CN102143559B - Realize method and access gateway, system that multi-packet data network connects - Google Patents
Realize method and access gateway, system that multi-packet data network connects Download PDFInfo
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Abstract
The invention discloses and realize the method that multi-packet data network connects, described method specifically includes that and accesses gateway after receiving the network identity currently accessing PDN that terminal sends, according to the network identity currently accessing PDN, obtain the data gateway mark currently accessing PDN, or in the information table of each PDN preserved, find the data gateway mark currently accessing PDN; Further according to acquired data gateway mark, from data gateway, obtain the connection of described terminal currently to access the IP address of PDN and return to described terminal, complete described terminal and currently to access establishment of connection process between PDN. Realize, it addition, the invention also discloses, access gateway and the system that multi-packet data network connects, pass through the solution of the present invention, it is possible to realize terminal in actual applications and set up with multiple PDN simultaneously and be connected.
Description
Technical field
The present invention relates to moving communicating field, particularly relate to and realize method and access gateway, the system that multi-packet data network connects.
Background technology
Third generation partner program 2 (3GPP2, CDMA (CDMA 3rdGenerationPartnershipProject2) defined, CodeDivisionMultipleAccess) 20001x and HRPD (HRPD, HighRatePacketData) network architecture, main by mobile base station/access terminal (MS/AT, MobileStation/AccessTerminal), Radio Access Network (RAN, RadioAccessNetwork), grouping busihess data node (PDSN, PacketDataServingNode), home agent/local mobile anchor (HA/LMA, HomeAgent/LocalMobilityAnchor), remote customer dialing authentication system/authentication and authorization charging server (RADIUS/AAA, RemoteAuthenticationDialInUserService/AuthenticationAuth orizationAccounting) and other core network devices and support node composition.
Fig. 1 gives CDMA20001x and HRPD Packet data service (PDS, PacketDataService) subnetwork structure, wherein:
MS/AT is connected with RAN by its wave point;
RAN includes base station (BS, and Packet Control Function (PCF BaseStation), PacketControlFunction) module, wherein BS is mainly used in setting up the wireless network of coverage cell in community, provides the air interface of Packet data service for MS/AT; PCF module is mainly used in controlling the resource of set up wireless network, forwards the message between BS and PDSN.
PDSN provides the access service of the Internet or application server by RAN for MS/AT, the Main Function of PDSN is the peer-peer protocol (PPP setting up, safeguarding between MS/AT and PDSN, PointtoPointProtocol) session, reception and perform RADIUS/AAA to the authentication, authorization, accounting of MS/AT, route from the packet etc. mailing to packet data network (PDN, PacketDataNetwork);
The Main Function of RADIUS/AAA is that management MS/AT accesses the authority of network, has the service obtained for MS/AT of access rights and complete the charging etc. to the MS/AT being currently in use Internet resources;
HA/LMA is at mobile IP/ proxy-mobile IP (MIP/PMIP, MobileIP/ProxyMobileIP), under scene, it is that MS/AT distributes home address, forwarding uplink data bag and downlink data packet and completes the tunnel encapsulation etc. of packet by PDSN, RADIUS/AAA. Generally, the HA/LMA that different PDN meetings is corresponding different, for instance, the HA/LMA1 in Fig. 1 for connecting the IP address of PDN1 for MS/AT distribution, HA/LMA2 then for connecting the IP address of PDN2 for MS/AT distribution, and HA/LMAn then for connecting the IP address of PDNn for MS/AT distribution.
At present, cdma system is passed through in order to realize MS/AT, set up the connection with multiple PDN simultaneously, namely many PDN connect, the general scheme currently announced is: MS/AT, PDSN, HA/LMA, RADIUS/AAA are by PPP session negotiation and proxy mobile internet protocol edition 4 or version 6 (PMIPv4/v6, etc. ProxyMobileInternetProtocolversion4/version6) agreement interacts, and sets up first PDN and connects; Then, again through Dynamic Host Control Protocol (DHCP, DynamicHostConfigurationProtocol) consult and PMIPv4/v6 agreement, set up second, third etc. multiple PDN connect, it is achieved visit the purpose of multiple PDN simultaneously.
Wherein, MS/AT and the second, third multiple PDN set up when connecting, do not need due to network MS/AT is re-authenticated, PDSN currently cannot access the network identity (NAI of PDN according to the network of the MS/AT PDN sent, or Access Point Name (APN NetworkAccessIdentifier), AccessPointName, ) know the mark such as IP address of corresponding HA/LMA), so, PDSN just can not set up PMIP passage and distribute IP address for MS/AT with corresponding HA/LMA, many PDN that current published scheme cannot realize MS/AT are finally made to connect.
Summary of the invention
In view of this, present invention is primarily targeted at provide realize multi-packet data network connect method and access gateway, system, with solve prior art cannot realize terminal connect multiple PDN technical problem.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
The invention provides a kind of method realizing multi-packet data network PDN connection, described method includes: accesses gateway and receives the network identity currently accessing PDN that terminal sends; According to the received network identity currently accessing PDN, access gateway and obtain the mark of the data gateway currently accessing PDN; Mark according to acquired data gateway, the described gateway that accesses connects, from the described data gateway described terminal of acquisition, the IP address currently accessing PDN, and returns to described terminal, completes described terminal and currently to access establishment of connection process between PDN.
In such scheme, described acquisition currently to access the data gateway mark of PDN, including: the received network identity currently accessing PDN is sent to the network element that AUC maybe can obtain currently accessing the data gateway mark of PDN; Receive the data gateway mark currently accessing PDN that described AUC or described network element return according to the network identity currently accessing PDN received.
In such scheme, described connects, from the described data gateway described terminal of acquisition, the IP address currently accessing PDN, particularly as follows: according to the data gateway mark received, access gateway and be connected with the data gateway foundation currently accessing PDN; Described data gateway be described terminal distribution for connecting the IP address currently accessing PDN, and the IP address distributed is returned to described access gateway; Access the gateway connection by setting up with described data gateway, receive the IP address that described data gateway returns.
Present invention also offers a kind of access gateway realizing multi-packet data network connection, described access gateway includes: first receives unit, the first acquiring unit, second acquisition unit and the first transmitting element, wherein: first receives unit, for receiving the network identity currently accessing PDN that terminal sends; First acquiring unit, for receiving, according to described first, the network identity currently accessing PDN that unit receives, obtains the mark of the data gateway currently accessing PDN; Second acquisition unit, the mark of the data gateway for obtaining according to described first acquiring unit, obtain described terminal from described data gateway and connect the IP address currently accessing PDN; First transmitting element, returns to described terminal for the IP address obtained by described second acquisition unit.
In such scheme, described first acquiring unit includes sending module and the first receiver module, wherein: sending module, the network identity currently accessing PDN received for receiving unit by described first is sent to the network element that AUC maybe can obtain currently accessing the data gateway mark of PDN; First receiver module, for receiving the data gateway mark currently accessing PDN that described AUC or described network element return according to the network identity currently accessing PDN received.
In such scheme, described second acquisition unit includes connecting and the second receiver module, wherein: link block, for the data gateway mark obtained according to described first acquiring unit, sets up with the data gateway currently accessing PDN and is connected; Second receiver module, for the connection set up according to described link block, receive this data gateway that described data gateway returns be described terminal distribution for connecting the IP address currently accessing PDN.
Present invention also offers a kind of realize multi-packet data network connect system, described system include terminal, AUC, data gateway and for realize multi-packet data network connect access gateway; Wherein: terminal, for sending the network identity currently accessing PDN to described access gateway, and receive the IP address connecting and currently accessing PDN that described access gateway returns, complete and currently to access establishment of connection process between PDN; AUC, for obtaining currently accessing the mark of the data gateway of PDN; ; Data gateway, for being used for connecting the IP address currently accessing PDN for described terminal distribution; Access gateway, for the network identity currently accessing PDN sent according to described terminal, obtain the mark of the described data gateway currently accessing PDN from described AUC; Mark according to acquired described data gateway, obtains for connecting the IP address currently accessing PDN from described data gateway; And this IP address obtained is returned to described terminal.
Present invention also offers a kind of method realizing multi-packet data network connection, described method includes: receive the network identity currently accessing PDN that terminal sends; According to the network identity currently accessing PDN received, in the information table including network identity and data gateway mark of each PDN preserved, search the data gateway IP mark currently accessing PDN; According to the data gateway mark found, obtain described terminal from described data gateway and connect the IP address currently accessing PDN, and this IP address is returned to described terminal, complete establishment of connection process between described terminal and the PDN currently accessed.
In such scheme, before receiving the network identity currently accessing PDN that terminal sends, described method also includes: obtain network identity and the data gateway identification of each PDN that described terminal has access to, and by corresponding with data gateway identification for the network identity of each the acquired PDN information table being saved in each PDN.
In such scheme, the process of the described network identity obtaining each PDN that described terminal has access to and data gateway identification, particularly as follows: receive the network identity of any one PDN having access to that described terminal sends; The described network identity received is sent to AUC maybe can obtain each PDN data gateway mark network element in; Receive data gateway mark and/or the network identity of each PDN that described AUC or described network element have access to according to the described terminal that described network identity returns.
Present invention also offers a kind of access gateway realizing multi-packet data network connection, described access gateway includes: memory element, the second reception unit, lookup unit, the 3rd acquiring unit and the second transmitting element, wherein: memory element, for preserving the network identity comprising PDN of each PDN and the information table of data gateway identification; Second receives unit, for receiving the network identity currently accessing PDN that terminal sends; Search unit, for receiving, according to described second, the network identity currently accessing PDN that unit receives, in each information table that described memory element preserves, search the data gateway mark currently accessing PDN; 3rd acquiring unit, for the data gateway mark found according to described lookup unit, obtains described terminal from described data gateway and connects the IP address currently accessing PDN; Second transmitting element, returns to described terminal for the described terminal that described 3rd acquiring unit obtains is connected the IP address currently accessing PDN, completes establishment of connection process between described terminal and the PDN currently accessed.
In such scheme, described access gateway also includes the 4th acquiring unit, wherein: the 4th acquiring unit, for obtaining network identity and the data gateway identification of each PDN that described terminal has access to, and preserves to memory element.
Present invention also offers a kind of system realizing multi-packet data network connection, described system includes: terminal, access gateway and data gateway, wherein: terminal, for sending the network identity currently accessing PDN to described access gateway, and the described terminal receiving the return of described access gateway connects the IP address of current PDN, complete and currently to access establishment of connection process between PDN; Access gateway, for when receiving the network identity currently accessing PDN that described terminal sends, according to the network identity currently accessing PDN received, in the network identity including PDN of each PDN self preserved and the information table of data gateway identification, search the data gateway mark currently accessing PDN; And according to the data gateway mark found, obtain for connecting the IP address currently accessing PDN from data gateway, and this IP address is returned to described terminal, described terminal is connected with the PDN foundation currently accessed according to this IP address; Data gateway, for being used for connecting the IP address currently accessing PDN for described terminal distribution.
In such scheme, described access gateway is additionally operable to: obtain network identity and the data gateway identification of each PDN that described terminal has access to, and by corresponding with data gateway identification for the network identity of each the acquired PDN information table being saved in each PDN.
In such scheme, described terminal is additionally operable to send network identity to described access gateway.
In such scheme, described system also includes AUC, wherein, AUC, for the network identity according to PDN, search data gateway mark and/or the network identity of one or more PDN that described terminal has access to, and return to described access gateway; Described access gateway, specifically for receiving the one or more PDN network identities having access to of described terminal transmission and being transmitted to described AUC; And, in receiving the data gateway mark of each PDN that the described terminal that described AUC returns has access to and/or network identity and being saved in the information table of each PDN.
Realizing many PDN method connected and accessing gateway, system by the present invention, terminal with second, third etc. multiple PDN set up be connected time, from AUC's acquisition or the data gateway mark accessing PDN can be found according to the network identity currently accessing PDN, and finally obtain the connection of described terminal to access the IP address of PDN by setting up with the data gateway accessing PDN to be connected, set up with multiple PDN be simultaneously connected thus realizing terminal in actual applications.
Accompanying drawing explanation
Fig. 1 is the subnetwork structural representation of CDMA2000 system in prior art;
Fig. 2 be a kind of many PDN of realization method of attachment of the present invention realize schematic flow sheet;
Fig. 3 be the data gateway IP address that obtains in Fig. 2 and currently to access PDN realize schematic flow sheet;
Fig. 4 obtains in Fig. 2 to realize schematic flow sheet for what connect the IP address process that currently to access PDN;
Fig. 5 be a kind of specific embodiment in actual applications of method shown in Fig. 1 realize schematic flow sheet;
Fig. 6 be the another kind of specific embodiment in actual applications of method shown in Fig. 1 realize schematic flow sheet
Fig. 7 is that a kind of of the present invention realizes many PDN composition structural representation accessing gateway connected;
Fig. 8 is that a kind of of the present invention realizes the many PDN system connected composition structural representation;
Fig. 9 be the another kind of the present invention realize many PDN method of attachment realize schematic flow sheet;
The one that Figure 10 is the network identity and data gateway identification that obtain each PDN that described terminal has access in Fig. 9 realizes schematic flow sheet;
Figure 11 obtains the network identity of each PDN that has access to of described terminal and the another kind of data gateway identification realizes schematic flow sheet;
Figure 12 be a kind of specific embodiment in actual applications of method shown in Fig. 9 realize schematic flow sheet;
The another kind that Figure 13 is the present invention realizes many PDN composition structural representation accessing gateway connected;
The another kind that Figure 14 is the present invention realizes the many PDN system connected composition structural representation.
Detailed description of the invention
The a kind of of the present invention realizes the method that multi-packet data network connects, and with reference to shown in Fig. 2, mainly comprises the steps that
Step 201: access gateway and receive the network identity currently accessing PDN that terminal sends;
Step 202: according to the received network identity currently accessing PDN, accesses gateway and obtains the mark of the data gateway currently accessing PDN;
Step 203: the mark according to acquired data gateway, access gateway and connect, from the described data gateway described terminal of acquisition, the IP address currently accessing PDN, and return to described terminal, complete described terminal and currently to access establishment of connection process between PDN.
Here, accessing gateway can be PDSN, and terminal can be MS/AT.
Specifically, the network identity of PDN can be NAI or APN.
Here, the mark of data gateway can be the IP address of this data gateway, it is also possible to be the identity of data gateway itself, or other can be identified for that the information of data gateway.
Wherein, step 202 accesses gateway and obtains the data gateway mark currently accessing PDN, with reference to shown in Fig. 3, specifically may include that
Step 301: access gateway and the received network identity currently accessing PDN is sent to the network element that AUC maybe can obtain currently accessing the data gateway mark of PDN;
Step 302: described AUC or network element, according to the network identity currently accessing PDN received, obtain currently accessing the data gateway mark of PDN, and the data gateway obtained mark is returned to described access gateway;
Specifically, described AUC or network element can configure the mark of the data gateway preserving each PDN network identity and each PDN, AUC or network element and obtain currently accessing the mark of the data gateway of PDN according to the network identity currently accessing PDN received by the mode searched or resolve and inquire about;
Or, described AUC or network element, according to the network identity currently accessing PDN received, obtain the data gateway mark currently accessing PDN from other equipment of the mark of the data gateway preserving each PDN network identity and each PDN.
Here, described AUC is specifically as follows AAA/Radius, and described network element can be dns server.
Step 303: described access gateway receives the data gateway mark of described AUC or the return of described network element, terminates currently to obtain the flow process that data gateway identifies.
Here, if the described PDN that currently to access is not the first PDN to access, then the received network identity currently accessing PDN is sent to AUC or described network element, is obtained the mark of the data gateway currently accessing PDN by AUC or described network element.
Specifically, if the PDN currently accessed is the first PDN to access, then realize step 301,302 idiographic flow can be:
Access gateway and comprise, to described AUC or the transmission of described network element, the international mobile subscriber identity (IMSI identifying described terminal identity, InternationalMobileSubscriberIdentity) access request (AccessRequest), and carry the network identity currently accessing PDN simultaneously;
Described AUC or described network element, according to AccessRequest, complete the authentication to described terminal, and find the mark of the data gateway currently accessing PDN according to network identity therein; Authenticating after successfully, returning the access carrying data gateway mark to described access gateway and accept (AccessAccept) response;
Access gateway and receive described AccessAccept, terminate the current flow process obtaining data gateway mark.
If the PDN currently accessed is not the first PDN to access, it is achieved step 301,302 idiographic flow be:
Access gateway according to the received network identity currently accessing PDN, access gateway and send, to described AUC or described network element, the AccessRequest only comprising the network identity currently accessing PDN;
Described AUC or described network element, according to AccessRequest, find the data gateway mark currently accessing PDN, and the AccessAccept only comprising data gateway mark are returned to described access gateway;
Access gateway and receive AccessAccept, terminate the current flow process obtaining data gateway mark.
Wherein, step 203 obtains described terminal from described data gateway and connects the process of the IP address currently accessing PDN, particularly as follows:
According to the data gateway mark received, access gateway and be connected with the data gateway foundation currently accessing PDN;
Described data gateway be described terminal distribution for connecting the IP address currently accessing PDN, and the IP address distributed is returned to described access gateway;
Access the gateway connection by setting up with described data gateway, receive the IP address that described data gateway returns.
Specifically, when described data gateway is designated the IP address of data gateway, accessing gateway can according to this mark, and the mode either directly through binding and/or registration is connected with the foundation of described data gateway; Otherwise, accessing gateway needs first mark according to data gateway, obtains the IP address of this data gateway, to be connected with the foundation of described data gateway according to this IP address.
In practical application, after access gateway obtains the IP address of described data gateway, it is achieved above-mentioned obtains, from data gateway, the process that the connection of described terminal currently to access the IP address of PDN, with reference to, shown in Fig. 4, specifically including below scheme:
Step 401: access gateway according to acquired data gateway IP address, send agent binding request (PBU, ProxyBindingUpdate) comprising described data gateway IP address to described data gateway;
Step 402: after data gateway receives PBU, for described terminal distribution for connecting the IP address currently accessing PDN, and returns to described access gateway by the agent binding response (PBA, ProxyBindingAck) comprising this IP address;
Step 403: access gateway and receive the PBA that described data gateway returns, complete the acquisition process for connecting the IP address currently accessing PDN.
Here, data gateway is specifically as follows HA or LMA.
The two kinds of specific implementations realizing many PDN method of attachment shown in Fig. 2 of the present invention will be elaborated below.
Specific embodiment one
With reference to shown in Fig. 5, in practical application, in the cdma network system comprising MS/AT, RAN, PDSN, multiple multiple HA/LMA and Radius/AAA accessed corresponding to PDN, MS/AT connection is first to access employing IP control protocol (IPCP during PDN, IPControlProtocol), and connect when n-th (N is not less than 2) to access PDN and adopt DHCP, then realize many PDN idiographic flow connected as follows:
Step 501:MS/AT and PDSN carries out the LCP (LCP, LinkControlProtocol) of PPP session and consults.
Step 502:MS/AT and PDSN carries out PPP session negotiation and carries out access authentication, and authentication signaling therein carries the IMSI and first network identity NAI/APN etc. accessing PDN of MS/AT.
Step 503:PDSN sends access request (AccessRequest) to Radius/AAA, request authentication;
Here, AccessRequest can carry the mark IMSI and NAI/APN etc. of MS/AT.
Step 504:Radius/AAA is after receiving access request (AccessRequest), according to information such as IMSI and NAI/APN, by inquiring about the IP address finding the first HA/LMA-1 accessing PDN, and send it to access gateway PDSN by replying access acceptance (AccessAccept) response to PDSN;
Here, step 502-504 is the Radius/AAA process that MS/AT is authenticated, in the present invention when realizing terminal with the first connection accessing PDN, by the process that this authentication is mutual, the IP address of HA/LMA-1 is carried in authentication signaling AccessAccept and is sent to PDSN by Radius/AAA.
Here, PDSN according to the first NAI/APN accessing PDN, can also find other marks of HA/LMA-1 such as identity, then the mark found by this, obtain the IP address of HA/LMA-1, in order to PDSN can send PBU according to the IP address of HA/LMA-1 to HA/LMA-1.
Step 505:MS/AT sends IPCP configuring request to PDSN, has asked ipcp negotiation;
Wherein, it is merely able to support the connection of MS/AT and one PDN based on the ipcp negotiation of IPCP.
Here, IPCP configuring request can be carried the IP address for accessing first NAI/APN, HA/LMA-1 accessing PDN or other marks.
Step 506:PDSN is after receiving IPCP configuring request, and the IP address according to acquired HA/LMA-1, to HA/LMA-1 transmission PBU, request binding;
Wherein, this PBU can comprise the IP address of the Radius/AAA HA/LMA-1 returned.
After step 507:HA/LMA-1 receives the PDSN PBU sent, for MS/AT distribution for connecting first IP address accessing PDN, respond PBA to PDSN;
Here, PBA carries HA/LMA-1 be MS/AT distribution for connecting the first IP address accessing PDN.
Step 508:PDSN, after receiving PBA, sends IPCP to MS/AT and configures response signaling;
Here, IPCP configure in response signaling carry PDSN obtained for connecting first IP address accessing PDN, MS/AT is receiving after this IPCP configures response signaling, complete and first to access establishment of connection process between PDN.
Step 509:MS/AT sends DHCP request to PDSN, and request to access PDN foundation and be connected with second;
Wherein, DHCP can support the connection of MS/AT and multiple PDN, mainly includes the DHCP signalings such as DHCPDISCOVERwithRapidCommit.
Here, DHCP signaling carries second NAI/APN etc. accessing PDN.
Step 510:PDSN receives described DHCP request, judge that MS/AT to access PDN foundation and be connected with second, then PDSN sends access request (AccessRequest) to Radius/AAA, and acquisition request second to access the IP address of the data gateway HA/LMA-2 of PDN;
Or, PDSN after receiving DHCP request, according to the NAI/APN wherein carried, in the IP address of each HA/LMA obtained, can also search whether the IP address of second HA/LMA-2 accessing PDN;
Here, owing to current PDSN only obtains the IP address of HA/LMA-1, and HA/LMA-1 cannot be used for accessing second PDN to access, therefore do not find the IP address of second HA/LMA-2 accessing PDN, then PDSN sends access request (AccessRequest) to Radius/AAA;
Here, AccessRequest can only comprise second network identity NAI/APN accessing PDN entrained in DHCP request.
Here, PDSN sends access request (AccessRequest) to Radius/AAA, can also second HA/LMA-2 accessing PDN of acquisition request other mark such as identity etc., such that it is able to after obtaining requested mark, this mark obtain the IP address of HA/LMA-2.
Step 511:Radius/AAA is after receiving access request (AccessRequest), according to NAI/APN therein, find the IP address of HA/LMA-2, and reply access acceptance (AccessAccept) response to PDSN, inform the IP address of second HA/LMA-2 accessing PDN of PDSN;
Here, AccessAccept can only comprise the IP address of HA/LMA-2.
Here, if PDSN request be other marks of HA/LMA-2 such as identity, then AccessAccept only comprises other of HA/LMA-2 and identifies such as identity.
Step 512:PDSN sends PBU, request binding to HA/LMA-2;
Here, PBU contains the IP address of acquired HA/LMA-2.
Or, if PDSN from Radius/AAA obtain be other marks of HA/LMA-2 such as identity, then need the mark first according to this acquisition, find the IP address of HA/LMA-2, then comprise the PBU of the IP address of HA/LMA-2 to HA/LMA-2 transmission.
Step 513:HA/LMA-2 responds the PBA comprising second IP address accessing PDN of MS/AT connection to PDSN.
Step 514-515:PDSN retransmits DHCP signaling and replys DHCP response to HA/LMA-2, HA/LMA-2 to PDSN, to support that DHCP's is mutual;
Here, DHCP signaling can be that DHCP quickly submits discovery (DHCPDISCOVERwithRapidCommit) signaling to; DHCP response can be that DHCP quickly submits discovery response (DHCPACKwithRapidCommit) signaling to, and DHCP response carries MS/AT and connects second IP address accessing PDN.
Step 516:PDSN, after receiving the HA/LMA-2 DHCP response replied, replys DHCP response to MS/AT;
Here, DHCP response can also be DHCPACKwithRapidCommit signaling, wherein carries MS/AT and connects second IP address accessing PDN.
Step 517:MS/AT, mutual between RAN, PDSN, complete service quality (QoS, QualityofService) consult, A10 sets up and traffic flow template (TFT, TrafficFlowTemplate) flow process such as installation, between the PDN that MS/AT and the second to be accessed, establishment of connection process terminates.
Wherein, repeat step 509-517, MS/AT and follow-up multiple connections accessed between PDN can be realized.
In above-mentioned flow process, MS/AT can also be realized and first connection accessing PDN by IPv6CP, realize flow process identical with the related procedure of above-mentioned IPCP, replace with the related signaling of IPv6CP the difference is that the signaling such as IPCP request etc. that reality is mutual, finally obtain MS/AT and connect first IP address accessing PDN and be specially IPv6 address.
MS/AT can also be realized and second connection accessing PDN by DHCPv6 agreement, realize flow process identical with above-mentioned flow process, institute, the difference is that the DHCP signalings such as DHCP request therein and DHCP response are replaced with corresponding DHCPv6 signaling, finally obtains second IP address accessing PDN of MS/AT connection and is specially IPv6 address.
Such as, when adopting IPv6CP and/or DHCPv6 agreement, set up registration relation between PDSN and HA/LMA-1, HA/LMA-2 to realize connecting, and when adopting IPCP and/or DHCP protocol, set up binding relationship between PDSN and HA/LMA-1, HA/LMA-2 and realize connecting.
Specific embodiment two
With reference to shown in Fig. 6, in practical application, terminal connects first and to access PDN and follow-up multiple all can adopt DHCP when accessing PDN, then realize many PDN idiographic flow connected as follows:
Step 601-step 604: identical with step 501-504;
Step 605:MS/AT and PDSN carries out ipcp negotiation.
Step 606:MS/AT sends DHCP request to PDSN, and request to access PDN foundation and be connected with first;
Step 607-608: identical with step 506-507;
Step 609-610:PDSN sends DHCP request and replys the DHCP response carrying first IP address accessing PDN of MS/AT connection to HA/LMA-1, HA/LMA-1 to PDSN;
Step 611:PDSN replys DHCP response to MS/AT, carries MS/AT and connect first IP address accessing PDN in DHCP response;
Step 612:MS/AT, RAN, PDSN complete the flow processs such as QoS negotiation, A10 foundation and TFT installation, and MS/AT to first connection establishment accessing PDN completes.
Step 613-621: identical with step 509-517.
In the present embodiment, MS/AT need to connect the 3rd to access PDN, the 4th to access follow-up multiple such as PDN to access PDN time, the flow process repeating step 613-621 can realize.
The present embodiment can also be realized by DHCPv6 agreement, and process is identical with specific embodiment one.
For realizing the method connected of the many PDN shown in Fig. 2, present invention also offers a kind of access gateway realizing many PDN connection, with reference to shown in Fig. 7, specifically include that first reception unit the 71, first acquiring unit 72, second acquisition unit 73 and the first transmitting element 74, wherein:
First receives unit 71, for receiving the network identity currently accessing PDN that terminal sends;
First acquiring unit 72, for receiving, according to described first, the network identity currently accessing PDN that unit 71 receives, obtains the mark of the data gateway currently accessing PDN;
Second acquisition unit 73, the mark of the data gateway for obtaining according to described first acquiring unit 72, obtain described terminal from described data gateway and connect the IP address currently accessing PDN;
First transmitting element 74, for the IP address that described second acquisition unit 73 obtains is returned to described terminal, completes described terminal and currently to access establishment of connection process between PDN.
Wherein, described first acquiring unit 72 specifically includes that sending module 721 and the first receiver module 722, wherein:
Sending module 721, the network identity currently accessing PDN received for receiving unit by described first is sent to the network element that AUC maybe can obtain currently accessing the data gateway mark of PDN;
First receiver module 722, for receiving the data gateway mark currently accessing PDN that described AUC or described network element return according to the network identity currently accessing PDN received.
Wherein, second acquisition unit 73 specifically includes that link block 731 and the second receiver module 732, wherein:
Link block 731, for the data gateway mark obtained according to described first acquiring unit 72, sets up with the data gateway currently accessing PDN and is connected;
Second receiver module 732, for the connection set up according to described link block 731, receive this data gateway that described data gateway returns be described terminal distribution for connecting the IP address currently accessing PDN.
Additionally, for realizing the many PDN method of attachment shown in Fig. 2, the a kind of of the present invention realizes the system that multi-packet data network connects, with reference to, shown in Fig. 8, specifically including that terminal 81, AUC 82, data gateway 83 and the above-mentioned access gateway 84 realizing multi-packet data network connection; Wherein:
Terminal 81, for sending, to described access gateway 84, the network identity currently accessing PDN, and receives the IP address connecting and currently accessing PDN that described access gateway 84 returns, completes and currently to access establishment of connection process between PDN;
AUC 82, for obtaining currently accessing the mark of the data gateway of PDN;
Data gateway 83, for being used for connecting the IP address currently accessing PDN for the distribution of described terminal 81;
Access gateway 84, for the network identity currently accessing PDN sent according to described terminal 81, obtain the mark of the described data gateway 83 currently accessing PDN from described AUC 82; Mark according to acquired described data gateway 83, obtains for connecting the IP address currently accessing PDN from described data gateway 83; And this IP address obtained is returned to described terminal 81.
Concrete, the network identity currently accessing PDN that the terminal 81 received is sent by access gateway 84 is sent to AUC 82;
AUC 82 currently to access the network identity of PDN further according to this, in the mapping table that the network identity of each PDN himself preserved and the data gateway of each PDN identify, find the described data gateway mark currently accessing PDN, and the IP address of the described data gateway found is returned to described access gateway 84;
Access the data gateway mark that gateway 84 returns further according to the AUC 82 received, set up with described data gateway 83 and be connected; This IP address, after being used for connecting the IP address currently accessing PDN for described terminal distribution, is returned to access gateway 84 by data gateway 83;
Finally, access gateway 84 and receive described connection and currently to access the IP address of PDN, and be sent to terminal 81, the process completing terminal 81 and being connected with the foundation that currently to access PDN.
Here, described AUC 82 can also by replacing according to the network element such as dns server of the data gateway mark that the network identity of PDN obtains this PDN.
Here, by the present invention for realize many PDN connect access gateway and realize many PDN connect system, complete terminal and describe in detail hereinbefore with multiple PDN idiographic flow being connected, do not repeat them here.
Additionally, for can solve the problem that prior art cannot realize the problem that terminal connects multiple PDN, present invention also offers a kind of following many PDN method connected that realizes, shown in reference Fig. 9, the method mainly comprises the steps that
Step 901: access gateway and receive the network identity currently accessing PDN that terminal sends;
Step 902: according to the network identity currently accessing PDN received, in the information table including network identity and data gateway mark of each PDN preserved, accesses gateway and searches the data gateway mark currently accessing PDN;
Here, the information of each PDN that access gateway preserves can comprise the information such as the data gateway mark of the network identity of PDN, each PDN, the mode of mapping table specifically can be adopted to preserve, it is simple to the network identity according to PDN, find the mark of the data gateway of this PDN.
Step 903: the mark according to the data gateway found, access gateway and connect, from the described data gateway described terminal of acquisition, the IP address currently accessing PDN, and this IP address is returned to described terminal, complete establishment of connection process between described terminal and the PDN currently accessed.
Wherein, the above-mentioned method realizing many PDN connection, it is also possible to comprise the following steps:
Step 901A: access gateway and obtain network identity and its data gateway mark of each PDN that described terminal has access to, and by the network identity information table being saved in each PDN corresponding to data gateway identification of acquired each PDN;
Specifically, in step 901A, accessing gateway and obtain the network identity of each PDN that described terminal has access to and the process of data gateway identification, with reference to shown in Figure 10, idiographic flow is as follows:
Step 1001: access gateway and receive the network identity of each PDN having access to that described terminal sends;
Specifically, the PDN that terminal has access to is set by Network Provider.
Step 1002: access gateway the network identity of each PDN received is sent to AUC maybe can obtain each PDN data gateway mark network element in;
Step 1003: the mark of the data gateway of each PDN that the access gateway described AUC of reception or described network element have access to according to the described terminal that the network identity receiving each PDN returns so that accessing gateway can identify the data gateway of each PDN in the information being saved in each PDN corresponding to its network identity.
Specifically, AUC or described network element are after the network identity receiving each PDN that the described terminal accessing gateway transmission has access to, in the information that the network identity including each PDN self preserved and data gateway thereof identify, network identity according to each PDN received, find each data gateway mark of correspondence, and data gateway mark and/or the network identity of each PDN found are returned to described access gateway.
With reference to, shown in Figure 11, step 901A accessing gateway and obtains the network identity of each PDN that described terminal has access to and the process of data gateway identification, it is also possible to being realized by below scheme, idiographic flow is:
Step 1101: access gateway and receive the network identity of any one PDN having access to that described terminal sends;
Step 1102: access gateway and the network identity of the described PDN received is sent in the network element of data gateway mark that AUC maybe can obtain each PDN;
Step 1103: the data gateway mark of each PDN that the access gateway described AUC of reception or described network element have access to according to the described terminal that the network identity of the PDN received returns and network identity so that accessing gateway can identify the data gateway of each PDN that described terminal has access in the information being saved in each PDN corresponding to network identity.
Specifically, AUC or described network element are after receiving the network identity accessing the PDN that gateway sends, in the identity including terminal self preserved, and in the network identity of each PDN that has access to of terminal and the information of data gateway identification, network identity according to the PDN received, first find the identity of described terminal, further according to the identity found, find data gateway mark and the network identity of each PDN that described terminal has access to, and data gateway mark and the network identity of each PDN found are returned to described access gateway.
Wherein, step 903 accesses gateway acquisition identical with the above process shown in Fig. 4 for the process connecting the IP address currently accessing PDN, do not repeat them here.
In practical application, above-mentioned access gateway is realized by PDSN, and AUC can be Radius/AAA, and described network element can be dns server, and terminal can be MS or AT, and data gateway then can be realized by HA or LMA.
The specific implementation realizing many PDN method of attachment shown in Fig. 9 of the present invention will be described in further details below.
As shown in figure 12, by comprising the cdma network system of MS/AT, RAN, PDSN, multiple multiple HA/LMA such as HA/LMA-1 and HA/LMA-2 accessing PDN etc. and Radius/AAA, it is achieved the idiographic flow of the many PDN method of attachment shown in Fig. 9 is as follows:
Step 1201:MS/AT and PDSN carries out the LCP of PPP session and consults;
The mutual PPP of step 1202:MS/AT and PDSN authenticates signaling, the network identity NAI/APN carrying MS/AT each PDN having access to or one that carries acquiescence have access to PDN network identity NAI/APN;
Step 1203:PDSN sends access request (AccessRequest) to Radius/AAA, request authentication;
Wherein, AccessRequest can carry the NAI/APN etc. of have access to PDN of NAI/APN or the MS/AT acquiescence transmission identifying IMSI and the MS/AT all PDN having access to of MS/AT.
After step 1204:Radius/AAA receives AccessRequest, according to information such as IMSI and NAI/APN therein, search IP address and/or the network identity of the HA/LMA of MS/AT each PDN having access to, and reply access acceptance (AccessAccept) response to PDSN, complete authentication;
Wherein, AccessAccept carries IP address and/or the network identity of the HA/LMA of the MS/AT all PDN having access to.
Step 1205:PDSN is after receiving AccessAccept, by the IP address information being saved in each PDN corresponding to network identity of the HA/LMA of all each PDN having access to of MS/AT.
Step 1206:MS/AT sends IPCP configuring request to PDSN, carries first NAI/APN accessing PDN, asked ipcp negotiation in this IPCP configuring request.
Step 1207:PDSN receives IPCP configuring request, and according to first NAI/APN accessing PDN wherein carried, find the IP address of first HA/LMA-1 accessing PDN the mark according to the HA/LMA-1 found, PBU, request binding is sent to HA/LMA-1;
Here, PDSN according to second NAI/APN accessing PDN, can also find other marks of HA/LMA-2 such as identity, then has this mark, obtains the IP address of HA/LMA-2, sends PBU according to the IP address of HA/LMA-2 to HA/LMA-2.
Wherein, PBU can comprise the IP address of HA/LMA-1.
Step 1208:HA/LMA-1 responds PBA to PDSN;
Wherein, PBA carries first IP address accessing PDN of connection that HA/LMA-1 is MS/AT distribution.
After step 1209:PDSN receives PBA, sending IPCP to MS/AT and configure response signaling, MS/AT receives this IPCP and configures after response signaling, to access, according to connection therein first, the PDN foundation IP address of PDN accessed with first and be connected;
Wherein, IPCP configures and carries first IP address accessing PDN of MS/AT connection in response signaling.
Step 1210:MS/AT sends the DHCP request carrying second NAI/APN accessing PDN to PDSN, and request connects second PDN to access.
Step 1211:PDSN, according to second NAI/APN accessing PDN carried in DHCP request, finds the IP address of second HA/LMA-2 accessing PDN the IP address according to the HA/LMA-2 found, and sends PBU, request binding to HA/LMA-2;
Here, PDSN according to second NAI/APN accessing PDN, can also find other marks of HA/LMA-2 such as identity, then has this mark found, and obtains the IP address of HA/LMA-2, sends PBU according to the IP address of HA/LMA-2 to HA/LMA-2.
Wherein, PBU can comprise the IP address of HA/LMA-2.
Step 1212:HA/LMA-2 responds PBA to PDSN;
Wherein, PBA contains second IP address accessing PDN of connection that HA/LMA-2 is MS/AT distribution.
Step 1213:PDSN sends DHCP request to HA/LMA-2.
Step 1214:HA/LMA-2 replys DHCP response to PDSN;
Here, DHCP response can comprise second IP address accessing PDN of connection that HA/LMA-2 is MS/AT distribution.
Step 1215:PDSN replys DHCP response to MS/AT, completes MS/AT and obtains the process connecting second IP address accessing PDN;
Here, DHCP response can comprise second IP address accessing PDN of connection that HA/LMA-2 is MS/AT distribution.
Step 1216:MS/AT, RAN, PDSN interact, and complete the flow processs such as QoS negotiation, A10 foundation and TFT installation, and MS/AT completes to set up, between second PDN to access, the process being connected.
In the present embodiment, MS/AT need to connect the 3rd to access PDN, the 4th to access follow-up multiple such as PDN to access PDN time, the flow process repeating step 1209-1215 can realize.
The present embodiment can also be realized by IPv6CP and DHCPv6.
For realizing the method connected of the many PDN shown in Fig. 9, present invention also offers a kind of access gateway realizing many PDN connection, with reference to, shown in Figure 13, specifically including that memory element 135, second receives unit 131, searches unit the 132, the 3rd acquiring unit 133 and the second transmitting element 134, wherein:
Memory element 135, for preserving the network identity comprising PDN of each PDN and the information table of data gateway identification;
Second receives unit 131, for receiving the network identity currently accessing PDN that terminal sends;
Search unit 132, for receiving, according to described second, the network identity currently accessing PDN that unit 131 receives, in each information table preserved in memory element 135, search the data gateway mark currently accessing PDN;
3rd acquiring unit 133, for the data gateway mark found according to described lookup unit 132, obtains described terminal from described data gateway and connects the IP address currently accessing PDN;
Second transmitting element 134, the described terminal for being obtained by described 3rd acquiring unit 133 connects the IP address currently accessing PDN and returns to described terminal, completes establishment of connection process between described terminal and the PDN currently accessed.
Wherein, described access gateway also includes the 4th acquiring unit 136, wherein:
4th acquiring unit 136, for obtaining network identity and the data gateway identification of each PDN that described terminal has access to, and preserves to memory element 135.
Wherein, described 4th acquiring unit 136, specifically for:
The network identity of the network identity receiving any one PDN having access to that described terminal sends or each PDN having access to, and the network identity of receive network identity or each PDN having access to PDN is sent to the network element that AUC maybe can obtain the data gateway mark of each PDN; Receive data gateway mark and/or the network identity of each PDN that the network identity of network identity or each PDN that described AUC or described network element have access to PDN according to one returns.
For realizing the many PDN method of attachment shown in Fig. 9, present invention also offers a kind of system realizing many PDN connection, as shown in figure 14, described system includes: terminal 141, access gateway 142 and data gateway 143, wherein:
Terminal 141, for sending, to described access gateway 142, the network identity currently accessing PDN, and receive that described access gateway 142 returns for connecting the IP address currently accessing PDN, complete and currently to access establishment of connection process between PDN;
Access gateway 142, for when receiving the network identity currently accessing PDN that described terminal sends, according to the network identity currently accessing PDN received, in the network identity comprising PDN of each PDN having access in the described terminal self preserved and the information table of data gateway identification, search the data gateway mark currently accessing PDN; And according to the data gateway mark found, obtain for connecting the IP address currently accessing PDN from described data gateway 143, and this IP address is returned to described terminal;
Data gateway 143, for being used for connecting the IP address currently accessing PDN for described terminal distribution.
Wherein, described access gateway 142 is additionally operable to:
Obtain network identity and the data gateway identification of each PDN that described terminal has access to, and by corresponding with data gateway identification for the network identity of each the acquired PDN information table being saved in each PDN.
Specifically, described terminal 141 is additionally operable to send the network identity of any one or each PDN having access to described access gateway.
Described system also includes AUC 144, for the network identity according to PDN, searches data gateway mark and/or the network identity of one or more PDN that described terminal has access to, and returns to described access gateway;
Described access gateway 142, in receiving one or more PDN network identities having access to that described terminal sends and being transmitted to described AUC 144 and receive the data gateway mark of each PDN that the described terminal that described AUC 144 returns has access to and/or network identity and be saved in the information table of each PDN.
Here, described AUC 143 can also by replacing according to the network element such as dns server of the data gateway mark that the network identity of PDN obtains this PDN.
In actual applications, by shown in Figure 13 realize that many PDN connect access gateway and or by realizing many PDN system connected shown in Figure 14, complete terminal and multiple PDN idiographic flow being connected, as detailed above, do not repeat them here.
The above, be only presently preferred embodiments of the present invention, is not intended to limit protection scope of the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (7)
1. one kind realizes the multi-packet data network PDN method connected, it is characterised in that described method includes:
Access gateway and receive the network identity currently accessing PDN that terminal sends;
According to the received network identity currently accessing PDN, access gateway and obtain the mark of the data gateway currently accessing PDN;
Mark according to acquired data gateway, the described gateway that accesses connects, from the described data gateway described terminal of acquisition, the IP address currently accessing PDN, and returns to described terminal, completes described terminal and currently to access establishment of connection process between PDN;
Described connects, from the described data gateway described terminal of acquisition, the IP address currently accessing PDN, particularly as follows:
According to the data gateway mark received, access gateway and be connected with the data gateway foundation currently accessing PDN;
Described data gateway be described terminal distribution for connecting the IP address currently accessing PDN, and the IP address distributed is returned to described access gateway;
Access the gateway connection by setting up with described data gateway, receive the IP address that described data gateway returns;
Described acquisition currently to access the data gateway mark of PDN, including:
The received network identity currently accessing PDN is sent to the network element that AUC maybe can obtain currently accessing the data gateway mark of PDN;
Receive the data gateway mark currently accessing PDN that described AUC or described network element return according to the network identity currently accessing PDN received; Wherein,
Described AUC or network element can configure the mark of the data gateway preserving each PDN network identity and each PDN, AUC or network element and obtain currently accessing the mark of the data gateway of PDN according to the network identity currently accessing PDN received by the mode searched or resolve and inquire about; Or, described AUC or network element, according to the network identity currently accessing PDN received, obtain the data gateway mark currently accessing PDN from other equipment of the mark of the data gateway preserving each PDN network identity and each PDN.
2. one kind realizes the access gateway that multi-packet data network connects, it is characterised in that described access gateway includes: first receives unit, the first acquiring unit, second acquisition unit and the first transmitting element, wherein:
First receives unit, for receiving the network identity currently accessing PDN that terminal sends;
First acquiring unit, for receiving, according to described first, the network identity currently accessing PDN that unit receives, obtains the mark of the data gateway currently accessing PDN;
Second acquisition unit, the mark of the data gateway for obtaining according to described first acquiring unit, obtain described terminal from described data gateway and connect the IP address currently accessing PDN;
First transmitting element, returns to described terminal for the IP address obtained by described second acquisition unit; Wherein,
Described second acquisition unit includes connecting and the second receiver module;
Link block, for the data gateway mark obtained according to described first acquiring unit, sets up with the data gateway currently accessing PDN and is connected;
Second receiver module, for the connection set up according to described link block, receive this data gateway that described data gateway returns be described terminal distribution for connecting the IP address currently accessing PDN;
Described first acquiring unit includes sending module and the first receiver module, wherein:
Sending module, the network identity currently accessing PDN received for receiving unit by described first is sent to the network element that AUC maybe can obtain currently accessing the data gateway mark of PDN;
First receiver module, for receiving the data gateway mark currently accessing PDN that described AUC or described network element return according to the network identity currently accessing PDN received; Wherein,
Described AUC or network element can configure the mark of the data gateway preserving each PDN network identity and each PDN, AUC or network element and obtain currently accessing the mark of the data gateway of PDN according to the network identity currently accessing PDN received by the mode searched or resolve and inquire about; Or, described AUC or network element, according to the network identity currently accessing PDN received, obtain the data gateway mark currently accessing PDN from other equipment of the mark of the data gateway preserving each PDN network identity and each PDN.
3. one kind realize multi-packet data network connect system, it is characterised in that described system include terminal, AUC, data gateway and for realize multi-packet data network connect access gateway; Wherein:
Terminal, for sending the network identity currently accessing PDN to described access gateway, and receives the IP address connecting and currently accessing PDN that described access gateway returns, completes and currently to access establishment of connection process between PDN;
AUC, for obtaining currently accessing the mark of the data gateway of PDN;
Data gateway, for being used for connecting the IP address currently accessing PDN for described terminal distribution;
Access gateway, for the network identity currently accessing PDN sent according to described terminal, obtain the mark of the described data gateway currently accessing PDN from described AUC; Mark according to acquired described data gateway, obtains for connecting the IP address currently accessing PDN from described data gateway; And this IP address obtained is returned to described terminal; Wherein,
Described obtains for connecting the IP address currently accessing PDN from described data gateway, particularly as follows:
According to the data gateway mark received, access gateway and be connected with the data gateway foundation currently accessing PDN;
Described data gateway be described terminal distribution for connecting the IP address currently accessing PDN, and the IP address distributed is returned to described access gateway;
Access the gateway connection by setting up with described data gateway, receive the IP address that described data gateway returns;
Described AUC can configure the mark of the data gateway preserving each PDN network identity and each PDN, and AUC obtains currently accessing the mark of the data gateway of PDN according to the network identity currently accessing PDN received by the mode searched or resolve and inquire about; Or, described AUC, according to the network identity currently accessing PDN received, obtains the data gateway mark currently accessing PDN from other equipment of the mark of the data gateway preserving each PDN network identity and each PDN.
4. one kind realizes the method that multi-packet data network connects, it is characterised in that described method includes:
Receive the network identity currently accessing PDN that terminal sends;
According to the network identity currently accessing PDN received, in the information table including network identity and data gateway mark of each PDN preserved, search the data gateway IP mark currently accessing PDN;
According to the data gateway mark found, obtain described terminal from described data gateway and connect the IP address currently accessing PDN, and this IP address is returned to described terminal, complete establishment of connection process between described terminal and the PDN currently accessed; Wherein,
Described connects, from the described data gateway described terminal of acquisition, the IP address currently accessing PDN, particularly as follows:
According to the data gateway mark received, access gateway and be connected with the data gateway foundation currently accessing PDN;
Described data gateway be described terminal distribution for connecting the IP address currently accessing PDN, and the IP address distributed is returned to described access gateway;
Access the gateway connection by setting up with described data gateway, receive the IP address that described data gateway returns;
Before receiving the network identity currently accessing PDN that terminal sends, described method also includes:
Obtain network identity and the data gateway identification of each PDN that described terminal has access to, and by corresponding with data gateway identification for the network identity of each the acquired PDN information table being saved in each PDN;
The described network identity obtaining each PDN that described terminal has access to and the process of data gateway identification, particularly as follows:
Receive the network identity of any one PDN having access to that described terminal sends;
The described network identity received is sent to AUC maybe can obtain each PDN data gateway mark network element in;
Receive data gateway mark and/or the network identity of each PDN that described AUC or described network element have access to according to the described terminal that described network identity returns;
Described AUC or network element can configure the mark of the data gateway preserving each PDN network identity and each PDN, AUC or network element and obtain currently accessing the mark of the data gateway of PDN according to the network identity currently accessing PDN received by the mode searched or resolve and inquire about; Or, described AUC or network element, according to the network identity currently accessing PDN received, obtain the data gateway mark currently accessing PDN from other equipment of the mark of the data gateway preserving each PDN network identity and each PDN.
5. one kind realizes the access gateway that multi-packet data network connects, it is characterised in that described access gateway includes: memory element, the second reception unit, lookup unit, the 3rd acquiring unit and the second transmitting element, wherein:
Memory element, for preserving the network identity comprising PDN of each PDN and the information table of data gateway identification;
Second receives unit, for receiving the network identity currently accessing PDN that terminal sends;
Search unit, for receiving, according to described second, the network identity currently accessing PDN that unit receives, in each information table that described memory element preserves, search the data gateway mark currently accessing PDN;
3rd acquiring unit, for the data gateway mark found according to described lookup unit, obtains described terminal from described data gateway and connects the IP address currently accessing PDN;
Second transmitting element, returns to described terminal for the described terminal that described 3rd acquiring unit obtains is connected the IP address currently accessing PDN, completes establishment of connection process between described terminal and the PDN currently accessed; Wherein,
Described connects, from the described data gateway described terminal of acquisition, the IP address currently accessing PDN, particularly as follows:
According to the data gateway mark received, access gateway and be connected with the data gateway foundation currently accessing PDN;
Described data gateway be described terminal distribution for connecting the IP address currently accessing PDN, and the IP address distributed is returned to described access gateway;
Access the gateway connection by setting up with described data gateway, receive the IP address that described data gateway returns;
Described access gateway also includes the 4th acquiring unit, wherein:
4th acquiring unit, for obtaining network identity and the data gateway identification of each PDN that described terminal has access to, and preserves to memory element;
The described network identity obtaining each PDN that described terminal has access to and the process of data gateway identification, particularly as follows:
Receive the network identity of any one PDN having access to that described terminal sends;
The described network identity received is sent to AUC maybe can obtain each PDN data gateway mark network element in;
Receive data gateway mark and/or the network identity of each PDN that described AUC or described network element have access to according to the described terminal that described network identity returns;
Described AUC or network element can configure the mark of the data gateway preserving each PDN network identity and each PDN, AUC or network element and obtain currently accessing the mark of the data gateway of PDN according to the network identity currently accessing PDN received by the mode searched or resolve and inquire about; Or, described AUC or network element, according to the network identity currently accessing PDN received, obtain the data gateway mark currently accessing PDN from other equipment of the mark of the data gateway preserving each PDN network identity and each PDN.
6. one kind realizes the system that multi-packet data network connects, it is characterised in that described system includes: terminal, access gateway and data gateway, wherein:
Terminal, for sending the network identity currently accessing PDN to described access gateway, and the described terminal receiving the return of described access gateway connects the IP address of current PDN, completes and currently to access establishment of connection process between PDN;
Access gateway, for when receiving the network identity currently accessing PDN that described terminal sends, according to the network identity currently accessing PDN received, in the network identity including PDN of each PDN self preserved and the information table of data gateway identification, search the data gateway mark currently accessing PDN; And according to the data gateway mark found, obtain for connecting the IP address currently accessing PDN from data gateway, and this IP address is returned to described terminal, described terminal is connected with the PDN foundation currently accessed according to this IP address;
Data gateway, for being used for connecting the IP address currently accessing PDN for described terminal distribution; Wherein,
Described obtains for connecting the IP address currently accessing PDN from data gateway, particularly as follows:
According to the data gateway mark received, access gateway and be connected with the data gateway foundation currently accessing PDN;
Described data gateway be described terminal distribution for connecting the IP address currently accessing PDN, and the IP address distributed is returned to described access gateway;
Access the gateway connection by setting up with described data gateway, receive the IP address that described data gateway returns; Described access gateway is additionally operable to:
Obtain network identity and the data gateway identification of each PDN that described terminal has access to, and by corresponding with data gateway identification for the network identity of each the acquired PDN information table being saved in each PDN;
Described system also includes AUC, wherein,
AUC, for the network identity according to PDN, searches data gateway mark and/or the network identity of one or more PDN that described terminal has access to, and returns to described access gateway;
Described access gateway, specifically for receiving the one or more PDN network identities having access to of described terminal transmission and being transmitted to described AUC; And, in receiving the data gateway mark of each PDN that the described terminal that described AUC returns has access to and/or network identity and being saved in the information table of each PDN;
Described AUC can configure the mark of the data gateway preserving each PDN network identity and each PDN, and AUC obtains currently accessing the mark of the data gateway of PDN according to the network identity currently accessing PDN received by the mode searched or resolve and inquire about; Or, described AUC, according to the network identity currently accessing PDN received, obtains the data gateway mark currently accessing PDN from other equipment of the mark of the data gateway preserving each PDN network identity and each PDN.
7. realize the system that multi-packet data network connects according to claim 6, it is characterised in that described terminal is additionally operable to send network identity to described access gateway.
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| CN103686846B (en) * | 2012-09-07 | 2019-04-05 | 中兴通讯股份有限公司 | Data message transmission method, PDN connection identifier processing method and device |
| CN103716771B (en) * | 2012-09-28 | 2016-12-21 | 电信科学技术研究院 | The information maintenance method of non-seamless WLAN shunt connection, Apparatus and system |
| EP2919528B1 (en) * | 2012-11-28 | 2018-01-10 | Huawei Technologies Co., Ltd. | Mobile network communication method, communication device and communication system |
| CN103298148B (en) * | 2013-06-28 | 2017-04-12 | 华为技术有限公司 | Method for connecting mobile terminal to multiple PDNs (public data networks) through fixed network and related device |
| CN104754634B (en) * | 2013-12-31 | 2018-08-03 | 联芯科技有限公司 | Test the method and its device of multichannel PDN |
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