CN102752830A - Selection method, implementing device and system for gateways - Google Patents
Selection method, implementing device and system for gateways Download PDFInfo
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- CN102752830A CN102752830A CN2011101908439A CN201110190843A CN102752830A CN 102752830 A CN102752830 A CN 102752830A CN 2011101908439 A CN2011101908439 A CN 2011101908439A CN 201110190843 A CN201110190843 A CN 201110190843A CN 102752830 A CN102752830 A CN 102752830A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/18—Selecting a network or a communication service
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Abstract
The invention discloses a selection method, an implementing device and a system for gateways. The method, the device and the system are used for solving the technical problems that wireless local area network (WLAN) data distribution can not be achieved due to the fact that gateway selection based on user locations can not be achieved after a mobile network operator moves down a data plane gateway. According to the method, the device and the system, a user terminal constructs a fully qualified domain name (FQDN) of an evolved packet data gateway (ePDG) and/or an FQDN of a packet data gateway (P-GW) according to identification information in wireless network broadcasting messages, so that a domain name server (DNS) is triggered to inquire the ePDG and/or the P-GW which is close to a wireless side, and an distribution function of WLAN data is implemented.
Description
Technical field
The present invention relates to moving communicating field, (how Wirless Local Area Networks WLAN) selects the method near the user side gateway, the equipment of realizing this method and system under the user service data shunting scene in the network to be specifically related to WLAN.
Background technology
In order to keep the competitiveness of 3-G (Generation Three mobile communication system) in the communications field; Speed is faster, time delay is lower and personalized more mobile communication service for the user provides; Simultaneously, reduce operating cost of operator, third generation partner program (3rd Generation Partnership Project; 3GPP) standard operation group just is being devoted to evolved packet system (Evolved Packet System, research EPS).Fig. 1 shows the structural representation of evolution grouping domain system, and is as shown in Figure 1, and whole EPS system is divided into wireless access network and core net two parts.In core net; Comprised home subscriber server (Home Subscriber Server; HSS), Mobility Management Entity (Mobility Management Entity, MME), Serving GPRS Support Node (Serving GPRS Support Node, SGSN), policy charging rule function (Policy and Charging Rule Function; PCRF), gateway (Serving Gateway; S-GW), packet data gateway (PDN Gateway, P-GW) and packet data network (Packet Data Network, PDN).Describe the each several part function below in detail:
Home subscriber server is the permanent storage place of user contracting data, is positioned at the home network that the user contracts.
Mobility Management Entity; Be the storage place of user contracting data, be responsible for the Non-Access Stratum signaling management of terminal to network, the safety verification function at terminal, mobile management, the tracking under user's idle pulley and the paging management function and the bearer management at terminal in current network.
Serving GPRS Support Node; Be global system for mobile communications (Global System for Mobile Communications; GSM) strengthen data transfer rate GSM evolution (Enhanced Data Rate for GSM Evolution; EDGE) wireless access network (GSM EDGE Radio Access Network; GERAN) and UMTS (Universal Mobile Telecommunications System, UMTS) land radio access web (UMTS Terrestrial Radio Access Network, the UTRAN) business support of user access core network network point; Similar on the function with Mobility Management Entity, be responsible for user's functions such as position renewal, paging management and bearer management.
Gateway is the gateway that core net arrives wireless system, is responsible for function, Lawful Interception and grouped data route and forwarding capability that service request is initiated to user plane bearer, the metadata cache under the idle pulley of terminal, the network side of core net in the terminal; Gateway is responsible for the situation that wireless network is used at the statistics of user's terminal, and produces the ticket that wireless network is used at the terminal, sends charging gateway to.
Packet data gateway; It is the gateway of evolution system and this system's external packet data network; It is connected on internet and the packet data network, is responsible for Internet protocol (Internet Protocol, IP) functions such as address assignment, billing function, packet package filtration and policy control at terminal.
Packet data network is the IP operation network of operator, and this network provides IP service through the core net of operator for the user.
Policy charging rule functional entity is to be responsible for providing charge control, the control of online credit, thresholding control and service quality (Quality ofService, QoS) the regular server in tactful aspect in the evolution system.
Wireless access network; Be by evolution base station (Evolved NodeB; ENB) and the 3G radio network controller (Radio Network Controllor RNC) forms, and it mainly is responsible for the transmitting-receiving of wireless signal; Through air interface and terminal contact, Radio Resource, scheduling of resource and the access control of management air interface.
Above-mentioned Serving GPRS Support Node is the SGSN that upgraded; Can support and gateway between the S4 interface; And and mobility management unit between adopt the GPRS Tunnel Protocol version 2 (GPRS Tunneling Protocol version 2 GTPv2) carry out intercommunication.And for the SGSN that supports the 3G core net packet switching (Packet Switching, PS) the territory network architecture and Fig. 1 are different.This moment, SGSN adopted gn interface to link to each other with MME, and intercommunication employing GPRS Tunnel Protocol version 1 (GPRS Tunneling Protocol version 1, GTPv1).SGSN can not link to each other with gateway, and (Gateway GPRS Support Node GGSN) directly carries out the packet data network visit to be connected to Gateway GPRS Support Node through gn interface.
UE is except being linked into the P-GW of EPS through the Access Network (the UMTS land radio access web E-UTRAN of for example above-mentioned evolution) of 3GPP definition; Can also insert through non-3 GPP access network; That is to say that P-GW is that 3GPP inserts the shared gateway that inserts with non-3GPP, is the anchor point that UE switches between net.WLAN inserts can insert the 3GPP network through following three kinds of modes as a kind of typical non-3 GPP access network network;
First kind of mode is to insert as fly-by-night non-3GPP; Adopt ePDG (Evolved Packet Data Gateway, the data gateway of evolution) to be transferred to P-GW, wherein the interface of ePDG and P-GW is called the S2b interface; This interface can adopt the PMIPv6 agreement, also can adopt the GTP agreement.
The second way is to insert as fly-by-night non-3GPP, adopts ePDG to be transferred to P-GW, and wherein the interface of UE and P-GW is referred to as the S2c interface, and this interface adopts the DSMIPv6 agreement.
The third mode is to insert as non-3GPP trusty, and UE directly inserts P-GW through wlan network, and wherein the interface of UE and P-GW is referred to as the S2c interface, and this interface adopts the DSMIPv6 agreement.
P-GW and authentication and authorization charging (Authentication Authorization Account; AAA) be the S6b interface between server (Server)/AAA agency (Proxy), this interface is used for P-GW and obtains operations such as contextual information from AAAServer/AAA Proxy; Between ePDG and the AAA Server/AAA Proxy is the SWm interface, and this interface is used for access authentication of user and other operations.
The user mainly uses WLAN to carry out professional visits such as Internet, and such business transmission resource consumption for Mobile Network Operator is big but network profit is lower.In order to tackle problem that data volume grow and network profit be not directly proportional and the network equipment dilatation of avoiding data volume grow to bring as far as possible; The Mobile Network Operator consideration divides such data nearby at network edge pours off; No longer transmit data, proposed the shunting thought of wlan network through core net.In realization; EPDG and P-GW can unload as the name a person for a particular job user data of wlan network of data distribution as the data surface packet gateway that WLAN inserts the EPC network; But the topological structure of ePDG and P-GW is all than higher in the present network design framework; Be usually located in the mobile operator core net network realization of unsuitable WLAN shunting.After Mobile Network Operator moved down the data surface gateway, no implementation support was temporarily at present selected based on the gateway of customer location, and for example for the user selects the data surface packet gateway near wireless side, the WLAN shunting realizes and can not accomplish.
Summary of the invention
In view of this; Main purpose of the present invention is to provide a kind of system of selection, realization equipment and system of gateway; Be used for solving after Mobile Network Operator moves down the data surface gateway, can't realize selecting based on the gateway of customer location, thus the technical problem of realization wlan network data distribution.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of system of selection of gateway is characterized in that, this method comprises:
User terminal comprises identification information or local gateway label in the global domain name FQDN that sends to domain name server (DNS), said DNS is according to said FQDN inquiry packets gateway; Said packet gateway comprises the packet data gateway ePDG and/or the packet data gateway P-GW of evolution.
Further; Insert as the 3GPP of non-trust at WLAN WLAN; Insert evolution block core EPC network through ePDG; Adopt under the scene of S2b interface between ePDG and the P-GW; Said identification information be with the wireless network broadcast message of sending with the UMTS land radio access web E-UTRAN of UMTS land radio access web UTRAN among the third generation partner program 3GPP that covers or evolution as the WLAN of access network in RAI or TAI; User terminal makes up the FQDN that is used for the ePDG selection according to said RAI or TAI, in the said FQDN that sends to said DNS, is comprising said RAI or TAI, and said DNS is according to said FQDN inquiry ePDG.
Further; Insert as the 3GPP of non-trust at WLAN, insert evolution block core EPC network, adopt between ePDG and the P-GW under the scene of S2b interface through ePDG; Said identification information is the service set SSID in the WLAN wireless network broadcast message of sending; User terminal makes up according to said SSID and is used for the FQDN that ePDG selects, and in the said FQDN that sends to said DNS, comprises said SSID, and said DNS is according to said FQDN inquiry ePDG.
Further; Insert as the 3GPP of non-trust at WLAN; Insert evolution block core net EPC network through ePDG, adopt between ePDG and the P-GW under the scene of S2b interface, said user terminal makes up according to said local gateway label and is used for the FQDN that ePDG selects; In the said FQDN that sends to said DNS, comprise said local gateway label, said DNS is according to said FQDN inquiry ePDG.
Further; Said method also comprises: said ePDG makes up the FQDN that is used for the P-GW selection according to the said ePDG sign or the local gateway label of configuration; In the said FQDN that sends to said DNS, comprise said ePDG sign or local gateway label, said DNS is according to said FQDN inquiry P-GW.
Further; Insert as the 3GPP of non-trust at WLAN; Insert the EPC network through ePDG; Adopt between user terminal and the P-GW under the scene of S2c interface, said identification information be with the wireless network broadcast message of sending with 3GPP UTRAN that covers or E-UTRAN as the WLAN of access network in RAI or TAI, user terminal makes up according to said RAI or TAI and is used for FQDN that ePDG selects and/or the FQDN that is used for the P-GW selection; In the said FQDN that sends to said DNS, comprise said RAI or TAI, said DNS is according to said FQDN inquiry ePDG and/or P-GW.
Further; Insert as the 3GPP of non-trust at WLAN, insert the EPC network, adopt between user terminal and the P-GW under the scene of S2c interface through ePDG; Said identification information is the service set SSID in the WLAN wireless network broadcast message of sending; User terminal makes up the FQDN that is used for the ePDG selection and/or is used for the FQDN that P-GW selects according to said SSID, in the said FQDN that sends to said DNS, is comprising said SSID, and said DNS is according to said FQDN inquiry ePDG and/or P-GW.
Further; Insert as the 3GPP of non-trust at WLAN; Insert the EPC network through ePDG, adopt between user terminal and the P-GW under the scene of S2c interface, said user terminal makes up the FQDN that is used for the ePDG selection and/or is used for the FQDN that P-GW selects according to said local gateway label; In the said FQDN that sends to said DNS, comprise said local gateway label, said DNS is according to said FQDN inquiry ePDG and/or P-GW.
Further, insert as the 3GPP of trusted, adopt between user terminal and the P-GW under the scene of S2c interface at WLAN, said identification information be with as the WLAN of access network 3GPP with covering
RAI or TAI in the wireless network broadcast message that UTRAN or E-UTRAN send; User terminal makes up the FQDN that is used for the P-GW selection according to said RAI or TAI; In the said FQDN that sends to said DNS, comprise said RAI or TAI, said DNS is according to said FQDN inquiry P-GW.
Further; Insert as the 3GPP of trusted at WLAN; Adopt between user terminal and the P-GW under the scene of S2c interface, said identification information is the SSID in the WLAN wireless network broadcast message of sending, and user terminal makes up according to said SSID and is used for the FQDN that P-GW selects; In the said FQDN that sends to said DNS, comprise said SSID, said DNS is according to said FQDN inquiry P-GW.
Further; Insert as the 3GPP of trusted at WLAN; Adopt under the scene of S2c interface between user terminal and the P-GW; User terminal makes up according to said local gateway label and is used for the FQDN that P-GW selects, and in the said FQDN that sends to said DNS, comprises said local gateway label, and said DNS is according to said FQDN inquiry P-GW.
Based on embodiments of the invention, the present invention also proposes a kind of system of selection of gateway, and this method comprises:
The packet data gateway ePDG of evolution makes up the FQDN that is used for packet data gateway P-GW selection according to the said ePDG sign or the local gateway label of configuration; In the said FQDN that sends to said DNS, comprise said ePDG sign or local gateway label, said DNS is according to said FQDN inquiry P-GW.
Based on embodiments of the invention, the present invention also proposes a kind of user terminal, and this user terminal comprises:
Receiver module is used to receive and the WLAN access network 3GPP UTRAN of covering together or the wireless network broadcast message of E-UTRAN; Or reception is used to receive WLAN access network wireless network broadcast message;
Make up module, be used for making up the FQDN that is used for the ePDG selection and/or being used for the FQDN that P-GW selects according to the identification information of wireless network broadcast message;
Enquiry module is used for sending said FQDN obtaining ePDG and/or P-GW to domain name server (DNS), the FQDN that the wherein said ePDG of being used for selects and/or be used for the FQDN that P-GW selects and comprise said identification information.
Further, the identification information in the said wireless network broadcast message is RAI, TAI or service set SSID.
Based on embodiments of the invention, the present invention also proposes a kind of user terminal, and this user terminal comprises;
Make up module, be used for making up the FQDN that is used for the ePDG selection and/or being used for the FQDN that P-GW selects according to the local gateway label;
Enquiry module is used for sending said FQDN obtaining ePDG and/or P-GW to domain name server (DNS), the FQDN that the wherein said ePDG of being used for selects and/or be used for the FQDN that P-GW selects and comprise said local gateway label.
Based on embodiments of the invention, the present invention also proposes a kind of selective system of gateway, and this system comprises:
First network element is used for sending the wireless network broadcast message of carrying identification information to user terminal;
User terminal is used for receiving said wireless network broadcast message and makes up according to the identification information of wireless network broadcast message and is used for the FQDN that ePDG selects and/or is used for the FQDN that P-GW selects, and the FQDN that will comprise said identification information sends to name server;
Name server is used to receive said FQDN, and is said user terminal inquiry ePDG and/or P-GW, to said user terminal feedback ePDG tabulation and/or P-GW tabulation.
Further, said first network element is and 3GPP UTRAN or the E-UTRAN of WLAN access network with covering that the identification information in the said wireless network broadcast message is RAI or TAI; Or
Said first network element is the WLAN access network, and the identification information in the said radio broadcasting message is SSID.
Further, said ePDG is used for making up the FQDN that is used for the P-GW selection according to the ePDG sign or the local gateway label of configuration, and sends the FQDN that comprises ePDG sign or local gateway label to the domain name server; The FQDN that the domain name server also is used for sending according to ePDG inquires about P-GW.
Based on embodiments of the invention, the present invention also proposes a kind of selective system of gateway, and this system comprises:
User terminal is used for making up the FQDN that is used for the ePDG selection and/or being used for the FQDN that P-GW selects according to the local gateway label, and the FQDN that will comprise said local gateway label sends to name server;
Name server is used to receive said FQDN, and is said user terminal inquiry ePDG and/or P-GW, to said user terminal feedback ePDG tabulation and/or P-GW tabulation.
Further, said ePDG is used for making up the FQDN that is used for the P-GW selection according to the ePDG sign or the local gateway label of configuration, and sends the FQDN that comprises ePDG sign or local gateway label to the domain name server; The domain name server also is used for inquiring about P-GW according to the said FQDN that ePDG sends.
Based on embodiments of the invention, the present invention also proposes a kind of data gateway ePDG of evolution, comprising:
First module is used for making up the FQDN that is used for packet data gateway P-GW selection according to sign or the local gateway label of the said ePDG that disposes;
Second module, the FQDN that is used for comprising said ePDG sign or local gateway label to the domain name server (DNS) transmission is with inquiry P-GW.
Among the present invention; User terminal makes up the global domain name FQDN of the data gateway ePDG inquiry that is used for evolution and/or is used for the FQDN that packet data gateway P-GW inquires about according to identification information in the wireless network broadcast message or local gateway label; Thereby trigger ePDG and/or the P-GW of DNS inquiry, and then realized shunting function in the wlan network data near wireless side.
Need to prove that DNS selects the ePDG and/or the P-GW that are equal to based on customer location to select according to FQDN inquiry ePDG that comprises identification information or local gateway label and/or P-GW.
Description of drawings
Fig. 1 is the structural representation of evolution grouping domain system;
Fig. 2 is that the gateway of embodiment of the present invention 1 is selected and user terminal access process sketch map;
Fig. 3 is that the gateway of embodiment of the present invention 2 is selected and user terminal access process sketch map;
Fig. 4 is that the gateway of embodiment of the present invention 3 is selected and user terminal access process sketch map;
Fig. 5 is that the gateway of embodiment of the present invention 4 is selected and user terminal access process sketch map;
Fig. 6 is that the gateway of embodiment of the present invention 5 is selected and user terminal access process sketch map;
Fig. 7 is that the gateway of embodiment of the present invention 6 is selected and user terminal access process sketch map;
Fig. 8 is that the gateway of embodiment of the present invention 7 is selected and user terminal access process sketch map;
Fig. 9 is that the gateway of embodiment of the present invention 8 is selected and user terminal access process sketch map;
Figure 10 is that the gateway of embodiment of the present invention 9 is selected and user terminal access process sketch map.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, below lift embodiment and with reference to accompanying drawing, to further explain of the present invention.
Embodiment 1
The scene that present embodiment is directed against is the 3GPP access of WLAN as non-trust, inserts the EPC network through ePDG, adopts the S2b interface between ePDG and the P-GW.The idiographic flow of this embodiment is as shown in Figure 2:
When inserting through the WLAN as non-trust 3GPP access network, step 201, user terminal need carry out insertion authority and authentication with the AAA Server of core net.The effect of AAAproxy is to transmit authorization identifying message to give AAA Server.Behind insertion authority and verification process, allow the user to insert the core net network through WLAN.
Step 202; User terminal is monitored and 3GPP UTRAN or Routing Area Identifier in E-UTRAN network broadcast message (the Routing Area Identity of WLAN access network with covering; RAI) or Location Area Identification (Tracking Area Indentity, TAI).
Step 203, user terminal according to the RAI that receives or TAI make up the global domain name that is used for ePDG and selects (Fully Qualified Domain Name, FQDN).FQDN behind the structure can be independent RAI FQDN or TAI FQDN, also can RAI or TAI information be joined in the middle of the current ePDGFQDN as new tag entry.
Step 204, user terminal start name server, and (Domain Name Server, DNS) inquiry sends to the inquiry that the DNS system carries out ePDG with the posttectonic FQDN that comprises above-mentioned RAI or TAI.
Step 205, DNS system will send to UE with the ePDG list information that FQDN is complementary in the response message that returns, comprising the address information of ePDG.The ePDG that the ePDG that is comprised in the list information comes out for the DNS system retrieves near the user radio side.
Step 206, user terminal selects an ePDG to use from the ePDG list information.
Step 207 is carried out (IKEv2) authentication of Internet Key Exchange version 2 and Internet protocol safety (IPSec) tunnel establishment procedure between user terminal and its selected ePDG.Carry out insertion authority and verification process between ePDG and the AAAServer.
Step 208, the ePDG of selection according to the ePDG sign of self configuration (Identifier, ID) information or local gateway label make up and are used for the FQDN that P-GW selects, purpose is to select the P-GW near this ePDG.Wherein the local gateway label is used to show the P-GW of ePDG expectation selection near this network element, can generate in this locality.Posttectonic FQDN can be independent ePDG ID FQDN or local gateway FQDN, also can ePDG sign or local gateway label information be joined among the current ePDG FQDN as new tag entry.
Step 209, ePDG starts the DNS query script, the FQDN that comprises above-mentioned ePDG sign or local gateway label that makes up is sent to the DNS system carry out the P-GW inquiry.
Step 210, the DNS system will send to ePDG according to network topology structure with the P-GW list information that FQDN is complementary in the response message that returns, comprising the address information of P-GW.The P-GW that the P-GW that is comprised in the list information comes out for the DNS system retrieves near ePDG.
Step 211, ePDG selects a P-GW to use from the P-GW list information.
Step 212-step 213 is set up the PMIP tunnel between ePDG and the P-GW.
Step 214, after the PMIP tunnel between ePDG foundation and P-GW, ePDG is passed through by the complete authentication of user terminal, and the IPsec tunnel is set up and is accomplished.
Step 215, ePDG sends to user terminal for user's IP address allocated with P-GW through IKEv2 message in step 213.
IPsec tunnel after this process of executing between user terminal and the ePDG, and the foundation completion of the PMIP tunnel between ePDG and the P-GW can be used for transmitting the up-downgoing data.
User terminal is initiated new PDN and is connected and set up process and this flow process is similar in the WLAN access network, the ePDG that different is when user terminal can select initially to adhere to also is above-mentioned steps 206 selected ePDG, no longer carries out the gravity treatment of ePDG.And the APN that ePDG can ask according to ePDG id/ local gateway label and the user of self configuration (Access Point Name APN) regenerates the selection that FQDN carries out P-GW, and mode is with step 208～step 211.
Embodiment 2
The scene that present embodiment is directed against is the 3GPP access of WLAN as non-trust, inserts the EPC network through ePDG, adopts the S2c interface between user terminal and the P-GW.The idiographic flow of this embodiment is as shown in Figure 3:
When inserting through the WLAN as non-trust 3GPP access network, step 301, user terminal need carry out insertion authority and authentication with the AAA Server of core net.The effect of AAAproxy is to transmit authorization identifying message to give AAA Server.Behind insertion authority and verification process, allow the user to insert the core net network through WLAN.
Step 302, user terminal are monitored with the WLAN access network and are covered RAI or TAI in 3GPP UTRAN or the E-UTRAN network broadcast message together.
Step 303, user terminal makes up the FQDN that is used for the ePDG selection and/or is used for the FQDN that P-GW selects according to RAI that receives or TAI.When user terminal need carry out the selection of ePDG and P-GW when wlan network initially inserts, set up after wlan network adheres to when user terminal and carry out the selection of P-GW when new PDN connects, when the user carries out the selection of ePDG when the 3GPP network switches to wlan network.User terminal can make up needed FQDN according to different scenes.
Step 304, user terminal start the DNS inquiry, and the posttectonic FQDN that comprises above-mentioned RAI or TAI is sent to the inquiry that the DNS system carries out ePDG and/or P-GW.FQDN behind the structure can be independent RAI FQDN or TAI FQDN, also can with RAI or TAI information join current ePDG with or P-GW FQDN in the middle of as new tag entry.
Step 305, DNS system will send to UE with ePDG and/or the P-GW list information that FQDN is complementary in the response message that returns, comprising the address information of ePDG and/or P-GW.EPDG and/or P-GW that ePDG that is comprised in the list information and/or P-GW come out for the DNS system retrieves near the user radio side.
Step 306, user terminal select an ePDG and/or P-GW to use from ePDG and/or P-GW list information.
Step 307, user terminal starts the IKEv2 tunnel establishment procedure.
Step 308, ePDG carries the implicit IP address that the IPsec tunnel uses that is used for that ePDG is the user terminal distribution in last IKEv2 message.
Step 309, the ipsec tunnel between user terminal and the ePDG are set up and are accomplished.
Step 310 is set up Security Association between user terminal and the P-GW, two stack mobile Internet Protocols (Dual Stack Mobile IP, DSMIP) message between protection UE and the P-GW.P-GW is user's distributing IP v6 home network prefix and issues user terminal in this process, and user terminal makes up home address through disposing automatically.
Step 311 and step 312 are set up the DSMIP tunnel through binding update messages between UE and the P-GW.
Step 313 and step 314 are accomplished the IP establishment of connection through said process.
User terminal is initiated new PDN and is connected and set up process and this flow process is similar in the WLAN access network, the ePDG that different is when user terminal can select initially to adhere to also is above-mentioned steps 306 selected ePDG, no longer carries out the gravity treatment of ePDG.And user terminal can regenerate the selection that FQDN carries out P-GW according to the APN of RAI or TAI and user's request, and mode is with step 304～step 305.
When the user switched to wlan network from the 3GPP network, user terminal need not carry out the selection of P-GW, and user terminal adopts the process of step 303～306 to search the ePDG near user side.
Embodiment 3
The scene that present embodiment is directed against is the 3GPP access of WLAN as trusted, adopts the S2c interface between user terminal and the P-GW.The idiographic flow of this embodiment is as shown in Figure 4:
When inserting through the WLAN as non-trust 3GPP access network, step 401, user terminal need carry out insertion authority and authentication with the AAA Server of core net.The effect of AAA proxy is to transmit authorization identifying message to give AAA Server.Behind insertion authority and verification process, allow the user to insert the core net network through WLAN.
Step 402, user terminal are monitored with the WLAN access network and are covered RAI or TAI in 3GPP UTRAN or the E-UTRAN network broadcast message together.
Step 403, user terminal makes up the FQDN that is used for the P-GW selection according to RAI that receives or TAI.
Step 404, user terminal start the DNS inquiry, and the posttectonic FQDN that comprises above-mentioned RAI or TAI is sent to the inquiry that the DNS system carries out P-GW.FQDN behind the structure can be independent RAI FQDN or TAI FQDN, also can RAI or TAI information be joined in the middle of the current P-GWFQDN as new tag entry.
Step 405, DNS system will send to UE with the P-GW list information that FQDN is complementary in the response message that returns, comprising the address information of P-GW.The P-GW that the P-GW that is comprised in the list information comes out for the DNS system retrieves near the user radio side.
Step 406, user terminal select a P-GW to use from the P-GW list information.
Step 407 is set up layer three and is connected between UE and the WLAN access network.Access network is user terminal distributing IP v4 address or IPv6 address/prefix after this process finishes.This address is a local ip address.
Step 408 is set up Security Association between user terminal and the P-GW, the DSMIP message between protection UE and the P-GW.P-GW is user's distributing IP v6 home network prefix and issues user terminal in this process, and user terminal makes up home address through disposing automatically.
Step 409 and step 410 are set up the DSMIP tunnel through binding update messages between UE and the P-GW.
User terminal is initiated new PDN and is connected and set up that process is identical with this flow process to repeat no more in the WLAN access network.
Embodiment 4
The scene that present embodiment is directed against is the 3GPP access of WLAN as non-trust, inserts the EPC network through ePDG, adopts the S2b interface between ePDG and the P-GW.The idiographic flow of this embodiment is as shown in Figure 5, this embodiment and embodiment 1 different being:
Step 502, and the service set in the user terminal monitoring WLAN access network broadcast (Service Set Identifier, SSID).
Step 503, user terminal make up according to the SSID that receives and are used for the FQDN that ePDG selects.FQDN behind the structure can be independent SSID FQDN, also can SSID information be joined in the middle of the current ePDGFQDN as new tag entry.
Step 504, user terminal start the DNS inquiry, and the posttectonic FQDN that comprises above-mentioned SSID is sent to the inquiry that the DNS system carries out ePDG.
All the other steps among this embodiment are identical with embodiment 1, do not do at this and give unnecessary details.
Embodiment 5
The scene that present embodiment is directed against is the 3GPP access of WLAN as non-trust, inserts the EPC network through ePDG, adopts the S2c interface between user terminal and the P-GW.The idiographic flow of this embodiment is as shown in Figure 6, this embodiment and embodiment 2 different being:
Step 602, user terminal are monitored the SSID in the WLAN access network broadcast.
Step 603, user terminal is according to receiving that SSID makes up the FQDN that is used for ePDG and/or P-GW selection.FQDN behind the structure can be independent SSID FQDN, also can SSID information be joined in the middle of current ePDG and/or the P-GW FQDN as new tag entry.
Step 604, user terminal start the DNS inquiry, and the posttectonic FQDN that comprises above-mentioned SSID is sent to the inquiry that the DNS system carries out ePDG and/or P-GW.
All the other steps among this embodiment are identical with embodiment 2, do not do at this and give unnecessary details.
Embodiment 6
The scene that present embodiment is directed against is the 3GPP access of WLAN as non-trust, adopts the S2c interface between user terminal and the P-GW.The idiographic flow of this embodiment is as shown in Figure 7, this embodiment and embodiment 3 different being:
Step 702, user terminal are monitored the SSID in the WLAN access network broadcast.
Step 703, user terminal is used for the FQDN that P-GW selects according to receiving that SSID makes up.FQDN behind the structure can be independent SSID FQDN, also can SSID information be joined in the middle of the current P-GWFQDN as new tag entry.
Step 704, user terminal start the DNS inquiry, the posttectonic FQDN that comprises above-mentioned SSID is sent to the DNS system carry out the P-GW inquiry.
All the other steps among this embodiment are identical with embodiment 3, do not do at this and give unnecessary details.
Embodiment 7
The scene that present embodiment is directed against is the 3GPP access of WLAN as non-trust, inserts the EPC network through ePDG, adopts the S2b interface between ePDG and the P-GW.The idiographic flow of this embodiment is as shown in Figure 8, this embodiment and embodiment 1 different being:
Step 802, user terminal make up according to the local gateway label and are used for the FQDN that ePDG selects.FQDN behind the structure can be independent local gateway FQDN, also can the local gateway label information be joined in the middle of the current ePDG FQDN as new tag entry.
Local gateway label in the present embodiment is used to show the ePDG gateway of user expectation selection near wireless side, can generate in this locality.User terminal can logic-based when the FQDN that select to use the local gateway label to make up to be used for ePDG to select:
No matter a) whether user terminal can know the VPLMN ID of its place network and/or the VPLMN ID of its affiliated home network, user terminal all uses the local gateway label to make up the FQDN that FQDN is used for the ePDG selection;
B) if can not inquire the VPLMN ID that suitable ePDG and user terminal can be known its place network according to a) the said operation of step, user terminal makes up according to VPLMN ID and is used for the FQDN that ePDG selects so;
C) if according to a) or b) the said operation of step can not inquire the HPLMN ID that suitable ePDG and user terminal can be known its home network, user terminal makes up according to HPLMN ID and is used for the FQDN that ePDG selects so.
Need to prove that present embodiment is not done qualification for the FQDN when user terminal adopts local gateway label structure to be used for the ePDG selection, all possible logic includes within the scope of the invention.
Step 803; Because the local gateway label is the parameter of expression wish; Therefore the information that does not comprise any relevant user terminal location need the ePDG according to network topology structure outgoing position and this DNS peer when receiving this type of FQDN that comprises local gateway label inquiry of DNS system.
All the other steps among this embodiment are identical with embodiment 1, do not do at this and give unnecessary details.
Embodiment 8
The scene that present embodiment is directed against is the 3GPP access of WLAN as non-trust, inserts the EPC network through ePDG, adopts the S2c interface between user terminal and the P-GW.The idiographic flow of this embodiment is as shown in Figure 9, this embodiment and embodiment 2 different being:
Step 902, user terminal make up the FQDN that is used for ePDG and/or P-GW selection according to the local gateway label.Similar with step 303; When user terminal need carry out the selection of ePDG and P-GW when wlan network initially inserts; Set up after wlan network adheres to when user terminal and to carry out the selection of P-GW when new PDN connects, when the user carries out the selection of ePDG when the 3GPP network switches to wlan network.User terminal can make up needed FQDN according to different scenes.FQDN behind the structure can be independent local gateway FQDN, also can the local gateway label information be joined in the middle of current ePDG and/or the P-GW FQDN as new tag entry.
Local gateway label in the present embodiment is used to show that the user expectation selection is near wireless side ePDG and/or P-GW gateway.
User terminal can be based on the described logic of step 802 when the FQDN that selects to use local gateway label structure to be used for the ePDG selection, and present embodiment is not done and given unnecessary details.
User terminal can be based on following logic when the FQDN that select to use the local network label to make up to be used for P-GW to select:
A) user asks the PCO in the PDN connection procedure to obtain the P-GW address through adhering to perhaps;
B) obtain the P-GW address through set up the IKEV2 tunnel establishment procedure to ePDG;
C) if a), b) if two steps received that the IP address of P-GW and user terminal do not know the HA in the current attach to network, can obtain the IP address of P-GW so through the DHCP mode;
D) if above-mentioned three steps all do not obtain the IP address of P-GW, user terminal is inquired about corresponding P-GW IP address through the FQDN startup DNS that the local gateway label makes up P-GW so.Need to prove that present embodiment is not done qualification for the FQDN when user terminal adopts local gateway label structure to be used for the P-GW selection, all possible logic includes within the scope of the invention.
Step 903; User terminal starts the DNS query script and searches ePDG and/or P-GW near wireless side; Because the local gateway label is the parameter of expression wish; Therefore the information that does not comprise any relevant customer location need ePDG and/or the P-GW according to network topology structure outgoing position and this DNS peer when receiving this type of FQDN that comprises local gateway label inquiry of DNS system.
All the other steps among this embodiment are identical with embodiment 2, do not do at this and give unnecessary details.
Embodiment 10
The scene that present embodiment is directed against is the 3GPP access of WLAN as trusted, adopts the S2c interface between user terminal and the P-GW.The idiographic flow of this embodiment is shown in figure 10, this embodiment and embodiment 3 different being:
Step 1002, user terminal make up according to the local gateway label and are used for the FQDN that P-GW selects.
FQDN behind the structure can be independent local gateway FQDN, also can the local gateway label information be joined in the middle of the current P-GW FQDN as new tag entry.
User terminal when the FQDN that select to use the local gateway label to make up to be used for P-GW to select based on logic such as step 902 said.
Step 1003; User terminal starts the DNS query script and searches the P-GW near wireless side; Because the local gateway label is the parameter of expression wish; Therefore the information that does not comprise any relevant customer location need the P-GW according to network topology structure outgoing position and this DNS peer when receiving this type of FQDN that comprises local gateway label inquiry of DNS system.
All the other steps among this embodiment are identical with embodiment 3, do not do at this and give unnecessary details.
Embodiment 11
Based on preceding method embodiment, this embodiment proposes a kind of user terminal, and this user terminal comprises:
Receiver module is used to receive and the WLAN access network 3GPP UTRAN of covering together or the wireless network broadcast message of E-UTRAN; Or reception is used to receive WLAN access network wireless network broadcast message;
Make up module, be used for making up the FQDN that is used for the ePDG selection and/or being used for the FQDN that P-GW selects according to the identification information of wireless network broadcast message;
Enquiry module is used for sending said FQDN obtaining ePDG and/or P-GW to domain name server (DNS), the FQDN that the wherein said ePDG of being used for selects and/or be used for the FQDN that P-GW selects and comprise said identification information.
Preferably, the identification information in the said wireless network broadcast message is RAI, TAI or service set
SSID。
Embodiment 12
Based on preceding method embodiment, this embodiment proposes a kind of user terminal, and this user terminal comprises:
Make up module, be used for making up the FQDN that is used for the ePDG selection and/or being used for the FQDN that P-GW selects according to the local gateway label;
Enquiry module is used for sending said FQDN obtaining ePDG and/or P-GW to domain name server (DNS), the FQDN that the wherein said ePDG of being used for selects and/or be used for the FQDN that P-GW selects and comprise said local gateway label.
Because this user terminal is realized based on said method embodiment; Therefore functional module that this user terminal comprised or functional unit all are to establish for the steps flow chart among the realization preceding method embodiment; Its function all can directly derive from the steps flow chart of said method embodiment, and based on different scenes, the concrete function of each module is referring to preceding method embodiment; For saving space, repeat no more here.
Embodiment 13
Based on preceding method embodiment, this embodiment provides a kind of selective system of gateway, and this system comprises:
First network element is used for sending the wireless network broadcast message of carrying identification information to user terminal;
User terminal is used for receiving said wireless network broadcast message and makes up according to the identification information of wireless network broadcast message and is used for the FQDN that ePDG selects and/or is used for the FQDN that P-GW selects, and the FQDN that will comprise said identification information sends to name server;
Name server is used to receive said FQDN, and is said user terminal inquiry ePDG and/or P-GW, to said user terminal feedback ePDG tabulation and/or P-GW tabulation.
Further, said first network element is and 3GPP UTRAN or the E-UTRAN of WLAN access network with covering that the identification information in the said wireless network broadcast message is RAI or TAI; Or
Said first network element is the WLAN access network, and the identification information in the said radio broadcasting message is SSID.
Said ePDG is used for making up the FQDN that is used for the P-GW selection according to the ePDG sign or the local gateway label of configuration, and sends the FQDN that comprises ePDG sign or local gateway label to the domain name server;
The FQDN that the domain name server also is used for sending according to ePDG inquires about P-GW.
Embodiment 14
Based on preceding method embodiment, this embodiment provides a kind of selective system of gateway, and this system comprises:
User terminal is used for making up the FQDN that is used for the ePDG selection and/or being used for the FQDN that P-GW selects according to the local gateway label, and the FQDN that will comprise said local gateway label sends to name server;
Name server is used to receive said FQDN, and is said user terminal inquiry ePDG and/or P-GW, to said user terminal feedback ePDG tabulation and/or P-GW tabulation.
Further, said ePDG is used for making up the FQDN that is used for the P-GW selection according to the ePDG sign or the local gateway label of configuration, and sends the FQDN that comprises ePDG sign or local gateway label to the domain name server; The domain name server also is used for inquiring about P-GW according to the said FQDN that ePDG sends.
Embodiment 15
Based on preceding method embodiment, this embodiment provides a kind of system of selection of gateway, and this method comprises:
The packet data gateway ePDG of evolution makes up the FQDN that is used for packet data gateway P-GW selection according to the said ePDG sign or the local gateway label of configuration; In the said FQDN that sends to said DNS, comprise said ePDG sign or local gateway label, said DNS is according to said FQDN inquiry P-GW.
Correspondingly, the present invention also proposes a kind of data gateway ePDG of evolution, comprising:
First module is used for making up the FQDN that is used for packet data gateway P-GW selection according to sign or the local gateway label of the said ePDG that disposes;
Second module, the FQDN that is used for comprising said ePDG sign or local gateway label to the domain name server (DNS) transmission is with inquiry P-GW.
Because this system embodiment realizes based on preceding method embodiment; Therefore functional module that this system comprised or functional unit all are to establish for the steps flow chart among the realization preceding method embodiment; Its function all can directly derive from the steps flow chart of said method embodiment, and based on different scenes, the concrete function of each module is referring to preceding method embodiment; For saving space, repeat no more here.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.
Claims (21)
1. the system of selection of a gateway is characterized in that, this method comprises:
User terminal comprises identification information or local gateway label in the global domain name FQDN that sends to domain name server (DNS), said DNS is according to said FQDN inquiry packets gateway;
Said packet gateway comprises the packet data gateway ePDG and/or the packet data gateway P-GW of evolution.
2. method according to claim 1; It is characterized in that; Insert as the 3GPP of non-trust at WLAN WLAN; Insert evolution block core EPC network through ePDG; Adopt between ePDG and the P-GW under the scene of S2b interface, said identification information be with the wireless network broadcast message of sending with the UMTS land radio access web E-UTRAN of UMTS land radio access web UTRAN among the third generation partner program 3GPP that covers or evolution as the WLAN of access network in RAI or TAI, user terminal makes up the FQDN that is used for the ePDG selection according to said RAI or TAI; In the said FQDN that sends to said DNS, comprise said RAI or TAI, said DNS is according to said FQDN inquiry ePDG.
3. method according to claim 1; It is characterized in that; Insert as the 3GPP of non-trust at WLAN, insert evolution block core EPC network, adopt between ePDG and the P-GW under the scene of S2b interface through ePDG; Said identification information is the service set SSID in the WLAN wireless network broadcast message of sending; User terminal makes up according to said SSID and is used for the FQDN that ePDG selects, and in the said FQDN that sends to said DNS, comprises said SSID, and said DNS is according to said FQDN inquiry ePDG.
4. method according to claim 1; It is characterized in that, insert as the 3GPP of non-trust, insert evolution block core net EPC network through ePDG at WLAN; Adopt under the scene of S2b interface between ePDG and the P-GW; Said user terminal makes up according to said local gateway label and is used for the FQDN that ePDG selects, and in the said FQDN that sends to said DNS, comprises said local gateway label, and said DNS is according to said FQDN inquiry ePDG.
5. according to claim 2 or 3 or 4 described methods, it is characterized in that said method also comprises:
Said ePDG makes up the FQDN that is used for the P-GW selection according to the said ePDG sign or the local gateway label of configuration, in the said FQDN that sends to said DNS, comprises said ePDG sign or local gateway label, and said DNS is according to said FQDN inquiry P-GW.
6. method according to claim 1; It is characterized in that; Insert as the 3GPP of non-trust at WLAN, insert the EPC network, adopt between user terminal and the P-GW under the scene of S2c interface through ePDG; Said identification information be with the wireless network broadcast message of sending with 3GPP UTRAN that covers or E-UTRAN as the WLAN of access network in RAI or TAI; User terminal makes up the FQDN that is used for the ePDG selection and/or is used for the FQDN that P-GW selects according to said RAI or TAI, in the said FQDN that sends to said DNS, is comprising said RAI or TAI, and said DNS is according to said FQDN inquiry ePDG and/or P-GW.
7. method according to claim 1; It is characterized in that; Insert as the 3GPP of non-trust at WLAN, insert the EPC network, adopt between user terminal and the P-GW under the scene of S2c interface through ePDG; Said identification information is the service set SSID in the WLAN wireless network broadcast message of sending; User terminal makes up the FQDN that is used for the ePDG selection and/or is used for the FQDN that P-GW selects according to said SSID, in the said FQDN that sends to said DNS, is comprising said SSID, and said DNS is according to said FQDN inquiry ePDG and/or P-GW.
8. method according to claim 1; It is characterized in that, insert as the 3GPP of non-trust, insert the EPC network through ePDG at WLAN; Adopt under the scene of S2c interface between user terminal and the P-GW; Said user terminal makes up the FQDN that is used for the ePDG selection and/or is used for the FQDN that P-GW selects according to said local gateway label, in the said FQDN that sends to said DNS, is comprising said local gateway label, and said DNS is according to said FQDN inquiry ePDG and/or P-GW.
9. method according to claim 1; It is characterized in that; Insert as the 3GPP of trusted at WLAN; Adopt between user terminal and the P-GW under the scene of S2c interface, said identification information be with the wireless network broadcast message of sending with 3GPP UTRAN that covers or E-UTRAN as the WLAN of access network in RAI or TAI, user terminal makes up the FQDN that is used for the P-GW selection according to said RAI or TAI; In the said FQDN that sends to said DNS, comprise said RAI or TAI, said DNS is according to said FQDN inquiry P-GW.
10. method according to claim 1; It is characterized in that, insert as the 3GPP of trusted, adopt between user terminal and the P-GW under the scene of S2c interface at WLAN; Said identification information is the SSID in the WLAN wireless network broadcast message of sending; User terminal makes up according to said SSID and is used for the FQDN that P-GW selects, and in the said FQDN that sends to said DNS, comprises said SSID, and said DNS is according to said FQDN inquiry P-GW.
11. method according to claim 1; It is characterized in that; Insert as the 3GPP of trusted at WLAN, adopt between user terminal and the P-GW under the scene of S2c interface, user terminal makes up according to said local gateway label and is used for the FQDN that P-GW selects; In the said FQDN that sends to said DNS, comprise said local gateway label, said DNS is according to said FQDN inquiry P-GW.
12. the system of selection of a gateway is characterized in that, this method comprises:
The packet data gateway ePDG of evolution makes up the FQDN that is used for packet data gateway P-GW selection according to the said ePDG sign or the local gateway label of configuration; In the said FQDN that sends to said DNS, comprise said ePDG sign or local gateway label, said DNS is according to said FQDN inquiry P-GW.
13. a user terminal is characterized in that, this user terminal comprises:
Receiver module is used to receive and the WLAN access network 3GPP UTRAN of covering together or the wireless network broadcast message of E-UTRAN; Or reception is used to receive WLAN access network wireless network broadcast message;
Make up module, be used for making up the FQDN that is used for the ePDG selection and/or being used for the FQDN that P-GW selects according to the identification information of wireless network broadcast message;
Enquiry module is used for sending said FQDN obtaining ePDG and/or P-GW to domain name server (DNS), the FQDN that the wherein said ePDG of being used for selects and/or be used for the FQDN that P-GW selects and comprise said identification information.
14. user terminal according to claim 13 is characterized in that,
Identification information in the said wireless network broadcast message is RAI, TAI or service set SSID.
15. a user terminal is characterized in that, this user terminal comprises:
Make up module, be used for making up the FQDN that is used for the ePDG selection and/or being used for the FQDN that P-GW selects according to the local gateway label;
Enquiry module is used for sending said FQDN obtaining ePDG and/or P-GW to domain name server (DNS), the FQDN that the wherein said ePDG of being used for selects and/or be used for the FQDN that P-GW selects and comprise said local gateway label.
16. the selective system of a gateway is characterized in that, this system comprises:
First network element is used for sending the wireless network broadcast message of carrying identification information to user terminal;
User terminal is used for receiving said wireless network broadcast message and makes up according to the identification information of wireless network broadcast message and is used for the FQDN that ePDG selects and/or is used for the FQDN that P-GW selects, and the FQDN that will comprise said identification information sends to name server;
Name server is used to receive said FQDN, and is said user terminal inquiry ePDG and/or P-GW, to said user terminal feedback ePDG tabulation and/or P-GW tabulation.
17. system according to claim 16 is characterized in that,
Said first network element is and 3GPP UTRAN or the E-UTRAN of WLAN access network with covering that the identification information in the said wireless network broadcast message is RAI or TAI; Or
Said first network element is the WLAN access network, and the identification information in the said radio broadcasting message is SSID.
18. system according to claim 17 is characterized in that, said system also comprises ePDG,
Said ePDG is used for making up the FQDN that is used for the P-GW selection according to the ePDG sign or the local gateway label of configuration, and sends the FQDN that comprises ePDG sign or local gateway label to the domain name server;
The FQDN that the domain name server also is used for sending according to ePDG inquires about P-GW.
19. the selective system of a gateway is characterized in that, this system comprises:
User terminal is used for making up the FQDN that is used for the ePDG selection and/or being used for the FQDN that P-GW selects according to the local gateway label, and the FQDN that will comprise said local gateway label sends to name server;
Name server is used to receive said FQDN, and is said user terminal inquiry ePDG and/or P-GW, to said user terminal feedback ePDG tabulation and/or P-GW tabulation.
20. system according to claim 19 is characterized in that, said system also comprises ePDG,
Said ePDG is used for making up the FQDN that is used for the P-GW selection according to the ePDG sign or the local gateway label of configuration, and sends the FQDN that comprises ePDG sign or local gateway label to the domain name server;
The domain name server also is used for inquiring about P-GW according to the said FQDN that ePDG sends.
21. the packet data gateway ePDG of an evolution is characterized in that, comprising:
First module is used for making up the FQDN that is used for packet data gateway P-GW selection according to sign or the local gateway label of the said ePDG that disposes;
Second module, the FQDN that is used for comprising said ePDG sign or local gateway label to the domain name server (DNS) transmission is with inquiry P-GW.
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| CN201110190843.9A CN102752830B (en) | 2011-04-20 | 2011-06-28 | Selection method, implementing device and system for gateways |
| PCT/CN2012/072378 WO2012142889A1 (en) | 2011-04-20 | 2012-03-15 | Gateway selection method, implementation device and system |
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| CN102752830B (en) | 2017-04-12 |
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