WO2016177106A1

WO2016177106A1 - Dedicated core network selection method and device

Info

Publication number: WO2016177106A1
Application number: PCT/CN2016/076278
Authority: WO
Inventors: 高音; 梁爽
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-07-17
Filing date: 2016-03-14
Publication date: 2016-11-10
Also published as: CN106358270A

Abstract

A dedicated core network selection method and device. The method comprises: a core network device obtains the usage type information of a user equipment (UE); according to the usage type information of the UE, the core network device determines whether to select a dedicated core network for the UE; upon determining to select a dedicated core network for the UE, the core network device notifies a home eNB gateway to select a dedicated core network for the UE.

Description

Dedicated core network selection method and device

Technical field

This paper relates to the field of selection of dedicated core networks, and in particular to a method and apparatus for selecting a dedicated core network.

Background technique

In order to provide users with higher service rates and lower the cost of using high-speed services, and also to compensate for the lack of coverage of users' home or office in existing distributed cellular wireless communication systems, wireless communication network operators can modify base stations. A wireless broadband access device that is easy to carry and install, and is provided for use by the user in a home or office. The home base station is a small, low-power base station that is mainly used in small indoor areas such as homes and offices. The home base station is connected to the mobile operator core network through a cable, a DSL (Digital Subscriber Loop) or a fiber-optic access device such as an optical fiber to provide an access service based on the wireless mobile communication network for a specific user. It is an effective complement to related network deployments and can effectively improve indoor voice and high-speed data service coverage. It has many advantages, such as low cost, low power, simple access, plug and play, saving backhaul, easy compatibility with related terminals, and improved network coverage.

The home base station in the LTE (Long Term Evolution) system defined by the Third Generation Partnership Projects (3GPP) standards organization is called HeNB (home eNB), while in the 3G system, the home base station is called For HNB (Home NodeB). The HeNB is used as an example to describe the system architecture. The functions supported by the HeNB are basically the same as those of the eNB. The process between the HeNB and the EPC (Evolved Packet Core) and the process between the eNB and the EPC are basically the same. Since the deployment of the HeNB is usually not planned by the mobile operator's network, and the coverage is small and numerous, in order to more conveniently manage and support a larger number of HeNBs, E-UTRAN (Evolved UTRAN, Evolved Universal Land-Based Wireless) Under the access network architecture, it is also possible to introduce a new network element, HeNB GW (Home eNB Gateway, HeNB gateway), between the HeNB and the EPC S1 connection, and the HeNB can connect to the mobility management entity through the HeNB GW as the S1 proxy ( Mobility Management Entity (MME).

At the same time, with the development of communication technology, machine type communication (Machine-Type Communications, MTC)\Device-to-Device (D2D) and other special-purpose terminals are introduced. For these users, a dedicated core network can be set up and a dedicated core network (DECOR) function can be introduced. Operators can manage these special-purpose terminal devices in a dedicated core network and distinguish them from ordinary users to minimize the impact on ordinary users.

The attribute information of the terminal for the special purpose is stored in the Home Subscriber Server (HSS). After the core network obtains the special use attribute of the terminal, the terminal can select a suitable dedicated core network for the terminal, and the dedicated core network is dedicated. Group flags to identify. In order to relocate the UE (User Equipment) to the dedicated core network, the core network sends a reroute message to the base station, and the base station passes the local NNSFF (NAS node selection function). And the dedicated core network identification information carried in the relocation message, and the terminal selects a new core network to initiate the initial transmission of the UE. However, in the scenario where the home base station gateway exists, the home base station gateway in the related art does not process the UE-related control plane message, so how to implement the above functions is a problem that needs to be solved currently.

Summary of the invention

The technical problem to be solved by the present invention is to provide a method and a device for selecting a dedicated core network, so as to implement a home base station gateway to select a dedicated core network for the UE.

In order to solve the above technical problem, the present invention provides the following technical solutions:

A method of selecting a dedicated core network, including:

The core network device acquires usage type information of the user equipment UE;

Determining, by the core network device, whether to select a dedicated core network for the UE according to the usage type information of the UE;

After determining that the UE selects a dedicated core network, the core network device notifies the home base station gateway to select a dedicated core network for the UE.

Optionally, the step of the core network device notifying the home base station gateway to select the dedicated core network for the UE includes:

Sending, by the redirecting message, the core network device to the home base station gateway as the UE Select the information of the dedicated core network.

Optionally, the information for selecting the dedicated core network for the UE includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the non-access stratum protocol data unit NAS PDU, the core network relocation information, and The identity information of the UE.

Optionally, the core network relocation information includes: a group identity of the mobility management entity MME, a network resource identifier Null-NR, or a serving GPRS support node SGSN group flag.

Optionally, the identity information of the UE includes: a globally unique temporary UE identity GUTI or a packet-temporary identifier P-TMSI.

Optionally, the core network element device is an MME in an LTE system, and the core network device is an SGSN in a 3G system.

A method of selecting a dedicated core network, including:

The home base station gateway acquires information for selecting a dedicated core network for the UE from the core network device;

The home base station gateway sends a core network relocation indication message to the base station according to the information that the UE selects the dedicated core network;

Receiving, by the home base station gateway, a UE initial direct transmission message from the base station;

After the home base station gateway receives the initial direct transmission message sent by the base station, if the received initial direct transmission message of the UE is a message sent by the dedicated core network, the new core selected according to the local UE is selected. The network device sends the initial direct transmission message of the UE to the new core network device.

Optionally, the core network relocation indication message and/or the initial transmission direct message of the UE includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, the core network relocation information, and the UE. The identity identification information, the core network relocation indication cell, and the globally unique MME flag GUMMEI information selected by the home base station gateway for the UE.

A selection device of a dedicated core network, comprising a first acquisition module, a determination module and a notification module, wherein

The first acquiring module is configured to: acquire usage type information of the UE;

The determining module is configured to: determine, according to the usage type information of the UE, whether to select a dedicated core network for the UE;

The notification module is configured to: after the determining module determines to select a dedicated core network for the UE, notify the home base station gateway to select a dedicated core network for the UE.

Optionally, the notification module is configured to notify the home base station gateway to select a dedicated core network for the UE according to the following manner:

The information of selecting a dedicated core network for the UE is sent to the home base station gateway by using a redirect message.

Optionally, the information for selecting the dedicated core network for the UE includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, the core network relocation information, and the identity information of the UE.

Optionally, the core network relocation information includes: a group flag of the MME, a Null-NRI or an SGSN group flag.

Optionally, the identity information of the UE includes: GUTI or P-TMSI.

Optionally, the apparatus is located in the MME in an LTE system, the apparatus being located in the SGSN in the 3G system.

A selection device of a dedicated core network, comprising a second acquisition module, a transmission module, a receiving module and a processing module, wherein

The second obtaining module is configured to: obtain, from the core network device, information for selecting a dedicated core network for the UE;

The sending module is configured to: send the core network relocation indication message to the base station according to the information that the UE selects the dedicated core network;

The receiving module is configured to: receive, from the base station, an initial direct transmission message of the UE;

The processing module is configured to: after receiving the initial direct transmission message sent by the base station, if the received initial direct transmission message of the UE is a message sent by a dedicated core network, And sending, according to the new core network device selected by the UE locally, the initial direct transmission message of the UE to the new core network device.

Optionally, the core network relocation indication message and/or the initial transmission direct message of the UE includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, the core network relocation information, and the UE. The identity identification information, the core network relocation indication cell, and the GUMMEI information selected by the home base station gateway for the UE.

The embodiment provided by the present invention selects a dedicated core network for the UE with a special purpose by controlling the home base station gateway, so that the home base station gateway selects a dedicated core network for the UE, thereby avoiding a large number of special-purpose user equipment pairs existing in the network. The impact of common user equipment, and targeted management of user equipment with special purposes, improve management accuracy.

In addition, the home base station gateway can reduce the number of interfaces between the home base station and the core network, and reduce the processing load of the core network. Enables efficient management of a large number of low power nodes. Therefore, the DOCER function is implemented under the home base station gateway, and the modification of the access network is also reduced, thereby improving network compatibility.

BRIEF abstract

FIG. 1 is a flowchart of a method for selecting a dedicated core network according to an embodiment of the present invention;

2 is a flowchart of another method for selecting a dedicated core network according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a network of a home base station according to an embodiment of the present disclosure;

4 is a flowchart of a method for selecting a dedicated core network according to Embodiment 1 of the present invention;

5 is a flowchart of a method for selecting a dedicated core network according to Embodiment 2 of the present invention;

6 is a flowchart of a method for selecting a dedicated core network according to Embodiment 3 of the present invention;

7 is a flowchart of a method for selecting a dedicated core network according to Embodiment 4 of the present invention;

FIG. 8 is a structural diagram of a device for selecting a dedicated core network according to an embodiment of the present invention;

FIG. 9 is a structural diagram of another apparatus for selecting a dedicated core network according to an embodiment of the present invention.

Preferred embodiment of the invention

The following is an overview of the topics detailed in this document. This summary is not intended to limit the claims The scope of protection.

The invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

FIG. 1 is a flowchart of a method for selecting a dedicated core network according to an embodiment of the present invention. The method shown in Figure 1 includes:

Step 101: The core network device acquires usage type information of the UE.

Wherein, the type of use may be various special-purpose information such as MTC or D2D;

Step 102: The core network device determines, according to the usage type information of the UE, whether to select a dedicated core network for the UE.

Specifically, in order to enable the UE with special purpose to fully utilize its function, a dedicated core network matching the use may be selected for the UE;

Step 103: After determining that the UE selects a dedicated core network, the core network device notifies the home base station gateway to select a dedicated core network for the UE.

The method provided by the present invention notifies the home base station gateway to select a dedicated core network for the UE with special purpose, and implements the home base station gateway to select a dedicated core network for the UE, thereby avoiding a large number of special-purpose user equipments existing in the network. The impact of common user equipment, and targeted management of user equipment with special purposes, improve management accuracy.

FIG. 2 is a flowchart of another method for selecting a dedicated core network according to an embodiment of the present invention. The method shown in Figure 2 includes:

Step 201: The home base station gateway acquires, from the core network device, information for selecting a dedicated core network for the UE.

Step 202: The home base station gateway selects a information of a dedicated core network for the UE, and selects a new dedicated core network device for the UE to perform an access operation.

The method provided by the present invention provides a special core network for the UE with a special purpose, and the home base station gateway selects a dedicated core network for the UE, thereby avoiding a large number of special-purpose user equipments existing in the network. The impact of user equipment, and targeted management of user equipment with special purposes, improving management accuracy.

The method provided by the embodiment of the present invention is further described below:

First, explain the operations performed by the core network device:

The information that the home base station gateway notifies the UE to select the dedicated core network is sent by using a redirect message.

It should be noted that the redirect message is used in the related art to transmit information for selecting the dedicated core network information for the UE between the core network device and the base station. In the embodiment of the present invention, the message is also used for transmitting the UE to select a dedicated core. The information of the network information, but the difference is that the message is applied between the core network device and the home base station gateway. It is simple and convenient to use the information transmitted in the related art to transmit information.

In addition, the information that informs the home base station gateway to select the dedicated core network for the UE includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, and the non-access stratum NAS PDU (Protocol Data Unit) ), core network relocation information and identity identification information of the UE.

The core network relocation information includes a group identifier of the mobility management entity MME or a Network Resource Identifier/SGSN group identifier.

The identity information of the UE includes a globally unique temporary UE identity GUTI or a P-TMSI (Packet Temporary Mobile Subscriber Identity).

It should be noted that the core network element device is an MME in an LTE system, and the core network device is an SGSN in a 3G system.

The following describes the operations performed by the home base station gateway:

The home base station gateway selects a dedicated core network device for the UE according to the information, and selects a new dedicated core network device for the UE to perform an access operation, including:

After the home base station gateway receives the initial direct transmission message sent by the base station, if the received initial direct transmission message of the UE is a message sent by the dedicated core network, the new core network device selected according to the local UE is selected. And sending the initial direct transmission message of the UE to the new core network device.

In the embodiment of the present invention, the home base station gateway requests the base station to access the new dedicated core network, so that the UE accesses the new dedicated core network, and implements targeted management of the UE.

Specifically, the home base station gateway acquires core network relocation information and/or identity information of the UE from the information for selecting a dedicated core network for the UE; and according to the core network relocation information and/or the identity of the UE The identification information is sent to the base station by using a non-access stratum node selection function to send a core network relocation indication message.

It can be seen from the above that the home base station gateway realizes the non-access stratum node selection function by acquiring the above information, and has the function of redirecting the dedicated core network.

The core network relocation indication message and/or the initial IP address of the UE include one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, the core network relocation information, The UE's identity information, the core network relocation indicator, and the home base station gateway are the GUMMEI (Globally Unique MME Identifier) information selected by the UE.

The above method will be further described below by way of a specific embodiment:

Specific embodiment 1

The home base station gateway acts as an interface proxy between the base station and the core network, and is respectively connected to the base station and the core network. The schematic diagram of the network structure of the home base station is shown in FIG. 3; the control plane interface signaling is filtered and processed to ensure that the UE re-accesses the newly selected dedicated Core Network.

As shown in FIG. 4, the specific steps of the specific embodiment 1 are as follows:

The home base station gateway implements the NNSF function, but does not notify the base station of the result of the dedicated core network selection.

Step 401: The core network element device determines to select a dedicated core network for the UE by using the obtained UE usage type information. The core network element device sends a redirect message to the home base station gateway, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, and the core network relocation information (the MME group flag or the Null- NRI/SGSN group flag), GUTI/P-TMSI information of the UE.

Step 402: After receiving the message, the home base station gateway implements the NNSF function locally according to the carried core network relocation information and/or the UE's GUTI/P-TMSI information, and selects a new dedicated UE for the UE. The core network element device is accessed.

Step 403: The home base station gateway sends a core network relocation indication message to the base station, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, and the core network relocation information (the MME group flag) Or the Null-NRI/SGSN group flag), the GUTI/P-TMSI information of the UE.

Step 404: After receiving the core network relocation indication message, the base station re-initiates the initial direct transmission message of the UE, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, and the core network relocation. Information (MME group flag or Null-NRI/SGSN group flag), GUTI/P-TMSI information of the UE.

Step 405: After receiving the initial direct transmission message sent by the base station, the home base station gateway determines that the message is the initial direct transmission message sent by the UE after the dedicated core network is redirected, and then selects a new core network element device locally selected by the UE. , routing the message to the new core network element device.

Specific embodiment 2

As shown in FIG. 5, the specific steps of the specific embodiment 2 are as follows:

Step 501: The core network element device determines to select a dedicated core network for the UE by using the obtained UE usage type information. The core network element device sends a redirect message to the home base station gateway, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, and the core network relocation information (the MME group flag or the Null- NRI/SGSN group flag), GUTI/P-TMSI information of the UE.

Step 502: After receiving the message, the home base station gateway implements the NNSF function locally according to the carried core network relocation information and/or the UE's GUTI/P-TMSI information, and selects a new dedicated core network element device for the UE to access.

Step 503: The home base station gateway sends a core network relocation indication message to the base station, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, and the core network relocation indication information element.

Step 504: After receiving the core network relocation indication message, the base station re-initiates the initial direct transmission message of the UE, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, and the core network relocation. Indicate the cell.

Step 505: After receiving the initial direct transmission message sent by the base station, the home base station gateway determines that the message is an initial direct transmission message sent by the UE after the dedicated core network is redirected, and then selects a new core network element device that is locally selected by the UE. , routing the message to the new core network element device.

Specific embodiment 3

As shown in FIG. 6, the specific steps of the specific embodiment 3 are as follows:

The home base station gateway implements the NNSF function and notifies the base station of the result of the dedicated core network selection.

Step 601: The core network element device determines to select a dedicated core network for the UE by using the obtained UE usage type information. The core network element device sends a redirect message to the home base station gateway, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, and the core network relocation information (the MME group flag or the Null- NRI/SGSN group flag), GUTI/P-TMSI information of the UE.

Step 602: After receiving the message, the home base station gateway implements the NNSF function locally according to the carried core network relocation information and/or the UE's GUTI/P-TMSI information, and selects a new dedicated core network element device for the UE to access.

Step 603: The home base station gateway sends a core network relocation indication message to the base station, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, and the core network relocation information (the MME group flag) Or the Null-NRI/SGSN group flag), the GUTI/P-TMSI information of the UE, and the home base station gateway is the GUMMEI information selected by the UE.

Step 604: After receiving the core network relocation indication message, the base station re-initiates the initial direct transmission message of the UE, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, and the core network relocation. Information (MME group flag or Null-NRI/SGSN group flag), GUTI/P-TMSI information of the UE, and the home base station gateway is the GUMMEI information selected by the UE.

Step 605: After receiving the initial direct transmission message sent by the base station, the home base station gateway routes the message to the new core network element device according to the GUMMEI information carried in the message.

Specific embodiment 4

As shown in FIG. 7, the specific steps of the specific embodiment 4 are as follows:

Step 701: The core network element device determines to select a dedicated core network for the UE by using the obtained UE usage type information. The core network element device sends a redirect message to the home base station gateway, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, and the core network relocation information (the MME group flag or the Null- NRI/SGSN group flag), GUTI/P-TMSI information of the UE.

Step 702: After receiving the message, the home base station gateway implements the NNSF function locally according to the carried core network relocation information and/or the UE's GUTI/P-TMSI information, and selects a new dedicated core network element device for the UE to access.

Step 703: The home base station gateway sends a core network relocation indication message to the base station, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, and the home base station gateway selects the GUMMEI information for the UE. .

Step 704: After receiving the core network relocation indication message, the base station re-initiates the initial direct transmission message of the UE, where the message includes one or more of the following information: the S1 interface uniquely identifies the identifier information of the UE, and the NAS PDU and the home base station gateway are The GUMMEI information selected by the UE.

Step 705: After receiving the initial direct transmission message sent by the base station, the home base station gateway routes the message to the new core network element device according to the GUMMEI information carried in the message.

FIG. 8 is a structural diagram of a device for selecting a dedicated core network according to an embodiment of the present invention. The device shown in Figure 8 includes:

The first obtaining module 801 is configured to: acquire usage type information of the UE;

The determining module 802 is configured to: determine, according to the usage type information of the UE, whether to select a dedicated core network for the UE;

The notification module 803 is configured to: notify the family after determining to select the dedicated core network for the UE The base station gateway selects a dedicated core network for the UE.

The information that is notified by the notification module 803 for selecting the dedicated core network for the UE is sent by using a redirect message.

The information indicating that the home base station gateway selects the dedicated core network for the UE includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, the core network relocation information, and the identity information of the UE. .

The core network relocation information includes a group flag of the MME or a Null-NRI or SGSN group flag.

The identity information of the UE includes a GUTI or a P-TMSI.

The device is located in the MME in the LTE system, and the device is located in the SGSN in the 3G system.

The device provided by the present invention notifies the home base station gateway to select a dedicated core network for the UE with special purpose, and implements the home base station gateway to select a dedicated core network for the UE, thereby avoiding a large number of special-purpose user equipments existing in the network. The impact of common user equipment, and targeted management of user equipment with special purposes, improve management accuracy.

FIG. 9 is a structural diagram of another apparatus for selecting a dedicated core network according to an embodiment of the present invention. The device shown in Figure 9 includes:

The second obtaining module 901 is configured to: obtain, from the core network device, information for selecting a dedicated core network for the UE;

The sending module 902 is configured to: send the core network relocation indication message to the base station according to the information that the UE selects the dedicated core network;

The receiving module 903 is configured to: receive, from the base station, an initial direct transmission message of the UE;

The processing module 904 is configured to: after receiving the initial direct transmission message sent by the base station, if the received initial direct transmission message of the UE is a message sent by the dedicated core network, the new one selected according to the local UE The core network device sends the initial direct transmission message of the UE to the new core network device.

The core network relocation indication message and/or the initial transmission message of the UE includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, the core network relocation information, and the identity of the UE. The identity information, the core network relocation indication cell, and the GUMMEI information selected by the home base station gateway for the UE.

An embodiment of the device provided by the embodiment of the present invention, for a UE with special purpose, the home base station gateway selects a dedicated core network for the home base station gateway to select a dedicated core network for the UE, thereby avoiding a large number of special-purpose user equipments existing in the network. The impact on common user equipment, and targeted management of user equipment with special purposes, improve management accuracy.

The embodiment of the invention further discloses a computer program, comprising program instructions, when the program instruction is executed by the core network device, so that the core network device can perform the selection method of the dedicated core network on any of the core network device sides.

The embodiment of the invention also discloses a carrier carrying the computer program.

The embodiment of the invention further discloses a computer program, comprising program instructions, when the program instruction is executed by the home base station gateway, so that the home base station gateway can perform the selection method of the dedicated core network on the gateway side of any of the above-mentioned home base stations.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, the invention is not limited to any specific combination of hardware and software.

The devices/function modules/functional units in the above embodiments may be implemented by using a general-purpose computing device, which may be concentrated on a single computing device or distributed among multiple computing devices. On the network.

When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Industrial applicability

Therefore, the present invention has strong industrial applicability.

Claims

A method of selecting a dedicated core network, including:

The core network device acquires usage type information of the user equipment UE;

Determining, by the core network device, whether to select a dedicated core network for the UE according to the usage type information of the UE;

After determining that the UE selects a dedicated core network, the core network device notifies the home base station gateway to select a dedicated core network for the UE.
The method for selecting a dedicated core network according to claim 1, wherein the step of the core network device notifying the home base station gateway to select a dedicated core network for the UE comprises:

The core network device sends, by using a redirect message, information about selecting a dedicated core network for the UE to the home base station gateway.
The method for selecting a dedicated core network according to claim 2, wherein the information for selecting the dedicated core network for the UE includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, and the non-access layer Protocol data unit NAS PDU, core network relocation information, and identity information of the UE.
The method for selecting a dedicated core network according to claim 3, wherein the core network relocation information comprises: a group identity of the mobility management entity MME, a network resource identifier Null-NR or a serving GPRS support node SGSN group flag.
The method for selecting a dedicated core network according to claim 3, wherein the identity identification information of the UE comprises: a globally unique temporary UE identity GUTI or a packet-temporary identification code P-TMSI.
The method for selecting a dedicated core network according to claim 1, wherein the core network element device is an MME in an LTE system, and the core network device is an SGSN in a 3G system.
A method of selecting a dedicated core network, including:

The home base station gateway acquires information for selecting a dedicated core network for the UE from the core network device;

The home base station gateway sends a core network relocation indication message to the base station according to the information that the UE selects the dedicated core network;

Receiving, by the home base station gateway, a UE initial direct transmission message from the base station;

After the home base station gateway receives the initial direct transmission message sent by the base station, if the received initial direct transmission message of the UE is a message sent by the dedicated core network, the new core selected according to the local UE is selected. The network device sends the initial direct transmission message of the UE to the new core network device.
The method for selecting a dedicated core network according to claim 7, wherein the core network relocation indication message and/or the initial transmission of the UE message comprises one or more of the following information: the S1 interface uniquely identifies the UE's flag. The information, the NAS PDU, the core network relocation information, the identity information of the UE, the core network relocation indication cell, and the globally unique MME flag GUMMEI information selected by the home base station gateway for the UE.
A selection device of a dedicated core network, comprising a first acquisition module, a determination module and a notification module, wherein

The first acquiring module is configured to: acquire usage type information of the UE;

The determining module is configured to: determine, according to the usage type information of the UE, whether to select a dedicated core network for the UE;

The notification module is configured to: after the determining module determines to select a dedicated core network for the UE, notify the home base station gateway to select a dedicated core network for the UE.
The apparatus for selecting a dedicated core network according to claim 9, wherein the notification module is configured to notify the home base station gateway to select a dedicated core network for the UE as follows:

The information of selecting a dedicated core network for the UE is sent to the home base station gateway by using a redirect message.
The apparatus for selecting a dedicated core network according to claim 10, wherein the information for selecting the dedicated core network for the UE comprises one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, and the core. Network relocation information and identity information of the UE.
The apparatus for selecting a dedicated core network according to claim 11, wherein the core network relocation information comprises: a group flag of the MME, a Null-NRI or an SGSN group flag.
The apparatus for selecting a dedicated core network according to claim 11, wherein the identity information of the UE comprises: GUTI or P-TMSI.
The selection device of the dedicated core network according to claim 9, wherein the device is located in the MME in the LTE system, and the device is located in the SGSN in the 3G system.
A selection device of a dedicated core network, comprising a second acquisition module, a transmission module, a receiving module and a processing module, wherein

The second obtaining module is configured to: obtain, from the core network device, information for selecting a dedicated core network for the UE;

The sending module is configured to: send the core network relocation indication message to the base station according to the information that the UE selects the dedicated core network;

The receiving module is configured to: receive, from the base station, an initial direct transmission message of the UE;

The processing module is configured to: after receiving the initial direct transmission message sent by the base station, if the received initial direct transmission message of the UE is a message sent by the dedicated core network, according to the local And sending, by the new core network device selected by the UE, the initial direct transmission message of the UE to the new core network device.
The apparatus for selecting a dedicated core network according to claim 15, wherein the core network relocation indication message and/or the initial transmission of the UE message comprises one or more of the following information: the S1 interface uniquely identifies the UE's flag. The information, the NAS PDU, the core network relocation information, the identity information of the UE, the core network relocation indication cell, and the GUMMEI information selected by the home base station gateway for the UE.