CN107872785B - Terminal attachment method and system, and mobility management entity - Google Patents

Terminal attachment method and system, and mobility management entity Download PDF

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Publication number
CN107872785B
CN107872785B CN201610845322.5A CN201610845322A CN107872785B CN 107872785 B CN107872785 B CN 107872785B CN 201610845322 A CN201610845322 A CN 201610845322A CN 107872785 B CN107872785 B CN 107872785B
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core network
apn
target core
rat
determining
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CN107872785A (en
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朱红梅
曹磊
李培煜
王庆扬
张琳峰
林奕琳
吴敏清
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

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

Abstract

The invention provides a terminal attachment method and system and a mobility management entity, and relates to the field of Internet of things. The terminal attachment method comprises the following steps: acquiring an attachment request from a terminal, wherein the attachment request comprises an access point APN and wireless access type RAT information; determining a target core network according to the APN and the RAT, wherein the target core network comprises a public network core network, a narrowband Internet of things NB-IoT core network and/or an enhanced machine type communication (eMTC) core network; and accessing the terminal into the target core network. By the method, the target core network to be accessed by the terminal can be determined according to the APN and the RAT in the terminal attachment request, so that the public network or the Internet of things can be flexibly selected for accessing the terminal, or different types of Internet of things can be accessed, and a user can conveniently select different APNs and RATs according to requirements so as to access the required network.

Description

Terminal attachment method and system, and mobility management entity
Technical Field
The invention relates to the field of Internet of things, in particular to a terminal attachment method and system and a mobility management entity.
Background
When a terminal requests to access a core network, according to international standards, a system determines that a user accesses a public network or accesses a private network of the internet of things based on a user subscription attribute (UE Usage Type), but as the terminal and applications progress, the user's requirements for networks to which various terminals can access gradually increase.
Because different requirements are often imposed on the functions, performance and power consumption of the terminal in different application environments, the terminal is required to be capable of accessing different networks in different application occasions, and the existing mode of determining the network based on the user subscription attribute cannot realize the functions.
Disclosure of Invention
It is an object of the invention to propose a flexible scheme for selecting a network for a terminal.
According to an aspect of the present invention, a terminal attachment method is provided, including: acquiring an attach request from a terminal, wherein the attach request comprises APN (Access Point Name) and RAT (Radio Access Type) information; determining a target core network according to the APN and the RAT, wherein the target core network comprises a public network core network, an NB-IoT (NarrowBand-Internet of Things) core network and/or an eMTC (enhanced Machine Type Communication) core network; and accessing the terminal into the target core network.
Optionally, determining the target core network according to the APN and the RAT comprises: determining that the target core network is a public network core network or an Internet of things core network according to the APN; and when the target core network is the Internet of things core network, determining that the target core network is the NB-IoT core network or the eMTC core network according to the RAT information.
Optionally, determining, according to the APN, that the target core network is a public network core network or an internet of things core network includes:
if the APN is an Internet access point, determining that the target core network is a public network core network;
and if the APN is the Internet of things access point, determining that the target core network is the Internet of things core network.
Optionally, determining that the target core network is an NB-IoT core network or an eMTC core network according to the RAT information includes: if the RAT is NB-IoT, determining that the target core network is the NB-IoT core network; and if the RAT is WB-E-UTRAN (Wide Band-Evolved-UTRAN, broadband evolution terrestrial radio access network), determining that the target core network is eMTC.
Optionally, the method further comprises: acquiring user subscription information from an HSS (Home Subscriber Server), wherein the user subscription information comprises the corresponding relation between an APN (access point name), an RAT (radio access network) and a target core network; determining the target core network according to the APN and the RAT comprises: and determining a target core network according to the APN and the RAT based on the user subscription information.
By the method, the target core network to be accessed by the terminal can be determined according to the APN and the RAT in the terminal attachment request, so that the public network or the Internet of things can be flexibly selected for the terminal to be accessed, different Internet of things can be accessed, and a user can conveniently select different APNs and RATs according to requirements so as to access the required network.
According to another aspect of the present invention, there is provided an MME (Mobility Management Entity) including: the device comprises a request acquisition module, a request acquisition module and a processing module, wherein the request acquisition module is used for acquiring an attachment request from a terminal, and the attachment request comprises an APN and RAT information; the target core network determining module is used for determining a target core network according to the APN and the RAT, and the target core network comprises a public network core network, an NB-IoT core network and/or an eMTC core network; and the terminal access module is used for accessing the terminal into the target core network.
Optionally, the target core network determining module includes: the first selection unit is used for determining that the target core network is a public network core network or an Internet of things core network according to the APN; and the second selection unit is used for determining that the target core network is an NB-IoT core network or an eMTC core network according to the RAT information when the target core network is the Internet of things core network.
Optionally, the first selecting unit is configured to: if the APN is an Internet access point, determining that the target core network is a public network core network; and if the APN is the Internet of things access point, determining that the target core network is the Internet of things core network.
Optionally, the second selecting unit is configured to: if the RAT is NB-IoT, determining that the target core network is the NB-IoT core network; and if the RAT is WB-E-UTRAN, determining that the target core network is eMTC.
Optionally, the method further comprises: the subscription information acquisition module is used for acquiring user subscription information from the HSS, wherein the user subscription information comprises the corresponding relation between the APN, the RAT and the target core network; and the target core network determining module is used for determining the target core network according to the APN and the RAT based on the user subscription information.
The MME can determine a target core network to which the terminal is accessed according to the APN and the RAT in the terminal attachment request, so that the public network or the Internet of things can be flexibly selected for the terminal to be accessed, different types of Internet of things can be accessed, and users can conveniently select different APNs and RATs according to requirements to access the required network.
According to yet another aspect of the present invention, a terminal attachment system is proposed, comprising any one of the MMEs mentioned above; and the HSS is used for storing and providing user subscription information for the MME, wherein the user subscription information comprises the corresponding relation between the APN and the RAT and the target core network.
The system can determine the target core network to which the terminal is accessed according to the APN and the RAT in the terminal attachment request, thereby flexibly selecting the access public network or the Internet of things for the terminal or accessing different types of Internet of things, and facilitating the user to select different APNs and RATs according to the requirement so as to access the required network.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a flowchart of an embodiment of a terminal attachment method of the present invention.
Fig. 2 is a flowchart of another embodiment of a terminal attachment method of the present invention.
Fig. 3 is a flowchart of a terminal attachment method according to another embodiment of the present invention.
Fig. 4 is a schematic diagram of an embodiment of an MME of the present invention.
Fig. 5 is a schematic diagram of an embodiment of a target core network determination module in an MME according to the present invention.
FIG. 6 is a diagram of another embodiment of an MME of the present invention.
Fig. 7 is a schematic diagram of an embodiment of a terminal attachment system of the present invention.
Fig. 8 is a signaling flow diagram of an embodiment of the terminal attachment system of the present invention.
Detailed Description
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
A flowchart of one embodiment of the terminal attachment method of the present invention is shown in fig. 1.
In step 101, an attach request from a terminal is obtained, where the attach request includes APN and RAT information.
In step 102, a target core network is determined according to the APN and the RAT, and the target core network comprises a public network core network, an NB-IoT core network, an eMTC core network and the like. In one embodiment, the target core network is determined to be a public network core network or an internet of things core network according to the APN; and if the target core network is the Internet of things core network, further determining that the target core network is an NB-IoT core network or an eMTC core network according to the RAT.
In step 103, the terminal is accessed to the target core network.
By the method, the target core network to be accessed by the terminal can be determined according to the APN and the RAT in the terminal attachment request, so that the public network or the Internet of things can be flexibly selected for accessing the terminal, or different types of Internet of things can be accessed, and a user can conveniently select different APNs and RATs according to requirements so as to access the required network.
A flowchart of another embodiment of the terminal attachment method of the present invention is shown in fig. 2.
In step 201, an attach request from a terminal is obtained, where the attach request includes APN and RAT information.
In step 202, a target core network is determined based on the APN. In one embodiment, the user subscription information may be obtained from the HSS, and the user subscription information includes a correspondence between the APN and the target core network. If the APN is the Internet access point, determining that the target core network is a public network core network; and when the APN is the Internet of things access point, determining that the target core network is the Internet of things core network.
In step 203, if the target core network is a public network core network, step 204 is executed. If the target core network is not a public network core network, step 205 is performed.
In step 204, the terminal is accessed to the core network of the public network, and the user attachment request is processed by the MME of the public network.
In step 205, which internet of things core network the target core network is determined according to the RAT information. For example, when the RAT is NB-IoT, the target core network is determined to be an NB-IoT core network; and when the RAT is WB-E-UTRAN, determining that the target core network is eMTC core network.
In step 206, the user attach request is redirected to the target core network MME, and the target core network MME is accessed. If the target core network is the NB-IoT core network, the user attachment request is redirected to the NB-IoT core network MME, and the terminal accesses the NB-IoT core network. And if the target core network is the eMTC core network, redirecting the user attachment request to an eMTC core network MME, and accessing the terminal to the eMTC core network.
By the method, whether the target core network is a public network core network can be determined according to the APN information, and then which internet of things core network is specifically accessed is determined according to the RAT information, so that on one hand, the terminal can flexibly select the target core network, on the other hand, the access of the target core network can be more accurate, and therefore, the application and power saving modes can be adjusted according to the application scene.
A flowchart of yet another embodiment of the terminal attachment method of the present invention is shown in fig. 3.
In step 301, an attach request from a terminal is obtained, where the attach request includes APN and RAT information.
In step 302, user subscription information is obtained from the HSS, where the user subscription information includes a correspondence between an APN, an RAT, and a target core network.
In step 303, a target core network is determined according to the APN and the RAT based on the user subscription information, and the target core network includes a public network core network, an NB-IoT core network, and an eMTC core network.
In step 304, the terminal is accessed to the target core network.
By the method, the target core network can be determined based on the user subscription information acquired from the HSS, and the HSS can be additionally provided with the corresponding relation between APNs and RATs of different users and different core networks, so that real-time updating and application are facilitated.
A schematic diagram of an embodiment of an MME of the present invention is shown in fig. 4. The request access module 401 is configured to obtain an attach request from a terminal, where the attach request includes an APN and RAT information. The target core network determining module 402 is configured to determine a target core network according to the APN and the RAT, where the target core network includes a public network core network, an NB-IoT core network, and an eMTC core network. In one embodiment, the target core network is determined to be a public network core network or an internet of things core network according to the APN; and if the target core network is the Internet of things core network, further determining that the target core network is a narrowband Internet of things NB-IoT core network or an enhanced machine type communication (eMTC) core network according to the RAT. The terminal access module 403 is configured to access the terminal to the target core network.
The MME can determine a target core network to which the terminal is accessed according to the APN and the RAT in the terminal attachment request, so that the public network or the Internet of things can be flexibly selected for the terminal to be accessed, different types of Internet of things can be accessed, and users can conveniently select different APNs and RATs according to requirements to access the required network.
Fig. 5 is a schematic diagram of an embodiment of a target core network determination module in an MME according to the present invention. The first selecting unit 501 is configured to determine, according to the APN, that the target core network is a public network core network or an internet of things core network. In one embodiment, the user subscription information may be obtained from the HSS, and the user subscription information includes a correspondence between the APN and the target core network. If the APN is the Internet access point, determining that the target core network is a public network core network; and if the APN is the Internet of things access point, determining that the target core network is the Internet of things core network. The second selecting unit 502 is configured to determine that the target core network is an NB-IoT core network or an eMTC core network according to the RAT information, for example, if the target core network is an NB-IoT core network, the user attach request is redirected to an NB-IoT core network MME, and the terminal accesses the NB-IoT core network. And if the target core network is the eMTC core network, redirecting the user attachment request to an eMTC core network MME, and accessing the terminal to the eMTC core network. In one embodiment, the MME is configured with the identifier and address information of each network MME, so that the user attach request can be redirected to the target core network.
The MME can determine whether the target core network is a public network core network or not according to the APN information, and then determines which Internet of things core network is specifically accessed according to the RAT information, so that on one hand, the terminal can flexibly select the target core network, on the other hand, the access of the target core network can be more accurate, and therefore the application and power saving modes can be adjusted according to application scenes.
A schematic diagram of yet another embodiment of the MME of the present invention is shown in fig. 6. The structure and function of the request access module 601, the target core network determination module 602, and the terminal access module 603 are similar to those in the embodiment of fig. 4. The MME further includes a subscription information obtaining module 604, which is capable of obtaining user subscription information from the HSS, where the user subscription information includes a correspondence between an APN, an RAT, and a target core network. The target core network determining module 602 can determine the target core network according to the APN and the RAT based on the user subscription information.
The MME can determine a target core network based on the user subscription information acquired from the HSS, and the HSS can be additionally provided with corresponding relations between different user APNs and RATs and different core networks, so that real-time updating and application are facilitated.
A schematic diagram of one embodiment of the terminal attachment system of the present invention is shown in fig. 7. The MME 701 may determine, according to the APN and the RAT in the attach request, a target core network to which the terminal is to access; the HSS 702 may store and provide the user subscription information to the MME, where the user subscription information includes a correspondence between the APN and the RAT and the target core network.
The system can determine the target core network to which the terminal is accessed according to the APN and the RAT in the terminal attachment request, thereby flexibly selecting the access public network or the Internet of things for the terminal or accessing different types of Internet of things, and facilitating the user to select different APNs and RATs according to the requirement so as to access the required network.
A signaling flow diagram of one embodiment of the terminal attachment system of the present invention is shown in fig. 8.
In 801, a terminal sends a user attach request to a public network MME. The user attach request includes APN and RAT information.
In 802, the public network MME requests the HSS for user subscription information and obtains the user subscription information from the HSS. The user subscription information includes the corresponding relation between the APN, the RAT and the target core network.
In 803, based on the user subscription information, it is determined that the user accesses the public network or the internet of things according to the APN information. And if the access to the core network of the public network is determined, the public network MME processes the attachment request and the later operation of the user, and the process is ended. If the access to the private network of the internet of things is determined, 804 is executed.
In 804, the public network MME performs secondary determination through the RAT, and determines the internet of things accessed by the user. If the APN is determined to be WB-E-UTRAN, executing 805; if the APN is determined to be NB-IoT, then 806 is performed.
In 805, the attach request of the user is redirected to the NB-IOT core network MME.
In 806, the attach request of the user is redirected to the eMTC core network MME.
In the system, the HSS can be additionally provided with the corresponding relations between different user APNs and RATs and different core networks, so that the application is convenient to implement; whether the target core network is a public network core network is determined according to the APN information, and then which internet of things core network is specifically accessed is determined according to the RAT information, so that on one hand, the terminal can flexibly select the target core network, and on the other hand, the access of the target core network is more accurate, and therefore, the application and the power saving mode can be adjusted according to the application scene.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.

Claims (7)

1. A terminal attachment method, comprising:
acquiring an attachment request from a terminal, wherein the attachment request comprises an Access Point (APN) and wireless access type (RAT) information, and a user selects the APN and the RAT according to requirements;
determining a target core network according to the APN and the RAT, wherein the target core network comprises a public network core network, a narrowband Internet of things (NB-IoT) core network and/or an enhanced machine type communication (eMTC) core network, and the method comprises the following steps:
determining the target core network to be a public network core network or an Internet of things core network according to the APN;
when the target core network is the internet of things core network, determining that the target core network is an NB-IoT core network or an eMTC core network according to the RAT information, including: if the RAT is NB-IoT, determining that the target core network is the NB-IoT core network; if the RAT is a broadband evolution terrestrial radio access network WB-E-UTRAN, determining the target core network as the eMTC;
and accessing the terminal to the target core network.
2. The method of claim 1, wherein the determining, according to the APN, that the target core network is a public network core network or an internet of things core network comprises:
if the APN is an Internet access point, determining that the target core network is the public network core network;
and if the APN is the Internet of things access point, determining that the target core network is the Internet of things core network.
3. The method of claim 1, further comprising:
acquiring user subscription information from a Home Subscriber Server (HSS), wherein the user subscription information comprises the APN, the corresponding relation between the RAT and a target core network;
the determining a target core network according to the APN and the RAT comprises: and determining a target core network according to the APN and the RAT based on the user subscription information.
4. A mobility management entity, MME, comprising:
the system comprises a request acquisition module, a request acquisition module and a processing module, wherein the request acquisition module is used for acquiring an attachment request from a terminal, the attachment request comprises an Access Point (APN) and wireless access type (RAT) information, and a user selects the APN and the RAT according to requirements;
a target core network determining module, configured to determine a target core network according to the APN and the RAT, where the target core network includes a public network core network, a narrowband internet of things NB-IoT core network, and/or an enhanced machine type communication eMTC core network, and includes:
the first selection unit is used for determining that the target core network is a public network core network or an Internet of things core network according to the APN;
a second selecting unit, configured to determine, when the target core network is the internet of things core network, that the target core network is an NB-IoT core network or an eMTC core network according to the RAT information, including: if the RAT is NB-IoT, determining that the target core network is the NB-IoT core network; if the RAT is a broadband evolution terrestrial radio access network WB-E-UTRAN, determining the target core network as the eMTC;
and the terminal access module is used for accessing the terminal into the target core network.
5. The MME of claim 4, wherein the first selecting unit is configured to:
if the APN is an Internet access point, determining that the target core network is the public network core network;
and if the APN is the Internet of things access point, determining that the target core network is the Internet of things core network.
6. The MME of claim 4, further comprising:
a subscription information acquisition module, configured to acquire user subscription information from a home subscriber server HSS, where the user subscription information includes a correspondence between the APN, the RAT, and a target core network;
and the target core network determining module is used for determining a target core network according to the APN and the RAT based on the user subscription information.
7. A terminal attachment system, characterized by comprising the mobility management entity MME according to any one of claims 4 to 6; and the combination of (a) and (b),
and the home subscriber server HSS is used for storing and providing user subscription information for the MME, wherein the user subscription information comprises an access point APN and a corresponding relation between a radio access type RAT and a target core network.
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CN110139394B (en) * 2019-06-06 2021-06-18 超讯通信股份有限公司 Method for accessing different operators and convergence gateway

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