CN103298148A - Method for connecting mobile terminal to multiple PDNs (public data networks) through fixed network and related device - Google Patents
Method for connecting mobile terminal to multiple PDNs (public data networks) through fixed network and related device Download PDFInfo
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- CN103298148A CN103298148A CN2013102694968A CN201310269496A CN103298148A CN 103298148 A CN103298148 A CN 103298148A CN 2013102694968 A CN2013102694968 A CN 2013102694968A CN 201310269496 A CN201310269496 A CN 201310269496A CN 103298148 A CN103298148 A CN 103298148A
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Abstract
The invention discloses a method for connecting a mobile terminal to multiple PDNs (public data networks) through a fixed network and a related device. The method includes that after the mobile terminal is connected to a first PDN through a gateway of the fixed network and when the mobile terminal needs to be connected to a second PDN through the gateway of the fixed network, the mobile terminal sends a DHCP (dynamic host configuration protocol) request to the gateway of the fixed network, the DHCP request carries an identity of the second PDN, and the first PDN is different from the second PDN; the mobile terminal receives DHCP response information sent by the gateway of the fixed network, and the DHCP response information carries an IP (internet protocol) address of the mobile terminal in the second PDN. By the method and the related device, the mobile terminal can be simultaneously accessed to multiple networks through the fixed network, two-layer processing logic of the mobile terminal does not need to be changed, a large amount of configuration work is not needed, and easiness in maintenance is realized.
Description
Technical field
The application relates to network communication field, particularly relates to portable terminal is connected to a plurality of PDN networks by fixed network method and relevant apparatus.
Background technology
Fixed network and mobile network's fusion can bring the irrelevant experience of access network for the user.At third generation partner program (3rd Generation Partnership Project, 3GPP) in the network, subscriber equipment (User Equipment, portable terminal) can support a plurality of packet data network (Packet Data Network at the interface of 3GPP, PDN) connect, as use internet APN (Access Point Name, APN) insert the Internet gateway, use Session initiation Protocol APN to insert the IMS network gateway, use the gateway of the APN access carrier acquiescence of giving tacit consent to etc.In the prior art, realize that many PDN of portable terminal connect, can (Internet Protocol, IP) realize the address, also can realize by an IP address by the agreement that interconnects between a plurality of networks.
At first the mode that realizes by a plurality of IP address is, in 3GPP TR23.852R12, a kind of is at VLAN (Virtual Local Area Network, VLAN) a plurality of point-to-point connections of binding (Point to Point, P2P link) mode, a kind of is in believable WLAN IAD (Trusted WLAN Access Gateway, TWAG) physical address (Medium/Media Access Control, MAC) mode of many P2P of binding link.This dual mode all relates to the modification of two layers processing logic, bind in the scheme of many P2P link at VLAN, need expansion portable terminal supported vlans interface, flow at each PDN encapsulates specific VLAN, (Wireless Local Area Networks is WLAN) in the network to re-send to WLAN.TWAG MAC binds in the scheme of many P2P link, the uplink traffic of portable terminal need be according to the different TWAG MAC of purpose MAC encapsulation that do not coexist of APN, and the downlink traffic that portable terminal is received need insert different PDN according to source MAC and connect corresponding application.
In the prior art, portable terminal has only an IP address also can support a plurality of PDN.In this technical scheme, the WLAN interface of portable terminal has only the IP of a 3GPP, at wideband network gateway (Broadband Network Gateway, BNG)/TWAG carries out network address translation (Network Address Translation to it, NAT), the PDN(acquiescence APN that inserts other does not more need NAT).This scheme portable terminal only accepts to give tacit consent to the IP address of PDN, and all with the IP-1 encapsulation, its executive mode is specially all flows:
The APN that the good portable terminal of gateway configuration that defines in MAG (Mobile Access Gateway) PMIP may connect, and every kind of APN disposed corresponding flow selector, these flow selectors use five-tuples to distinguish flow;
(PDN Gateway P-GW) and access service, can ask portable terminal, directly sends the flow of being correlated with if send data to the PDN Gateway of non-acquiescence APN correspondence;
The WLAN IAD (WLAN Access Gateway, MAG) the use traffic selector is analyzed the traffic characteristic of portable terminal, carry out the IP address transition according to analysis result after, the portable terminal flow is transferred to different P-GW.
In such scheme, the mode that realizes by a plurality of IP only is supported in VLAN or the TWAG MAC of each PDN correspondence of TWAG static configuration, and the configuration effort amount is big, and needs portable terminal to know each PDN, not easy care; Detect and need do grouping at MAG by the mode that an IP realizes, efficient is low, and needs to dispose each APN corresponding flow feature at TWAG in advance, and for example specific five-tuple needs static configuration, and the configuration effort amount is big, safeguards also very difficult.
Summary of the invention
The application can make portable terminal pass through to insert a plurality of networks simultaneously, and does not need to change two layers of processing logic of portable terminal, does not also need a large amount of configuration efforts, safeguards easily.
First aspect provides a kind of portable terminal to be connected to the method for a plurality of PDN networks by fixed network, this method comprises: after the gateway of portable terminal by fixed network is connected to a PDN network, in the time of need being linked into the 2nd PDN network by the gateway of fixed network, portable terminal sends DHCP (Dynamic Host ConfigurationProtocol to the gateway of fixed network, DHCP) request, the sign of carrying the 2nd PDN network in the DHCP request, a PDN network is different with the 2nd PDN network; The dhcp response information that the gateway of portable terminal reception fixed network is sent is carried the IP address of portable terminal in the 2nd PDN network in the dhcp response information.
In first kind of first aspect possible implementation, the sign of the 2nd PDN network is carried in the customer ID Client-Identifier attribute in the DHCP request.
In conjunction with in first kind of first aspect, the first aspect possible implementation any one, in second kind of possible implementation, after portable terminal receives the dhcp response information that the gateway of fixed network sends, also comprise: portable terminal preserve portable terminal in the 2nd PDN network the IP address and the mapping relations between the sign of the 2nd PDN network.
Second aspect provides a kind of portable terminal to be connected to the method for a plurality of PDN networks by fixed network, this method comprises: the DHCP request that the gateway mobile terminal receive of fixed network sends, the DHCP request is used for application and inserts the 2nd PDN network, after being connected to a PDN network, sends the gateway that DHCP request is portable terminal by fixed network, the sign of carrying the 2nd PDN network in the DHCP request, a PDN network is different with the 2nd PDN network; The gateway of fixed network parses the sign of the 2nd PDN network from the DHCP request; The gateway of fixed network obtains the IP address of portable terminal in the 2nd PDN network according to the sign of the 2nd PDN network; The gateway of fixed network sends dhcp response information to portable terminal, carries the IP address of portable terminal in the 2nd PDN network in the dhcp response information.
In first kind of second aspect possible implementation, the sign of the 2nd PDN network is carried in the customer ID Client-Identifier attribute in the DHCP request.
In conjunction with in first kind of second aspect, the second aspect possible implementation any one, in second kind of possible implementation, the gateway of fixed network is according to the sign of the 2nd PDN network, obtain the IP address of portable terminal in the 2nd PDN network, comprise: be designated NSWO(Non-Seamless WLAN Offloading when the 2nd PDN network) time, the gateway of fixed network is portable terminal distributing IP address; Otherwise, the gateway of fixed network sends session foundation request to the gateway of the 2nd PDN network, the gateway that the session request of setting up is used for request the 2nd PDN network is portable terminal distributing IP address, and the gateway of the 2nd PDN network is the corresponding network gateway of the sign of the 2nd PDN network; The gateway of fixed network receives session that the gateway of the 2nd PDN network sends and sets up and receive the response, and session is carried the IP address of portable terminal in the 2nd PDN network in setting up and receiveing the response.
In conjunction with in second kind of possible implementation of first kind of second aspect, second aspect possible implementation, second aspect any one, in the third possible implementation, after the gateway of fixed network sent dhcp response information to portable terminal, this method also comprised: the mapping relations between the sign of the IP address of the unique identification, portable terminal that the gateway of fixed network is preserved portable terminal in the 2nd PDN network, the 2nd PDN network.
The third aspect provides a kind of portable terminal, comprise: sending module, be used for after the gateway of portable terminal by fixed network is connected to a PDN network, in the time of need being linked into the 2nd PDN network by the gateway of fixed network, portable terminal sends the DHCP request to the gateway of fixed network, the sign of carrying the 2nd PDN network in the DHCP request, a PDN network is different with the 2nd PDN network; Receiver module for the dhcp response information that the gateway that receives fixed network is sent, carries the IP address of portable terminal in the 2nd PDN network in the dhcp response information.
In first kind of the third aspect possible implementation, the sign of the 2nd PDN network is carried in the customer ID Client-Identifier attribute in the DHCP request.
In conjunction with in first kind of the third aspect, the third aspect possible implementation any one, in second kind of possible implementation, also comprise memory, be used for to preserve the mapping relations of portable terminal between the sign of the IP address of the 2nd PDN network and the 2nd PDN network.
Fourth aspect provides a kind of gateway of fixed network, comprise: receiver module, be used for the DHCP request that mobile terminal receive sends, the DHCP request is used for application and inserts the 2nd PDN network, after being connected to a PDN network, sends the gateway that DHCP request is portable terminal by fixed network, the sign of carrying the 2nd PDN network in the DHCP request, a PDN network is different with the 2nd PDN network; Parsing module is for the sign that parses the 2nd PDN network from the DHCP request; The IP address acquisition module is used for the sign according to the 2nd PDN network, obtains the IP address of portable terminal in the 2nd PDN network; Sending module is used for sending dhcp response information to portable terminal, carries the IP address of portable terminal in the 2nd PDN network in the dhcp response information.
In first kind of fourth aspect possible implementation, the sign of the 2nd PDN network is carried in the customer ID Client-Identifier attribute in the DHCP request.
In conjunction with in first kind of fourth aspect, the fourth aspect possible implementation any one, in second kind of possible implementation, the IP address acquisition module is used for: be designated NSWO(Non-Seamless WLAN Offloading when the 2nd PDN network) time, be portable terminal distributing IP address; Otherwise, sending session foundation request to the gateway of the 2nd PDN network, it is portable terminal distributing IP address that the session request of setting up is used for asking the gateway of the 2nd PDN network, the gateway of the 2nd PDN network is the corresponding network gateway of the sign of the 2nd PDN network; Receiver module is further used for: receive session that the gateway of the 2nd PDN network sends and set up and receive the response, session is carried the IP address of portable terminal in the 2nd PDN network in setting up and receiveing the response.
In conjunction with in second kind of possible implementation of first kind of fourth aspect, fourth aspect possible implementation, fourth aspect any one, in the third possible implementation, gateway also comprises memory module, be used for to preserve the unique identification, portable terminal of the portable terminal mapping relations between the sign of the IP address of the 2nd PDN network, the 2nd PDN network.
By above-mentioned analysis as can be known, in the present invention, when subscriber equipment after the gateway by fixed network is connected to a PDN network, when needs insert the 2nd PDN network, gateway to fixed network sends a DHCP request of carrying the sign of the 2nd PDN network, the gateway of fixed network according to the IP address of sign acquisition portable terminal in the 2nd PDN network of the 2nd PDN network that carries in the DHCP request, and sends it to portable terminal after receiving this DHCP request.Portable terminal obtains can be connected into the 2nd PDN network by this IP address behind this IP address, thereby can make portable terminal insert a plurality of networks simultaneously, and does not need to change two layers of processing logic of portable terminal, does not also need a large amount of configuration efforts, safeguards easily.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, to do to introduce simply to the accompanying drawing of required use among the embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the network architecture diagram that the embodiment of the invention provides;
Fig. 2 is a kind of portable terminal that the embodiment of the invention provides is connected to the method for a plurality of PDN networks by fixed network flow chart;
Fig. 3 is another network architecture diagram that the embodiment of the invention provides;
Fig. 4 is a kind of portable terminal that the embodiment of the invention provides is connected to the method for a plurality of PDN networks by fixed network another flow chart;
Fig. 5 is the data format figure of the type of the Client-Identifier that provides of the embodiment of the invention;
Fig. 6 is the another network architecture diagram that the embodiment of the invention provides;
Fig. 7 is a kind of portable terminal that the embodiment of the invention provides is connected to the method for a plurality of PDN networks by fixed network data interaction figure;
Fig. 8 is a kind of portable terminal that the embodiment of the invention provides is connected to the method for a plurality of PDN networks by fixed network another data interaction figure;
Fig. 9 is the apparatus structure schematic diagram of the gateway of the portable terminal that provides of the embodiment of the invention and fixed network;
Figure 10 is another apparatus structure schematic diagram of the portable terminal that provides of the embodiment of the invention;
Figure 11 is another apparatus structure schematic diagram of the gateway of the fixed network that provides of the embodiment of the invention.
Embodiment
In below describing, in order to illustrate rather than in order limiting, to have proposed the detail such as particular system structure, interface, technology, in order to thoroughly understand the application.Yet, not it will be clear to one skilled in the art that in having other execution mode of these details and can realize the application yet.In other situation, omit the detailed description to well-known device, circuit and method, in order to avoid unnecessary details hinders the application's description.
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
At first see also Fig. 1, Fig. 1 is the network architecture diagram that the embodiment of the invention provides, portable terminal of the present invention specifically can be applicable on the network architecture shown in Figure 1 by the method that fixed network is connected to a plurality of PDN networks, as shown in Figure 1, portable terminal 101 is connected with the gateway 102 of fixed network, the gateway 102 of fixed network is connected with the gateway 103 of the 2nd PDN network (second packet data network), the gateway 103 of the 2nd PDN network is connected with the 2nd PDN network 104, wherein, has the data link annexation between two main bodys of the finger of connection described here, it can comprise wired or wireless connected mode, and can carry out bridge joint by third-party server or equipment between two main bodys.
And see also Fig. 2, Fig. 2 is a kind of portable terminal 101 that the embodiment of the invention provides is connected to the method for a plurality of PDN networks by fixed network 107 flow chart, wherein the described method of Fig. 2 is applied on the network architecture shown in Figure 1, as shown in Figure 2, portable terminal 101 of the present invention specifically may further comprise the steps by the method that fixed network 107 is connected to a plurality of PDN networks:
Step 201: after the gateway 102 of portable terminal 101 by fixed network is connected to a PDN network (first packet data network), in the time of need being linked into the 2nd PDN network 104 by the gateway 102 of fixed network, portable terminal 101 sends the DHCP request to the gateway 102 of fixed network.Wherein, the DHCP request is used for application and inserts the 2nd PDN network 104, the sign of carrying the 2nd PDN network 104 in the DHCP request, and a PDN network 106 is different with the 2nd PDN network 104.
Step 202: the DHCP request that gateway 102 mobile terminal receives 101 of fixed network send.
Step 203: the gateway 102 of fixed network parses the sign of the 2nd PDN network 104 from the DHCP request.
Step 204: the gateway 102 of fixed network obtains the IP address of portable terminal 101 in the 2nd PDN network 104 according to the sign of the 2nd PDN network 104.
Step 205: the gateway 102 of fixed network sends dhcp response information to portable terminal 101.Wherein, carry the IP address of portable terminal 101 in the 2nd PDN network 104 in the dhcp response information.
Step 206: the dhcp response information that the gateway 102 that portable terminal 101 receives fixed network is sent.
Alternatively, the sign of the 2nd PDN network 104 is carried at the customer ID Client-Identifier(client-definition in the DHCP request) in the attribute.
Alternatively, portable terminal 101 preserve portable terminals 101 in the 2nd PDN network 104 the IP address and the mapping relations between the sign of the 2nd PDN network 104.
It should be noted that, after the dhcp response information that the gateway 102 that portable terminal 101 receives fixed network is sent, owing to carry the IP address of portable terminal 101 in the 2nd PDN network 104 in the dhcp response information, therefore portable terminal 101 obtains the IP address of portable terminal 101 in the 2nd PDN network 104, thereby can insert the 2nd PDN network 104 by this IP address.
Therefore, when subscriber equipment after the gateway 102 by fixed network is connected to a PDN network 106, when needs insert the 2nd PDN network 104, gateway 102 to fixed network sends a DHCP request of carrying the sign of the 2nd PDN network 104, the gateway 102 of fixed network is after receiving this DHCP request, sign according to the 2nd PDN network 104 that carries in the DHCP request obtains the IP address of portable terminal 101 in the 2nd PDN network 104, and sends it to portable terminal 101.Portable terminal 101 obtains can be connected into the 2nd PDN network 104 by this IP address behind this IP address, thereby can make portable terminal 101 insert a plurality of networks simultaneously, and do not need to change two layers of processing logic of portable terminal 101, do not need a large amount of configuration efforts yet, safeguard easily.
Below see also Fig. 3, Fig. 3 is another network architecture diagram that the embodiment of the invention provides.As shown in Figure 3, it further is provided with gateway 105 and the 2nd PDN network 104 of fixed network 107, a PDN network on the basis of Fig. 1.
See also Fig. 4, Fig. 4 is a kind of portable terminal that the embodiment of the invention provides is connected to the method for a plurality of PDN networks by fixed network another flow chart, method wherein shown in Figure 4 is applied on the described network architecture of Fig. 3, as shown in Figure 4, portable terminal 101 of the present invention specifically may further comprise the steps by the method that fixed network 107 is connected to a plurality of PDN networks:
Step 301: after the gateway 102 of portable terminal 101 by fixed network was connected to a PDN network 106, in the time of need being linked into the 2nd PDN network 104 by the gateway 102 of fixed network, portable terminal 101 sent the DHCP request to the gateway 102 of fixed network.Wherein, the DHCP request is used for application and inserts the 2nd PDN network 104, the sign of carrying the 2nd PDN network 104 in the DHCP request, and a PDN network 106 is different with the 2nd PDN network 104.
Step 302: the DHCP request that gateway 102 mobile terminal receives 101 of fixed network send.
Step 303: the gateway 102 of fixed network parses the sign of the 2nd PDN network 104 from the DHCP request.
Step 304: the gateway 102 of fixed network judges whether the sign of the gateway 103 of the 2nd PDN network is NSWO(Non-Seamless WLAN Offloading, non-seamless WLAN unloading), if, execution in step 305, if not, execution in step 306.
Step 305: the gateway 102 of fixed network is portable terminal 101 distributing IP addresses.Wherein, this IP address can be applicable among the fixed network 107.Alternatively, in this step, the gateway 102 of fixed network also can send the IP address to the Dynamic Host Configuration Protocol server in the fixed network 107 and obtain request, Dynamic Host Configuration Protocol server obtains this IP address and obtains after the request, the distributing IP address, and the IP address that will comprise the IP address request of obtaining responds and to be sent to the gateway 102 of fixed network, thereby makes the gateway 102 of fixed network get access to the IP address that can be applicable in the fixed network 107.
Step 306: the gateway 102 of fixed network sends session foundation request to the gateway 103 of the 2nd PDN network.
Step 307: the gateway 103 of the 2nd PDN network produces session and sets up the gateway 102 of receiveing the response and being sent to fixed network.Wherein, carry the IP address of portable terminal 101 in the 2nd PDN network 104 that the gateway 103 of the 2nd PDN network distributes during session is set up and to be receiveed the response.
Step 308: the session that the gateway 103 that the gateway 102 of fixed network receives the 2nd PDN network is sent is set up and is receiveed the response.
Step 309: the gateway 102 of fixed network sends dhcp response information to portable terminal 101.Wherein, carry the IP address of portable terminal 101 in the 2nd PDN network 104 in the dhcp response information.
Step 310: the dhcp response information that the gateway 102 that portable terminal 101 receives fixed network is sent.
When subscriber equipment after the gateway 102 by fixed network is connected to a PDN network 106, when needs insert the 2nd PDN network 104, gateway 102 to fixed network sends a DHCP request of carrying the sign of the 2nd PDN network 104, the gateway 102 of fixed network is after receiving this DHCP request, sign according to the 2nd PDN network 104 that carries in the DHCP request obtains the IP address of portable terminal 101 in the 2nd PDN network 104, and sends it to portable terminal 101.Portable terminal 101 obtains can be connected into the 2nd PDN network 104 by this IP address behind this IP address, thereby can make portable terminal 101 insert a plurality of networks simultaneously, and do not need to change two layers of processing logic of portable terminal 101, do not need a large amount of configuration efforts yet, safeguard easily.
And, in the present embodiment, in step 304, the gateway 102 of fixed network further judges whether the sign of the gateway 103 of the 2nd PDN network is NSWO, and be directly to distribute portable terminals 101 in the IP address of fixed network 107 for portable terminal 101 during for NSWO in the sign of the gateway 103 of the 2nd PDN network, can make portable terminal 101 be linked into fixed network 107 by this IP address, thereby realize that portable terminal 101 inserts a PDN network 106 and fixed network 107 simultaneously.
Alternatively, in an embodiment of the present invention, the sign of the 2nd PDN network 104 is carried in the customer ID Client-Identifier attribute in the DHCP request.In the prior art, Client-Identifier is used for transmitting an explicit client identification to Dynamic Host Configuration Protocol server (corresponding to " gateway 103 of the 2nd PDN network " described in the present invention or " gateway 102 of fixed network ").Dhcp client (corresponding to " portable terminal 101 " described in the present invention) uses this option to go to specify their unique signs.Dynamic Host Configuration Protocol server uses this value to go to their binding data storehouse, address of index.For all clients in a management domain, this value need be unique.
Client-Identifier is regarded opaque object by Dynamic Host Configuration Protocol server in the present DHCP standard, the present invention expands original Client-Identifier, Dynamic Host Configuration Protocol server needs to resolve " Client-Identifier ", its concrete form as shown in Figure 5, wherein Fig. 5 is the data format figure of the type of the Client-Identifier that provides of the embodiment of the invention.
In general, the type of Client-Identifier of the prior art is that parameter is represented with the MAC Address of portable terminal 101, and the Client-Identifier among the present invention need apply for a new type t1, this new type t1 represents with the sign of the 2nd PDN network 104, the sign of the 2nd PDN network 104 can be the MAC Address+portable terminal 101 of portable terminal 101 in the IP address of a PDN network 106, and 6 bytes of the MAC Address of portable terminal 101 needs (m1～m6).Portable terminal 101 the form of the IP address of a PDN network 106 according to the definition of 3GPP TS23.003 (a1, a2 ...), its variable-length, maximum 100 bytes.
New type t1 can trigger Dynamic Host Configuration Protocol server and resolve Client-Identifier, thereby obtains the IP address of portable terminal 101 in the 2nd PDN network 104.Though the present invention has changed the form of Client-Identifier, still observe DHCP protocol signaling flow process, so the embodiment of the invention still with original flow process compatibility.
It should be noted that in above-described scheme the sign of the 2nd PDN network 104 and MAC are carried among the Client-Identifier, corresponding gateway can be distinguished the requestor according to Client-Identifier.But those skilled in the art it should be noted that, in optional embodiment of the present invention, the sign of the 2nd PDN network 104 can be set to be carried in other extended attributes in the DHCP request, and corresponding gateway is distinguished the requestor by the MAC Address in the DHCP request;
Perhaps, in optional embodiment of the present invention, the sign of the 2nd PDN network 104 more can be set to be carried in other extended attributes in the DHCP request, Client-Identifier uses unique data (as generating at random in the DHCP request, but be not MAC Address), corresponding gateway is distinguished the requestor by this unique data.
In the technical scheme of the present invention, the portable terminal 101 that the gateway 102 of fixed network uses the gateway 105 of a PDN network that has inserted to distribute is applied for a new Client-Identifier as parameter in the MAC Address of the IP address+portable terminal 101 of a PDN network 106 type, make Dynamic Host Configuration Protocol server resolve the Client-Identifier with new type, thereby be that portable terminal 101 distributes a new IP address.It should be noted that in the present invention, also do not get rid of the implementation of other parameter, for example apply for the type of a new Client-Identifier according to purpose IP, be not restricted herein.
Below see also Fig. 6 to 8, Fig. 6 is the another network architecture diagram that the embodiment of the invention provides.Fig. 7 is a kind of portable terminal that the embodiment of the invention provides is connected to the method for a plurality of PDN networks by fixed network 410 data interaction figure.Fig. 8 is a kind of portable terminal that the embodiment of the invention provides is connected to the method for a plurality of PDN networks by fixed network 410 another data interaction figure.Wherein Fig. 7 and data exchange ways shown in Figure 8 are based on the described network architecture of Fig. 6.
At first see also Fig. 6, in the network architecture shown in Figure 6, comprise portable terminal (User Equipment, subscriber equipment), RG/AP(Residential Gateway/Access Point, home gateway/Network Access Point), BNG/TWAG(Broadband Network Gateway/Trusted WLAN Access Gateway, wideband network gateway/believable WLAN IAD), 3GPPAAA (3rd Generation Partnership Project Authentication, Authorization and Accounting, third generation partner program authentication, the authorization and accounting server), HSS(Home Subscriber Server, the ownership place client server), the gateway 406 of the one PDN network, the one PDN network 407, the gateway 408 of the 2nd PDN network, the 2nd PDN network 409 and fixed network 410.
Wherein, portable terminal is an example of portable terminal of the present invention, and BNG/TWAG is an example of the gateway of fixed network 410 of the present invention.
And RG/AP is operated in bridge mode, and itself and portable terminal carry out wireless connections, carries out wired connection with BNG/TWAG, is connected so that set up the data interaction link between portable terminal and the BNG/TWAG.
BNG/TWAG is connected with fixed network 410, can be used as the gateway of fixed network 410, and BNG/TWAG more is connected with the gateway 406 of a PDN network and the gateway 408 of the 2nd PDN network in addition.
And BNG/TWAG can be connected with 3GP P AAA, and 3GPP AAA is used for according to the MAC Address of portable terminal portable terminal being carried out the authentication that 3GPP serves, authorization and accounting service.
Below see also Fig. 7, as described in Figure 7, a kind of portable terminal that the embodiment of the invention provides may further comprise the steps by the method that fixed network is connected to a plurality of PDN networks:
Step 1: carry out the EAP-AKA verification process between portable terminal, RG/AP, BNG/TWAG, the 3GPP AAA, in verification process, MAC and the IMSI of BNG/TWAG binding portable terminal.Wherein, the EAP-AKA authentication is prior art, and emphasis of the present invention does not lie in this, does not therefore give unnecessary details.
Step 2: portable terminal sends DHCP request to RG/AP.Wherein the MAC Address with portable terminal is that parameter is set to the first kind among the Client-Identifier of DHCP request.
Step 3:RG/AP is forwarded to BNG/TWAG with DHCP request.
After step 4:BNG/TWAG receives DHCP request, send session and set up request to the gateway 406 of a PDN network.
Step 5: the gateway 406 of a PDN network sends session and sets up echo message to BNG/TWAG after receiving and sending session foundation request.After wherein the gateway 406 of a PDN network receives and sends session and set up request, can distribute an IP address, an IP address be portable terminal in the IP address of a PDN network 407, session is set up echo message and is carried an IP address.
Step 6:BNG/TWAG preserves the corresponding relation of the MAC Address of an IP address and portable terminal.
Step 7:BNG/TWAG returns DHCP request echo message to RG/AP.Wherein DHCP request echo message carries an IP address.
Step 8:RG/AP is forwarded to portable terminal with DHCP request echo message.
Step 9: portable terminal obtains an IP address and preserves from DHCP request echo message.So far, portable terminal gets access to an IP address and since an IP address be portable terminal in the IP address of a PDN network 407, therefore, this moment portable terminal can be connected to a PDN network 407.
Step 10: portable terminal sends the 2nd DHCP request to RG/AP.Wherein be provided with the sign of the 2nd PDN network 409 in the 2nd DHCP request, particularly, the sign of the 2nd PDN network 409 is arranged among the Client-Identifier of the 2nd DHCP request, and it comprises MAC Address and an IP address of portable terminal.
Step 11:RG/AP is forwarded to BNG/TWAG with the 2nd DHCP request.
Step 12:BNG/TWAG resolves the 2nd DHCP request, and the 2nd PDN network 409 that parses of hypothesis be designated non-NSWO.Particularly, in this step, whether set judges whether the sign of the 2nd PDN network 409 is non-NSWO to corresponding flag bit that can be by judging the 2nd DHCP request.And in this step, BNG/TWAG parses MAC Address and an IP address that comprises portable terminal among the Client-Identifier of the 2nd DHCP request.
Step 13:BNG/TWAG sends session foundation request to the gateway 408 of the 2nd PDN network.
Step 14: after the gateway 408 of the 2nd PDN network receives that request is set up in session, send the session request of setting up to BNG/TWAG and receive the response.Particularly, the gateway 408 of the 2nd PDN network distributes two an IP address different with an IP address after receiving that request is set up in session, and wherein the 2nd IP address is the IP address of portable terminal in the 2nd PDN network 409.And the session request of setting up carries the 2nd IP address in receiveing the response.
Corresponding relation between the sign of step 15:BNG/TWAG preservation MAC, the 2nd IP address and the 2nd PDN network 409.
Step 16:BNG/TWAG sends dhcp response information to RG/AP.Carry the 2nd IP address in the wherein dhcp response information.
Step 17:RG/AP is forwarded to portable terminal with dhcp response information.
Step 18: portable terminal is preserved the mapping relations between the sign of the 2nd IP address and the 2nd PDN network 409.So far, portable terminal gets access to the 2nd IP address and since the 2nd IP address be portable terminal in the IP address of the 2nd PDN network 409, therefore, this moment portable terminal can be connected to the 2nd PDN network 409.
Specifically introduced the mode that portable terminal inserts a PDN network 407 in step 1 to 9, specifically introduced the mode that portable terminal inserts the 2nd PDN network 409 in step 10 to 18, particularly, in step 1 to 9, trigger by the DHCP agreement, MAC Address according to portable terminal obtains an IP address, in step 10 to 17, triggering by the DHCP agreement, obtain the 2nd IP address according to the MAC Address of portable terminal and the binding of an IP address, thereby make portable terminal have two IP, be respectively applied to insert two different APN networks.
At this moment the BNG/TWAG flow that can connect at certain PDN according to the flow of different IP address maintenance portable terminals or portable terminal.
When subscriber equipment after the gateway by fixed network 410 is connected to a PDN network 407, when needs insert the 2nd PDN network 409, gateway to fixed network 410 sends a DHCP request of carrying the sign of the 2nd PDN network 409, the gateway of fixed network 410 is after receiving this DHCP request, sign according to the 2nd PDN network 409 that carries in the DHCP request obtains the IP address of portable terminal in the 2nd PDN network 409, and sends it to portable terminal.Portable terminal obtains can be connected into the 2nd PDN network 409 by this IP address behind this IP address, thereby can make portable terminal insert a plurality of networks simultaneously, and do not need to change two layers of processing logic of portable terminal, do not need a large amount of configuration efforts yet, safeguard easily.
Below see also Fig. 8, as described in Figure 8, a kind of portable terminal that the embodiment of the invention provides may further comprise the steps by the method that fixed network is connected to a plurality of PDN networks:
Step 1: carry out the EAP-AKA verification process between portable terminal, RG/AP, BNG/TWAG, the 3GPP AAA, in verification process, MAC and the IMSI of BNG/TWAG binding portable terminal.Wherein, the EAP-AKA authentication is prior art, and emphasis of the present invention does not lie in this, does not therefore give unnecessary details.
Step 2: portable terminal sends DHCP request to RG/AP.Wherein be provided with the MAC Address of portable terminal among the Client-Identifier of DHCP request.
Step 3:RG/AP is forwarded to BNG/TWAG with DHCP request.
After step 4:BNG/TWAG receives DHCP request, send session and set up request to the gateway 406 of a PDN network.
Step 5: the gateway 406 of a PDN network sends session and sets up echo message to BNG/TWAG after receiving and sending session foundation request.After wherein the gateway 406 of a PDN network receives and sends session and set up request, can distribute an IP address, an IP address be portable terminal in the IP address of a PDN network 407, session is set up echo message and is carried an IP address.
Step 6:BNG/TWAG preserves the corresponding relation of an IP address and MAC.
Step 7:BNG/TWAG returns DHCP request echo message to RG/AP.Wherein DHCP request echo message carries an IP address.
Step 8:RG/AP is forwarded to UE with DHCP request echo message.
Step 9: portable terminal obtains an IP address and preserves from DHCP request echo message.So far, portable terminal gets access to an IP address and since an IP address be portable terminal in the IP address of a PDN network 407, therefore, this moment portable terminal can be connected to a PDN network 407.
Step 10: portable terminal sends the 2nd DHCP request to RG/AP.Wherein be provided with the sign of the 2nd PDN network 409 in the 2nd DHCP request, particularly, the sign of the 2nd PDN network 409 is arranged among the Client-Identifier of the 2nd DHCP request, and it comprises MAC Address and an IP address of portable terminal.
Step 11:RG/AP is forwarded to BNG/TWAG with the 2nd DHCP request.
Step 12:BNG/TWAG resolves the 2nd DHCP request, and the 2nd PDN network 409 that parses of hypothesis be designated NSWO.Particularly, in this step, whether set judges whether the sign of the 2nd PDN network 409 is NSWO to corresponding flag bit that can be by judging the 2nd DHCP request.And in this step, BNG/TWAG parses MAC Address and an IP address of portable terminal among the Client-Identifier of the 2nd DHCP request.
Step 13:BNG/TWAG distributes the two IP address different with an IP address according to the Client-Identifier of the 2nd DHCP request.Wherein the 2nd IP address is the IP address of UE in fixed network 410.
Corresponding relation between the sign of step 14:BNG/TWAG preservation MAC, the 2nd IP address and the 2nd PDN network 409.
Step 15:BNG/TWAG sends dhcp response information to RG/AP.Carry the 2nd IP address in the wherein dhcp response information.
Step 16:RG/AP is forwarded to portable terminal with dhcp response information.
Step 17: portable terminal is preserved the mapping relations between the sign of the 2nd IP address and the 2nd PDN network 409.So far, portable terminal gets access to the 2nd IP address and since the 2nd IP address be portable terminal in the IP address of fixed network 410, therefore, this moment portable terminal can be connected to fixed network 410.
Specifically introduced the mode that portable terminal inserts a PDN network 407 in step 1 to 9, specifically introduced the mode that portable terminal inserts the 2nd PDN network 409 in step 10 to 17, particularly, in step 1 to 9, trigger by the DHCP agreement, MAC Address according to portable terminal obtains an IP address, in step 10 to 17, triggering by the DHCP agreement, obtain the 2nd IP address according to the MAC Address of portable terminal and the binding of an IP address, thereby make portable terminal have two IP, be respectively applied to insert an APN network and fixed network 410.
At this moment the BNG/TWAG flow that can connect at certain PDN according to the flow of different IP address maintenance portable terminals or portable terminal.
Therefore, when subscriber equipment after the gateway by fixed network 410 is connected to a PDN network 407, when needs insert the 2nd PDN network 409, gateway to fixed network 410 sends a DHCP request of carrying the sign of the 2nd PDN network 409, the gateway of fixed network 410 is after receiving this DHCP request, sign according to the 2nd PDN network 409 that carries in the DHCP request obtains the IP address of portable terminal in the 2nd PDN network 409, and sends it to portable terminal.Portable terminal obtains can be connected into the 2nd PDN network 409 by this IP address behind this IP address, thereby can make portable terminal insert a plurality of networks simultaneously, and do not need to change two layers of processing logic of portable terminal, do not need a large amount of configuration efforts yet, safeguard easily.
Below see also Fig. 9, Fig. 9 is the apparatus structure schematic diagram of the gateway of the portable terminal that provides of the embodiment of the invention and fixed network.As shown in Figure 9, portable terminal 101 of the present invention comprises sending module 501 and receiver module 502, wherein:
Sending module 501, be used for after the gateway of portable terminal 101 by fixed network is connected to a PDN network, in the time of need being linked into the 2nd PDN network by the gateway of fixed network, gateway to fixed network sends the DHCP request, the sign of carrying the 2nd PDN network in the DHCP request, a PDN network is different with the 2nd PDN network;
Alternatively, the sign of the 2nd PDN network is carried in the customer ID Client-Identifier attribute in the DHCP request.
Alternatively, portable terminal 101 further comprises memory module 503, and memory module 503 is used for preserving the mapping relations of portable terminal 101 between the sign of the IP address of the 2nd PDN network and the 2nd PDN network.
Please further referring to Fig. 9, the gateway 102 of fixed network of the present invention comprises receiver module 601, parsing module 602, IP address acquisition module 603 and sending module 605, wherein:
Parsing module 602 is for the sign that parses the 2nd PDN network from the DHCP request;
IP address acquisition module 603 is used for the sign according to the 2nd PDN network, obtains the IP address of portable terminal 101 in the 2nd PDN network;
Sending module 605 is used for sending dhcp response information to portable terminal 101, carries the IP address of portable terminal 101 in the 2nd PDN network in the dhcp response information.
Alternatively, the sign of the 2nd PDN network is carried in the customer ID Client-Identifier attribute in the DHCP request.
Alternatively, IP address acquisition module 603 is used for: be designated NSWO(Non-Seamless WLAN Offloading when the 2nd PDN network) time, be portable terminal 101 distributing IP addresses; Otherwise, sending session foundation request to the gateway of the 2nd PDN network, it is portable terminal distributing IP address that the session request of setting up is used for asking the gateway of the 2nd PDN network, the gateway of the 2nd PDN network is the corresponding network gateway of the sign of the 2nd PDN network; Receiver module 601 is further used for: receive session that the gateway of the 2nd PDN network sends and set up and receive the response, session is carried the IP address of portable terminal in the 2nd PDN network in setting up and receiveing the response.
Alternatively, the gateway 102 of fixed network also comprises memory module 604, and memory module 604 is used for: preserve the unique identification, portable terminal 101 of portable terminal 101 mapping relations between the sign of the IP address of the 2nd PDN network, the 2nd PDN network.
Therefore, when subscriber equipment after the gateway by fixed network is connected to a PDN network, when needs insert the 2nd PDN network, gateway to fixed network sends a DHCP request of carrying the sign of the 2nd PDN network, the gateway of fixed network is after receiving this DHCP request, sign according to the 2nd PDN network that carries in the DHCP request obtains the IP address of portable terminal in the 2nd PDN network, and sends it to portable terminal.Portable terminal obtains can be connected into the 2nd PDN network by this IP address behind this IP address, thereby can make portable terminal insert a plurality of networks simultaneously, and does not need to change two layers of processing logic of portable terminal, does not also need a large amount of configuration efforts, safeguards easily.
Below see also Figure 10, Figure 10 is another apparatus structure schematic diagram of the portable terminal that provides of the embodiment of the invention.As shown in figure 10,
Alternatively, the sign of the 2nd PDN network is carried in the customer ID Client-Identifier attribute in the DHCP request.
Alternatively, memory 701 be further used for preserving portable terminal in the 2nd PDN network the IP address and the mapping relations between the sign of the 2nd PDN network.
Figure 10 is another apparatus structure schematic diagram of the gateway of the fixed network that provides of the embodiment of the invention.As shown in figure 10, the gateway 102 of fixed network of the present invention comprises memory 801, processor 802, interface 803 and bus 804, and memory 801, processor 802 and interface 803 connect by bus 804, to carry out data communication.Wherein:
Alternatively, the sign of the 2nd PDN network is carried in the customer ID Client-Identifier attribute in the DHCP request.
Alternatively, said procedure is further used for: whether the sign of judging the 2nd PDN network is NSWO(Non-Seamless WLAN Offloading), be designated NSWO(Non-Seamless WLAN Offloading when the 2nd PDN network) time, be portable terminal distributing IP address; Otherwise, notify described interface to send session foundation request to the gateway of the 2nd PDN network, the gateway that the session request of setting up is used for request the 2nd PDN network is portable terminal distributing IP address, and the gateway of the 2nd PDN network is the corresponding network gateway of the sign of the 2nd PDN network; This interface is further used for: receive session that the gateway of the 2nd PDN network sends and set up and receive the response, session is carried the IP address of portable terminal in the 2nd PDN network in setting up and receiveing the response.
Alternatively, memory 801 is further used for: the mapping relations between the sign of the IP address of the unique identification, portable terminal of preserving portable terminal in the 2nd PDN network, the 2nd PDN network.
It should be noted that in optional embodiment of the present invention a PDN network also can be fixed network, namely portable terminal at first can be linked in the fixed network, and then the 2nd PDN network that is linked into.Therefore, by above disclosure, the present invention when subscriber equipment after the gateway by fixed network is connected to a PDN network, when needs insert the 2nd PDN network, gateway to fixed network sends a DHCP request of carrying the sign of the 2nd PDN network, the gateway of fixed network according to the IP address of sign acquisition portable terminal in the 2nd PDN network of the 2nd PDN network that carries in the DHCP request, and sends it to portable terminal after receiving this DHCP request.Portable terminal obtains can be connected into the 2nd PDN network by this IP address behind this IP address, thereby can make portable terminal insert a plurality of networks simultaneously, and does not need to change two layers of processing logic of portable terminal, does not also need a large amount of configuration efforts, safeguards easily.
In the several embodiments that the application provides, should be understood that, disclosed system, apparatus and method can realize by other mode.For example, device embodiments described above only is schematic, for example, the division of described module or unit, only be that a kind of logic function is divided, during actual the realization other dividing mode can be arranged, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, the shown or coupling each other discussed or directly to be coupled or to communicate to connect can be by some interfaces, the indirect coupling of device or unit or communicate to connect can be electrically, machinery or other form.
Described unit as separating component explanation can or can not be physically to separate also, and the parts that show as the unit can be or can not be physical locations also, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select wherein some or all of unit to realize the purpose of present embodiment scheme according to the actual needs.
In addition, each functional unit in each execution mode of the application can be integrated in the processing unit, also can be that the independent physics in each unit exists, and also can be integrated in the unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, also can adopt the form of SFU software functional unit to realize.
If described integrated unit is realized with the form of SFU software functional unit and during as independently production marketing or use, can be stored in the computer read/write memory medium.Based on such understanding, part or all or part of of this technical scheme that the application's technical scheme contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, the perhaps network equipment etc.) or processor (processor) carry out all or part of step of the described method of each execution mode of the application.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD.
Claims (14)
1. a portable terminal is connected to the method for a plurality of PDN networks by fixed network, it is characterized in that described method comprises:
After the gateway of described portable terminal by fixed network is connected to the first packet data network PDN network, in the time of need being linked into the 2nd PDN network by the gateway of described fixed network, described portable terminal sends the dynamic host configuration protocol DHCP request to the gateway of described fixed network, the sign of carrying described the 2nd PDN network in the described DHCP request, a described PDN network is different with described the 2nd PDN network;
Described portable terminal receives the dhcp response information that the gateway of described fixed network is sent, and carries the IP address of described portable terminal in described the 2nd PDN network in the described dhcp response information.
2. method according to claim 1 is characterized in that, the sign of described the 2nd PDN network is carried in the customer ID Client-Identifier attribute in the described DHCP request.
3. method according to claim 1 and 2 is characterized in that, after described portable terminal receives the dhcp response information that the gateway of described fixed network sends, also comprises:
Described portable terminal preserve described portable terminal in described the 2nd PDN network the IP address and the mapping relations between the sign of described the 2nd PDN network.
4. a portable terminal is connected to the method for a plurality of PDN networks by fixed network, it is characterized in that described method comprises:
The dynamic host configuration protocol DHCP request that the gateway mobile terminal receive of fixed network sends, described DHCP request is used for application and inserts the second packet data network PDN network, after being connected to a PDN network, sends the gateway that described DHCP request is described portable terminal by described fixed network, the sign of carrying described the 2nd PDN network in the described DHCP request, a described PDN network is different with described the 2nd PDN network;
The gateway of described fixed network parses the sign of described the 2nd PDN network from described DHCP request;
The gateway of described fixed network obtains the IP address of described portable terminal in described the 2nd PDN network according to the sign of described the 2nd PDN network;
The gateway of described fixed network sends dhcp response information to described portable terminal, carries the IP address of described portable terminal in described the 2nd PDN network in the described dhcp response information.
5. method according to claim 4 is characterized in that, the sign of described the 2nd PDN network is carried in the customer ID Client-Identifier attribute in the described DHCP request.
6. according to claim 4 or 5 described methods, it is characterized in that the gateway of described fixed network obtains the IP address of described portable terminal in described the 2nd PDN network according to the sign of described the 2nd PDN network, comprising:
Be designated NSWO(Non-Seamless WLAN Offloading when described the 2nd PDN network) time, the gateway of described fixed network is that described portable terminal distributes the IP address of described portable terminal in described fixed network;
Otherwise, the gateway of described fixed network sends session foundation request to the gateway of the 2nd PDN network, the gateway that the described session request of setting up is used for described the 2nd PDN network of request is that described portable terminal distributes described portable terminal in the IP address of described the 2nd PDN network, and the gateway of described the 2nd PDN network is the corresponding network gateway of the sign of the 2nd PDN network; The gateway of described fixed network receives session that the gateway of described the 2nd PDN network sends and sets up and receive the response, and described session is carried the IP address of described portable terminal in described the 2nd PDN network in setting up and receiveing the response.
7. according to the arbitrary described method of claim 4-6, it is characterized in that after the gateway of described fixed network sent dhcp response information to described portable terminal, described method also comprised:
The gateway of described fixed network is preserved the mapping relations between the sign of IP address in described the 2nd PDN network of the unique identification of described portable terminal, described portable terminal, described the 2nd PDN network.
8. a portable terminal is characterized in that, comprising:
Sending module, be used for after the gateway of described portable terminal by fixed network is connected to the first packet data network PDN network, in the time of need being linked into the 2nd PDN network by the gateway of described fixed network, described portable terminal sends the dynamic host configuration protocol DHCP request to the gateway of described fixed network, the sign of carrying described the 2nd PDN network in the described DHCP request, a described PDN network is different with described the 2nd PDN network;
Receiver module for the dhcp response information that the gateway that receives described fixed network is sent, carries the IP address of described portable terminal in described the 2nd PDN network in the described dhcp response information.
9. portable terminal according to claim 8 is characterized in that, the sign of described the 2nd PDN network is carried in the customer ID Client-Identifier attribute in the described DHCP request.
10. according to Claim 8 or 9 described portable terminals, it is characterized in that, also comprise memory module, be used for preserving the mapping relations of described portable terminal between the sign of the IP address of described the 2nd PDN network and described the 2nd PDN network.
11. the gateway of a fixed network is characterized in that, comprising:
Receiver module, be used for the dynamic host configuration protocol DHCP request that mobile terminal receive sends, described DHCP request is used for application and inserts the second packet data network PDN network, after being connected to a PDN network, sends the gateway that described DHCP request is described portable terminal by described fixed network, the sign of carrying described the 2nd PDN network in the described DHCP request, a described PDN network is different with described the 2nd PDN network;
Parsing module is for the sign that parses described the 2nd PDN network from described DHCP request;
The IP address acquisition module is used for the sign according to described the 2nd PDN network, obtains the IP address of described portable terminal in described the 2nd PDN network;
Sending module is used for sending dhcp response information to described portable terminal, carries the IP address of described portable terminal in described the 2nd PDN network in the described dhcp response information.
12. gateway according to claim 11 is characterized in that, the sign of described the 2nd PDN network is carried in the customer ID Client-Identifier attribute in the described DHCP request.
13. according to claim 11 or 12 described gateways, it is characterized in that,
Described IP address acquisition module is used for:
Be designated NSWO(Non-Seamless WLAN Offloading when described the 2nd PDN network) time, be described portable terminal distributing IP address;
Otherwise, gateway to the 2nd PDN network sends session foundation request, the gateway that the described session request of setting up is used for described the 2nd PDN network of request is described portable terminal distributing IP address, and the gateway of described the 2nd PDN network is the corresponding network gateway of the sign of the 2nd PDN network;
Described receiver module is further used for:
Receive session that the gateway of described the 2nd PDN network sends and set up and receive the response, described session is carried the IP address of described portable terminal in described the 2nd PDN network in setting up and receiveing the response.
14. according to the arbitrary described gateway of claim 11-13, it is characterized in that described gateway also comprises memory module, described memory module is used for:
Preserve the mapping relations between the sign of IP address in described the 2nd PDN network of the unique identification of described portable terminal, described portable terminal, described the 2nd PDN network.
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