CN102026163A - Method and device for selecting access to Internet through wireless fidelity access network - Google Patents
Method and device for selecting access to Internet through wireless fidelity access network Download PDFInfo
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- CN102026163A CN102026163A CN2009101737245A CN200910173724A CN102026163A CN 102026163 A CN102026163 A CN 102026163A CN 2009101737245 A CN2009101737245 A CN 2009101737245A CN 200910173724 A CN200910173724 A CN 200910173724A CN 102026163 A CN102026163 A CN 102026163A
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Abstract
The invention provides a method and a device for selecting an access to the Internet through a wireless fidelity (WiFi) access network. In the method, a dual-mode terminal carries out initial access authentication in the WiFi access network and acquires an IWK (Interworking function) address; the terminal acquires a local IP address allocated by a WiFi access network DHCP (Dynamic Host Configuration Protocol) server and used for a direct IP connection mode; the terminal acquires a remote IP address allocated by a WiMAX (World Interoperability for Microwave Access) network DHCP server and used for a WiMAX IP connection mode according to the IWK address and the local IP address; and the terminal receives the selection of a user to the direct IP connection mode or the WiMAX IP connection mode and completes different types of Internet access according to the selected IP connection mode. The invention provides flexible Internet access, improves user experience and solves the problem that the user experience is influenced due to great influence because the upgrading of the entire traditional WiFi network is required in related technologies.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of method and device that inserts Internet by adopting wireless fidelity technology WiFi access network selection.
Background technology
WiMAX (World Interoperability for Microwave Access, whole world inserting of microwave interoperability) is based on the wireless access wide band technology of IEEE 802.16 standards, can effectively utilizes the limited wireless frequency spectrum resource and obtain bigger bandwidth of air-interface (the highest 70Mbps data transmission capabilities) and wider transmission coverage (transmission of wireless signals is apart from reaching 60 kilometers farthest).WiFi (Wireless Fidelity, adopting wireless fidelity technology) network also is the wireless network that higher bandwidth can be provided, and disposes in a large number in office, family and hotels and other places at present.But WiFi is as a kind of short distance wireless technical, and its network coverage less (about about 100 meters) generally can only replenishing as other wireless technology networking.But the WiFi network has advantages such as the networking expense is low, easy deployment, and if WiMAX builds up the network that covers the whole nation, its cost of investment will be very high, so WiFi and WiMAX network will coexist in quite over a long time.Consider WiMAX as a kind of wireless metropolitan area network technology, it can be connected to the Internet with Wi-Fi Hotspot.The intercommunication of WiMAX and two kinds of networks of WiFi will help two network advantages complementations, and expand the coverage area, allow the mobile subscriber in different Radio Access Network environment, can utilize two characteristics that network is different separately widely in the geographic range, can obtain consistent Operational Visit again.
Network interworking between WiMAX system and the WiFi system helps two network advantages complementations, enlarge the coverage of network, allow mobile subscriber equipment in different Radio Access Network environment, utilize two characteristics that network is different separately, obtain consistent Operational Visit.Fig. 1 shows MS/STA (Mobile Station/STAtion, terminal equipment) and is in the structured flowchart that passes through the WiMAX wireless access network under the non-roaming situation and pass through WiFi Access Network access WiMAX core net, comprises following network element:
IWK (Interworking Function, IWF node): be responsible for terminal initially insert the WiMAX network by the WiFi network and coordinate terminal from the WiMAX Access Network to the switching the WiFi Access Network;
WiFi SFF (WiFi Signal Forward Function, WiFi signaling forwarding capability): be responsible for terminal at the WiMAX Access Network when the WiFi Access Network switches, be established to its IP tunnel by the WiMAX network, and transmit the pre-registration signaling of terminal by the WiFi access of IP tunnel transmission;
WiMAX SFF (WiMAX Signal Forward Function, WiMAX signaling forwarding capability): be responsible for terminal and carry out the pre-registration process that WiMAX inserts, and terminal is carried out the dummy source BS function that switches to the WiMAX network by the WiFi network;
AP (Access Point, wireless access node): being positioned at the WiFi Access Network, is a hub that possesses the wireless signal transmission function, and it can be many radio networking devices the dialogue tandem is provided.Be equivalent to the hub or switch in the cable network;
Local AAA (Authentication, Authorisation and Accounting, authentication and authorization charging) agency: be positioned at the WiFi Access Network, be responsible for transmitting RADIUS (Remote Authentication Dial In User Service, remote customer dialing authentication service) authentication and metering data bag;
AC (Access Controller, access controller): be positioned at the WiFi Access Network, between WiFi and Internet, play gateway function, will converge, insert Internet from the data of different AP.AC can come to finish for the user functions such as access authentication and authentication by operator logo as client;
System also comprises aaa server, Dynamic Host Configuration Protocol server (Dynamic Host Configuration Protocol Server, Dynamic Host Configuration Protocol server) and HA/LMA (Home Agent/Local Mobility Anchor, home agent/regional mobile anchor point) etc.
In the intercommunication network framework of Fig. 1, the WiFi Access Network provides the ownership routing mode to the WiMAX home network by IWK, also provides the WiFi Access Network directly to arrive the local access mode that Internet inserts.For local access mode, data flow does not need the user's face passage through the WiMAX network, can reduce the load of the data flow of WiMAX network.Operator can provide service for the user by more flexible, effective and efficient manner, thereby improves user experience.
A kind of method that inserts Internet by the WiFi access network selection is provided in the correlation technique, referring to Fig. 2, this method provides two kinds of Internet cut-in methods for the user: direct IP connected mode and WiMAX IP connected mode, be that the WiFi Access Network can provide multiple connection to select, as be connected to the WiMAX service network or be directly connected to the Internet network by the WiFi Access Network by traditional approach.The configuration of WiFi Access Network has the empty AP mode of a plurality of SSID (Service Set Identity), if WiFi operator supports the intercommunication with WiMAX, what then one of them SSID is configured to that the user can discern is SSID sign with the WiMAX intercommunication, as " WiMAX IWK ".If the user selects the SSID with the WiMAX intercommunication, then the WiFi Access Network is linked into WiMAX CSN (Common Services Network, queueing network) network with customer service; If the user selects common SSID, then the WiFi Access Network directly is linked into customer service the Internet network.This method.
The inventor finds to insert the method for Internet because its WiFi Access Network need be supported a plurality of empty AP by the WiFi access network selection in the correlation technique, each empty AP all disposes different SSID, and the local area network (LAN)s different according to different SSID configurations connect, so need carry out the whole network upgrading to traditional WiFi network, influence huge, and after the SSID of user's selection and WiMAX intercommunication passes through WiMAX network route, if the user wishes to switch to local the access, also need to rescan the WiFi Access Network, select the SSID of non-intercommunication, cause the efficient of network insertion lower, real time of data transmission is relatively poor, thereby influences user experience.
Summary of the invention
The present invention aims to provide a kind of method and device that inserts Internet by the WiFi access network selection, the method that can solve in the correlation technique need be carried out the whole network upgrading to traditional WiFi network, influence huge, and the efficient of network insertion is lower, real time of data transmission is relatively poor, thereby influences the problem of user experience.
To achieve these goals, according to an aspect of the present invention, a kind of method that inserts Internet by the WiFi access network selection is provided, may further comprise the steps: support the dual-mode terminal that WiFi inserts and WiMAX inserts under the WiFi Access Network, to carry out initial access authentication, and obtain the IWK address of IWK; Terminal is obtained the local ip address of first Dynamic Host Configuration Protocol server distribution of WiFi Access Network, and the Internet that local ip address is used for direct IP connection mode inserts; Terminal is obtained the far-end IP address of second Dynamic Host Configuration Protocol server distribution of WiMAX network according to IWK address and local ip address, and the Internet that far-end IP address is used for the WiMAXIP connection mode inserts; Terminal receives the selection of direct IP connection mode of user or WiMAX IP connection mode, and inserts according to finishing Internet with the corresponding IP of selected IP connection mode address.
Preferably, in said method, obtain the IWK address and specifically comprise: terminal is obtained the IWK address by Extensible Authentication Protocol EAP (Extensible Authentication Protocol) authentication.
Preferably, in said method, obtain the IWK address and specifically comprise: terminal is by DHCP acquisition request IWK address.
Preferably, in said method, obtain the IWK address and specifically comprise: terminal is obtained the IWK address by domain name system DNS (Domain Name System) inquiry.
Preferably, in said method, the local ip address that terminal is obtained first Dynamic Host Configuration Protocol server distribution of WiFi Access Network specifically comprises: terminal sends first dhcp discover message to the WiFi Access Network; The WiFi Access Network sends a DHCP by first Dynamic Host Configuration Protocol server to terminal and gives information, and a DHCP gives information and comprises local ip address; Terminal sends a DHCP request message to the WiFi Access Network, and a DHCP request message comprises local ip address; The WiFi Access Network sends a DHCP acknowledge message to terminal, and a DHCP acknowledge message comprises the local ip address and first configuration parameter.
Preferably, in said method, terminal is obtained the far-end IP address that second Dynamic Host Configuration Protocol server of WiMAX network distributes according to IWK address and local ip address and specifically comprised: terminal is established to the IP tunnel of IWK according to IWK address and local ip address; Terminal is obtained the far-end IP address of second Dynamic Host Configuration Protocol server distribution of WiMAX network by IP tunnel.
Preferably, in said method, terminal specifically comprises by the far-end IP address that IP tunnel obtains second Dynamic Host Configuration Protocol server distribution of WiMAX network: terminal sends second dhcp discover message by IP tunnel to IWK; IWK sends mobile IP MIP (Mobile Internet Protocol) login request message/agent binding update messages to the HA/LMA of WiMAX network; HA/LMA returns MIP registration reply message/proxy binding acknowledgment messages to IWK, and MIP registration reply message/proxy binding acknowledgment messages comprises far-end IP address; IWK returns the 2nd DHCP by IP tunnel to terminal and gives information, and the 2nd DHCP gives information and comprises far-end IP address; Terminal sends the 2nd DHCP request message to IWK, and the 2nd DHCP request message comprises far-end IP address; IWK sends the 2nd DHCP acknowledge message to terminal, and the 2nd DHCP acknowledge message comprises the far-end IP address and second configuration parameter.
Preferably, in said method, terminal receives the selection of user to direct IP connection mode or WiMAX IP connection mode, and insert and specifically to comprise according to finishing Internet with the corresponding IP of selected IP connection mode address: terminal is when initiating service application, the prompting user selects the IP connection mode, and the IP connection mode comprises direct IP connection mode and WiMAX IP connection mode; If the user selects direct IP connection mode, then the terminal local ip address is set to the source address of business datum, and realizes directly inserting by the Internet of WiFi Access Network.
Preferably, in said method, terminal receives the selection of user to direct IP connection mode or WiMAX IP connection mode, and insert and specifically to comprise according to finishing Internet with the corresponding IP of selected IP connection mode address: terminal is when initiating service application, the prompting user selects the IP connection mode, and the IP connection mode comprises direct IP connection mode and WiMAX IP connection mode; If the user selects WiMAX IP connection mode, then the terminal far-end IP address is set to the source address of business datum, and is implemented to the Internet access of WiMAX network by the tunnel between terminal and the IWK.
To achieve these goals, according to a further aspect in the invention, a kind of device that inserts Internet by the WiFi access network selection also is provided, comprise: the IWK address acquisition module, be used to support that the dual-mode terminal that WiFi inserts and global inserting of microwave interoperability WiMAX inserts carries out initial access authentication under the WiFi Access Network, and obtain the IWK address of IWK; The local ip address acquisition module is used for terminal and obtains the local ip address that first Dynamic Host Configuration Protocol server of WiFi Access Network distributes, and the Internet that local ip address is used for direct IP connection mode inserts; The far-end IP address acquisition module is used for terminal and obtains the far-end IP address of second Dynamic Host Configuration Protocol server distribution of WiMAX network according to IWK address and local ip address, and the Internet that far-end IP address is used for WiMAX IP connection mode inserts; Access module is used for terminal and receives the selection of user to direct IP connection mode or WiMAX IP connection mode, and inserts according to finishing Internet with the corresponding IP of selected IP connection mode address.
Preferably, in said apparatus, the IWK address acquisition module specifically comprises: Extensible Authentication Protocol EAP authenticating unit is used for terminal and obtains the IWK address by the EAP authentication.
Preferably, in said apparatus, the IWK address acquisition module specifically comprises: the DHCP request unit is used for terminal by DHCP acquisition request IWK address.
Preferably, in said apparatus, the IWK address acquisition module specifically comprises: the domain name system DNS query unit is used for terminal and obtains the IWK address by the DNS inquiry.
WiFi Access Network terminal in the foregoing description is at first obtained the IWK address in initial access authentication process, obtain the local ip address of first Dynamic Host Configuration Protocol server distribution of WiFi Access Network then, obtain the far-end IP address of second Dynamic Host Configuration Protocol server distribution of WiMAX network according to IWK address and local ip address again, receive the selection of user at last, and finish Internet according to selected IP address and insert local ip address or far-end IP address.Because terminal has successively been obtained local ip address and far-end IP address, the user is directly selecting in IP connected mode and the WiMAX IP connected mode, can finish selection to above two kinds of IP addresses, terminal can be finished Internet easily according to the IP address of correspondence and insert, improve the efficient and the real time of data transmission of network insertion, improved user experience.Insert to realize Internet by means of empty AP because need not with SSID, need carry out the whole network upgrading to traditional WiFi network so overcome the Internet cut-in method that is used for the WiFi Access Network in the correlation technique, influence huge, and the efficient of network insertion is lower, real time of data transmission is relatively poor, thereby influences the problem of user experience.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows MS/STA and is in the structured flowchart that passes through the WiMAX Access Network and insert the WiMAX core net by the WiFi Access Network under the non-roaming situation;
Fig. 2 shows the schematic diagram of selecting to insert the Internet method in the correlation technique;
Fig. 3 shows the flow chart that inserts the Internet method according to the selection of first embodiment of the invention;
Fig. 4 shows the flow chart that inserts the Internet method according to the selection of second embodiment of the invention;
Fig. 5 shows the flow chart that inserts the Internet method according to the selection of third embodiment of the invention;
Fig. 6 shows the structure chart that inserts the Internet device according to the selection of fourth embodiment of the invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 3 shows the flow chart that inserts the Internet method according to the selection of first embodiment of the invention, and this method may further comprise the steps:
The dual-mode terminal that support WiFi in the present embodiment inserts and WiMAX inserts at first obtains the IWK address in the initial access authentication process under the WiFi Access Network, obtain then that first Dynamic Host Configuration Protocol server of WiFi Access Network distributes, the local ip address that is used for direct IP connection mode, obtain according to IWK address and local ip address again that second Dynamic Host Configuration Protocol server of WiMAX network distributes, the far-end IP address that is used for WiMAX IP connection mode, receive the selection of user at last, and insert according to finishing Internet with the corresponding IP of selected IP connection mode address to direct IP connection mode or WiMAX IP connection mode.Present embodiment is applied in WiMAX network and the WiFi network interworking framework, the dual-mode terminal of terminal wherein for supporting that WiFi inserts and WiMAX inserts.Because terminal has successively been obtained local ip address and far-end IP address, the user is directly selecting in IP connected mode and the WiMAX IP connected mode, can finish selection to above two kinds of IP addresses, terminal can be finished Internet easily according to the IP address of correspondence and insert, improve the efficient and the real time of data transmission of network insertion, improved user experience.Insert to realize Internet by means of empty AP because need not with SSID, need carry out the whole network upgrading to traditional WiFi network so overcome the Internet cut-in method that is used for the WiFi Access Network in the correlation technique, influence huge, and the efficient of network insertion is lower, real time of data transmission is relatively poor, thereby influences the problem of user experience.
Preferably, in said method, obtain the IWK address and specifically comprise: terminal is obtained the IWK address by the EAP authentication.Terminal is obtained the IWK address by the EAP authentication in the present embodiment, specifically be included in the EAP authentication process, in terminal and aaa server, produce master session key MSK (Master Session Key), aaa server passes to the WiFi Access Network with MSK, and IWK carries its address (being IWK) to terminal by EAP message in the EAP authentication process.Present embodiment has made full use of the EAP authentication process of terminal, has improved the efficient of obtaining of IWK address, has saved Internet resources.
Preferably, in said method, obtain the IWK address and specifically comprise: terminal is by DHCP acquisition request IWK address.Terminal asks to obtain the IWK address by DHCP in the present embodiment, and promptly terminal is obtained the IWK address alternately by carrying out dhcp message with IWK.Do like this, make that obtaining of IWK address is simple.
Preferably, in said method, obtain the IWK address and specifically comprise: terminal is obtained the IWK address by the DNS inquiry.Do like this, make that obtaining of IWK address is simple.
Preferably, in said method, step 302 specifically comprises: terminal sends first dhcp discover message to the WiFi Access Network; The WiFi Access Network sends a DHCP by first Dynamic Host Configuration Protocol server to terminal and gives information, and a DHCP gives information and comprises local ip address; Terminal sends a DHCP request message to the WiFi Access Network, and a DHCP request message comprises local ip address; The WiFi Access Network sends a DHCP acknowledge message to terminal, and a DHCP acknowledge message comprises the local ip address and first configuration parameter.
Terminal at first sends first dhcp discover message to the WiFi Access Network in the present embodiment, be used to find that Dynamic Host Configuration Protocol server is to carry out the host ip configuration, the WiFi Access Network includes local ip address the one DHCP by first Dynamic Host Configuration Protocol server to the terminal transmission and gives information, terminal sends a DHCP request message to the WiFi Access Network again, last WiFi Access Network sends a DHCP acknowledge message to confirm the use of local ip address to terminal, and other configuration parameters of being correlated with in the time of will adopting direct access way simultaneously also are carried on and wherein pass to terminal.Present embodiment has realized that terminal is to the obtaining of local ip address and relevant configured parameter, for carrying out providing precondition by the direct access way of WiFi Access Network.
Preferably, in said method, step 303 specifically comprises: terminal is established to the IP tunnel of IWK according to IWK address and local ip address; Terminal is obtained the far-end IP address of second Dynamic Host Configuration Protocol server distribution of WiMAX network by IP tunnel.
Terminal at first is established to the IP tunnel of IWK in the present embodiment according to the local ip address that obtains in IWK address that obtains in the step 301 and the step 302, obtains far-end IP address by this IP tunnel then.Just because of the function of IWK intercommunication between WiFi Access Network and WiMAX network, present embodiment is just built passage with the WiMAX network to obtain far-end IP address by setting up IP tunnel with IWK.
Preferably, in said method, terminal specifically comprises by the far-end IP address that IP tunnel obtains second Dynamic Host Configuration Protocol server distribution of WiMAX network: terminal sends second dhcp discover message by IP tunnel to IWK; IWK sends MIP login request message/agent binding update messages to the HA/LMA of WiMAX network; HA/LMA returns MIP registration reply message/proxy binding acknowledgment messages to IWK, and MIP registration reply message/proxy binding acknowledgment messages comprises far-end IP address; IWK returns the 2nd DHCP by IP tunnel to terminal and gives information, and the 2nd DHCP gives information and comprises far-end IP address; Terminal sends the 2nd DHCP request message to IWK, and the 2nd DHCP request message comprises far-end IP address; IWK sends the 2nd DHCP acknowledge message to terminal, and the 2nd DHCP acknowledge message comprises the far-end IP address and second configuration parameter.
Terminal has realized obtaining far-end IP address by above-mentioned interacting message in the present embodiment, wherein after IWK and HA/LMA carry out MIP registration/agent binding interacting message, IWK and HA/LMA have set up MIP/PMIP (Proxy Mobile IP, act on behalf of mobile IP) tunnel, this MIP/PMIP tunnel and IP tunnel are the transmission path of business data packet when adopting WiMAX IP access way, so present embodiment has guaranteed have when user's business reaches when the WiMAX network, can normally offer the user.Present embodiment has realized that terminal is to the obtaining of far-end IP address and relevant configured parameter, for carrying out providing precondition by the WiMAX IP access way of WiFi Access Network.
Preferably, in said method, step 304 specifically comprises: terminal is when initiating service application, and the prompting user selects the IP connection mode, and the IP connection mode comprises direct IP connection mode and WiMAX IP connection mode; If the user selects direct IP connection mode, then the terminal local ip address is set to the source address of business datum, and realizes directly inserting by the Internet of WiFi Access Network.
Present embodiment is selected the situation of direct IP connection mode for the user, this moment, terminal was used the source address of local terminal IP address as business datum, the WiFi Access Network directly is routed to business data packet its direct-connected Internet, and the WiFi Access Network may use network address translation NAT (Network Address Translation) technology that local ip address is converted to legal IP address in the external IP network.Present embodiment has been realized inserting by the Internet of the direct IP connection mode of WiFi Access Network simply and easily.
Fig. 4 shows the flow chart according to the Internet cut-in method of second embodiment of the invention, and this method may further comprise the steps:
Step 401, starting up of terminal also carries out the discovery and the selection of WiFi Access Network;
Step 402, terminal are carried out the association process of the WiFi Access Network of selecting;
Step 403, terminal is used the EAP method of 802.1X/EAPOL and selection, carry out the EAP authentication process of aaa server by the WiFi Access Network, in the EAP authentication process, the MSK that in terminal and aaa server, produces, aaa server passes to the WiFi Access Network with MSK, and intercommunication IWK carries its address to terminal by EAP message in the EAP authentication process, IWK also can pass to terminal by mechanism such as DHCP information request or DNS inquiries except in the EAP authentication process IWK address being passed to the terminal;
Step 404, after the EAP authentication process was finished, the WiFi Access Network was derived pairwise master key PMK (Pairwise Master Key) according to MSK;
Step 405, the authentication device in terminal and the WiFi Access Network is carried out 4 handshake procedures; In 4 handshake procedures, the authentication device of terminal and WiFi Access Network is derived pair temporal key PTK (Pairwise Transient Key) according to PMK;
Step 406, shake hands for 4 times finish after, the open 802.1x port of WiFi Access Network;
Step 407, terminal send dhcp discover message and are used to find that to the WiFi Access Network Dynamic Host Configuration Protocol server is to carry out the host ip configuration;
Step 408, the WiFi Access Network Dynamic Host Configuration Protocol server by this locality is local ip address of terminal distribution and gives information by DHCP and to return to terminal;
Step 409, terminal sends the DHCP request message to the WiFi Access Network, carries the IP address that obtains from DHCP gives information;
Step 410, the WiFi Access Network returns the DHCP acknowledge message to terminal, confirms the use of this IP address and carries other configuration parameters to terminal;
Step 411, terminal use local terminal IP address to be established to the IP tunnel of IWK according to the IWK address of returning in the step 403EAP authentication process;
Step 412, terminal sends dhcp discover message by this IP tunnel, is used for the Dynamic Host Configuration Protocol server request far-end IP address to the WiMAX network;
Step 413 after IWK receives dhcp discover message by IP tunnel, sends MIP login request message/agent binding update messages to the HA/LMA of WiMAX CSN network;
Step 414, the HA/LMA of WiMAX CSN network returns MIP registration reply message/agent binding update acknowledge message, wherein is included as the far-end IP address of terminal to apply; Like this, set up the MIP/PMIP tunnel between HA/LMA and the IWK;
Step 415, IWK returns DHCP by IP tunnel to terminal and gives information, and wherein comprises the far-end IP address that the WiMAX network is a terminal to apply;
Step 416, terminal sends the DHCP request message by IP tunnel to IWK, carries the far-end IP address of obtaining from DHCP gives information;
Step 417, IWK returns the DHCP acknowledge message by IP tunnel to terminal, confirm the use of this IP address and carry other configuration parameters to terminal, to be established to WiMAX network HA/LMA purpose of connecting be to have when user's business reaches when the WiMAX network in order to guarantee to terminal in step 411～417, can normally offer the user;
Step 418, when the user used by terminal originating service, terminal was to user prompt service selection mode: directly IP mode, or WiMAX IP mode;
Step 419, if the user selects direct IP mode, then terminal is used the source address of local terminal address as business datum, the WiFi Access Network directly is routed to business data packet its direct-connected external IP network; The WiFi Access Network may use the NAT technology that local ip address is converted to legal IP address in the external IP network.
Present embodiment has been realized in WiMAX network and WiFi network interworking framework, when the dual-mode terminal of supporting WiMAX access and WiFi to insert passes through the access of WiFi Access Network, adopts the access of direct IP connected mode to outside Internet network.
Preferably, in said method, step 304 specifically comprises: terminal is when initiating service application, and the prompting user selects the IP connection mode, and the IP connection mode comprises direct IP connection mode and WiMAX IP connection mode; If the user selects WiMAX IP connection mode, then the terminal far-end IP address is set to the source address of business datum, and is implemented to the Internet access of WiMAX network by the tunnel between terminal and the IWK.
Present embodiment is selected the situation of WiMAX IP connection mode for the user, this moment, terminal was used the source address of the far-end IP address of WiMAX network allocation as business datum, this business data packet is forwarded to IWK through the IP tunnel of WiFi Access Network, send to HA/LMA by IWK by the MIP/PMIP tunnel again, and business data packet is routed to the external IP network that is connected with the WiMAX network by HA/LMA; The WiFi Access Network may use the NAT technology that local ip address is converted to legal IP address in the external IP network.Present embodiment has realized that simply and easily the Internet of WiMAX IP connection mode inserts.
Fig. 5 shows the flow chart according to the Internet cut-in method of third embodiment of the invention, and this method may further comprise the steps:
Step 501, starting up of terminal also carries out the discovery and the selection of WiFi Access Network;
Step 502, terminal are carried out the association process of the WiFi Access Network of selecting;
Step 503, terminal is used the EAP method of 802.1X/EAPOL and selection, carry out the EAP authentication process of aaa server by the WiFi Access Network, in the EAP authentication process, the MSK that in terminal and aaa server, produces, aaa server passes to the WiFi Access Network with MSK, and intercommunication IWK carries its address to terminal by EAP message in the EAP authentication process, IWK also can pass to terminal by mechanism such as DHCP information request or DNS inquiries except in the EAP authentication process IWK address being passed to the terminal;
Step 504, after the EAP authentication process was finished, the WiFi Access Network was derived PMK according to MSK;
Step 505, the authentication device in terminal and the WiFi Access Network is carried out 4 handshake procedures; In 4 handshake procedures, the authentication device of terminal and WiFi Access Network is derived PTK according to PMK;
Step 506, shake hands for 4 times finish after, the open 802.1x port of WiFi Access Network;
Step 507, terminal send dhcp discover message and are used to find that to the WiFi Access Network Dynamic Host Configuration Protocol server is to carry out the host ip configuration;
Step 508, the WiFi Access Network Dynamic Host Configuration Protocol server by this locality is local ip address of terminal distribution and gives information by DHCP and to return to terminal;
Step 509, terminal sends the DHCP request message to the WiFi Access Network, carries the IP address that obtains from DHCP gives information;
Step 510, the WiFi Access Network returns the DHCP acknowledge message to terminal, confirms the use of this IP address and carries other configuration parameters to terminal;
Step 511, terminal use local terminal IP address to be established to the IP tunnel of IWK according to the IWK address of returning in the step 403EAP authentication process;
Step 512, terminal sends dhcp discover message by this IP tunnel, is used for the Dynamic Host Configuration Protocol server request far-end IP address to the WiMAX network;
Step 513 after IWK receives dhcp discover message by IP tunnel, sends MIP login request message/agent binding update messages to the HA/LMA of WiMAX CSN network;
Step 514, the HA/LMA of WiMAX CSN network returns MIP registration reply message/agent binding update acknowledge message, wherein is included as the far-end IP address of terminal to apply; Like this, set up the MIP/PMIP tunnel between HA/LMA and the IWK;
Step 515, IWK returns DHCP by IP tunnel to terminal and gives information, and wherein comprises the far-end IP address that the WiMAX network is a terminal to apply;
Step 516, terminal sends the DHCP request message by IP tunnel to IWK, carries the far-end IP address of obtaining from DHCP gives information;
Step 517, IWK returns the DHCP acknowledge message by IP tunnel to terminal, confirm the use of this IP address and carry other configuration parameters to terminal, to be established to WiMAX network HA/LMA purpose of connecting be to have when user's business reaches when the WiMAX network in order to guarantee to terminal in step 411～417, can normally offer the user;
Step 518, when the user used by terminal originating service, terminal was to user prompt service selection mode: directly IP mode, or WiMAX IP mode;
Step 519, if the user selects WiMAX IP mode, then terminal need obtain the WiMAX network allocation the IP address as far-end address, and carry out business by this address.Be specially terminal and use the source address of the far-end IP address of WiMAX network allocation as business datum, this business data packet is forwarded to IWK through the IP tunnel of WiFi Access Network, send to HA/LMA by IWK by the MIP/PMIP tunnel again, and business data packet is routed to the external IP network that is connected with the WiMAX network by HA/LMA.The WiFi Access Network may use the NAT technology that local ip address is converted to legal IP address in the external IP network.
Present embodiment has been realized in WiMAX network and WiFi network interworking framework, when the dual-mode terminal of supporting WiMAX access and WiFi to insert passes through the access of WiFi Access Network, adopts the access of WiMAX IP mode to outside Internet network.
Fig. 6 shows the structure chart according to the Internet access device of fourth embodiment of the invention, and this device comprises:
IWK address acquisition module 601, the terminal that is used for the WiFi Access Network is carried out initial access authentication, and obtains the IWK address of IWK;
Local ip address acquisition module 602 is used for terminal and obtains the local ip address that first Dynamic Host Configuration Protocol server of WiFi Access Network distributes;
Far-end IP address acquisition module 603 is used for terminal is obtained second Dynamic Host Configuration Protocol server distribution of WiMAX network according to IWK address and local ip address far-end IP address;
The dual-mode terminal that support WiFi in the present embodiment inserts and WiMAX inserts at first adopts in the initial access authentication process of IWK address acquisition module 601 under the WiFi Access Network and obtains the IWK address, first Dynamic Host Configuration Protocol server that adopts local ip address acquisition module 602 to obtain the WiFi Access Network then distributes, the local ip address that is used for direct IP connection mode, adopt far-end IP address acquisition module 603 to obtain according to IWK address and local ip address that second Dynamic Host Configuration Protocol server of WiMAX network distributes again, the far-end IP address that is used for WiMAX IP connection mode, adopt access module 604 to receive the selection of user at last, and insert according to finishing Internet with the corresponding IP of selected IP connection mode address to direct IP connection mode or WiMAX IP connection mode.Present embodiment is applied in WiMAX network and the WiFi network interworking framework, the dual-mode terminal of terminal wherein for supporting that WiFi inserts and WiMAX inserts.Because terminal has successively been obtained local ip address and far-end IP address, the user is directly selecting in IP connected mode and the WiMAX IP connected mode, can finish selection to above two kinds of IP addresses, terminal can be finished Internet easily according to the IP address of correspondence and insert, improve the efficient and the real time of data transmission of network insertion, improved user experience.Insert to realize Internet by means of empty AP because need not with SSID, need carry out the whole network upgrading to traditional WiFi network so overcome the Internet cut-in method that is used for the WiFi Access Network in the correlation technique, influence huge, and the efficient of network insertion is lower, real time of data transmission is relatively poor, thereby influences the problem of user experience.
Preferably, in said apparatus, IWK address acquisition module 601 specifically comprises: the EAP authenticating unit is used for terminal and obtains the IWK address by the EAP authentication.Terminal adopts the EAP authenticating unit to obtain the IWK address in the present embodiment, specifically be included in the EAP authentication process, in terminal and aaa server, produce MSK, aaa server passes to the WiFi Access Network with MSK, and IWK carries its address (being IWK) to terminal by EAP message in the EAP authentication process.Present embodiment has made full use of the EAP authentication process of terminal, has improved the efficient of obtaining of IWK address, has saved Internet resources.
Preferably, in said apparatus, IWK address acquisition module 601 specifically comprises: the DHCP request unit is used for terminal by DHCP acquisition request IWK address.Terminal adopts the DHCP request unit to obtain the IWK address in the present embodiment, and promptly terminal is obtained the IWK address alternately by carrying out dhcp message with IWK.Do like this, make that obtaining of IWK address is simple.
Preferably, in said apparatus, IWK address acquisition module 601 specifically comprises: the DNS query unit is used for terminal and obtains the IWK address by the DNS inquiry.Do like this, make that obtaining of IWK address is simple.
As can be seen from the above description, the above embodiments of the present invention provide Internet access flexibly, have improved the efficient and the real time of data transmission of network insertion, have improved user experience.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. the method by adopting wireless fidelity technology WiFi access network selection access Internet is characterized in that, may further comprise the steps:
Support the dual-mode terminal that WiFi inserts and global inserting of microwave interoperability WiMAX inserts under the WiFi Access Network, to carry out initial access authentication, and obtain the IWK address of IWF node IWK;
Described terminal is obtained the local ip address of the first dynamic host configuration protocol DHCP server-assignment of described WiFi Access Network, and the Internet that described local ip address is used for direct IP connection mode inserts;
Described terminal is obtained the far-end IP address of second Dynamic Host Configuration Protocol server distribution of global inserting of microwave interoperability WiMAX network according to described IWK address and described local ip address, and the Internet that described far-end IP address is used for WiMAX IP connection mode inserts;
Described terminal receives the selection of user to described direct IP connection mode or described WiMAX IP connection mode, and inserts according to finishing Internet with the corresponding IP of selected IP connection mode address.
2. method according to claim 1 is characterized in that, obtains the IWK address and specifically comprises:
Described terminal is obtained described IWK address by Extensible Authentication Protocol EAP authentication.
3. method according to claim 1 is characterized in that, obtains the IWK address and specifically comprises:
Described terminal is by the described IWK of DHCP acquisition request address.
4. method according to claim 1 is characterized in that, obtains the IWK address and specifically comprises:
Described terminal is obtained described IWK address by the domain name system DNS inquiry.
5. method according to claim 1 is characterized in that, the local ip address that described terminal is obtained first Dynamic Host Configuration Protocol server distribution of described WiFi Access Network specifically comprises:
Described terminal sends first dhcp discover message to described WiFi Access Network;
Described WiFi Access Network sends a DHCP by described first Dynamic Host Configuration Protocol server to described terminal and gives information, and a described DHCP gives information and comprises described local ip address;
Described terminal sends a DHCP request message to described WiFi Access Network, and a described DHCP request message comprises described local ip address;
Described WiFi Access Network sends a DHCP acknowledge message to described terminal, and a described DHCP acknowledge message comprises the described local ip address and first configuration parameter.
6. method according to claim 1 is characterized in that, described terminal is obtained the far-end IP address that second Dynamic Host Configuration Protocol server of WiMAX network distributes according to described IWK address and described local ip address and specifically comprised:
Described terminal is established to the IP tunnel of described IWK according to described IWK address and described local ip address;
Described terminal is obtained the far-end IP address of second Dynamic Host Configuration Protocol server distribution of WiMAX network by described IP tunnel.
7. method according to claim 6 is characterized in that, described terminal specifically comprises by the far-end IP address that described IP tunnel obtains second Dynamic Host Configuration Protocol server distribution of WiMAX network:
Described terminal sends second dhcp discover message by described IP tunnel to described IWK;
Described IWK sends mobile IP MIP login request message/agent binding update messages to the home agent/regional mobile anchor point HA/LMA of described WiMAX network;
Described HA/LMA returns MIP registration reply message/proxy binding acknowledgment messages to described IWK, and described MIP registration reply message/proxy binding acknowledgment messages comprises described far-end IP address;
Described IWK returns the 2nd DHCP by described IP tunnel to described terminal and gives information, and described the 2nd DHCP gives information and comprises described far-end IP address;
Described terminal sends the 2nd DHCP request message to described IWK, and described the 2nd DHCP request message comprises described far-end IP address;
Described IWK sends the 2nd DHCP acknowledge message to described terminal, and described the 2nd DHCP acknowledge message comprises the described far-end IP address and second configuration parameter.
8. method according to claim 1 is characterized in that, described terminal receives the selection of user to described direct IP connection mode or described WiMAX IP connection mode,
And insert and specifically to comprise according to finishing Internet with the corresponding IP of selected IP connection mode address:
Described terminal points out described user that the IP connection mode is selected when initiating service application, and described IP connection mode comprises direct IP connection mode and WiMAXIP connection mode;
If described user selects described direct IP connection mode, the described local ip address of then described terminal is set to the source address of business datum, and realizes directly inserting by the Internet of described WiFi Access Network.
9. method according to claim 1, it is characterized in that, described terminal receives the selection of user to described direct IP connection mode or described WiMAX IP connection mode, and specifically comprises according to finishing the Internet access with the corresponding IP of selected IP connection mode address:
Described terminal points out described user that the IP connection mode is selected when initiating service application, and described IP connection mode comprises direct IP connection mode and WiMAXIP connection mode;
If described user selects described WiMAX IP connection mode, the described far-end IP address of then described terminal is set to the source address of business datum, and is implemented to the Internet access of described WiMAX network by the tunnel between described terminal and the described IWK.
10. the device by adopting wireless fidelity technology WiFi access network selection access Internet is characterized in that, comprising:
IWF node IWK address acquisition module is used to support that the dual-mode terminal that WiFi inserts and global inserting of microwave interoperability WiMAX inserts carries out initial access authentication under the WiFi Access Network, and obtains the IWK address of IWK;
The local ip address acquisition module is used for the local ip address that described terminal is obtained the first dynamic host configuration protocol DHCP server-assignment of described WiFi Access Network, and the Internet that described local ip address is used for direct IP connection mode inserts;
The far-end IP address acquisition module, be used for described terminal and obtain the far-end IP address of second Dynamic Host Configuration Protocol server distribution of global inserting of microwave interoperability WiMAX network according to described IWK address and described local ip address, the Internet that described far-end IP address is used for WiMAX IP connection mode inserts;
Access module is used for described terminal and receives the selection of user to described direct IP connection mode or described WiMAX IP connection mode, and inserts according to finishing Internet with the corresponding IP of selected IP connection mode address.
11. device according to claim 10 is characterized in that, described IWK address acquisition module specifically comprises:
Extensible Authentication Protocol EAP authenticating unit is used for described terminal and obtains described IWK address by the EAP authentication.
12. device according to claim 10 is characterized in that, described IWK address acquisition module specifically comprises:
The DHCP request unit is used for described terminal by the described IWK of DHCP acquisition request address.
13. device according to claim 10 is characterized in that, described IWK address acquisition module specifically comprises:
The domain name system DNS query unit is used for described terminal and obtains described IWK address by the DNS inquiry.
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