CN103249041A - Method and device for integrating wireless local area network and wireless cellular network - Google Patents
Method and device for integrating wireless local area network and wireless cellular network Download PDFInfo
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Abstract
The invention provides a method and a device for integrating a wireless local area network (WLAN) and a wireless cellular network. The method comprises the followings steps: a baseband basic unit (BBU) of the wireless cellular network forwards authentication request information from a WLAN terminal to a core network of the wireless cellular network; the BBU forwards the authentication respond information from the core network to the WLAN terminal to complete the authentication of the core network to the WLAN terminal; and after the authentication is passed, the BBU establishes a channel for the WLAN terminal to access the core network so as to enable the WLAN terminal to access the core network. The method and the device, provided by the invention solve the problems that the WLAN and the wireless cellular network can not be completely integrated, and the cost of the integrating scheme of the WLAN and the wireless cellular network are higher in the correlation techniques, and realize the effects that the WLAN and the wireless cellular network can be completely integrated, and the integrating costs of the two networks can be lowered, thereby realizing the effect that the WLAN can be quickly deployed on an existing cellular network.
Description
Technical field
The present invention relates to the communications field, in particular to method and the device of a kind of WLAN (wireless local area network) (Wireless Local Area Network abbreviates WLAN as) and wireless cellular network fusion.
Background technology
WLAN utilizes radio wave as transmission medium, a kind of technology of providing services on the Internet for the user in certain subrange, the WLAN technology is that fixed network is in the extension of wireless domain to a certain extent, insert part at message and adopt wireless technology, after message inserts, wireless local network connecting point (Wireless Local Area Network Access Point, abbreviate WLAN AP as) convert wireless message the form of wired message to, and wired message is transmitted in cable network.Cellular Networks is traditional 2G/3G/4G network that each operator builds, and originally designing Cellular Networks is for voice application, and along with the development of technology, Cellular Networks also more and more is used to do Packet Service.
WLAN and Cellular Networks have complementarity technically, and therefore, both fusions also are a kind of trend.The integration technology of existing WLAN and Cellular Networks has comparatively simple integration program, as shown in Figure 1, in this integration program, just in the access side Node B (NodeB)/enode b (eNodeB) and WLAN AP are placed on the equipment, the transmission of each network, the upstream control appliance, authentication, it all is separately independently that charging waits, continue to use traditional separately method, therefore, though this integration program is very simple, but WLAN and 3GPP system have just shared base station equipment, WLAN and Cellular Networks are still as the diverse two network runnings of throwing the net, fusion only concentrates on the part, and needs to upgrade the hardware facility of base station equipment.
In addition, the integration program that also has another kind of WLAN and Cellular Networks in the prior art, as shown in Figure 2, what this integration program mainly solved is that the WLAN terminal is used the Cellular Networks authenticating device, and WLAN terminal access Cellular Networks WAP (wireless application protocol) (Wireless Application Protocol, abbreviate WAP as) problem in territory, in this integration program, on the basis of original WLAN, PDG and 3GPP AAA Server equipment have been introduced, to realize WLAN and the authentication of 2G/3G network and the intercommunication of charging, in fusion process, 3GPP authentication and authorization charging (Authentication, Authorization and Accounting, abbreviating AAA as) server (Server) obtains authentication vector from attaching position register (Home Location Register abbreviates HLR as), and the WLAN terminal is carried out authentication, authentication produces charging bill by responsible afterwards, and charging bill is reached the BOSS system; And packet data gateway (Packet Data Gateway, abbreviating PDG as) function class of equipment is similar to ggsn (Gateway General Packet Radio Service Supporting Node, abbreviate GGSN as), by Wi interface accessing external network, yet, in this integration program, though realized that the fusion of WLAN and Cellular Networks is more tight, the HLR system of 3GPP that WLAN is multiplexing, but, WLAN and Cellular Networks be still as the diverse two network runnings of throwing the net, and merges only to concentrate on the part, and need newly-increased network element.
From the integration program of above-mentioned WLAN and Cellular Networks as can be seen, the fusion of WLAN and Cellular Networks only concentrates on the part, WLAN and Cellular Networks are still as the diverse two network runnings of throwing the net, do not have to realize truly WLAN and the fusion of Cellular Networks, and, in above-mentioned integration program, need existing equipment is carried out the renewal of hardware facility or increases new network element realizing the fusion of WLAN and Cellular Networks, thereby increased WLAN and Cellular Networks merges required cost.
At the problems referred to above in the correlation technique, effective solution is not proposed as yet at present.
Summary of the invention
In correlation technique, WLAN and Cellular Networks only are that local the fusion merged fully, and WLAN and the more high technical problem of Cellular Networks integration program cost the invention provides method and device that a kind of WLAN (wireless local area network) and wireless cellular network merge, to address the above problem at least.
According to an aspect of the present invention, the method that provides a kind of wireless lan (wlan) and wireless cellular network to merge, comprise: the authentication request information that the baseband processing unit BBU of wireless cellular network will come from the WLAN terminal is transmitted to the core net (Core Network abbreviates CN as) of wireless cellular network; The Authentication Response information that described BBU will come from described core net is transmitted to described WLAN terminal, to finish described core net to the authentication of described WLAN terminal; After authentication was passed through, described BBU set up the passage of the described core net of described WLAN terminal access, made the described core net of described WLAN terminal access.
The authentication information that above-mentioned BBU will come from the WLAN terminal is transmitted to before the core net of wireless cellular network, also comprises: BBU determines WLAN access point AP by the authentication of described BBU, and described BBU is managed described WLAN AP.
The authentication request information that above-mentioned BBU will come from the WLAN terminal is transmitted to the core net of wireless cellular network, comprise: described BBU gathers the authentication request information of described WLAN terminal, wherein, described authentication request information comprises: the identification information of described WLAN terminal; Described BBU is packaged into the message of the authentication message format of wireless cellular network with described IMSI information, and the message of encapsulation is sent to described equipment of the core network, to initiate authentication request.
The Authentication Response information that above-mentioned BBU will come from described core net is transmitted to described WLAN terminal, and to finish described core net to the authentication of described WLAN terminal, comprising: described BBU obtains the authentication parameter of described WLAN terminal from described authentication response message; Described BBU is packaged into the message of the authentication message format of wireless cellular network with described authentication parameter, and the message of encapsulation is sent to described equipment of the core network; When the authentication parameter of the definite described authentication parameter that receives of described core net and its preservation was consistent, described BBU sent the message of authentication success to described WLAN terminal.
Above-mentioned BBU sets up the passage of the described core net of described WLAN terminal access, so that after the described core net of described WLAN terminal access, also comprise: described BBU detects the state of the described core net of described WLAN terminal access; If detect described WLAN terminal when being in the state of not visiting described core net, described BBU interrupts the passage of the described core net of described WLAN terminal access.
According to a further aspect in the invention, the method that provides another WLAN and wireless cellular network to merge, comprise: after the WLAN terminal of the core net of determining the visit wireless cellular network was passed through authentication, the authentication information of the described WLAN terminal that baseband processing unit BBU will receive was transmitted to the authenticating device of wireless cellular network; After the authentication of described authentication information by described authenticating device, described BBU sets up the passage of the described core net of described WLAN terminal access, makes the described core net of described WLAN terminal access.
The authentication information of described WLAN terminal is sent to before the gateway device of wireless cellular network, and also comprise: BBU determines that WLAN access point AP by the authentication of described BBU, makes described BBU manage described WLANAP.
The authentication information of described WLAN terminal is transmitted to the gateway device of wireless cellular network, and comprising: described BBU obtains the authentication information of described WLAN terminal; Described BBU sends to WLAN authentication and authorization charging aaa server with the authentication information that obtains, and by described WLAN aaa server described authentication information is authenticated.
Above-mentioned BBU sets up the passage of the described core net of described WLAN terminal access, so that after the described core net of described WLAN terminal access, also comprise: described BBU sends charging request message to the WLAN aaa server; Receiving after described WLAN aaa server responds the message of described charging request message, described BBU sends to described WLAN aaa server every predetermined period with the charge information of described WLAN terminal, by described WLAN aaa server described WLAN terminal is chargeed.
Above-mentioned BBU sets up the passage of the described core net of described WLAN terminal access, so that after the described core net of described WLAN terminal access, also comprise: BBU checks whether described WLAN terminal is in the state of the described core net of visit; If check out when described WLAN terminal is in the state of not visiting described core net, described BBU interrupts the passage for the described core net of described WLAN terminal access of described WLAN terminal foundation.
According to a further aspect of the invention, the device that provides a kind of WLAN and wireless cellular network to merge, be arranged in the baseband processing unit BBU of wireless cellular network, comprise: first sending module, the authentication request information that is used for coming from the WLAN terminal is transmitted to the core net of wireless cellular network; Second sending module is transmitted to described WLAN terminal for the Authentication Response information that will come from described core net, finishes described core net to the authentication of described WLAN terminal; First sets up module, is used for setting up the passage of the described core net of described WLAN terminal access after authentication is passed through, and makes the described core net of described WLAN terminal access.
According to a further aspect of the invention, the device that provides another kind of WLAN and wireless cellular network to merge, be arranged in the baseband processing unit BBU of wireless cellular network, comprise: the baseband processing unit (BBU) that is arranged in wireless cellular network, comprise: the 3rd sending module, be used for WLAN terminal in the core net of determining the visit wireless cellular network through authentication after, the authentication information of the described WLAN terminal that receives is transmitted to the authenticating device of wireless cellular network; Second sets up module, is used for setting up the passage of the described core net of described WLAN terminal access after the authentication of described authentication information by described authenticating device, makes the described core net of described WLAN terminal access.
By the present invention, utilize the mutual message of BBU transfer WLAN terminal in the wireless cellular network and core net or gateway device to authorize the technological means that inserts to finish, solved in the correlation technique, WLAN and Cellular Networks only are that local the fusion merged fully, and WLAN and the more high technical problem of Cellular Networks integration program cost, and then reached the effect that merges and reduce by two fusion costs between the network fully of WLAN and Cellular Networks.
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 for explaining the present invention, do not constitute improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation according to the integration program 1 of the WLAN of correlation technique and Cellular Networks;
Fig. 2 is the structural representation according to the integration program 2 of the WLAN of correlation technique and Cellular Networks;
Fig. 3 is the method flow diagram according to the WLAN of the embodiment of the invention 1 and wireless cellular network fusion;
Fig. 4 is the schematic network structure according to the WLAN of the embodiment of the invention 1 and wireless cellular network fusion;
Fig. 5 is the structured flowchart according to the device of the WLAN of the embodiment of the invention 1 and wireless cellular network fusion;
Fig. 6 is the schematic flow sheet according to the method for the WLAN of the embodiment of the invention 2 and wireless cellular network fusion;
Fig. 7 is the method flow diagram according to the WLAN of the embodiment of the invention 3 and wireless cellular network fusion;
Fig. 8 is the schematic network structure according to the WLAN of the embodiment of the invention 3 and wireless cellular network fusion;
Fig. 9 is the structured flowchart according to the device of the WLAN of the embodiment of the invention 3 and wireless cellular network fusion;
Figure 10 is the schematic flow sheet according to the method for the WLAN of the embodiment of the invention 4 and wireless cellular network fusion.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
In following each embodiment, communication can realize that the present invention does not do restriction to this by wireless connections or wired connection or its both combination.
Embodiment 1
Fig. 3 is the method flow diagram according to the WLAN of the embodiment of the invention 1 and wireless cellular network fusion.As shown in Figure 3, this method comprises:
The authentication request information that step S302, the baseband processing unit BBU of wireless cellular network will come from the WLAN terminal is transmitted to the core net of wireless cellular network;
The Authentication Response information that step S304, BBU will come from described core net is transmitted to described WLAN terminal, to finish described core net to the authentication of described WLAN terminal;
Step S306, after authentication was passed through, described BBU set up the passage of the described core net of described WLAN terminal access, so that the described core net of described WLAN terminal access.
By above-mentioned processing procedure, owing to utilized the BBU of wireless cellular network to finish core net to the authentication of WLAN terminal and after authentication is passed through, make the WLAN terminal can visit the technological means of described core net, namely in WLAN and Cellular Networks fusion process, utilized the network element device of Cellular Networks, therefore, realized the degree of depth fusion of WLAN and Cellular Networks.In addition, owing to need not increase extra equipment, also reduced the fusion cost with respect to integration program of the prior art.
As can be seen, what BBU mainly finished is the conversion of two authorizing procedures from step S302 and step S304, and one is the authentication of WLAN, and one is the authentication of Cellular Networks.Be BBU in authentication process, play the effect of a terminal, particularly: in the authentication process, BBU is responsible for gathering the authentication information of WLAN terminal (User Equipment abbreviates UE as), the envelope change into Cellular Networks authentication message format, be sent to core net; The authentication message that core net issues, the BBU information extraction, envelope changes into the EAP-SIM/AKA message and sends to WLAN UE.
Above-mentioned steps S306 can adopt following processing procedure to realize when concrete the application: after access is finished (authentication is passed through the back), BBU is the transfer message between WLAN UE and 3G core net.What transmit between WLAN UE and the WLANAP is 802.11 messages; WLAN AP changes into 802.3 message formats with 802.11 and reaches BBU; BBU extracts payload, and behind the encapsulation 2G/3G heading, is sent to core net.
The WLAN AP of the described BBU of configuration manages be transmitted to the core net of wireless cellular network at the authentication information that BBU will come from the WLAN terminal before: namely after BBU determines the authentication of WLAN AP by described BBU, BBU can manage (for example edition upgrading etc.) to described WLAN AP.When concrete the application, WLAN AP can specifically comprise following feature in fusion process: directly be connected with BBU by netting twine, WLANAP is responsible for providing the WLAN wireless access.From above-mentioned processing procedure as can be seen, BBU can manage WLANAP, comprises functions such as the authentication of AP and edition upgradings, has simulated the function of WLAN access control (Access Controller abbreviates AC as) to a certain extent.
In a preferred implementation process of the present invention, the authentication request information that above-mentioned BBU will come from the WLAN terminal is transmitted to the core net of wireless cellular network, can realize by following processing procedure: BBU gathers the authentication request information of WLAN terminal, wherein, described authentication request information comprises: the identification information of described WLAN terminal; BBU is packaged into the message of the authentication message format of wireless cellular network with described identification information, and the message of encapsulation is sent to described equipment of the core network, to initiate authentication request.
In above-mentioned authentication process, above-mentioned steps S304 is that the Authentication Response information that BBU will come from described core net is transmitted to described WLAN terminal, to finish described core net to the authentication of described WLAN terminal, can realize by following processing procedure: BBU obtains the authentication parameter of described WLAN terminal from described authentication response message; Described BBU is packaged into the message of the authentication message format of wireless cellular network with described authentication parameter, and the message of encapsulation is sent to described equipment of the core network; When the authentication parameter of the definite described authentication parameter that receives of core net and its preservation was consistent, described BBU sent the message of authentication success to described WLAN terminal.
Waste for fear of the operation resource, be the passage that described WLAN terminal is set up the described core net of described WLAN terminal access at BBU, so that after the described core net of described WLAN terminal access, can also following processing procedure: BBU detect the state of the described core net of described WLAN terminal access; If detect described WLAN terminal when being in the state of not visiting described core net, described BBU interrupts the passage of the described core net of described WLAN terminal access.Above-mentioned processing procedure can show as following processing procedure when concrete the application: hang up that Wifi connects or BBU detects wifi and connects when interrupting as WLAN UE, BBU need be hung up the passage into its foundation.By above-mentioned processing procedure, owing to can monitor the state of the described core net of WLAN terminal access in real time, therefore, avoided when WLAN UE does not visit Cellular Networks the wasting of resources that the network element of Cellular Networks (for example BBU) equipment runs without interruption and causes.
From above-described embodiment as can be seen, above-mentioned integration program has mainly carried out improving (referring to Fig. 4) to the function of Cellular Networks BBU on hardware, owing to do not increase extras, only needs upgrade software to get final product, and has therefore reduced the fusion cost.
The device that also provides a kind of WLAN and wireless cellular network to merge in the present embodiment, this device is arranged in the BBU of wireless cellular network, this device is used for realizing above-described embodiment and preferred implementation, has carried out repeating no more of explanation, describes relating to module in this device below.As used below, the combination of software and/or the hardware of predetermined function can be realized in term " module ".Although the described device of following examples is preferably realized with software, hardware, perhaps the realization of the combination of software and hardware also may and be conceived.Fig. 5 is the structured flowchart according to the device of the WLAN of the embodiment of the invention 1 and wireless cellular network fusion.Need to prove that the core net in the present embodiment can be understood as equipment of the core network.As shown in Figure 5, this device comprises:
First sending module 50 links to each other with core net (equipment), is transmitted to the core net (equipment) of wireless cellular network for the authentication request information that will come from the WLAN terminal;
Second sending module 52 links to each other with core net (equipment), is transmitted to described WLAN terminal for the Authentication Response information that will come from described core net, to finish described core net to the authentication of described WLAN terminal;
First sets up module 54, links to each other with core net (equipment), is used for setting up the passage of the described core net of described WLAN terminal access, so that the described core net of described WLAN terminal access after authentication is passed through.
Embodiment 2
Present embodiment can be used as a preferred embodiment of above-described embodiment 1.In the present embodiment, at Access Layer, WLAN AP and BBU (Base BandUnit) directly merge, and WLANAP can be built into BBU inside, also can adopt general WLAN AP, directly is connected into BBU by network interface.Make progress from Access Layer, each network element and the transmission system of complete multiplexing existing Cellular Networks, it is very low therefore to merge cost.
BBU is in fusion process in the present embodiment, except traditional wireless base station function is provided, also needs to finish following function:
1, an integrated functional module that is similar to WLAN Access Controller realizes functions such as the keep-alive between access authentication, edition upgrading, WLAN UE and the BBU of WLAN AP and dhcp address distribution.
2, WLAN UE inserts in the authentication process of cellular network, BBU plays a terminal, the authorizing procedure that transmits between BBU and the WLAN UE is EAP-SIM/AKA, and what transmit between BBU and the core net is corresponding 2G/3G/4G authorizing procedure, BBU gathers the information that needs in two authentication processes, be packaged into the message of corresponding flow process, send to WLAN UE or core net.
3, finish authentication after, BBU is for UE initiation packet exchange (Packet Switch abbreviates PS as) territory packet data protocol (Packet Data Protocol abbreviates PDP as) activation process, after WLAN UE was hung up the WLAN connection, BBU was hung up corresponding Cellular Networks and is connected.
When 4, WLAN UE surfed the Net, BBU was responsible for transfer message between AP and core net, sealed the mutual conversion of changeing form.
In the present embodiment, general WLANAP inserts BBU by network interface, but WLANAP adopts other modes to connect BBU, and perhaps WLANAP directly implants BBU inside as a functional module, does not influence following function and flow process.
Below use TD-SCDMA to describe as example with wireless cellular network, adopt names such as GGSN, SGSN as equipment of the core network, but function and the flow process described are suitable for all to all wireless cellular network standards (including but not limited to TDS-CDMA, GSM, Wimax, UMTS, CDMA, LTE).
As shown in Figure 6, the specific implementation process of the fusion method of present embodiment is as follows:
Step S602, BBU finish the authentication to AP, between adopt CAPWAP agreement (control and provisioning of wireless access points).
Step S604, WLAN UE is linked on the WLANAP.
Step S606, UE initiates beginning message (EAPoL-Start) to WLAN, initiates authentication request.
Step S608, BBU send request/identification message EAP-Request/Identity message to WLAN UE, and request UE replys its IMSI information.
Step S610, WLAN UE replys response/identity message (EAP-Response/Identity), sends its User Identity information, contains IMSI information in the identification information.
Step S612, BBU extracts IMSI information, initiates analog call, and this wherein simulates the flow process of 3G UE, and need be packaged into the form of corresponding 3G message.
Step S614, SGSN asks authentication vector to HLR.
Step S616, HLR replys authentication vector.
Step S618, SGSN starts authentication process, sends RAND, information such as AUTH to BBU.
Step S620, BBU need grasp the authentication information of the correspondence that SGSN sends, and are configured to EAP-Request/AKA challenge and send to UE.(this process need notices that when normal 3G called out, to the authentication message that SGSN sends, BBU was transparent to UE, can not grasp and handle.)
Step S622, WLAN UE are according to the parameter in the EAP request message, according to the algorithm of 3G, can authenticate network, after network authentication passes through, calculate parameters such as RES, structure EAP-Response/AKA challenge returns back to BBU, wherein carries parameters such as RES.
Step S624, BBU extracts authentication parameter, and the authentication startup of service universal packet wireless business affair support node (Serving General packet radio service support node abbreviates SGSN as) is responded.
Step S626, SGSN is RES and XRES relatively, if both equate that then authentication is passed through, this moment, SGSN replied the message of authentication success to BBU.
Step S628, BBU band WLAN UE activates PDP Context.
Step S630, BBU reply the message (EAP-Success) of authentication success for WLAN UE.
Step S632, BBU is responsible for to WLAN UE distributing IP address.Just can communicate by letter normally afterwards, in the communication process, WLAN AP finishes the conversion of 802.11 message formats and 802.3 message formats.BBU extracts the payload in 802.3 messages, is packaged into the 3G message format and sends.
Whether step S634 in the communication process, carries out the keep-alive flow process of EAP-SIM/AKA, detect WLAN UE inserting always.
In order to increase the flexibility of above-mentioned integration program, also can utilize network elements such as the BBU of Cellular Networks and gateway device to realize the fusion of above-mentioned WLAN and Cellular Networks.Below describe in detail with embodiment 3 and embodiment 4.
Embodiment 3
Fig. 7 is the method flow diagram according to the WLAN of the embodiment of the invention 3 and wireless cellular network fusion.As shown in Figure 7, this method comprises:
Step S702, after the WLAN terminal of the core net of determining the visit wireless cellular network was passed through authentication, the authentication information of the described WLAN terminal that baseband processing unit BBU will receive was transmitted to the gateway device of wireless cellular network;
Step S704, after the authentication of described authentication information by described gateway device, described BBU sets up the passage of the described core net of described WLAN terminal access, so that the described core net of described WLAN terminal access.
Because above-mentioned fusion process has been used the network element (for example BBU and gateway device) in the Cellular Networks, therefore, above-mentioned fusion process has been deep into Cellular Networks inside, makes two networks realize degree of depth fusion, and owing to do not need to upgrade hardware device, saved the fusion cost.
With similar among the embodiment 1, the WLAN AP of the described BBU of configuration manages be transmitted to the core net of wireless cellular network at the authentication information that BBU will come from the WLAN terminal before: namely after BBU determines the authentication of WLAN AP by described BBU, BBU can manage (for example edition upgrading etc.) to described WLANAP.
From step S702 and step S704 as can be seen, BBU is in verification process, play the effect of a terminal, can adopt multiple mode the authentication information of described WLAN terminal to be transmitted to the gateway device of wireless cellular network, for example directly be transmitted to the WLANAAA server, can realize by following processing procedure: described BBU obtains the authentication information of described WLAN terminal; BBU sends to WLAN authentication and authorization charging aaa server with the authentication information that obtains, and by the WLAN aaa server described authentication information is authenticated.Network configuration in conjunction with WLAN shown in Figure 8 and wireless cellular network fusion, above-mentioned processing procedure can show as the authentication information that following processing procedure: BBU will comprise username and password and send to Network Management Equipment by the OMCB passage when concrete the application, message is the message of Radius form, after Network Management Equipment is received the Radius message, authentication information is forwarded to the LAN aaa server, the LAN aaa server authenticates username and password, if authentication is passed through, then send the message of authentication success to webmaster, webmaster sends to BBU with the message of authentication success by the OMCB passage, and this moment, BBU knew that WLAN UE is by success identity.
In order to reduce the WLAN business online cost of radio honeycomb that is added to, set up the passage of the described core net of described WLAN terminal access at BBU, so that after the described core net of described WLAN terminal access, can also send charging request message to the WLAN aaa server by following processing procedure: BBU; Receiving after described WLAN aaa server responds the message of described charging request message, described BBU sends to described WLANAAA server every predetermined period with the charge information of described WLAN terminal, by described WLAN aaa server described WLAN terminal is chargeed.In above-mentioned processing procedure, by the WLAN aaa server in the wireless cellular network WLAN terminal of visit core net is chargeed, thereby reduced the WLAN business online cost of radio honeycomb that is added to, above-mentioned processing procedure can show as following processing procedure when concrete the application: for charging flow, BBU initiates to charge beginning message to the WLAN aaa server, the response of WLAN aaa server is chargeed after the beginning message, BBU regularly with the charge information of WLAN terminal (for example, flow, information such as duration) send to the WLAN aaa server, in real time the WLAN terminal of visit core net is chargeed with realization.
Waste for fear of the operation resource, be the passage that described WLAN terminal is set up the described core net of described WLAN terminal access at BBU, so that after the described core net of described WLAN terminal access, can also check whether described WLAN terminal is in the state of the described core net of visit by following processing procedure: BBU; If check out when described WLAN terminal is in the state of not visiting described core net, described BBU interrupts the passage for the described core net of described WLAN terminal access of described WLAN terminal foundation.Above-mentioned processing procedure can show as following processing procedure when concrete the application: hang up that Wifi connects or BBU detects wifi and connects when interrupting as WLAN UE, BBU need be hung up the passage into its foundation.By above-mentioned processing procedure, owing to can monitor the state of the described core net of WLAN terminal access in real time, therefore, to have avoided when WLAN UE does not visit Cellular Networks, the network element of Cellular Networks (for example BBU) equipment is paid no attention to the wasting of resources that disconnected operation causes.
The device that also provides a kind of WLAN and wireless cellular network to merge in the present embodiment, this device is arranged in the BBU of wireless cellular network, this device is used for realizing above-described embodiment and preferred implementation, has carried out repeating no more of explanation, describes relating to module in this device below.As used below, the combination of software and/or the hardware of predetermined function can be realized in term " module ".Although the described device of following examples is preferably realized with software, hardware, perhaps the realization of the combination of software and hardware also may and be conceived.Fig. 9 is the structured flowchart according to the device of the WLAN of the embodiment of the invention 3 and wireless cellular network fusion.Need to prove that the core net in the present embodiment can be understood as equipment of the core network.As shown in Figure 9, this device comprises:
The 3rd sending module 90 links to each other with authenticating device 94, be used for WLAN terminal in the core net of determining the visit wireless cellular network through authentication after, the authentication information of the described WLAN terminal that receives is transmitted to the authenticating device 94 of wireless cellular network;
Second sets up module 92, links to each other with authenticating device 94, is used for setting up the passage of the described core net of described WLAN terminal access after the authentication of described authentication information by described authenticating device 94, makes the described core net of described WLAN terminal access.
Embodiment 4
Present embodiment can be used as a preferred embodiment of above-described embodiment 3.In the present embodiment, at Access Layer, WLAN AP and BBU (Base BandUnit) directly merge, and WLANAP can be built into BBU inside, also can adopt general WLAN AP, directly is connected into BBU by network interface.Make progress from Access Layer, each network element and the transmission system of complete multiplexing existing Cellular Networks, it is very low therefore to merge cost.
BBU is in fusion process in the present embodiment, except traditional wireless base station function is provided, also needs to finish following function:
1, an integrated functional module that is similar to WLAN Access Controller; realization is to functions such as the keep-alive between access authentication, edition upgrading, WLAN UE and the BBU of WLAN AP and DHCP (Dynamic Host Configure Protocol abbreviates DHCP as) address assignment.
2, the functional module of similar Portal server when user access network does not pass through authentication, forces to push the portal certification page to WLAN UE.
3, the functional module of artificial antenna cellular call.
In the present embodiment, general WLANAP inserts BBU by network interface, but WLANAP adopts other modes to connect BBU, and perhaps WLANAP directly implants BBU inside as a functional module, does not influence following function and flow process.
Below use TD-SCDMA to describe as example with wireless cellular network, adopt names such as GGSN, SGSN as equipment of the core network, but function and the flow process described are suitable for all to all wireless cellular network standards (including but not limited to TDS-CDMA, GSM, Wimax, UMTS, CDMA, LTE).
As shown in figure 10, the specific implementation process of the fusion method of present embodiment is as follows:
Step S1002, BBU finish the authentication to AP, between adopt the CAPWAP agreement.
Step S1004, WLAN UE is linked on the WLANAP.
Step S1006, BBU are WLAN UE distributing IP address.
Step S1008, WLAN UE send the online request.
Step S1010 if BBU finds this WLAN UE not through authentication, then forces to push the portal certification page to WLAN UE.
Step S1012, WLAN UE use the good user name password of application in advance, and the user name password is inserted the portal page, send to BBU.
Step S1014, BBU sends to gateway device with username and password by the OMCB passage, and message is the Radius message.
After step S1016, Network Management Equipment receive the Radius message, be forwarded to WLANAAA Server (server).
Step S1018, the username and password of WLAN AAA Server authenticates, if authentication is passed through, then sends the message of authentication success to webmaster.
Step S1020, webmaster sends to BBU with the message of authentication success by the OMCB passage.
Step S1022, this moment, BBU knew WLAN UE by success identity, and WLAN UE initiates an analog call for this reason, and use a false SIM information, the purpose of analog call this moment is that WLAN UE sets up a PS territory passage for this reason.
Step S1024, after the analog call success, BBU sends authentication result to WLAN UE, and this moment, WLAN UE just can pass through the Cellular Networks accesses network.
Step S1026, for charging flow, BBU initiates to charge beginning message to AAA, and AAA responds the beginning message of chargeing, and BBU regularly sends to AAA with charge information (flow, duration etc.) afterwards.For WLAN UE online, BBU need carry out the conversion of corresponding message format, extracts the come payload of message of AP, is packaged into the Cellular Networks message format, and mutual between the core net.
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 elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, 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.Especially be not limited to the standard of various mobile cellular nets.
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 doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. the method that merges of a WLAN (wireless local area network) WLAN and wireless cellular network is characterized in that, comprising:
The authentication request information that the baseband processing unit BBU of wireless cellular network will come from the WLAN terminal is transmitted to the core net of wireless cellular network;
The Authentication Response information that described BBU will come from described core net is transmitted to described WLAN terminal, finishes described core net to the authentication of described WLAN terminal;
After authentication was passed through, described BBU set up the passage of the described core net of described WLAN terminal access, made the described core net of described WLAN terminal access.
2. method according to claim 1 is characterized in that, the authentication information that described BBU will come from the WLAN terminal is transmitted to before the core net of wireless cellular network, also comprises:
Described BBU determines WLAN access point AP by the authentication of described BBU, so that described BBU manages described WLANAP.
3. method according to claim 1 is characterized in that, the authentication request information that described BBU will come from the WLAN terminal is transmitted to the core net of wireless cellular network, comprising:
Described BBU gathers the authentication request information of described WLAN terminal, and wherein, described authentication request information comprises:
The identification information of described WLAN terminal;
Described BBU is packaged into the message of the authentication message format of wireless cellular network with described IMSI information, and the message of encapsulation is sent to described equipment of the core network, to initiate authentication request.
4. method according to claim 1 is characterized in that, the Authentication Response information that described BBU will come from described core net is transmitted to described WLAN terminal, to finish described core net to the authentication of described WLAN terminal, comprising:
Described BBU obtains the authentication parameter of described WLAN terminal from described authentication response message;
Described BBU is packaged into the message of the authentication message format of wireless cellular network with described authentication parameter, and the message of encapsulation is sent to described equipment of the core network;
When the authentication parameter of the definite described authentication parameter that receives of described core net and its preservation was consistent, described BBU sent the message of authentication success to described WLAN terminal.
5. method according to claim 1 is characterized in that, described BBU sets up the passage of the described core net of described WLAN terminal access, so that after the described core net of described WLAN terminal access, also comprise:
Described BBU detects the state of the described core net of described WLAN terminal access;
If detect described WLAN terminal when being in the state of not visiting described core net, described BBU interrupts the passage of the described core net of described WLAN terminal access.
6. the method that merges of a WLAN (wireless local area network) WLAN and wireless cellular network is characterized in that, comprising:
After the WLAN terminal of the core net of determining the visit wireless cellular network was passed through authentication, the authentication information of the described WLAN terminal that baseband processing unit BBU will receive was transmitted to the authenticating device of wireless cellular network;
After the authentication of described authentication information by described authenticating device, described BBU sets up the passage of the described core net of described WLAN terminal access, so that the described core net of described WLAN terminal access.
7. method according to claim 6 is characterized in that, the authentication information of described WLAN terminal is sent to before the gateway device of wireless cellular network, also comprises:
Described BBU determines that WLAN access point AP by the authentication of described BBU, makes described BBU manage described WLANAP.
8. method according to claim 6 is characterized in that, the authentication information of described WLAN terminal is transmitted to the gateway device of wireless cellular network, comprising:
Described BBU obtains the authentication information of described WLAN terminal;
Described BBU sends to WLAN authentication and authorization charging aaa server with the authentication information that obtains, and by described WLAN aaa server described authentication information is authenticated.
9. method according to claim 6 is characterized in that, described BBU sets up the passage of the described core net of described WLAN terminal access, so that after the described core net of described WLAN terminal access, also comprise:
Described BBU sends charging request message to the WLAN aaa server;
Receiving after described WLANAAA server responds the message of described charging request message, described BBU sends to described WLAN aaa server every predetermined period with the charge information of described WLAN terminal, by described WLAN aaa server described WLAN terminal is chargeed.
10. method according to claim 6 is characterized in that, described BBU sets up the passage of the described core net of described WLAN terminal access, so that after the described core net of described WLAN terminal access, also comprise:
Described BBU checks whether described WLAN terminal is in the state of the described core net of visit;
If check out when described WLAN terminal is in the state of not visiting described core net, described BBU interrupts the passage for the described core net of described WLAN terminal access of described WLAN terminal foundation.
11. the device that a WLAN (wireless local area network) WLAN and wireless cellular network merge is arranged in the baseband processing unit BBU of wireless cellular network, it is characterized in that, comprising:
First sending module, the authentication request information that is used for coming from the WLAN terminal is transmitted to the core net of wireless cellular network;
Second sending module is transmitted to described WLAN terminal for the Authentication Response information that will come from described core net, finishes described core net to the authentication of described WLAN terminal;
First sets up module, is used for setting up the passage of the described core net of described WLAN terminal access after authentication is passed through, and makes the described core net of described WLAN terminal access.
12. the device that a WLAN (wireless local area network) WLAN and wireless cellular network merge is arranged in the baseband processing unit BBU of wireless cellular network, it is characterized in that, comprising:
The 3rd sending module, be used for WLAN terminal in the core net of determining the visit wireless cellular network through authentication after, the authentication information of the described WLAN terminal that receives is transmitted to the authenticating device of wireless cellular network;
Second sets up module, is used for setting up the passage of the described core net of described WLAN terminal access after the authentication of described authentication information by described authenticating device, makes the described core net of described WLAN terminal access.
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