Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W40/00—Communication routing or communication path finding
  • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
  • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
  • Y02D30/00—Reducing energy consumption in communication networks
  • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

• Gateway selection method server, user equipment, gateway, and packet data system.
• present application claims priority to Chinese Patent Application No. 201210159640.8, filed on May 22, 2012, the content of .
• the present invention relates to network technologies, and in particular, to a gateway selection method when a user equipment accesses a 3GPP network, a home subscription server, a user equipment for selecting a gateway when accessing a 3GPP network, an evolved packet data gateway, and an evolution. Packet data system.
• An evolved packet data system (Evolved Packet System, EPS, Evolved Packet Data System) supports the use of non-3GPP IP (3rd Generation Partnership Project Internet Protocol, 3GPP IP, 3rd Generation Mobile Communication Standardization Partner Project Internet Protocol) access network Access to the evolved packet data core network (Evolved Packet Core, EPC, Evolved Packet Data Core Network) of 3GPP (3rd Generation Partnership Project, 3GPP, 3GPP) to improve EPS coverage and low 3 GPP access network load.
• the 3GPP core network determines whether the non-3GPP IP access network is a trusted network or an untrusted network according to whether the authentication and authorization process adopted by the non-3GPP IP access network satisfies the 3GPP security requirements.
• the existing gateway selection mechanism does not consider the location of the user equipment (UE, user equipment) and the distance between the gateways.
• the routing of the UE to the Packet Data Network Gateway includes the evolved packet data gateway (Evolved Packet Data) Gateway, ePDG, Evolved Packet Data Gateway) selection and PDN GW selection.
• the existing 3GPP 23.402 protocol uses a separate selection mechanism for ePDG and PDN GW.
• the ePDG selection includes: in the non-3GPP access network access authentication/authorization process, the UE utilizes the gateway selection function on the UE, and uses the ePDG FQDN (Full Qualified Domain Name, FQDN, full domain name) from the local domain name system server. (Domain Name System Server, DNS server, Domain Name System Server) Obtain an ePDG IP (Internet Protocol, IP, Internet Protocol) address list. The UE randomly selects an IP address from the IP address list as the destination ePDG IP address. In this process, the UE forms the ePDG FQDN with the PLMN ID (Public Land Mobile Network ID) of the network as the operator ID.
• PLMN ID Public Land Mobile Network ID
• the ePDG selection includes: The UE has selected an initial ePDG and has established an IPsec tunnel with the initial ePDG.
• IPsec Internet Protocol Security
• the initial ePDG sends the non-3GPP network identifier to the HSS/AAA server (Home Subscriber Server or Authentication Authorization Accounting, Ownership Signing Server or Authentication/Authorization/Accounting Server).
• the HSS/AAA server finds the target ePDG that is closer to the UE and transmits the target ePDG selection information to the initial ePDG.
• the initial ePDG forwards the target ePDG information to the UE.
• the UE establishes an IPsec tunnel with the target ePDG and authenticates/authorizes the tunnel in the 3GPP network. The UE then disconnects the IPsec tunnel with the initial ePDG.
• the PDN GW selection includes: The PDN GW selection function on the ePDG interacts with the 3GPP AAA Server/Proxy to obtain PDN GW selection information in the IPsec tunnel authentication/authorization process, and the selection information is provided by the HSS to the 3GPP AAA Server/Proxy.
• the selection information includes a PDN GW ID (ID, ID, ID), or includes an APN (Access Point Name) and an indication.
• the PDN GW ID includes an FQDN or includes an IP address and an APN; the indication indicates whether the PDN GW is allocated from a Visited Public Land Mobile Network (VPLMN, visited public land mobile network).
• the PDN GW selection function on the ePDG sends the gateway selection information to the DNS server through the interaction process with the DNS server, and obtains the PDN GW IP address from the DNS server.
• the routing of the UE->ePDG->PDN GW is not optimal.
• the UE selects the ePDG1 with the least IP forwarding (such as 1) with the UE by using the existing ePDG selection mechanism, and the ePDG1 uses the existing PDN GW selection mechanism to select the PDN with the least IP forwarding (such as 3 times) with the ePDG1.
• GW1 at this time, the UE needs at least 4 IP transitions to the PDN GW1.
• the embodiment of the present invention provides a gateway selection method, a server, a user equipment, a gateway, and a packet data system, which are used for user equipment to jointly select a gateway in a packet data network according to a UE location when accessing a 3GPP core network, thereby The optimal route between the UE and the destination gateway is implemented.
• a first aspect of the embodiments of the present invention provides a gateway selection method for a user equipment to access a 3GPP network, including:
• a second aspect of the embodiments of the present invention provides a gateway selection method when accessing a 3GPP network, including:
• a third aspect of the embodiments of the present invention provides a gateway selection method for a user equipment to access a 3GPP network, including:
• Receiving PDN GW selection information in the best routing information sent by the user equipment where the optimal routing information is used by the home subscription server according to the location information of the access network used by the user equipment, and the evolved packet data gateway ePDG and The distance information between the packet data network gateway PDN GW is obtained, and the optimal routing information includes ePDG selection information and PDN GW selection information; and the corresponding PDN GW is selected according to the PDN GW selection information.
• a fourth aspect of the embodiments of the present invention provides a home subscription server, including: an optimal route obtaining unit, configured to use location information of an access network used by a user equipment, and distance information between gateways in a packet data network. Obtaining optimal routing information of the user equipment to the destination gateway;
• the routing information sending unit is configured to send the best routing information of the user equipment to the destination gateway to the user equipment, so that the user equipment selects to the corresponding destination gateway according to the best routing information.
• a fifth aspect of the embodiments of the present invention provides a user equipment for selecting a gateway when accessing a 3GPP network, including:
• a routing information receiving unit configured to receive the best routing information of the user equipment to the destination gateway returned by the home subscription server, where the optimal routing information is used by the home subscription server according to the location information of the access network used by the user equipment And the distance information between the gateways in the packet data network is obtained;
• a sixth aspect of the embodiments of the present invention provides an evolved packet data gateway, including: a selection information receiving unit, configured to receive PDN GW selection information in an optimal routing information sent by a user equipment, where the optimal routing information is Obtained by the home subscription server according to the location information of the access network used by the user equipment and the distance information between the evolved packet data gateway ePDG and the packet data network gateway PDN GW, where the optimal routing information includes ePDG selection.
• Information and PDN GW selection information including:
• a seventh aspect of the embodiments of the present invention provides an evolved packet data system, including the above-mentioned home subscription server, and the evolved packet data gateway.
• the technical effect of the gateway selection method, the server, the user equipment, the gateway, and the packet data system provided by the embodiment of the present invention is that the HSS (Home Subscriber Server) is based on the location information of the access network used by the UE and the packet data network. Distance between gateways The information can be obtained from the user equipment to the destination gateway as a whole, and the best routing information is sent to the UE, so that the UE can select the best destination gateway according to the best routing information, thereby implementing the UE to the destination gateway.
• the best route. 1 is a flowchart of a method for selecting a gateway when a user equipment accesses a 3GPP network according to an embodiment of the present invention
• FIG. 2 is a flowchart of another method for selecting a gateway when accessing a 3GPP network according to an embodiment of the present invention
• FIG. 3 is a flowchart of still another method for selecting a gateway when a user equipment accesses a 3GPP network according to an embodiment of the present disclosure
• FIG. 4 is a network structure diagram of a UE in an untrusted non-3GPP network that is used by a gateway selection method according to an embodiment of the present invention to access a 3GPP core network through an S2b interface;
• FIG. 5 is a signaling flowchart of a gateway selection method according to Embodiment 1 of the present invention.
• FIG. 6 is a network structural diagram of a UE in an untrusted non-3GPP network that is used by a gateway selection method according to an embodiment of the present invention to access a 3GPP core network through an S2c interface;
• FIG. 7 is a signaling flowchart of a gateway selection method according to Embodiment 2 of the present invention.
• FIG. 8 is a schematic structural diagram of a home subscription server according to an embodiment of the present disclosure.
• FIG. 9 is a schematic structural diagram of a user equipment for selecting a gateway when accessing a 3GPP network according to an embodiment of the present disclosure.
• FIG. 10 is a schematic structural diagram of an evolved packet data gateway according to an embodiment of the present invention
• FIG. 11 is a schematic structural diagram of an evolved packet data system according to an embodiment of the present invention.
• 1 is a flowchart of a gateway selection method when a user equipment accesses a 3GPP network according to an embodiment of the present invention. This embodiment describes the gateway selection process from the HSS side. As shown in FIG. 1, the method includes:
• Step 11 According to the location information of the access network used by the user equipment and the distance information between the gateways in the packet data network, the optimal routing information of the user equipment to the destination gateway is obtained.
• the access network used by the user equipment may be a 3GPP network or a non-3GPP network.
• the distance information may be geographical distance information or the number of Internet Protocol (IP) hops.
• IP Internet Protocol
• the distance information between the gateways in the packet data network may be the distance between the ePDG and the PDN GW, or the distance between the serving gateway and the PDN GW.
• the HSS obtains the optimal routing information of the user equipment to the PDN GW according to the location information of the access network used by the user equipment and the distance information between the ePDG and the PDN GW, where the optimal routing information includes the ePDG selection information and the PDN GW. Select the information.
• Step 12 Send the optimal routing information of the user equipment to the destination gateway to the user equipment, so that the user equipment selects the corresponding destination gateway according to the optimal routing information.
• the HSS sends the best routing information of the user equipment to the PDN GW to the user equipment, so that the user equipment selects the corresponding ePDG according to the ePDG selection information in the optimal routing information, and the corresponding ePDG is based on the best
• the PDN GW selection information in the routing information is selected to the corresponding PDN GW.
• the HSS can obtain the optimal routing information of the user equipment to the PDN GW according to the location information of the access network used by the UE and the distance information between the ePDG and the PDN GW.
• the information is sent to the UE, so that the UE can select the best gateway according to the best routing information, so as to implement the optimal route from the UE to the PDN GW.
• the method further includes:
• Non-3GPP access network identifier (ID) sent by the user equipment, where the non-3GPP access network is an access network used by the user equipment.
• the distance information between the ePDG and the PDN GW is obtained according to the locally stored ePDG identifier (ePDG ID).
• receiving the non-3GPP access network identifier sent by the user equipment including:
• the HSS completes the optimal routing of the UE to the PDN GW, which reduces the IPsec tunnel establishment process and reduces the tunnel through the 3GPP network.
• the rights/authorization process reduces the IPsec tunnel removal process, which reduces network load.
• the best routing information of the user equipment to the destination gateway is sent to the user equipment, including:
• the access network used by the user equipment may also be a 3GPP network.
• the access network used by the user equipment is a 3GPP network
• the corresponding network structure, message, or signaling may be according to the specific situation of the 3GPP network.
• the basic inventive idea can refer to the case when the access network used by the user equipment is a non-3GPP network, which is also within the protection scope of the present invention.
• FIG. 2 is a flowchart of another method for selecting a gateway when accessing a 3GPP network according to an embodiment of the present invention.
• the gateway selection method is described from the UE side.
• the method includes the following steps: Step 21: Receive, by the home subscription server, optimal routing information of the user equipment to the destination gateway, where the optimal routing information is signed by the home registration.
• the server is obtained according to the location information of the access network used by the user equipment and the distance information between the gateways in the packet data network.
• the optimal routing information is determined by the home subscription server according to the location information of the access network used by the user equipment, and the ePDG and the PDN GW.
• the distance information is obtained. For details, refer to the description in the embodiment shown in FIG. 1 of the foregoing method, including ePDG selection information and PDN GW selection information.
• the distance information is geographical distance information or the number of IP hops.
• the distance information between the gateways in the packet data network may be the distance between the ePDG and the PDN GW, or the distance between the serving gateway and the PDN GW.
• Step 22 Select the corresponding destination gateway according to the optimal routing information. For example, the UE selects the corresponding ePDG according to the ePDG selection information in the best routing information.
• the method may further include:
• Non-3GPP access network identifier Sending a non-3GPP access network identifier to the home subscription server, so that the home subscription server learns the access network used by the user equipment according to the non-3GPP access network identifier and the locally stored non-3GPP access network identifier and capability.
• Location information where the transmitted non-3GPP access network identifier is an access network identifier used by the user equipment.
• sending the non-3GPP access network identifier to the home subscription server includes: sending an authentication authorization request message to the home subscription server, where the authentication authorization request message includes a non-3GPP access network identifier. That is, in the process of the initial access authentication/authorization of the UE, the HSS completes the optimal routing of the UE to the PDN GW, which reduces the IPsec tunnel establishment process and reduces the tunnel authentication through the 3GPP network. / Authorization process, reducing the IPsec tunnel deletion process, thereby reducing network load.
• receiving the best routing information of the user equipment to the destination gateway returned by the home subscription server includes:
• the optimal routing information includes ePDG selection information and PDN GW selection information.
• the method further includes:
• the PDN GW selection information in the best routing information is sent to the corresponding ePDG, so that the corresponding ePDG selects the corresponding PDN GW according to the PDN GW selection information.
• the UE selects a corresponding gateway by receiving the best routing information of the UE to the PDN GW sent by the HSS, because the HSS is based on the location information of the access network used by the UE and the distance information between the ePDG and the PDN GW.
• the optimal routing information of the user equipment to the PDN GW can be obtained as a whole, and the optimal routing information is sent to the UE by the UE, and the UE selects the corresponding gateway according to the optimal routing information, so that the optimal route from the UE to the PDN GW is implemented.
• FIG. 3 is a flowchart of still another method for selecting a gateway when a user equipment accesses a 3GPP network according to an embodiment of the present invention.
• This embodiment describes a gateway selection method from the ePDG side, as shown in FIG. 3, including:
• Step 31 Receive PDN GW selection information in the best routing information sent by the user equipment,
• the optimal routing information is obtained by the home subscription server according to the location information of the access network used by the user equipment and the distance information between the ePDG and the PDN GW.
• the optimal routing information is described in the foregoing method. The description includes the ePDG selection information and the PDN GW selection information;
• Step 32 Select a corresponding PDN GW according to the PDN GW selection information.
• ePDG that performs step 31 and step 32 above is the ePDG specified in the best routing information, and has been selected by the UE.
• the ePDG receives the PDN GW selection information in the best routing information sent by the UE, and selects the corresponding PDN GW according to the PDN GW selection information sent by the UE, because the HSS is based on the access network used by the UE.
• the location information and the distance information between the ePDG and the PDN GW can obtain the best routing information from the user equipment to the PDN GW as a whole, by sending the best routing information to the UE, and the UE selects the corresponding ePDG according to the optimal routing information.
• the ePDG selected by the UE selects the corresponding PDN GW according to the PDN GW selection information in the best routing information sent by the UE, and implements the optimal route from the UE to the PDN GW.
• the access network used by the user equipment may also be a 3GPP network.
• the access network used by the user equipment is a 3GPP network
• the corresponding network structure, message, or signaling may be according to the specific situation of the 3GPP network.
• the basic inventive idea can refer to the case when the access network used by the user equipment is a non-3GPP network, which is also within the protection scope of the present invention.
• the gateway selection method will be further described in detail from a global perspective by using the first embodiment and the second embodiment.
• the UE in the untrusted non-3GPP network accesses the 3GPP core network through the S2b interface, and the UE authenticates/authorizes the non-3GPP IP access network when the UE accesses the 3GPP EPC through the non-3GPP IP access network.
• 3GPP Authentication Authorization Accounting server 3GPP Authentication Authorization Accounting server, 3GPP AAA server.
• the Home Subscriber Server sends the subscription information of the UE to the 3GPP AAA server or proxy (3GPP AAA sever/proxy), and the HS S can send the most to the UE through the 3GPP AAA sever/proxy. Good routing information.
• the specific access process is shown in Figure 5, including:
• Step 51 Store the non-3GPP access network identifier, the non-3GPP access network capability, and store the ePDG ID in the HSS.
• the non-3GPP access network identifier and the non-3GPP access network capability can represent location information of the non-3GPP access network. If the HSS knows the non-3GPP network identifier used by the UE, its location can be known.
• Step 52 The UE obtains the identifier of the access network used by the UE through an interaction process with the ADS (Access Network Discovery and Selection Function), that is, the non-3GPP access network identifier.
• ADS Access Network Discovery and Selection Function
• Step 53a The UE includes a message element (Information, Element, IE, message element) in the access authentication/authorization request message: a non-3GPP access network identifier, and the non-3GPP through the message
• the access network identifier is transmitted to the HSS/AAA server or proxy.
• Step 54 After the HSS/AAA server determines that the non-3GPP access network is an untrusted access network (23.402 prior art), the HSS finds the UE according to the distance between the non-3GPP access network identifier and the ePDG and the PDN GW. The best route for PDN GW. The best route from the UE to the PDN GW is the overall best route for the UE->ePDG->PDN GW.
• Step 53b The HSS includes the IE: the best routing information of the UE to the PDN GW in the access authentication/authorization response message, and sends the best routing information of the UE to the PDN GW to the UE by using the message.
• the best routing information from the UE to the PDN GW includes ePDG selection information and PDN GW selection information.
• Step 55 The UE interacts with the DNS server according to the ePDG selection information in the best routing information of the UE to the PDN GW to select the ePDG.
• Step 56a The UE includes the IE: PDN GW selection information of the best routing information of the UE to the PDN GW in the IPsec tunnel establishment request message, and sends the PDN GW selection information to the ePDG through the message.
• the ePDG After receiving the IPSec tunnel establishment request message, the ePDG triggers the IPSec tunnel authentication/authorization process.
• Step 56b After receiving the IPSec tunnel authentication/authorization response message, the ePDG sends an IPSec tunnel establishment response message to the UE.
• Step 57 The ePDG interacts with the DNS server to select the PDN GW according to the PDN GW selection information in the best routing information from the UE to the PDN GW.
• Step 58 The ePDG sends a "Proxy Binding Update" message to the PDN GW.
• Step 59 The PDN GW establishes an IP-CAN session with the PCRF.
• Step 510 The PDN GW and the HSS update the address of the PDN GW.
• Step 511 The PDN GW sends a "Confirm Proxy Binding" message to the ePDG.
• the HSS can obtain the location information of each ePDG and each non-local by storing the ePDG ID, the non-3GPP network identifier and the capability locally.
• the location information of the 3GPP network, and the specific location of the non-3GPP network used by the user equipment is obtained by receiving the non-3GPP network identifier sent by the UE, so that the optimal path of the user equipment to the PDN GW can be obtained as a whole, and
• the best routing information is sent to the UE, and the UE performs routing according to the best routing information, that is, selects the corresponding ePDG and PDN GW, and implements the optimal route from the UE to the PDN GW.
• the UE in the untrusted non-3GPP network accesses the 3GPP core network through the S2c interface, and the UE authenticates/authorizes the non-3GPP IP access network when the UE accesses the 3GPP EPC through the non-3GPP IP access network.
• 3GPP Authentication Authorization Accounting server 3GPP Authentication Authorization Accounting server, 3GPP AAA server.
• the Home Subscriber Server sends the subscription information of the UE to the 3GPP AAA server or proxy (3GPP AAA sever/proxy), and the HS S can send the most to the UE through the 3GPP AAA sever/proxy. Good routing information.
• Step 71 Store the non-3GPP access network identifier, the non-3GPP access network capability, and store the ePDG ID in the HSS.
• the non-3GPP access network identifier and the non-3GPP access network capability can represent location information of the non-3GPP access network. If the HSS knows the non-3GPP network identity used by the UE, its location is known.
• Step 72 The UE obtains the non-3GPP access network identifier by interacting with the A DSF.
• Step 73a The UE includes an IE in the access authentication/authorization request message: a non-3GPP access network identifier, and the non-3GPP access network identifier is transmitted to the HSS/AAA server or proxy through the message.
• Step 74 After the HSS/AAA server determines that the non-3GPP access network is an untrusted access network (23.402 prior art), the HSS finds the UE according to the distance between the non-3GPP access network identifier and the ePDG and the PDN GW. The best route for PDN GW. The best route from the UE to the PDN GW is the overall best route for the UE->ePDG->PDN GW.
• Step 73b The HSS includes the IE: the best routing information of the UE to the PDN GW in the access authentication/authorization response message, and sends the best routing information of the UE to the PDN GW to the UE by using the message.
• the best routing information from the UE to the PDN GW includes ePDG selection information and PDN GW selection information.
• Step 75 The UE interacts with the DNS server according to the ePDG selection information in the best routing information of the UE to the PDN GW to select the ePDG.
• Step 76a The UE includes the IE: PDN GW selection information of the best routing information of the UE to the PDN GW in the IPsec tunnel establishment request message, and sends the PDN GW selection information to the ePDG through the message.
• the ePDG After receiving the IPSec tunnel establishment request message, the ePDG triggers the IPSec tunnel authentication/authorization process.
• Step 76b After receiving the IPSec tunnel authentication/authorization response message, the ePDG sends an IPSec tunnel establishment response message to the UE.
• Step 77 The ePDG interacts with the DNS server to select the PDN GW according to the PDN GW selection information in the best routing information from the UE to the PDN GW.
• Step 78 The ePDG sends an "IKE v2 (internet key exchange Version 2)" message containing the IP address to the UE.
• IKE v2 Internet key exchange Version 2
• Step 79 An IPsec tunnel is successfully established between the UE and the ePDG.
• Step 710 The UE and the PDN GW complete the MIPV6 security association establishment and home address configuration, and perform authentication/authorization between the PDN GW and the HSS.
• Step 711 The UE sends a "Binding Update" message to the PDN GW.
• Step 712 The PDN GW establishes an IP-CAN session with the PCRF.
• Step 713 The PDN GW sends a "Binding Confirmation" message to the UE.
• the HSS can according to the location information of the access network used by the UE and the distance information between the ePDG and the PDN GW.
• the optimal routing information of the user equipment to the PDN GW is obtained as a whole, and the optimal routing information is sent to the UE by the UE, and the UE selects the corresponding gateway according to the optimal routing information, so that the optimal route from the UE to the PDN GW is implemented.
• the UE Compared with the prior art, the UE only uses the PLMN ID as a basis to form an ePDG FQDN, and does not consider the location where the UE is located, that is, does not consider the location where the UE is located, so the ePDG FQDN with a relatively accurate location cannot be formed, thereby The problem of the influence of the ePDG is accurately selected, and the HSS/AAA reselects the ePDG after the IPsec tunnel has been established between the UE and the ePDG selected by the prior art.
• the IPsec tunnel establishment process is performed between the UE and the network, the authentication/authorization process of the IPsec tunnel is performed through the 3GPP network, and the IPsec tunnel deletion process is performed once.
• the HSS selects the location information of the UE when the HSS selects the route from the UE to the PDN GW, so that the HSS can select the optimized route closest to the UE, and more importantly, consider the relationship between the ePDG and the PDN GW.
• the distance relationship enables the HSS to select the best route between the UE and the PDN GW and provide the UE with ePDG selection information and PDN GW selection information.
• the best route selection from the UE to the PDN GW is completed by the HSS in the initial access authentication/authorization process of the UE, thereby obtaining ePDG selection information and PDN GW selection information.
• the IPsec tunnel establishment process is reduced, the tunnel is passed through the 3GPP network authentication/authorization process, the IPsec tunnel deletion process is reduced, and the network load is reduced.
• the access network used by the user equipment may also be a 3GPP network.
• the access network used by the user equipment is a 3GPP network
• the corresponding network structure, message, or signaling may be according to the specific situation of the 3GPP network.
• the basic inventive idea can refer to the case where the access network used by the user equipment is a non-3GPP network, which is also within the protection scope of the present invention.
• the aforementioned program can be stored in a computer readable storage medium.
• the program when executed, performs the steps including the above-described method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
• FIG. 8 is a schematic structural diagram of a home subscription server according to an embodiment of the present invention.
• the home subscription server provided by the embodiment of the present invention is used to implement the method provided in the foregoing embodiment shown in FIG. 1.
• the home subscription server includes: an optimal route obtaining unit 81 and a routing information sending unit 82.
• the optimal route obtaining unit 81 is configured to obtain the optimal routing information of the user equipment to the destination gateway according to the location information of the access network used by the user equipment and the distance information between the gateways in the packet data network.
• the distance information is geographical distance information or the number of Internet Protocol (IP) hops.
• IP Internet Protocol
• the distance information between the gateways in the packet data network may be the distance between the ePDG and the PDN GW, or the distance between the serving gateway and the PDN GW.
• the best route obtaining unit 81 obtains the optimal routing information of the user equipment to the PDN GW according to the location information of the access network used by the user equipment and the distance information between the ePDG and the PDN GW, where the optimal routing information includes the ePDG. Select information and PDN GW selection information.
• the routing information sending unit 82 is configured to send the optimal routing information of the user equipment to the destination gateway to the user equipment, so that the user equipment selects the corresponding destination gateway according to the optimal routing information.
• the routing information sending unit 82 sends the best routing information of the user equipment to the PDN GW to the user equipment, so that the user equipment selects the corresponding ePDG according to the ePDG selection information in the optimal routing information, and the corresponding ePDG. Selecting to the corresponding PDN GW according to the PDN GW selection information in the best routing information.
• the routing information sending unit 82 may be specifically configured to send an authentication authorization response message to the user equipment, where the authentication authorization response message includes the best routing information of the user equipment to the destination gateway.
• the home subscription server provided by the embodiment of the present invention may further include: an identifier receiving unit 83, a location information obtaining unit 84, and a distance information acquiring unit 85.
• the identifier receiving unit 83 is configured to obtain the optimal routing information of the user equipment to the PDN GW before the optimal routing information of the user equipment to the PDN GW according to the location information of the access network used by the user equipment and the distance information between the ePDG and the PDN GW. And receiving, by the user equipment, a non-3GPP access network identifier, where the non-3GPP access network is an access network used by the user equipment.
• the identifier receiving unit 83 may be specifically configured to receive an authentication authorization request message sent by the user equipment, where the authentication authorization request message includes a non-3GPP access network identifier.
• the location information obtaining unit 84 is configured to obtain location information of the access network used by the user equipment according to the non-3GPP access network identifier and the locally stored non-3GPP access network identifier and capability.
• the distance information obtaining unit 85 is configured to obtain distance information between the ePDG and the PDN GW according to the locally stored ePDG identifier.
• the HSS can obtain the optimal routing information of the user equipment to the PDN GW through the optimal route acquisition unit according to the location information of the access network used by the UE and the distance information between the ePDG and the PDN GW.
• the routing information sending unit sends the best routing information to the UE, so that the UE can select the best gateway according to the best routing information, so as to implement the optimal routing from the UE to the PDN GW.
• FIG. 9 is a schematic structural diagram of a user equipment for selecting a gateway when accessing a 3GPP network according to an embodiment of the present invention.
• the user equipment for selecting a gateway for accessing the 3GPP network is used to implement the method provided by the embodiment shown in FIG. 2 above.
• the user equipment includes: a routing information receiving unit 91 and a routing unit 92.
• the routing information receiving unit 91 is configured to receive the best routing information of the user equipment to the destination gateway returned by the home subscription server, where the optimal routing information is used by the home subscription server according to the location information and the packet data of the access network used by the user equipment. The distance information between the gateways in the network is obtained.
• the routing information receiving unit 91 receives the best routing information from the user equipment to the PDN GW returned by the home subscription server, and the optimal routing information is used by the home subscription server according to the location information of the access network used by the user equipment, and ePDG and PDN.
• the distance information between the GWs is obtained.
• the optimal routing information refer to the description in the foregoing method embodiment, including ePDG selection information and PDN GW selection information.
• the routing information receiving unit 91 may be specifically configured to receive an authentication authorization response message returned by the home subscription server, where the authentication authorization response message includes the best routing information of the user equipment to the destination gateway.
• the distance information is geographical distance information or IP hops Number.
• the distance information between the gateways in the packet data network may be the distance between the ePDG and the PDN GW, or the distance between the serving gateway and the PDN GW.
• the routing unit 92 is configured to select a corresponding destination gateway according to the optimal routing information. For example, the routing unit 92 selects the corresponding ePDG according to the ePDG selection information in the optimal routing information.
• the user equipment for selecting a gateway when accessing the 3GPP network from the non-3GPP network further includes: an identifier sending unit 93.
• the identifier sending unit 93 is configured to send a non-3GPP access network identifier to the home subscription server before the routing information receiving unit 91 receives the best routing information from the user equipment to the PDN GW returned by the home subscription server, the non-3GPP access network.
• the access network used by the user equipment may be specifically configured to send an authentication authorization request message to the home subscription server, where the authentication authorization request message includes a non-3GPP access network identifier.
• the user equipment for selecting a gateway when accessing the 3GPP network from the non-3GPP network further includes: a selection information sending unit 94, configured to be used by the routing unit 92 according to the optimal routing information.
• a selection information sending unit 94 configured to be used by the routing unit 92 according to the optimal routing information.
• the PDN GW selection information in the best routing information is sent to the corresponding ePDG, so that the corresponding ePDG selects the corresponding PDN GW according to the PDN GW selection information.
• the UE receives the optimal routing information of the UE to the PDN GW sent by the HSS through the routing information receiving unit, and selects the corresponding gateway, and the location information of the access network and the ePDG and the PDN GW are used by the HSS according to the UE.
• the distance information between the user can obtain the best routing information from the user equipment to the PDN GW as a whole, by sending the best routing information to the UE, and the UE selects the corresponding gateway according to the best routing information through the routing unit, thereby realizing the UE.
• the best route to the PDN GW is a whole, by sending the best routing information to the UE, and the UE selects the corresponding gateway according to the best routing information through the routing unit, thereby realizing the UE.
• the best route to the PDN GW is a whole, by sending the best routing information to the UE, and the UE selects the corresponding gateway according to the best routing information through the routing unit, thereby realizing the UE.
• FIG. 10 is a schematic structural diagram of an evolved packet data gateway according to an embodiment of the present invention.
• an evolved packet data gateway ePDG
• the ePDG includes: a selection information receiving unit 101 and a routing unit.
• the selection information receiving unit 101 is configured to receive PDN GW selection information in the optimal routing information sent by the user equipment, where the optimal routing information is used by the home subscription server according to location information of the access network used by the user equipment, and ePDG and PDN. The distance information between the GWs is obtained.
• the optimal routing information refer to the description in the foregoing method embodiment, including ePDG selection information and PDN GW selection information.
• the routing unit 102 is configured to select a corresponding PDN according to the PDN GW selection information.
• the ePDG receives the PDN GW selection information in the best routing information sent by the UE by using the selection information receiving unit, and selects the corresponding gateway by using the PDN GW selection information sent by the UE by using the routing unit, because the HSS is based on the UE.
• the location information of the access network used and the distance information between the ePDG and the PDN GW can obtain the optimal routing information of the user equipment to the PDN GW as a whole, by sending the best routing information to the UE, and the UE
• the ePDG is selected according to the best routing information.
• the ePDG selected by the UE selects the corresponding PDN GW according to the PDN GW selection information in the best routing information sent by the UE, and implements the optimal route from the UE to the PDN GW.
• FIG. 11 is a schematic structural diagram of an evolved packet data system according to an embodiment of the present invention.
• the evolved packet data system can implement the methods provided in the first embodiment and the second embodiment.
• the specific evolved packet data system includes a home subscription server 111 and an evolved packet data gateway 112.
• the home subscription server 111 may be any one of the home subscription servers provided in the foregoing embodiment
• the evolved packet data gateway 112 may be any one of the ePDGs provided in the foregoing embodiments.
• the EPS obtains the best routing information of the UE to the PDN GW by using the HSS provided in the foregoing embodiment, and sends the information to the UE, and the UE selects the corresponding ePDG according to the ePDG selection information in the optimal routing information.
• the selected ePDG selects the corresponding PDN GW according to the PDN GW selection information in the best routing information, and implements the optimal route from the UE to the PDN GW.
• the access network used by the user equipment UE may also be a 3GPP network.
• the access network used by the user equipment is a 3GPP network
• the corresponding network structure, message, signaling, etc. may be The specific situation of the 3GPP network is modified accordingly.
• the basic inventive idea can refer to the case where the access network used by the user equipment is a non-3GPP network, which is also within the protection scope of the present invention.

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• 2012
  • 2012-05-22 CN CN201210159640.8A patent/CN103428798B/zh not_active Expired - Fee Related
• 2013
  • 2013-05-15 WO PCT/CN2013/075657 patent/WO2013174222A1/fr not_active Ceased

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