CN103220650B - A kind of method and apparatus of WiFi terminal access different business territory - Google Patents

Abstract

The present invention provides a method and device for a WiFi terminal to access different service domains. The method is applied to a CPE, including: if the uplink data service initiated by the WiFi terminal is a data service type that is authenticated and/or billed at the IP layer, Encapsulate the uplink data service through the CAPWAP tunnel; transparently transmit the uplink data service message encapsulated through the CAPWAP tunnel through the EPC and send it to the BRAS, and the BRAS sends the uplink data service message to the corresponding service domain; if the WiFi terminal initiates If the uplink data service is a data service type that is authenticated and/or billed at the application layer, the second IP address of the WiFi terminal carried in the message carrying the uplink data service is converted into the first IP address of the CPE device; The uplink data service message with the first IP address of the CPE device is directly routed and forwarded to the corresponding service domain through the EPC.

Description

A method and device for a WiFi terminal to access different service domains

technical field

The present invention relates to the field of communication technologies, in particular to a method and a device for a WiFi terminal to access different service flows.

Background technique

With the rapid development of LTE (Long Term Evolution, Long Term Evolution) and HSPA (High Speed Packet Access, High Speed Packet Access) technologies, there is a demand in the industry to use HSPA+LTE technology to achieve broadband wireless access. Through (Long Term Evolution Advanced, the follow-up evolution of LTE technology) CPE (CustomerPremiseEquipment, user equipment) performs wireless broadband access. At the same time, WiFi has become the standard configuration of consumer electronics products such as smartphones, notebooks, and tablets. Compared with LTE terminals, WiFi terminals are cheaper and more popular. Therefore, in the field of wireless broadband technology, it becomes a trend to adopt the technical solution of LTE+WiFi.

In order to enable WiFi terminals to access the network through LTECPE, it needs to support multiple data services, such as Internet, IPTV (Internet Personality Television, Interactive Network Television), IMS (Internet Protocol Multimedia Subsystem Network Multimedia Subsystem) and operators' own services. For services such as the Internet that require authentication and/or accounting at the IP (Internet Protocol, Internet Protocol) layer, since LTE/EPC can only perceive LTECPE, it cannot perceive WiFi terminals under LTECPE, so the LTE/EPC of the prior art The EPC cannot perform authentication and/or accounting for the WiFi terminal when the WiFi terminal accesses a service domain where the IP layer performs authentication and/or accounting.

In order to be able to perform authentication and/or accounting on WiFi terminals when they access the business domain of IP layer for authentication and/or accounting, the prior art proposes a new network architecture, the uplink data service of WiFi terminals After the flow is encapsulated through the CAPWAP tunnel and passed through the EPC, it is connected to the networking mode of the BRAS (Broadband Remote Access Server, Broadband Remote Access Server), and then connected to the corresponding service domain through the BRAS. However, with this networking method, the uplink data service flow is encapsulated through the CAPWAP (ControlAndProvisioningofWirelessAccessPointsProtocolSpecification, control and configuration of wireless access point) tunnel, so that other services except the Internet and other services that perform authentication and/or accounting at the IP layer It brings a lot of header overhead, which seriously affects the efficiency of EPS (Evolved Packet System, Evolved Packet System); and the five-tuple of CAPWAP tunnel is the same, and the different uplink data service flows of WiFi terminals will be mapped to the same EPS The bearer makes it impossible to implement priority scheduling of different service flows initiated by WiFi terminals.

Contents of the invention

Embodiments of the present invention provide a method and device for a WiFi terminal to access different service domains, which are used to solve the problem of low EPS efficiency and the inability to implement priority scheduling of different service flows initiated by the WiFi terminal in the prior art.

In order to solve the above technical problems, embodiments of the present invention adopt the following technical solutions:

A method for a WiFi terminal to access different service domains, which is applied to a user end equipment (CPE), where the CPE communicates with the WiFi terminal through WiFi, and the CPE communicates with a base station through Long Term Evolution (LTE). The base station is connected to multiple service domains respectively corresponding to various services through the evolved packet core network EPC, and the above system architecture enables the WiFi terminal to communicate with the service domain through the CPE, the base station, and the EPC communicating, wherein the method comprises:

The CPE communicates with the broadband remote access server BRAS through the EPC according to the first IP address allocated by the EPC and establishes a CAPWAP tunnel, and authenticates and/or authenticates the WiFi terminal encapsulated through the CAPWAP tunnel with the IP layer The charging service domain communicates with the BRAS, and through the interaction between the WiFi terminal and the authentication and/or charging service domain at the IP layer, the BRAS allocates a first Two IP addresses;

Determine the data service type of the uplink data service initiated by the WiFi terminal;

If the uplink data service initiated by the WiFi terminal is a data service type that is authenticated and/or billed at the IP layer, encapsulate the uplink data service through the CAPWAP tunnel; encapsulate the uplink data service through the CAPWAP tunnel After the message is transparently transmitted through the EPC, it is sent to the BRAS, and the BRAS sends the message of the uplink data service to the corresponding service domain;

If the uplink data service initiated by the WiFi terminal is a data service type for authentication and/or accounting at the application layer, converting the second IP address of the WiFi terminal carried in the message carrying the uplink data service to The first IP address of the CPE device; forwarding the packet of the uplink data service carrying the first IP address of the CPE device to the corresponding service domain through the EPC direct routing.

A device for accessing different service domains by a WiFi terminal, wherein the CPE communicates with the WiFi terminal via WiFi, the CPE communicates with a base station via Long Term Evolution (LTE), and the base station communicates via The evolved packet core network EPC is connected to multiple service domains respectively corresponding to various services. Through the above system architecture, the WiFi terminal communicates with the service domains through the CPE, the base station, and the EPC. The above CPE includes:

The tunnel establishment unit is used to communicate with the broadband remote access server BRAS through the EPC according to the first IP address allocated by the EPC, establish a CAPWAP tunnel, and authenticate the WiFi terminal encapsulated through the CAPWAP tunnel with the IP layer and/or the service domain for charging is sent to the BRAS, and through the interaction between the WiFi terminal and the service domain for authentication and/or charging at the IP layer, the BRAS is the WiFi terminal assign a second IP address;

A determining unit, configured to determine the data service type of the uplink data service initiated by the WiFi terminal;

An IP layer service processing unit, configured to pass the uplink data service through the CAPWAP tunnel if the determination unit determines that the uplink data service initiated by the WiFi terminal is a data service type that is authenticated and/or charged at the IP layer for encapsulation;

An application layer service processing unit, configured to carry the packet carrying the uplink data service if the determination unit determines that the uplink data service initiated by the WiFi terminal is a data service type that is authenticated and/or billed at the application layer The second IP address of the WiFi terminal is converted to the first IP address of the CPE device;

A sending unit, configured to transparently transmit the packet of the uplink data service encapsulated through the CAPWAP tunnel through the EPC and send it to the BRAS, and the BRAS sends the packet of the uplink data service to a corresponding service domain; or

and forwarding the packet of the uplink data service carrying the first IP address of the CPE device to a corresponding service domain through the EPC direct routing.

In the method and device for accessing different service domains by WiFi terminals provided by the embodiments of the present invention, the user equipment performs intelligent routing according to different data services initiated by the WiFi terminal, such as authentication and/or billing services at the IP layer, through the The CAPWAP tunnel encapsulates the message carrying the uplink data service and sends it to the BRAS after being transparently transmitted through the EPC, and the BRAS sends the message of the uplink data service to the corresponding service domain; and/or billing services, then convert the second IP address of the WiFi terminal carried in the packet carrying the uplink data service to the first IP address of the CPE device, and through the EPC Direct routing and forwarding to the corresponding service domain, so that the WiFi terminal accesses the service domain that is authenticated and/or billed at the application layer without passing through the BRAS, and the packets between the WiFi terminal and the service domain do not need CAPWAP tunnel encapsulation, and will not Increase the header overhead of the message, thereby improving the transmission efficiency of EPS; at the same time, through intelligent routing of different types of business domains, such as five different types of business domains that perform authentication and/or accounting at the IP layer or application layer The tuples are different, so that the CPE can map different data services of the WiFi terminal to different EPS bearers, and realize priority scheduling between different service flows.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a flowchart of a method for a WiFi terminal to access different service domains according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a network system in which a WiFi terminal accesses different service domains through EPS;

Fig. 3 is a schematic flow diagram of a WiFi terminal requesting a BRAS to allocate a second IP address;

FIG. 4 is a flow chart of another method for a WiFi terminal to access a different service domain provided by an embodiment of the present invention;

FIG. 5 is a structural block diagram of an apparatus for a WiFi terminal to access different services provided by an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one

The embodiment of the present invention provides a method and device for a WiFi terminal to access different service domains. The method is applied to the user equipment CPE, as shown in Figures 1, 2, and 3, and Figure 2 is the network system based on this embodiment , wherein the WiFi terminal attaches to the WLAN through the AP and communicates with the CPE through WiFi, the CPE communicates with the base station through LTE, and the base station is connected to multiple service domains corresponding to various services through the EPC, In this way, through the above system architecture, the WiFi terminal communicates with the service domain through the CPE, the base station, and the service domain. The figure shows two setting methods of AP (AccessPoint, WiFi wireless access point) and CPE of user end equipment. CPE can integrate AP functional modules, such as CPE/AP in Figure 1, and AP and CPE can also be two Separate devices. The device provided in this embodiment is a CPE integrated with an AP function.

In order for the application system to charge independently after the WiFi terminal accesses the Internet, the WiFi terminal accessing the Internet through the EPS network system needs to go through the BRAS. In this way, the BRAS reports the Internet data service records accessed by the WiFi terminal to the authentication and accounting server for authentication and accounting. The CPE communicates with the BRAS by using the AC (AccessController, WiFi access controller) to adopt the first IP address distributed by the EPC for the CPE, and the CPE and the AC communicate with the BRAS through a CAPWAP tunnel, and then The AC is connected to the BRAS, of course, the AC and the BRAS may also be a physical device integrated together. The first IP address is the IP address assigned by the EPC to the CPE after the CPE is powered on, the EPC authenticates the CPE according to the 3GPP standard procedure, and establishes a PDN connection with the EPC.

The BRAS assigns a second IP address to the WiFi terminal through the system architecture in FIG. 1 above, as shown in FIG. 3 . For ease of description, the BRAS is divided into AC and BRAS into two functional modules in this process for illustration. The process of assigning a second IP address to a WiFi terminal is as follows:

First, the WiFi terminal sends a DHCPDiscovery (DynamicHostConfigurationProtocol, dynamic host configuration protocol discovery) broadcast message to the CPE; after receiving the DHCPDiscovery broadcast message, the CPE encapsulates the message through a CAPWAP tunnel and sends it to the CPE. The CPE forwards the CAPWAP-encapsulated packet to the AC, and the CPE uses the first IP address allocated by the EPC for the CPE in the packet. The AC decapsulates the received packet through the CAPWAP tunnel, and then forwards it to the BRAS. After receiving the DHCPDiscovery broadcast message sent by the WiFi terminal, the BRAS returns a DHCPOFFER to the AC. The AC performs CAPWAP tunnel encapsulation on the DHCPOFFER message accordingly, and sends it to the CPE, and the CPE decapsulates the DHCPOFFER message encapsulated by the CAPWAP tunnel, and then sends it to the WiFi terminal. After receiving the DHCPOFFER message sent by the BRAS, the WiFi terminal sends a DHCPRequest broadcast message to the BRAS. The specific process is the same as that of sending a DHCPDiscovery message to the BRAS, so that the BRAS allocates a second IP address to the WiFi terminal.

Among them, the data services supported by WiFi terminals include: services for billing at the IP layer and services for authentication at the application layer, such as HSI (HighSpeedInternet) services that are billed at the IP layer, games operated by operators, IMS services, and IPTV Services are billed at the application layer. The method includes:

S101. Receive an uplink data service message sent by the WiFi terminal, where the uplink data service message carries a second IP address assigned to the WiFi terminal by a broadband remote access server BRAS.

S102. Determine the data service type of the uplink data service initiated by the WiFi terminal.

After receiving the uplink data service message sent by the WiFi terminal, the CPE may determine the data service type of the uplink data service initiated by the WiFi terminal according to the quintuple information of the uplink data service message. The quintuple information of the uplink data service message may be pre-configured by the CPE, or dynamically derived and acquired through a UL-TFT (UplinkTrafficFloWTemplate, uplink traffic flow template) of the CPE.

After determining the uplink data service message initiated by the WiFi terminal, if the uplink data service initiated by the WiFi terminal is a data service type that is authenticated and/or billed at the IP layer, step S103 is performed; if the uplink data service initiated by the WiFi terminal is If the uplink data service is a data service type for authentication and/or charging at the application layer, step S104 is executed.

S103. Encapsulate the uplink data service through the CAPWAP tunnel; transparently transmit the uplink data service packet encapsulated through the CAPWAP tunnel through the EPC and send it to the BRAS, and the BRAS sends the uplink data service packet The text is sent to the corresponding business domain.

If the uplink data service initiated by the WiFi terminal is authenticated and/or billed at the IP layer, after the CPE encapsulates the uplink data service sent by the WiFi terminal through the CAPWAP tunnel, the CPE transparently transmits the packet carrying the uplink data service After passing through the EPC, it is sent to the AC (meaning that the EPC does not process the message, and the EPC is "transparent" relative to the message), and the AC accesses the BRAS to send the message of the uplink data service to the corresponding service. In this way, the application system can independently authenticate and/or charge the WiFi terminal.

S104. Translate the second IP address of the WiFi terminal carried in the packet carrying the uplink data service into the first IP address of the CPE device; convert the second IP address carrying the CPE device The packet of the uplink data service of an IP address is directly routed and forwarded to the corresponding service domain through the EPC.

If the uplink data service initiated by the WiFi terminal is authenticated and/or billed at the application layer, the CPE converts the second IP address of the WiFi terminal carried in the packet carrying the uplink data service into the EPC as The first IP address assigned by the CPE module, and then the CPE module forwards the bearer uplink data service to the corresponding service through the EPC route.

In the method for a WiFi terminal to access different service domains provided by an embodiment of the present invention, the CPE performs intelligent routing according to different data services initiated by the WiFi terminal, such as services that are authenticated and/or billed at the IP layer through the CAPWAP tunnel. The message carrying the uplink data service is encapsulated and sent to the BRAS after being transparently transmitted through the EPC, and the BRAS sends the message of the uplink data service to the corresponding service domain; service, the second IP address of the WiFi terminal carried in the message carrying the uplink data service is converted into the first IP address of the CPE device, and is directly routed and forwarded to the Corresponding service domains, so that WiFi terminals access the service domains that perform authentication and/or accounting at the application layer without going through the BRAS, so that packets between WiFi terminals and service domains do not need CAPWAP tunnel encapsulation, and will not increase the number of packets Head overhead, so as to improve the transmission efficiency of EPS; at the same time, CPE can intelligently route different types of business domains, such as different quintuples for different types of business domains that perform authentication and/or accounting at the IP layer or application layer , so that the CPE can map different data services of the WiFi terminal to different EPS bearers, and realize priority scheduling between different service flows.

Embodiment two

The embodiment of the present invention provides a method and device for a WiFi terminal to access different service domains. The method is applied to the LTE user end equipment CPE, as shown in Figures 2, 3, and 4, and Figure 2 is the network based on this embodiment system, wherein the WiFi terminal attaches to the WLAN through an AP and communicates with the CPE through WiFi, the CPE communicates with the base station through LTE, and the base station is connected to multiple service domains corresponding to various services through EPC In this way, through the above system architecture, the WiFi terminal communicates with the service domain through the CPE, the base station, and the service domain. The figure shows two setting methods of AP (AccessPoint, WiFi wireless access point) and CPE of user end equipment. CPE can integrate AP functional modules, such as the CPE in Figure 2, and the AP and CPE can also be two separate equipment. The device provided in this embodiment is a CPE integrated with an AP function.

In order for the application system to charge independently after the WiFi terminal accesses the Internet, the WiFi terminal accessing the Internet through the EPS network system needs to go through the BRAS. In this way, the BRAS reports the Internet data service records accessed by the WiFi terminal to the authentication and accounting server for authentication and accounting. The CPE communicates with the BRAS through the AC (AccessController, WiFi access controller) using the first IP address allocated by the EPC for the CPE, and the CPE and the AC communicate through the CAPWAP tunnel, and then the AC accesses the The BRAS, of course, this embodiment is based on the fact that the AC and the BRAS are integrated together as a physical device of the BRAS. The first IP address is the IP address assigned by the EPC to the CPE/AP after the CPE/AP is powered on, and the CPE/AP completes the EPC's authentication of the CPE/AP and the establishment of the PDN according to the 3GPP standard process.

The BRAS assigns a second IP address to the WiFi terminal through the system architecture in FIG. 2 above, as shown in FIG. 3 . For ease of description, the BRAS is divided into AC and BRAS into two functional modules for illustration. The process of assigning a second IP address to a WiFi terminal is as follows:

First, the WiFi terminal sends a DHCPDiscovery (DynamicHostConfigurationProtocol, dynamic host configuration protocol discovery) broadcast message to the CPE; after receiving the DHCPDiscovery broadcast message, the CPE encapsulates the message through a CAPWAP tunnel and sends it to the CPE. The CPE forwards the CAPWAP-encapsulated packet to the AC, and the CPE uses the first IP address allocated by the EPC for the CPE in the packet. The AC decapsulates the received packet through the CAPWAP tunnel, and then forwards it to the BRAS. After receiving the DHCPDiscovery broadcast message sent by the WiFi terminal, the BRAS returns a DHCPOFFER to the AC. The AC performs CAPWAP tunnel encapsulation on the DHCPOFFER message accordingly, and sends it to the CPE, and the CPE decapsulates the DHCPOFFER message encapsulated by the CAPWAP tunnel, and then sends it to the WiFi terminal. After receiving the DHCPOFFER message sent by the BRAS, the WiFi terminal sends a DHCPRequest broadcast message to the BRAS. The specific process is the same as that of sending a DHCPDiscovery message to the BRAS, so that the BRAS allocates a second IP address to the WiFi terminal.

Among them, the data services supported by WiFi terminals include: services for billing at the IP layer and services for authentication at the application layer, such as HSI (HighSpeedInternet) services that are billed at the IP layer, games operated by operators, IMS services, and IPTV Services are billed at the application layer. The method includes:

S201. The CPE pre-configures an access control list for uplink data services, or dynamically derives an access control list for uplink data services.

The access control list of the uplink data service specifically includes quintuple information of the uplink data service, and the quintuple information includes the source address of the terminal that initiates the uplink data service, the destination address of the service domain to be accessed, and the source address of the uplink data service. Port, destination port and protocol number to access the business domain.

The access control list of the uplink data service can be set through pre-planning and configured in the CPE in various ways, including: CPE near-end configuration interface, CPE remote configuration interface TR069/OMA-DM, DHCPOption, ProtocolConfigurationOption (PCO) Extended or CAPWAP remote management protocol. The access control list of the uplink data service can also be dynamically derived by the UL-TFT of the CPE. The specific derivation method is to use wildcards (*) to replace the source IP address and source port, and keep the destination IP address, protocol number and destination port unchanged. . Of course, the quintuple information in the access control list of the pre-configured uplink data service can also use wildcards (*) to replace the source address and source port, and only pre-configure the destination address, protocol number and destination port.

Furthermore, the access control list of the uplink data service in the CPE can also be used to classify different uplink data services and identify priority information.

S202. The CPE receives an uplink data service message sent by the WiFi terminal, where the uplink data service message carries a second IP address assigned to the WiFi terminal by the broadband remote access server BRAS.

S203. The CPE determines the type of the uplink data service initiated by the WiFi terminal according to the destination address in the 5-tuple information of the uplink data service.

After determining the type of the uplink data service initiated by the WiFi terminal, if the uplink data service initiated by the WiFi terminal is a data service type for authentication and/or billing at the IP layer, step S204 is performed; if the WiFi terminal initiates If the uplink data service is a data service type that is authenticated and/or charged at the application layer, step S205 is performed.

The destination address information in the access control list of the uplink data service can determine the type of data service in the service domain to be accessed by the WiFi terminal. The data services that the WiFi terminal can support include: IMS, IPTV, HSI, operators' self-operated services, etc., but not limited thereto. Usually the operator plans the destination address segments of different service domains, so that according to the destination address of the data service initiated by the WiFi terminal and the destination address segment of each data service in the access control list of the uplink data service, the service to be accessed by the WiFi terminal can be determined domain type. For example, the destination address of the IMS service domain is 192.168.0.0-192.168.255.255, if the destination address of the data service to be accessed by the WiFi terminal is 192.168.50.23, it can be determined that the data service to be accessed by the WiFi terminal is IMS business domain. For a service flow that does not match in the access control list, it defaults to the HSI service. The data services that WiFi terminals can support include HSI, IMS, IPTV, and operator-operated services.

Further, after determining the type of the uplink data service initiated by the WiFi terminal, the CPE may also determine the priority information of the uplink data service initiated by the WiFi terminal according to the preconfigured priority information of the uplink data service.

S204. The CPE encapsulates the uplink data service through the CAPWAP tunnel.

The CPE parses out the destination address of the service domain to be accessed in the uplink data service message initiated by the WiFi terminal. If the destination address of the data service to be accessed by the WiFi terminal is 1.10.2.3, then the access control list of the CPE corresponding to the uplink data service determines that the data service to be accessed by the WiFi terminal is an HSI service. In this way, the CPE encapsulates the uplink data service through the CAPWAP tunnel.

S205. The CPE converts the second IP address of the WiFi terminal carried in the packet carrying the uplink data service to the first IP address of the CPE device.

If the destination address of the data service to be accessed by the WiFi terminal is 192.168.50.23, then the CPE determines that the data service to be accessed by the WiFi terminal is an IMS service. Since the IMS service is charged at the application layer, the CPE converts the second IP address of the WiFi terminal carried in the uplink data service message into the first IP address of the CPE itself.

If multiple PDN connections are established between the CPE and the EPC, the CPE converts the second IP address of the WiFi terminal carried in the uplink data service message into the corresponding IP address of the PDN connection.

S206. The CPE performs priority scheduling on the uplink data service initiated by the WiFi terminal according to the uplink data service initiated by the WiFi terminal or the type of the uplink data service and the priority information of the uplink data service.

Further, in order to better handle multiple uplink data services, the CPE also includes priority information of the uplink data services in the access control list, so that the CPE corresponds to different priority information for different data service types according to different data service types. The uplink data service provides different priority scheduling, specifically, a WFQ (Weighted Fair Queuing, weighted fair queuing) congestion management algorithm may be used.

S207. The CPE maps the uplink data service initiated by the WiFi terminal to a corresponding bearer according to the QoS mechanism of the EPS.

After the CPE maps the uplink data service initiated by the WiFi terminal to the corresponding bearer according to the QoS mechanism of the EPS, if the uplink data service initiated by the WiFi terminal is a data service type that is authenticated and/or charged at the IP layer, Then execute step S208; if the uplink data service initiated by the WiFi terminal is a data service type for authentication and/or charging at the application layer, execute step S209.

For example, after the CPE is powered on, the EPC completes the authentication of the CPE according to the 3GPP standard procedure, and establishes a PDN connection. The PDN connection corresponds to a default EPS bearer and a dedicated EPS bearer with a permanent online requirement.

At the same time, the CPE establishes a CAPWAP control channel and a data channel with the AC according to the CAPWAP standard, which are respectively carried on the EPS dedicated bearer corresponding to the CPE. For example, the CAPWAP control channel can be carried on the EPS dedicated bearer and the default bearer.

In this way, if the uplink data service initiated by the WiFi terminal is authenticated and/or charged at the IP layer, the CPE performs CAPWAP encapsulation on the uplink data service message. Then the CPE maps the uplink data service message to the corresponding EPS dedicated bearer according to the EPS QoS mechanism.

If the uplink data service initiated by the WiFi terminal is authenticated and/or billed at the application layer, since the uplink data service initiated by the WiFi terminal does not access the corresponding service domain through the BRAS, the CPE maps to the corresponding service domain according to the QoS mechanism of the EPS. bearer. For IMS services, the CPE maps the IMS signaling stream to a Non-GBR bearer with QCI=5, the IMS media voice stream maps to a dedicated GBR bearer with QCI=1, and the IMS media video stream can be mapped to a dedicated GBR bearer with QCI=2 load on. In this way, different uplink data services are mapped to different bearers, so that the EPS can provide different QoS for different uplink data services.

Of course, the above bearer mapping is only for the case where one PDN is established between the CPE and the EPC. If multiple PDNs are established between the CPE and the EPC, the EPC allocates multiple IP addresses to the CPE for each PDN. For example, if three PDN connections are established between the CPE and the EPC, the EPC will allocate three IP addresses to the CPE. In this way, after the CPE receives the uplink data service message initiated by the WiFi terminal, according to the type of the uplink data service, if the type of the uplink data service is an IMS service that is billed at the application layer, the CPE selects the first IMS service for the IMS service. PDN connection. Correspondingly, the CPE converts the second IP address of the WiFi terminal carried in the uplink data service message into the IP address of the first PDN of the CPE. Then perform corresponding bearer mapping on the first PDN connection for the uplink data service according to the EPS QoS mechanism.

S208. The CPE transparently transmits the packet of the uplink data service encapsulated through the CAPWAP tunnel through the EPC and then sends it to the BRAS, and the BRAS sends the packet of the uplink data service to a corresponding service domain.

After performing bearer mapping on the uplink data service initiated by the WiFi terminal, the CPE sends the uplink data service packet encapsulated through the CAPWAP tunnel to the AC through the EPC. The AC decapsulates the uplink data service message through the CAPWAP tunnel, and then sends it to the BRAS to access the Internet service. At the same time, the BRAS charges for the service flow accessed by the WiFi terminal.

S209. The CPE directly routes and forwards the packet of the uplink data service carrying the first IP address of the CPE device to a corresponding service domain through the EPC.

After performing bearer mapping on the uplink data service initiated by the WiFi terminal, the CPE sends the data service initiated by the WiFi terminal to the EPC, and finally accesses the IMS domain.

Since the data service charged by the CPE at the application layer does not need to be connected to the corresponding service domain through the BRAS, CAPWAP tunnel encapsulation is not required for the data service initiated by the WiFi terminal. Such as IMS, VoIP and other services will greatly reduce the overhead of the data service message and improve the transmission efficiency of EPS; and because the CPE/AP converts the second IP address of the WiFi terminal to the first IP address of the CPE, The EPC can perceive the data service initiated by the WiFi terminal, so that the WiFi terminal can use the EPS bearer mapping mechanism in the EPS, so as to realize priority scheduling of different services.

Further, if the AP and the CPE are two separate devices, the AP and the CPE jointly complete the access of the uplink data service initiated by the WiFi terminal to different service domains. For example, an Ethernet interface can be used to connect an AP to a CPE, and the CPE will assign a private network IP address to the AP through a DHCP message. In this form, the access control list of the uplink data service can be configured in the AP through a remote management protocol such as CAPWAP or a local management interface of the AP. After receiving the uplink data service message sent by the WiFi terminal, the AP can determine the service type of the uplink data service initiated by the WiFi terminal according to the access control list of the uplink data service.

If the uplink data service initiated by the WiFi terminal is a data service that is billed at the application layer, the AP sends the uplink data service message carrying the second IP address of the WiFi terminal and the service type of the uplink data service initiated by the WiFi terminal through the Ethernet interface. The packet is encapsulated into a message and sent to the CPE. The source IP address of the message is the private network IP address allocated by the CPE to the AP. After receiving the message, the CPE first converts the second IP address of the WiFi terminal carried in the uplink data service message into the first IP address of the CPE, and at the same time converts the private network IP address of the AP in the message into the CPE The first IP address is sent to the corresponding service domain through the EPC.

If the uplink data service initiated by the WiFi terminal is a data service that is billed at the IP layer, the uplink data service message that carries the second IP address of the WiFi terminal initiated by the WiFi terminal and the uplink data service initiated by the WiFi terminal The type is encapsulated into a CAPWAP packet through the CAPWAP tunnel and sent to the CPE. The outer source IP address of the CAPWAP packet is the private network address assigned by the CPE to the AP. After receiving the CAPWAP message, the CPE converts the CAPWAP outer source IP address into the first IP address of the CPE, and then transparently transmits the message through the EPC and then sends it to the AC. The AC decapsulates the CAPWAP message, and then forwards it to the BRAS.

Since the CPE converts the second IP address of the WiFi terminal carried in the uplink data service message initiated by the WiFi terminal and charged at the application layer to the first IP address of the CPE, the CPE then converts the first IP address of the CPE in the uplink data service message Address, the data service initiated by the WiFi terminal can be mapped to the corresponding EPS bearer; and for the data service charged at the IP layer, because the data service message initiated by the WiFi terminal encapsulated by CAPWAP carries the second IP address of the WiFi terminal , so that the CPE maps the data service initiated by the WiFi terminal to another bearer. Therefore, priority scheduling between upstream and downstream flows of different services can be realized at the EPS bearer level, and different QoS (Quality of System, quality of service) levels between different upstream data service flows can be guaranteed.

Further, in the prior art, in order to solve the problem of separate authentication and/or charging of WiFi terminals, the WiFi terminal must pass through the BRAS when it must access services that are charged at the application layer, so that it cannot support dynamic PCC (Policy Control and Charging, Policy control and billing) policy and static QoS policy deployment issues. However, in this embodiment, for the WiFi terminal to access services that are charged at the application layer, such as IMS services, the CPE converts the second IP address in the uplink data service message initiated by the WiFi terminal to the first IP address of the CPE, so that the EPC side Can perceive. When the IMS triggers the establishment of a dedicated EPS bearer to the P-GW (PacketDataNetworkGateway, packet data network gateway) through the PCRF (PolicyandChargingRulesFunction, policy and charging rule function), the P-GW can associate with the EPS bearer of the CPE, thereby supporting dynamic PCC Policy and static QoS policy deployment.

Further, in this implementation, the BRAS is used to assign IP addresses to the WiFi terminals, and the WiFi terminals are connected to the service domain of authentication and/or accounting at the IP layer through the BRAS, so that the application system can separately charge the WiFi terminals; at the same time, the WiFi terminals Through the EPC access to the service domain of the application layer billing, the service domain charges the WiFi terminal at the application layer, thus realizing the separate billing of the different services accessed by the WiFi terminal by the application system, thereby avoiding the need for the WiFi terminal When accessing all different service domains through the BRAS, after the BRAS charges all the services, it must also deduct the charges for the services that are also charged at the application layer. This further reduces the difficulty of implementing and deploying BRAS and AAA (Authentication, Authorization, Accounting, identity verification, authorization, and statistics) servers.

Further, the CPE equipment provided by the embodiment of the present invention can not only include an LTE interface unit to communicate with the base station through the long-term evolution LTE method, but also include an LTE-A (LTE-Advanced, subsequent evolution of LTE technology) interface unit to communicate with the base station through the long-term evolution Evolved LTE-A mode for communication.

The embodiment of the present invention provides a method for a WiFi terminal to access different service domains. The user terminal device performs intelligent routing according to different data services initiated by the WiFi terminal, such as authentication and/or billing services at the IP layer, through the The CAPWAP tunnel encapsulates the message carrying the uplink data service and transmits it transparently through the EPC and then sends it to the BRAS, and the BRAS sends the message of the uplink data service to the corresponding service domain; For/or billing services, convert the second IP address of the WiFi terminal carried in the packet carrying the uplink data service to the first IP address of the CPE device, and directly use the EPC to The route is forwarded to the corresponding business domain. In this way, the WiFi terminal does not need to pass through the BRAS when accessing the service domain that performs authentication and/or accounting at the application layer. In this way, the packets between the WiFi terminal and the service domain do not need CAPWAP tunnel encapsulation, and the overhead of the packet header will not be increased. Improve the transmission efficiency of EPS; at the same time, through intelligent routing for different types of business domains, such as different five-tuples for different types of business domains that perform authentication and/or accounting at the IP layer or application layer, the CPE can transmit WiFi Different data services of the terminal are mapped to different EPS bearers, realizing priority scheduling between different service flows; further, it can reduce the difficulty of implementing and deploying BRAS and AAA, and at the same time, it can support dynamic uplink data services initiated by WiFi terminals PCC policy and static QoS policy deployment.

Embodiment three

The embodiment of the present invention provides a device 40 for WiFi terminals to access different service domains, as shown in Figures 2, 3 and 5, Figure 2 is the network system based on this embodiment, in which the WiFi terminals are attached to The WLAN communicates with the CPE through WiFi, the CPE communicates with the base station through LTE, and the base station is connected to multiple service domains corresponding to various services through the EPC. In this way, through the above-mentioned system architecture, all The WiFi terminal communicates with the service domain through the CPE, the base station, and the service domain. The figure shows two setting methods of AP (AccessPoint, WiFi wireless access point) and CPE of user end equipment. CPE can integrate AP functional modules, such as the CPE in Figure 2, and the AP and CPE can also be two separate equipment. The device 40 provided in this embodiment is a CPE integrated with an AP function.

In order for the application system to charge independently after the WiFi terminal accesses the Internet, the WiFi terminal accessing the Internet through the EPS network system needs to go through the BRAS. In this way, the BRAS reports the Internet data service records accessed by the WiFi terminal to the authentication and accounting server for authentication and accounting. The CPE communicates with the BRAS by using the AC (AccessController, WiFi access controller) to adopt the first IP address distributed by the EPC for the CPE, and the CPE and the AC communicate with the BRAS through a CAPWAP tunnel, and then The AC is connected to the BRAS, of course, the AC and the BRAS may also be a physical device integrated together. The first IP address is the IP address assigned by the EPC to the CPE after the CPE is powered on, the CPE completes the EPC's authentication of the CPE and the establishment of the PDN according to the 3GPP standard process.

The BRAS assigns a second IP address to the WiFi terminal through the system architecture in Figure 2 above, as shown in Figure 3. For the sake of illustration, the AC and the BRAS are used as two independent devices in this process. In the implementation process, the AC and the BRAS It can be a physical device, which realizes the functions of independent AC and BRAS devices at the same time. The process of assigning a second IP address to a WiFi terminal is as follows:

First, the WiFi terminal sends a DHCPDiscovery (DynamicHostConfigurationProtocol, dynamic host configuration protocol discovery) broadcast message to the CPE; after receiving the DHCPDiscovery broadcast message, the CPE encapsulates the message through a CAPWAP tunnel and sends it to the CPE. The CPE forwards the CAPWAP-encapsulated packet to the AC, and the CPE uses the first IP address allocated by the EPC for the CPE in the packet. The AC decapsulates the received packet through the CAPWAP tunnel, and then forwards it to the BRAS. After receiving the DHCPDiscovery broadcast message sent by the WiFi terminal, the BRAS returns a DHCPOFFER to the AC. The AC performs CAPWAP tunnel encapsulation on the DHCPOFFER message accordingly, and sends it to the CPE, and the CPE decapsulates the DHCPOFFER message encapsulated by the CAPWAP tunnel, and then sends it to the WiFi terminal. After receiving the DHCPOFFER message sent by the BRAS, the WiFi terminal sends a DHCPRequest broadcast message to the BRAS. The specific process is the same as that of sending a DHCPDiscovery message to the BRAS, so that the BRAS allocates a second IP address to the WiFi terminal.

Among them, the data services supported by WiFi terminals include: services for billing at the IP layer and services for authentication at the application layer, such as HSI (HighSpeedInternet) services that are billed at the IP layer, games operated by operators, IMS services, and IPTV Services are billed at the application layer. In this embodiment, the apparatus is described by taking the integration of the AP and the CPE into the same device CPE/AP as an example. The CPE includes: an acquisition unit 41 , a tunnel establishment unit 42 , a determination unit 43 , an IP layer service processing unit 44 , an application layer service processing unit 45 , a priority processing unit 46 , a bearer mapping unit 47 and a sending unit 48 .

The acquiring unit 41 is configured to preconfigure an access control list for uplink data services; or for dynamically deriving an access control list for uplink data services; the access control list for uplink data services includes five-tuple information for uplink data services, The five-tuple information includes the source address, destination address, source port, destination port and protocol number of the uplink data service.

The access control list of the uplink data service obtained by the obtaining unit 41 includes five-tuple information of the uplink data service, and the five-tuple information includes the source address of the terminal that initiates the uplink data service, the destination address of the service domain to be accessed, the originating The source port of the uplink data service, the destination port and protocol number of the service domain to be accessed.

The access control list of the uplink data service can be set through pre-planning and configured in the CPE through various schemes, including: CPE near-end configuration interface, CPE remote configuration interface TR069/OMA-DM, DHCPOption, ProtocolConfigurationOption (PCO) Extension, CAPWAP remote management protocol.

The access control list of the uplink data service can also be dynamically derived by the UL-TFT of the CPE. The specific derivation method is to use wildcards (*) to replace the source IP address and source port, and keep the destination IP address, protocol number and destination port unchanged. . Of course, the quintuple information in the access control list of the uplink data service preconfigured by the access control list acquisition unit 41 can also use wildcards (*) to replace the source address and source port, and only configure the destination address, protocol number and destination port.

Further, when the acquiring unit 41 preconfigures the quintuple information in the access control list of the uplink data service, it may also configure priority information of different services.

The tunnel establishment unit 42 is configured to communicate with the broadband remote access server BRAS through the EPC according to the first IP address allocated by the EPC, establish a CAPWAP tunnel, and connect the WiFi terminal encapsulated through the CAPWAP tunnel to the IP address The message for communicating with the service domain that performs authentication and/or accounting at the IP layer is sent to the BRAS, and through the interaction between the WiFi terminal and the service domain that performs authentication and/or accounting at the IP layer, the BRAS is The WiFi terminal is assigned a second IP address.

The BRAS in this implementation refers to the BRAS including the AC device function. In this way, a CAPWAP tunnel is established between the CPE and the BRAS to perform CAPWAP tunnel encapsulation on services initiated by WiFi terminals for authentication and/or accounting at the IP layer.

The determining unit 43 is configured to determine the type of the uplink data service initiated by the WiFi terminal according to the destination address in the 5-tuple information of the uplink data service.

The destination address information in the access control list of the uplink data service can be used to determine the type of data service in the service domain to be accessed by the WiFi terminal. The data services that the WiFi terminal can support include: IMS, IPTV, HSI, operators' self-operated services, etc., but not limited thereto. Usually the operator plans the destination address segments of different service domains, so according to the destination address of the data service initiated by the WiFi terminal, and the destination address segment of each data service in the access control list of the uplink data service, the determination unit 43 can determine that the WiFi terminal needs to The type of business domain being accessed. For example, the destination address of the IMS service domain is 192.168.0.0-192.168.255.255, if the destination address of the data service to be accessed by the WiFi terminal is 192.168.50.23, then the determination unit 43 can determine the data to be accessed by the WiFi terminal. The service is an IMS service domain. For service flows that do not match in the uplink control list, the default is HSI service. The data services that WiFi terminals can support include HSI, IMS, IPTV, and operator-operated services.

Further, after determining the type of the uplink data service initiated by the WiFi terminal, the determining unit 43 may also determine the priority information of the uplink data service initiated by the WiFi terminal according to the preconfigured priority information of the uplink data service.

The IP layer service processing unit 44 is configured to, if the determining unit determines that the uplink data service initiated by the WiFi terminal is a data service type for authentication and/or charging at the IP layer, pass the uplink data service through the The above CAPWAP tunnel is encapsulated.

For example, the determining unit 43 parses out the destination address of the service domain to be accessed in the uplink data service message initiated by the WiFi terminal. If the destination address of the data service to be accessed by the WiFi terminal is 1.10.2.3, then the determination unit 43 determines that the data service to be accessed by the WiFi terminal is an HSI service corresponding to the access control list of the uplink data service. In this way, the IP layer service processing unit 44 encapsulates the uplink data service through the CAPWAP tunnel.

The application layer service processing unit 45 is further configured to: if the uplink data service initiated by the WiFi terminal is a data service type that is authenticated and/or billed at the application layer, the packet carrying the uplink data service carries the The second IP address of the WiFi terminal is converted into the first IP address of the CPE device.

If the destination address of the data service to be accessed by the WiFi terminal is 192.168.50.23, then the determining unit 43 determines that the data service to be accessed by the WiFi terminal is an IMS service. Since the IMS service is charged at the application layer, the application layer processing unit 45 converts the second IP address of the WiFi terminal carried in the uplink data service message into the first IP address of the CPE itself.

The priority processing unit 46 is configured to perform priority scheduling on the uplink data service initiated by the WiFi terminal according to the type of the uplink data service initiated by the WiFi terminal and the priority information of the uplink data service.

Further, in order to better handle multiple uplink data services, the uplink data service access control list acquired by the acquisition unit 41 also includes the priority information of the uplink data services, so that the CPE corresponds to different priority levels according to different data service types The information priority processing unit 46 provides different priority scheduling for different uplink data services, specifically, a WFQ (Weighted Fair Queuing, weighted fair queuing) congestion management algorithm may be used.

The bearer mapping unit 47 is configured to map the uplink data service initiated by the WiFi terminal to a corresponding bearer according to the EPS QoS mechanism.

For example, after the CPE/AP is powered on, the EPC completes the authentication of the CPE/AP according to the 3GPP standard procedure, and establishes a PDN connection. The PDN connection corresponds to a default EPS bearer and a dedicated EPS bearer with a permanent online requirement.

At the same time, the tunnel establishment unit 42 establishes a CAPWAP control channel and a data channel with the AC according to the CAPWAP standard. The CAPWAP control channel and the data channel are respectively carried on the EPS dedicated bearer corresponding to the CPE/AP. For example, the CAPWAP control channel can be carried on the EPS dedicated bearer and the default load on.

In this way, if the uplink data service initiated by the WiFi terminal is authenticated and/or billed at the IP layer, the IP layer service processing unit 44 performs CAPWAP encapsulation on the uplink data service message. Then the bearer mapping unit 47 maps the uplink data service packets to corresponding EPS dedicated bearers according to the EPS QoS mechanism.

If the uplink data service initiated by the WiFi terminal is authenticated and/or billed at the application layer, since the uplink data service initiated by the WiFi terminal does not access the corresponding service domain through the BRAS, the bearer mapping unit 47 will The above-mentioned uplink data services are mapped to corresponding bearers. For example, the IMS service, the bearer mapping unit 47 maps the IMS signaling stream to a Non-GBR bearer with QCI=5, the IMS media voice stream is mapped to a dedicated GBR bearer with QCI=1, and the IMS media video stream can be mapped to a QCI=2 on the dedicated GBR bearer. In this way, different uplink data services are mapped to different bearers, so that the EPS can provide different QoS for different uplink data services.

Of course, the above bearer mapping is only for the establishment of one PDN between the CPE and the EPC. If multiple PDNs are established between the CPE and the EPC, for each PDN, the EPC allocates an IP address for each PDN connection for the CPE. address. For example, if three PDN connections are established between the CPE and the EPC, the EPC will allocate three IP addresses to the CPE. In this way, after the CPE receives the uplink data service message initiated by the WiFi terminal, according to the type of the uplink data service, if the type of the uplink data service is an IMS service that is billed at the application layer, the CPE selects the first IMS service for the IMS service. PDN connection. Correspondingly, the CPE converts the second IP address of the WiFi terminal carried in the uplink data service message into the IP address of the first PDN of the CPE.

The sending unit 48 is configured to transparently transmit the message of the uplink data service encapsulated through the CAPWAP tunnel through the EPC and then send it to the BRAS, and the BRAS sends the message of the uplink data service to the corresponding service domain; or The packet of the uplink data service carrying the first IP address of the CPE device is directly routed and forwarded to a corresponding service domain through the EPC.

Since the CPE does not access the data service charged at the application layer to the corresponding service domain through the BRAS, the data service initiated by the WiFi terminal does not need to be encapsulated in a CAPWAP tunnel. IMS, VoIP and other services will greatly reduce the overhead of the data service message and improve the transmission efficiency of EPS; and because the CPE/AP converts the second IP address of the WiFi terminal to the first IP address of the CPE, making The EPC can perceive the data service initiated by the WiFi terminal, so that the WiFi terminal can use the bearer mapping mechanism of the EPS, so as to realize the priority scheduling of different services.

Further, if the AP and the CPE are two separate devices, the two independent devices of the AP and the CPE can implement the above functions of the CPE integrated with the AP function. Specifically, an Ethernet interface can be used to connect the AP and the CPE, and the CPE will assign a private network IP address to the AP through a DHCP message. In this form, the access control list of the uplink data service can be remotely configured in the AP through a remote management protocol such as CAPWAP or a local management interface of the AP. After receiving the uplink data service message sent by the WiFi terminal, the AP can determine the service type of the uplink data service initiated by the WiFi terminal according to the access control list of the uplink data service.

If the uplink data service initiated by the WiFi terminal is a data service that is billed at the application layer, the AP sends the uplink data service message carrying the second IP address of the WiFi terminal and the service type of the uplink data service initiated by the WiFi terminal through the Ethernet interface. The packet is encapsulated into a message and sent to the CPE. The source IP address of the message is the private network IP address allocated by the CPE to the AP.

If the uplink data service initiated by the WiFi terminal is a data service that is billed at the IP layer, the uplink data service message initiated by the WiFi terminal and carrying the second IP address of the WiFi terminal and the data of the uplink data service initiated by the WiFi terminal The service type is encapsulated into a CAPWAP packet through the CAPWAP tunnel and sent to the CPE. The outer source IP address of the CAPWAP packet is the private network address assigned by the CPE to the AP. After the CPE receives the CAPWAP message, the IP layer service processing unit 44 converts the outer source IP address of the CAPWAP into the first IP address of the CPE, and then transparently transmits the message through the EPC and sends it to the AC. The AC decapsulates the CAPWAP message, and then forwards it to the BRAS.

Since the application layer processing unit 45 of the CPE converts the second IP address of the WiFi terminal carried in the uplink data service message initiated by the WiFi terminal into the first IP address of the CPE, according to the uplink data service message in the uplink data service message The first IP address of the CPE can map the data service initiated by the WiFi terminal to the corresponding EPS bearer; and for the data service charged at the IP layer, since the data service message initiated by the WiFi terminal encapsulated in CAPWAP carries the WiFi The second IP address of the terminal, so that the IP layer service processing unit 44 maps the data service initiated by the WiFi terminal to another bearer. Therefore, priority scheduling between upstream and downstream flows of different services can be realized at the EPS bearer level, and different QoS (Quality of System, quality of service) levels between different upstream data service flows can be guaranteed.

Further, in the prior art, in order to solve the problem of separate authentication and/or charging of WiFi terminals, the WiFi terminal must pass through the BRAS when it must access services that are charged at the application layer, so that it cannot support dynamic PCC (Policy Control and Charging, Policy control and billing) policy and static QoS policy deployment issues. However, in this embodiment, for WiFi terminal access to services that are charged at the application layer, such as IMS services, the processing unit 44 converts the source address in the uplink data service message initiated by the WiFi terminal into the first IP address of the CPE, so that the EPC side Can perceive. When the IMS triggers the establishment of a dedicated EPS bearer to the P-GW (PacketDataNetworkGateway, packet data network gateway) through the PCRF (PolicyandChargingRulesFunction, policy and charging rule function), the P-GW can associate with the EPS bearer of the CPE, thereby supporting dynamic PCC Policy and static QoS policy deployment.

Further, in this implementation, the second IP address is assigned to the WiFi terminal through the BRAS, and the WiFi terminal accesses the service domain charged at the IP layer through the BRAS, so that the application system can separately charge the WiFi terminal; at the same time, the WiFi terminal passes the EPC Access to the service domain of application layer billing, and the service domain performs application layer billing on the WiFi terminal, so that the application system can pre-charge different services accessed by the WiFi terminal separately, thereby preventing the WiFi terminal from passing through the BRAS When accessing to all different service domains, after the BRAS charges all the services, it must also deduct the service charges that are also charged at the application layer. Furthermore, it also reduces the difficulty of implementing and deploying BRAS and AAA (Authentication, Authorization, Accounting, identity verification, authorization and statistics) servers.

Further, the CPE equipment provided by the embodiment of the present invention can not only include an LTE interface unit to communicate with the base station through the long-term evolution LTE method, but also include an LTE-A (LTE-Advanced, subsequent evolution of LTE technology) interface unit to communicate with the base station through the long-term evolution Evolved LTE-A mode for communication.

The embodiment of the present invention provides a device for a WiFi terminal to access different service domains. The determination unit determines the type of uplink data service initiated by the WiFi terminal, and the IP layer service processing unit or application layer service processing unit determines the different types of uplink data services initiated by the WiFi terminal. Intelligent routing of data services, such as authentication and/or accounting services at the IP layer, the IP layer service processing unit encapsulates the message carrying the uplink data service through the CAPWAP tunnel and transparently transmits it through the After the EPC, the BRAS is sent, and the BRAS sends the message of the uplink data service to the corresponding service domain; for the service of authentication and/or charging at the application layer, the application layer service processing unit will carry the message of the uplink data service The second IP address of the WiFi terminal carried in the document is converted into the first IP address of the CPE device, and is directly routed and forwarded to the corresponding service domain through the EPC. In this way, the WiFi terminal does not need to pass through the BRAS when accessing the service domain that performs authentication and/or accounting at the application layer. In this way, the packets between the WiFi terminal and the service domain do not need CAPWAP tunnel encapsulation, and the header overhead of the message will not be increased. Improve the transmission efficiency of EPS; at the same time, through intelligent routing for different types of service domains, the quintuples of different service domains are different, so that the CPE can map different data services of WiFi terminals to different EPS bearers, and realize the connection between different service flows. Priority scheduling among them.

Furthermore, it can reduce the difficulty of implementing and deploying BRAS and AAA, and at the same time, it can enable the uplink data service initiated by the WiFi terminal to support dynamic PCC policy and static QoS policy deployment.

Furthermore, the CPE can also implement scheduling with different priorities for multiple different service domains initiated by the WiFi terminal through its own priority configuration for different service domains.

Those of ordinary skill in the art can understand that all or part of the steps for realizing the above-mentioned method embodiments can be completed by hardware related to program instructions (such as various processing chips, CPU, DSP, FPGA, etc.), and the aforementioned programs can be stored in a computer. Reading the storage medium, when the program is executed, executes the steps of the above-mentioned method embodiments, and the aforementioned storage medium includes ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

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

Claims (11)

1. one kind is linked into the method in different business territory for WiFi terminal, it is characterized in that, be applied to ustomer premises access equipment CPE, described CPE is communicated by WiFi mode with described WiFi terminal, described CPE is communicated by Long Term Evolution LTE mode with base station, described base station is connected by multiple business domains that Evolved Packet Core EPC is corresponding respectively with multiple business, by above-mentioned WiFi mode, LTE mode, make described WiFi terminal by described CPE, described base station, described EPC communicates with described business domains, and wherein, described method comprises:

Undertaken communicating and setting up CAPWAP tunnel by described EPC and Broadband Remote Access Server BRAS in the IP address that described CPE distributes according to described EPC, the message that the WiFi terminal encapsulated by CAPWAP tunnel and the business domains of carrying out certification and/or charging at IP layer carry out communicating is sent to BRAS, and is that described WiFi terminal distributes a 2nd IP address by described WiFi terminal and the described BRAS that makes alternately carrying out the business domains of certification and/or charging at IP layer;

Determine the data traffic types of the upstream data service that described WiFi terminal is initiated;

If the upstream data service that described WiFi terminal is initiated is the data traffic types carrying out certification and/or charging at IP layer, described upstream data service is encapsulated by described CAPWAP tunnel; Be sent to BRAS after the message transmission of the upstream data service encapsulated by CAPWAP tunnel is crossed described EPC, the message of described upstream data service is sent to corresponding business domains by described BRAS;

If the upstream data service that WiFi terminal is initiated is the data traffic types carrying out certification and/or charging in application layer, then the described 2nd IP address transition of the described WiFi terminal of being carried by the message of the described upstream data service of carrying is a described IP address of described cpe device; The message of the described upstream data service carrying an IP address of described cpe device is transmitted to corresponding business domains by described EPC direct routing.

2. method according to claim 1, is characterized in that, described determine the data traffic types of the upstream data service that described WiFi terminal is initiated before, also comprise: the Access Control List (ACL) of pre-configured upstream data service; Or dynamically derive from the Access Control List (ACL) of upstream data service;

The Access Control List (ACL) of described upstream data service comprises the five-tuple information of upstream data service, and described five-tuple information comprises the source address of described upstream data service, destination address, source port, destination interface and protocol number;

Describedly determine that the data traffic types of the upstream data service that described WiFi terminal is initiated is specially the type determining the upstream data service that described WiFi terminal is initiated according to the described destination address in the five-tuple information of described upstream data service.

3. method according to claim 2, is characterized in that, before being sent to BRAS, also comprises after the message transmission of the upstream data service encapsulated by CAPWAP tunnel is crossed described EPC:

The upstream data service of described WiFi terminal being initiated is mapped to corresponding carrying according to the QoS mechanism of EPS.

4. method according to claim 2, is characterized in that, before the described message carrying the described upstream data service of an IP address of described cpe device is transmitted to corresponding business domains by described EPC direct routing, also comprises:

The upstream data service of described WiFi terminal being initiated is mapped to corresponding carrying according to the QoS mechanism of EPS.

5. the method according to claim 3 or 4, is characterized in that, described upstream data service of described WiFi terminal being initiated is mapped to corresponding carrying according to the QoS mechanism of EPS and is specially:

If the upstream data service that WiFi terminal is initiated is assigned in many PDN set up between CPE and EPC in a certain PDN connection, the upstream data service of described WiFi terminal being initiated is mapped in corresponding carrying according to the QoS mechanism of EPS in the PDN connection be assigned with.

6. method according to claim 2, is characterized in that, the Access Control List (ACL) of described pre-configured upstream data service also comprises: the precedence information of upstream data service;

The precedence information of the upstream data service of initiating according to described WiFi terminal or the type of upstream data service and described upstream data service, carries out priority scheduling to the upstream data service that described WiFi terminal is initiated.

7. a ustomer premises access equipment CPE, it is characterized in that, described CPE is communicated by WiFi mode with WiFi terminal, described CPE is communicated by Long Term Evolution LTE mode with base station, and described base station is connected by multiple business domains that Evolved Packet Core EPC is corresponding respectively with multiple business, the WiFi mode passed through, LTE mode, make described WiFi terminal by described CPE, described base station, described EPC communicates with described business domains, and described CPE comprises:

Unit is set up in tunnel, an IP address for distributing according to described EPC is communicated with Broadband Remote Access Server BRAS by described EPC, set up CAPWAP tunnel, the message that the WiFi terminal encapsulated by CAPWAP tunnel and the business domains of carrying out certification and/or charging at IP layer carry out communicating is sent to BRAS, and is that described WiFi terminal distributes a 2nd IP address by described WiFi terminal and the described BRAS that makes alternately carrying out the business domains of certification and/or charging at IP layer;

Determining unit, for determining the data traffic types of the upstream data service that described WiFi terminal is initiated;

IP layer service processing unit, if determine that the upstream data service that described WiFi terminal is initiated is the data traffic types carrying out certification and/or charging at IP layer for described determining unit, is encapsulated described upstream data service by described CAPWAP tunnel;

Application layer Service Processing Unit, if the upstream data service of initiating for described determining unit determination WiFi terminal is the data traffic types carrying out certification and/or charging in application layer, then the described 2nd IP address transition of the described WiFi terminal of being carried by the message of the described upstream data service of carrying is a described IP address of described cpe device;

Transmitting element, after the message transmission of the described upstream data service encapsulated by CAPWAP tunnel is crossed described EPC, be sent to BRAS, the message of described upstream data service is sent to corresponding business domains by described BRAS; Or

Message for the described upstream data service of the IP address by carrying described cpe device is transmitted to corresponding business domains by described EPC direct routing.

8. CPE according to claim 7, is characterized in that, also comprises: acquiring unit, for the Access Control List (ACL) of pre-configured upstream data service; Or

For dynamically deriving from the Access Control List (ACL) of upstream data service;

The Access Control List (ACL) of described upstream data service comprises the five-tuple information of upstream data service, and described five-tuple information comprises the source address of described upstream data service, destination address, source port, destination interface and protocol number;

Described determining unit is specifically for determining the type of the upstream data service that described WiFi terminal is initiated according to the described destination address in the five-tuple information of described upstream data service.

9. CPE according to claim 8, is characterized in that, also comprises: carrying map unit, is mapped to corresponding carrying for the upstream data service of described WiFi terminal being initiated according to the QoS mechanism of EPS.

10. CPE according to claim 9, it is characterized in that, described carrying map unit specifically for: if the upstream data service that WiFi terminal is initiated is assigned in many PDN set up between CPE and EPC in a certain PDN connections, the upstream data service of described WiFi terminal being initiated is mapped to according to the QoS mechanism of EPS and carries accordingly in PDN connections be assigned with.

11. CPE according to claim 8, is characterized in that, the Access Control List (ACL) of the upstream data service that described acquiring unit is pre-configured also comprises: the precedence information of upstream data service;

Described CPE also comprises: processed unit, for the upstream data service of initiating according to described WiFi terminal or the type of upstream data service and the precedence information of described upstream data service, priority scheduling is carried out to the upstream data service that described WiFi terminal is initiated.