CN101257702A - Method, system and gateway equipment for realizing roaming user to access belonging area network - Google Patents
Method, system and gateway equipment for realizing roaming user to access belonging area network Download PDFInfo
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Abstract
The invention discloses a method for accessing roaming subscribers to a home-location network, a system and a gateway device. The gateway device alternates with an ENUM DNS device of the home-location network to obtain the address or domain name of the subscriber home-location GGSN, and makes a SGSN device communicate with the home-location GGSN. Through the embodiment of the invention, when roaming to the SGSN cross networks, subscribers can access the home-location network through APN without changing the SGSN device.
Description
Technical field
The present invention relates to the communications field, relate in particular to the technology of roaming user to access belonging area.
Background technology
Be used widely apace easily by mobility, transmission rate at a high speed, abundant advantages such as mobile data services with it for mobile pocket data business, as 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) GPRS (the General Packet RadioService of standard agreement definition, GPRS)/WCDMA (Wide (band) Code Division MultipleAccess, Wide band Code Division Multiple Access) system can make the user capture Packet data service.
In these systems, connect SGSN (Serving GPRS Support Node by gn interface, Serving GPRS Support Node), GGSN (Gateway GPRS Support Node, Gateway GPRS Support Node) and DNS (Domain Name System, domain name system) equipment etc., realize the communication between these equipment, therefore also the network that connects the gn interface of described equipment can be called the Gn network.
When the user visited Packet data service by the GPRS/WCDMA system, the APN (Access Point Name, APN) by carrying specified the packet data network or the type of service of visiting usually.If the APN that carries is not concrete title, but asterisk wildcard " * ", then according to the mode of 3GPP standard agreement definition, concrete APN is finally determined by the SGSN equipment in the GPRS/WCDMA system.
Described APN can be divided into general APN (perhaps being called public APN) and regional APN (perhaps being called special-purpose APN) usually.General APN is the APN that whole PLMN (Public Land Mobile Network, Public Land Mobile Network) network All Ranges can be discerned and use, and regional APN is the APN that only can discern and use in the subregion.
As a kind of mobile communication technology of extensive use, the GPRS/WCDMA system also supports the user to roam between different regional and national mobile networks.
In the existing standard scheme, the user is striding PLMN (Public Land Mobile Network, Public Land Mobile Nerwork) under the roaming condition, when adopting general APN requested service, usually by specifying a specific GGSN, be responsible for the across-network roaming user and adopt general APN to be linked into certain PDN (Packet DateNetwork, packet data network), carry out Packet data service.
Suppose that user MS_A belongs to PLMN X network, its ownership place is the a-quadrant, has provided as shown in Figure 1 as MS_A and has roamed into PLMN Y network, adopts general APN to be linked into user ascription area, the flow process during the request Packet data service.As can be seen, when MS_A roams into PLMN Y network, when adopting general APN to ask Packet data service, be specifically designed to the GGSN_G equipment of handling the across-network roaming Packet data service by one and be linked into PDN_G.And can't be linked into the packet data network PDN_A of its ownership place by the GGSN_A of its ownership place.Therefore the packet data network that when across-network roaming, inserts of user, with its packet data network that inserts at ownership place may be different, thereby may make the mobile subscriber can't enjoy the business of ordering at its ownership place.
In order to realize that the user still can be linked into belonging area network under the across-network roaming situation, prior art related to the present invention provides a kind of technical scheme, and its main thought is: the corresponding relation of configure user sign and homing GGSN on the SGSN of visited network; When user's across-network roaming to visited network, when adopting general APN online to carry out Packet data service, the SGSN of described visited network is by judging the configuration information in it, obtain the IP address or the domain name of the homing GGSN of user ID correspondence, according to the IP address or the domain name of described homing GGSN, be linked into the packet data network of ownership place then.
Prior art for make the user at across-network roaming behind visited network, when adopting general APN to ask Packet data service, still can be linked into the ownership place packet data network, need in the SGSN of visited network, dispose the IP address of GGSN of the user ID of home network and ownership place or the corresponding relation of domain name, doing like this needs to change visited network equipment, because therefore the not stationarity of visited network adopts the ownership place access of this method solution across-network roaming to be actually infeasible.
Summary of the invention
Embodiments of the invention provide a kind of method, system and gateway device of roaming user to access belonging area network, by the present invention, do not need the equipment in the visited network is changed, just can make the user when across-network roaming arrives the visited network requested service, can be linked into belonging area network by general APN.
Embodiments of the invention are achieved through the following technical solutions:
Embodiments of the invention provide a kind of method that realizes roaming user to access belonging area network, and it comprises:
The gateway device of user attaching network receives the service request of carrying APN that visited network is initiated;
Described gateway device carries out alternately with ENUM DNS according to described service request, obtains the address or the domain name of universal grouping wireless business supporting node GGSN of the ownership place of described APN correspondence;
Described gateway device sends to described service request the GGSN of described ownership place according to described address or domain name;
Described GGSN is linked into belonging area network with described service request.
Embodiments of the invention also provide a kind of system that realizes roaming user to access belonging area network, and it comprises:
Gateway device, ENUM DNS equipment and GGSN equipment;
Described gateway device is used to receive the service request of carrying APN that visited network is initiated; And according to described service request, carry out alternately with described ENUM DNS equipment, obtain the address or the domain name of GGSN of the ownership place of described APN correspondence; And, according to described address or domain name, described service request is sent to the GGSN of described ownership place;
The GGSN of described ownership place is used to receive the service request that described gateway device sends, and is linked into belonging area network according to described service request.
Embodiments of the invention also provide a kind of gateway device, and it comprises:
Processing unit, be used for after the service request of carrying APN that receives the visited network initiation, undertaken alternately by ENUM DNS equipment, obtain the address or the domain name of universal grouping wireless business supporting node GGSN of the ownership place of user ID correspondence with home network;
Request unit is used for according to described address or domain name described service request being sent to the GGSN of described ownership place.
The specific embodiments that provides by the embodiment of the invention described above as can be seen, it receives the service request of carrying APN that visited network is initiated by gateway device; And carry out alternately according to the ENUM DNS equipment of described service request and home network, obtain address or the domain name of user ascription area GGSN, and, described service request is linked into the belonging area network of described APN correspondence by the GGSN of described ownership place according to the address or the domain name of described homing GGSN.As seen by embodiments of the invention, do not need the equipment in the visited network is changed, can realize when user's across-network roaming behind visited network, can be linked into belonging area network by general APN.
Description of drawings
Fig. 1 carries out the schematic flow sheet of Packet data service for adopting standard scheme by general APN under the across-network roaming situation;
Fig. 2 is the flow chart of first embodiment provided by the invention;
Fig. 3 is the networking structure figure under first kind of situation among first embodiment provided by the invention;
Fig. 4 is the flow chart under first kind of situation among first embodiment provided by the invention;
Fig. 5 is the networking structure figure under second kind of situation among first embodiment provided by the invention;
Fig. 6 is the flow chart under second kind of situation among first embodiment provided by the invention;
Fig. 7 is the gateway device structure principle chart of the 3rd embodiment provided by the invention.
Embodiment
ENUM (Electronic NUMbering, electronic code) be an agreement---the RFC2916 of telephone number mappings work group (the Telephone Number Mapping working group) definition of IETF, the exercise question of RFC2916 is " E.164 number and a domain name system (E.164Number and DNS) ".It defined will be E.164 number translated be the domain name form, and be placed on the method in the database of DNS equipment.E.164 number is the valuable source that uses in the conventional telecommunication network, and DNS equipment is the important foundation of the Internet, and ENUM protocol is with E.164 number and DNS equipment combine.Each domain name that is changed into by number E.164 can corresponding a series of URI (Uniform Resource Identifier, unified resource sign), thereby makes the E.164 number of international uniform become the network address resources that can use in the Internet.The multiple information such as Email, IP phone number, unified message, Fax over IP or About You that ENUM protocol can utilize number E.164 to search registration (Registrant).
Embodiments of the invention are provided with ENUM DNS equipment based on above-mentioned consideration in the Gn network, and in ENUM DNS equipment the resource record of the corresponding domain name of configure user sign, set up the corresponding relation of the GGSN of user ID and APN and ownership place thereof.Because the ENUM standard agreement has defined and how will meet E.164 that the number translated of form becomes the domain name form, therefore, as long as embodiments of the invention require described user ID to meet E.164 form, all be to meet the E.164 user ID of form as IMSI, MSISDN.
In addition, a gateway device is set in the Gn network, this equipment possesses ENUM DNS client functionality.When described gateway device receives the Packet data service request of carrying general APN, described gateway device is by ENUM DNS client functionality, obtain the IP address information or the domain-name information of GGSN of the ownership place of described APN correspondence, and described service request is transmitted to the GGSN of ownership place, thereby realize that the roamer is linked into the packet data network of ownership place.
First embodiment provided by the invention is a kind of method that realizes roaming user to access belonging area network, before implementing described first embodiment, ENUM DNS equipment need be set in home network, and in described ENUM DNS equipment, the resource record of the domain name that the configure user sign is corresponding, described resource record comprises the IP address corresponding relation of the GGSN of APN and user ascription area, perhaps comprises the corresponding relation of the domain name of APN and user ascription area GGSN.In addition, a gateway device is set in the Gn network, described gateway device possesses ENUM DNS client functionality; And in the DNS of described home network equipment, the correspondence relationship information of the IP address of the domain name of configuration of APN correspondence and described gateway device.
The concrete implementing procedure of described first embodiment comprises the steps: as shown in Figure 2
Step S101, when user's across-network roaming during to visited network request Packet data service, the Packet data service request that APN is carried in the SGSN equipment initiation of described visited network, and, undertaken obtaining the IP address of gateway device alternately by the DNS equipment of visited network and the DNS equipment of home network; And described service request is sent to described gateway device according to described IP address.
The specific implementation process of step S101 is as follows:
When user's across-network roaming to visited network, and request is during Packet data service; The Packet data service request that APN is carried in the SGSN equipment initiation of described visited network; And to the domain name mapping of the described APN correspondence of the DNS of present networks device request;
The domain name of the DNS device discovery APN correspondence of described visited network is at visited network, then to the parsing of the DNS of user attaching network device request domain name;
Because configured in advance has the domain name of APN correspondence and the correspondence relationship information of the IP address of gateway device in the DNS equipment of described home network, the DNS equipment of described home network returns the IP address of described gateway device according to the configuration information in it at this moment.
The SGSN equipment of described visited network sends to described gateway device according to described IP address with described service request.
Step S102, after described gateway device is received described service request, by with the ENUM of home network
DNS equipment carries out obtaining the IP address or the domain name of the homing GGSN of user ID correspondence alternately; And described service request is sent to the GGSN of described ownership place according to described IP address or domain name.
The specific implementation process of step S102 is as follows:
Described gateway device constructs corresponding domain name according to user ID, and to the ENUM of described home network DNS device request domain name is resolved;
The ENUM DNS equipment of described home network returns the resource record of domain name correspondence according to the resource record information of the domain name of the user ID correspondence that disposes in it; Described resource record comprises the IP address corresponding relation of the GGSN of APN and user ascription area, perhaps comprises the corresponding relation of the domain name of APN and user ascription area GGSN.
Described gateway device is according to described resource record, parses the IP address or the domain name of GGSN of the ownership place of the entrained APN correspondence of described service request.
Described gateway device sends to described service request according to described IP address or domain name the GGSN of described ownership place.
Step S103 after the GGSN equipment of described ownership place receives described service request, carries out information interaction according to the SGSN equipment of standard agreement and described visited network.
Interactive information between the GGSN equipment of described ownership place and the SGSN equipment of described visited network can be by described gateway device transfer, also can be no longer by described gateway device transfer.
Step S104, according to described interactive information, the GGSN of described ownership place is linked into described roamer the packet data network of the ownership place of described APN correspondence.
In two kinds of situation described first embodiment is described below:
First kind of situation be the user by gateway device and ENUM DNS equipment, be linked into home network from visited network, and the interactive information between the SGSN equipment of the GGSN equipment of described ownership place and described visited network is no longer by described gateway device transfer.The classical group planar network architecture comprises the home network PLMN X of user MS_A as shown in Figure 3, and wherein the a-quadrant in the PLMN X network is the ownership place of user MS_A, and DNS_R equipment is existing standard device in the described PLMN X network; The visited network PLMN Y that user MS_A across-network roaming arrives; The Gn network of wherein said PLMN X and the Gn network of described PLMN Y are by GRX network interconnection.But also be included in a gateway device of newly establishing in the Gn network; Also be included in an ENUM DNS equipment that is provided with among the home network PLMN X.
In classical group planar network architecture as shown in Figure 3, need do following configuration:
Described gateway device need possess the function of ENUM DNS client; Dispose the resource record of the domain name of user ID correspondence in described ENUM DNS equipment, described resource record comprises the IP address corresponding relation of the GGSN of APN and user ascription area, perhaps comprises the corresponding relation of the domain name of APN and user ascription area GGSN; In addition, the correspondence relationship information of the IP address of the domain name of configuration of APN correspondence and described gateway device in the original DNS_R equipment in home network PLMN X.
Under first kind of situation, user MS_A roams into PLMN Y network, initiate to carry after the Packet data service request of general APN concrete implementing procedure as shown in Figure 4, comprise following content:
Step 1., user MS_A roams into PLMN Y network, the SGSN_C equipment by described PLMN Y network is initiated PS (Packet Service, the Packet Service) service request of carrying general APN;
Step 2., described SGSN_C equipment is to the DNS_C device request domain name mapping of PLMN Y network;
Step 3., because APN_OI (the APN Operation Identify of the domain name of APN correspondence, APN operator sign) not PLMN Y network, described DNS_C equipment is by the DNS_R device request domain name mapping of GRX network in the PLMN of user attaching X network, described DNS_R equipment returns the IP address of described gateway device according to its configuration information;
Step 4., described SGSN_C equipment is initiated service request according to the IP address that obtains to described gateway device;
Step 5., described gateway device is configured to corresponding domain name with the user ID of MS_A, the ENUM DNS device request in PLMN X network is resolved domain name then; Described ENUMDNS equipment is given described gateway device according to the resource record that the configuration information in it returns the domain name correspondence;
Step 6., described gateway device parses the IP address or the domain name of the homing GGSN _ A equipment of described APN correspondence from the resource record that obtains, and the service request of SGSN_C equipment is transmitted to the GGSN_A equipment of described ownership place;
Step 7., the GGSN_A equipment of described ownership place with response message directly issue PLMN Y network SGSN_C equipment and without the gateway device transfer, afterwards, directly communicate between described GGSN_A equipment and the described SGSN_C equipment, and without the gateway device transfer;
Step 8., the GGSN_A equipment of described ownership place is linked into the service request of MS_A the packet data network PDN_A of ownership place, thereby realize that MS_A roams under the situation of PLMNY, adopt general APN still the PS service access can be arrived the function of its ownership place packet data network.
Second kind of situation be the user by gateway device and ENUM DNS equipment, be linked into home network from visited network, and the interactive information between the SGSN equipment of the GGSN equipment of described ownership place and described visited network is by described gateway device transfer.The classical group planar network architecture comprises the home network PLMN X of user MS_A as shown in Figure 5, and wherein the a-quadrant in the PLMN X network is user's a ownership place, and DNS_I equipment is the DNS equipment of standard in the described PLMN X network; The visited network PLMN Y that user MS_A across-network roaming arrives; The Gn network of wherein said PLMN X and the Gn network of described PLMN Y are by GRX network interconnection.But also be included in a gateway device that is provided with in the Gn network; Also be included in an ENUM DNS equipment that is provided with among the home network PLMN X.
In classical group planar network architecture as shown in Figure 5, need do following configuration:
Dispose the function that described gateway device possesses ENUM DNS client; Dispose the resource record of the domain name of user ID correspondence in described ENUM DNS equipment, described resource record comprises the IP address corresponding relation of the GGSN of APN and user ascription area, perhaps comprises the corresponding relation of the domain name of APN and user ascription area GGSN; In addition, the correspondence relationship information of the IP address of the domain name of configuration of APN correspondence and described gateway device in the DNS_I equipment in home network PLMN X.
Under second kind of situation, user MS_A roams into PLMN Y network, initiate to carry after the Packet data service request of general APN concrete implementing procedure as shown in Figure 6, comprise following content:
Step 1., MS_A roams into PLMN Y network, initiates the PS service request carry general APN by the SGSN_C equipment in the described PLMN Y network;
Step 2., the DNS_C device request corresponding domain name mapping of described SGSN_C equipment in described PLMN Y network;
Step 4., described SGSN_C equipment is initiated service request according to the IP address that gets access to described gateway device;
Step 5., described gateway device is configured to corresponding domain name with the user ID of MS_A, then to the corresponding domain name mapping of described ENUM DNS device request; Described ENUM DNS equipment returns the resource record of domain name correspondence according to the configuration information in it;
Step 6., described gateway device is from the resource record that obtains, parse IP address or the domain name of the homing GGSN _ A of described APN correspondence, and the service request that described SGSN_C equipment is sent is transmitted to described GGSN_A equipment, response message with described GGSN_A equipment is transmitted to described SGSN_C equipment simultaneously, afterwards, the communication of all between described SGSN_C equipment and the described GGSN_A equipment is all transmitted by described gateway device;
Step 7., described GGSN_A equipment is linked into user MS_A the packet data network PDN_A of ownership place according to described service request.
As seen, through said process,, realized that the across-network roaming user is linked into the function of its ownership place packet data network by general APN.
Second embodiment provided by the invention is a kind of system that realizes roaming user to access belonging area network, and it comprises: ENUM DNS equipment, GGSN and gateway device.Can also comprise DNS equipment.In described DNS equipment, dispose the correspondence relationship information of the IP address of the domain name of APN correspondence and described gateway device.
In the described ENUM DNS equipment, dispose the resource record of the domain name of user ID correspondence, described resource record comprises the IP address corresponding relation of the GGSN of APN and user ascription area, perhaps comprises the corresponding relation of the domain name of APN and user ascription area GGSN.
Described gateway device possesses ENUM DNS client functionality.
User's across-network roaming is behind visited network, and request is during Packet data service, and the SGSN equipment of described visited network is initiated the Packet data service request of carrying APN according to the Packet data service that the user asked; And the SGSN equipment of described visited network is according to described service request, the domain name mapping of the described APN correspondence of DNS device request in visited network; The domain name of the DNS device discovery APN correspondence in the visited network is not at visited network, then to the corresponding domain name mapping of described system request.Afterwards, the signal transitive relation between each network element is as follows in the system:
After DNS equipment in the described system receives the domain name mapping request,, return the IP address of described gateway device according to the correspondence relationship information of the IP address of the domain name of the APN correspondence that disposes in it and gateway device;
After the IP address of described gateway device returns to the SGSN equipment of described visited network by the DNS equipment in the visited network; The SGSN equipment of described visited network can send to described gateway device with described service request according to described IP address;
After described gateway device receives described service request, construct corresponding domain name according to user ID, and domain name is resolved to described ENUM DNS device request;
After described ENUM DNS equipment receives the domain name mapping request,, return the resource record of corresponding domain name correspondence according to the resource record information of the domain name of the user ID correspondence that disposes in it; Described resource record comprises the IP address corresponding relation of the GGSN of APN and user ascription area, perhaps comprises the corresponding relation of the domain name of APN and user ascription area GGSN.
The resource record of the domain name correspondence that described gateway device returns according to described ENUM DNS equipment parses the IP address or the domain name of GGSN of the ownership place of the entrained APN correspondence of described institute service request; And described service request is sent to the GGSN of described ownership place according to described IP address or domain name;
The GGSN of described ownership place is linked into the roamer on the network of the ownership place of described APN correspondence according to described service request.
The SGSN equipment of the GGSN of described ownership place and described visited network communicates, and interactive information therebetween can be by described gateway device transfer; Also can directly carry out mutual, and not by described gateway device transfer, thus the business that provides it to ask for the user.The concrete transmission of signal, identical with associated description among first embodiment, be not described in detail here.
The 3rd embodiment provided by the invention is a kind of gateway device, and its structure comprises processing unit and request unit as shown in Figure 7.Wherein said request unit comprises the conversion subelement, obtains subelement and resolves subelement.
After described gateway device received the service request that the SGSN of visited network sends, described processing unit was undertaken obtaining the IP address or the domain name of the homing GGSN of user ID correspondence alternately by the ENUM DNS equipment with home network.Detailed process is as follows:
Described conversion subelement constructs corresponding domain name according to user ID;
Described parsing of obtaining the domain name that subelement constructs to the described conversion subelement of the ENUM of described home network DNS device request, and, obtain the resource record of domain name correspondence according to the information that the ENUM DNS equipment of described home network returns;
Described parsing subelement is according to described IP address or the domain name of the GGSN of the ownership place of entrained APN correspondence when obtaining resource record that subelement obtains and parsing described user's requested service.
The described request unit sends to described service request according to described IP address or domain name the GGSN of described ownership place.
During user's requested service, can carry concrete APN in the foregoing description; Also can not carry concrete APN, as carry APN asterisk wildcard " * ".When carrying APN asterisk wildcard " * ", SGSN can determine a concrete APN according to the agreement of standard, when the service request of initiating, carries described APN then.Here be not described in detail.
In the foregoing description, all be to adopt in the supposition home network under the condition of the domain name of in an ENUM DNS equipment, preserving all user ID correspondences in the home network and APN and homing GGSN corresponding relation to realize.If when adopting the domain name in a plurality of ENUM DNS, preserve a part of user ID correspondence in the home network respectively and APN and homing GGSN corresponding relation in the home network, after certain ENUMDNS receives the domain name mapping request, find oneself not preserve relevant information, then the ENUM DNS name resolution process of passing through standard obtains corresponding information to other ENUM DNS device request domain name mapping up to finally finishing domain name mapping.
In the foregoing description, need the resource record of the corresponding domain name of configure user sign in the described ENUM DNS equipment, resource record wherein can be that APN is corresponding with GGSN IP address, also can be that APN is corresponding with the GGSN domain name.If configuration is that APN is corresponding with the GGSN domain name, then described gateway device also needs to go out by the DNS process analysis of standard the IP address of GGSN after the GGSN domain name that obtains the APN correspondence.
In the scheme implementation process, when if number section of user ID and attributed region have direct corresponding relation, user in the specific number section can correspond to the GGSN of its ownership place, therefore in this case, in ENUMDNS equipment, do not need to dispose the resource record of the homing GGSN of its domain name correspondence usually for each user, but get final product at the resource record of the corresponding domain name of each number section configuration, will significantly reduce the data configuration amount in the ENUM DNS equipment like this.
By the foregoing description,, realized the user under the situation of across-network roaming, the function of access belonging area packet data network by general APN.When under the situation of user's across-network roaming, when special-purpose APN service request is carried in initiation, as long as the domain name of configure dedicated APN correspondence and the corresponding relation of gateway device in standard DNS, and in the resource record of ENUM DNS equipment the corresponding relation of configure dedicated APN and homing GGSN, adopt the flow process of the foregoing description still can realize the function that ownership place inserts.
Gateway device of describing in the foregoing description and ENUM DNS equipment all are logical functional entities, when carrying out actual network deployment, it might not be physical equipment independently, can be in other physical equipment, to realize function corresponding, perhaps described function is dispersed in the different physical equipments and realize.The function that gateway device is possessed during as specific implementation can realize in the lump that in GGSN the function of ENUM DNS equipment also can be provided in the lump by other DNS equipment such as DNS_R.
The specific embodiments that provides by the invention described above as can be seen, it receives visited network by gateway device and initiates the service request of carrying APN; And carry out alternately according to the ENUM DNS equipment of described service request and home network, obtain IP address or the domain name of user ascription area GGSN, and according to the IP address or the domain name of described homing GGSN, described service request is sent to the GGSN of described ownership place, and the GGSN by described ownership place, the roamer is linked into the packet data network of the ownership place of described APN correspondence.As seen by embodiments of the invention, do not need the equipment in the visited network is changed, can realize when user's across-network roaming behind visited network, can pass through general APN, the realization roamer is linked into belonging area network.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (11)
1. a method that realizes roaming user to access belonging area network is characterized in that, comprising:
Gateway device receives the service request of carrying APN APN that roamer's visited network is initiated;
Described gateway device carries out alternately with electronic code name server ENUM DNS according to described service request, obtains the address or the domain name of universal grouping wireless business supporting node GGSN of the ownership place of described APN correspondence;
Described gateway device sends to described GGSN according to described address or domain name with described service request;
Described GGSN is linked into belonging area network according to described service request with described roamer.
2. the method for claim 1 is characterized in that, also comprises:
The service universal grouping wireless business supporting node SGSN equipment of visited network is initiated service request, and described service request is carried APN; Undertaken obtaining the address of gateway device in the home network alternately by the DNS equipment of visited network and the DNS equipment of home network; And described service request is sent to described gateway device according to described address.
3. method as claimed in claim 2 is characterized in that, also comprises:
In the DNS of described home network equipment, the correspondence relationship information of the domain name of configuration of APN correspondence and the address of gateway device.
4. as claim 2 or 3 described methods, it is characterized in that the SGSN equipment of described visited network is undertaken obtaining the process of the address of gateway device alternately by the DNS equipment of visited network and the DNS equipment of home network, specifically comprises:
The SGSN equipment of described visited network is to the domain name mapping of the DNS of visited network device request APN correspondence;
The domain name of the DNS device discovery APN correspondence of described visited network is at visited network, then to the parsing of the DNS of user attaching network device request domain name;
The DNS equipment of described home network returns the address of described gateway device according to the correspondence relationship information of the address of the domain name of the APN correspondence that disposes in it and gateway device.
5. the method for claim 1 is characterized in that, also comprises:
In the ENUM DNS equipment in home network, the resource record of the domain name that the configure user sign is corresponding, described resource record comprises the address corresponding relation of the GGSN of APN and user ascription area, perhaps comprises the corresponding relation of the domain name of APN and user ascription area GGSN.
6. as claim 1,2,3 or 5 described methods, it is characterized in that described gateway device carries out alternately with ENUM DNS according to described service request, obtain the address of GGSN of ownership place of described APN correspondence or the process of domain name, specifically comprise:
Described gateway device constructs corresponding domain name according to user ID, and to the ENUM of described home network DNS device request domain name is resolved;
The ENUM DNS equipment of described home network returns the resource record of domain name correspondence according to the resource record information of the domain name of the user ID correspondence that disposes in it;
Described gateway device is according to described resource record, parses the address or the domain name of GGSN of the ownership place of the entrained APN correspondence of described service request.
7. the method for claim 1 is characterized in that, also comprises:
The GGSN equipment of described ownership place and the SGSN equipment of visited network directly carry out information interaction, and interactive information is no longer by described gateway device transfer; Or,
The GGSN equipment of described ownership place by described gateway device transfer, carries out information interaction with the SGSN equipment of visited network.
8. a system that realizes roaming user to access belonging area network is characterized in that, comprising:
Gateway device, electronic code name server ENUM DNS equipment and universal grouping wireless business supporting node GGSN equipment;
Described gateway device is used to receive the service request of carrying APN APN that visited network is initiated; According to described service request, carry out alternately with described ENUM DNS equipment, obtain the address or the domain name of GGSN of the ownership place of described APN correspondence; And, according to described address or domain name, described service request is sent to the GGSN of described ownership place;
Described GGSN is used to receive the service request that described gateway device sends, and according to described service request the roamer is linked into belonging area network.
9. system as claimed in claim 8 is characterized in that, also comprises:
DNS equipment is used to receive the domain name mapping request of visited network according to the APN structure, and according to the domain name of the APN correspondence that disposes in it and the correspondence relationship information of the address of gateway device, the address of returning described gateway device is to described visited network.
10. a gateway device is characterized in that, comprising:
Processing unit, be used for after the service request of carrying access point APN that receives the visited network initiation, undertaken alternately by electronic code name server ENUM DNS equipment, obtain the address or the domain name of universal grouping wireless business supporting node GGSN of the ownership place of user ID correspondence with home network;
Request unit is used for according to described address or domain name described service request being sent to the GGSN of described ownership place.
11. gateway device as claimed in claim 10 is characterized in that, described processing unit comprises:
The conversion subelement is used for constructing corresponding domain name according to user ID after the service request of carrying APN that receives the visited network initiation;
Obtain subelement, be used for the parsing of the domain name that constructs to the described conversion subelement of the ENUM of described home network DNS device request, and, obtain the resource record of domain name correspondence according to the information that the ENUM DNS equipment of described home network returns;
Resolve subelement, be used for obtaining address or the domain name of GGSN that resource record that subelement obtains parses the ownership place of the entrained APN correspondence of described service request according to described.
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| CN 200710079981 CN101257702B (en) | 2007-03-01 | 2007-03-01 | Method, system and gateway equipment for realizing roaming user to access belonging area network |
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| CN 200710079981 CN101257702B (en) | 2007-03-01 | 2007-03-01 | Method, system and gateway equipment for realizing roaming user to access belonging area network |
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| CN101257702A true CN101257702A (en) | 2008-09-03 |
| CN101257702B CN101257702B (en) | 2012-12-12 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101600191B (en) * | 2009-07-15 | 2011-03-23 | 中国联合网络通信集团有限公司 | Method and system for processing roaming service |
| WO2011057526A1 (en) * | 2009-11-16 | 2011-05-19 | 中兴通讯股份有限公司 | Domain name processing method and domain name server |
| WO2012092859A1 (en) * | 2011-01-07 | 2012-07-12 | 中兴通讯股份有限公司 | Method and system for implementing ps service between roaming user and home location |
| CN103222252A (en) * | 2010-12-02 | 2013-07-24 | 瑞典爱立信有限公司 | Service access apparatus, method, computer program and computer program product for selective initiation of communication |
| WO2013143502A1 (en) * | 2012-03-30 | 2013-10-03 | 华为终端有限公司 | Ap response method, ap discovery method, ap and terminal |
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| CN109039988A (en) * | 2017-06-08 | 2018-12-18 | 中国移动通信集团河北有限公司 | Register method, device and the equipment of IP multimedia subsystem |
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| WO2011057526A1 (en) * | 2009-11-16 | 2011-05-19 | 中兴通讯股份有限公司 | Domain name processing method and domain name server |
| CN103222252A (en) * | 2010-12-02 | 2013-07-24 | 瑞典爱立信有限公司 | Service access apparatus, method, computer program and computer program product for selective initiation of communication |
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| WO2013143502A1 (en) * | 2012-03-30 | 2013-10-03 | 华为终端有限公司 | Ap response method, ap discovery method, ap and terminal |
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| CN109039988A (en) * | 2017-06-08 | 2018-12-18 | 中国移动通信集团河北有限公司 | Register method, device and the equipment of IP multimedia subsystem |
| CN109039988B (en) * | 2017-06-08 | 2022-02-22 | 中国移动通信集团河北有限公司 | Registration method, device and equipment of IP multimedia subsystem |
| CN111404975A (en) * | 2019-01-02 | 2020-07-10 | 中国移动通信集团终端有限公司 | Message transmission method, device, equipment and computer storage medium |
| CN111404975B (en) * | 2019-01-02 | 2023-09-19 | 中国移动通信集团终端有限公司 | Message transmission method, device, equipment and computer storage medium |
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