WO2012068946A1 - 查询网关的方法及系统 - Google Patents

查询网关的方法及系统 Download PDF

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Publication number
WO2012068946A1
WO2012068946A1 PCT/CN2011/081658 CN2011081658W WO2012068946A1 WO 2012068946 A1 WO2012068946 A1 WO 2012068946A1 CN 2011081658 W CN2011081658 W CN 2011081658W WO 2012068946 A1 WO2012068946 A1 WO 2012068946A1
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WIPO (PCT)
Prior art keywords
gateway
management unit
core network
local
request
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PCT/CN2011/081658
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English (en)
French (fr)
Inventor
梁爽
吴瑟
王卫斌
周娜
王静
霍玉臻
朱进国
Original Assignee
中兴通讯股份有限公司
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Publication of WO2012068946A1 publication Critical patent/WO2012068946A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/17Selecting a data network PoA [Point of Attachment]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08Mobility data transfer
    • H04W8/082Mobility data transfer for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a method and system for querying a gateway.
  • BACKGROUND OF THE INVENTION In order to maintain the competitiveness of the third generation mobile communication system in the communication field, the mobile communication service with faster speed, lower delay and more personalized is provided for the user, and at the same time, the operating cost of the operator is reduced, and the third generation cooperation
  • 3GPP 3rd Generation Partnership Project
  • 3GPP Standards Working Group is working on the Evolved Packet System (EPS).
  • FIG. 1 shows a schematic structural diagram of an evolved packet domain system. As shown in FIG. 1, the entire EPS system is divided into two parts: a radio access network and a core network.
  • a Home Subscriber Server HSS
  • MME Mobility Management Entity
  • SGSN Serving GPRS Support Node
  • PCRF Policy and Charging Rule Function
  • S-GW Serving Gateway
  • PDN Gateway Packet Data Gateway
  • PDN Packet Data Network
  • GGSN Gateway GPRS Serving Node
  • the mobility management entity is the location where the user subscription data is stored in the current network, responsible for terminal-to-network non-access layer signaling management, terminal security verification function, terminal mobility management, user idle mode tracking and paging. Management functions and bearer management.
  • Service GPRS support node which is a GSM/EDGE Radio Access Network (GERAN) and a UMTS Terrestrial Radio Access Network (UTRAN) user accessing the core network.
  • GERAN GSM/EDGE Radio Access Network
  • UTRAN UMTS Terrestrial Radio Access Network
  • the support point is similar in function to the mobility management entity and is responsible for user location update, paging management, and bearer management.
  • the service gateway is the gateway of the core network to the wireless system, and is responsible for the user plane bearer of the terminal to the core network, the data buffer in the terminal idle mode, the function of initiating the service request by the network side, the lawful interception, and the packet data routing and forwarding.
  • the function gateway is responsible for counting the situation in which the user terminal uses the wireless network, and generates the CDRs of the terminal using the wireless network, and transmits the CDRs to the charging gateway.
  • the packet data gateway is a gateway of the evolved system and the external packet data network of the system. It is connected to the Internet and the packet data network, and is responsible for the Internet Protocol (IP) address allocation, charging function, and packet filtering of the terminal. , policy control and other functions.
  • IP Internet Protocol
  • the gateway GPRS support node is a gateway node in the GPRS network. It is connected to the Internet and the packet data network, and is responsible for functions such as IP address allocation, charging function, packet filtering, and policy control of the terminal.
  • the packet data network is the operator's IP service network, which provides IP services to users through the operator's core network.
  • the policy charging rule function entity is a server in the evolution system that is responsible for providing rules for charging control, online credit control, threshold control, and quality of service (QoS) policies.
  • the radio access network is composed of an E-UTRAN NodeB (eB) and a 3G radio network controller (RNC), which is mainly responsible for transmitting and receiving wireless signals and contacting the terminal through the air interface.
  • eB E-UTRAN NodeB
  • RNC 3G radio network controller
  • the service GPRS support node is an upgraded SGSN, which can support the S4 interface with the service gateway, and communicates with the mobility management unit by using the GTPv2 protocol.
  • the PS domain network architecture is different from that of Figure 1.
  • the SGSN and the MME are connected by using a Gn interface, and the GTPvl protocol is used for interworking.
  • the SGSN cannot be connected to the serving gateway, and is connected to the Gateway GPRS Support Node (GGSN) through the Gn interface to directly access the packet data network.
  • GGSN Gateway GPRS Support Node
  • Home NodeB (HNB for short) or Home eNodeB (He B) is a small, low-power base station that is deployed as a dedicated resource for some users in a home, group, company, or school.
  • the use of private places mainly to provide users with higher service rates and reduce the cost of using high-rate services, while making up for the lack of coverage of existing distributed cellular wireless communication systems.
  • the advantages of home base stations are affordability, convenience, low power output, plug and play, broadband access, use of single mode terminals, and more.
  • the home base station can be applied to the third generation (3 Generation, referred to as 3G) or long-term evolution (Long Term Evolution)
  • LTE Long Term Evolution
  • a new network element that is, a home base station gateway
  • the main functions performed by the home base station gateway are: verifying the security of the home base station, performing maintenance and management on the operation of the home base station, configuring and controlling the home base station according to the operator's requirements, and exchanging data information of the core network and the home base station.
  • 2 is a network architecture diagram of a 3G home base station. As shown in FIG. 2, the 3G home base station is connected to the home base station gateway through a newly defined Iuh interface, and the home base station gateway provides IuPS and IuCs interfaces to the core network packet domain and the circuit domain.
  • the home base station gateway For a 3G network, the home base station gateway must be deployed to shield the impact on the terminal and the network side after the introduction of the home base station.
  • the home base station gateway can be deployed. Therefore, the LTE home base station and the core network are connected in two ways. One is that the home base station and the core network element are directly connected, and the other is the home base station through the gateway and the core network. The elements are connected, as shown in Figures 3 and 4.
  • the home base station gateway may not integrate the user plane function, and the user plane is directly established between the home base station and the core network user plane gateway, so that the user plane is flattened and the data transmission delay is reduced. , as shown in Figure 5.
  • the home base station can also support local IP access functions. Under the condition that the home base station has local IP access capability and the user subscribes to allow local IP access, the user can implement the user to the home network. Local access to IP devices or the Internet. Through the local access function, the Internet data service can be offloaded, the core network load can be reduced, and the access to the home network device can be forwarded without the core network, and the data transmission is convenient and efficient.
  • the local IP access function can also be used on the macro cell. The main purpose is similar to that of the home base station, and more is applied to the local IP access to the Internet (Internet), in order to reduce the core network load.
  • Figure 6 shows the architecture for implementing the above-mentioned local access function.
  • the local access gateway provides functions such as address allocation, charging, packet filtering, and policy control as a network that is locally connected to an external network (for example, the Internet).
  • an external network for example, the Internet.
  • the network element is recommended to be deployed in conjunction with an existing home base station or base station during actual deployment.
  • the home base station accesses, there may be a home base station gateway in the network, and the scene with the home base station gateway may be on the data path.
  • the process of establishing a PDN connection or PDP activation is as shown in FIG. 7.
  • the UE accesses the GPRS network as an example to illustrate how the policy is delivered.
  • Step S702 The terminal initiates a PDP activation request, and the non-access stratum message is brought to the SGSN by using the base station. The message carries the APN information that the terminal wants to access.
  • step S704 the SGSN constructs a Domain Name Server (DNS) query request message according to the Access Point Name (APN) information provided by the terminal, and queries the DNS server for the available GGSN address.
  • DNS Domain Name Server
  • Step S706 the DNS server returns a query response message to the SGSN according to the storage information, where the query response message includes available GGSN address information. This information may contain one or more GGSN addresses.
  • Step S708 the SGSN selects the GGSN from the returned GGSN address or address list.
  • Step S710 The SGSN sends a PDP activation request to the local gateway node, where the SGSN carries a parameter such as a UE identifier, a PDP type, QoS information, and charging information.
  • Step S712 The local gateway node verifies the parameters carried in the PDP activation request message, and authorizes the QoS parameters carried in the request.
  • the local gateway returns a PDP activation response to the SGSN, which carries information such as a tunnel end identifier assigned to the UE, an authorized QoS parameter, and the like.
  • Step S714 The SGSN sends a bearer assignment request to the base station, where the MSISDN number, the APN, the QoS parameter, and the like of the UE are carried.
  • Step S716 If the base station accepts the QoS parameter delivered by the local gateway node, the base station initiates an RRC connection establishment process.
  • step S720 the SGSN determines whether to send a PDP update request to the local gateway node according to whether a direct tunnel is established, and if it is sent, carries the tunnel end identifier of the base station. If the QoS is inconsistent with the QoS delivered by the previous core network gateway, the SGSN notifies the local gateway through the PDP update process. Step S722, the SGSN returns a PDP activation response to the terminal, where the activation response carries information such as an authorized QoS parameter. As can be seen from FIG. 7, in order to support local access, it is necessary to improve and upgrade the existing mobility management unit.
  • the present invention provides a method and system for querying a gateway to solve at least one of the above problems in order to support local access, and to improve and upgrade an existing mobility management unit.
  • a method of querying a gateway is provided.
  • the method for querying a gateway according to the present invention is applied to a network for implementing local access, the network includes a selection management unit, and the method includes: the selection management unit sends a gateway query request to the DNS server, where the gateway query request includes the APN information.
  • the selection management unit receives a gateway query response returned from the DNS server, wherein one or more of the carried queries are received Gateway address.
  • the DNS server returns one or more gateway addresses including: the DNS server queries one or more local gateway addresses according to the APN information and/or the location information; or the DNS server according to at least one of the APN information and the location information, and The combination of the core network gateway indication information is selected, and the query obtains one or more local gateway addresses and one or more core network gateway addresses.
  • the method before the selecting management unit sends the gateway query request to the DNS server, the method further includes: the mobility management unit sends a request for querying the selection management unit to the DNS server; and the mobility management unit receives one or more selections returned from the DNS server. Management unit address; The mobility management unit determines the selection management unit based on one or more selection management unit addresses.
  • the method further includes: the mobility management unit sends the bearer establishment to the selection management unit. The request, where the bearer setup request carries: location information.
  • the selection management unit after the selection management unit receives the gateway query response returned from the DNS server, the following further includes: selecting the management unit to select the local gateway address, and sending a bearer establishment request to the corresponding local gateway, where The bearer setup request carries the location information; the selection management unit selects the local gateway address, and sends a bearer setup request to the corresponding local gateway, where the bearer setup request carries the location information and one or more core network gateways returned by the DNS server address.
  • the method further includes: sending a query to the DNS server if the bearer setup request received by the local gateway does not include the core network gateway address a request for a core network gateway address, where the request includes: at least one of APN information and location information and a combination of selecting a core network gateway indication information; the local gateway receives from The query response message returned by the DNS server, wherein the query response message carries one or more core network gateway addresses; the local gateway selects a core network gateway address from the returned one or more core network gateway addresses; if the local gateway receives The bearer setup request includes one or more core network gateway addresses, and the local gateway selects a core network gateway address from the returned one or more core network gateway addresses.
  • the method further includes: selecting the management unit to select the local gateway address and the core network gateway address, and sending a bearer establishment request to the selected local gateway address, where The bearer setup request carries the location information and the selected core network gateway address.
  • the method further includes: the local gateway determining whether data splitting is required; if the splitting is required, the local gateway carries the bearer setup request The parameters are verified and authorized; if no offload is required, the local gateway sends a bearer setup request to the core network gateway.
  • the location information includes at least one of the following: a routing area identifier of the terminal, a cell identifier, a base station identifier, a closed subscriber group CSG identifier, and an access network identifier.
  • the method further includes: the local gateway or the selection management unit performing a protocol conversion operation on the received bearer setup message and the sent bearer setup message.
  • the mobility management unit when the accessed network is an evolved packet switched core network EPC network, the mobility management unit is a mobility management entity MME or a serving general packet radio service support node SGSN, and the bearer setup request is to create a session request;
  • the network is a general packet radio service GPRS network
  • the mobility management unit is an SGSN, and the bearer setup request is to create a packet data protocol PDP context request;
  • the accessed network is an evolved EPC network, it is connected through a non-3GPP access network.
  • the mobility management unit When the network is accessed, the mobility management unit is a non-3GPP access gateway, an enhanced data network gateway, or a network element selected by the EPC network gateway on the access network side, where the bearer setup request is to create a session. request.
  • a system for querying a gateway is provided.
  • the system for querying a gateway according to the present invention is applied to a network for implementing local access.
  • the system for querying the gateway includes: a selection management unit and a DNS server; wherein, the selection management unit includes: a first sending module, configured to be a DNS The server sends a gateway query request, where the gateway query request includes APN information and/or location information, or at least one of APN information and location information, and a combination of selecting core network gateway indication information; the first receiving module is configured to receive from the The gateway query response returned by the DNS server, where the gateway query response carries one or more gateway addresses obtained by the query.
  • a DNS server comprising: a second receiving module, Set to receive a gateway query request from the selection management unit; the query module is configured to be queried according to at least one of APN information and/or location information, or APN information and location information, and a combination of core network gateway indication information One or more gateway addresses; a second sending module, configured to send one or more gateway addresses to the selection management unit.
  • the query module includes: a first query sub-module, configured to query one or more local gateway addresses according to the APN information and/or the location information; and the second query sub-module is set according to the APN information and the location information.
  • the method further includes: a mobility management unit, wherein the mobility management unit comprises: a third sending module, configured to send a request for querying the selection management unit to the DNS server; and a third receiving module, configured to receive from the DNS server Returning one or more selection management unit addresses; a first determining module, configured to determine a selection management unit according to the one or more selection management unit addresses; a fourth sending module, configured to send a bearer establishment request to the selection management unit, where The bearer setup request carries: location information.
  • the selection management unit further includes one of the following: a first processing module, configured to select a local gateway address, and send a bearer setup request thereto, where the bearer setup request carries location information; Set to select a local gateway address, and send a bearer setup request thereto, where the bearer setup request carries location information and one or more core network gateway addresses returned by the DNS server; and the third processing module is configured to select a local gateway address. And the core network gateway address, and sending a bearer setup request to the selected local gateway address, where the bearer setup request carries the location information and the selected core network gateway address.
  • the method further includes: a local gateway, where the local gateway includes: a second determining module, configured to determine whether data shunting is required; and an authentication authorization module, configured to: when the output of the second determining module is YES, in the bearer establishment request The carried parameter is used for verification and authorization; and the fifth sending module is configured to send a bearer setup request to the core network gateway when the second determining module outputs no.
  • a selection management unit is newly added to the network that implements local access, and the selection management unit interacts with the DNS server to query the gateway address, thereby realizing local access.
  • FIG. 3 is a schematic diagram of a first home base station network architecture in the related art
  • 4 is a schematic diagram of a second home base station network architecture in the related art
  • FIG. 5 is a schematic diagram of a third home base station network architecture in the related art
  • FIG. 6 is a schematic diagram of a network architecture for implementing local access in the related art
  • FIG. 8 is a flowchart of a method for querying a gateway according to an embodiment of the present invention
  • FIG. 9 is a flowchart for implementing local access according to an example 1 of the present invention
  • FIG. 11 is a structural block diagram of a system for querying a gateway according to an embodiment of the present invention
  • FIG. 12 is a structural block diagram of a system for querying a gateway according to a preferred embodiment of the present invention
  • 13 is a schematic diagram of a network architecture for implementing local access according to an example 1 of the present invention
  • FIG. 14 is a local implementation according to example 2 of the present invention.
  • FIG. 15 is a schematic diagram of a local access network architecture according to an implementation example of the present invention III.
  • FIG. 8 is a flow chart of a method of querying a gateway in accordance with an embodiment of the present invention.
  • the above method is mainly applied to a network that implements local access.
  • a selection management unit needs to be added to the network for implementing local access. As shown in FIG.
  • the method for querying a gateway in the embodiment of the present invention mainly includes the following processing: Step S802: The selection management unit sends a gateway query request to the DNS server, where the gateway query request includes APN information and/or location information, or At least one of the APN information and the location information and the combination of the selected core network gateway indication information; Step S804: The selection management unit receives the gateway query response returned from the DNS server, where the one or more gateway addresses obtained by the query are carried.
  • the one or more gateway addresses may be a local gateway address, or may be a combination of a local gateway address and a core network gateway address.
  • the location information includes, but is not limited to, at least one of the following: a routing area identifier of the terminal, a cell identifier, a base station identifier, a CSG identifier, and an access network identifier.
  • the foregoing DNS server combines the first information (ie, APN information and/or location information) or a combination of the first information and the second information (ie, at least one of APN information and location information and selects a core network gateway indication information).
  • the querying one or more gateway addresses further includes the following processing: when the gateway query request includes the first information, the DNS server obtains one or more local gateway addresses according to the first information query; when the gateway query request includes the first information and In the second information, the DNS server queries one or more local gateway addresses and one or more core network gateway addresses according to the combination of the first information and the second information.
  • the foregoing method may further include the following processing:
  • the mobility management unit sends a request for querying the selection management unit to the DNS server;
  • the mobility management unit receives one or more selection management unit addresses returned from the DNS server; (3) The mobility management unit determines the selection management unit based on one or more selection management unit addresses.
  • the DNS server can only query the selection management unit address by using the APN and/or location information carried in the request of the query selection management unit sent by the mobility management unit, and then return the queried selection management unit address to Selecting the management unit, the selection management unit is responsible for selecting the local gateway or a combination of the local gateway and the core network gateway.
  • the mobility management unit sends the bearer to the selection management unit.
  • the selection management unit receives the location information, and then uses the location information to construct a Fully Qualified Domain Name (FQDN) that is sent to the DNS server, and uses the constructed FQDN as an input parameter of the DNS query.
  • FQDN Fully Qualified Domain Name
  • the selection management unit can also construct the FQDN through the APN information, but the tag information carries the above location information.
  • the DNS server can query the local gateway address according to the received location information.
  • the label information when the gateway query request includes only the APN information or the combination of the APN information and the label information, the label information further carries: information indicating that the DNS server sorts the output multiple gateway addresses.
  • the selection management unit may instruct the DNS server to sort the outputted multiple gateway addresses in the label information.
  • the DNS server can sort multiple gateway addresses according to the network architecture and output the location information, and the selection management unit selects the gateway address from the gateway list.
  • the processing may be further included: processing (1) the selection management unit selects a local gateway address, and sends a bearer setup request thereto, where the bearer setup request carries location information; 2) The selection management unit selects the local gateway address and sends a bearer setup request thereto, where the bearer setup request carries the location information and one or more core network gateway addresses returned by the DNS server. The processing (3) selects the management unit to select the local gateway address and the core network gateway address, and sends a bearer setup request to the selected local gateway address, where the bearer setup request carries the location information and the selected core network gateway address.
  • the selection management unit sends the bearer setup request to the local gateway corresponding to the selected local gateway address
  • the following processing may be further included: if the bearer setup request received by the local gateway does not include the core The network gateway address, the shell ij sends a request for querying the core network gateway address to the DNS server, where the request includes: at least one of APN information and location information and a combination of selecting core network gateway indication information; the local gateway receives the DNS server Returning the query response message, wherein the query response message carries one or more core network gateway addresses; the local gateway selects a core network gateway address from the returned one or more core network gateway addresses; if the local gateway receives the bearer established The request includes one or more core network gateway addresses, and the local gateway selects the core network gateway address from the returned one or more core network gateway addresses.
  • the selection management unit sends the bearer establishment request to the local gateway corresponding to the selected local gateway address
  • the following processing may be
  • the local gateway determines whether data offloading is required
  • the local gateway verifies and authorizes the parameters carried in the bearer setup request
  • the local gateway sends a bearer setup request to the core network gateway.
  • the DNS server selects The gateway query response returned by the management unit carries one or more core network gateway addresses.
  • the selection management unit selects one of the one or more core network gateway addresses to be sent to the local access gateway in the bearer setup request, and then, when the data offload is not required, the local access gateway corresponds to the selected core network gateway address.
  • the core network gateway sends a bearer setup request.
  • the gateway query request sent by the management unit to the DNS server does not carry the label information (ie, the second information) for indicating the return of the gateway address of the core network
  • the local connection is not needed when the data is not required to be offloaded.
  • the gateway needs to send a gateway query request to the DNS server again to query the core network gateway address.
  • one of the core network gateway addresses obtained by the query is selected, and a bearer establishment request is sent to the core network gateway corresponding to the selected core network gateway address.
  • the local gateway or the selection management unit may further perform a protocol conversion operation on the received message. That is, the GTPv1 message and the GTPv2 message conversion are completed.
  • the mobility management unit sends a GTPv1 message to the local gateway/selection management unit, but the local gateway/selection management unit converts the GTPv1 message into a GTPv2 message and sends it out.
  • the selection management unit may be a separately set physical entity, or may be combined with a local gateway or a mobility management unit.
  • Step S902 A terminal initiates a PDP activation request, and the non-access stratum message is sent to the SGSN in the mobility management unit by using the base station, where the bearer in the message wants to access APN information.
  • Step S904 the SGSN constructs a DNS query request message according to the APN information provided by the terminal, and queries the DNS server for an available GGSN address.
  • the DNS server is configured to, if the DNS query request is constructed according to the APN information, only the selection management unit address can be queried.
  • Step S906 the DNS returns a query response message to the SGSN according to the storage information, where the query response message includes available selection management unit address information. This information can contain one or more selection management unit addresses.
  • Step S908, the SGSN selects a selection management unit from the returned selection management unit address or address list.
  • the SGSN sends a Create PDP Context Request to the selection management unit, which carries parameters such as a UE identifier, a PDP type, QoS information, charging information, an APN, and location information of the terminal.
  • the location information may include, but is not limited to, a routing area identifier of the UE, a cell identifier, a CSG identifier, a base station identifier, an access network identifier (name), and the like.
  • the selection management unit constructs a DNS query request message according to the first information (APN and/or location information) provided by the terminal, or a combination of the first information and the second information (tag information), and queries the DNS for an available local gateway. Address and / or core network gateway address.
  • the selection management unit can query the local gateway address according to the location information and/or the APN.
  • the core network gateway address is queried according to the APN and the label information.
  • the tag refers to the special indication to inform the DNS server to return the real core gateway address instead of selecting the management unit address.
  • This step can be completed by one or more queries. Only one description is described here, but the number of times is not limited.
  • Step S912 the DNS server queries the corresponding address information according to the query request.
  • Step S914 the DNS server returns a query response message, where the query response message includes available local gateway information, or a combination of local gateway information and core network gateway information.
  • the address in the message can contain one or more gateway addresses.
  • step S916 the selection management unit selects the local gateway address from the returned local gateway address or address list.
  • the selection management unit sends a PDP context request to the local gateway, where the UE identifier, PDP type, QoS information, charging information, APN, location information of the terminal, and the like are carried. If the core network gateway address is also queried in step 1005, the message also includes the core network gateway information.
  • Step S918 The local gateway determines whether to offload the data on the PDP context according to the static configuration or the dynamically obtained routing policy. If yes, steps S920 to S922 are skipped. Otherwise, the local gateway determines whether to perform the DNS query process according to whether the message of the step S916 carries the core network gateway address.
  • Step S920 The local gateway sends a PDP context request to the core network gateway, where the UE identifier, the PDP type, the QoS information, the charging information, the APN, the location information of the terminal, and the like are carried.
  • Step S922 The core network gateway verifies the parameters carried in the PDP context request message, and authorizes the QoS parameters carried in the request.
  • the core network gateway returns a PDP context response to the local gateway, which carries information such as a tunnel end identifier assigned to the UE, an authorized QoS parameter, and the like.
  • Step S924 S926, if it is determined in step S918 that the traffic is not required to be performed without performing steps S920 and S922, the local gateway creates a parameter carried in the PDP context request message for verification, and authorizes the QoS parameter carried in the request.
  • the local gateway returns a Create PDP Context Response to the local gateway by selecting the management unit, which carries information such as a tunnel end identifier assigned to the UE, an authorized QoS parameter, and the like.
  • step S928 the remaining process of performing PDP activation is similar to the prior art, and details are not described herein.
  • 10 is a flow diagram of implementing local access in accordance with Example 2 of the present invention. As shown in FIG.
  • Step S1002 The terminal initiates an attach request, or a PDN connection establishment request, and the non-access stratum message is brought to the SGSN by using the base station.
  • the message carries the APN information that the terminal wants to access. If the process of the APN is performed in the process of the S1002, the acquisition of the APN information is after the establishment of the secure connection, and the process is not described herein.
  • Step S1004 The mobility management unit constructs a DNS query request message according to the APN information provided by the terminal, and queries the DNS for the available core network gateway address.
  • the DNS server is configured to, if the DNS query request is constructed according to the location information, only the selection management unit address can be queried.
  • the foregoing location information includes but is not limited to: a routing area identifier, a cell identifier, a base station identifier, and a tracking area identifier.
  • Step S1006 The DNS returns a query response message to the mobility management unit according to the storage information, where the available selection management unit address information is included, and the information may include one or more selection management unit addresses.
  • the mobility management unit selects the selection management unit from the returned selection management unit address or address list.
  • the mobility management unit sends a create session request message to the selection management unit, which carries parameters such as a UE identifier, a PDP type, QoS information, charging information, an APN, and location information of the terminal.
  • the location information may include, but is not limited to, a routing area identifier of the UE, a cell identifier, a base station identifier, a CSG identifier, an access network name, and the like.
  • the core network PGW address can also be carried.
  • Step S1010 The selection management unit constructs a DNS query request message according to the first information (APN and/or location information) provided by the terminal, the combination of the first information and the second information (tag information), and queries the DNS for the available local gateway address. .
  • the selection management unit can query the local gateway address according to the location information and the APN. This step can be completed by one or more queries. Only one description is described here, but the number of times is not limited.
  • step S1012 the DNS server queries the corresponding address information according to the query request.
  • step S1014 the DNS server returns a query response message, which includes available local gateway information. This information can contain one or more addresses.
  • step S1016 the selection management unit selects a local gateway address from the returned local gateway address or address list. The selection management unit sends a create session request to the local gateway, where the UE identifier, the PDP type, the QoS information, the charging information, the APN, the location information of the terminal, and the like are carried.
  • step S1018 the local gateway determines whether to offload the data of the PDN connection according to the static configuration or the dynamically obtained routing policy. If yes, steps S1020 to S1022 are skipped. Otherwise, the subsequent process is performed.
  • Step S1020 The local gateway sends a create session request to the core network gateway, where the UE identifier, the PDP type, the QoS information, the charging information, the APN, the location information of the terminal, and the like are carried.
  • Step S1022 The core network gateway verifies the parameters carried in the PDP context request message, and authorizes the QoS parameters carried in the request.
  • the core network gateway returns a create session response to the local gateway, where the tunnel end identifier assigned to the UE, the authorized QoS parameters, and the like are carried. Steps S1024 to S1026.
  • step 1109 If it is determined in step 1109 that the traffic is not required to be executed, and the steps S1020 to S1022 are not performed, the local gateway creates a parameter carried in the session request message for verification, and authorizes the QoS parameter carried in the request.
  • the local gateway returns a create session response to the local gateway by selecting the management unit, which carries information such as a tunnel end identifier assigned to the UE, an authorized QoS parameter, and the like.
  • step S1028 the PDN connection establishment is performed, or the remaining process of the attach is similar to the prior art, and details are not described herein.
  • 11 is a structural block diagram of a system for querying a gateway. The system is applied to a network for implementing local access. As shown in FIG.
  • the system for querying the gateway includes: a selection management unit 1 and a DNS server 2
  • the selecting the management unit 1 includes: the first sending module 10, configured to send a gateway query request to the DNS server, where the gateway query request includes the first information or a combination of the first information and the second information, where the first information includes: Providing the APN information and/or the location information, where the second information includes: label information that is set to indicate the return of the core network gateway address;
  • the location information includes, but is not limited to, at least one of the following: a routing area identifier of the terminal, a cell identifier , the base station identifier, the CSG identifier, and the access network identifier.
  • the first receiving module 12 is configured to receive a gateway query response returned from the DNS server, where the gateway query response carries one or more gateway addresses obtained by the query.
  • the DNS server 2 includes: a second receiving module 20, configured to receive a gateway query request from the selection management unit; and a query module 22 configured to query the one obtained according to the first information or the combination of the first information and the second information a plurality of gateway addresses; the second sending module 24 is configured to send one or more gateway addresses to the selection management unit.
  • the one or more gateway addresses may be a local gateway address, or may be a combination of a local gateway address and a core network gateway address.
  • the selection management unit in the above system interacts with the DNS server to query the gateway address, thereby realizing local access. In order to support the local access, the related mobile management unit needs to be improved and upgraded, and the modification of the existing mobile management unit introduced by the local access service can be effectively shielded.
  • the query module 22 may further include: a first query sub-module (not shown in FIG. 12) configured to obtain one or more local gateway addresses according to the first information query;
  • the sub-module (not shown in FIG. 12) is configured to query one or more local gateway addresses and one or more core network gateway addresses according to the combination of the first information and the second information.
  • FIG. 12 a first query sub-module (not shown in FIG. 12) configured to obtain one or more local gateway addresses according to the first information query.
  • the sub-module (not shown in FIG. 12) is configured to query one or more local gateway addresses and one or more core network gateway addresses according to the combination of the first information and the second information.
  • the system for querying the gateway may further include: a mobility management unit 3, where the mobility management unit includes: a third sending module 30, configured to send a request for querying the selection management unit to the DNS server, and third receiving The module 32 is configured to receive one or more selection management unit addresses returned from the DNS server; the first determining module 34 is configured to determine the selection management unit according to the one or more selection management unit addresses; and the fourth sending module 36, The method is configured to send a bearer setup request to the selection management unit, where the bearer setup request carries: location information.
  • a mobility management unit 3 includes: a third sending module 30, configured to send a request for querying the selection management unit to the DNS server, and third receiving The module 32 is configured to receive one or more selection management unit addresses returned from the DNS server; the first determining module 34 is configured to determine the selection management unit according to the one or more selection management unit addresses; and the fourth sending module 36, The method is configured to send a bearer setup request to the selection management unit, where the bearer setup request carries: location information.
  • the foregoing selection management unit 1 may further include: a first processing module 14 configured to: select a local gateway address, and send a bearer setup request thereto, where the bearer setup request carries location information;
  • the second processing module 16 is configured to select a local gateway address and send a bearer setup request thereto, where the bearer setup request carries the location information and one or more core network gateway addresses returned by the DNS server.
  • the third processing module 18 And setting a local gateway address and a core network gateway address, and sending a bearer setup request to the selected local gateway address, where the bearer setup request carries the location information and the selected core network gateway address.
  • a first processing module 14 configured to: select a local gateway address, and send a bearer setup request thereto, where the bearer setup request carries location information
  • the second processing module 16 is configured to select a local gateway address and send a bearer setup request thereto, where the bearer setup request carries the location information and one or more core network gateway addresses returned by the DNS server.
  • the system for querying the gateway may further include: a local gateway 4, the local gateway 4 may further include: a second determining module 40, configured to determine whether data offloading is required; and verifying the authorization module 42, When the output of the second determining module is YES, the parameter carried in the bearer setup request is verified and authorized.
  • the fifth sending module 44 is configured to send a bearer setup to the core network gateway when the output of the second determining module is NO. request.
  • the architecture for implementing a local access network (the network includes a system for querying a gateway) is described below in conjunction with FIGS. 13 and 14.
  • FIG. 13 is a schematic diagram of a network architecture for implementing local access according to an example 1 of the present invention.
  • This architecture is applicable to the terminal accessing the EPC network from GERAN/UTRAN/EUTRAN.
  • the process described above with respect to Figure 9 or Figure 10 can be based on this architecture.
  • This embodiment does not limit the type of base station, that is, a home base station or a normal base station.
  • the home base station/general base station is HNB/RNC
  • the mobility management unit is mainly composed of SGSN and MME. Cheng, here is the SGSN as an example.
  • the home base station/base station is He B/e B and the mobility management unit is MME.
  • the home base station gateway If there is a home base station gateway, all the messages between the home base station and the mobility management unit need to pass through the home base station gateway. Further, the message between the home base station and the local gateway may be through the home base station gateway or not through the home base station gateway. For the scenario in which the home base station gateway forwards the message, the home base station gateway transparently transmits the passed message, and the transparent transmission process has nothing to do with the present invention, and details are not described herein.
  • the core network gateway node in this embodiment refers to the SGW and the PGW, or is the PGW.
  • a selection management unit is newly added to shield the modification of the existing mobile management unit by introducing the local connection service.
  • the selection management unit is a core network gateway, and the mobility management unit passes
  • the APN and/or location information can only be selected to the selection management unit.
  • the selection management unit is responsible for selecting a local gateway, or a combination of a local gateway and a core network gateway. When the selection management unit is set to be responsible only for selecting the local gateway, the selection management unit selects the local gateway according to the location information provided by the terminal. And route related messages to the local gateway. The local gateway determines whether to offload the data of the PDP context/PDN connection according to the offload policy. If the splitting is decided, there is no need to further select the core network gateway, otherwise the local gateway selects the core network gateway according to the APN, and/or the location information of the user.
  • the selection management unit When the selection management unit is configured to select the local gateway and the core network gateway, the selection management unit selects the core network gateway and the local gateway according to the location information and the APN information provided by the terminal. And the related message is routed to the local gateway, which contains information about the core network gateway. The local gateway determines whether to split the data of the PDP context/PDN connection according to the offload policy. If the offloading is decided, there is no need to further select the core network gateway, otherwise the related message is forwarded to the core network gateway. For the core network gateway, the local gateway sends the message in a similar manner to the mobility management unit, so it can have no effect on the core network gateway and the existing mobility management unit.
  • FIG. 14 is a schematic diagram of a network architecture for implementing local access according to Example 2 of the present invention.
  • This architecture is applicable to terminals accessing the GPRS network from GERAN/UTRAN.
  • the process described above with respect to Figure 9 can be based on this architecture.
  • This embodiment does not limit the type of base station, that is, a home base station or a normal base station.
  • the home base station/base station is HNB/RNC and the mobility management unit is SGSN.
  • the field of home base stations There may be a home base station gateway in the network.
  • the core network gateway in this embodiment refers to a GGSN.
  • a selection management unit is newly added for shielding the modification of the existing mobile management unit unit by introducing the local connection service.
  • the selection management unit is a core network gateway, and the mobility management unit can only select the selection management unit through the APN and/or location information.
  • the selection management unit is responsible for selecting a local gateway or a combination of a local gateway and a core network gateway.
  • the selection management unit selects the local gateway according to the location information provided by the terminal. And route related messages to the local gateway.
  • the local gateway determines whether to offload the data of the PDP context/PDN connection according to the offload policy. If the splitting is decided, there is no need to further select the core network gateway, otherwise the local gateway selects the core network gateway according to the APN, and/or the location information of the user.
  • the selection management unit When the selection management unit is set to select the local gateway and the core network gateway, the selection management unit selects the core network gateway and the local gateway according to the location information and the APN information provided by the terminal. And the related message is routed to the local gateway, which contains information about the core network gateway. The local gateway determines whether to split the data of the PDP context/PDN connection according to the offload policy. If the offloading is decided, there is no need to further select the core network gateway, otherwise the related message is forwarded to the core network gateway.
  • the local gateway or the selection management unit can also complete the protocol conversion function, that is, complete the GTPvl message and the GTPv2 message conversion, that is, the SGSN sends the GTPvl message to the local gateway/select management unit, but the selector does not limit the GGSN or the PGW when selecting the core network gateway. .
  • the local gateway sends the message in a similar manner to the mobility management unit, so it can have no effect on the core network gateway and the existing mobility management unit.
  • the selection management unit may be a physical entity that exists separately, or may be combined with a local gateway or a mobility management unit.
  • 15 is a schematic diagram of a network architecture for implementing local access according to Example 3 of the present invention.
  • This architecture is applicable to the case where a terminal accesses a 3GPP core network from an access network defined by a non-3GPP.
  • a terminal accesses a 3GPP core network from an access network defined by a non-3GPP.
  • Considering other access technologies, such as other access networks not defined by 3GPP it is possible to access the EPC network in the future.
  • the continuity requirement of the service can be ensured, and the gateways selected by different access networks are the same. Therefore, when the selection management unit is introduced in the EPC network, different access network elements can be connected to the selection management unit, and the selection management unit selects a suitable local gateway or core network gateway for it.
  • a selection management unit is newly added to shield the impact of introducing local connection services on the non3GPP access network.
  • the selection management unit is a core network gateway, a non3GPP access gateway, or The enhanced data network gateway (ePDG), or the network element selected by the EPC network gateway on the access network side, can only select the selection management unit through the APN and or the location information.
  • the selection management unit is responsible for selecting a local gateway or a combination of a local gateway and a core network gateway. When the selection management unit is set to be responsible only for selecting the local gateway, the selection management unit selects the local gateway according to the location information provided by the terminal, and routes related messages to the local gateway.
  • the local gateway determines whether to offload the connected data according to the offload policy. If the offloading is decided, there is no need to further select the core network gateway, otherwise the local gateway selects the core network gateway according to the APN, and/or the location information of the user.
  • the selection management unit When the selection management unit is configured to select the local gateway and the core network gateway, the selection management unit selects the core network gateway and the local gateway according to the location information and the APN information provided by the terminal, and routes related messages to the local gateway, where the core network gateway is included. Related Information.
  • the local gateway determines whether to offload the connected data according to the offload policy. If the offloading is decided, there is no need to further select the core network gateway, otherwise the related message is forwarded to the core network gateway.
  • the local gateway or the selection management unit can also complete the protocol conversion function, that is, complete the conversion of the PMIP or DSMIP protocol and the GTP message with the access network side, that is, the non-3GPP access gateway, or the enhanced data network gateway (ePDG).
  • the network element selected by the EPC network gateway on the access network side sends the PMIP to the local gateway/select management unit, but when the management unit selects the core network gateway and the local gateway, the DSMIP protocol may select only the GTPvl GGSN or PGW supporting GTPv2 and GTPvl.
  • the local gateway sends the message in a similar manner to the non3GPP access gateway, or the enhanced data network gateway (ePDG), or the network element selected by the EPC network gateway on the access network side. It can be done to the core network gateway and the existing non3GPP access gateway, or the enhanced data network gateway (ePDG), or the network element selected by the EPC network gateway on the access network side.
  • the selection management unit may be a separate physical entity, or may be the same as a local gateway or a non3GPP access gateway, or an enhanced data network gateway (ePDG), or perform an EPC network gateway selection on the access network side.
  • the network elements one of which is set up.
  • a selection management unit is newly added to the network that implements local access, and the selection management unit performs local access by querying the gateway address by interacting with the DNS server.
  • the above solution can effectively shield the introduction of the local access service to the existing mobility management unit, which can avoid a large number of network equipment upgrades and introduce local connection services.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
  • the computing device may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

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Abstract

本发明提供了一种查询网关的方法及系统,应用于实现本地接入的网络中,该网络包括:选择管理单元,在上述方法中,该选择管理单元向域名DNS服务器发送网关查询请求,其中,该网关查询请求包括APN信息和/或位置信息,或者,APN信息和位置信息中的至少一个以及选择核心网网关指示信息的组合;选择管理单元接收来自于DNS服务器返回的网关查询响应,其中,携带查询得到的一个或多个网关地址。根据本发明提供的技术方案,可以有效屏蔽引入本地接入业务对现有的移动管理单元的改动。

Description

查询网关的方法及系统 技术领域 本发明涉及移动通信领域, 具体涉及一种查询网关的方法及系统。 背景技术 为了保持第三代移动通信系统在通信领域的竞争力, 为用户提供速率更快、 时延 更低、 更加个性化的移动通信服务, 同时, 降低运营商的运营成本, 第三代合作伙伴 计划(3rd Generation Partnership Project, 简称为 3GPP)标准工作组正致力于演进分组 系统 (Evolved Packet System, 简称为 EPS) 的研究。 图 1示出了演进分组域系统的结构示意图, 如图 1所示, 整个 EPS系统分为无线 接入网和核心网两部分。在核心网中,包含了归属用户服务器(Home Subscriber Server, 简称为 HSS)、 移动性管理实体 (Mobility Management Entity, 简称为 MME)、 服务 GPRS支持节点(Serving GPRS Support Node,简称为 SGSN)、策略计费规则功能(Policy and Charging Rule Function,简称为 PCRF)、服务网关( Serving Gateway,简称为 S-GW)、 分组数据网关(PDN Gateway, 简称为 P-GW)和分组数据网络(Packet Data Network, 简称为 PDN)。 为了支持 EPS网络和现有网关的互通, 该网络中的网元也支持接入网 关 GPRS支持节点(Gateway GPRS Serving Node, 简称为 GGSN)。下面详细描述上述 各部分功能: 归属用户服务器, 是用户签约数据的永久存放地点, 位于用户签约的归属网。 移动性管理实体, 是用户签约数据在当前网络的存放地点, 负责终端到网络的非 接入层信令管理、 终端的安全验证功能、 终端的移动性管理、 用户空闲模式下的跟踪 和寻呼管理功能和承载管理。 服务 GPRS 支持节点, 是 GSM/EDGE 无线接入网 (GSM/EDGE Radio Access Network, 简称为 GERAN)和 UMTS陆地无线接入网(UMTS Terrestrial Radio Access Network, 简称为 UTRAN)用户接入核心网络的业务支持点, 功能上与移动性管理实 体类似, 负责用户的位置更新、 寻呼管理和承载管理等功能。 服务网关, 是核心网到无线系统的网关, 负责终端到核心网的用户面承载、 终端 空闲模式下的数据缓存、 网络侧发起业务请求的功能、 合法监听和分组数据路由和转 发功能; 服务网关负责统计用户终端使用无线网的情况, 并产生终端使用无线网的话 单, 传送给计费网关。 分组数据网关, 是演进系统和该系统外部分组数据网络的网关, 它连接到因特网 和分组数据网络上, 负责终端的互联网协议(Internet Protocol, 简称为 IP)地址分配、 计费功能、 分组包过滤、 策略控制等功能。 网关 GPRS支持节点, 是 GPRS网络中的网关节点, 它连接到因特网和分组数据 网络上, 负责终端的 IP地址分配、 计费功能、 分组包过滤、 策略控制等功能。 分组数据网络, 是运营商的 IP业务网络, 该网络通过运营商的核心网为用户提供 IP服务。 策略计费规则功能实体, 是演进系统中负责提供计费控制、 在线信用控制、 门限 控制、 服务质量 (Quality of Service, 简称为 QoS) 策略方面规则的服务器。 无线接入网, 是由演进基站 (E-UTRAN NodeB, 简称 e B)和 3G无线网络控制 器(Radio Network Control, 简称 RNC)组成, 它主要负责无线信号的收发, 通过空中 接口和终端联系, 管理空中接口的无线资源、 资源调度、 接入控制。 上述服务 GPRS支持节点是升级过的 SGSN,能够支持与服务网关之间的 S4接口, 并与移动性管理单元之间采用 GTPv2协议进行互通。 而对于支持 3G核心网的 SGSN 来说 PS域网络架构与图 1有所不同。 此时 SGSN与 MME采用 Gn接口相连, 互通采 用 GTPvl协议。 SGSN不能与服务网关相连, 通过 Gn接口连接到网关 GPRS支持节 点 ( Gateway GPRS Support Node, 简称 GGSN) 直接进行分组数据网络访问。 家庭基站 (Home NodeB, 简称为 HNB) 或者演进的家庭基站 (Home eNodeB, 简称 He B) 是一类小型、 低功率的基站, 作为某些用户的专属资源, 部署在家庭、 团体、 公司或者学校等私人场所使用, 主要是为了给用户提供更高的业务速率并降低 使用高速率服务所需要的费用, 同时弥补已有分布式蜂窝无线通信系统覆盖的不足。 家庭基站的优点是实惠、 便捷、 低功率输出、 即插即用、 宽带接入、 使用单模终端等。 家庭基站可以应用在第三代(3 Generation,简称为 3G)或者长期演进(Long Term
Evolution, 简称为 LTE) 移动通信网络中。 为了便于对家庭基站进行管理, 在网络中 引入了一个新网元, 即家庭基站网关。 家庭基站网关主要执行的功能为: 验证家庭基 站的安全性,对家庭基站的运行进行维护管理,根据运营商要求配置和控制家庭基站, 负责交换核心网和家庭基站的数据信息。 图 2是 3G家庭基站网络架构图, 如图 2所示, 3G家庭基站通过新定义的 Iuh接 口连接至家庭基站网关, 家庭基站网关提供到核心网分组域和电路域的 IuPS和 IuCs 接口。 对于 3G网络来说家庭基站网关必选部署用来屏蔽引入家庭基站后对终端和网 络侧的影响。对于 LTE网络来说家庭基站网关可选部署, 因此 LTE家庭基站和核心网 连接有两种方式, 一种是家庭基站和核心网网元直接相连, 另一种是家庭基站通过网 关和核心网网元相连, 如图 3、 4所示。 对于图 4所示引入家庭基站网关的场景, 家庭 基站网关可以不集成用户面功能, 家庭基站和核心网用户面网关间直接建立用户面, 这样可以使用户面扁平化, 数据传输时延减小, 如图 5所示。 家庭基站除了支持通过移动核心网络的接入之外, 还可以支持本地 IP接入功能, 在家庭基站具备本地 IP接入能力并且用户签约允许本地 IP访问的条件下, 可以实现 用户对家庭网络其他 IP设备或者互联网络的本地接入。通过本地接入功能, 可以实现 Internet数据业务的分流, 降低核心网负荷, 并且对于家庭网络设备的访问可以不通过 核心网来进行转发, 数据传输便捷高效。 本地 IP接入功能在宏蜂窝上也可以使用, 主 要用途和家庭基站类似, 更多的是应用在本地 IP接入英特网 (Internet)这种场景, 目 的是降低核心网负荷。 图 6分别给出了实现上述本地接入功能的架构。 其中, 本地接入网关作为本地接 入到外部网络 (例如 internet) 的网络, 提供地址分配、 计费、 分组包过滤、 策略控制 等功能。 该网元作为一个逻辑单元模块在实际部署的时候建议将其和现有的家用基站 或者基站联合部署。 对于家用基站接入的场景, 网络中还可能存在家用基站网关, 对 于有家用基站网关的场景可以在数据路径上。 相关技术中, 建立 PDN连接或者 PDP激活的流程如图 7所示。 这里以 UE接入 GPRS 网络为例说明策略如何下发, 接入演进的分组交换核心网 (Evolved Packet Switched Core, 简称为 Evolved PS Core) (简称为 EPC) 网络是类似的过程。 该过程 主要包括以下处理: 步骤 S702, 终端发起 PDP激活请求, 该条非接入层消息经由基站带给 SGSN。其 中, 该消息中携带终端希望接入的 APN信息。 步骤 S704, SGSN根据终端提供接入点名称 (Access Point Name, 简称为 APN) 信息, 构建域名服务(Domain Name Server, 简称为 DNS)查询请求消息, 向 DNS月艮 务器查询可用的 GGSN地址。 为了选择本地网关, 在构建 DNS请求时还需要包含 UE 接入的位置信息, 该信息可以是基站标识或者路由区标识。 步骤 S706, DNS服务器根据存储信息向 SGSN返回查询响应消息, 其中, 该查 询响应消息包含可用的 GGSN地址信息。该信息中可以包含一个或者多个 GGSN地址。 步骤 S708, SGSN从返回的 GGSN地址或者地址列表中选择 GGSN。 步骤 S710, SGSN向本地网关节点发送 PDP激活请求, 其中携带 UE标识, PDP 类型, QoS信息, 计费信息等参数。 具体地,如果是接入 GPRS网络,则本地网关节点为 GGSN,如果接入 EPC网络, 则核心网网关指的是 SGW和 PGW。接入的网络不同, 消息有所不同,但是作用类似, 这里以接入 GRPS网络的描述为例。 步骤 S712, 本地网关节点对 PDP激活请求消息中携带的参数进行验证, 并对请 求中携带的 QoS参数进行授权。 本地网关向 SGSN返回 PDP激活响应, 其中携带为 UE分配的隧道端标识, 授权的 QoS参数等信息。 步骤 S714, SGSN向基站发送承载指配请求,其中携带 UE的 MSISDN号码, APN, QoS参数等信息。 步骤 S716, 如果基站接受了本地网关节点下发的 QoS参数, 则基站发起 RRC连 接建立的过程。 步骤 S718, 基站向 SGSN返回 RAB指配响应消息。 如果同时建立多条承载, 则 基站会返回多个 RAN指配响应消息。 如果基站无法接受 RAB指配消息中的 QoS参数,则在返回的 RAN指配响应消息 中指示给 SGSN。 SGSN根据该指示, 可以选择下发新的 QoS参数。 步骤 S720, SGSN根据是否建立直接隧道, 判断是否要向本地网关节点发送 PDP 更新请求, 如果发送, 则其中携带基站的隧道端标识。 如果 QoS与之前核心网网关下 发的 QoS不一致, 则 SGSN通过 PDP更新过程通知本地网关。 步骤 S722, SGSN向终端返回 PDP激活响应, 其中, 该激活响应携带有授权的 QoS参数等信息。 由图 7可知, 为了支持本地接入, 需要对现有的移动管理单元进行改进及升级。 因此, 为了屏蔽引入本地接入业务对现有的移动管理单元的上述改动, 需要提出一种 新的网络架构。 发明内容 针对相关技术中为了支持本地接入, 需要对现有的移动管理单元进行改进及升级 等问题, 本发明提供了一种查询网关的方法及系统, 以解决上述问题至少之一。 根据本发明的一个方面, 提供了一种查询网关的方法。 根据本发明的查询网关的方法, 应用于实现本地接入的网络中, 该网络包括选择 管理单元, 上述方法包括: 选择管理单元向 DNS服务器发送网关查询请求, 其中, 该 网关查询请求包括 APN信息和 /或位置信息, 或者, APN信息和位置信息中的至少一 个以及选择核心网网关指示信息的组合;选择管理单元接收来自于 DNS服务器返回的 网关查询响应, 其中, 携带查询得到的一个或多个网关地址。 在上述方法中, DNS服务器返回一个或多个网关地址包括: DNS服务器根据 APN 信息和 /或位置信息查询得到一个或多个本地网关地址; 或者 DNS服务器根据 APN信 息和位置信息中的至少一个以及选择核心网网关指示信息的组合, 查询得到一个或多 个本地网关地址以及一个或多个核心网网关地址。 在上述方法中, 在选择管理单元向 DNS服务器发送网关查询请求之前, 还包括: 移动管理单元向 DNS服务器发送查询选择管理单元的请求;移动管理单元接收来自于 DNS服务器返回的一个或多个选择管理单元地址; 移动管理单元根据一个或多个选择 管理单元地址确定选择管理单元。 在上述方法中, 在移动管理单元根据一个或多个选择管理单元地址选定选择管理 单元之后, 选择管理单元向 DNS服务器发送网关查询请求之前, 还包括: 移动管理单 元向选择管理单元发送承载建立请求, 其中, 承载建立请求携带有: 位置信息。 在上述方法中, 在选择管理单元接收来自于 DNS 服务器返回的网关查询响应之 后, 还包括以下之一: 选择管理单元选取本地网关地址, 并向其对应的本地网关发送 承载建立请求, 其中, 该承载建立请求携带有位置信息; 选择管理单元选取本地网关 地址, 并向其对应的本地网关发送承载建立请求, 其中, 该承载建立请求携带有位置 信息和 DNS服务器返回的一个或者多个核心网网关地址。 在上述方法中, 在选择管理单元向选取的本地网关地址对应的本地网关发送承载 建立请求之后,还包括: 如果本地网关接收的承载建立请求中不包含核心网网关地址, 则向 DNS服务器发送查询核心网网关地址的请求, 其中, 该请求包括: APN信息和 位置信息中的至少一个以及选择核心网网关指示信息的组合; 本地网关接收来自于 DNS服务器返回的查询响应消息, 其中, 该查询响应消息携带有一个或多个核心网网 关地址; 本地网关从返回的一个或多个核心网网关地址中选择核心网网关地址; 如果 本地网关接收的承载建立请求中包含一个或多个核心网网关地址, 则本地网关从返回 的一个或多个核心网网关地址中选择核心网网关地址。 在上述方法中, 在选择管理单元接收来自于 DNS 服务器返回的网关查询响应之 后, 还包括: 选择管理单元选取本地网关地址和核心网网关地址, 并向选取的本地网 关地址发送承载建立请求, 其中, 该承载建立请求携带有位置信息和选取的核心网网 关地址。 在上述方法中, 在选择管理单元向选取的本地网关地址对应的本地网关发送承载 建立请求之后, 还包括: 本地网关确定是否需要进行数据分流; 如果需要分流, 本地 网关对承载建立请求中携带的参数进行验证和授权; 如果不需要分流, 本地网关向核 心网网关发送承载建立请求。 在上述方法中, 位置信息包括以下至少之一: 终端的路由区标识、 小区标识、 基 站标识、 闭合用户组 CSG标识、 接入网标识。 在上述方法中, 还包括: 本地网关或者选择管理单元对接收到的承载建立消息和 发送出的承载建立消息执行协议转换操作。 在上述方法中, 当接入的网络为演进的分组交换核心网 EPC网络时, 移动管理单 元为移动管理实体 MME或者服务通用分组无线业务支持节点 SGSN, 承载建立请求 为创建会话请求; 当接入的网络为通用分组无线业务 GPRS网络时, 移动管理单元为 SGSN, 承载建立请求为创建分组数据协议 PDP上下文请求; 当所述接入的网络为演 进的 EPC网络时, 通过非 3GPP接入网接入所述接入的网络时, 所述移动管理单元为 非 3GPP接入网关、 增强的数据网络网关、 或者在接入网侧执行 EPC网络网关选择的 网元, 所述承载建立请求为创建会话请求。 根据本发明的另一方面, 提供了一种查询网关的系统。 根据本发明的查询网关的系统, 应用于实现本地接入的网络中, 该查询网关的系 统包括: 选择管理单元和 DNS服务器; 其中, 选择管理单元, 包括: 第一发送模块, 设置为向 DNS服务器发送网关查询请求, 其中, 网关查询请求包括 APN信息和 /或位 置信息, 或者, APN信息和位置信息中的至少一个以及选择核心网网关指示信息的组 合; 第一接收模块, 设置为接收来自于 DNS服务器返回的网关查询响应, 其中, 网关 查询响应携带有查询得到的一个或多个网关地址。 DNS服务器,包括:第二接收模块, 设置为接收来自于选择管理单元的网关查询请求; 查询模块, 设置为根据 APN信息和 /或位置信息,或者, APN信息和位置信息中的至少一个以及选择核心网网关指示信息 的组合查询得到的一个或多个网关地址; 第二发送模块, 设置为向选择管理单元发送 一个或多个网关地址。 在上述系统中, 查询模块包括: 第一查询子模块, 设置为根据 APN信息和 /或位 置信息查询得到一个或多个本地网关地址; 第二查询子模块, 设置为根据 APN信息和 位置信息中的至少一个以及选择核心网网关指示信息的组合, 查询得到一个或多个本 地网关地址以及一个或多个核心网网关地址。 在上述系统中, 还包括: 移动管理单元, 其中, 该移动管理单元包括: 第三发送 模块, 设置为向 DNS服务器发送查询选择管理单元的请求; 第三接收模块, 设置为接 收来自于 DNS服务器返回的一个或多个选择管理单元地址; 第一确定模块, 设置为根 据一个或多个选择管理单元地址确定选择管理单元; 第四发送模块, 设置为向选择管 理单元发送承载建立请求, 其中, 承载建立请求携带有: 位置信息。 在上述系统中, 选择管理单元还包括以下之一: 第一处理模块, 设置为选取本地 网关地址, 并向其发送承载建立请求, 其中, 该承载建立请求携带有位置信息; 第二 处理模块, 设置为选取本地网关地址, 并向其发送承载建立请求, 其中, 该承载建立 请求携带有位置信息和 DNS服务器返回的一个或者多个核心网网关地址;第三处理模 块, 设置为选取本地网关地址和核心网网关地址, 并向选取的本地网关地址发送承载 建立请求, 其中, 该承载建立请求携带有位置信息和选取的核心网网关地址。 在上述系统中, 还包括: 本地网关, 本地网关包括: 第二确定模块, 设置为确定 是否需要进行数据分流; 验证授权模块, 设置为在第二确定模块输出为是时, 对承载 建立请求中携带的参数进行验证和授权; 第五发送模块, 设置为在第二确定模块输出 为否时, 向核心网网关发送承载建立请求。 通过本发明, 在实现本地接入的网络中新增一个选择管理单元, 该选择管理单元 与 DNS服务器进行交互, 查询网关地址, 从而实现了本地接入。解决了相关技术中为 了支持本地接入, 需要对现有的移动管理单元进行改进及升级等问题, 进而可以有效 屏蔽引入本地接入业务对现有的移动管理单元的改动。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本发 明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图 中: 图 1是相关技术中演进分组域系统的结构示意图; 图 2是相关技术中 3G家庭基站网络架构的示意图; 图 3是相关技术中第一种家庭基站网络架构的示意图; 图 4是相关技术中第二种家庭基站网络架构的示意图; 图 5是相关技术中第三种家庭基站网络架构的示意图; 图 6是相关技术中实现本地接入的网络架构的示意图; 图 7是相关技术中建立 PDN或者激活 PDP上下文的流程示意图; 图 8是根据本发明实施例的查询网关的方法的流程图; 图 9是根据本发明实例一的实现本地接入的流程图; 图 10是根据本发明实例二的实现本地接入的流程图; 图 11是根据本发明实施例的查询网关的系统的结构框图; 图 12是根据本发明优选实施例的查询网关的系统的结构框图; 图 13是根据本发明实例一的实现本地接入的网络架构示意图; 图 14是根据本发明实例二的实现本地接入的网络架构示意图; 图 15是根据本发明实例三的实现本地接入的网络架构示意图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是, 在不冲突的 情况下, 本申请中的实施例及实施例中的特征可以相互组合。 图 8是根据本发明实施例的查询网关的方法的流程图。 上述方法主要应用于实现 本地接入的网络中, 为了屏蔽引入本地接入业务对现有的移动管理单元的改动, 需要 在上述实现本地接入的网络中增加一个选择管理单元。 如图 8所示, 本发明实施例的 查询网关的方法主要包括以下处理: 步骤 S802: 选择管理单元向 DNS服务器发送网关查询请求, 其中, 网关查询请 求包括 APN信息和 /或位置信息, 或者, APN信息和位置信息中的至少一个以及选择 核心网网关指示信息的组合; 步骤 S804: 选择管理单元接收来自于 DNS服务器返回的网关查询响应, 其中, 携带查询得到的一个或多个网关地址。 其中, 上述一个或多个网关地址可以是本地网关地址, 也可以是本地网关地址和 核心网网关地址的组合。 上述方法中, 在实现本地接入的网络中新增一个选择管理单元, 该选择管理单元 与 DNS服务器进行交互, 查询网关地址, 从而实现了本地接入。解决了相关技术中为 了支持本地接入, 需要对现有的移动管理单元进行改进及升级等问题, 进而可以有效 屏蔽引入本地接入业务对现有的移动管理单元的改动。 优选地, 上述位置信息包括但不限于以下至少之一: 终端的路由区标识、 小区标 识、 基站标识、 CSG标识、 接入网标识。 优选地, 上述 DNS服务器根据第一信息 (即 APN信息和 /或位置信息)或者第一 信息和第二信息的组合(即 APN信息和位置信息中的至少一个以及选择核心网网关指 示信息的组合) 查询得到的一个或多个网关地址进一步包括以下处理: 当网关查询请求包含第一信息时, DNS服务器根据第一信息查询得到一个或多个 本地网关地址; 当网关查询请求包含第一信息和第二信息时, DNS服务器根据第一信息和第二信 息的组合, 查询得到一个或多个本地网关地址以及一个或多个核心网网关地址。 优选地, 在执行上述步骤 S102之前, 上述方法还可以包括以下处理:
( 1 ) 移动管理单元向 DNS服务器发送查询选择管理单元的请求;
(2)移动管理单元接收来自于 DNS服务器返回的一个或多个选择管理单元地址; ( 3 ) 移动管理单元根据一个或多个选择管理单元地址确定选择管理单元。 在具体实施过程中, DNS服务器通过移动管理单元发送的查询选择管理单元的请 求中携带的 APN和 /或位置信息只能够查询到选择管理单元地址, 之后, 将查询到的 选择管理单元地址返回至选择管理单元, 由选择管理单元负责选择本地网关或者本地 网关与核心网网关的组合。 优选地, 在移动管理单元根据一个或多个选择管理单元地址选定选择管理单元之 后, 选择管理单元向 DNS服务器发送网关查询请求之前, 还可以包括以下处理: 移动 管理单元向选择管理单元发送承载建立请求, 其中, 该承载建立请求携带有: 位置信 息。 通过上述处理, 选择管理单元接收到上述位置信息, 之后可以使用该位置信息构 造发送给 DNS服务器的全称域名 (Fully Qualified Domain Name, 简称为 FQDN), 并 将构造的 FQDN作为 DNS查询的输入参数。 当然, 选择管理单元也可以通过 APN信 息构造 FQDN, 但是在标签信息携带上述位置信息。 DNS服务器可以根据接收到的上 述位置信息查询本地网关地址。 在具体实施过程中, 当网关查询请求仅包括 APN信息或者 APN信息和标签信息 的组合时,标签信息还携带有: 指示 DNS服务器对输出的多个网关地址进行排序的信 息。 在具体实施过程中, 如果选择管理单元仅将 APN信息, 或者 APN信息和标签信 息发送给 DNS服务器, 则选择管理单元可以在标签信息中指示 DNS服务器对输出的 多个网关地址进行排序的信息, DNS服务器可以根据网络架构对多个网关地址进行排 序并将位置信息进行输出, 由选择管理单元从网关列表中选取网关地址。 优选地, 在步骤 S804之后, 还可以包括以下之一的处理: 处理(1 )选择管理单元选取本地网关地址, 并向其发送承载建立请求, 其中, 该 承载建立请求携带有位置信息; 处理(2)选择管理单元选取本地网关地址, 并向其发送承载建立请求, 其中, 该 承载建立请求携带有位置信息和 DNS服务器返回的一个或者多个核心网网关地址。 处理(3 )选择管理单元选取本地网关地址和核心网网关地址, 并向选取的本地网 关地址发送承载建立请求, 其中, 该承载建立请求携带有位置信息和选取的核心网网 关地址。 其中, 对于上述处理 (1 ) (2), 在选择管理单元向选取的本地网关地址对应的本 地网关发送承载建立请求之后, 还可以包括以下处理: 如果本地网关接收的承载建立请求中不包含核心网网关地址,贝 ij向 DNS服务器发 送查询核心网网关地址的请求, 其中, 该请求包括: APN信息和位置信息中的至少一 个以及选择核心网网关指示信息的组合;本地网关接收来自于 DNS服务器返回的查询 响应消息, 其中, 该查询响应消息携带有一个或多个核心网网关地址; 本地网关从返 回的一个或多个核心网网关地址中选择核心网网关地址; 如果本地网关接收的承载建立请求中包含一个或多个核心网网关地址, 则本地网 关从返回的一个或多个核心网网关地址中选择核心网网关地址。 优选地, 对于上述处理 (1 ) (2) (3 ), 在选择管理单元向选取的本地网关地址对 应的本地网关发送承载建立请求之后, 还可以包括以下处理:
( 1 ) 本地网关确定是否需要进行数据分流;
(2) 如果需要, 本地网关对承载建立请求中携带的参数进行验证和授权;
(3 ) 否则, 本地网关向核心网网关发送承载建立请求。 在具体实施过程中,如果选择管理单元向 DNS服务器发送的网关查询请求中携带 了用于指示返回核心网网关地址的标签信息 (即上述第二信息), 则在步骤 S804中, DNS 服务器向选择管理单元返回的网关查询响应中携带了一个或多个核心网网关地 址。 选择管理单元在上述一个或多个核心网网关地址中选择一个携带在承载建立请求 中发送给本地接入网关, 之后, 在无需数据分流时, 本地接入网关向选择的核心网网 关地址对应的核心网网关发送承载建立请求。 在具体实施过程中,如果选择管理单元向 DNS服务器发送的网关查询请求中没有 携带了用于指示返回核心网网关地址的标签信息(即上述第二信息), 则在无需数据分 流时,本地接入网关需要再次向 DNS服务器发送网关查询请求,查询核心网网关地址。 之后在查询获取到的核心网网关地址中选定一个, 并向选定的核心网网关地址对应的 核心网网关发送承载建立请求。 优选地, 在信息交互的流程中, 上述本地网关或者选择管理单元还可以对接收到 的消息执行协议转换操作。 即完成 GTPvl消息和 GTPv2消息转换, 例如, 移动管理 单元向本地网关 /选择管理单元发送 GTPvl 消息, 但是本地网关 /选择管理单元将 GTPvl消息转换为 GTPv2消息, 并发送出去。 在优选实施过程中, 选择管理单元可以是单独设置的物理实体, 也可以同本地网 关或者移动性管理单元合设。 以下结合图 9和图 10详细描述上述优选实施方式。 图 9是根据本发明实例一的实现本地接入的流程图。 如图 9所示, 该流程主要包 括以下处理: 步骤 S902, 终端发起 PDP激活请求, 该条非接入层消息经由基站带给移动管理 单元中的 SGSN, 其中, 该消息中携带终端希望接入的 APN信息。 步骤 S904, SGSN根据终端提供的 APN信息, 构建 DNS查询请求消息, 向 DNS 服务器查询可用的 GGSN地址。 其中, DNS服务器中设置为, 如果根据 APN信息构建 DNS查询请求, 则只能够 查询到选择管理单元地址。 步骤 S906, DNS根据存储信息向 SGSN返回查询响应消息, 其中, 该查询响应 消息包含可用的选择管理单元地址信息。 该信息中可以包含一个或者多个选择管理单 元地址。 步骤 S908, SGSN从返回的选择管理单元地址或者地址列表中选择选择管理单元。
SGSN向选择管理单元发送创建 PDP上下文请求,其中携带 UE标识, PDP类型, QoS 信息, 计费信息, APN, 终端的位置信息等参数。 其中, 上述位置信息可以包含但不 限于: UE的路由区标识, 小区标识, CSG标识, 基站标识, 接入网标识 (名称) 等。 步骤 S910, 选择管理单元根据终端提供的第一信息(APN和 /或位置信息), 或者 第一信息和第二信息 (标签信息) 的组合, 构建 DNS查询请求消息, 向 DNS查询可 用的本地网关地址和 /或核心网网关地址。 该步骤中, 选择管理单元可以根据位置信息和 /或 APN, 查询本地网关地址。可选 的, 进一步在选择本地网关之后, 根据 APN和标签信息查询核心网网关地址。标签指 的是,通过特殊的指示通知 DNS服务器返回真正的核心网网关地址而非选择管理单元 地址。 该步骤可以通过一次或者多次查询完成, 这里只描述一次, 但是不对次数做限 定。 步骤 S912, DNS服务器根据查询请求查询相应的地址信息。 步骤 S914, DNS服务器返回查询响应消息, 其中, 该查询响应消息包含可用的选 择本地网关信息, 或者本地网关信息和核心网网关信息的组合。 该信息中的地址可以 包含一个或者多个网关地址。 步骤 S916,选择管理单元从返回的本地网关地址或者地址列表中选择本地网关地 址。 选择管理单元向本地网关发送创建 PDP上下文请求, 其中携带 UE标识, PDP类 型, QoS信息, 计费信息, APN, 终端的位置信息等参数。 如果步骤 1005中还查询了 核心网网关地址, 则该消息中还包含核心网网关信息。 步骤 S918, 本地网关根据静态配置, 或者动态获取的路由策略决定是否将该 PDP 上下文上的数据分流。如果是,则跳过步骤 S920~S922。否则,本地网关根据步骤 S916 的消息中是否携带核心网网关地址判断是否要执行 DNS查询过程。如果携带了, 则无 需执行 DNS查询过程,否则本地网关需要查询核心网网关地址,查询过程与步骤 S910 中描述类似, 这里不做赘述。 步骤 S920,本地网关向核心网网关发送创建 PDP上下文请求,其中携带 UE标识, PDP类型, QoS信息, 计费信息, APN, 终端的位置信息等参数。 步骤 S922, 核心网网关对创建 PDP上下文请求消息中携带的参数进行验证, 并 对请求中携带的 QoS参数进行授权。 核心网网关向本地网关返回创建 PDP上下文响 应, 其中携带为 UE分配的隧道端标识, 授权的 QoS参数等信息。 步骤 S924 S926, 如果步骤 S918中判断是需要分流而不执行步骤 S920 S922, 则 本地网关创建 PDP 上下文请求消息中携带的参数进行验证, 并对请求中携带的 QoS 参数进行授权。本地网关通过选择管理单元向本地网关返回创建 PDP上下文响应, 其 中携带为 UE分配的隧道端标识, 授权的 QoS参数等信息。 步骤 S928, 执行 PDP激活的剩余流程, 与现有技术类似, 这里不做赘述。 图 10是根据本发明实例二的实现本地接入的流程图。 如图 10所示, 该流程主要 包括以下处理: 步骤 S1002, 终端发起 attach请求, 或者 PDN连接建立请求, 该条非接入层消息 经由基站带给 SGSN。该消息中携带终端希望接入的 APN信息。步骤 S1002中如果发 生在 attach过程中, 则 APN信息的获取是在建立安全连接之后, 该过程是现有技术这 里不做赘述。 步骤 S1004, 移动管理单元根据终端提供的 APN信息, 构建 DNS查询请求消息, 向 DNS查询可用的核心网网关地址。 其中, DNS服务器中设置为, 如果根据位置信息构建 DNS查询请求, 则只能够 查询选择管理单元地址。 其中, 上述位置信息, 包括但不限于: 路由区标识, 小区标识, 基站标识, 跟踪 区标识。 步骤 S1006, DNS根据存储信息向移动性管理单元返回查询响应消息, 其中包含 可用的选择管理单元地址信息, 该信息中可以包含一个或者多个选择管理单元地址。 步骤 S1008, 移动性管理单元从返回的选择管理单元地址或者地址列表中选择选 择管理单元。 移动性管理单元向选择管理单元发送创建会话请求消息, 其中携带 UE 标识, PDP类型, QoS信息, 计费信息, APN, 终端的位置信息等参数。 其中, 该位 置信息可以包含但不限于是 UE的路由区标识, 小区标识, 基站标识, CSG标识, 接 入网名称等。 可选的还可以携带核心网 PGW地址。 步骤 S1010, 选择管理单元根据终端提供的第一信息 (APN和 /或位置信息), 第 一信息和第二信息 (标签信息) 的组合, 构建 DNS查询请求消息, 向 DNS查询可用 的本地网关地址。 该步骤中, 选择管理单元可以根据位置信息和 APN, 查询本地网关地址。 该步骤 可以通过一次或者多次查询完成, 这里只描述一次, 但是不对次数做限定。 步骤 S1012, DNS服务器根据查询请求的查询相应的地址信息。 步骤 S1014, DNS服务器返回查询响应消息,其中包含可用的选择本地网关信息。 该信息中可以包含一个或者多个地址。 步骤 S1016, 选择管理单元从返回的本地网关地址或者地址列表中选择本地网关 地址。 选择管理单元向本地网关发送创建会话请求, 其中携带 UE标识, PDP类型, QoS信息, 计费信息, APN, 终端的位置信息等参数。 步骤 S1018,本地网关根据静态配置,或者动态获取的路由策略决定是否将该 PDN 连接的数据分流。 如果是, 则跳过步骤 S1020~S1022。 否则执行后续流程。 步骤 S1020, 本地网关向核心网网关发送创建会话请求, 其中携带 UE标识, PDP 类型, QoS信息, 计费信息, APN, 终端的位置信息等参数。 步骤 S1022, 核心网网关对创建 PDP上下文请求消息中携带的参数进行验证, 并 对请求中携带的 QoS参数进行授权。 核心网网关向本地网关返回创建会话响应, 其中 携带为 UE分配的隧道端标识, 授权的 QoS参数等信息。 步骤 S1024~S1026,如果步骤 1109中判断是需要分流而不执行步骤 S1020~S1022, 则本地网关创建会话请求消息中携带的参数进行验证, 并对请求中携带的 QoS参数进 行授权。 本地网关通过选择管理单元向本地网关返回创建会话响应, 其中携带为 UE 分配的隧道端标识, 授权的 QoS参数等信息。 步骤 S1028, 执行 PDN连接建立, 或者 attach的剩余流程, 与现有技术类似, 这 里不做赘述。 图 11是根据本发明实施例的查询网关的系统的结构框图,该系统应用于实现本地 接入的网络中, 如图 11所示, 该查询网关的系统包括: 选择管理单元 1和 DNS服务 器 2; 选择管理单元 1, 包括: 第一发送模块 10, 设置为向 DNS服务器发送网关查询请求, 其中, 网关查询请 求包括第一信息或者第一信息和第二信息的组合,第一信息包括: 终端提供的 APN信 息和 /或位置信息, 第二信息包括: 设置为指示返回核心网网关地址的标签信息; 优选地, 上述位置信息包括但不限于以下至少之一: 终端的路由区标识、 小区标 识、 基站标识、 CSG标识、 接入网标识。 第一接收模块 12, 设置为接收来自于 DNS服务器返回的网关查询响应, 其中, 网关查询响应携带有查询得到的一个或多个网关地址。
DNS服务器 2, 包括: 第二接收模块 20, 设置为接收来自于选择管理单元的网关查询请求; 查询模块 22, 设置为根据第一信息或者第一信息和第二信息的组合查询得到的一 个或多个网关地址; 第二发送模块 24, 设置为向选择管理单元发送一个或多个网关地址。 其中, 上述一个或多个网关地址可以是本地网关地址, 也可以是本地网关地址和 核心网网关地址的组合。 上述系统中的选择管理单元与 DNS服务器进行交互, 查询网关地址, 从而实现了 本地接入。 解决了相关技术中为了支持本地接入, 需要对现有的移动管理单元进行改 进及升级等问题,进而可以有效屏蔽引入本地接入业务对现有的移动管理单元的改动。 优选地, 如图 12所示, 上述查询模块 22可以进一步包括: 第一查询子模块 (图 12 中未示出), 设置为根据第一信息查询得到一个或多个本地网关地址; 第二查询子 模块 (图 12中未示出), 设置为根据第一信息和第二信息的组合, 查询得到一个或多 个本地网关地址以及一个或多个核心网网关地址。 优选地, 如图 12所示, 上述查询网关的系统还可以包括: 移动管理单元 3, 移动 管理单元包括: 第三发送模块 30, 设置为向 DNS服务器发送查询选择管理单元的请 求, 第三接收模块 32, 设置为接收来自于 DNS服务器返回的一个或多个选择管理单 元地址; 第一确定模块 34, 设置为根据一个或多个选择管理单元地址确定选择管理单 元; 以及第四发送模块 36, 设置为向选择管理单元发送承载建立请求, 其中, 承载建 立请求携带有: 位置信息。 优选地, 如图 12所示, 上述选择管理单元 1还可以包括: 第一处理模块 14, 设 置为选取本地网关地址, 并向其发送承载建立请求, 其中, 该承载建立请求携带有位 置信息; 第二处理模块 16, 设置为选取本地网关地址, 并向其发送承载建立请求, 其 中,该承载建立请求携带有位置信息和 DNS服务器返回的一个或者多个核心网网关地 址; 第三处理模块 18, 设置为选取本地网关地址和核心网网关地址, 并向选取的本地 网关地址发送承载建立请求, 其中, 该承载建立请求携带有位置信息和选取的核心网 网关地址。 优选地, 如图 12所示, 上述查询网关的系统还可以包括: 本地网关 4, 该本地网 关 4可以进一步包括: 第二确定模块 40, 设置为确定是否需要进行数据分流; 验证授 权模块 42, 设置为在第二确定模块输出为是时, 对承载建立请求中携带的参数进行验 证和授权; 第五发送模块 44, 设置为在第二确定模块输出为否时, 向核心网网关发送 承载建立请求。 以下结合图 13和图 14描述实现本地接入的网络 (该网络包含查询网关的系统) 架构。 图 13是根据本发明实例一的实现本地接入的网络架构示意图。本架构适用于终端 从 GERAN/UTRAN/EUTRAN接入 EPC网络。 上述图 9或图 10描述的流程可以基于 该架构。该实施方式不限定基站类型,即家用基站或者普通基站。对于 UTRAN/GERAN 接入来说, 家用基站 /普通基站为 HNB/RNC, 移动管理单元主要由 SGSN和 MME构 成, 此处以 SGSN为例。 对于 EUTRAN接入来说, 家用基站 /基站为 He B/e B, 移 动管理单元是 MME。 对于家用基站的场景, 网络中可能存在家用基站网关, 如果存 在家用基站网关, 那么所有家用基站和移动管理单元之间的消息都需要经过家用基站 网关。 进一步的家用基站和本地网关之间的消息, 可以通过家用基站网关也可以不通 过家用基站网关。 对于通过家用基站网关转发消息的场景, 家用基站网关对经过的消 息进行透传, 透传的过程与本发明无关, 这里不做赘述。 本实施例中的核心网网关节 点指的是 SGW和 PGW, 或者是 PGW。 与相关技术相比, 新增了选择管理单元用于屏蔽引入本地连接业务对现有的移动 管理单元的修改。 对于移动管理单元来说, 选择管理单元是一个核心网网关, 移动管理单元通过
APN和 /或位置信息只能够选择到选择管理单元。选择管理单元负责选择本地网关,或 者本地网关和核心网网关的组合。 当选择管理单元设定为只负责选择本地网关时, 选择管理单元根据终端提供的位 置信息选择本地网关。 并将相关消息路由给本地网关。 本地网关根据分流策略, 决定 是否将该 PDP上下文 /PDN连接的数据分流出去。 如果决定分流, 则无需进一步选择 核心网网关, 否则本地网关根据 APN, 和 /或用户的位置信息选择核心网网关。 当选择管理单元设定为选择本地网关以及核心网网关时, 选择管理单元根据终端 提供的位置信息和 APN信息选择核心网网关和本地网关。并将相关消息路由给本地网 关, 其中包含核心网网关的相关信息。 本地网关根据分流策略, 决定是否将该 PDP上 下文/ PDN连接的数据分流出去。如果决定分流, 则无需进一步选择核心网网关, 否则 将相关消息转发给核心网网关。 对于核心网网关来说, 本地网关发送消息的方式类似移动性管理单元, 因此可以 做到对核心网网关和现有的移动性管理单元没有影响。 在具体实施过程中, 上述选择管理单元可以是单独存在的物理实体, 也可以同本 地网关或者移动性管理单元合设。 图 14是根据本发明实例二的实现本地接入的网络架构示意图。本架构适用于终端 从 GERAN/UTRAN接入 GPRS网络。 上述图 9描述的流程可以基于该架构。 该实施方式不限定基站类型, 即家用基站或者普通基站。 对于 UTRAN/GERAN 接入来说, 家用基站 /基站为 HNB/RNC, 移动管理单元是 SGSN。 对于家用基站的场 景, 网络中可能存在家用基站网关, 如果存在家用基站网关, 那么所有家用基站和移 动管理单元之间的消息都需要经过家用基站网关。 进一步的家用基站和本地网关之间 的消息, 可以通过家用基站网关也可以不通过家用基站网关。 对于通过家用基站网关 转发消息的场景, 家用基站网关对经过的消息进行透传, 透传的过程与本发明无关, 这里不做赘述。 本实施例中的核心网网关指的是 GGSN。 与相关技术相比, 新增了选择管理单元用于屏蔽引入本地连接业务对现有的移动 管理单元单元的修改。 对于移动管理单元来说, 选择管理单元是一个核心网网关, 移动管理单元通过 APN和 /或位置信息只能够选择到选择管理单元。选择管理单元负责选择本地网关或者 本地网关与核心网网关的组合。 选择管理单元设定为只负责选择本地网关时, 选择管理单元根据终端提供的位置 信息选择本地网关。 并将相关消息路由给本地网关。 本地网关根据分流策略, 决定是 否将该 PDP上下文 /PDN连接的数据分流出去。 如果决定分流, 则无需进一步选择核 心网网关, 否则本地网关根据 APN, 和 /或用户的位置信息选择核心网网关。 选择管理单元设定为选择本地网关以及核心网网关时, 选择管理单元根据终端提 供的位置信息和 APN信息选择核心网网关和本地网关。 并将相关消息路由给本地网 关, 其中包含核心网网关的相关信息。 本地网关根据分流策略, 决定是否将该 PDP上 下文/ PDN连接的数据分流出去。如果决定分流, 则无需进一步选择核心网网关, 否则 将相关消息转发给核心网网关。 此外, 本地网关或者选择管理单元还能够完成协议转换功能, 即完成 GTPvl消息 和 GTPv2消息转换,即 SGSN向本地网关 /选择管理单元发送 GTPvl消息,但是 selector 选择核心网网关的时候不限定 GGSN或者 PGW。 对于核心网网关来说, 本地网关发送消息的方式类似移动性管理单元, 因此可以 做到对核心网网关和现有的移动性管理单元没有影响。 在优选实施过程中, 选择管理单元可以是单独存在的物理实体, 也可以同本地网 关或者移动性管理单元合设。 图 15是根据本发明实例三的实现本地接入的网络架构示意图。本架构适用于终端 从非 3GPP定义的接入网络接入 3GPP核心网的情况。 考虑到其他接入技术,例如非 3GPP所定义的其他接入网,以后也可能接入到 EPC 网络中。 为了保证 UE在不同的接入技术接入间移动, 能够保证业务的连续性要求, 不同接入网选择的网关是相同。 因此当 EPC网络中引入选择管理单元后, 不同的接入 网网元都能连接到选择管理单元, 并由选择管理单元为其选择合适的本地网关或者核 心网网关。 与相关技术相比,新增了选择管理单元用于屏蔽引入本地连接业务对 non3GPP接 入网络的影响。 对于 non3GPP的接入网关, 或者增强的数据网络网关(ePDG), 或者在接入网侧 执行 EPC网络网关选择的网元来说, 选择管理单元是一个核心网网关, non3GPP的接 入网关, 或者增强的数据网络网关(ePDG), 或者在接入网侧执行 EPC网络网关选择 的网元通过 APN和或位置信息只能够选择到选择管理单元。选择管理单元负责选择本 地网关或者本地网关与核心网网关的组合。 选择管理单元设定为只负责选择本地网关时, 选择管理单元根据终端提供的位置 信息选择本地网关, 并将相关消息路由给本地网关。 本地网关根据分流策略, 决定是否将该连接的数据分流出去。 如果决定分流, 则 无需进一步选择核心网网关,否则本地网关根据 APN,和 /或用户的位置信息选择核心 网网关。 选择管理单元设定为选择本地网关以及核心网网关时, 选择管理单元根据终端提 供的位置信息和 APN信息选择核心网网关和本地网关, 并将相关消息路由给本地网 关, 其中包含核心网网关的相关信息。 本地网关根据分流策略, 决定是否将该连接的 数据分流出去。 如果决定分流, 则无需进一步选择核心网网关, 否则将相关消息转发 给核心网网关。 此外, 本地网关或者选择管理单元还能够完成协议转换功能, 即完成与接入网侧 的 PMIP或者 DSMIP协议与 GTP消息的转换, 即非 3GPP的接入网关, 或者增强的 数据网络网关 (ePDG), 或者在接入网侧执行 EPC 网络网关选择的网元向本地网关 / 选择管理单元发送 PMIP 或者, 但是选择管理单元选择核心网网关和或本地网关时 DSMIP协议时可以选择仅支持 GTPvl的 GGSN或者支持 GTPv2和 GTPvl的 PGW。 对于核心网网关来说, 本地网关发送消息的方式类似 non3GPP的接入网关, 或者 增强的数据网络网关(ePDG), 或者在接入网侧执行 EPC网络网关选择的网元, 因此 可以做到对核心网网关和现有的 non3GPP 的接入网关, 或者增强的数据网络网关 (ePDG), 或者在接入网侧执行 EPC网络网关选择的网元没有影响。 在优选实施过程中, 选择管理单元可以是单独存在的物理实体, 也可以同本地网 关或者 non3GPP的接入网关, 或者增强的数据网络网关(ePDG), 或者在接入网侧执 行 EPC网络网关选择的网元, 其中之一合设。 综上所述, 借助本发明提供的上述实施例, 在实现本地接入的网络中新增一个选 择管理单元, 该选择管理单元通过与 DNS服务器进行交互查询网关地址, 从而实现了 本地接入。 采用上述方案, 可以有效屏蔽引入本地接入业务对现有的移动管理单元的 改动, 既可以避免大量升级网络设备, 又可以很好的引入本地连接业务。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多个计算装置所 组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码来实现, 从而, 可以 将它们存储在存储装置中由计算装置来执行, 并且在某些情况下, 可以以不同于此处 的顺序执行所示出或描述的步骤, 或者将它们分别制作成各个集成电路模块, 或者将 它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样, 本发明不限制于任 何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的 任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种查询网关的方法, 应用于实现本地接入的网络中, 所述网络包括: 选择管 理单元, 所述方法包括:
所述选择管理单元向域名 DNS服务器发送网关查询请求,其中,所述网关 查询请求包括接入点名称 APN信息和 /或位置信息, 或者, 所述 APN信息和所 述位置信息中的至少一个以及选择核心网网关指示信息的组合;
所述选择管理单元接收来自于所述 DNS 服务器返回的网关查询响应, 其 中, 携带查询得到的一个或多个网关地址。
2. 根据权利要求 1所述的方法,其中,所述 DNS服务器返回一个或多个网关地址 包括:
所述 DNS服务器根据所述 APN信息和 /或位置信息查询得到一个或多个本 地网关地址; 或者
所述 DNS服务器根据所述 APN信息和所述位置信息中的至少一个以及选 择核心网网关指示信息的组合, 查询得到一个或多个本地网关地址以及一个或 多个核心网网关地址。
3. 根据权利要求 1所述的方法,其中,在所述选择管理单元向 DNS服务器发送所 述网关查询请求之前, 还包括:
移动管理单元向所述 DNS服务器发送查询选择管理单元的请求; 所述移动管理单元接收来自于所述 DNS 服务器返回的一个或多个选择管 理单元地址;
所述移动管理单元根据所述一个或多个选择管理单元地址确定所述选择管 理单元。
4. 根据权利要求 3所述的方法, 其中, 在所述移动管理单元根据所述一个或多个 选择管理单元地址选定所述选择管理单元之后,所述选择管理单元向 DNS服务 器发送网关查询请求之前, 还包括:
所述移动管理单元向所述选择管理单元发送承载建立请求, 其中, 所述承 载建立请求携带有: 所述位置信息。
5. 根据权利要求 2所述的方法, 其中, 在所述选择管理单元接收来自于所述 DNS 服务器返回的网关查询响应之后, 还包括以下之一:
所述选择管理单元选取本地网关地址, 并向其对应的本地网关发送承载建 立请求, 其中, 该承载建立请求携带有所述位置信息;
所述选择管理单元选取本地网关地址, 并向其对应的本地网关发送承载建 立请求,其中,该承载建立请求携带有所述位置信息和所述 DNS服务器返回的 一个或者多个核心网网关地址。
6. 根据权利要求 5所述的方法, 其中, 在所述选择管理单元向选取的本地网关地 址对应的本地网关发送承载建立请求之后, 还包括: 如果所述本地网关接收的承载建立请求中不包含核心网网关地址, 则向所 述 DNS服务器发送查询核心网网关地址的请求,其中,该请求包括:所述 APN 信息和所述位置信息中的至少一个以及选择核心网网关指示信息的组合; 所述 本地网关接收来自于所述 DNS服务器返回的查询响应消息,其中,该查询响应 消息携带有一个或多个核心网网关地址; 所述本地网关从返回的一个或多个核 心网网关地址中选择核心网网关地址;
如果所述本地网关接收的承载建立请求中包含一个或多个核心网网关地 址, 则所述本地网关从返回的一个或多个核心网网关地址中选择核心网网关地 址。
7. 根据权利要求 2所述的方法, 其中, 在所述选择管理单元接收来自于所述 DNS 服务器返回的网关查询响应之后, 还包括:
所述选择管理单元选取本地网关地址和核心网网关地址, 并向所述选取的 本地网关地址发送承载建立请求, 其中, 该承载建立请求携带有所述位置信息 和所述选取的核心网网关地址。
8. 根据权利要求 5或 7所述的方法, 其中, 在所述选择管理单元向所述选取的本 地网关地址对应的本地网关发送承载建立请求之后, 还包括:
所述本地网关确定是否需要进行数据分流;
如果需要分流, 所述本地网关对所述承载建立请求中携带的参数进行验证 和授权;
如果不需要分流, 所述本地网关向核心网网关发送承载建立请求。
9. 根据权利要求 1至 7中任一项所述的方法, 其中, 所述位置信息包括以下至少 之一: 终端的路由区标识、 小区标识、 基站标识、 闭合用户组 CSG标识、 接入 网标识。
10. 根据权利要求 1至 7中任一项所述的方法, 其中, 还包括: 所述本地网关或者 所述选择管理单元对接收到的承载建立消息和发送出的承载建立消息执行协议 转换操作。
11. 根据权利要求 1至 7中任一项所述的方法, 其中,
当所述接入的网络为演进的 EPC网络时,所述移动管理单元为移动管理实 体 MME或者服务通用分组无线业务支持节点 SGSN, 所述承载建立请求为创 建会话请求;
当所述接入的网络为通用分组无线业务 GPRS网络时, 所述移动管理单元 为 SGSN, 所述承载建立请求为创建分组数据协议 PDP上下文请求;
当所述接入的网络为演进的 EPC网络时, 通过非 3GPP接入网接入所述接 入的网络时, 所述移动管理单元为非 3GPP接入网关、 增强的数据网络网关、 或者在接入网侧执行 EPC网络网关选择的网元,所述承载建立请求为创建会话 请求。
12. 一种查询网关的系统, 应用于实现本地接入的网络中, 所述查询网关的系统包 括: 选择管理单元和域名 DNS服务器;
所述选择管理单元, 包括:
第一发送模块, 设置为向所述 DNS服务器发送网关查询请求, 其中, 所述 网关查询请求包括接入点名称 APN信息和 /或位置信息, 或者, 所述 APN信息 和所述位置信息中的至少一个以及选择核心网网关指示信息的组合;
第一接收模块, 设置为接收来自于所述 DNS服务器返回的网关查询响应, 其中, 所述网关查询响应携带有查询得到的一个或多个网关地址;
所述 DNS服务器, 包括: 第二接收模块,设置为接收来自于所述选择管理单元的所述网关查询请求; 查询模块, 设置为根据 APN信息和 /或位置信息, 或者, 所述 APN信息和 所述位置信息中的至少一个以及选择核心网网关指示信息的组合查询得到的所 述一个或多个网关地址; 第二发送模块,设置为向所述选择管理单元发送所述一个或多个网关地址。
13. 根据权利要求 12所述的系统, 其中, 所述查询模块包括:
第一查询子模块, 设置为根据所述 APN信息和 /或位置信息查询得到一个 或多个本地网关地址;
第二查询子模块,设置为根据所述 APN信息和所述位置信息中的至少一个 以及选择核心网网关指示信息的组合, 查询得到一个或多个本地网关地址以及 一个或多个核心网网关地址。
14. 根据权利要求 13所述的系统, 其中, 所述系统还包括: 移动管理单元, 所述移 动管理单元包括:
第三发送模块, 设置为向所述 DNS服务器发送查询选择管理单元的请求; 第三接收模块,设置为接收来自于所述 DNS服务器返回的一个或多个选择 管理单元地址;
第一确定模块, 设置为根据所述一个或多个选择管理单元地址确定所述选 择管理单元; 第四发送模块, 设置为向所述选择管理单元发送承载建立请求, 其中, 所 述承载建立请求携带有: 所述位置信息。
15. 根据权利要求 13所述的系统, 其中, 所述选择管理单元还包括以下之一: 第一处理模块, 设置为选取本地网关地址, 并向其发送承载建立请求, 其 中, 该承载建立请求携带有所述位置信息;
第二处理模块, 设置为选取本地网关地址, 并向其发送承载建立请求, 其 中,该承载建立请求携带有所述位置信息和所述 DNS服务器返回的一个或者多 个核心网网关地址; 第三处理模块, 设置为选取本地网关地址和核心网网关地址, 并向所述选 取的本地网关地址发送承载建立请求, 其中, 该承载建立请求携带有所述位置 信息和所述选取的核心网网关地址。
16. 根据权利要求 15所述的系统, 其中, 所述系统还包括: 本地网关, 所述本地网 关包括:
第二确定模块, 设置为确定是否需要进行数据分流; 验证授权模块, 设置为在所述第二确定模块输出为是时, 对承载建立请求 中携带的参数进行验证和授权;
第五发送模块, 设置为在所述第二确定模块输出为否时, 向核心网网关发 送承载建立请求。
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10230685B2 (en) 2016-05-20 2019-03-12 At&T Intellectual Property I, L.P. Subscriber session director
US10951575B1 (en) 2019-11-13 2021-03-16 Sprint Communications Company L.P. Domain name system (DNS) translations for co-located Gateway User Planes in wireless communication networks
US11146528B2 (en) 2019-11-13 2021-10-12 Sprint Communications Company L.P. Wireless communication service delivery over co-located gateway user planes

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103974237B (zh) * 2013-02-06 2017-06-20 中国移动通信集团公司 移动性管理方法及实体
US9674048B2 (en) * 2013-06-03 2017-06-06 Qualcomm Incorporated Efficient infrastructure service discovery with security
CN104754559B (zh) * 2013-12-27 2019-01-08 中国移动通信集团公司 一种dns查询方法及网元
CN112218334B (zh) * 2019-07-09 2023-07-04 中国移动通信集团安徽有限公司 核心网负荷的动态优化方法、装置及计算设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101080098A (zh) * 2007-06-01 2007-11-28 中国移动通信集团公司 一种通信方法和系统
CN101420792A (zh) * 2007-10-23 2009-04-29 华为技术有限公司 网关锚点分配方法、网络侧设备及用户终端
CN101483585A (zh) * 2008-01-07 2009-07-15 华为技术有限公司 一种网关选择的方法
US20100215019A1 (en) * 2007-07-10 2010-08-26 Panasonic Corporation Detection of mobility functions implemented in a mobile node

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050054663A (ko) * 2003-12-05 2005-06-10 한국전자통신연구원 무선 패킷 서비스 망에서의 부하 분산 방법 및 이를이용한 호 설정 방법
CN100512294C (zh) * 2005-09-28 2009-07-08 华为技术有限公司 一种选择网关通用分组无线服务支持节点的方法
CN101064937B (zh) * 2006-04-28 2010-09-08 华为技术有限公司 一种漫游用户的归属地的接入方法及系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101080098A (zh) * 2007-06-01 2007-11-28 中国移动通信集团公司 一种通信方法和系统
US20100215019A1 (en) * 2007-07-10 2010-08-26 Panasonic Corporation Detection of mobility functions implemented in a mobile node
CN101420792A (zh) * 2007-10-23 2009-04-29 华为技术有限公司 网关锚点分配方法、网络侧设备及用户终端
CN101483585A (zh) * 2008-01-07 2009-07-15 华为技术有限公司 一种网关选择的方法

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10230685B2 (en) 2016-05-20 2019-03-12 At&T Intellectual Property I, L.P. Subscriber session director
US10812443B2 (en) 2016-05-20 2020-10-20 At&T Intellectual Property I, L.P. Subscriber session director
US11349804B2 (en) 2016-05-20 2022-05-31 At&T Intellectual Property I, L.P. Subscriber session director
US10951575B1 (en) 2019-11-13 2021-03-16 Sprint Communications Company L.P. Domain name system (DNS) translations for co-located Gateway User Planes in wireless communication networks
US11146528B2 (en) 2019-11-13 2021-10-12 Sprint Communications Company L.P. Wireless communication service delivery over co-located gateway user planes
US11729136B2 (en) 2019-11-13 2023-08-15 T-Mobile Innovations Llc Domain name system (DNS) translations for co-located gateway user planes in wireless communication networks
US11784965B2 (en) 2019-11-13 2023-10-10 T-Mobile Innovations Llc Wireless communication service delivery over co-located gateway user planes

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