CN1274109C - Interactive method for reselecting operation network for radio local net user terminal - Google Patents
Interactive method for reselecting operation network for radio local net user terminal Download PDFInfo
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Abstract
The present invention discloses an interactive method for reselecting operating networks by wireless local area network (WLAN) user terminals. The method comprises the steps that (a) when a WLAN user terminal which is coupled in a mobile communication operating network needs to make a selection again to be coupled in another mobile communication, a request for disconnection is transmitted to a WLAN access network by the WLAN user terminal; (b) after the request for disconnection is received by the WLAN access network, the connection between the WLAN user terminal and the current mobile communication operating network is broken; (c) the information of the mobile communication operating network to be coupled in by the WLAN user terminal is used as network selecting information and is transmitted to the WLAN access network in a user identifying message, and the WLAN user terminal is coupled in the reselected mobile communication operating network after authentication and certification. The method has the advantage that after a user terminal is coupled in a mobile communication operating network, the user terminal can make a selection again to be coupled in another mobile communication operating network.
Description
Technical field
The present invention relates to Operation Network and select access technology, be meant that especially a kind of wireless lan (wlan) user terminal reselects the exchange method of Operation Network.
Background technology
Because the user is more and more higher to the requirement of wireless access rate, WLAN (wireless local area network) (WLAN, WirelessLocal Area Network) is arisen at the historic moment, and it can provide wireless data access at a high speed in more among a small circle.WLAN (wireless local area network) comprises multiple different technologies, a widely used technical standard is IEEE802.11b at present, it adopts the 2.4GHz frequency range, the maximum data transmission rate can reach 11Mbps, use the IEEE 802.11g and bluetooth (Bluetooth) technology in addition of this frequency range, wherein, 802.11g the maximum data transmission rate can reach 54Mbps.Other new technology such as IEEE 802.11a and ETSI BRAN Hiperlan2 use the 5GHz frequency range, and maximum transmission rate also can reach 54Mbps.
Although multiple different wireless access technology is arranged, most of WLAN is used for transmitting internet agreement (IP) packet data package.For a Wireless IP network, its concrete WLAN access technology that adopts generally is transparent for the IP on upper strata.Its basic structure all is to utilize access point (AP) to finish the wireless access of user terminal, connects to form the IP transmission network by network control and connection device.
Rise and development along with the WLAN technology, WLAN and various wireless mobile communication network, such as: the intercommunication of GSM, code division multiple access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) (WCDMA) system, time division duplex-S-CDMA (TD-SCDMA) system, CDMA2000 system is just becoming the emphasis of current research.In third generation partner program (3GPP) standardization body, user terminal can link to each other with internet (Internet), Intranet (Intranet) by the access network of WLAN, can also be connected with the home network of 3GPP system or the accesses network of 3GPP system via the WLAN access network, specifically be exactly, when the WLAN user terminal inserts in this locality, via WLAN access network and 3GPP home network, promptly belong to public land mobile net network (HPLMN) and link to each other, as shown in Figure 2; When roaming, via WLAN access network and 3GPP accesses network, promptly visiting public land mobile net network (VPLMN) links to each other, part entity in the 3GPP accesses network respectively with the 3GPP home network in corresponding entity interconnection, such as 3GPP authentication and authorization charging (AAA) agency in the 3GPP accesses network and 3GPP authentication and authorization charging (AAA) server in the 3GPP home network; WLAN (wireless local area network) in the 3GPP accesses network inserts packet data gateway (PDG, PacketData Gateway) in critical point (WAG) and the 3GPP home network or the like, as shown in Figure 1.Wherein, Fig. 1, Fig. 2 are respectively under the roaming condition and the networking structure schematic diagram of wlan system and the intercommunication of 3GPP system under the non-roaming situation.
Referring to Fig. 1, shown in Figure 2, in the 3GPP system, mainly comprise home signature user server (HSS)/attaching position register (HLR), 3GPP aaa server, 3GPP AAA agency, WAG, packet data gateway, charging critical point (CGw)/charging information collecting system (CCF) and Online Charging System (OCS).All entities of user terminal, WLAN access network and 3GPP system have constituted the 3GPP-WLAN Internet jointly, and this 3GPP-WLAN Internet can be used as a kind of LAN service system.Wherein, the 3GPP aaa server is responsible for authentication, mandate and the charging to the user, and the charging information collecting that the WLAN access network is sent here also sends charge system to; Packet data gateway is responsible for the transfer of data from the WLAN access network to 3GPP network or other packet networks with user data; Charge system mainly receives and writes down the customer charging information that network transmits, and comprises that also OCS transmits online cost information according to online charging user's expense situation indication network is periodic, and adds up and control.
Under non-roaming situation, when the WLAN user terminal wishes directly to insert Internet/Intranet, after user terminal was finished the access authentication mandate by WLAN Access Network and aaa server (AS), user terminal can be linked into Internet/Intranet by the WLAN Access Network.If the WLAN user terminal also wishes to insert 3GPP packet switching (PS) territory business, then can be further to the business of 3GPP home network application intercommunication scene 3 (Scenario3), that is: the WLAN user terminal is initiated the service authorization request of intercommunication scene 3 to the AS of 3GPP home network, the AS of 3GPP home network carries out service authentication and mandate to this service authorization request, if success, then AS sends access grant message to user terminal, and AS distributes corresponding PDG to user terminal, after setting up the tunnel between user terminal and the PDG that distributed, can insert 3GPPPS territory business.Simultaneously, CGw/CCF and OCS are according to the network operating position recording gauge charge information of user terminal.Under roaming condition, when the WLAN user terminal wished directly to insert Internet/Intranet, user terminal can be linked into Internet/Intranet to the application of 3GPP home network by the 3GPP accesses network.If user terminal also wishes to apply for intercommunication scene 3 business, be linked into 3GPP PS territory business, then user terminal need be initiated the service authorization process to the 3GPP home network by the 3GPP accesses network, this process is carried out between the AS of user terminal and 3GPP home network equally, after authorizing successfully, AS distributes corresponding ownership PDG to user terminal, after setting up the tunnel between the PDG of user terminal by WAG in the 3GPP accesses network and distribution, user terminal gets final product the 3GPP PS territory business of access belonging network.
In the 3GPP-WLAN intercommunication network, if WLAN simultaneously with a plurality of 3GPP accesses network, promptly link to each other, so with a plurality of mobile communication operators nets, the WLAN user terminal selects suitable mobile communication operators net to insert as required can two kinds of implementations, respectively as shown in Figure 3, Figure 4.Wherein, Fig. 3 directly selects the handling process of the mobile communication operators net success that will insert for user terminal, comprising:
After step 301～303:WLAN user terminal and WLAN Access Network were set up wireless connections, network or WLAN user terminal were initiated access authentication procedure, and the WLAN Access Network sends the request user identification message to this WLAN user terminal; After this WLAN user terminal is received request message, return the user ID response message that carries network selecting information to the WLAN Access Network.Here, network selecting information is meant the current mobile communication operators net information that links to each other with wlan network that will insert of user terminal; Access authentication procedure between WLAN Access Network and the user terminal is Extensible Authentication Protocol (EAP) process.Usually, network selecting information is positioned in the user identification field with network access Identifier (NAI) formal definition.
After step 304～306:WLAN Access Network is received the message that user terminal sends, judge whether the network selecting information in the message belongs to the mobile communication operators net that current WLAN connects, if be confirmed to be, then the WLAN Access Network will be determined the 3GPP AAA agency or the 3GPP aaa server of the selected mobile communication operators net of user terminal according to NAI, send user ID and access authentication authorization requests to determined 3GPP AAA agency or 3GPP aaa server then, allow 3GPP AAA agency or 3GPP aaa server that the user terminal of current access is carried out authentication, if authentication is passed through, just finish follow-up access.
The mobile communication operators net failure that Fig. 4 will insert for the first selection of user terminal, the handling process according to the network selecting information that issues is selected once more comprises:
Step 401～403: identical with step 301～303.
After step 404～405:WLAN Access Network is received the message that user terminal sends, the network selecting information in the message of finding does not belong to the mobile communication operators net that current WLAN connects, and then issues the network notice signaling that contains all mobile communication operators net information that self connect to this user terminal.
Step 406～407: after user terminal is received, reselect the mobile communication operators net that will insert, send the user ID response message that carries new network selecting information to the WLAN Access Network then according to the mobile communication operators net information in the notice signaling.
Step 408～409: identical with step 305～306.
From such scheme as can be seen, in the 3GPP-WLAN intercommunication network, the flow process that has had comparatively perfect user terminal selecting access network, but, when certain WLAN Access Network connects a plurality of VPLMN networks simultaneously, and certain user terminal inserts after one of them VPLMN network by this WLAN Access Network, this user terminal for various reasons, such as: the rate reason, access service scope reason or the like, need to disconnect the VPLMN network of current connection, when reselecting another VPLMN network of this WLAN Access Network connection, also nobody proposes concrete solution at present.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of wireless local network user terminal to reselect the exchange method of Operation Network, makes user terminal after inserting a mobile communication operators net, can reselect another mobile communication operators net and insert.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of WLAN (wireless local area network) WLAN user terminal is reselected the exchange method of Operation Network, and this method may further comprise the steps:
A. the WLAN user terminal that has inserted a mobile communication operators net need be reselected when inserting another with mobile communication operators network that the WLAN Access Network is connected, and described WLAN user terminal is to WLAN Access Network transmission disconnection connection request;
After the b.WLAN Access Network is received and disconnected connection request, disconnect between described WLAN user terminal and its current mobile communication operators network that is connected and connecting;
The c.WLAN user terminal will be reselected the information of another mobile communication operators net of access as network selecting information, be carried on and send to the WLAN Access Network in the user ID response message, through inserting another mobile communication operators network of reselecting behind the authentication.
Such scheme further can be divided into four kinds of situations:
First kind of situation, the described WLAN user terminal of step a to the disconnection connection request that the WLAN Access Network sends is: include and disconnect the disconnection connection request that indication was indicated and need be inserted again to WLAN user terminal and the current mobile communication operators net that is connected;
Then among the step b, the WLAN Access Network sends the disconnection connection response that contains the indication of request user ID or directly sends the indication of request user ID to the WLAN user terminal to the WLAN user terminal after disconnecting connection between described WLAN user terminal and its current mobile communication operators network that is connected; After the WLAN user terminal is received and is disconnected connection response or the indication of request user ID, execution in step c.
Second kind of situation, the described WLAN user terminal of step a to the disconnection connection request that the WLAN Access Network sends is: carry and disconnect the disconnection connection request that WLAN user terminal and the current mobile communication operators net that is connected are indicated;
Then among the step b, after the WLAN Access Network disconnects connection between described WLAN user terminal and its current mobile communication operators network that is connected, send to the WLAN user terminal and to disconnect connection response; After the WLAN user terminal is received and is disconnected connection response, execution in step c.
The third situation, the described WLAN user terminal of step a to the disconnection connection request that the WLAN Access Network sends is: carry and disconnect the disconnection connection request that WLAN user terminal and the current mobile communication operators net that is connected are indicated;
Then among the step b, after the WLAN Access Network disconnects connection between described WLAN user terminal and its current mobile communication operators network that is connected, send to the WLAN user terminal and to disconnect connection response; The WLAN user terminal is initiated the access authentication request to the WLAN Access Network after receiving and disconnecting connection response, after receiving the request user identification message that the WLAN Access Network is sent, and execution in step c.
The 4th kind of situation, the described WLAN user terminal of step a to the disconnection connection request that the WLAN Access Network sends is: carry to disconnect between WLAN user terminal and the WLAN Access Network and be connected the disconnection connection request of indicating;
Then step b further comprises: disconnect the wireless connections between described WLAN user terminal and the WLAN Access Network; Then, the WLAN user terminal is set up wireless connections and is carried out access authentication procedure with the WLAN Access Network again, after receiving the request user identification message that the WLAN Access Network is sent, and execution in step c.
Under above-mentioned first, second, third kind of situation, this method further comprises: if the WLAN user terminal is not received the disconnection connection response, the WLAN user terminal resends the disconnection connection request to the WLAN Access Network.
In the such scheme, the described disconnection connection request of step a is positioned in the EAP-Logoff message of Extensible Authentication Protocol (EAP) and sends.The mobile communication operators net of the current connection of described WLAN user terminal is an accesses network of this user terminal, or is its home network.
Wireless local network user terminal provided by the present invention is reselected the exchange method of Operation Network, because the WLAN user terminal is after determining the mobile communications network that will insert again, just send and disconnect connection request to the WLAN Access Network, the WLAN Access Network is according to corresponding indication, cooperate operations such as finishing follow-up disconnection, reselection procedure network insertion with the WLAN user terminal, so can realize the function that the WLAN user terminal is reselected the PLMN that inserts, and can carry out different processing at different situations, operate very flexible.In addition, because the present invention only does very little change to WLAN user terminal and WLAN Access Network, very little to existing handling process influence, cooperate existing WLAN PLMN selection course to finish the reselection procedure of WLAN user terminal jointly to Operation Network, have very strong practicality.
Description of drawings
Fig. 1 is the schematic network structure of wlan system and the intercommunication of 3GPP system under the roaming condition;
Fig. 2 is the schematic network structure of wlan system and the intercommunication of 3GPP system under the non-roaming situation;
Fig. 3 is the process chart of user terminal selecting mobile communication operators network insertion one embodiment;
Fig. 4 is the process chart of another embodiment of user terminal selecting mobile communication operators network insertion;
Fig. 5 is the handling process schematic diagram of the inventive method;
Fig. 6 is the schematic network structure that WLAN is connected with a plurality of accesses network;
Fig. 7 reselects the schematic flow sheet of network interaction Processing Example one for the present invention;
Fig. 8 reselects the schematic flow sheet of network interaction Processing Example two for the present invention;
Fig. 9 reselects the schematic flow sheet of network interaction Processing Example three for the present invention.
Embodiment
Basic thought of the present invention is: the WLAN user terminal that need reselect network directly sends the disconnection connection request to the WLAN Access Network, finish the connection opening operation of sending out between request user terminal and its current mobile communication operators net that is connected by the WLAN Access Network, afterwards, send out request WLAN user terminal and insert new selected mobile communication operators net again by existing network selecting flow process.
Among the present invention, the prerequisite that the WLAN user terminal carries out network reselection is: this WLAN user terminal is current to have inserted a mobile communication operators net, the current mobile communication operators net that has inserted described here can be VPLMN, also can be the HPLMN of this user terminal.
The reason that the WLAN user terminal is reselected the mobile communication operators network can have multiple, such as: the charging of the mobile communication operators net of current access is higher than another mobile communication operators net, and then the WLAN user terminal wishes to switch to another mobile communication operators net from the mobile communication operators net of current access; The mobile communication operators net of current access has some restrictions to this user terminal access Internet, so the WLAN user terminal wishes to switch to another mobile communication operators net or the like from the mobile communication operators net of current access.Here, described switching can be that user terminal switches to VPLMN from HPLMN, or switches to VPLMN2 from VPLMN1, or switches to HPLMN from VPLMN.
WLAN user terminal of the present invention is reselected the process of mobile communication operators net, as shown in Figure 5, may further comprise the steps:
Step 501～502: the WLAN user terminal that need reselect network need to determine the mobile communication operators network of access again; This WLAN user terminal sends to the WLAN Access Network and disconnects connection request then, and request disconnects the connection with the current 3GPP mobile communication operators net that is connected.
Wherein, the 3GPP mobile communication operators net of the current access of WLAN user terminal can be an accesses network of this WLAN user terminal, also can be home network.Carry indication signaling in the described disconnection connection request, this indication signaling can be divided into three kinds: a kind of is only to indicate the WLAN user terminal need disconnect the mobile communication operators net of current access; Another kind is on the basis of first kind of situation, adds the indication information that this WLAN user terminal need insert again; Also having a kind of is exactly to indicate the WLAN user terminal need disconnect and being connected of WLAN Access Network.
After step 503:WLAN Access Network is received and disconnected connection request, initiate to connect the disconnection process, finish the disconnection that connects between user terminal and its current mobile communication operators network that is connected, and being connected of disconnect user terminal and all business.
Here, for the disconnection connection request that carries first kind and second kind indication signaling, described connection disconnection process only disconnects at this WLAN user terminal carries out the professional connection of transmitting by the WLAN Access Network, and the WLAN user terminal carries out mutual being connected by the WLAN Access Network with the mobile communication operators net of current access; For the disconnection connection request that carries the third indication signaling, it then is thorough disconnection that described connection disconnects process, that is: disconnect wireless connections between WLAN user terminal and the WLAN Access Network, wherein how disconnection of wireless connects with to have the wireless connections disconnection process of WLAN user terminal when WLAN separates now identical.
Being connected between described mobile communication operators net and the WLAN user terminal disconnects and comprising: the professional disconnection that connects, clearing of charge information or the like, the normal process with the mobile communication operators net disconnection connection that is connected with existing WLAN user terminal of concrete processing procedure is identical.
The information of the mobile communication operators net that step 504:WLAN user terminal inserts self expectation is as network selecting information, be carried on and send to the WLAN Access Network in the user identification message, insert new mobile communication operators network according to existing network selecting access process then.Here, if the mobile communication operators net that WLAN user terminal expectation inserts is the accesses network of this user terminal, then according to existing network selecting access process by new visit mobile communication operators net access belonging mobile communications network; If the mobile communication operators net that the expectation of WLAN user terminal inserts is the home network of this user terminal, then according to the direct access belonging mobile communications network of existing network selecting access process.This step comprises three kinds of situations:
After the WLAN Access Network was finished and connected the disconnection process, for the disconnection connection request that carries first kind of indication signaling, the WLAN Access Network only returned the disconnection connection response to the WLAN user terminal.In this case, after the WLAN user terminal was received and disconnected connection response, the information of the mobile communication operators net that self expectation is inserted was placed among the NAI of user identification field as network selecting information; Then, again initiate access authentication procedure, be that the WLAN user terminal sends authentication start message EAPol-Start to the WLAN Access Network, after receiving the request user identification message that the WLAN Access Network is sent, the user ID response message that carries new network selecting information is sent to the WLAN Access Network, insert new mobile communication operators net according to existing network selecting access process afterwards, be exactly specifically, according to step shown in Figure 3, or step shown in Figure 4 is finished the network insertion process.
For the disconnection connection request that carries second kind of indication signaling, because the WLAN Access Network has known that the WLAN user terminal will insert again, so, just directly return the disconnection connection response that contains the indication of request user ID, or directly send the indication of request user ID to the WLAN user terminal to the WLAN user terminal.In this case, after the WLAN user terminal is received and is disconnected connection response or the indication of request user ID, the information of the mobile communication operators net that self expectation is inserted is as network selecting information, be placed among the NAI of user identification field, the user ID response message that directly will carry this network selecting information then sends to the WLAN Access Network, again according to existing network selecting access process, as: Fig. 3 step 303 is to the flow process shown in the step 306, or Fig. 4 step 403 inserts the new mobile communication operators net of selecting to the flow process shown in the step 409.
Under above-mentioned two kinds of situations, do not disconnect connection response or request user ID, can retransmit the disconnection connection request again, and set and retransmit number of times if the WLAN user terminal is received; Or preestablish the wait-for-response time.All do not receive response if retransmit pre-determined number or arrival scheduled wait response time, the information of the mobile communication operators net that the WLAN user terminal also can insert self expectation is as network selecting information, be placed among the NAI of user identification field, again initiate access authentication procedure again, the user identification message that carries this network selecting information is sent to the WLAN Access Network, finish network selecting by Fig. 3 or flow process shown in Figure 4 and insert.
For the disconnection connection request that carries the third indication signaling, because the wireless connections between WLAN Access Network and the WLAN user terminal disconnect, the WLAN Access Network can not return any information to the WLAN user terminal.In this case, the WLAN user terminal rebulids wireless connections, and carries out access authentication procedure after sending the disconnection connection request, this verification process can be that the WLAN user terminal is initiated, and promptly the WLAN user terminal sends authentication start message EAPol-Start to the WLAN Access Network; Also can be that network is initiated, network directly sends EAP-request to the WLAN user terminal after finding that the WLAN user terminal is set up wireless connections.After receiving the request user identification message that the WLAN Access Network is sent, the information of the mobile communication operators net that the WLAN user terminal inserts self expectation is as network selecting information, be placed among the NAI of user identification field, again this network selecting information is carried on and sends to the WLAN Access Network in the user ID response message, insert new mobile communication operators net according to existing network selecting access process then, be exactly specifically, according to the step 303 of Fig. 3 to finishing network insertion shown in the step 306.The described access request of initiating again can the WLAN user terminal send disconnect connection request in, or disconnect and initiating after connecting at once.
Figure 6 shows that certain WLAN Access Network connects the situation of three VPLMN simultaneously, suppose that the WLAN user terminal is current by this WLAN Access Network access VPLMN1, the WLAN user terminal is want to switch to VPLMN2 from VPLMN1 now.Wherein, the corresponding former 3GPP aaa server of VPLMN1, the corresponding new 3GPP aaa server of VPLMN2.Describe the process that the WLAN user terminal is reselected the mobile communication operators net that will insert in detail with three embodiment in conjunction with the accompanying drawings respectively below.
Embodiment one:
In the present embodiment, the WLAN user terminal comprises to the disconnection connection request that the WLAN Access Network sends: the WLAN user terminal need disconnect the indication of VPLMN1 and the indication that the WLAN user terminal need insert VPLMN2 again.So, the WLAN user terminal is reselected the process of the mobile communication operators net that will insert, and comprises as shown in Figure 7:
Step 701:WLAN user terminal is determined to insert VPLMN2 again, and obtains the sign of the VPLMN2 that will insert, i.e. domain name.
Step 702:WLAN user terminal sends indication to the WLAN Access Network and disconnects the disconnection connection request that VPLMN1 connects, and this signaling can adopt existing EAP-Logoff message, contains in this message to show that this WLAN user terminal need insert the indication of VPLMN2 again.
After step 703～704:WLAN Access Network is received and is disconnected connection request, send charging to VPLMN1 and stop request, and to VPLMN1 initiation connection disconnection process, finish the WLAN user terminal disconnects with Internet with being connected, that is: all of disconnection WLAN user terminal are professional connects, but does not disconnect the wireless connections between WLAN user terminal and the WLAN Access Network; Afterwards, the WLAN Access Network sends the disconnection connection response that has the indication of request user ID to the WLAN user terminal, or directly sends the indication of a request user ID to the WLAN user terminal.
Step 705:WLAN user terminal is received the disconnection connection response, or after the indication of request user ID, the sign of VPLMN2 is placed among the NAI of user identification field, the user ID response message that directly will carry the VPLMN2 sign sends to the WLAN Access Network, finishes the access of VPLMN2 then by the network selecting access process shown in step 403～409 among step 303 among Fig. 3～306 or Fig. 4.
Embodiment two:
In the present embodiment, the disconnection connection request that the WLAN user terminal sends to the WLAN Access Network need disconnect the request of VPLMN1 for indication WLAN user terminal.So, the WLAN user terminal is reselected the process of the mobile communication operators net that will insert, and comprises as shown in Figure 8:
Step 801: identical with the step 701 among the embodiment one.
Step 802:WLAN user terminal sends indication to the WLAN Access Network and disconnects the disconnection connection request that VPLMN1 connects, and this signaling can adopt existing EAP-Logoff message.
After step 803～804:WLAN Access Network is received and is disconnected connection request, send charging to VPLMN1 and stop request, and to VPLMN1 initiation connection disconnection process, finish the WLAN user terminal disconnects with Internet with being connected, that is: all of disconnection WLAN user terminal are professional connects, but does not disconnect the wireless connections between WLAN user terminal and the WLAN Access Network; Afterwards, the WLAN Access Network sends to the WLAN user terminal and disconnects connection response.
After step 805:WLAN user terminal is received and is disconnected connection response, the sign of VPLMN2 is placed among the NAI of user identification field, initiate new access authentication request process, promptly sending access authentication to the WLAN Access Network asks clearly, after receiving the request user identification message that the WLAN Access Network is sent, the user ID response message that carries the VPLMN2 sign is sent to the WLAN Access Network, press Fig. 3 or network selecting access process access VPLMN2 shown in Figure 4.
Embodiment three:
Identical with the handling process of step 801～804 among the embodiment two, only different in step 805.Be exactly specifically: after the WLAN user terminal is received and disconnected connection response, the sign of VPLMN2 is placed among the NAI of user identification field, because the wireless connections between WLAN user terminal and the WLAN Access Network do not disconnect, the WLAN user terminal can not initiated the access authentication request process again, but the user ID response message that directly will carry the VPLMN2 sign sends to the WLAN Access Network, finishes the access of VPLMN2 by the network selecting access process shown in step 403～409 among step 303 among Fig. 3～306 or Fig. 4.
Embodiment four:
In the present embodiment, the WLAN user terminal to the disconnection connection request that the WLAN Access Network sends is: indication WLAN user terminal need disconnect the request with the WLAN Access Network.So, the WLAN user terminal is reselected the process of the mobile communication operators net that will insert, and comprises as shown in Figure 9:
Step 901～902: basic identical with step 801～802 among the embodiment two, just disconnect the indication difference in the connection request.
After step 903:WLAN Access Network is received and is disconnected connection request, send charging to VPLMN1 and stop request, and, finish the disconnection that the WLAN user terminal is connected with Internet to VPLMN1 initiation connection disconnection process, that is: disconnect all professional connections of WLAN user terminal; Disconnect the wireless connections between WLAN user terminal and the WLAN Access Network simultaneously, that is to say, finish the thorough disconnection of WLAN user terminal and WLAN.
After the WLAN user terminal disconnects original all connections, rebulid wireless connections with WLAN, the sign of the VPLMN2 that determines according to step 901 then, again initiate the network access authentication process, promptly sending access authentication to the WLAN Access Network asks clearly, after receiving the request user identification message that the WLAN Access Network is sent, the WLAN user terminal is placed on the sign of VPLMN2 among the NAI of user identification field, the user ID response message that will carry the VPLMN2 sign again sends to the WLAN Access Network, inserts VPLMN2 by existing network selecting access process.
The above is preferred embodiment of the present invention only, is not to be used for limiting protection scope of the present invention.
Claims (8)
1, a kind of WLAN (wireless local area network) WLAN user terminal is reselected the exchange method of Operation Network, it is characterized in that, this method may further comprise the steps:
A. the WLAN user terminal that has inserted a mobile communication operators net need be reselected when inserting another with mobile communication operators network that the WLAN Access Network is connected, and described WLAN user terminal is to WLAN Access Network transmission disconnection connection request;
After the b.WLAN Access Network is received and disconnected connection request, disconnect between described WLAN user terminal and its current mobile communication operators network that is connected and connecting;
The c.WLAN user terminal will be reselected the information of another mobile communication operators net of access as network selecting information, be carried on and send to the WLAN Access Network in the user ID response message, through inserting another mobile communication operators network of reselecting behind the authentication.
2, method according to claim 1, it is characterized in that the described WLAN user terminal of step a to the disconnection connection request that the WLAN Access Network sends is: include and disconnect the disconnection connection request that indication was indicated and need be inserted again to WLAN user terminal and the current mobile communication operators net that is connected;
Then among the step b, the WLAN Access Network sends the disconnection connection response that contains the indication of request user ID or directly sends the indication of request user ID to the WLAN user terminal to the WLAN user terminal after disconnecting connection between described WLAN user terminal and its current mobile communication operators network that is connected; After the WLAN user terminal is received and is disconnected connection response or the indication of request user ID, execution in step c.
3, method according to claim 1, it is characterized in that the described WLAN user terminal of step a to the disconnection connection request that the WLAN Access Network sends is: carry and disconnect the disconnection connection request that WLAN user terminal and the current mobile communication operators net that is connected are indicated;
Then among the step b, after the WLAN Access Network disconnects connection between described WLAN user terminal and its current mobile communication operators network that is connected, send to the WLAN user terminal and to disconnect connection response; After the WLAN user terminal is received and is disconnected connection response, execution in step c.
4, method according to claim 1, it is characterized in that the described WLAN user terminal of step a to the disconnection connection request that the WLAN Access Network sends is: carry and disconnect the disconnection connection request that WLAN user terminal and the current mobile communication operators net that is connected are indicated;
Then among the step b, after the WLAN Access Network disconnects connection between described WLAN user terminal and its current mobile communication operators network that is connected, send to the WLAN user terminal and to disconnect connection response; The WLAN user terminal is initiated the access authentication request to the WLAN Access Network after receiving and disconnecting connection response, after receiving the request user identification message that the WLAN Access Network is sent, and execution in step c.
5, method according to claim 1 is characterized in that, the described WLAN user terminal of step a to the disconnection connection request that the WLAN Access Network sends is: carry to disconnect between WLAN user terminal and the WLAN Access Network and be connected the disconnection connection request of indicating;
Then step b further comprises: disconnect the wireless connections between described WLAN user terminal and the WLAN Access Network; Then, the WLAN user terminal is set up wireless connections and is carried out access authentication procedure with the WLAN Access Network again, after receiving the request user identification message that the WLAN Access Network is sent, and execution in step c.
6, according to claim 2,3 or 4 described methods, it is characterized in that this method further comprises: if the WLAN user terminal is not received the disconnection connection response, the WLAN user terminal resends the disconnection connection request to the WLAN Access Network.
According to each described method of claim 1 to 5, it is characterized in that 7, the described disconnection connection request of step a is positioned in the EAP-Logoff message of Extensible Authentication Protocol (EAP) and sends.
According to each described method of claim 1 to 5, it is characterized in that 8, the mobile communication operators net of the current connection of described WLAN user terminal is an accesses network of this user terminal, or is its home network.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410039034 CN1274109C (en) | 2004-01-21 | 2004-01-21 | Interactive method for reselecting operation network for radio local net user terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410039034 CN1274109C (en) | 2004-01-21 | 2004-01-21 | Interactive method for reselecting operation network for radio local net user terminal |
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| CN1649305A CN1649305A (en) | 2005-08-03 |
| CN1274109C true CN1274109C (en) | 2006-09-06 |
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| CN 200410039034 Expired - Fee Related CN1274109C (en) | 2004-01-21 | 2004-01-21 | Interactive method for reselecting operation network for radio local net user terminal |
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