SGSN initiates a NAS redirection procedure according to the procedure shown in FIG. 1.

However, the scheme of the related technology is more complicated because it considers compatibility with the terminal of the previous version and cannot affect the behavior of the UE. In particular, redirection occurs after switching, and the procedure is more complicated. The related technology agreement stipulates that the NAS redirection procedure can only occur in the TAU / RAU procedure of the UE in an idle state, and the handover (HO) procedure results in TAU cannot initiate NAS redirection. According to the procedures in the related technology, after the UE has switched, if the UE leaves the original Tracking Area (TA) list, the UE needs to initiate a TAU procedure during the handover. After this procedure ends, the MME / SGSN initiates a GUTI re-assignment procedure, which triggers the UE to initiate a TAU again. In this TAU procedure, the MME initiates a NAS redirection procedure. The implementation is complicated, and there are many interactions between the UE and the network.

The purpose of the present invention is to provide a method for redirecting a terminal device to a private network, a terminal device, and a base station, which solves the complicated procedure when the terminal device is redirected after switching in the related art, and the terminal device interacts with the network more, which affects Redirection issues that consume network bandwidth.

To achieve the above object, an embodiment of the present invention provides a method for redirecting a terminal device to a private network. The terminal device is switched from a first network node to a second network node, and the first network node and the first base And the second network node is connected to the second base station, the method includes: receiving identification information of a private network matching the terminal device sent by the second network node; after the terminal device returns to an idle state When the tracking area update is initiated, the identification information of the private network is sent to the second base station, and the identification information of the private network is used to instruct the second base station to redirect the terminal device to a location corresponding to the identification information. Target network node.

Optionally, receiving the trigger information that triggers the tracking area update sent by the second network node; the trigger information is used to trigger the terminal device that returns to the idle state to initiate the tracking area update.

Optionally, the receiving device sends a private network matching the terminal device to the private network. The identification information of the human network includes the following steps: after the terminal device is switched, receiving a GUTI reassignment request of the terminal device sent by the second network node; wherein the GUTI reassignment request carries a personal information matching the terminal device. Network identification information; a GUTI redistribution request response is sent to the second network node, and the GUTI redistribution request response is used to indicate whether the GUTI redistribution is successful.

Optionally, the step of receiving identification information of the private network matching the terminal device sent by the second network node includes: sending a tracking area update request to the second network node during the terminal device switching process; receiving The tracking area update request sent by the second network node receives the receiving information, and the tracking area update request receiving information carries identification information of the private network matching the terminal device with the terminal device.

Optionally, when the tracking area update is initiated after the terminal device returns to the idle state, the step of sending the identification information of the private network to the second base station includes: receiving the second network after the GUTI re-allocation is successful. A command sent by the router node to release the resources of the terminal device, the terminal device returns to an idle state; initiates a tracking area update, and carries a Radio Resource Control (RRC) message sent to the second base station with The identification information of the private network that the terminal device matches.

Optionally, when the tracking area update is initiated after the terminal device returns to the idle state, the step of sending the identification information of the private network to the second base station includes: After completing the tracking area update, after receiving the command from the second network node to release the resources of the terminal device, the terminal device returns to the idle state; the tracking area update is initiated again, and an RRC message is sent to the second base station. It carries identification information of the private network that matches the terminal device.

Optionally, the identification information of the private network is one or a combination of a group identity of the MME or a group identity of the SGSN.

Optionally, the trigger information for triggering the tracking area update is a non-broadcast TAI or a non-broadcast RAI.

An embodiment of the present invention also provides a method for redirecting a terminal device to a private network. The terminal device is switched from a first network node to a second network node. The first network node is connected to a first base station. The second network node is connected to the second base station. The method includes: receiving an RRC message sent by the terminal device, where the RRC message includes identification information of the private network matching the terminal device; and determining according to the identification information A target network node corresponding to the identification information; redirecting the terminal device to the target network node.

Optionally, the step of redirecting the terminal device to the destination network node includes: sending the initial information of the terminal device and a tracking area update request to the target network node, and controlling the terminal device to access the target network node.

An embodiment of the present invention also provides a terminal device, where the terminal device is switched from a first network node to a second network node, the first network node is connected to a first base station, and the second network node is connected to a second base Station connection, the device includes: The receiving module is used to receive the identification information of the private network matching the terminal device sent by the second network node; the sending module is used to send the tracking area update after the terminal device returns to the idle state. The identification information of the private network is sent to the second base station, and the identification information of the private network is used to instruct the second base station to redirect the terminal device to a target network node corresponding to the identification information.

Optionally, the terminal device further includes a trigger receiving module for receiving trigger information of a tracking area update sent by the second network node; the trigger information is used to trigger the terminal device to return to the idle state to initiate the tracking area. Update.

Optionally, the receiving module includes: a first receiving submodule, configured to receive a GUTI reallocation request of a terminal device sent by a second network node after the terminal device is switched, wherein the GUTI reallocation request Carrying the identification information of the private network matching the terminal device; a second receiving sub-module for sending a GUTI redistribution request response to the second network node, and the GUTI redistribution request response is used to indicate a GUTI redistribution whether succeed.

Optionally, the receiving module includes a third receiving sub-module for sending a tracking area update request to the second network node during the terminal device switching process; a fourth receiving sub-module for receiving the The tracking area update request sent by the second network node receives the information, and the tracking area update request includes the identification information of the private network that the terminal device matches with the terminal device.

Optionally, the sending module includes: a first sending sub-module, configured to receive a command to release a resource of the terminal device sent by the second network node after the GUTI reallocation is successful, and the terminal device returns to idle State; a second sending sub-module for initiating the tracking area update, and carrying the identification information of the private network matching the terminal device in the RRC message sent to the second base station.

Optionally, the sending module includes a third sending sub-module for receiving a command to release the resource of the terminal device sent by the second network node after completing the tracking area update, and the terminal device returns to an idle state. A fourth sending sub-module for initiating the tracking area update again, and carrying the identification information of the private network matching the terminal device in the RRC message sent to the second base station.

Optionally, the identification information of the private network is one or a combination of a group identity of the MME or a group identity of the SGSN.

Optionally, the trigger information for triggering the tracking area update is a non-broadcast TAI or a non-broadcast RAI.

An embodiment of the present invention also provides a terminal device, where the terminal device is switched from a first network node to a second network node, the first network node is connected to a first base station, and the second network node is connected to a second base The terminal device includes: a processor; and a memory connected to the processor through a bus interface, the memory is used to store programs and data used by the processor when performing operations, and when the processor calls When the programs and data stored in the memory are executed, the processor executes the following procedures: receiving identification information of the private network matching the terminal device sent by the second network node; When the terminal device initiates the tracking area update after the terminal device returns to the idle state, the identification information of the private network is sent to the second base station, and the identification information of the private network is used to instruct the second base station to use the terminal device. Redirect to the target network node corresponding to the identification information.

An embodiment of the present invention further provides a base station, including: a message receiving module for receiving an RRC message sent by a terminal device, where the RRC message includes identification information of the private network matching the terminal device; a determining module, It is used to determine the target network node corresponding to the identification information according to the identification information; and the redirection module is used to redirect the terminal device to the target network node.

Optionally, the redirection module includes: a redirection sub-module for sending the initial information of the terminal device and a tracking area update request to the target network node, and controlling the terminal device to access the target network node .

An embodiment of the present invention further provides a base station, including: a processor; and a memory connected to the processor through a bus interface, the memory is used to store programs and data used by the processor when performing operations, When the processor calls and executes the programs and data stored in the memory, the processor executes the following procedures: receiving an RRC message sent by the terminal device, and the RRC message includes an identification of the private network matching the terminal device Information; determining a target network node corresponding to the identification information according to the identification information; and redirecting the terminal device to the target network node.

The above technical solution of the present invention has at least the following beneficial effects: In the method, terminal device, and base station for redirecting a terminal device to a private network according to the embodiments of the present invention, the terminal device acquires and saves the identification information of the private network that matches the terminal device, and then initiates when the terminal device returns to the idle state. The tracking area update procedure includes the identification information of the private network in the RRC message and sends it to the base station, so that the base station selects the target network node corresponding to the private network for the terminal device based on the identification information of the private network, thereby The terminal device is redirected to the target network node; the implementation process is simple, the interaction process between the terminal device and the network is simplified, and the switching efficiency is improved.

11-12, 21-23, 31-33, 41-43 ‧‧‧ steps

51‧‧‧Receiving module

52‧‧‧Send Module

71‧‧‧Message receiving module

72‧‧‧ Determine the module

73‧‧‧ Redirection Module

In order to explain the technical solution of the present application more clearly, the accompanying drawings used in the description of the embodiments are briefly introduced below. Obviously, the accompanying drawings in the following description are only some of the embodiments described in the application. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without paying creative labor. The following drawings are not deliberately drawn in proportion to the actual size, and the focus is on illustrating the gist of the present application.

FIG. 1 shows a flowchart of a NAS redirection in the related art; FIG. 2 shows a flowchart of a redirection after a terminal device is switched in the related technology; and FIG. 3 shows a method for redirecting a terminal device to a private network provided by some embodiments of the present invention FIG. 4 shows a flowchart of basic steps of a method for redirecting a terminal device to a private network provided by some embodiments of the present invention; FIG. 5 illustrates a method for redirecting a terminal device to a private network provided by some embodiments of the present invention Flow chart of the basic steps of another method of private network; FIG. 6 shows a signal flow chart in a specific application scenario of the embodiment shown in FIG. 5 of the present invention; FIG. 7 shows basic steps of another method for redirecting a terminal device to a private network provided by some embodiments of the present invention Flowchart; FIG. 8 shows a signal flow chart in a specific application scenario of the embodiment shown in FIG. 7 of the present invention; FIG. 9 shows another method for redirecting a terminal device to a private network provided by some embodiments of the present invention FIG. 10 is a block diagram of a terminal device provided by some embodiments of the present invention; and FIG. 11 is a block diagram of a base station provided by some embodiments of the present invention.

In the following, the technical solutions in some embodiments of the invention will be clearly and completely described with reference to the drawings in some embodiments of the invention. Obviously, the described embodiments are only a part of the embodiments of the invention, but not all of them. . Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that the redirection method provided in the embodiment of the present invention is applicable to a terminal device that does not support a matching private network in the source cell, and a new cell after the handover supports a matching private network. The switching situation and redirection The scenario diagram of the scenario is shown in Figure 3: the terminal device is switched from the first base station to the second base station, and the terminal device is switched from the first network node to the second network node, and the second network node judges it Whether the operation of redirecting to the private network is required, and if necessary, the redirection procedure provided by the implementation of the present invention is performed.

As shown in FIG. 4, some embodiments of the present invention provide a method for redirecting a terminal device to a private network, which is applied to the terminal device, and the terminal device is switched by a first network node Change to a second network node, the first network node is connected to the first base station, and the second network node is connected to the second base station, the method includes: step 11, receiving the The identification information of the private network matched by the terminal device; Step 12, when the tracking device is initiated to update the tracking area after the terminal device returns to the idle state, the identification information of the private network is sent to the second base station, the private network The identification information of is used to instruct the second base station to redirect the terminal device to a target network node corresponding to the identification information.

In some embodiments of the present invention, the first network node is connected to the first base station, the second network node is connected to the second base station, and the terminal device is switched from the first base station to the second base station. It also switches from the first network node to the second network node. The second network node determines whether the terminal device needs to be redirected to a private network matching the terminal device according to the contract information of the terminal device and the local configuration data of the second network node. If it needs to be redirected to the private network, it receives the relevant data sent by the second network node, that is, the identification information of the private network, and the identification information of the private network is used to instruct the second base station to use the identification information. The terminal device is redirected to the target network node corresponding to the identification information.

It should be noted that, according to the communication mechanism in the related technology, the terminal device needs a trigger condition to initiate the tracking area update after returning to the idle state. The method provided by the embodiment of the present invention further includes: Step 13, receiving a second network node A trigger information sent to trigger the tracking area update is sent; the trigger information is used to trigger the terminal device that returns to the idle state to initiate the tracking area update. The trigger information is to trigger the progress of the tracking area update process, and ensure that the terminal device can re-save Take the redirected target network node.

Furthermore, in the above embodiment of the present invention, the identification information of the private network is one or a combination of the group identity of the MME or the group identity of the SGSN. It should be noted that the above identification information is only an optional embodiment of the present application, and other newly defined identifications are also applicable to the embodiments of the present invention, which are not listed here one by one. Specifically, the trigger information of the trigger tracking area update is a non-broadcast TAI or a non-broadcast RAI.

It should further be noted that the method for triggering the tracking area update by using trigger information is only an optional embodiment of the present invention. With the continuous development of communication technology, the tracking area update is triggered by other methods or the terminal returns to the idle state. Circumstances such as triggering the update of the tracking area also belong to the protection scope of this application.

It should be noted that the redirection process can only be performed when the terminal device returns to the idle state, that is, after the terminal device returns to the idle state, the terminal device triggers the tracking area update according to the trigger information received in step 11. And send the identification information of the private network to the second base station (the second base station is the base station to which the terminal device is currently attached) in the tracking area update procedure; after the second base station receives its identification information, The identification information determines the target network node, redirects the terminal device to the target network node, and completes the redirection process of the terminal device.

In the method for redirecting a terminal device to a private network provided by some embodiments of the present invention, the terminal device acquires and saves identification information of the private network matching the terminal device, and then initiates tracking when the terminal device returns to an idle state The area update procedure includes the identification information of the private network in the RRC message and sends it to the base station, so that the base station selects the target network node corresponding to the private network for the terminal device based on the identification information of the private network, thereby the terminal Assume The device is redirected to the target network node; the implementation process is simple, and the interaction process between the terminal device and the network is simplified, and the switching efficiency is improved.

As shown in FIG. 5, some embodiments of the present invention provide another method for redirecting a terminal device to a private network, which is applied to a terminal device. The terminal device is switched from a first network node to a second network node. The first network node is connected to the first base station and the second network node is connected to the second base station. The method includes: Step 21: After the terminal device is switched, the terminal device sent by the second network node is received. GUTI reassignment request; wherein the GUTI reassignment request carries identification information of the private network that matches the terminal device; step 22, a GUTI reassignment request response is sent to the second network node, and the GUTI reassignment request Apply back to indicate whether GUTI redistribution was successful.

Step 23: When the terminal device initiates the tracking area update after the terminal device returns to the idle state, the identification information of the private network is sent to the second base station, and the identification information of the private network is used to instruct the second base station to The terminal device is redirected to a target network node corresponding to the identification information.

The embodiment of the present invention described with reference to FIG. 5 is applied to the identification information of the private network carried in the GUTI redistribution procedure after the terminal device is switched. Specifically, after the handover is completed, the second network node MME / SGSN needs to initiate a GUTI reallocation procedure when it needs to redirect the terminal device to the private network. At this time, the second network node MME / SGSN includes the identification information of the private network in the message. The identification information of the private network may be MMEGI or Null-NRI / SGSN Group ID information in a related technology agreement, or may be other newly defined identifications. The private network identification information carried in the GUTI redistribution process can be transmitted using a separate IE The input may also be passed to the terminal device in the GUTI information of the terminal device (that is, the MMEGI or NRI / SGSN Group ID in the GUTI of the terminal device is filled as the MMEGI or NRI / SGSN Group ID of the private network). After the GUTI redistribution process is completed, the network releases the resources of the terminal equipment and returns the terminal equipment to the idle state.

Furthermore, in some embodiments of the present invention, step 23 includes: step 231, after the GUTI reallocation is successful, receiving a command from the second network node to release the resources of the terminal device, the terminal device returns to the idle state Step 232, the tracking area update is initiated, and the RRC message sent to the second base station carries identification information of the private network matching the terminal device.

That is, the terminal device triggers the tracking area to update the TAU procedure after receiving the trigger information. The RRC message sent to the second base station carries the identification information of the private network, and the second base station selects the terminal device based on the received private network identification. Target network node (MME / SGSN).

As shown in FIG. 6, the specific application scenario of the embodiment shown in FIG. 5 is described in detail: S1. The second network node initiates a GUTI redirection procedure to the terminal device, which carries a non-broadcast TAI and MMEGI. The non-broadcast TAI is used to trigger the terminal to initiate subsequent TAU procedures. MMEGI is the identity of the private network selected by the second network node for the terminal device; S2, the terminal device sends a GUTI redistribution request response to the second network node; S3, After receiving the terminal equipment, the TAU procedure is triggered, and the RRC message from the terminal equipment to the second base station carries the MMEGI of the private network. The RRC message also includes a TAU request message; S4, the second base station finds the private network information according to the MMEGI, and The target network node is selected for the terminal equipment in the network; S5. The second base station sends a TAU request message to the target network node.

As shown in FIG. 7, some embodiments of the present invention provide another method for redirecting a terminal device to a private network, which is applied to a terminal device. The terminal device is switched from a first network node to a second network node. The first network node is connected to the first base station, and the second network node is connected to the second base station. The method includes: Step 31. During the terminal device switching process, send a tracking area update to the second network node. Request: Step 32: Receive tracking area update request reception information sent by the second network node, and the tracking area update request reception information carries identification information of a private network that matches the terminal device with the terminal device.

Step 33: When the terminal device initiates the tracking area update after returning to the idle state, the identification information of the private network is sent to the second base station, and the identification information of the private network is used to instruct the second base station to The terminal device is redirected to a target network node corresponding to the identification information.

In the embodiment of the present invention described with reference to FIG. 7, after the terminal device is switched, if the terminal device moves out of the TAI list, the terminal device will initiate a TAU procedure during the switching process. In the TAU procedure, the second network node MME / SGSN decides to redirect the terminal equipment to the private network. At this time, the second network node MME / SGSN includes the identification information of the private network and the TAI / RAI value that is not broadcast in the TAU received message. The identification information of the private network may be MMEGI or Null-NRI / SGSN Group ID information in a related technology agreement, or it may be another newly defined identification. The private network identification information carried in the TAU received message can be a single use It can also be transmitted by a unique IE, or it can be included in the GUTI information of the terminal device (ie, the MMEGI or NRI / SGSN Group ID in the GUTI of the terminal is filled with the MMEGI or NRI / SGSN Group ID of the private network). After completing the TAU procedure, the resources of the UE are released, and the UE returns to the idle state.

Furthermore, in some embodiments of the present invention, step 33 includes: step 331, after completing the tracking area update, receiving a command from the second network node to release resources of the terminal device, the terminal device returns to an idle state Step 332: The tracking area update is initiated again, and the RRC message sent to the second base station carries the identification information of the private network that matches the terminal device.

That is, the terminal device stores the received identification information of the private network and the TAI / RAI value without broadcasting. And trigger the TAU request procedure again. The RRC message sent to the second base station carries the identification information of the private network. The second base station selects the target network node (MME / SGSN) in the private network for the terminal device based on the received private network identification. .

As shown in FIG. 8, a specific application scenario of the embodiment of the present invention with reference to FIG. 7 is described in detail: S6, the terminal device switches from the first network node to the second network node; S7, the terminal device The network node that changed the service triggers the TAU procedure; S8. The second network node decides to redirect the terminal device to the private network. The returned TAU received message includes the private network identifier MMEGI and the TAI without broadcast. ; S9. The terminal device triggers the TAU procedure again. The RRC message carries MMEGI.

S10. The second base station finds the private network according to the MMEGI and selects the target network node MME for the terminal device in the private network. S11. The second base station sends a TAU request message to the target network node.

In order to better achieve the foregoing objective, as shown in FIG. 9, some embodiments of the present invention provide another method for redirecting a terminal device to a private network, which is applied to a second base station. The terminal device is provided by the first network. The node switches to a second network node, the first network node is connected to a first base station, and the second network node is connected to a second base station. The method includes: Step 41, receiving an RRC message sent by a terminal device, The RRC message includes identification information of the private network that matches the terminal device; step 42, according to the identification information, determine a target network node corresponding to the identification information; step 43, redirect the terminal device to the terminal device Target network node.

In the embodiment of the present invention described with reference to FIG. 9, the second base station is a terminal device newly accessing the base station, and the RRC message received by the second base station includes the identification information of the private network. The identification information determines a private network, thereby determining a target network node; wherein the target network node and the second network node are both connected to the second base station. After the target network node is determined, the base station controls the terminal device to redirect to the target network node.

Furthermore, step 43 in some embodiments of the present invention includes: Step 431: Send the initial information and tracking area update request of the terminal device to the target network node, and control the terminal device to access the target network node.

In summary, in the embodiment of the present invention with reference to FIG. 9, the terminal device is redirected. In the method for accessing the private network, the terminal device acquires and saves the identification information of the private network that matches the terminal device, and then initiates the tracking area update procedure when the terminal device returns to the idle state, and includes the identification information of the private network. The RRC message is sent to the base station, so that the base station selects the target network node corresponding to the private network for the terminal device according to the identification information of the private network, thereby redirecting the terminal device to the target network node; the implementation process is simple, It also simplifies the interaction process between the terminal equipment and the network and improves the switching efficiency.

In order to better achieve the foregoing objective, as shown in FIG. 10, some embodiments of the present invention further provide a terminal device. The terminal device is switched from a first network node to a second network node. A base station is connected, the second network node is connected to the second base station, and the device includes: The receiving module 51 is used to receive the identification information of the private network that matches the terminal device sent by the second network node; the sending module 52 is used to initiate the tracking area update after the terminal device returns to the idle state, Sending the identification information of the private network to the second base station, and the identification information of the private network is used to instruct the second base station to redirect the terminal device to a target network node corresponding to the identification information.

Specifically, in some embodiments of the present invention, the receiving module 51 includes: a first receiving submodule, configured to receive a GUTI reallocation request of a terminal device sent by a second network node after the terminal device is switched. Wherein, the GUTI reallocation request carries identification information of a private network matching the terminal device; a second receiving submodule is configured to send a GUTI reallocation request response to the second network node, and the GUTI reallocation The request response is used to indicate whether the GUTI redistribution was successful.

Specifically, in some embodiments of the present invention, the receiving module 51 includes: a third receiving submodule, configured to send a tracking area update request to a second network node during the terminal device switching process; a fourth receiving The submodule is configured to receive the tracking area update request receiving information sent by the second network node, and the tracking area update request receiving information carries identification information of the private network matching the terminal device with the terminal device.

Specifically, in some embodiments of the present invention, the sending module 52 includes: a first sending sub-module, configured to receive, after the GUTI reallocation is successful, a resource sent by a second network node that releases the resource of the terminal device. Command, the terminal device returns to the idle state; the second sending submodule is used to initiate the tracking area update, and the RRC message sent to the second base station carries the identification information of the private network that matches the terminal device .

Specifically, in some embodiments of the present invention, the sending module 52 includes: a third sending submodule, configured to receive a command sent by a second network node to release resources of the terminal device after completing the tracking area update. , The terminal device returns to the idle state; the fourth sending submodule is used to initiate the tracking area update again, and the RRC message sent to the second base station carries the identification information of the private network that matches the terminal device .

Specifically, in the embodiment of the present invention with reference to FIG. 10, the identification information of the private network is one or a combination of a group identity of the MME or a group identity of the SGSN.

Specifically, in the embodiment of the present invention with reference to FIG. 10, the trigger information of the trigger tracking area update is a non-broadcast TAI or a non-broadcast RAI.

It should be noted that, the terminal device provided by the embodiment of the present invention with reference to FIG. 10 is a terminal device to which the foregoing method for redirecting a terminal device to a private network is applied. All embodiments of the method are applicable to the terminal device, and all can achieve the same or similar beneficial effects.

In order to better achieve the foregoing objective, some embodiments of the present invention provide a terminal device, where the terminal device is switched from a first network node to a second network node, the first network node is connected to a first base station, and The second network node is connected to the second base station. The terminal device includes: a processor; and a memory connected to the processor through a bus interface, and the memory is used to store the processor for performing operations. When the processor calls and executes the programs and data stored in the memory, the following function modules are implemented: the receiving module is used to receive the second network node that matches the terminal device. Private network identification information; a sending module configured to send the private network identification information to the second base station when the terminal device initiates a tracking area update after the terminal device returns to the idle state The information is used to instruct the second base station to redirect the terminal device to a target network node corresponding to the identification information.

It should be noted that the terminal device provided by some embodiments of the present invention is a terminal device to which the foregoing method for redirecting a terminal device to a private network is applied, and all embodiments of the above method are applicable to the terminal device, and are capable of Achieve the same or similar beneficial effects.

In order to better achieve the foregoing objective, as shown in FIG. 11, some embodiments of the present invention further provide a base station, including: a message receiving module 71, configured to receive a radio resource control (RRC) message sent by a terminal device. The RRC message contains the identification information of the private network that matches the terminal device. A determining module 72 for determining a target network node corresponding to the identification information according to the identification information; and a redirecting module 73 for redirecting the terminal device to the target network node.

Specifically, in some embodiments of the present invention, the redirection module 73 includes: a redirection submodule, configured to send the initial information of the terminal device and a tracking area update request to the target network node to control the terminal The device accesses the target network node.

It should be noted that, the base stations provided by some embodiments of the present invention are base stations to which the foregoing method for redirecting terminal devices to a private network is applied, and all embodiments of the foregoing method for redirecting terminal devices to a private network Both are applicable to this base station, and all can achieve the same or similar beneficial effects.

In order to better achieve the foregoing objective, some embodiments of the present invention further provide a base station, including: a processor; and a memory connected to the processor through a bus interface, the memory is used to store the processor in Programs and data used in performing operations. When the processor calls and executes the programs and data stored in the memory, the following function modules are implemented: a message receiving module for receiving RRC messages sent by the terminal device, The RRC message includes identification information of the private network matching the terminal device; a determination module for determining a target network node corresponding to the identification information according to the identification information; a redirection module for The terminal device is redirected to the target network section point.

It should be noted that, the base stations provided by some embodiments of the present invention are base stations to which the foregoing method for redirecting terminal devices to a private network is applied, and all embodiments of the foregoing method for redirecting terminal devices to a private network Both are applicable to this base station, and all can achieve the same or similar beneficial effects.

The above is an optional embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principles described in the present invention, several improvements and retouches can be made. These improvements and Retouching should also be regarded as the protection scope of the present invention.

Claims (20)

A method for redirecting a terminal device to a private network, wherein the terminal device is switched from a first network node to a second network node, the first network node is connected to a first base station, and the second network The node is connected to the second base station, and the method includes: the terminal device receives the identification information of the private network matching the terminal device sent by the second network node; and initiates the tracking area update after the terminal device returns to the idle state When the identification information of the private network is sent to the second base station, the identification information of the private network is used to instruct the second base station to redirect the terminal device to a target network node corresponding to the identification information . The method for redirecting a terminal device to a private network as described in claim 1, further comprising: receiving trigger information triggered by the second network node to trigger an update of the tracking area, the trigger information being used to trigger a return to an idle state. The terminal device initiates the tracking area update. The method for redirecting a terminal device to a private network according to claim 1, wherein the step of receiving, by the terminal device, the identification information of the private network matching the terminal device and sent by the second network node includes: After the terminal device switching is completed, a Globally Unique Temporary Identity (GUTI) reassignment request of the terminal device sent by the second network node is received; wherein the GUTI reassignment request carries a private network matching the terminal device Identification information of the network; sending a GUTI reallocation request response to the second network node, and the GUTI reallocation request response is used to indicate whether the GUTI reallocation is successful. The method for redirecting a terminal device to a private network according to claim 1, wherein the step of receiving, by the terminal device, the identification information of the private network matching the terminal device and sent by the second network node includes: During the terminal device switching process, a tracking area update request is sent to the second network node; the tracking area update request reception information sent by the second network node is received, and the tracking area update request reception information carries the terminal device and the terminal device. Matching private network identification information. The method for redirecting a terminal device to a private network as described in claim 3, wherein when the terminal device initiates the tracking area update after the terminal device returns to the idle state, the identification information of the private network is sent to the second base The steps of the station include: after the GUTI reallocation is successful, receiving a command from the second network node to release the resources of the terminal device, the terminal device returns to an idle state; initiates a tracking area update, and sends the tracking area update to the second base. A radio resource control (Radio Resource Control, RRC) message sent by the station carries identification information of the private network that matches the terminal device. The method for redirecting a terminal device to a private network as described in claim 4, wherein, when the tracking area update is initiated after the terminal device returns to the idle state, the identification information of the private network is sent to the second The steps of the base station include: after completing the tracking area update, receiving a command from the second network node to release the resources of the terminal device, the terminal device returns to an idle state; again, the tracking area update is initiated, and the second The RRC message sent by the base station carries identification information of the private network that matches the terminal device. The method for redirecting a terminal device to a private network according to any one of claims 1-6, wherein the identification information of the private network is a group identification of a Mobility Management Entity (MME) or One or a combination of a group identity of a serving GPRS support node (Serving GPRS (General Packet Radio Service, General Packet Radio Service)) Support Node (SGSN). The method for redirecting a terminal device to a private network as described in claim 2, wherein the trigger information for triggering the tracking area update is a non-broadcasting Tracking Area Identity (TAI) or a non-broadcasting routing area identifier (Routing Area Identity, RAI). A method for redirecting a terminal device to a private network, wherein the terminal device is switched from a first network node to a second network node, the first network node is connected to a first base station, and the second network The node is connected to a second base station. The method includes: the second base station receives a Radio Resource Control (RRC) message sent by a terminal device, and the RRC message includes the private network matching the terminal device. Identification information; the second base station determines a target network node corresponding to the identification information according to the identification information; the second base station redirects the terminal device to the target network node, wherein the private network The identification information is one of a group identity of a Mobility Management Entity (MME) or a group identity of a Serving GPRS (General Packet Radio Service) Support Node (SGSN). Or combination. The method for redirecting a terminal device to a private network as described in claim 9, wherein the step of redirecting the terminal device to the destination network node includes: sending the initial information and the tracking area update request of the terminal device The target network node is controlled to control the terminal device to access the target network node. A terminal device, wherein the terminal device is switched from a first network node to a second network node, the first network node is connected to a first base station, the second network node is connected to a second base station, and The terminal device includes: a processor; and a memory connected to the processor through a bus interface, the memory is used to store programs and data used by the processor when performing operations, and when the processor calls and executes the memory When the programs and data stored in the body are stored, the processor executes the following procedures: receiving the identification information of the private network matching the terminal device sent by the second network node; and launching the tracking area after the terminal device returns to the idle state When updating, the identification information of the private network is sent to the second base station, and the identification information of the private network is used to instruct the second base station to redirect the terminal device to the target network corresponding to the identification information node. The terminal device according to claim 11, wherein the processor is further configured to: receive trigger information that triggers the tracking area update sent by the second network node; the trigger information is used to trigger the terminal device that returns to the idle state to initiate Tracking area update. The terminal device according to claim 11, wherein the processor is specifically configured to: after the terminal device is switched, receive the Globally Unique Temporary Identity (GUTI) of the terminal device sent by the second network node A redistribution request; wherein the GUTI redistribution request carries identification information of a private network matching the terminal device; and sends a GUTI redistribution request response to the second network node, where the GUTI redistribution request response is used to indicate a GUTI Whether the redistribution was successful. The terminal device according to claim 11, wherein the processor is specifically configured to: during the terminal device switching process, send a tracking area update request to the second network node; and receive the tracking area sent by the second network node The update request receives information, and the tracking area update request received information carries identification information of the private network matching the terminal device with the terminal device. The terminal device according to claim 13, wherein the processor is specifically configured to: after the GUTI reallocation is successful, receive a command sent by the second network node to release the resources of the terminal device, and the terminal device returns to idle Status; initiate tracking area update, and carry radio resource control (RRC) messages sent to the second base station with identification information of the private network that matches the terminal device. The terminal device according to claim 14, wherein the processor is specifically configured to: after completing the tracking area update, receive a command sent by a second network node to release resources of the terminal device, and the terminal device returns to an idle state ; Initiate the tracking area update again, and carry the RRC message sent to the second base station with the identification information of the private network that matches the terminal device. The terminal device according to any one of claims 11-16, wherein the identification information of the private network is a group identity of a Mobility Management Entity (MME) or a serving GPRS support node (Serving GPRS (General Packet Radio Service (General Packet Radio Service Technology)) Support Node (SGSN) group identification. The terminal device according to claim 12, wherein the trigger information for triggering the tracking area update is a non-broadcasting tracking area identity (TAI) or a non-broadcasting routing area identity (RAI) RAI. A base station includes: a processor; and a memory connected to the processor through a bus interface, the memory is used to store programs and data used by the processor when performing operations, and when the processor calls and executes When the programs and data stored in the memory, the processor executes the following procedures: receiving a Radio Resource Control (RRC) message sent by the terminal device, and the RRC message includes the private network matching the terminal device Identification information of the road; determining the target network node corresponding to the identification information according to the identification information; redirecting the terminal device to the target network node, wherein the identification information of the private network is a mobility management entity (Mobility One or a combination of a group identity of a management entity (MME) or a group identity of a serving GPRS support node (Serving GPRS (General Packet Radio Service)). The base station according to claim 19, wherein the processor is specifically configured to send the initial information and the tracking area update request of the terminal device to the target network node, and control the terminal device to access the target network node .