CN105722168A - Method, Home PGW and system for acquiring PGW FQDN - Google Patents
Method, Home PGW and system for acquiring PGW FQDN Download PDFInfo
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- CN105722168A CN105722168A CN201410723537.0A CN201410723537A CN105722168A CN 105722168 A CN105722168 A CN 105722168A CN 201410723537 A CN201410723537 A CN 201410723537A CN 105722168 A CN105722168 A CN 105722168A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
- H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
- H04W36/00695—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink using split of the control plane or user plane
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Abstract
The invention relates to a method, a Home PGW (Packet Data Network Gateway) and a system for acquiring PGW FQDN (Fully Qualified Domain Name). The method comprises the following steps: when UE (User Equipment) accesses a home location from a roaming place through an agent PGW and conducts data service, a Home PGW returns a session creating response message carrying the FQDN of the Home PGW to a Visited MME (Mobility Management Entity) or Visited SGSN (Serving GPRS Support Node) after receiving a session creating request message; and the Visited MME or Visited SGSN stores the FQDN of the Home PGW in the session creating response message. According to the invention, when a roaming user uses an agent PGW to access the home location, the FQDN of a Home PGW truly accessed by UE can be acquired, switching between 3GPP and non-3GPP is supported when the agent PGW is used, and the service experience of users is improved.
Description
Technical field
The present invention relates to communication technique field, particularly relate to roamer's use and act on behalf of PGW (PacketDataNetworkGateway, packet data network gateway) home domain access time one obtain the method for PGWFQDN (FullyQualifiedDomainName, complete fully qualified domain name), HomePGW and system.
Background technology
At present, the project of mobile wireless network of future generation is called SAE (SystemArchitectureEvolution, System Architecture Evolution) by 3GPP (3rdGenerationPartnershipProject, third generation partner program).The framework of SAE is as it is shown in figure 1, wherein contain following network element:
E-RAN (EvolvedRAN, the wireless access network of evolution), it is provided that higher up-downgoing speed, less transmission delay and relatively reliable being wirelessly transferred.The network element comprised in E-RAN is eNodeB (EvolvedNodeB, evolved base station), and the access for terminal provides Radio Resource.
HSS (HomeSubscriberServer, home subscriber server), permanently store user contracting data.
MME (MobilityManagementEntity, mobile management entity): chain of command functional entity, the interim server storing user data, it is responsible for and stores UE (UserEquipment, subscriber equipment) context (such as UE/ ID, mobility management states, user security parameters etc.), distribute temporary mark for user, when UE quarters at this tracing area, be responsible for this user is authenticated；Process all non-access layer informations between MME and UE；Trigger the paging at SAE.
SGW (ServingGW, gateway), this gateway is a user entity, is responsible for user face data route processing, and termination is in the downlink data of the UE of idle condition.The SAE of management and storage UE carries (bearer) context, and such as IP carries service parameter and network internal routing iinformation etc..Being the anchor point in 3GPP internal system user face, a user can only have a ServingGW a moment；
PGW (PacketDataNetworkGateway, packet data network gateway), it is responsible for UE and accesses the gateway of PDN (PacketDataNetwork, packet data network), distributing user IP address, is the mobility anchor point of 3GPP and non-3 GPP access system simultaneously.User has access to multiple PDNGW at synchronization.
PCRF (PolicyandChargingRuleFunctionality, "Policy and Charging Rules Function entity), this functional entity mainly produces to control Qos (QualityofService, the service quality) rule of user data delivery and charging regulation according to the configuration information of business information and user signing contract information and operator.This functional entity can also control foundation and the release of carrying in Access Network.
SGSN (ServingGPRSSupportNode, GPRS (the GeneralPacketRadioService serviced, general packet radio service) support node): the interim server storing user data, it is responsible for and stores UE relevant information, such as UE/ ID, mobility management states, user security parameters etc., temporary mark is distributed for user, complete user security function, complete user mobility management function and conversation management functional, process all non-access layer informations between SGSN and UE.
UTRAN (UMTSTerrestrialRadioAccessNetwork, unified terrestrial access network): the Radio Access Network of third generation mobile network (3G), the access for terminal provides Radio Resource.
GERAN (GSMEDGERadioAccessNetwork, GSM EDGE Radio Access Network): the Radio Access Network of GPRS/EDGE, the access for terminal provides Radio Resource.
Next generation mobile networks is as a kind of widely used mobile communication technology, this system can support user's services of roaming between different areas and the mobile network of country, also can support user's access service under different access waies, access and non-3 GPP access including 3GPP.
In prior art, it is possible to use act on behalf of PGW (ProxyPGW) technology and realize roamer and be linked into ownership place, and carry out data service.Specifically, UE is from belonging to public land mobile communication network network (HPLMN, PublicLandMobile-communicationNetwork) after roaming into visited place (roaming place) PLMN (VisitedPLMN), it is attached on the MME (VisitedMME) of VisitedPLMN, sent by described VisitedMME and create conversation request to acting on behalf of PGW, then by acting on behalf of the PGW forwarding establishment conversation request PGW (HomePGW) to UE ownership place, afterwards, follow-up PS (PacketSwitch is carried out by described VisitedMME and HomePGW, packet switch) business.
But, by current technology, VisitedMME does not get the FQDN that PGWFQDN is ProxyPGW of the FQDN of HomePGW, subsequent notification HSS, is not namely the UE PGW truly accessed.If UE is switched to non-3 gpp afterwards, because PGW is the mobility anchor point of 3GPP and non-3 GPP access system, under non-3 GPP access, cannot obtaining the UE PGWFQDN truly accessed from HSS, therefore switching can be failed, causes the experience having a strong impact on user to business.
It addition, VisitedMME does not get the UE PGW truly accessed, after follow-up UE returns to HPLMN, HomeMME also cannot select the SGW that the PGW topological relation that truly accesses with UE is nearest, thus wasting Internet resources.
Summary of the invention
Offer is provided and a kind of obtains the method for PGWFQDN, HomePGW and system, it is intended to the FQDN information overcoming the PGW (HomePGW) that cannot obtain actual access in prior art when using ProxyPGW, causes the problem cutting failure mutually between 3GPP and non-3 gpp.
In order to achieve the above object, the present invention proposes a kind of method obtaining PGWFQDN, including:
When UE is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, the establishment conversation request message from VisitedMME that HomePGW Receiving Agent PGW forwards；
Establishment conversational response message is returned to VisitedMME or VisitedSGSN by VisitedSGW；Described establishment conversational response message carries the FQDN of described HomePGW.
Preferably, described data service includes: UE initiates PDN connection establishment process to VisitedMME request；UE starts shooting attaching process under LTE；UE is initial activation process under GERAN/UTRAN；And/or UE returns to HPLMN process.
The embodiment of the present invention also proposes a kind of HomePGW obtaining PGWFQDN, including:
Receiver module, is used for when UE is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, the establishment conversation request message from VisitedMME that Receiving Agent PGW forwards；
Sending module, for returning establishment conversational response message by VisitedSGW to VisitedMME or VisitedSGSN；Described establishment conversational response message carries the FQDN of described HomePGW.
The embodiment of the present invention also proposes a kind of method obtaining the complete fully qualified domain name FQDN of packet data network gateway PGW, including:
When user equipment (UE) is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, described ownership place HomePGW is after receiving described establishment conversation request message, and the general packet radio service GPRS Support Node VisitedSGSN serviced to roaming place mobile management entity VisitedMME or roaming place returns establishment conversational response message；Described establishment conversational response message carries the FQDN of described HomePGW；
Described VisitedMME or VisitedSGSN preserves and creates the FQDN of HomePGW in conversational response message.
Preferably, described HomePGW also included before receiving described establishment conversation request message:
When user equipment (UE) is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, described VisitedMME or VisitedSGSN is sent by roaming place gateway VisitedSGW and creates conversation request message to acting on behalf of PGW, the described PGW of agency described establishment conversation request message is transmitted to described HomePGW.
Preferably, the method also includes:
If UE supports the switching of non-3 GPP access, VisitedMME or VisitedSGSN then sends request message to home subscriber server HSS, and the FQDN incidence relation of PGW Access Point Name APN and user truly accessed informs to HSS；The FQDN of described PGW is the FQDN of the HomePGW HomePGW carried in creating conversational response message.
Preferably, the method also includes:
When described UE moves to non-3 gpp, described HSS provides to non-3 GPP system and has activated PDN APN and the PGWFQDN information connected, and described APN and PGWFQDN is APN and the PGWFQDN being informed HSS by VisitedMME or VisitedSGSN.
Preferably, described data service includes: UE initiates PDN connection establishment process to VisitedMME request；UE starts shooting attaching process under LTE；UE is initial activation process under GERAN/UTRAN；And/or UE returns to HPLMN process.
Preferably, the method also includes:
When described UE returns to HPLMN, when described VisitedMME is to HomeMME transmission message, carry the FQDN of HomePGW；
The described HomeMME FQDN according to HomePGW, selects and the topological nearest HomeSGW of HomePGW.
The embodiment of the present invention also proposes a kind of system obtaining PGWFQDN, including: VisitedMME or VisitedSGSN, and HomePGW；Wherein:
Described HomePGW, for when user equipment (UE) is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, after receiving described establishment conversation request message, returns to VisitedMME or VisitedSGSN and creates conversational response message；Described establishment conversational response message carries the FQDN of described HomePGW；
Described VisitedMME or VisitedSGSN, creates the FQDN of HomePGW in conversational response message for preserving.
Preferably, described VisitedMME or VisitedSGSN, it is additionally operable to when UE is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, sent by VisitedSGW and create conversation request message to acting on behalf of PGW, the described PGW of agency described establishment conversation request message is transmitted to the HomePGW of described UE；
Described HomePGW, is additionally operable to after receiving described establishment conversation request message, returns establishment conversational response message by described VisitedSGW to VisitedMME or VisitedSGSN.
Preferably, this system also includes HSS；
VisitedMME or VisitedSGSN, is additionally operable to when UE supports the switching of non-3 GPP access, sends request message to HSS, and the FQDN incidence relation of PGW APN and user truly accessed informs to HSS；The FQDN of described PGW is the FQDN of the HomePGW HomePGW carried in creating conversational response message.
Preferably, described HSS, for when described UE moves to non-3 gpp, providing to non-3 GPP system and activated PDN APN and the PGWFQDN information connected, described APN and PGWFQDN is APN and the PGWFQDN being informed HSS by VisitedMME or VisitedSGSN.
Preferably, described data service includes: UE initiates PDN connection establishment process to VisitedMME request；UE starts shooting attaching process under LTE；UE is initial activation process under GERAN/UTRAN；And/or UE returns to HPLMN process.
Preferably, this system also includes: HomeMME；
Described VisitedMME, is additionally operable to when described UE returns to HPLMN, during to HomeMME transmission message, carries the FQDN of HomePGW；
Described HomeMME, for the FQDN according to HomePGW, selects and the topological nearest HomeSGW of HomePGW.
The a kind of of embodiment of the present invention proposition obtains the method for PGWFQDN, HomePGW and system, overcome the problem that in prior art, MME cannot obtain the FQDN information of the PGW (HomePGW) of actual access when using ProxyPGW, when roamer uses and acts on behalf of PGW home domain access, obtain the FQDN of the UE HomePGW truly accessed, thus when PGW is acted on behalf of in use, also can support the switching between 3GPP and non-3 gpp, improve customer service impression.Further, after UE returns to HPLMN, HomeMME can also select the SGW that the PGW topological relation that truly accesses with UE is nearest, saves Internet resources.
Accompanying drawing explanation
Fig. 1 is SAE configuration diagram in prior art；
Fig. 2 uses ProxyPGW technology to realize the schematic flow sheet of roaming user to access belonging area in prior art；
Fig. 3 a is the schematic flow sheet that the present invention obtains method one embodiment of PGWFQDN；
Fig. 3 b is the schematic flow sheet that the present invention obtains another embodiment of method of PGWFQDN；
Fig. 4 is the present invention one embodiment schematic flow sheet of the PDN connection establishment process of UE request when adopting ProxyPGW；
Fig. 5 be the present invention when adopting ProxyPGW UE start shooting under LTE an embodiment schematic flow sheet of attaching process；
Fig. 6 is present invention UE embodiment schematic flow sheet of initial activation process under GERAN/UTRAN when adopting ProxyPGW；
Fig. 7 be the present invention when adopting ProxyPGW UE be returned to an embodiment schematic flow sheet of HPLMN process；
Fig. 8 is the schematic flow sheet that the present invention obtains another embodiment of method of PGWFQDN；
Fig. 9 is the HomePGW mono-embodiment high-level schematic functional block diagram that the present invention obtains PGWFQDN.
In order to make technical scheme clearly, understand, be described in further detail below in conjunction with accompanying drawing.
Detailed description of the invention
The present invention relates to field, packet domain evolution territory in mobile communcations system, relate to roamer to use when acting on behalf of PGW home domain access, obtain the method and system of the FQDN of the UE HomePGW truly accessed, thus when PGW is acted on behalf of in use, the switching between 3GPP and non-3 gpp also can be supported.
The solution of the embodiment of the present invention is mainly: when UE is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, VisitedMME is sent by VisitedSGW and creates conversation request message to acting on behalf of PGW, the described PGW of agency described establishment conversation request message is transmitted to the HomePGW of described UE；After HomePGW receives establishment conversation request message, return establishment conversational response message by VisitedSGW to VisitedMME or VisitedSGSN；Create conversational response message and carry the FQDN of described HomePGW；VisitedMME or VisitedSGSN preserves and creates the FQDN of HomePGW in conversational response message.It is achieved in the MME when using ProxyPGW and can obtain the FQDN information of the PGW (HomePGW) of actual access, support the switching between 3GPP and non-3 gpp, improve customer service impression.
Specifically, as in figure 2 it is shown, Fig. 2 is that in prior art, typical utilization is acted on behalf of PGW technology and realized roaming user to access belonging area, and the method flow schematic diagram of PS business is carried out, as in figure 2 it is shown, the method comprises the following steps:
Step 201, roamer initiates PDN connection establishment to the MME (VisitedMME) of roaming place；
Step 202, VisitedMME initiates domain name system (DNS, DomainNameSystem) process of analysis, resolves the control plane address of ProxyPGW；
Step 203, dns server returns control plane address and the FQDN (FullyQualifiedDomainName, complete fully qualified domain name) of ProxyPGW to VisitedMME；
Step 204, VisitedMME sends to VisitedSGW and creates conversation request message, carries the control plane address of ProxyPGW；
Step 205, VisitedSGW sends to ProxyPGW and creates conversation request message；
Step 206, message is resolved, obtains user totem information after receiving establishment conversation request message by ProxyPGW, and ProxyPGW translates user according to this information and contracts PGW (HomePGW) address of ownership place；
Here, described user totem information can be specifically mobile subscriber international number (MSISDN, or international mobile subscriber identity (IMSI, InternationalMobileSubscriberIdentificationNumber) MobileStationIntegratedServicesDigitalNetwork).
Step 207, ProxyPGW, by the purpose IP address of the IP bag in establishment conversation request message, is revised as the address of HomePGW corresponding for MSISDN or IMSI, amended establishment conversation request message is sent to HomePGW；
Step 208, after HomePGW receives establishment conversation request message, directly returns to VisitedSGW and creates conversational response, carry the IP address of HomePGW, but will not carry the FQDN of HomePGW；
Step 209, VisitedSGW returns and creates conversational response to VisitedMME, carries the IP address of HomePGW, but will not carry the FQDN of HomePGW；
Step 210, VisitedMME sends carrying to eNodeB and sets up request message, is carried to the activation default EPS bearing context request message of UE in this message；
Step 211, eNodeB sends RRC connection to UE and reconfigures message, is carried to the activation default EPS bearing context request message of UE in this message；
Step 212, UE returns RRC connection to eNodeB and reconfigures completion message；
Step 213, eNodeB returns carrying to VisitedMME and sets up response message；
Step 214, UE sends to VisitedMME and activates default EPS bearing context Accept message；
Step 215, VisitedMME sends amendment bearing request message to VisitedSGW；
Step 216, VisitedSGW returns amendment carrying and responds to VisitedMME；
Step 217, if this User support is to the switching of non-3 GPP access, VisitedMME sends notice request to HSS, APN (AccessPointName, Access Point Name) and PGWFQDN incidence relation inform the FQDN that HSS, PGWFQDN are the ProxyPGW arrived according to DNS query；
Here, when follow-up UE moves to non-3 gpp, to activate the PDN PGW information connected to HSS.
Step 218, HSS stores APN and PGWFQDN incidence relation, returns push-notification-answer message to VisitedMME.
By said process it can be seen that in existing scheme, VisitedMME does not get the FQDN that PGWFQDN is ProxyPGW of the FQDN of HomePGW, subsequent notification HSS, namely it not the UE PGW truly accessed.If UE is switched to non-3 gpp afterwards, because PGW is the mobility anchor point of 3GPP and non-3 GPP access system, cannot obtaining the UE PGWFQDN truly accessed from HSS under non-3 GPP access, therefore switching can be failed, causes the experience having a strong impact on user to business.
It addition, VisitedMME does not get the UE PGW truly accessed, after follow-up UE returns to HPLMN, HomeMME also cannot select the SGW that the PGW topological relation that truly accesses with UE is nearest.
Embodiment of the present invention scheme, the MME when using ProxyPGW can be overcome in prior art cannot to obtain the FQDN information of PGW (HomePGW) of actual access, cause and the problem cutting failure mutually between non-3 gpp, and, after UE returns to HPLMN, HomeMME can also select the SGW that the PGW topological relation that truly accesses with UE is nearest, saves Internet resources.
Specifically, as shown in Figure 3 a, one embodiment of the invention proposes a kind of method obtaining PGWFQDN,
After step S302, HomePGW receive described establishment conversation request message, return to VisitedMME or VisitedSGSN and create conversational response message；Described establishment conversational response message carries the FQDN of described HomePGW；
The present embodiment scheme system running environment relates to UE, VisitedMME, acts on behalf of PGW, HomePGW, VisitedSGW, VisitedSGSN, HSS, HomeMME etc..
Embodiment of the present invention scheme is applicable for use with the scene of ProxyPGW.
First, when roaming UE is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, VisitedMME is sent by VisitedSGW and creates conversation request message to acting on behalf of PGW, the described PGW of agency described establishment conversation request message is transmitted to the HomePGW of described UE.
Wherein, described data service includes but is not limited to several as follows: UE initiates PDN connection establishment process to VisitedMME request；UE starts shooting attaching process under LTE；UE is initial activation process under GERAN/UTRAN；UE returns to HPLMN process.
HomePGW, after receiving establishment conversation request message, directly returns to VisitedSGW and creates conversational response message, and carry the FQDN of HomePGW in this conversational response message.
VisitedSGW returns and creates conversational response message to VisitedMME or VisitedSGSN, carries the FQDN of HomePGW.
Step S303, described VisitedMME or VisitedSGSN preserve and create the FQDN of HomePGW in conversational response message.
Described VisitedMME or VisitedSGSN preserves and creates the FQDN of HomePGW in conversational response message.
Further, in subsequent processes, if UE supports the switching of non-3 GPP access, VisitedMME or VisitedSGSN then sends request message to HSS, and the FQDN incidence relation of PGW APN and user truly accessed informs to HSS；The FQDN of described PGW is the FQDN of the HomePGW HomePGW carried in creating conversational response message.
Further, in the program, follow-up when UE moves to non-3 gpp, HSS provides to non-3 GPP system and has activated PDN APN and the PGWFQDN information connected, and described APN and PGWFQDN is APN and the PGWFQDN being informed HSS by VisitedMME or VisitedSGSN.
Alternatively, follow-up when described UE returns to HPLMN, when described VisitedMME is to HomeMME transmission message, carry the FQDN of HomePGW；The HomeMME FQDN according to HomePGW, selects and the topological nearest HomeSGW of HomePGW.Thus solving after UE returns to HPLMN, HomeMME cannot select the SGW problem that the PGW topological relation that truly accesses with UE is nearest, saves Internet resources.
The present embodiment is by upper scheme, overcome the problem that in prior art, MME cannot obtain the FQDN information of the PGW (HomePGW) of actual access when using ProxyPGW, when roamer uses and acts on behalf of PGW home domain access, obtain the FQDN of the UE HomePGW truly accessed, thus when PGW is acted on behalf of in use, also can support the switching between 3GPP and non-3 gpp, improve customer service impression.Further, after UE returns to HPLMN, HomeMME can also select the SGW that the PGW topological relation that truly accesses with UE is nearest, saves Internet resources.
As shown in Figure 3 b, another embodiment of the present invention proposes a kind of method obtaining PGWFQDN, including:
Step S301, when UE is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, VisitedMME or VisitedSGSN is sent by VisitedSGW and creates conversation request message to acting on behalf of PGW, the described PGW of agency described establishment conversation request message is transmitted to the HomePGW of described UE；
The present embodiment scheme system running environment relates to UE, VisitedMME, acts on behalf of PGW, HomePGW, VisitedSGW, VisitedSGSN, HSS, HomeMME etc..
Embodiment of the present invention scheme is applicable for use with the scene of ProxyPGW.
First, when roaming UE is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, VisitedMME is sent by VisitedSGW and creates conversation request message to acting on behalf of PGW, the described PGW of agency described establishment conversation request message is transmitted to the HomePGW of described UE.
Wherein, described data service includes but is not limited to several as follows: UE initiates PDN connection establishment process to VisitedMME request；UE starts shooting attaching process under LTE；UE is initial activation process under GERAN/UTRAN；UE returns to HPLMN process.
After step S302, described HomePGW receive described establishment conversation request message, return establishment conversational response message by described VisitedSGW to VisitedMME or VisitedSGSN；Described establishment conversational response message carries the FQDN of described HomePGW；
After HomePGW receives establishment conversation request message, directly return to VisitedSGW and create conversational response message, and in this conversational response message, carry the FQDN of HomePGW.
VisitedSGW returns and creates conversational response message to VisitedMME or VisitedSGSN, carries the FQDN of HomePGW.
Step S303, described VisitedMME or VisitedSGSN preserve and create the FQDN of HomePGW in conversational response message.
Described VisitedMME or VisitedSGSN preserves and creates the FQDN of HomePGW in conversational response message.
Further, in subsequent processes, if UE supports the switching of non-3 GPP access, VisitedMME or VisitedSGSN then sends request message to HSS, and the FQDN incidence relation of PGW APN and user truly accessed informs to HSS；The FQDN of described PGW is the FQDN of the HomePGW HomePGW carried in creating conversational response message.
Further, in the program, follow-up when UE moves to non-3 gpp, HSS provides to non-3 GPP system and has activated PDN APN and the PGWFQDN information connected, and described APN and PGWFQDN is APN and the PGWFQDN being informed HSS by VisitedMME or VisitedSGSN.
Alternatively, follow-up when described UE returns to HPLMN, when described VisitedMME is to HomeMME transmission message, carry the FQDN of HomePGW；The HomeMME FQDN according to HomePGW, selects and the topological nearest HomeSGW of HomePGW.Thus solving after UE returns to HPLMN, HomeMME cannot select the SGW problem that the PGW topological relation that truly accesses with UE is nearest, saves Internet resources.
The present embodiment is by upper scheme, overcome the problem that in prior art, MME cannot obtain the FQDN information of the PGW (HomePGW) of actual access when using ProxyPGW, when roamer uses and acts on behalf of PGW home domain access, obtain the FQDN of the UE HomePGW truly accessed, thus when PGW is acted on behalf of in use, also can support the switching between 3GPP and non-3 gpp, improve customer service impression.Further, after UE returns to HPLMN, HomeMME can also select the SGW that the PGW topological relation that truly accesses with UE is nearest, saves Internet resources.
Set forth in the present invention that UE initiates start shooting under LTE attaching process, UE initial activation process, UE under GERAN/UTRAN of PDN connection establishment process, UE to VisitedMME request and returns to data processing flow process in HPLMN process in detail below:
As shown in Figure 4, one embodiment of the present of invention in the PDN connection establishment process of UE request when being adopt ProxyPGW, specifically include following steps:
Step 401, roamer initiates PDN connection establishment to the MME (VisitedMME) of roaming place；
Step 402, VisitedMME initiates domain name system (DNS, DomainNameSystem) process of analysis, resolves the control plane address of ProxyPGW；
Step 403, dns server returns control plane address and the FQDN of ProxyPGW to VisitedMME；
Step 404, VisitedMME sends to VisitedSGW and creates conversation request message, carries the control plane address of ProxyPGW；
Step 405, VisitedSGW sends to ProxyPGW and creates conversation request message；
Step 406, message is resolved, obtains user totem information after receiving establishment conversation request message by ProxyPGW, and ProxyPGW translates user according to this information and contracts PGW (HomePGW) address of ownership place；
Here, described user totem information can be specifically mobile subscriber international number (MSISDN, or international mobile subscriber identity (IMSI, InternationalMobileSubscriberIdentificationNumber) MobileStationIntegratedServicesDigitalNetwork).
Step 407, ProxyPGW, by the purpose IP address of the IP bag in establishment conversation request message, is revised as the address of HomePGW corresponding for MSISDN or IMSI, amended establishment conversation request message is sent to HomePGW；
Step 408, after HomePGW receives establishment conversation request message, directly returns to VisitedSGW and creates conversational response, carry the IP address of HomePGW, also carry the FQDN of HomePGW simultaneously；
Step 409, VisitedSGW returns and creates conversational response to VisitedMME, carries the IP address of HomePGW, also carries the FQDN of HomePGW simultaneously；
Step 410, VisitedMME preserves the FQDN of HomePGW；
Step 411, VisitedMME sends carrying to eNodeB and sets up request message, is carried to the activation default EPS bearing context request message of UE in this message；
Step 412, eNodeB sends RRC connection to UE and reconfigures message, is carried to the activation default EPS bearing context request message of UE in this message；
Step 413, UE returns RRC connection to eNodeB and reconfigures completion message；
Step 414, eNodeB returns carrying to VisitedMME and sets up response message；
Step 415, UE sends to VisitedMME and activates default EPS bearing context Accept message；
Step 416, VisitedMME sends amendment bearing request message to VisitedSGW；
Step 417, VisitedSGW returns amendment carrying and responds to VisitedMME；
Step 418, if this User support is to the switching of non-3 GPP access, VisitedMME sends notice request to HSS, and APN and PGWFQDN incidence relation is informed the FQDN that HSS, PGWFQDN are the ProxyPGW arrived according to DNS query；
Here, when follow-up UE moves to non-3 gpp, to activate the PDN PGW information connected to HSS.
Step 419, HSS stores APN and PGWFQDN incidence relation, returns push-notification-answer message to VisitedMME.
As it is shown in figure 5, UE starts shooting one embodiment of the present of invention in attaching process under LTE when being adopt ProxyPGW, specifically include:
Step 501, roamer initiates attachment to the MME (VisitedMME) of roaming place；
Step 502, VisitedMME completes the authentication to UE and security function；
Step 503, VisitedMME sends location update message to HSS, obtains user signing contract information；
Step 504, HSS updates to VisitedMME home position and confirms message；
Step 505, VisitedMME initiates domain name system (DNS, DomainNameSystem) process of analysis, resolves the control plane address of ProxyPGW；
Step 506, dns server returns control plane address and the FQDN of ProxyPGW to VisitedMME；
Step 507, VisitedMME sends to VisitedSGW and creates conversation request message, carries the control plane address of ProxyPGW；
Step 508, VisitedSGW sends to ProxyPGW and creates conversation request message；
Step 509, message is resolved, obtains user totem information after receiving establishment conversation request message by ProxyPGW, and ProxyPGW translates user according to this information and contracts PGW (HomePGW) address of ownership place；
Here, described user totem information can be specifically mobile subscriber international number (MSISDN, or international mobile subscriber identity (IMSI, InternationalMobileSubscriberIdentificationNumber) MobileStationIntegratedServicesDigitalNetwork).
Step 510, ProxyPGW, by the purpose IP address of the IP bag in establishment conversation request message, is revised as the address of HomePGW corresponding for MSISDN or IMSI, amended establishment conversation request message is sent to HomePGW；
Step 511, after HomePGW receives establishment conversation request message, directly returns to VisitedSGW and creates conversational response, carry the IP address of HomePGW, also carry the FQDN of HomePGW simultaneously；
Step 512, VisitedSGW returns and creates conversational response to VisitedMME, carries the IP address of HomePGW, also carries the FQDN of HomePGW simultaneously；
Step 513, VisitedMME preserves the FQDN of HomePGW；
Step 514, VisitedMME sends initial context to eNodeB and sets up request message, and the attachment being carried to UE in this message accepts and activates default EPS bearing context request message；
Step 515, eNodeB sends RRC connection to UE and reconfigures message, and the attachment being carried to UE in this message accepts and activates default EPS bearing context request message；
Step 516, UE returns RRC connection to eNodeB and reconfigures completion message；
Step 517, eNodeB returns initial context to VisitedMME and sets up response message；
Step 518, UE sends attachment to VisitedMME and completes and activate default EPS bearing context Accept message；
Step 519, VisitedMME sends amendment bearing request message to VisitedSGW；
Step 520, VisitedSGW returns amendment carrying and responds to VisitedMME；
Step 521, if this User support is to the switching of non-3 GPP access, VisitedMME sends notice request to HSS, and APN and PGWFQDN incidence relation is informed the FQDN that HSS, PGWFQDN are the ProxyPGW arrived according to DNS query；
Here, when follow-up UE moves to non-3 gpp, to activate the PDN PGW information connected to HSS.
Step 522, HSS stores APN and PGWFQDN incidence relation, returns push-notification-answer message to VisitedMME.
As shown in Figure 6, UE one embodiment of the present of invention in initial activation process under GERAN/UTRAN when being adopt ProxyPGW, specifically include:
Step 601, roamer initiates to activate PDP Context request to the SGSN (VisitedSGSN) of roaming place；
Step 602, VisitedSGSN initiates domain name system (DNS, DomainNameSystem) process of analysis, resolves the control plane address of ProxyPGW；
Step 603, dns server returns control plane address and the FQDN of ProxyPGW to VisitedSGSN；
Step 604, VisitedSGSN determines use S4 interface, sends to VisitedSGW and creates conversation request message, carries the control plane address of ProxyPGW；
Step 605, VisitedSGW sends to ProxyPGW and creates conversation request message；
Step 606, message is resolved, obtains user totem information after receiving establishment conversation request message by ProxyPGW, and ProxyPGW translates user according to this information and contracts PGW (HomePGW) address of ownership place；
Here, described user totem information can be specifically mobile subscriber international number (MSISDN, or international mobile subscriber identity (IMSI, InternationalMobileSubscriberIdentificationNumber) MobileStationIntegratedServicesDigitalNetwork).
Step 607, ProxyPGW, by the purpose IP address of the IP bag in establishment conversation request message, is revised as the address of HomePGW corresponding for MSISDN or IMSI, amended establishment conversation request message is sent to HomePGW；
Step 608, after HomePGW receives establishment conversation request message, directly returns to VisitedSGW and creates conversational response, carry the IP address of HomePGW, also carry the FQDN of HomePGW simultaneously；
Step 609, VisitedSGW returns and creates conversational response to VisitedSGSN, carries the IP address of HomePGW, also carries the FQDN of HomePGW simultaneously；
Step 610, VisitedSGSN preserves the FQDN of HomePGW；
Step 611, if UTRAN accesses, VisitedSGSN sends RAB assignment request message to UTRAN；
Step 612, UTRAN sends RRC connection to UE and reconfigures message；
Step 613, UE returns RRC connection to UTRAN and reconfigures completion message；
Step 614, UTRAN returns RAB to VisitedSGSN and assigns response message；
Step 615, if this PDP employs single tunnel, VisitedSGSN sends amendment bearing request message to VisitedSGW；
Step 616, VisitedSGW returns amendment carrying and responds to VisitedSGSN；
Step 617, if this User support is to the switching of non-3 GPP access, VisitedSGSN sends notice request to HSS, and APN and PGWFQDN incidence relation is informed the FQDN that HSS, PGWFQDN are the ProxyPGW arrived according to DNS query；
Here, when follow-up UE moves to non-3 gpp, to activate the PDN PGW information connected to HSS.
Step 618, HSS stores APN and PGWFQDN incidence relation, returns push-notification-answer message to VisitedSGSN；
Step 619, VisitedSGSN sends activation PDP Context to UE and accepts message；
As it is shown in fig. 7, be that when adopting ProxyPGW, UE is returned to one embodiment of the present of invention in HPLMN process, specifically include:
Step 701, roamer has completed to adhere to the MME (VisitedMME) of roaming place by ProxyPGW；
Step 702, user asks message to MME (HomeMME) initiating updating of tracking area of ownership place；
Step 703, HomeMME sends context request message to VisitedMME；
Step 704, VisitedMME returns context response information to HomeMME, carries the FQDN of HomePGW；
Step 705, HomeMME completes the authentication to UE and security function；
Step 706, HomeMME returns context acknowledgement message to VisitedMME；
Step 707, HomeMME initiates domain name system (DNS, DomainNameSystem) process of analysis, resolves the control plane address of HomeSGW；
Step 708, dns server returns control plane address and the FQDN of HomeSGW to HomeMME；
Step 709, the HomeMME FQDN according to HomePGW, select and the topological nearest HomeSGW of HomePGW；
Step 710, continues executing with tracing section updating flow process.
From above-mentioned business procession, the present embodiment scheme overcomes the problem that in prior art, MME cannot obtain the FQDN information of the PGW (HomePGW) of actual access when using ProxyPGW, when roamer uses and acts on behalf of PGW home domain access, obtain the FQDN of the UE HomePGW truly accessed, thus when PGW is acted on behalf of in use, also can support the switching between 3GPP and non-3 gpp, improve customer service impression.Further, after UE returns to HPLMN, HomeMME can also select the SGW that the PGW topological relation that truly accesses with UE is nearest, saves Internet resources.
Additionally, one embodiment of the invention proposes a kind of system obtaining PGWFQDN, including: VisitedMME, act on behalf of PGW, HomePGW, VisitedSGW, VisitedSGSN, HSS, HomeMME etc.；Wherein:
Described VisitedMME, for when UE is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, sent by VisitedSGW and create conversation request message to acting on behalf of PGW, the described PGW of agency described establishment conversation request message is transmitted to the HomePGW of described UE；
Described HomePGW, for, after receiving described establishment conversation request message, returning establishment conversational response message by described VisitedSGW to VisitedMME or VisitedSGSN；Described establishment conversational response message carries the FQDN of described HomePGW；
Described VisitedMME or VisitedSGSN, creates the FQDN of HomePGW in conversational response message for preserving.
Further, VisitedMME or VisitedSGSN, it is additionally operable to when UE supports the switching of non-3 GPP access, sends request message to HSS, the FQDN incidence relation of APN and HomePGW is informed to HSS.
Described HSS, for when described UE moves to non-3 gpp, providing to UE and activated the PDN PGW information connected.
Described VisitedMME, is additionally operable to when described UE returns to HPLMN, during to HomeMME transmission message, carries the FQDN of HomePGW；
Described HomeMME, for the FQDN according to HomePGW, selects and the topological nearest HomeSGW of HomePGW.
Specifically, embodiment of the present invention scheme is applicable for use with the scene of ProxyPGW.
First, when roaming UE is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, VisitedMME is sent by VisitedSGW and creates conversation request message to acting on behalf of PGW, the described PGW of agency described establishment conversation request message is transmitted to the HomePGW of described UE.
Wherein, described data service includes but is not limited to several as follows: UE initiates PDN connection establishment process to VisitedMME request；UE starts shooting attaching process under LTE；UE is initial activation process under GERAN/UTRAN；UE returns to HPLMN process.
After HomePGW receives establishment conversation request message, directly return to VisitedSGW and create conversational response message, and in this conversational response message, carry the FQDN of HomePGW.
VisitedSGW returns and creates conversational response message to VisitedMME or VisitedSGSN, carries the FQDN of HomePGW.
Described VisitedMME or VisitedSGSN preserves and creates the FQDN of HomePGW in conversational response message.
Further, in subsequent processes, if UE supports the switching of non-3 GPP access, VisitedMME or VisitedSGSN then sends request message to HSS, and the FQDN incidence relation of APN and HomePGW is informed to HSS.
Further, in the program, follow-up when UE moves to non-3 gpp, UE obtains from HSS and has activated the PDN PGW information connected.
Alternatively, follow-up when described UE returns to HPLMN, when described VisitedMME is to HomeMME transmission message, carry the FQDN of HomePGW；The HomeMME FQDN according to HomePGW, selects and the topological nearest HomeSGW of HomePGW.Thus solving after UE returns to HPLMN, HomeMME cannot select the SGW problem that the PGW topological relation that truly accesses with UE is nearest, saves Internet resources.
The present embodiment is by upper scheme, overcome the problem that in prior art, MME cannot obtain the FQDN information of the PGW (HomePGW) of actual access when using ProxyPGW, when roamer uses and acts on behalf of PGW home domain access, obtain the FQDN of the UE HomePGW truly accessed, thus when PGW is acted on behalf of in use, also can support the switching between 3GPP and non-3 gpp, improve customer service impression.Further, after UE returns to HPLMN, HomeMME can also select the SGW that the PGW topological relation that truly accesses with UE is nearest, saves Internet resources.
The present embodiment initiates start shooting under LTE attaching process, UE initial activation process, UE under GERAN/UTRAN of PDN connection establishment process, UE about UE to VisitedMME request and returns to data processing idiographic flow in HPLMN process, refer to above-described embodiment, do not repeat them here.
As shown in Figure 8, another embodiment of the present invention proposes a kind of method obtaining PGWFQDN, including:
Step S801, when UE is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, the establishment conversation request message from VisitedMME that described HomePGW Receiving Agent PGW forwards；
Step S802, returns establishment conversational response message by VisitedSGW to VisitedMME or VisitedSGSN；Described establishment conversational response message carries the FQDN of described HomePGW.
Specifically, embodiment of the present invention scheme is applicable for use with the scene of ProxyPGW.
First, when roaming UE is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, VisitedMME is sent by VisitedSGW and creates conversation request message to acting on behalf of PGW, the described PGW of agency described establishment conversation request message is transmitted to the HomePGW of described UE.
Wherein, described data service includes but is not limited to several as follows: UE initiates PDN connection establishment process to VisitedMME request；UE starts shooting attaching process under LTE；UE is initial activation process under GERAN/UTRAN；UE returns to HPLMN process.
After HomePGW receives establishment conversation request message, directly return to VisitedSGW and create conversational response message, and in this conversational response message, carry the FQDN of HomePGW.
VisitedSGW returns and creates conversational response message to VisitedMME or VisitedSGSN, carries the FQDN of HomePGW.
Described VisitedMME or VisitedSGSN preserves and creates the FQDN of HomePGW in conversational response message.
Further, in subsequent processes, if UE supports the switching of non-3 GPP access, VisitedMME or VisitedSGSN then sends request message to HSS, and the FQDN incidence relation of APN and HomePGW is informed to HSS.
Further, in the program, follow-up when UE moves to non-3 gpp, UE obtains from HSS and has activated the PDN PGW information connected.
Alternatively, follow-up when described UE returns to HPLMN, when described VisitedMME is to HomeMME transmission message, carry the FQDN of HomePGW；The HomeMME FQDN according to HomePGW, selects and the topological nearest HomeSGW of HomePGW.Thus solving after UE returns to HPLMN, HomeMME cannot select the SGW problem that the PGW topological relation that truly accesses with UE is nearest, saves Internet resources.
The present embodiment is by upper scheme, overcome the problem that in prior art, MME cannot obtain the FQDN information of the PGW (HomePGW) of actual access when using ProxyPGW, when roamer uses and acts on behalf of PGW home domain access, obtain the FQDN of the UE HomePGW truly accessed, thus when PGW is acted on behalf of in use, also can support the switching between 3GPP and non-3 gpp, improve customer service impression.Further, after UE returns to HPLMN, HomeMME can also select the SGW that the PGW topological relation that truly accesses with UE is nearest, saves Internet resources.
The present embodiment initiates start shooting under LTE attaching process, UE initial activation process, UE under GERAN/UTRAN of PDN connection establishment process, UE about UE to VisitedMME request and returns to data processing idiographic flow in HPLMN process, refer to above-described embodiment, do not repeat them here.
As it is shown in figure 9, one embodiment of the invention proposes a kind of HomePGW obtaining PGWFQDN, including: receiver module 901 and sending module 902, wherein:
Receiver module 901, is used for when UE is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, the establishment conversation request message from VisitedMME that Receiving Agent PGW forwards；
Sending module 902, for, after receiving described establishment conversation request message described in described receiver module, returning establishment conversational response message by VisitedSGW to VisitedMME or VisitedSGSN；Described establishment conversational response message carries the FQDN of described HomePGW.
Specifically, embodiment of the present invention scheme is applicable for use with the scene of ProxyPGW.
First, when roaming UE is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, VisitedMME is sent by VisitedSGW and creates conversation request message to acting on behalf of PGW, the described PGW of agency described establishment conversation request message is transmitted to the HomePGW of described UE.
Wherein, described data service includes but is not limited to several as follows: UE initiates PDN connection establishment process to VisitedMME request；UE starts shooting attaching process under LTE；UE is initial activation process under GERAN/UTRAN；UE returns to HPLMN process.
After HomePGW receives establishment conversation request message, directly return to VisitedSGW and create conversational response message, and in this conversational response message, carry the FQDN of HomePGW.
VisitedSGW returns and creates conversational response message to VisitedMME or VisitedSGSN, carries the FQDN of HomePGW.
Described VisitedMME or VisitedSGSN preserves and creates the FQDN of HomePGW in conversational response message.
Further, in subsequent processes, if UE supports the switching of non-3 GPP access, VisitedMME or VisitedSGSN then sends request message to HSS, and the FQDN incidence relation of APN and HomePGW is informed to HSS.
Further, in the program, follow-up when UE moves to non-3 gpp, UE obtains from HSS and has activated the PDN PGW information connected.
Alternatively, follow-up when described UE returns to HPLMN, when described VisitedMME is to HomeMME transmission message, carry the FQDN of HomePGW；The HomeMME FQDN according to HomePGW, selects and the topological nearest HomeSGW of HomePGW.Thus solving after UE returns to HPLMN, HomeMME cannot select the SGW problem that the PGW topological relation that truly accesses with UE is nearest, saves Internet resources.
The present embodiment is by upper scheme, overcome the problem that in prior art, MME cannot obtain the FQDN information of the PGW (HomePGW) of actual access when using ProxyPGW, when roamer uses and acts on behalf of PGW home domain access, obtain the FQDN of the UE HomePGW truly accessed, thus when PGW is acted on behalf of in use, also can support the switching between 3GPP and non-3 gpp, improve customer service impression.Further, after UE returns to HPLMN, HomeMME can also select the SGW that the PGW topological relation that truly accesses with UE is nearest, saves Internet resources.
The present embodiment initiates start shooting under LTE attaching process, UE initial activation process, UE under GERAN/UTRAN of PDN connection establishment process, UE about UE to VisitedMME request and returns to data processing idiographic flow in HPLMN process, refer to above-described embodiment, do not repeat them here.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the present invention and accompanying drawing content to make or flow process conversion; or directly or indirectly it is used in other relevant technical field, all in like manner include in the scope of patent protection of the present invention.
Claims (15)
1. the method obtaining the complete fully qualified domain name FQDN of packet data network gateway PGW, it is characterised in that including:
When user equipment (UE) is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, the establishment conversation request message from roaming place mobile management entity VisitedMME that described ownership place packet data network gateway HomePGW Receiving Agent PGW forwards；
Establishment conversational response message is returned to the general packet radio service GPRS Support Node VisitedSGSN that VisitedMME or roaming place are servicing by roaming place gateway VisitedSGW；Described establishment conversational response message carries the FQDN of described HomePGW.
2. method according to claim 1, it is characterised in that described data service includes: UE initiates PDN connection establishment process to VisitedMME request；UE starts shooting attaching process under LTE；UE is initial activation process under GERAN/UTRAN；And/or UE returns to HPLMN process.
3. the HomePGW obtaining PGWFQDN, it is characterised in that including:
Receiver module, is used for when UE is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, the establishment conversation request message from VisitedMME that Receiving Agent PGW forwards；
Sending module, for returning establishment conversational response message by VisitedSGW to VisitedMME or VisitedSGSN；Described establishment conversational response message carries the FQDN of described HomePGW.
4. the method obtaining the complete fully qualified domain name FQDN of packet data network gateway PGW, it is characterised in that including:
When user equipment (UE) is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, described ownership place packet data network gateway HomePGW is after receiving described establishment conversation request message, and the general packet radio service GPRS Support Node VisitedSGSN serviced to roaming place mobile management entity VisitedMME or roaming place returns establishment conversational response message；Described establishment conversational response message carries the FQDN of described HomePGW；
Described VisitedMME or VisitedSGSN preserves and creates the FQDN of HomePGW in conversational response message.
5. method according to claim 4, it is characterised in that described HomePGW also included before receiving described establishment conversation request message:
When UE is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, described VisitedMME or VisitedSGSN is sent by VisitedSGW and creates conversation request message to acting on behalf of PGW, the described PGW of agency described establishment conversation request message is transmitted to described HomePGW.
6. method according to claim 4, it is characterised in that also include:
If UE supports the switching of non-3 GPP access, VisitedMME or VisitedSGSN then sends request message to home subscriber server HSS, and the FQDN incidence relation of PGW Access Point Name APN and user truly accessed informs to HSS；The FQDN of described PGW is the FQDN of the HomePGW HomePGW carried in creating conversational response message.
7. method according to claim 6, it is characterised in that also include:
When described UE moves to non-3 gpp, described HSS provides to non-3 GPP system and has activated PDN APN and the PGWFQDN information connected, and described APN and PGWFQDN is APN and the PGWFQDN being informed HSS by VisitedMME or VisitedSGSN.
8. the method according to claim 4,5 or 6, it is characterised in that described data service includes: UE initiates PDN connection establishment process to VisitedMME request；UE starts shooting attaching process under LTE；UE is initial activation process under GERAN/UTRAN；And/or UE returns to HPLMN process.
9. method according to claim 8, it is characterised in that also include:
When described UE returns to HPLMN, when described VisitedMME is to HomeMME transmission message, carry the FQDN of HomePGW；
The described HomeMME FQDN according to HomePGW, selects and the topological nearest HomeSGW of HomePGW.
10. the system obtaining PGWFQDN, it is characterised in that including: VisitedMME or VisitedSGSN, and HomePGW；Wherein:
Described HomePGW, for when user equipment (UE) is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, after receiving described establishment conversation request message, returns to VisitedMME or VisitedSGSN and creates conversational response message；Described establishment conversational response message carries the FQDN of described HomePGW；
Described VisitedMME or VisitedSGSN, creates the FQDN of HomePGW in conversational response message for preserving.
11. system according to claim 10, it is characterised in that
Described VisitedMME or VisitedSGSN, it is additionally operable to when UE is linked into ownership place by acting on behalf of PGW and carries out data service from roaming place, sent by VisitedSGW and create conversation request message to acting on behalf of PGW, the described PGW of agency described establishment conversation request message is transmitted to the HomePGW of described UE；
Described HomePGW, is additionally operable to after receiving described establishment conversation request message, returns establishment conversational response message by described VisitedSGW to VisitedMME or VisitedSGSN.
12. system according to claim 11, it is characterised in that also include HSS；
VisitedMME or VisitedSGSN, is additionally operable to when UE supports the switching of non-3 GPP access, sends request message to HSS, and the FQDN incidence relation of PGW APN and user truly accessed informs to HSS；The FQDN of described PGW is the FQDN of the HomePGW HomePGW carried in creating conversational response message.
13. system according to claim 12, it is characterised in that
Described HSS, for when described UE moves to non-3 gpp, providing to non-3 GPP system and activated PDN APN and the PGWFQDN information connected, described APN and PGWFQDN is APN and the PGWFQDN being informed HSS by VisitedMME or VisitedSGSN.
14. according to the system described in claim 10,11 or 12, it is characterised in that described data service includes: UE initiates PDN connection establishment process to VisitedMME request；UE starts shooting attaching process under LTE；UE is initial activation process under GERAN/UTRAN；And/or UE returns to HPLMN process.
15. system according to claim 14, it is characterised in that also include: HomeMME；
Described VisitedMME, is additionally operable to when described UE returns to HPLMN, during to HomeMME transmission message, carries the FQDN of HomePGW；
Described HomeMME, for the FQDN according to HomePGW, selects and the topological nearest HomeSGW of HomePGW.
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| CN201410723537.0A CN105722168B (en) | 2014-12-02 | 2014-12-02 | Method for acquiring PGW FQDN, Home PGW and system |
| PCT/CN2015/079098 WO2016086611A1 (en) | 2014-12-02 | 2015-05-15 | Method for acquiring pgw fqdn, home pgw and system |
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| CN106973415A (en) * | 2017-03-07 | 2017-07-21 | 中国联合网络通信集团有限公司 | A kind of acquisition PGW FQDN method and device |
| CN106973415B (en) * | 2017-03-07 | 2019-09-20 | 中国联合网络通信集团有限公司 | A kind of method and device obtaining PGW FQDN |
| WO2018233615A1 (en) * | 2017-06-20 | 2018-12-27 | 华为技术有限公司 | Pdu session processing method and device |
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| Publication number | Publication date |
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| WO2016086611A1 (en) | 2016-06-09 |
| CN105722168B (en) | 2020-04-28 |
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