CN108616962B - Data network information processing method and device and terminal - Google Patents
Data network information processing method and device and terminal Download PDFInfo
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- CN108616962B CN108616962B CN201611153360.0A CN201611153360A CN108616962B CN 108616962 B CN108616962 B CN 108616962B CN 201611153360 A CN201611153360 A CN 201611153360A CN 108616962 B CN108616962 B CN 108616962B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
Abstract
The invention discloses a data network information processing method, which comprises the following steps: the network side sends data network information to a terminal, the terminal receives the data network information, the data network information is used for the terminal to select a connected data network according to the data network information, and the data network information at least comprises: the priority of the data network, or whether the data network is the service information provided by the local data network or the data network; the invention also discloses a data network information processing device and a terminal.
Description
Technical Field
The present invention relates to the field of data processing technologies, and in particular, to a method, an apparatus, and a terminal for processing data network information.
Background
In the prior art, a schematic diagram of an architecture in which a terminal device (UE) is connected to a core network from a 5G wireless network is shown in fig. 1, where the UE is simultaneously connected to data networks providing different services, such as: mobile Edge Computing Server (Edge Computing Server) and remote network (Internet) services. The UE accesses to the next Generation core network from the next Generation wireless network and a non-3 rd Generation Partnership Project (3 GPP) access network, and as shown in fig. 2, the UE connects to the data network from the 3GPP and non-3GPP access networks, respectively, and accordingly, the UE can simultaneously connect to the data networks providing different services.
In the Network architecture shown in fig. 1 and fig. 2, a User Plane Gateway (User Plane Gateway, UPGW) or a User Plane Network Function (User Plane Network Function, UPNF) is responsible for forwarding a service packet between a UE and a data Network, and configures an Internet Protocol (IP) parameter used for accessing the data Network for the UE, such as: IP addresses, routing information, Domain Name System (DNS) server information, and the like; that is, when the UE is connected to multiple data networks, multiple sets of IP parameters are generated, and when an application in the UE operates to initiate access, the UE may face the following problems; firstly, an application server or platform to which an application run by the UE needs to be connected may be located in a local data network to which the UE is connected, and some may be located in a remote data network, and if the application server or platform randomly selected by the UE is located in the remote data network, the UE needs to initiate access to a server of the remote data network, so that an experience of preferentially accessing the local network is missed; secondly, in a specific service data network such as private service, the related domain names are also globally unique, and the domain names can only be queried through a DNS server issued by the data network; at this time, if the UE preferentially selects a DNS server of another data network to query the domain name, the correct service data network can be selected to access after a plurality of DNS server query failures.
Disclosure of Invention
In view of this, embodiments of the present invention are intended to provide a method, an apparatus, and a terminal for processing data network information, so that the terminal can quickly select a correct data network to be connected.
The technical scheme of the embodiment of the invention is realized as follows:
the embodiment of the invention provides a data network information processing method, which comprises the following steps: the network side sends the data network information to the terminal; the data network information is used for the terminal to select the connected data network according to the data network information, and the data network information at least comprises: the priority of the data network, or whether the data network is the service information provided by the local data network or the data network.
In the above solution, the service information at least includes: one or more domain names, or network names, or names of services provided by the network.
In the above scheme, when the network element at the network side is the network discovery and selection function, the sending the data network information to the terminal includes:
the network discovery and selection function sends network selection policy or routing policy information carrying data network information to the terminal.
In the foregoing solution, when a network element of a network side is a Control Plane Network Function (CPNF), the network side sends data network information to a terminal, including:
one or more Protocol Data Unit (PDU) session establishment request messages sent by the CPNF receiving terminals;
and the CPNF sends a PDU session establishment response message carrying the data network information to the terminal.
In the above scheme, the PDU session establishment request message sent by the CPNF receiving terminal includes:
the ngPDG receives the PDU session establishment request message which is sent by the terminal and encapsulated by IP layer protocol security structure IPsec,
the ngPDG sends the PDU session establishment request message to the CPNF through a Next Generation (NG 2) interface after the message is subjected to IPsec encapsulation;
the CPNF receives PDU conversation establishment request information after the IPsec encapsulation, and the CPNF selects a corresponding User Plane Network Function (UPNF) according to the PDU conversation establishment request information;
the CPNF establishes NG4 session connection with the selected UPNF, and establishes NG2 session connection with a next generation packet data gateway (ngPDG) selected by the terminal.
In the above scheme, when the network element on the network side is the CPNF, the sending, by the network element, the data network information to the terminal includes:
receiving a PDU session establishment request message sent by a terminal by the CPNF;
and the CPNF sends a PDU session establishment response message carrying the data network information to the terminal.
In the above solution, the PDU session establishment request message sent by the CPNF receiving terminal includes:
receiving a PDU session establishment request message sent by a terminal through an access network by the CPNF;
the CPNF selects at least two User Plane gateways (User Plane gateway, UPGW) and a branch Point (Branching Point, BP) according to the PDU conversation establishment request message or the pre-configured Quality of Service (QoS) requirement;
the CPNF establishes the session connection between the access network and the BP;
the CPNF sends a request message for establishing NG4 conversation to each UPGW, and receives a NG4 conversation request response message which is sent by each UPGW and carries data network information.
In the above scheme, when the network element at the network side is the UPGW, the sending, by the network element, the data network information to the terminal includes:
the UPGW sends a Router Advertisement (RA) message carrying data network information to the UE, wherein the RA message carries parameters for accessing the data network.
In the above scheme, before sending the data network information to the terminal, the method further includes:
and the UPGW receives a session request message for establishing NG4 sent by the CPNF and sends a session request response message NG4 to the CPNF.
The embodiment of the invention also provides a data network information processing method, which comprises the following steps: a terminal receives data network information sent by a network side; the data network information is used for the terminal to select the connected data network according to the data network information, and the data network information at least comprises: the priority of the data network, or whether the data network is the service information provided by the local data network or the data network.
In the above solution, the service information at least includes: one or more domain names, or network names, or names of services provided by the network.
In the above scheme, when the network element at the network side is the network discovery and selection function, the receiving, by the terminal, the data network information sent by the network element includes:
the terminal sends a session request message to the network discovery and selection function;
and receiving the network selection strategy or routing strategy information carrying the data network information sent by the network discovery and selection function.
In the above scheme, the receiving, by the terminal, the data network information sent by the network element includes:
the terminal sends a PDU session establishment request message for carrying out IPSec encapsulation protection to one or more CPNFs through ngPDG;
and receiving a PDU session establishment response message which is sent by the CPNF and carries data network information.
In the above scheme, when the network element on the network side is CPNF, the receiving, by the terminal, the data network information sent by the network element includes:
the terminal sends a PDU session establishment request message to the CPNF through the access network;
and receiving a PDU session establishment response message which is sent by the CPNF and carries data network information.
In the above scheme, when the network element at the network side is the UPGW, the receiving, by the terminal, the data network information sent by the network element includes:
and the terminal receives an RA message which is sent by the UPGW and carries data network information, wherein the RA message carries parameters used for accessing the data network.
In the above solution, before the terminal receives the data network information sent by the network side, the method further includes:
the terminal sends a PDU session establishment request message to the CPNF through the access network;
and receiving a PDU session establishment response message which is sent by the CPNF and carries data network information.
An embodiment of the present invention further provides a data network information processing apparatus, where the apparatus includes:
the sending module is used for sending the data network information to the terminal; wherein the content of the first and second substances,
the data network information is used for the terminal to select the connected data network according to the data network information, and the data network information at least comprises: the priority of the data network, or whether the data network is the service information provided by the local data network or the data network.
In the above solution, the service information at least includes: one or more domain names, or network names, or names of services provided by the network.
In the foregoing solution, when the device is a network discovery and selection function, the sending module is specifically configured to send a network selection policy or routing policy information carrying data network information to a terminal.
In the foregoing solution, when the apparatus is a CPNF, the sending module includes: a second receiving unit and a second transmitting unit; wherein the content of the first and second substances,
the second receiving unit is configured to receive a PDU session establishment request message sent by a terminal;
and the second sending unit is used for sending a PDU session establishment response message carrying data network information to the terminal.
In the above scheme, the sending module further includes a first selecting unit and a first establishing unit; accordingly, the method can be used for solving the problems that,
the second receiving unit is specifically configured to receive a PDU session establishment request message sent by the ngPDG through the NG2 interface after IPsec encapsulation is removed;
the first selection unit is used for selecting the corresponding UPNF according to the PDU session establishment request message;
the first establishing unit is used for establishing a NG4 session connection with the selected UPNF and establishing a NG2 session connection with the ngPDG selected by the terminal.
In the foregoing solution, when the apparatus is a CPNF, the sending module includes: a third receiving unit and a third transmitting unit; wherein the content of the first and second substances,
the third receiving unit is configured to receive a PDU session establishment request message sent by a terminal, and perform authentication and authorization on the terminal;
and the third sending unit is used for sending a PDU session establishment response message carrying the data network information to the terminal.
In the above scheme, the apparatus further comprises: a second selection unit and a second establishment unit; wherein the content of the first and second substances,
the second selecting unit is configured to select at least two UPGWs and a branch point BP according to the PDU session establishment request message or a preconfigured QoS requirement;
the second establishing unit is used for establishing session connection between the access network and the BP; accordingly, the method can be used for solving the problems that,
the third sending unit is further configured to send a session request message for establishing NG4 to each UPGW;
the third receiving unit is further configured to receive NG4 session request response messages carrying data network information and sent by the UPGWs.
In the foregoing solution, when the apparatus is a UPGW, the sending module is specifically configured to send, to a UE, an RA message carrying data network information, where the RA message carries a parameter for accessing the data network.
In the above scheme, the apparatus further comprises: and the session establishing module is used for receiving a session request message for establishing NG4 sent by the CPNF and sending a NG4 session request response message to the CPNF.
An embodiment of the present invention further provides a terminal, where the terminal includes: a receiving module, configured to receive data network information sent by a network side, where the data network information is used for a terminal to select a connected data network according to the data network information, and the data network information at least includes: the priority of the data network, or whether the data network is the service information provided by the local data network or the data network.
In the above solution, the service information at least includes: one or more domain names, or network names, or names of services provided by the network.
In the foregoing solution, when the network element at the network side is a network discovery and selection function, the receiving module includes: a fourth transmitting unit and a fourth receiving unit; wherein the content of the first and second substances,
the fourth sending unit is configured to send a session request message to the network discovery and selection function;
the fourth receiving unit is configured to receive the network selection policy or the routing policy information carrying the data network information and sent by the network discovery and selection function.
In the foregoing solution, the receiving module includes: a fifth transmitting unit and a fifth receiving unit; wherein the content of the first and second substances,
the fifth sending unit is configured to send a PDU session establishment request message for IPSec encapsulation protection to one or more CPNFs through ngPDG;
and the fifth receiving unit is configured to receive a PDU session establishment response message which is sent by the CPNF and carries data network information.
In the foregoing solution, when the network element on the network side is a CPNF, the receiving module includes: a sixth transmitting unit and a sixth receiving unit; wherein the content of the first and second substances,
the sixth sending unit is configured to send a PDU session establishment request message to the CPNF through the access network;
and the sixth receiving unit is configured to receive a PDU session establishment response message which is sent by the CPNF and carries data network information.
In the above scheme, when the network element at the network side is a UPGW, the receiving module is specifically configured to receive an RA message that is sent by the UPGW and carries data network information, where the RA message carries a parameter for accessing the data network.
In the above scheme, the terminal further includes a second processing module, configured to send a PDU session establishment request message to the CPNF through the access network, and receive a PDU session establishment response message carrying data network information and sent by the CPNF.
According to the data network information processing method, the device and the terminal provided by the embodiment of the invention, the network element sends the data network information to the terminal, and the terminal receives the data network information; the data network information is used for selecting a connected data network according to the terminal; therefore, the terminal can quickly select the correct data network to be connected, and the connected data network is utilized to receive or send the grouped data, so that the use experience of the user is improved.
Drawings
Fig. 1 is a schematic diagram of an architecture of a UE connected to a core network from a next generation wireless network according to the present invention;
fig. 2 is a schematic diagram of the architecture of a UT connected to a core network from a next generation wireless network and a non-3GPP access network according to the present invention;
fig. 3 is a schematic diagram of a basic processing flow of a data network information processing method according to an embodiment of the present invention;
FIG. 4 is a content diagram of data network information according to an embodiment of the present invention;
fig. 5 is a detailed processing flow diagram of a data network information processing method according to a second embodiment of the present invention;
fig. 6 is a detailed processing flow diagram of a data network information processing method according to a third embodiment of the present invention;
fig. 7 is a detailed processing flow diagram of a data network information processing method according to a fourth embodiment of the present invention;
fig. 8 is a detailed processing flow diagram of a data network information processing method according to a fifth embodiment of the present invention;
fig. 9 is a schematic diagram of a basic processing flow of a sixth data network information processing method according to an embodiment of the present invention;
fig. 10 is a detailed processing flow diagram of a seventh data network information processing method according to an embodiment of the present invention;
fig. 11 is a detailed processing flow diagram of an eighth data network information processing method according to an embodiment of the present invention;
fig. 12 is a detailed processing flow diagram of a nine data network information processing method according to an embodiment of the present invention;
fig. 13 is a detailed processing flow diagram of eleven data network information processing methods according to the embodiment of the present invention;
fig. 14 is a schematic structural diagram of a data network information processing apparatus according to an embodiment of the present invention;
FIG. 15 is a schematic diagram of a data network information processing apparatus according to a third embodiment of the present invention;
fig. 16 is a schematic structural diagram of a data network information processing apparatus according to a fourth embodiment of the present invention;
fig. 17 is a schematic structural diagram of a fifth data network information processing apparatus according to an embodiment of the present invention;
fig. 18 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 19 is a schematic structural diagram of a second terminal according to an embodiment of the present invention;
fig. 20 is a schematic structural diagram of a third terminal according to an embodiment of the present invention;
fig. 21 is a schematic structural diagram of a four-terminal according to an embodiment of the present invention;
fig. 22 is a schematic structural diagram of a five-terminal according to an embodiment of the present invention;
FIG. 23 is a flowchart illustrating a detailed processing procedure of a data information processing method according to an embodiment of the interaction method of the present invention;
FIG. 24 is a flowchart illustrating a detailed process of a second data information processing method according to an embodiment of the interaction method;
FIG. 25 is a flowchart illustrating a detailed processing procedure of a data information processing method according to an embodiment of the interaction method of the present invention;
fig. 26 is a schematic view of a detailed processing flow of a four-data information processing method according to an embodiment of the interaction method of the present invention.
Detailed Description
For further understanding of the solution described in the embodiment of the present invention, the following briefly describes a 5G network:
with the rapid development of communication technology, research on the next generation network, i.e., the 5G network, is being actively conducted, and the 5G system may enable an operator to provide a network as one service to users; that is, an operator can provide a connection service for an entity network in a form of network as a service, so that the wide requirements of terminal users on more network use cases are met; for example, for heavy machinery teleoperation, where the optimal connectivity service needs to have low latency, high bandwidth, cover a certain geographical area, support multiple known equipment types, etc., in the prior art, the building or mining entity that needs to perform and remotely control it usually establishes an own network, based on which to create a connectivity service that will be torn down when not needed; however, future 5G networks will enable operators to offer connectivity services for the needs of people alike the one described above.
The 5G network will be put into commercial use in about 2020, and the use case at that time will need a new type, expandable and programmable connection service; compared with the existing network, the 5G network needs to meet more requirements, such as: the network flow will increase 1000 times, the terminal devices to be connected will increase 100 times, the network speed for supporting part of the applications to run is 100 times of the average speed of the existing network, even zero delay is required when some applications are run, and at the same time, the whole network system will strive to make the battery life reach 10 years or more.
The 5G network is a new network which is combined with the existing wireless network, cloud network and core network evolution, can support an ultra-broadband mobile broadband network, a mass of terminals, an ultra-reliable Internet of things and more kinds of equipment, and can meet different operation and maintenance requirements and thousands of application scenes; a wireless part of the 5G Network integrates various wireless and entry schemes, a core Network is based on a cloud technology and a Software Defined Network (SDN) technology, and various different access technologies can access a unified core Network and customize the functions, resource allocation and mutual isolation among virtual networks of different scenes according to scenes by virtue of virtualization, the SDN technology and the cloud technology.
The updating of mobile Communication technology will bring many innovative applications to various industries, and mobile broadband, media, Machine-Type Communication (MTC), remote machinery and Intelligent Transportation System (ITS) will become the main use case in the 5G era; meanwhile, not all future use cases require the network to have ultra-fast speed, ultra-intelligence and the capability of supporting various types of terminal equipment; on the contrary, the 5G network is constructed in a flexible way, and an operator can freely and flexibly combine network performance indexes such as network rate, network capacity, network coverage rate and the like, so that the specific requirements of each use case are met; therefore, to meet the widely varying use case requirements described above, 5G networks will employ techniques based on logical resources rather than physical resources.
The functions of the network interfaces in fig. 1 and fig. 2 according to the embodiment of the present invention are described as follows: NG1 is a control plane interface between UE and next generation core Network, NG2 is a control plane interface between next generation Residential Access Network (RAN) or non-3GPP Access gateway Network function and next generation core Network, NG3 is a user plane interface between next generation RAN or non-3GPP Access gateway Network function and next generation core Network, NG4 is an interface between CPNF and UPNF in next generation core Network, NG5 is an interface between CPNF and application function (server) in next generation core Network, and NG6 is an interface between UPNF and packet data Network in next generation core Network.
As shown in fig. 3, a basic processing flow of a data network information processing method according to an embodiment of the present invention includes the following steps:
here, the operation executed by the network side may be implemented by a core network, where the data network information is used for the terminal to select a correct data network to be connected, and the terminal sends or receives packet data by using the selected data network; the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
Network side method embodiment two
When the network element on the network side is a network discovery and selection function, a detailed processing flow diagram of a data network information processing method according to a second embodiment of the present invention is shown in fig. 5, and includes the following steps:
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
Before performing step 202, the method further comprises:
wherein the session request message includes parameter information of network selection.
Third embodiment of the network side method
When the network element on the network side is CPNF, a detailed processing flow diagram of a data network information processing method according to the third embodiment of the present invention is shown in fig. 6, and includes the following steps:
specifically, the ngPDG receives a PDU session establishment request message which is sent by the UE and encapsulated by the IP layer protocol security structure IPsec, and sends the PDU session establishment request message to the CPNF through the NG2 interface after the IPsec encapsulation is removed; the CPNF receives PDU conversation establishment request information after the IPsec encapsulation is removed;
here, before sending a PDU session establishment request message to ngPDG, the UE needs to connect to a non-3GPP network, acquire an IP address allocated by a non-3GPP access network, select ngPDG, initiate an attach and access authentication authorization flow to the ngPDG, and complete IPSec tunnel establishment between the UE and the ngPDG to protect the sent signaling message; the CPNF receives an attach request of the UE.
specifically, each CPNF selects a corresponding UPNF according to the PDU session establishment request message.
specifically, each CPNF establishes a NG4 session connection with the UPNF selected by itself, and establishes a NG2 session connection with one ngPDG selected by the UE;
here, the NG4 session connection and the NG2 session connection are used to acquire data network information, and each CPNF acquires its own corresponding data network information.
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
Method of network side embodiment four
When the network element on the network side is CPNF, a detailed processing flow diagram of a data network information processing method according to the fourth embodiment of the present invention is shown in fig. 7, and includes the following steps:
specifically, the CPNF receives a PDU session establishment request message sent by the terminal through AN Access Network (AN), and initiates AN authentication and authorization procedure to check the UE subscription and policy related information.
specifically, the CP NF sends the information of the selected BP to the AN, and the AN initiates a session connection establishment request message to the BP; the AN sends a session connection establishment response message to the BP.
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
Network side method embodiment five
When the network element on the network side is the UPGW, a detailed processing flow diagram of a data network information processing method according to five embodiments of the present invention is shown in fig. 8, and includes the following steps:
here, the RA message carries parameters for accessing the data network, the number of the UPGWs is at least two, and the data network information at least includes: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
Before performing step 501, the method further comprises:
Sixth embodiment of the UE side method
As shown in fig. 9, a basic processing flow of a sixth data network information processing method in an embodiment of the present invention includes the following steps:
601, receiving data network information sent by a network side by UE;
here, the network side refers to a core network, and the data network information at least includes: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
specifically, when a plurality of data network information are received by the terminal, the data network to which the application on the terminal needs to be connected is selected according to the data network information, and the terminal sends or receives packet data by using the connected data network.
Seventh embodiment of the UE side method
When the network element on the network side is a network discovery and selection function, a detailed processing flow diagram of a data network information processing method according to the seventh embodiment of the present invention is shown in fig. 10, and includes the following steps:
wherein the session request message includes: parameter information of network selection.
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
Eight embodiments of the UE side method
When the network element on the network side is CPNF, the detailed processing flow diagram of the data network information processing method according to the eight embodiments of the present invention is shown in fig. 11, and includes the following steps:
specifically, the UE is connected to a non-3GPP network firstly, an IP address allocated by a non-3GPP access network is acquired, an ngPDG is selected, an attachment and access authentication authorization flow to the ngPDG is initiated, and the IPSec tunnel establishment is completed between the UE and the ngPDG so as to protect a sent signaling message;
and the PDU session establishment request message sent by the UE is protected by IPSec encapsulation, the ngPDG receives the PDU session establishment request message and then breaks the IPSec encapsulation, and the PDU session establishment request message which is broken the IPSec encapsulation is sent to the CPNF through an NG2 interface.
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
Example nine of the UE lateral method
When the network element on the network side is CPNF, a detailed processing flow diagram of the data network information processing method according to the ninth embodiment of the present invention is shown in fig. 12, and includes the following steps:
in step 901, the UE sends a PDU session setup request message to the CPNF via the AC.
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
Tenth embodiment of the UE side method
When the network element on the network side is a UPGW, a detailed processing flow diagram of the eleven data network information processing methods according to the embodiments of the present invention is shown in fig. 13, and includes the following steps:
step 1001, the UE receives a router advertisement RA message carrying data network information sent by a UPGW;
here, the RA message carries parameters for accessing the data network; the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
Before performing step 1001, the method further comprises:
Apparatus embodiment one
In order to implement the foregoing data network information processing method, a first embodiment of the apparatus of the present invention further provides a data network information processing apparatus, where as shown in fig. 14, the apparatus includes: a sending module 10, configured to send data network information to a terminal, where the data network information is used for the terminal to select a connected data network;
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
Device embodiment II
When the device is a network discovery and selection function, the device of the second embodiment of the present invention includes a sending module 10, where the sending module 10 is specifically configured to send a network selection policy or routing policy information carrying data network information to a terminal;
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
In a preferred embodiment, the session request message includes: parameter information of network selection.
Device embodiment III
When the device is a network discovery and selection function, a third embodiment of the device according to the present invention is a structure of the device, as shown in fig. 15, the device includes a sending module 10, and the sending module 10 includes: a second receiving unit 201, a first selecting unit 202, a first establishing unit 203 and a second sending unit 204; wherein the content of the first and second substances,
the second receiving unit 201 is configured to receive a PDU session establishment request message sent by a terminal;
the first selecting unit 202 is configured to select a corresponding UPNF according to the PDU session establishment request message;
the first establishing unit 203 is configured to establish a NG4 session connection with the selected UPNF, establish a NG2 session connection with the ngPDG selected by the UE, and use the NG4 session connection and the NG2 session connection to obtain data network information;
the second sending unit 204 is configured to send a PDU session establishment response message carrying data network information to the terminal;
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
In a preferred embodiment, the second receiving unit 201 is specifically configured to receive a PDU session establishment request message sent by the ngPDG through the NG2 interface after the IPsec encapsulation is removed.
Example four of the device
When the device is a network discovery and selection function, a fourth embodiment of the device of the present invention is a constituent structure of the device, as shown in fig. 16, where the sending module 10 includes: a third receiving unit 301, a second selecting unit 302, a second establishing unit 303 and a third sending unit 304; wherein the content of the first and second substances,
the third receiving unit 301 is configured to receive a PDU session establishment request message sent by a terminal, and perform authentication and authorization on the terminal;
the second selecting unit 302 is configured to select at least two user plane gateways UPGW and a branch point BP according to the PDU session establishment request message or a preconfigured QoS requirement;
the second establishing unit 303 is configured to establish a session connection between the access network and the BP;
the third sending unit 304 is configured to send a PDU session establishment response message carrying the data network information to the terminal;
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
In a preferred embodiment, the third receiving unit 301 is specifically configured to receive a PDU session establishment request message sent by the UE via the AC.
Example V of the device
When the device is a network discovery and selection function, a fifth embodiment of the device according to the present invention is a structure of the device, as shown in fig. 17, where the sending module 10 is specifically configured to send a router advertisement RA message carrying data network information to a UE;
here, the RA message carries parameters for accessing the data network, and the data network information at least includes: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
In a preferred embodiment, the apparatus further comprises: and the session establishing module 20 is configured to receive a session request message for establishing NG4 sent by the CPNF, and send a NG4 session request response message to the CPNF.
Terminal embodiment one
In order to implement the above data network information processing method, a structure of the terminal according to the first embodiment of the present invention, as shown in fig. 18, includes a receiving module 40; wherein the content of the first and second substances,
the receiving module 40 is configured to receive data network information sent by a network element, and is configured to select a connected data network according to the data network information by a terminal;
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
Terminal embodiment two
In order to implement the above data network information processing method, when the network element is a network discovery and selection function, the terminal according to the second embodiment of the present invention includes a receiving module 40, as shown in fig. 19; wherein the receiving module 40 includes: a fourth transmitting unit 401 and a fourth receiving unit 402; wherein the content of the first and second substances,
the fourth sending unit 401 is configured to send a session request message to the network discovery and selection function;
the fourth receiving unit 402 is configured to receive the network selection policy or the routing policy information carrying the data network information and sent by the network discovery and selection function;
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
In a preferred embodiment, the session request message includes: parameter information of network selection.
Terminal embodiment three
In order to implement the above data network information processing method, when the network element is CPNF, the structure of the terminal according to the third embodiment of the present invention, as shown in fig. 20, includes a receiving module 40; wherein the receiving module 40 includes: a fifth transmitting unit 501 and a fifth receiving unit 502; wherein the content of the first and second substances,
the fifth sending unit 501, configured to send a PDU session establishment request message for IPSec encapsulation protection to one or more CPNFs through ngPDG;
the fifth receiving unit 502 is configured to receive a PDU session establishment response message which is sent by the CPNF and carries data network information;
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
Terminal embodiment four
In order to implement the above data network information processing method, when the network element is CPNF, the terminal according to the fourth embodiment of the present invention includes a receiving module 40 as shown in fig. 21; wherein the receiving module 40 includes: a sixth transmitting unit 601 and a sixth receiving unit 602; wherein the content of the first and second substances,
the sixth sending unit 601 is configured to send a PDU session establishment request message to the CPNF through the access network;
the sixth receiving unit 602 is configured to receive a PDU session establishment response message that is sent by the CPNF and carries data network information;
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
Terminal embodiment five
In order to implement the above data network information processing method, when the network element is CPNF, the structure of the terminal according to the fifth embodiment of the present invention is shown in fig. 22, and includes a receiving module 40; wherein the content of the first and second substances,
the receiving module 40 is specifically configured to receive an RA message carrying data network information and sent by a UPGW;
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
In a specific embodiment, the RA message carries parameters for accessing the data network.
In a specific embodiment, the terminal further includes a second processing module 60, configured to send a PDU session establishment request message to the CPNF through the access network, and receive a PDU session establishment response message carrying data network information and sent by the CPNF.
Embodiment of the Interactive method
As shown in fig. 23, a detailed processing flow of a data network information processing method according to an embodiment of the interaction method of the present invention includes the following steps:
step 1101, the UE sends a session request message to a network discovery and selection function;
here, the session request message includes parameter information related to network selection by the UE.
Step 1102, the network discovery and selection function sends network selection policy or routing policy information to the UE;
wherein the network selection policy or routing policy information comprises data network information;
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
Embodiment two of the Interactive method
In the embodiment of the interaction method of the present invention, the second UE simultaneously establishes two PDU sessions from the ngRAN and the non-3GPP access network, and respectively connects to two different data networks, namely, the first data network and the second data network, and a detailed processing flow of the data network information processing method, as shown in fig. 24, includes the following steps:
step 1201, the UE connects to the non-3GPP network, acquires the IP address allocated by the non-3GPP access network, selects the ngPDG, initiates the attachment and access authentication authorization flow to the ngPDG, and completes the IPSec tunnel establishment between the UE and the ngPDG to protect the signaling message to be sent; the CPNF receives an attach request of the UE.
Step 1202, UE sends PDU session establishment request message to CPNF-1;
here, the PDU session request message is protected by IPSec encapsulation, ngPDG receives the message and then performs IPSec encapsulation, and sends the PDN session establishment request message to CPNF-1 through NG2 interface.
Step 1203, CPNF-1 selects a suitable UPNF-1 according to the received PDN session establishment request message.
In step 1204, CPNF-1 establishes NG4 session connection with UPNF-1.
And 1205-1206, the CPNF-1 and the ngPDG establish NG2 session connection.
Step 1207, the CPNF-1 sends a PDU session establishment response message to the UE;
here, the session establishment response message includes first data network information including at least: the priority of the first data network, or whether the first data network is the service information provided by the local network or the first data network;
wherein the priority of the first data network comprises: high, medium and low;
the service information provided by the first data network comprises: one or more domain names, such as: com, or network name, or service name provided by the network;
the first data network information content, as shown in fig. 4, may be defined as a separate IE information element, may be contained in a specific IE container, and may be contained in DNS information.
Step 1208, the UE sends a PDU session establishment request message to the CPNF-2;
here, the PDU session request message is protected by IPSec encapsulation, ngPDG receives the message and then performs IPSec encapsulation, and sends the PDN session establishment request message to CPNF-2 through NG2 interface.
Step 1209, the CPNF-2 selects a suitable UPNF-2 according to the received PDN session establishment request message.
At step 1210, CPNF-2 establishes a NG4 session connection with UPNF-2.
Step 1211, the UE initiates a PDU session establishment connection to the network side through the ngRAN to connect to the second data network, and the CPNF-2 carries the second data network information in the session establishment response message;
wherein the priority of the second data network comprises: high, medium and low;
the service information provided by the second data network comprises: one or more domain names, such as: com, or network name, or service name provided by the network;
the second data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
Third embodiment of the Interactive method
In the embodiment of the interaction method of the present invention, the third UE is connected to the ngRAN to establish a PDU session, the PDU session is connected to the local data network and the core data network, respectively, and a detailed processing flow of the data network information processing method, as shown in fig. 25, includes the following steps:
In step 1302, the CPNF initiates an authentication and authorization procedure to check the subscription of the UE and policy related information.
At step 1304, the CPNF establishes a session connection between the AC and the BP.
In step 1305, CPNF-1 initiates a setup NG4 session request message to UPGW-1.
specifically, the NG4 session request response message includes corresponding data network information;
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
In step 1307, CPNF-2 initiates a setup NG4 session request message to UPGW-2.
specifically, the NG4 session request response message includes corresponding data network information;
here, the data network information includes at least: the priority of the data network, or whether the data network is the service information provided by the local network or the data network;
wherein the priority of the data network comprises: high, medium and low;
the service information provided by the data network includes: one or more domain names, such as: com, or network name, or service name provided by the network;
the data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
Interaction method embodiment four
In the embodiment of the present invention, the network side sends data network information to the UE through the RA message, and the detailed processing flow of the data network information processing method, as shown in fig. 26, includes the following steps:
In step 1402, the CPNF initiates an authentication and authorization procedure to check the subscription of the UE and policy related information.
Step 1403, the CPNF selects at least two UPGWs for the UE according to the session request message or QoS requirement of the UE, and selects one BP for the UE, so that the user forwards the downlink packet of different UPGW anchor points to the UE, and accurately distributes the uplink packet of the UE to different UPGW anchor points.
At step 1404, the CPNF establishes a session connection between the AC and the BP.
In step 1406, the UPGW-1 sends a setup NG4 session request response message to the CPNF.
In step 1407, CPNF-2 initiates a setup NG4 session request message to UPGW-2.
In step 1408, the UPGW-1 transmits a setup NG4 session request response message to the CPNF.
In step 1409, the CPNF sends a session response message to the UE.
specifically, the RA message includes parameters such as Ipv6 prefix for accessing the first data network, and also includes first data network information;
here, the first data network information includes at least: the priority of the first data network, or whether the first data network is the service information provided by the local network or the first data network;
wherein the priority of the first data network comprises: high, medium and low;
the service information provided by the first data network comprises: one or more domain names, such as: com, or network name, or service name provided by the network;
the first data network information content, as shown in fig. 4, may be defined as a separate IE information element, may be contained in a specific IE container, and may be contained in DNS information.
here, the second data network information includes at least: the priority of the second data network, or whether the second data network is the service information provided by the local network or the second data network;
wherein the priority of the second data network comprises: high, medium and low;
the service information provided by the second data network comprises: one or more domain names, such as: com, or network name, or service name provided by the network;
the second data network information content, as shown in fig. 4, may be defined as an independent IE information element, may be contained in a specific IE container, and may also be contained in DNS information.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that, in practical applications, the function of the sending module may be implemented by a Central Processing Unit (CPU), a microprocessor unit (MPU), a Digital Signal Processor (DSP), a programmable gate array (FPGA), an antenna, or a transceiver located on a network element; the functions of the receiving module and the second processing module can be realized by a CPU, an MPU, a DSP, or an FPGA, or an antenna, or a transceiver located on the UE.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (16)
1. A method for processing data network information, the method comprising:
the network side sends the data network information to the terminal; the data network information is used for the terminal to select the connected data network according to the data network information, and the data network information at least comprises: whether the data network is the service information provided by the local data network or the data network; the service information at least comprises: one or more domain names, or network provided service names;
when the network element at the network side is a network discovery and selection function, the sending of the data network information to the terminal includes:
the network discovery and selection function sends network selection policy or routing policy information carrying data network information to the terminal.
2. The method of claim 1, wherein when a network element at a network side is a control plane network function CPNF, the network side sends data network information to a terminal, and the method includes:
one or more CPNF receives the protocol data unit PDU conversation that the terminal station sends and establishes the solicited message;
and the CPNF sends a PDU session establishment response message carrying the data network information to the terminal.
3. The method of claim 2, wherein the receiving, by the CPNF, the PDU session setup request message sent by the terminal comprises:
ngPDG receives PDU session establishment request message sent by terminal and encapsulated by IP layer protocol security structure IPsec,
the ngPDG sends the PDU session establishment request message to the CPNF through an NG2 interface after the message is subjected to IPsec encapsulation;
the CPNF receives PDU conversation establishment request information after the IPsec encapsulation is removed, and the CPNF selects a corresponding user plane network function UPNF according to the PDU conversation establishment request information;
and the CPNF establishes a next generation NG4 session connection with the selected UPNF and establishes a NG2 session connection with the next generation packet data gateway ngPDG selected by the terminal.
4. The method of claim 1, wherein when the network element on the network side is CPNF, the sending, by the network element, the data network information to the terminal comprises:
receiving a PDU session establishment request message sent by a terminal by the CPNF;
and the CPNF sends a PDU session establishment response message carrying the data network information to the terminal.
5. The method of claim 4, wherein the receiving of the PDU session establishment request message from the terminal by the CPNF comprises:
receiving a PDU session establishment request message sent by a terminal through an access network by the CPNF;
CPNF chooses at least two user plane gateways UPGW and a branch point BP according to the PDU conversation establishment request message or the service quality QoS requirement configured in advance;
the CPNF establishes the session connection between the access network and the BP;
the CPNF sends a request message for establishing NG4 conversation to each UPGW, and receives a NG4 conversation request response message which is sent by each UPGW and carries data network information.
6. The method of claim 1, wherein when the network element on the network side is a UPGW, the sending, by the network element, the data network information to the terminal comprises:
the UPGW sends a router advertisement RA message carrying data network information to the UE, wherein the RA message carries parameters for accessing the data network.
7. The method of claim 6, wherein before sending the data network information to the terminal, the method further comprises:
and the UPGW receives a session request message for establishing NG4 sent by the CPNF and sends a session request response message NG4 to the CPNF.
8. The method of claim 1, wherein the data network information further comprises a priority of the data network.
9. A data network information processing apparatus, characterized in that the apparatus comprises:
the sending module is used for sending the data network information to the terminal; wherein the content of the first and second substances,
the data network information is used for the terminal to select the connected data network according to the data network information, and the data network information at least comprises: whether the data network is the service information provided by the local data network or the data network; the service information at least comprises: one or more domain names, or network provided service names;
when the device is a network discovery and selection function, the sending module is specifically configured to send a network selection policy or routing policy information carrying data network information to the terminal.
10. The apparatus of claim 9, wherein when the apparatus is a control plane network function CPNF, the sending module comprises: a second receiving unit and a second transmitting unit; wherein the content of the first and second substances,
the second receiving unit is used for receiving a protocol data unit PDU session establishment request message sent by the terminal;
and the second sending unit is used for sending a PDU session establishment response message carrying data network information to the terminal.
11. The apparatus of claim 10, wherein the sending module further comprises a first selecting unit and a first establishing unit; accordingly, the method can be used for solving the problems that,
the second receiving unit is specifically configured to receive a PDU session establishment request message, which is sent by the next generation packet data gateway ngPDG through an NG2 interface after IPsec encapsulation is removed;
the first selection unit is used for selecting a corresponding user plane network function UPNF according to the PDU session establishment request message;
the first establishing unit is used for establishing a NG4 session connection with the selected UPNF and establishing a NG2 session connection with the ngPDG selected by the terminal.
12. The apparatus of claim 9, wherein when the apparatus is a CPNF, the sending module comprises: a third receiving unit and a third transmitting unit; wherein the content of the first and second substances,
the third receiving unit is configured to receive a PDU session establishment request message sent by a terminal, and perform authentication and authorization on the terminal;
and the third sending unit is used for sending a PDU session establishment response message carrying the data network information to the terminal.
13. The apparatus of claim 12, further comprising: a second selection unit and a second establishment unit; wherein the content of the first and second substances,
the second selecting unit is used for selecting at least two user plane gateways UPGW and a branch point BP according to the PDU session establishment request message or the pre-configured QoS requirement;
the second establishing unit is used for establishing session connection between the access network and the BP; accordingly, the method can be used for solving the problems that,
the third sending unit is further configured to send a session request message for establishing NG4 to each UPGW;
the third receiving unit is further configured to receive NG4 session request response messages carrying data network information and sent by the UPGWs.
14. The apparatus according to claim 9, wherein, when the apparatus is a UPGW, the sending module is specifically configured to send, to a UE, a router advertisement, RA, message carrying data network information, where the RA message carries parameters for accessing the data network.
15. The apparatus of claim 14, further comprising: and the session establishing module is used for receiving a session request message for establishing NG4 sent by the CPNF and sending a NG4 session request response message to the CPNF.
16. The apparatus of claim 9, wherein the data network information further comprises a priority of a data network.
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| WO2015074712A1 (en) * | 2013-11-22 | 2015-05-28 | Telefonaktiebolaget L M Ericsson (Publ) | Network node and methods for selecting access node for communications in wireless communication networks |
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| WO2018108133A1 (en) | 2018-06-21 |
| CN108616962A (en) | 2018-10-02 |
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