CN101635915B - Method and device for selecting packet data network (PDN) - Google Patents
Method and device for selecting packet data network (PDN) Download PDFInfo
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- CN101635915B CN101635915B CN200810142544A CN200810142544A CN101635915B CN 101635915 B CN101635915 B CN 101635915B CN 200810142544 A CN200810142544 A CN 200810142544A CN 200810142544 A CN200810142544 A CN 200810142544A CN 101635915 B CN101635915 B CN 101635915B
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Abstract
The embodiment of the invention discloses a method and a device for selecting a packet data network (PDN) to realize selection of new PDNs by a terminal. The method comprises the following steps: receiving the PDN selection information from the terminal; sending the PDN authorization request information to an authentication device; the PDN authorization request information carries the PDN selection information so that the authentication device selects a PDN gateway (GW) for the terminal according to the PDN subscription information and the PDN selection information from the terminal; the above information is stored in the authentication device. The device comprises a receiving module, a storing module and a PDN selection function module.
Description
Technical field
The invention belongs to communication technical field, relate in particular to a kind of method and apparatus of selecting packet data network.
Background technology
3GPP (3rd Generation Partnership Project; Third generation partner program) and 3GPP2 (3rd Generation Partnership Project 2; 3rd Generation Partnership Project two), WiMAX (Worldwide Interoperability for Microwave Access, the microwave interoperability is inserted in the whole world) etc. is the mainstream standard of the existing third generation communication technology.Intercommunication between several kinds of standard networks is the indispensable branch of technical development with professional sharing always.
From non-3GPP (non-3rd Generation Partnership Project; Non-third generation partner program) connecting system is linked into EPC (Evolved Packet Core; The evolved packet system core net) in the process, MS (Mobile Station, portable terminal)/UE (User Equipment; Subscriber equipment) need set up PDN (Packet Date Network, packet data network) with network connects.The corresponding different service of PDN provides network, enjoys different service thereby MS/UE can insert different PDN through EPC.In the prior art; Said MS/UE and network are set up the flow process that PDN is connected: in initial access process, HSS (Home Subscriber Server, home subscriber servers) offers MME (Mobile Management Entity with the PDN information that the user subscribes to; Mobile management entity); The corresponding one group of PDN subscription context information of PDN of wherein each user being subscribed to, every group of PDN subscription context information mainly comprises: PDN GW (PDN Gate Way, PDN Gateway) sign and an APN (Access Point Name; APN); Or APN and an indication corresponding with this APN, said indication indicates that PDN GW address should be distributed still the PLMN by the local to distribute by the PLMN (Public Land MobileNetwork, Public Land Mobile Network) on visit ground; APN comprises two parts, network identity and operator's sign, and APN is that network is the important parameter that MS/UE distributes PDN GW; HSS can indicate the subscription context which PDN subscription context is an acquiescence in offering the PDN subscription context information of MME simultaneously.In the access procedure of prior art, after access authentication was accomplished, the PDN context that the direct selection of PDN subscription information that MME provides according to HSS is indicated acquiescence was that MS/UE distributes PDN GW, and the connection between foundation and the acquiescence PDN.When MS/UE need connect with the PDNGW of non-acquiescence, need to initiate the foundation of additional PDN (newly-increased PDN).
The inventor finds; At existing 3GPP (3rd Generation Partnership Project; Third generation partner program) in the definition, when the non-3GPP system was linked into EPC, MS/UE was at PMIP (ProxyMobile Internet Protocol; Proxy mobile internet protocol) only mentions MS/UE in the flow process that request additional PDN connects under the pattern and will bring network side the APN of request; But do not have how its APN that is asked of informing network side of clear and definite MS/UE, promptly do not have clear and definite concrete step or message, also not clearly by which main body how for selecting said additional PDN in the terminal.Therefore, be the MS/UE that at all can't realize to the selection of additional PDN in fact according to the description of existing protocol.
Summary of the invention
The embodiment of the invention discloses a kind of method and apparatus of selecting packet data network, to realize the selection of terminal to newly-increased packet data network.
A kind of method of selecting packet data network is characterized in that, this method comprises:
Receive the PDN selection information of self terminal;
Send the PDN authorization request message to authentication device; Carry said PDN in the said PDN authorization request message and select information, so that said authentication device is that grouped data network gateway PDN GW is selected at said terminal according to the PDN subscription information and the said PDN selection information at the said terminal of self preserving.
A kind of method of selecting packet data network is characterized in that, this method comprises:
Receive Router Solicitation message or the DHCP Solicit message or the DHCPRequest message of self terminal, carry PDN selection information in said Router Solicitation message or DHCP Solicit message or the DHCPRequest message or comprise the network access Identifier NAI that said PDN selects information;
PDN subscription information and said PDN selection information according to the said terminal of self preserving are that grouped data network gateway PDN GW is selected at said terminal.
A kind of device of assisted Selection packet data network comprises:
First receiver module: be used to receive the PDN of self terminal to select information;
First sending module: be used for sending the PDN authorization request message, carry said PDN in the said PDN authorization request message and select information to authentication device.
A kind of device of selecting packet data network comprises:
Receiver module: be used to receive carrying PDN selection information or comprising Router Solicitation message or DHCP Solicit message or the DHCP Request message that said PDN selects the network access Identifier NAI of information of self terminal, perhaps select the PDN authorization request message of information from the said PDN of carrying of anchor ASN-GW;
Preserve module: the PDN subscription information that is used to preserve said terminal;
The PDN selection functional module: be used for according to the said PDN from said receiver module select information and said be that grouped data network gateway PDN GW is selected at said terminal from the said PDN subscription information of preserving module.
Through using embodiment of the invention disclosed method and device, PDN that can the receiving terminal report selects information, and selecting information and PDN subscription information according to said PDN is that PDN GW is selected at the terminal, makes the selection of MS/UE realization to packet data network.
Description of drawings
Fig. 1 is the method flow diagram of the disclosed selection packet data network of the embodiment of the invention;
Fig. 2 is the method flow diagram of the disclosed selection packet data network of the embodiment of the invention;
Fig. 3 is the method flow diagram of the disclosed selection packet data network of the embodiment of the invention;
Fig. 4 is the apparatus structure sketch map of the disclosed assisted Selection packet data network of the embodiment of the invention;
Fig. 5 is the apparatus structure sketch map of the disclosed selection packet data network of the embodiment of the invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, the specific embodiment of the invention is done further to describe in detail below in conjunction with accompanying drawing.
Present embodiment discloses a kind of method of selecting packet data network.
Present embodiment is an example through the scene that inserts EPC with the WiMAX Access Network, and the method for terminal selection Additional PDN under the PMIPv6 pattern is described.Said method is as shown in Figure 1, and concrete steps are following:
Step 101, MS/UE are linked into 3GPP EPC network through WiMAX ASN access network, and foundation and acquiescence PDN are connected, the MIP tunnel between foundation and the PDN GW (diagram PDN GW1).Said process is a prior art, repeats no more here.
Step 102, MS/UE send RouterSolicitation message to the MAG that is positioned at Anchor GW (anchor ASN-GW) (Mobile AccessGateway, Mobile Access Gateway)/AR (Access Router, couple in router).(generally, it is generally acknowledged that said MAG and said AR are positioned at same entity.) carry PDN in the said Router Solicitation message and select information; Perhaps, optional, carry NAI (Network Access Identifier in the said RouterSolicitation message; Network access Identifier), comprise said PDN among the said NAI and select information.Said PDN selection information is APN (Access PointName, APN) or PDN domain name, perhaps contains the indication information of said APN or PDN domain name.For clarity sake, the mark of method shown in Figure 1 is example with APN, but does not represent that MS/UE is merely APN to the PDN selection information of network side report, and the complete skill scheme is as the criterion with specification.
Definition to NAI in the WiMAX system is following:
...! ] WiMAX-decoration}usernamerealm, and wherein, RoutingRealm is the domain name item, is an option, when MS/UE was in roaming state, structure visit region name information was used to assist Route Selection; { WiMAX-decoration} is an option; Be used to indicate ability or intention of MS/UE etc.; This can be expanded; Expansion WiMAX-decoration item adopts the mode of " avp=xxx ", wherein " xxx " the concrete property value of representative, clear and definite " avp " definition is not arranged in the WiMAX agreement at present as yet; Username is used for identity at user's home network identifying user.
In the inventive method embodiment; Said NAI comprises said PDN and selects information; Be specially MS/UE NAI { the WiMAX-decoration} item is provided with said PDN and selects information, and said PDN selection information is APN or PDN domain name, perhaps contains the indication information of said APN or PDN domain name.With said PDN selection information is that APN is an example, promptly WiMAX-decoration} is set to " apn=XXX ".Said " apn=XXX " not necessarily need to use " apn " character, { the WiMAX-decoration} item gets final product in said only to need said PDN to be selected information setting.
The said PDN that step 103, MAG/AR resolve from MS/UE selects information and preservation; And, carry said PDN in the said message and select information to Authenticator (authentication device) the transmission PDN authorization request message that is positioned on the Authenticator GW (authentication device gateway).
Optional, MAG/AR receive after the NAI can with among the NAI { the apn=XXX} item removes, and in EAP authentication and authorization process subsequently, uses not contain that { NAI of apn=XXX} item is as user's sign.
Step 104, said Authenticator are according to HSS (the Home Subscriber Server that in authentication of MS/UE initial network entry or re-authentication process, receives; Home subscriber servers)/AAA (AuthenticationAuthorization Accounting; Authentication and authorization charging) the user PDN subscription information that issues of server and said PDN select information, are that said MS/UE selects PDN GW.
Said PDN subscription information comprises at least one in the following information: the user allows the PDN information list that inserts, pairing address configuration information of PDN and the service quality CAMEL-Subscription-Information QoS Profile that acquiescence APN indicates, each permission inserts; Said QoS Profile comprises QCI (QoS Class Identifier; The Qos class letter), ARP (Allocation and Retention Priority distributes and reservation priority); GBR (Guaranteed Bit Rate; Guarantee bit rate), MBR (Maximum Bit Rate, Maximum Bit Rate) etc.The PDN information list that said user allows to insert has been listed the user and can have been inserted which PDN.
Said Authenticator is that MS/UE selects PDN GW to be specially: Authenticator confirms that MS/UE wants the PDN that connects after according to said PDN selection information.Authenticator wants the PDN that connects to authorize to the said MS/UE in the PDN information list that is included in said user and allows to insert; Passing through if authorize, is that said MS/UE distributes PDN GW address but then be positioned at the last PDN selection functional entity that perhaps is connected with said Authenticator with alternant way of said Authenticator.
Step 105, Authenticator are replied the PDN authorization response message to MAG/AR, carry the address of indication of PDN Authorization result and said PDN GW in the said message, and the terminal pairing PDN subscription information of PDN of asking etc.If include in the step 104 the pairing address configuration information of PDN (like home network prefix HL etc.) at selected PDN GW place in the said PDN subscription information, then also can carry described address configuration information in the PDN authorization response message.
Need to prove that the embodiment of the invention has been considered the situation that said Authenticator GW separates with Anchor GW.The two also can be positioned at same entity.If the two is positioned at same entity, then the information interaction between the two realizes with internal agreement or can omit.
Do not carry said address configuration information in the PDN authorization response message in said address configuration information or the step 105 but MAG/AR use Stateful (state is arranged) address configuration mode if carry in the PDN authorization response message in step 106 step 105; Then carry out this step: MAG/AR and reply Router Advertisement message, carry the address of said PDN Authorization result indication, said PDN GW etc. in the message to MS/UE.
If carry said address configuration information in the PDN authorization response message in the step 105, then said Router Advertisement message is also carried said address configuration information, goes to step 107.
If do not carry said address configuration information in the PDN authorization response message in the step 105 but MAG/AR use Stateful (state is arranged) address configuration mode; Then said Router Advertisement message is also carried DHCPv6 (Dynamic Host Configuration Protocol for IPv6; The IPv6 DHCP) indication goes to step 108.Said DHCPv6 indication is used to indicate MS/UE to initiate the DHCPv6 process.
Otherwise directly get into step 108.
If carry said address configuration information in the PDN authorization response message in step 107 step 105; Optional; Address configuration information configuration of IP (Internet Protocol, the Internet protocol) address that the MS/UE basis is received, and send address conflict to MAG/AR and detect request Neighbor Solicitation message; Can in described request message, carry Proxy DAD (Proxy Duplicate Address Detect acts on behalf of duplicate address detection).
If do not carry said address configuration information in the PDN authorization response message in step 108 step 105; And MAG/AR uses Stateful (state is arranged) address configuration mode; Then said MS/UE obtains the IP address according to the indication of the DHCPv6 in the step 106 initiation DHCPv6 process in said DHCPv6 process.MAG/AR triggering PMIP Client (PMIP client) selected said PDN GW (diagram PDN GW2) in step 104 carried out the MIP registration process after said DHCPv6 process was accomplished, and set up new MIP tunnel.Said DHCPv6 process and MIP registration process are prior art, repeat no more here.
If carry said address configuration information in the PDN authorization response message in the step 105, then MAG/AR triggering PMIP Client (PMIP client) selected said PDN GW (diagram PDN GW2) in step 104 carries out the MIP registration, sets up new MIP tunnel.
If do not carry said address configuration information in the PDN authorization response message in the step 105 but MAG/AR use Stateless (stateless) address configuration mode; Then MAG/AR triggering PMIP Client (PMIP client) selected said PDN GW (diagram PDN GW2) in step 104 carries out the MIP registration, sets up new MIP tunnel.In said MIP registration process, said PDN GW is MS/UE distributing IP address.
Need to prove; No matter be said MS/UE distributing IP address in which way; In the described MIP registration process of present embodiment, employed NAI information possibly also possibly be not comprise the NAI that said PDN selects the information extension for comprising the NAI that PDN selects the information extension.Concrete whether comprise depend on MAG/AR whether receive after the NAI with among the NAI { the apn=XXX} item has removed.
If do not carry said address configuration information in the PDN authorization response message in step 109 step 105; And MAG/AR uses Stateless (stateless) address configuration mode; Then MAG/AR sends Router Advertisement message to MS/UE; Carrying in the said message in the step 108 at PDN GW described in the said MIP registration process is said MS/UE distributing IP address, carries the indication of PDN Authorization result simultaneously, PDN GW selection function is the information such as PDN GW address that MS/UE distributes.
Through using embodiment of the invention disclosed method; The terminal is through expansion Router Solicitation message; Perhaps in said Router Solicitation message, carry the NAI of expansion; Can report that PDN selects information to network side, be that terminal select PDN GW according to said information with the PDN subscription information that the HSS/AAA that in initial authentication, obtains that self preserves issues by Authenticator, makes the terminal realize the selection to Additional PDN.
Present embodiment discloses the method that a kind of packet data network is selected.
Present embodiment is an example through the scene that inserts EPC with the WiMAX Access Network, explains that under the PMIPv6 pattern another method of Additional PDN is selected at the terminal.Said method is as shown in Figure 2, and concrete steps are following:
Definition to NAI in the WiMAX system is following:
...! ] WiMAX-decoration}usernamerealm, and wherein, RoutingRealm is the domain name item, is an option, when MS/UE was in roaming state, structure visit region name information was used to assist Route Selection; { WiMAX-decoration} is an option; Be used to indicate ability or intention of MS/UE etc.; This can be expanded; Expansion WiMAX-decoration item adopts the mode of " avp=xxx ", wherein " xxx " the concrete property value of representative, clear and definite " avp " definition is not arranged in the WiMAX agreement at present as yet; Username is used for identity at user's home network identifying user.
In the inventive method embodiment; Said NAI comprises said PDN and selects information; Be specially MS/UE NAI { the WiMAX-decoration} item is provided with said PDN and selects information, and said PDN selection information is APN or PDN domain name, perhaps contains the indication information of said APN or PDN domain name.With said PDN selection information is that APN is an example, promptly WiMAX-decoration} is set to " apn=XXX ".Said " apn=XXX " not necessarily need to use " apn " character, { the WiMAX-decoration} item gets final product in said only to need said PDN to be selected information setting.
Said DHCP Proxy or DHCP Relay select one be present in the system.
The said PDN that step 205, MAG/AR resolve from MS/UE selects information, and sends the PDN authorization request message to the Authenticator that is positioned on the Authenticator GW, carries said PDN in the said message and selects information.
Optional, MAG/AR receive after the NAI can with among the NAI { the apn=XXX} item removes, and in EAP authentication and authorization process subsequently, uses not contain that { NAI of apn=XXX} item is as user's sign.
Said PDN subscription information comprises at least one in the following information: the user allows the PDN information list that inserts, pairing address configuration information of PDN and the service quality CAMEL-Subscription-Information QoS Profile (comprising QCI, ARP, GBR, MBR etc.) that acquiescence APN indicates, each permission inserts.The PDN information list that said user allows to insert has been listed the user and can have been inserted which PDN.
Said Authenticator is that MS/UE selects PDN GW to be specially: Authenticator confirms that MS/UE wants the PDN that connects after according to said PDN selection information.Authenticator wants the PDN that connects to authorize to the said MS/UE in the PDN information list that is included in said user and allows to insert; Passing through if authorize, is that said MS/UE distributes PDN GW address but then be positioned at the last PDN selection functional entity that perhaps is connected with said Authenticator with alternant way of said Authenticator.
Need to prove that the embodiment of the invention has been considered the situation that said Authenticator GW separates with Anchor GW.The two also can be positioned at same entity.If the two is positioned at same entity, then the information interaction between the two realizes with internal agreement or can omit.
If that use in step 208 system is DHCP Relay, then said DHCP Relay sends DHCP Relay-Forward message to DHCPServer (Dynamic Host Configuration Protocol server), carries said PDN in the said message and selects information.
If that use in the system is DHCP Proxy, then:
DHCP Proxy is MS/UE distributing IP address according to said PDN selection information;
Perhaps MAG triggers PMIP Client selected PDN GW (diagram PDNGW2) in step 206 and carries out the MIP registration, sets up new MIP tunnel, in said MIP registration process, is MS/UE distributing IP address by said PDNGW.
In said MIP registration process, employed NAI information possibly also possibly be not comprise the NAI that said PDN selects the information extension for comprising the NAI that PDN selects the information extension.Concrete whether comprise depend on MAG/AR whether receive after the NAI with among the NAI { the apn=XXX} item has removed.
If that use in step 209 system is DHCP Relay, then carry out this step: DHCP Server is MS/UE distributing IP address according to said PDN selection information, and said IP address is carried at sends to DHCP Relay in the DHCPRelay-Reply message.
If that use in the system is DHCP Proxy, then directly get into step 210.
If carried out the MIP registration in step 212 step 208, then directly get into step 215, otherwise carry out this step: MAG triggers PMIP Client selected PDN GW (diagram PDNGW2) in step 206 and carries out the MIP registration, sets up new MIP tunnel.
In said MIP registration process, employed NAI information possibly also possibly be not comprise the NAI that said PDN selects the information extension for comprising the NAI that PDN selects the information extension.Concrete whether comprise depend on MAG/AR whether receive after the NAI with among the NAI { the apn=XXX} item has removed.
If that use in step 213 system is DHCP Relay, then carry out this step: said DHCPRelay sends DHCP Relay-Forward message to DHCP Server, carries the final IP address of using of said MS/UE in the said message.
If that use in the system is DHCP Proxy, then directly get into step 215.
If step 214 has been carried out step 213; Then carry out this step: DHCP Server sends DHCP Relay-Reply message to DHCPRelay, carries the affirmation information that DHCP Server confirms to use the final IP address of using of MS/UE described in the step 213 in the said message.
Through using embodiment of the invention disclosed method; The terminal is through expansion DHCP Solicit message; Perhaps in said DHCP Solicit message, carry the NAI of expansion; Can report that PDN selects information to network side, be that terminal select PDN GW according to said information with the PDN subscription information that the HSS/AAA that in initial authentication, obtains that self preserves issues by Authenticator, makes the terminal realize the selection to AdditionalPDN.
Present embodiment discloses the method that a kind of packet data network is selected.
Present embodiment is an example through the scene that inserts EPC with the WiMAX Access Network, explains that under the PMIPv6 pattern another method of Additional PDN is selected at the terminal.Said method is as shown in Figure 3, and concrete steps are following:
Definition to NAI in the WiMAX system is following:
...! ] WiMAX-decoration}usernamerealm, and wherein, RoutingRealm is the domain name item, is an option, when MS/UE was in roaming state, structure visit region name information was used to assist Route Selection; { WiMAX-decoration} is an option; Be used to indicate ability or intention of MS/UE etc.; This can be expanded; Expansion WiMAX-decoration item adopts the mode of " avp=xxx ", wherein " xxx " the concrete property value of representative, clear and definite " avp " definition is not arranged in the WiMAX agreement at present as yet; Username is used for identity at user's home network identifying user.
In the inventive method embodiment; Said NAI comprises said PDN and selects information; Be specially MS/UE NAI { the WiMAX-decoration} item is provided with said PDN and selects information, and said PDN selection information is APN or PDN domain name, perhaps contains the indication information of said APN or PDN domain name.With said PDN selection information is that APN is an example, promptly WiMAX-decoration} is set to " apn=XXX ".Said " apn=XXX " not necessarily need to use " apn " character, { the WiMAX-decoration} item gets final product in said only to need said PDN to be selected information setting.
Said DHCP Proxy or DHCP Relay select one be present in the system.
The said PDN that step 305, MAG/AR resolve from MS/UE selects information, and sends the PDN authorization request message to the Authenticator that is positioned on the Authenticator GW, carries said PDN in the said message and selects information.
Optional, MAG/AR receive after the NAI can with among the NAI { the apn=XXX} item removes, and in EAP authentication and authorization process subsequently, uses not contain that { NAI of apn=XXX} item is as user's sign.
Said PDN subscription information comprises at least one in the following information: the user allows the PDN information list that inserts, pairing address configuration information of PDN and the service quality CAMEL-Subscription-Information QoS Profile (comprising QCI, ARP, GBR, MBR etc.) that acquiescence APN indicates, each permission inserts.The PDN information list that said user allows to insert has been listed the user and can have been inserted which PDN.
Said Authenticator is that MS/UE selects PDN GW to be specially: Authenticator confirms that MS/UE wants the PDN that connects after according to said PDN selection information.Authenticator wants the PDN that connects to authorize to the said MS/UE in the PDN information list that is included in said user and allows to insert; Passing through if authorize, is that said MS/UE distributes PDN GW address but then be positioned at the last PDN selection functional entity that perhaps is connected with said Authenticator with alternant way of said Authenticator.
Need to prove that the embodiment of the invention has been considered the situation that said Authenticator GW separates with Anchor GW.The two also can be positioned at same entity.If the two is positioned at same entity, then the information interaction between the two realizes with internal agreement or can omit.
If that use in step 308 system is DHCP Relay, then said DHCP Relay sends DHCP Relay-Forward message to DHCPServer (Dynamic Host Configuration Protocol server), carries said PDN in the said message and selects information.
If that use in the system is DHCP Proxy, then:
DHCP Proxy is MS/UE distributing IP address according to said PDN selection information.
If that use in step 309 system is DHCP Relay, then carry out this step: DHCP Server is MS/UE distributing IP address according to said PDN selection information, and said IP address is carried at sends to DHCP Relay in the DHCPRelay-Reply message.
If that use in the system is DHCP Proxy, then directly get into step 310.
In said MIP registration process, employed NAI information possibly also possibly be not comprise the NAI that said PDN selects the information extension for comprising the NAI that PDN selects the information extension.Concrete whether comprise depend on MAG/AR whether receive after the NAI with among the NAI { the apn=XXX} item has removed.
Through using embodiment of the invention disclosed method; The terminal is through expansion DHCP Request message; Perhaps in said DHCP Request message, carry the NAI of expansion; Can report that PDN selects information to network side, be that terminal select PDN GW according to said information with the PDN subscription information that the HSS/AAA that in initial authentication, obtains that self preserves issues by Authenticator, makes the terminal realize the selection to AdditionalPDN.
The embodiment of the invention discloses a kind of device of assisted Selection packet data network.
As shown in Figure 4, said device comprises:
First receiver module: be used to receive the PDN of self terminal to select information;
First sending module: be used for sending the PDN authorization request message, carry said PDN in the said PDN authorization request message and select information to authentication device.
Optional, said device can also comprise:
Second receiver module: be used to receive PDN authorization response message, carry the address of the indication of PDN Authorization result, said PDN GW in the said PDN authorization response message from said authentication device.
Optional, said device can also comprise:
Second sending module: be used for the address of said PDN Authorization result indication and said PDN GW is sent to said terminal.
Through using the disclosed device of the embodiment of the invention; The terminal can select report information to give authentication device PDN; Can also receive authentication device is address and the indication of PDN Authorization result of the PDN GW of said terminal selection, realizes the selection of terminal to packet data network.
The embodiment of the invention discloses a kind of device of selecting packet data network.
As shown in Figure 5, said device comprises:
Receiver module: be used to receive carrying PDN selection information or comprising Router Solicitation message or DHCP Solicit message or the DHCP Request message that said PDN selects the network access Identifier NAI of information of self terminal, perhaps select the PDN authorization request message of information from the said PDN of carrying of anchor ASN-GW;
Preserve module: the PDN subscription information that is used to preserve said terminal;
The PDN selection functional module: be used for according to the said PDN from said receiver module select information and said be that grouped data network gateway PDN GW is selected at said terminal from the said PDN subscription information of preserving module.
Optional, said device can also comprise:
Sending module: being used for said PDN selection function module is that the information of the PDN GW that selects of terminal sends to said terminal or anchor ASN-GW.
Through using the disclosed device of the embodiment of the invention, it is that PDN GW is selected at said terminal that PDN selection function module can be selected information and the PDN subscription information of self preserving according to the PDN that comes self terminal, realizes the selection of terminal to packet data network.
Through using embodiment of the invention the methods and apparatus disclosed, PDN that can the receiving terminal report selects information, and selecting information and PDN subscription information according to said PDN is that PDN GW is selected at the terminal, makes the selection of MS/UE realization to packet data network.
Above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (3)
1. a method of selecting packet data network is characterized in that, this method comprises:
Receive the DHCP Solicit message or the DHCP Request message of self terminal, carry the network access Identifier NAI that comprises PDN selection information in said DHCP Solicit message or the DHCP Request message;
Send the PDN authorization request message to authentication device; Carry said PDN in the said PDN authorization request message and select information, so that said authentication device is that grouped data network gateway PDN GW is selected at said terminal according to the PDN subscription information and the said PDN selection information at the said terminal of self preserving;
Reception is carried the address of the indication of PDN Authorization result, said PDN GW from the PDN authorization response message of said authentication device in the said PDN authorization response message;
Send DHCP Relay-Forward message to Dynamic Host Configuration Protocol server DHCP Server; Carry said PDN in the said DHCP Relay-Forward message and select information, so that said DHCP Server is said terminal distribution Internet protocol IP address according to said PDN selection information;
Reception is carried said IP address from the DHCP Relay-Reply message of said DHCP Server in the said DHCP Relay-Reply message.
2. the method for claim 1 is characterized in that, said PDN selection information is APN APN or PDN domain name, perhaps contains the indication information of said APN or PDN domain name.
3. the method for claim 1 is characterized in that, further comprises step:
If the said DHCP Solicit message that is of coming self terminal that receives is then replied DHCP Advertise message to the terminal;
Perhaps, if the said DHCP Request message that is of coming self terminal that receives is then replied DHCP Reply message to the terminal;
Carry address and the said IP address of said PDN Authorization result indication, said PDN GW among said DHCP Advertise message or the DHCP Reply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810142544A CN101635915B (en) | 2008-07-23 | 2008-07-23 | Method and device for selecting packet data network (PDN) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810142544A CN101635915B (en) | 2008-07-23 | 2008-07-23 | Method and device for selecting packet data network (PDN) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101635915A CN101635915A (en) | 2010-01-27 |
| CN101635915B true CN101635915B (en) | 2012-09-05 |
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| CN1689369A (en) * | 2002-10-08 | 2005-10-26 | 诺基亚公司 | Method and system for establishing a connection via an access network |
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| CN1689369A (en) * | 2002-10-08 | 2005-10-26 | 诺基亚公司 | Method and system for establishing a connection via an access network |
Non-Patent Citations (6)
| Title |
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| 3GPP.3rd Generation Partnership Project * |
| Architecture enhancements for non-3GPP accesses (Release 8).《3GPP TS 23.402 v8.2.0》.2008,第6.8.2,6.2.3,4.7.1,4.7.2,4.5.1节、图6.8.2-1,6.2.3-1,4.7.1-1,4.7.1-2. * |
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| Technical Specification Group Services and System Aspects * |
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| CN101635915A (en) | 2010-01-27 |
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