TW201714481A - Method of redirecting terminal equipment to dedicated network, terminal equipment and base station - Google Patents

Abstract

The disclosure provides a method of redirecting terminal equipment to a dedicated network, terminal equipment and base station. The terminal equipment switches from a first network node to a second network node. The first network node is connected with a first base station, and the second network node is connected with a second base station. The method comprises: receiving identification information of a dedicated network matching with the terminal equipment and transmitted from the second network node; and after the terminal equipment returns to an idle state and initiates a tracking area update procedure, transmitting the identification information of the dedicated network to the second base station, wherein the identification information of the dedicated network is configured to indicate to the second base station to redirect the terminal equipment to a target network node corresponding to the identification information.

Description

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

The invention belongs to the field of communication technologies, and in particular relates to a method and device for redirecting a terminal device to a private network.

With the extensive use of Machine-Type Communication (MTC), the network needs to face 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, vending MTC equipment such as freighters may not need to support mobility. MTC equipment such as medical monitoring needs to ensure the instantaneous transmission of data, while MTC equipment such as water meter only needs 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 to provide appropriate optimization services for different user networks, operators may choose to deploy different types of core networks; therefore, different user categories The User Equipment (UE) will access different specific networks. This particular network is called a Décor network.

However, when the network is deployed, there may be a network that was deployed in the early stage because it is not upgraded and does not support the Décor network feature; or when the network is deployed, the operator only deploys 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 the Décor feature, or the network detects the existence of the Décor network with the UE characteristics, attach (attach) ), Tracking Area Update (TAU) or Routing Area Update (RAU) will initiate the process. The network access server (NAS) message redirecting program shown in 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 attach request / TAU request / RAU request message, the first new MME / SGSN from the old MME / SGSN or Home Subscriber Server (HSS) The UE type information of the UE is obtained. The first new MME/SGSN determines whether there is a Décor network satisfying the requirements of the UE according to the UE type information of the UE and the configured information.

The first new MME/SGSN sends a NAS redirect request to the resident access network (RAN), the request carries the complete NAS message, and includes the first new MME/SGSN selected for the UE. Network identification information. In the current agreement, the Décor network is through the MME Group Identity (MMEGI) (Evolved UMTS Terrestrial Radio Access Network) (evolved UMTS (Universal Mobile Telecommunications System)) , E-UTRAN) or null Network Resource Identifier/UMSN Terrestrial Radio Access Network (UTRAN)/GSM (Global System for Mobile) Communication (Global Mobile Communication System) EDGE (Enhanced Data Rate for GSM Evolution) GSM EDGE Radio Access Network (GERAN) is used for identification.

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, where the NAS request information of the UE is carried. And MMEGI or Null-NRI/SGSN Group ID information. The MMEGI or Null-NRI/SGSN Group ID information indicates that this is a redirected 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 switched new cell supports the Décor network, the steps in FIG. 2 will be performed:

Step 4: When the MME after the handover decides to redirect the UE to the Décor network, the MME initiates a Globally Unique Temporary Identity (GUTI) reallocation 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 the TAU/RAU request message.

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

However, the solution of the related art is complicated because the compatibility with the previous version of the terminal is considered and the behavior of the UE cannot be affected. In particular, the redirection after switching is more complicated. The related art protocol stipulates that the NAS redirection procedure can only occur in the TAU/RAU procedure in which the UE is idle, and the handover (Hand Over, HO) procedure results in The TAU cannot initiate NAS redirects. According to the procedure in the related art, after the UE is switched, if the original tracking area list (TA) list is left, the UE needs to initiate a TAU procedure during the handover process. After the end of this procedure, the MME/SGSN initiates the GUTI re-allocation procedure, triggering the UE to initiate the TAU again. In this TAU procedure, the MME initiates the NAS redirect procedure. The implementation is complex, and there are many interactions between the UE and the network.

The object of the present invention is to provide a method, a terminal device and a base station for redirecting a terminal device to a private network, which solves the complicated procedure in the related art when the terminal device is redirected after the handover, and the terminal device and the network interact more, affecting Redirecting efficiency and taking up network bandwidth issues.

In order to achieve the above object, an embodiment of the present invention provides a method for redirecting a terminal device to a private network, where the terminal device is handed over by a first network node to a second network node, the first network node and the first base The second network node is connected to the second base station, and the method includes: receiving, by the second network node, identification information of the private network that matches the terminal device; 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 redirect the terminal device to the identifier information. Target network node.

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

Optionally, the receiving the private network that is sent by the second network node and matching the terminal device The step of identifying the information of the human network includes: after the terminal device is completed, receiving a GUTI re-distribution request of the terminal device sent by the second network node; wherein the GUTI re-allocation request carries a private message matching the terminal device The identification information of the network; sending a GUTI re-allocation request response to the second network node, the GUTI re-allocation request response being used to indicate whether the GUTI reallocation is successful.

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

Optionally, when the tracking device is updated 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 reallocation is successful. The command sent by the path node to release the resource of the terminal device, the terminal device returns to the idle state; initiates the tracking area update, and carries in the Radio Resource Control (RRC) message sent to the second base station The identification information of the private network matched by the terminal device.

Optionally, when the tracking device is updated 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, receiving a command sent by the second network node to release the resource of the terminal device, the terminal device returns to the idle state; initiating the tracking area update again, and transmitting the RRC message to the second base station The identifier information of the private network that matches the terminal device is carried.

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 of the trigger tracking area update is a non-broadcast TAI or a non-broadcast RAI.

The embodiment of the present invention further provides a method for redirecting a terminal device to a private network, where the terminal device is switched by the first network node to a second network node, where the first network node is connected to the first base station, The second network node is connected to the second base station, and the method includes: receiving an RRC message sent by the terminal device, where the RRC message includes the identity information of the private network that matches the terminal device; and determining, according to the identifier 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 comprises: sending the initial information of the terminal device and the tracking area update request to the target network node, and controlling the terminal device to access the target network node.

The embodiment of the invention further provides a terminal device, where the terminal device is switched by the first network node to the second network node, the first network node is connected to the first base station, and the second network node and the second base Connected to the station, the device includes: a receiving module, configured to receive, by the second network node, identification information of a private network that matches the terminal device, and a sending module, configured to: when the terminal device returns to an idle state, initiate a tracking area update, 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 node corresponding to the identification information.

Optionally, the terminal device further includes: a trigger receiving module, configured to receive trigger information of a trigger 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 reassignment request of the terminal device sent by the second network node after the terminal device is completed, where the GUTI reassignment request Carrying the identification information of the private network that matches the terminal device; the second receiving submodule is configured to send a GUTI reassignment request response to the second network node, where the GUTI reassignment request response is used to indicate the GUTI reallocation whether succeed.

Optionally, the receiving module includes: a third receiving submodule, configured to send a tracking area update request to the second network node during the terminal device switching process; and a fourth receiving submodule, configured to receive the The tracking area update request sent by the second network node receives the information, and the tracking area update request receiving information carries the identification information of the private network that the terminal device matches the terminal device.

Optionally, the sending module includes: a first sending submodule, configured to receive, after the successful re-allocation of the GUTI, a command sent by the second network node to release resources of the terminal device, where the terminal device returns to idle The second sending sub-module is configured to initiate a tracking area update, and carry the identification information of the private network that matches the terminal device in the RRC message sent to the second base station.

Optionally, the sending module includes: a third sending submodule, configured to receive a command for releasing the resource of the terminal device sent by the second network node after the tracking area is updated, and the terminal device returns to the idle state. And a fourth sending submodule, configured to re-initiate the tracking area update, and carry the identification information of the private network that matches 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 of the trigger tracking area update is a non-broadcast TAI or a non-broadcast RAI.

The embodiment of the invention further provides a terminal device, where the terminal device is switched by the first network node to the second network node, the first network node is connected to the first base station, and the second network node and the second base Connected to the station, the terminal device includes: a processor; and a memory connected to the processor through the bus interface, the memory is used to store programs and materials used by the processor when performing operations, when the processor calls And executing the program and the data stored in the memory, the processor executing the following procedure: receiving the identification information of the private network that is sent by the second network node and matching the terminal device; Sending the tracking information of the private network to the second base station after the terminal device returns to the idle state, the identification information of the private network is used to indicate that the second base station is the terminal device Redirect to the target network node corresponding to the identification information.

The embodiment of the present invention further provides a base station, including: a message receiving module, configured to receive an RRC message sent by the terminal device, where the RRC message includes the identification information of the private network that matches the terminal device; And determining, by the identifier information, a target network node corresponding to the identifier information; and a redirecting module, configured to redirect the terminal device to the target network node.

Optionally, the redirecting module includes: a redirecting submodule, 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. .

The 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 materials used by the processor when performing operations, When the processor calls and executes the program and data stored in the memory, the processor executes the following procedure: receiving an RRC message sent by the terminal device, where the RRC message includes the identifier of the private network that matches the terminal device. Information; determining, according to the identification information, a target network node corresponding to the identification information; 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, the terminal device and the base station for redirecting the terminal device to the private network in the embodiment 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. Tracking area update procedure, and the identification information of the private network is included in the RRC message and 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 The terminal 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.

Steps 11-12, 21-23, 31-33, 41-43‧‧

51‧‧‧ receiving module

52‧‧‧Transmission module

71‧‧‧Message receiving module

72‧‧‧Determining modules

73‧‧‧Redirecting module

In order to more clearly illustrate the technical solutions of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some of the embodiments described in the present application. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work. The following figures are not intended to be scaled to scale in actual dimensions, with emphasis on the subject matter of the present application.

1 is a flowchart of a NAS redirect in the related art; FIG. 2 is a flowchart showing a redirect of a terminal device after switching in the related art; FIG. 3 is a flowchart showing a method for redirecting a terminal device to a private network according to some embodiments of the present invention; FIG. 4 is a flow chart showing the basic steps of a method for redirecting a terminal device to a private network according to some embodiments of the present invention; FIG. 5 is a diagram showing the redirecting of the terminal device to some embodiments of the present invention. A flow chart of the basic steps of another method of private network; 6 is a signal flow diagram in a specific application scenario of the embodiment of FIG. 5 of the present invention; FIG. 7 is a diagram showing the basic steps of still another method for redirecting a terminal device to a private network according to some embodiments of the present invention. FIG. 8 is a signal flow diagram in a specific application scenario of the embodiment of FIG. 7 of the present invention; FIG. 9 is a flowchart showing another method for redirecting a terminal device to a private network according to 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.

The technical solutions in some embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. . All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be noted that the redirection method provided by the embodiment of the present invention is applicable to a terminal device that does not support a private network that matches the source cell, and the switched new cell supports the private network that matches it, and the switching context and the redirecting The scenario diagram of the situation is shown in FIG. 3: the terminal device switches from the first base station to the second base station, and the terminal device switches from the first network node to the second network node, and the second network node determines that Whether or not a redirection to the private network is required, if necessary, a 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 a terminal device, where the terminal device is cut by the first network node. Switching to the 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 comprising: Step 11: receiving the second network node to send The identification information of the private network matched by the terminal device; step 12, when the tracking device is updated after the terminal device returns to the idle state, sending the identification information of the private network to the second base station, the private network The identification information is used to instruct the second base station to redirect the terminal device to the 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, actually The upper 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 the private network matching the terminal device according to the subscription 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, receiving the relevant information sent by the second network node, that is, the identification information of the private network, the identification information of the private network is used to indicate that the second base station will 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 of the related art, the terminal device needs to be triggered to initiate the tracking area update after returning to the idle state, and the method provided by the embodiment of the present invention further includes: Step 13: receiving the second network node The triggered trigger information of the triggered tracking area is updated; the triggering information is used to trigger the terminal device returning to the idle state to initiate the tracking area update. The trigger information is used to trigger the process of updating the tracking area to ensure that the terminal device can be saved again. Take the redirected target network node.

Further, in the above embodiment of the present invention, 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. It should be noted that the foregoing identification information is only an optional embodiment of the present application, and other newly defined identifiers are also applicable to the embodiments of the present invention, and are not enumerated herein. Specifically, the trigger information of the trigger tracking area update is a non-broadcast TAI or a non-broadcast RAI.

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

It should be noted that the re-directed procedure needs to 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 transmitting the identification information of the private network to the second base station in the tracking area update procedure (the second base station is the base station currently attached to the terminal device); after receiving the identification information, the second base station according to The identification information determines the target network node, and redirects the terminal device to the target network node to complete the redirecting procedure of the terminal device.

In a 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 a private network that matches the terminal device, and then initiates tracking when the terminal device returns to the idle state. The area update procedure, and the identification information of the private network is included in the RRC message and 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 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, and 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 handover is completed, receiving the terminal device sent by the second network node a GUTI redistribution request; wherein the GUTI redistribution request carries identification information of a private network that matches the terminal device; and step 22, sends a GUTI re-allocation request response to the second network node, the GUTI redistribution request The back is applied to indicate whether the GUTI redistribution is successful.

Step 23: When the terminal device returns to the idle state and initiates the tracking area update, 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 indicate that the second base station will The terminal device is redirected to a target network node corresponding to the identification information.

The embodiment of the present invention with reference to FIG. 5 is applied to carry the identification information of the private network in the GUTI redistribution procedure after the terminal device handover is completed. Specifically, when the handover is completed, the second network node MME/SGSN needs to initiate a GUTI reallocation procedure when redirecting 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 the MMEGI or Null-NRI/SGSN Group ID information in the agreement of the related technology, or may be other newly defined identifiers. And carrying the private network identification information in the GUTI redistribution process can be transmitted by using a separate IE. The input may also be transmitted to the terminal device (ie, the MMEGI or the NRI/SGSN Group ID in the GUTI of the terminal device is filled in as the MMEGI or NRI/SGSN Group ID of the private network) in the GUTI information of the terminal device. After the GUTI redistribution process is completed, the network releases the resources of the terminal device, and the terminal device returns to the idle state.

Further, in some embodiments of the present invention, step 23 includes: Step 231, after the GUTI re-allocation succeeds, receiving a command sent by the second network node to release the resource of the terminal device, and the terminal device returns to the idle state. Step 232: Initiating a tracking area update, and carrying the identification information of the private network that matches the terminal device in the RRC message sent to the second base station.

That is, the terminal device triggers the tracking area update TAU procedure after receiving the trigger information, and carries the identification information of the private network in the RRC message sent to the second base station, and the second base station selects the terminal device according to the received private network identifier. 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 redirect procedure to the terminal device, where the non-broadcast TAI and the MMEGI are carried. The non-broadcast TAI is used to trigger the terminal to initiate a subsequent TAU procedure, and the MMEGI is an identifier 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 device, the TAU program is triggered, and the MMEGI of the private network is carried in the RRC message of the terminal device to the second base station. The RRC message further includes a TAU request message; S4, the second base station finds private network information according to the MMEGI, and is private The target network node is selected for the terminal device in the network; S5, the second base station sends the 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, where 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, in the terminal device handover process, sending a tracking area update to the second network node And receiving, by the second network node, the tracking area update request receiving information, where the tracking area update request receiving information carries the identification information of the private network that the terminal device matches the terminal device.

Step 33: When the tracking device is updated 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 indicate that the second base station will The terminal device is redirected to a target network node corresponding to the identification information.

Referring to the embodiment of FIG. 7 of the present invention, after the terminal device switches, if the terminal device moves out of the TAI list, the terminal device initiates a TAU procedure during the handover process. In the TAU procedure, the second network node MME/SGSN decides 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 and the TAI/RAI value without broadcasting in the TAU receiving message. The identification information of the private network may be the MMEGI or Null-NRI/SGSN Group ID information in the agreement of the related technology, or may be other newly defined identifiers. And the private network identification information carried in the TAU receiving message may be a use list. The unique IE is transmitted, or may be included in the GUTI information of the terminal device and transmitted to the terminal device (ie, the MMEGI or NRI/SGSN Group ID in the GUTI of the terminal is filled in as the MMEGI or NRI/SGSN Group ID of the private network). After the TAU procedure is completed, the resources of the UE are released, and the UE returns to the idle state.

Further, in some embodiments of the present invention, step 33 includes: Step 331, after completing the tracking area update, receiving a command sent by the second network node to release the resource of the terminal device, and the terminal device returns to the 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 saves the identification information of the received private network and the TAI/RAI value that is not broadcast. And trigger the TAU request procedure again. Carrying the identification information of the private network in the RRC message sent to the second base station, and the second base station selects the target network node (MME/SGSN) in the private network for the terminal device according to the identifier of the received private network. .

As shown in FIG. 8, the 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 service network node is changed to trigger the TAU procedure; S8, the second network node decides to redirect the terminal device to the private network, and the returned TAU receiving message includes the private network identifier MMEGI and the unpublished TAI. S9, the terminal device triggers the TAU program again, and sends it to the second base station. The RRC message carries the MMEGI.

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

In order to better achieve the above object, 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, and the terminal device is configured by the first network. The node is switched to the 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 41: Receive an RRC message sent by the terminal device, The RRC message includes the identification information of the private network that matches the terminal device. Step 42: Determine, according to the identification information, a target network node corresponding to the identification information. Step 43: redirect the terminal device to the Target network node.

Referring to the embodiment of the present invention, the second base station is a new access base station of the terminal device, and the RRC message received by the second base station includes the identification information of the private network, and the second base station can The identification information determines a private network to determine a target network node; wherein the target network node and the second network node are both connected to the second base station. After determining the target network node, the base station controls the terminal device to redirect to the target network node.

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

In summary, the terminal device is redirected in the embodiment of the present invention with reference to FIG. In the method of going to 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. Sending to the base station in the RRC message, 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 device and the network, and improves the switching efficiency.

In order to achieve the above objective, as shown in FIG. 10, some embodiments of the present invention further provide a terminal device, where the terminal device is switched from a first network node to a second network node, where the first network node and the first network node A base station is connected, and the second network node is connected to the second base station, and the device includes: The receiving module 51 is configured to receive the identification information of the private network that is matched by the second network node and that is matched by the terminal device, and the sending module 52 is configured to: when the terminal device returns to the idle state, initiate the tracking area update, 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 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 the terminal device sent by the second network node after the terminal device is completed. The GUTI redistribution request carries the identification information of the private network that matches the terminal device; the second receiving submodule is configured to send a GUTI redistribution request response to the second network node, the GUTI reallocation The request response is used to indicate whether the GUTI redistribution is 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 the second network node during the terminal device switching process; The sub-module is configured to receive the tracking area update request receiving information sent by the second network node, where the tracking area update request receiving information carries the identification information of the private network that the terminal device matches the terminal device.

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

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

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

Specifically, the trigger information of the trigger tracking area update in the embodiment of the present invention with reference to FIG. 10 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 applying the foregoing method for redirecting a terminal device to a private network, and the foregoing All embodiments of the method are applicable to the terminal device and both achieve the same or similar benefits.

In order to better achieve the above object, some embodiments of the present invention provide a terminal device that is switched by a first network node to a second network node, where the first network node is connected to a first base station, 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 the bus interface, the memory is used to store the processor used when performing the operation The program and the data, when the processor calls and executes the program and the data stored in the memory, implements the following function module: the receiving module is configured to receive the second network node to send the matching with the terminal device The identification information of the private network; the sending module is configured to send the identification information of the private network to the second base station, the identifier of the private network, when the tracking device is updated 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 the 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 that applies the foregoing method for redirecting a terminal device to a private network, and all embodiments of the foregoing methods are applicable to the terminal device, and both can be Achieve the same or similar benefits.

In order to achieve the above purpose, 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 the terminal device, where The RRC message contains the identity of the private network that matches the terminal device. The determining module 72 is configured to determine, according to the identification information, a target network node corresponding to the identifier information, and a redirecting module 73, configured to redirect the terminal device to the target network node.

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

It should be noted that, the base station provided by some embodiments of the present invention is a base station that applies the foregoing method for redirecting a terminal device to a private network, and all the embodiments of the method for redirecting the terminal device to a private network are described above. Both are applicable to the base station and all achieve the same or similar benefits.

In order to achieve the above objectives, 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 The program and data used in the operation, when the processor calls and executes the program and data stored in the memory, implements the following function module: the message receiving module is configured to receive the RRC message sent by the terminal device. The RRC message includes the identification information of the private network that matches the terminal device, and the determining module is configured to determine, according to the identifier information, a target network node corresponding to the identifier information, and a redirecting module, configured to: The terminal device is redirected to the target network section point.

It should be noted that, the base station provided by some embodiments of the present invention is a base station that applies the foregoing method for redirecting a terminal device to a private network, and all the embodiments of the method for redirecting the terminal device to a private network are described above. Both are applicable to the base station and all achieve the same or similar benefits.

The above is an alternative embodiment of the present invention, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present invention. Retouching should also be considered as the scope of protection of the present invention.

11, 12 ‧ ‧ steps

Claims (20)

A method for redirecting a terminal device to a private network, wherein the terminal device is handed over by a first network node to a second network node, the first network node being connected to a first base station, the second network The node is connected to the second base station, and the method includes: receiving identification information of the private network that is sent by the second network node and matching the terminal device; and when the terminal device returns to the idle state and initiates the tracking area update, 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 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 a trigger information of a trigger tracking area update sent by the second network node, where the trigger information is used to trigger back to an idle state. The terminal device initiates a tracking area update. The method for redirecting a terminal device to a private network according to claim 1, wherein the step of receiving the identification information of the private network that is sent by the second network node and matching the terminal device comprises: at the terminal device After the handover is completed, receiving a Globally Unique Temporary Identity (GUTI) reallocation request of the terminal device sent by the second network node, where the GUTI redistribution request carries a private network that matches the terminal device. Identifying information; transmitting a GUTI re-allocation request response to the second network node, the GUTI re-allocation request response being used to indicate whether the GUTI reallocation is successful. A method for redirecting a terminal device to a private network as described in claim 1, wherein the connection Receiving, by the second network node, the identification information of the private network that matches the terminal device: sending, in the terminal device handover process, a tracking area update request to the second network node; receiving the second network The tracking area update request sent by the node receives the information, and the tracking area update request receiving information carries the identification information of the private network that the terminal device matches the terminal device. The method for redirecting a terminal device to a private network, as described in claim 3, wherein when the terminal device returns to an idle state and initiates a tracking area update, the identification information of the private network is sent to the second base. The step of the station includes: after the GUTI re-allocation succeeds, receiving a command sent by the second network node to release the resource of the terminal device, the terminal device returns to the idle state; initiates tracking area update, and is in the second base The Radio Resource Control (RRC) message sent by the station carries the 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 the identification information of the private network is sent to the second when the tracking device is updated after the terminal device returns to the idle state The step of the base station includes: after completing the update of the tracking area, receiving a command sent by the second network node to release the resource of the terminal device, the terminal device returns to the idle state; again initiates the tracking area update, and is in the second The RRC message sent by the base station carries the identification information of the private network that matches the terminal device. A method of redirecting a terminal device to a private network, as described in any one of claims 1-6, The identification information of the private network is a group identity of a Mobility Management Entity (MME) or a Serving GPRS (General Packet Radio Service) Support Node (SGSN). One or a combination of the group identifiers. The method for redirecting a terminal device to a private network, as described in claim 2, wherein the trigger information of the trigger tracking area update is a non-broadcast Tracking Area Identity (TAI) or a non-broadcast routing area identifier. (Routing Area Identity, RAI). A method for redirecting a terminal device to a private network, wherein the terminal device is handed over by a first network node to a second network node, the first network node being connected to a first base station, the second network The node is connected to the second base station, and the method includes: receiving, by the terminal device, a Radio Resource Control (RRC) message, where the RRC message includes the identification information of the private network that matches the terminal device; Identifying information, determining a target network node corresponding to the identification information; redirecting the terminal device to the target network node. 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 comprises: sending the initial information of the terminal device and the tracking area update request Giving the target network node control the terminal device to access the target network node. A terminal device, wherein the terminal device is handed over by 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, The terminal device includes: a processor; and a memory connected to the processor through a bus interface, the memory is used for the memory And storing the program and data used by the processor when performing the operation, when the processor calls and executes the program and the data stored in the memory, the processor executes the following program: receiving the second network node to send the The identification information of the private network matched by the terminal device; when the tracking device is updated 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 And configured to instruct the second base station to redirect the terminal device to a target network node corresponding to the identifier information. The terminal device of claim 11, wherein the processor is further configured to: receive trigger information of a trigger 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 Tracking area update. The terminal device of claim 11, wherein the processor is configured to: after the terminal device is switched, receive a Globally Unique Temporary Identity (GUTI) of the terminal device sent by the second network node. a reallocation request; wherein the GUTI reassignment request carries identification information of a private network that matches the terminal device; and sends a GUTI reassignment request response to the second network node, the GUTI reassignment request response is used to indicate a GUTI Whether the redistribution is successful. The terminal device of claim 11, wherein the processor is specifically configured to: send a tracking area update request to the second network node during the terminal device handover; and receive the tracking area sent by the second network node The update request receives information, and the tracking area update request receiving information carries the identification information of the private network that the terminal device matches the terminal device. The terminal device of claim 13, wherein the processor is specifically configured to: After the GUTI re-allocation succeeds, receiving a command sent by the second network node to release the resource of the terminal device, the terminal device returns to the idle state; initiating the tracking area update, and transmitting the radio resource to the second base station The Radio Resource Control (RRC) message carries the identification information of the private network that matches the terminal device. The terminal device of claim 14, wherein the processor is specifically configured to: after completing the tracking area update, receive a command sent by the second network node to release the resource of the terminal device, and the terminal device returns to the idle state. The tracking area update is initiated again, and the identification information of the private network matching the terminal device is carried in the RRC message sent to the second base station. 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, one or a combination of the group identifiers of the Support Node, SGSN. The terminal device of claim 12, wherein the trigger information of the trigger tracking area update is a non-broadcast Tracking Area Identity (TAI) or a non-broadcast 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 materials used by the processor when performing operations, when the processor calls and executes The program and the data stored in the memory, the processor performs the following procedure: receiving a Radio Resource Control (RRC) message sent by the terminal device, The RRC message includes the identification information of the private network that matches the terminal device. According to the identification information, the target network node corresponding to the identification information is determined; and the terminal device is redirected to the target network node. The base station according to claim 19, wherein the processor is specifically configured to: send the initial information of the terminal device and the tracking area update request to the target network node, and control the terminal device to access the target network node. .