WO2013152545A1 - Procédé d'établissement de connexion et unité de passerelle - Google Patents

Procédé d'établissement de connexion et unité de passerelle Download PDF

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Publication number
WO2013152545A1
WO2013152545A1 PCT/CN2012/075872 CN2012075872W WO2013152545A1 WO 2013152545 A1 WO2013152545 A1 WO 2013152545A1 CN 2012075872 W CN2012075872 W CN 2012075872W WO 2013152545 A1 WO2013152545 A1 WO 2013152545A1
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Prior art keywords
terminal
identifier
external
external identifier
internal
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PCT/CN2012/075872
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English (en)
Chinese (zh)
Inventor
杨坤
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中兴通讯股份有限公司
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Publication of WO2013152545A1 publication Critical patent/WO2013152545A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels

Definitions

  • the present invention relates to the field of terminal communication technologies, and in particular, to a connection establishment method and a gateway unit.
  • the cellular wireless communication system is mainly composed of a core network (Core Network, abbreviated as CN), an access network (Radio Access Network, RAN for short), and a terminal.
  • the core network is responsible for non-access layer transactions, such as terminal location updates, and is the anchor point for the user plane.
  • the access network includes a base station, or a base station and a base station control, and the access network is responsible for access layer transactions (for example, management of radio resources), and the base stations may have physical or logical connections according to actual conditions, such as the base station 1 in FIG.
  • a connection with base station 2 or base station 3 and each base station can be connected to one or more core network nodes.
  • a User Equipment (UE) is a device that can communicate with a cellular wireless communication network, such as a mobile phone or a laptop.
  • SMS-SC Short Message Service Center
  • Mobility Management Entity An entity in the core network responsible for managing terminal access control, location information update, and handover, responsible for core network-to-terminal non-access stratum signaling control and the ability to register terminals to the network.
  • the Home Subscriber Server is an entity in the core network that is responsible for storing identity information, authentication information, and authorization information of the terminal device. Depending on the situation, the HSS can be used to store the identity information of the user and the binding information of the user and the terminal device, or only the identity information of the user (the binding information of the user and the terminal device can be saved by the gateway), or the identity of the terminal device can be directly saved. information.
  • the HSS is also responsible for the user's subscription database, as well as the user's authentication and authorization.
  • the business platform can query user or terminal information from the HSS.
  • the Serving Gateway (S-GW) is located on the user side. Its main functions are session management, routing and data forwarding, QoS control, accounting, and storage of information.
  • the Packet Data Network Gateway (P-GW) is located on the user side. Its main functions include IP address allocation, session management, PCRF selection, routing and data forwarding, QoS control, accounting, policy and charging execution.
  • Machine type communication-interoperability function entity A connection entity between the mobile communication network and the external public network, which can implement functions such as protocol conversion, address inquiry, and information storage.
  • the interworking function entity is connected to the MTC server, and can be connected to the mobile communication network element such as HSS or MME.
  • MTC AAA MTC Authentication, Authentication and Accounting Function Entity: In the Public Land Mobile Communication Network (HPLMN), the translation function between the International Mobile Subscriber Identity (IMSI) and the External Identity (EID) of the terminal is provided at the network exit. .
  • the MTC AAA can be deployed to return the EID based on the IMSI of the terminal, or can be deployed as a proxy server between the P-GW and the AAA server in the External Packet Data Network (PDN).
  • PDN External Packet Data Network
  • the access point name is usually stored in the HSS as the user's subscription data.
  • the user can also provide the A-S to the S-GW to instruct the S-GW to select the corresponding P-GW, P-GW. It is possible to determine which external network to access based on the APN.
  • the user or P-GW can choose to use the APN specified by the non-HSS.
  • the user can select different P-GWs through different APNs, ie the user can activate multiple Packet Data Protocol (PDP) contexts, each associated with an APN.
  • PDP Packet Data Protocol
  • the APN needs to perform domain name resolution through DNS to obtain the real IP address of the P-GW or external network node.
  • the existing solution uses the external identifier (EID, External Identifier) of the terminal to perform communication between the MTC server and the network, and stores the external identifier and internal identifier of the terminal, such as IMSI, in the network. Correspondence between them.
  • EID External Identifier
  • the technical problem to be solved by the present invention is to provide a method and apparatus for establishing a connection, which avoids the failure of the connection establishment of the terminal and the server due to the network erroneously responding to the trigger request.
  • a connection establishment method of the present invention includes:
  • the service gateway unit of the terminal receives the connection establishment request of the terminal, and queries the external identifier of the terminal according to the internal identifier and the external identifier included in the connection establishment request. And establishing a connection of the terminal according to the external identifier.
  • different external identifiers of the terminal correspond to different external identifiers.
  • the gateway unit is a packet data network gateway (P-GW) or a gateway general packet radio service support node (GGSN).
  • P-GW packet data network gateway
  • GGSN gateway general packet radio service support node
  • the serving gateway unit of the terminal receives the connection establishment request of the terminal, including: the machine type communication-interoperation function entity (MTC-IWF), after receiving the first trigger request sent by the MTC server and including the external identifier of the terminal, according to The external identifier queries the terminal information, and constructs a second trigger request, and sends the internal identifier corresponding to the external identifier and the external identifier corresponding to the external identifier to the serving core network node of the terminal by using the second trigger request;
  • MTC-IWF machine type communication-interoperation function entity
  • the serving core network node sends the external identifier parameter corresponding to the external identifier to the terminal according to the internal identifier, and the terminal sends the connection establishment request message to the serving gateway unit, where the connection establishment request is The internal identifier of the portable terminal and the external identification parameter corresponding to the external identifier.
  • the internal identifier corresponding to the internal identifier and the external identifier in the terminal information is sent to the serving core network node of the terminal by using the second triggering request, including:
  • the internal identifier of the terminal is used to replace the external identifier in the first trigger request, and the second trigger request includes the first trigger request and the external identifier corresponding to the external identifier, according to the service core included in the terminal information.
  • the network node identifier sends the second trigger request to the serving core network node of the terminal.
  • the serving core network node of the terminal is a service mobility management entity (MME) of the terminal;
  • the serving core network node sends the external identifier parameter corresponding to the external identifier to the terminal according to the internal identifier, the method includes: querying, by the serving MME, the status of the terminal according to the internal identifier of the terminal, if the terminal is in an idle state, Establishing a non-access stratum (NAS) connection with the terminal, and sending the second trigger request to the terminal by using NAS signaling; if the terminal is in the connected state, the second trigger request is directly sent to the terminal by using NAS signaling.
  • MME service mobility management entity
  • the serving core network node of the terminal is a service short message service center ( SMS-SC ) of the terminal;
  • SMS-SC service short message service center
  • the serving core network node sends the external identifier parameter corresponding to the external identifier to the terminal according to the internal identifier, including: the serving SMS-SC constructs and carries the second trigger request after receiving the second trigger request The short message, the short message is sent to the terminal.
  • the correspondence between the internal identifier of the storage terminal, the external identifier parameter and the external identifier includes:
  • the information about the internal identifier of the terminal, the correspondence between the external identifier and the external identifier is configured into a Home Subscriber Server (HSS) and/or an MTC Authentication, Authentication and Accounting Function Entity (MTC AAA).
  • HSS Home Subscriber Server
  • MTC AAA MTC Authentication, Authentication and Accounting Function Entity
  • the external identifier of the terminal is queried according to the internal identifier and the external identifier included in the connection establishment request, including:
  • the serving gateway unit of the terminal sends the internal identifier and the external identifier to the MTC AAA, and requests the external identifier of the terminal from the MTC AAA;
  • the MTC AAA stores the internal identifier of the terminal, the correspondence between the external identifier and the external identifier, the external identifier of the found terminal is returned to the serving gateway unit of the terminal;
  • the internal identifier the correspondence between the external identifier and the external identifier, the external identifier of the terminal is obtained from the HSS, and returned to the serving gateway unit of the terminal.
  • the information about the internal identifier of the storage terminal, the correspondence between the external identifier and the external identifier includes: a first trigger request of the external identifier corresponding to the identifier; After receiving the first trigger request, the serving gateway unit sends the external identifier and the external identifier to the MTC AAA to request an internal identifier of the terminal;
  • the MTC AAA stores the internal identifier of the local terminal, the correspondence relationship between the external identifier and the external identifier, and returns the internal identifier of the terminal to the serving gateway unit.
  • the serving gateway unit of the terminal receives the connection establishment request of the terminal, including: after receiving the internal identifier of the terminal from the MTC AAA, the serving gateway unit of the terminal replaces the first trigger with an internal identifier The external identifier in the request, constructing a data packet carrying the first trigger request, and sending the data packet to the terminal;
  • the terminal After receiving the data packet, the terminal sends the connection establishment request to the serving gateway unit, where the internal identification identifier of the terminal and the external identification parameter corresponding to the external identifier are carried in the connection establishment request.
  • a gateway unit comprising: a transceiver module, a query module, and a connection establishment module, where: the transceiver module is configured to: receive a connection establishment request of the terminal;
  • the query module is configured to: query an external identifier of the terminal according to the internal identifier and the external identifier included in the connection establishment request;
  • the connection establishing module is configured to: establish a connection of the terminal according to the external identifier.
  • different external identifiers of the terminal correspond to different external identifiers.
  • the gateway unit is a packet data network gateway (P-GW) or a gateway general packet radio service support node (GGSN).
  • P-GW packet data network gateway
  • GGSN gateway general packet radio service support node
  • the querying unit is specifically configured to send the internal identifier and the external identifier to the MTC AAA, and request the external identifier of the terminal from the MTC AAA.
  • the internal identifier of the storage terminal when the server triggers the terminal to establish a connection, the network can distinguish multiple external identifiers of the terminal, and avoid using the wrong external identifier.
  • the terminal triggers the request in response to the server, thereby ensuring the success of the connection establishment between the terminal and the server.
  • BRIEF abstract 1 is a schematic diagram of networking of a wireless communication network
  • Embodiment 1 is a flowchart of Embodiment 1 of a method for establishing a connection according to the present invention
  • Embodiment 3 is a flowchart of Embodiment 2 of a method for establishing a connection according to the present invention
  • Embodiment 4 is a flowchart of Embodiment 3 of a method for establishing a connection according to the present invention
  • FIG. 5 is a structural diagram of a gateway unit according to an embodiment of the present invention. Preferred embodiment of the invention
  • the terminal may use multiple external identifiers (EIDs). Multiple external identifiers may be used by one or more servers. When the server triggers the terminal to establish a connection with the server, it is used. External identification, and an internal identifier corresponding to multiple external identifiers in the network may cause the use of the wrong external identifier when the network responds to the server, causing the terminal of the error response server to trigger the request, so that the connection between the terminal and the server is failed.
  • a mechanism for distinguishing multiple external identifiers of the terminal is established, so that the network can correctly distinguish the external identifier of the terminal, and avoid the failure of the connection establishment between the terminal and the server.
  • the correspondence information of the internal identifier, the external identifier, and the external identifier of the terminal is stored in the HSS and/or the MTC AAA;
  • the external identification parameter can be information such as APN.
  • the correspondence between the internal identifier of the terminal and the external identifier and the external identifier may be configured by the operator when the terminal enters the network, or may be carried by the request message when the server sends a request to the network.
  • the request can be a trigger request from the terminal.
  • the network obtains the external identifier corresponding to the terminal from the HSS or MTC AAA through the internal identifier and the external identifier of the terminal, and establishes the connection of the terminal according to the external identifier.
  • Example 1 In this embodiment, the correspondence between the internal identifier, the external identifier, and the external identifier is configured by the operator, and the server triggers the terminal by using the NAS signaling. As shown in FIG. 2, the method for establishing the connection includes:
  • Step 201 When the terminal accesses the network, the operator configures the correspondence information between the internal identifier, the external identifier parameter and the external identifier for the terminal, and stores the subscription data as the terminal in the HSS;
  • the specific implementation may add an identifier to the storage information of the HSS to indicate a one-to-one mapping relationship between the internal identifier of the terminal, the external identifier, and the external identifier EID, such as "APN-EID relations".
  • Step 202 When the MTC application server needs to obtain real-time data from the terminal, send the first trigger request message to the MTC-IWF, where the request message includes the identifier of the terminal, the identifier of the application, and the address of the server, where the identifier of the terminal is a network.
  • External identification EID used externally;
  • Step 203 After receiving the first trigger request of the MTC server, the MTC-IWF requests the terminal information by using the user information request message, and the request message includes the EID of the terminal.
  • Step 204 After receiving the information request of the MTC-IWF, the HSS searches for the terminal information in the locally stored terminal subscription data according to the EID of the terminal, including the internal identifier IMSI of the terminal, the service CN node identifier, and the external identifier parameter corresponding to the EID. And sent to the MTC-IWF through a user information response message;
  • the serving CN of the terminal may be the serving MME or the serving SMS-SC of the terminal.
  • the serving CN node is used as the serving MME as an example for description.
  • Step 205 After obtaining the terminal information, the MTC-IWF uses the IMSI to replace the EID in the first trigger request, and constructs a second trigger request, where the second trigger request includes the first trigger request and the external identifier, and according to the service of the terminal.
  • the CN node identifies the serving MME that is sent to the terminal;
  • Step 206 After receiving the second trigger request sent by the MTC-IWF, the serving MME queries the local database according to the internal identifier of the terminal in the first trigger request included in the second trigger request to obtain the state of the terminal, and triggers the second trigger.
  • the request is encapsulated in the NAS signaling and sent to the terminal;
  • the serving MME When the terminal is in an idle state, the serving MME sends a paging message to the terminal. After receiving the paging message, the terminal sends a service request signaling to the serving MME to request to establish a NAS (non-access stratum) connection with the serving MME. After the NAS connection is established, the serving MME encapsulates the second trigger request received from the MTC-IWF in the NAS signaling Downlink NAS transport, that is, the second trigger. And sending an information element as the NAS signaling to the terminal;
  • the MME When the terminal is in the connected state, the MME directly encapsulates the second trigger request in the NAS signaling Downlink NAS transport and sends it to the terminal.
  • Step 207 After receiving the NAS signaling, the terminal reads the first trigger request included therein, and initiates a PDN connection establishment request to the serving P-GW, where the request message includes the internal identifier IMSI and the external identifier of the terminal.
  • the serving P-GW functions as a serving gateway unit.
  • the gateway unit may also be a serving gateway general packet radio service support node (GGSN).
  • GGSN serving gateway general packet radio service support node
  • Step 208 After receiving the PDN connection establishment request of the terminal, the serving P-GW reads the IMSI and the external identifier in the request message, and requests the external identifier EID of the terminal from the MTC AAA through the user identity request message, where the request message includes The IMSI and external identification parameters of the terminal;
  • Step 209 After receiving the identity request of the serving P-GW, the MTC AAA reads the IMSI and the external identifier in the request message, and internally stores the internal identifier, the external identifier, and the external identifier according to the IMSI and the external identifier of the terminal. Searching for the EID of the corresponding terminal in the correspondence information of the EID, and sending the EID to the serving P-GW through the user identity response message;
  • the MTC AAA does not have the terminal's valid identity information locally, the information is passed.
  • Step 210 After obtaining the identity of the terminal, the P-GW responds to the trigger request of the MTC application server according to the EID of the terminal, that is, establishes a connection between the terminal and the MTC application server.
  • the connection establishment method includes:
  • Steps 301 to 304 are the same as steps 201 to 204 in Embodiment 1; Step 305: After obtaining the terminal information, the MTC-IWF replaces the EID in the first trigger request by using the IMSI, and constructs a second trigger request, and according to the terminal. Service CN node identity is sent to the terminal Service SMS-SC;
  • Step 306 After receiving the second triggering request sent by the MTC-IWF, the serving SMS-SC constructs a short message carrying the second triggering message, that is, the second triggering message is used as an information element of the short message, and is sent to the terminal;
  • Step 307 After receiving the short message, the terminal reads the second trigger message included therein, and initiates a PDN connection establishment request to the serving P-GW, where the request message includes the internal identifier IMSI and the external identifier of the terminal.
  • Step 308 to Step 310 is the same as step 208 to step 210 in the first embodiment.
  • the connection establishment method includes:
  • the network When the terminal is powered on and attached to the network, or when the terminal initiates a PDN connection request, the network establishes a default PDN connection with the serving P-GW for the terminal to support the always-on function.
  • Step 401 When the MTC server needs to obtain real-time data from the terminal, send the first trigger request to the service P-GW of the terminal, where the first trigger request includes the identifier of the terminal, the identifier of the application, and the address of the server, and the external part of the terminal. Identify the corresponding external identifier parameter, and the identifier of the terminal is an external identifier EID used outside the network;
  • Step 402 After receiving the first trigger request of the MTC server, the P-GW requests the internal identifier IMSI of the terminal from the MTC AAA by using the user identity request message, where the request message includes the EID of the terminal and the EID parameter corresponding to the EID.
  • Step 403 After receiving the identity request of the serving P-GW, the MTC AAA reads the EID parameter and the EID of the terminal, and stores the correspondence information between the internal identifier of the terminal, the external identifier parameter, and the external identifier.
  • the specific implementation may add an identifier to the storage information of the MTC AAA to indicate a one-to-one mapping relationship between the internal identifier of the terminal, the external identifier parameter, and the external identifier EID, such as "APN-EID”. Relations".
  • the IMSI of the corresponding terminal is searched in the local information storage according to the EID of the terminal, and sent to the serving P-GW through the user identity response message.
  • the MTC AAA does not have the terminal's valid identity information locally, the information is passed.
  • Step 404 After obtaining the internal identifier of the terminal, the P-GW uses the IMSI to replace the EID in the first trigger request, constructs an IP data packet carrying the first trigger message, and sends the IP data packet to the terminal according to the IP address and port number of the terminal.
  • Step 405 After receiving the IP data packet sent by the serving P-GW, the terminal parses the first trigger request included therein, reads the external identifier parameter in the first trigger request, and initiates a PDN connection establishment request to the serving P-GW.
  • the request message includes the internal identifier IMSI and the external identifier of the terminal.
  • Step 406 After receiving the PDN connection establishment request of the terminal, the serving P-GW reads the IMSI and the external identifier in the request message, and requests the message through the user identity. Requesting, by the MTC AAA, an external identifier EID of the terminal, where the request message includes the IMSI and the external identifier of the terminal;
  • Step 407 After receiving the identity request of the serving P-GW, the MTC AAA reads the IMSI and the external identifier in the request message, and internally stores the internal identifier, the external identifier, and the external identifier according to the IMSI and the external identifier of the terminal. Finding the EID of the terminal in the correspondence information of the EID, and sending the EID to the service P-GW through the user identity response message;
  • Step 408 After obtaining the EID of the terminal, the P-GW responds to the trigger request of the MTC server according to the EID of the terminal, that is, establishes a connection between the terminal and the MTC application server.
  • the embodiment further provides a gateway unit, including: a transceiver module, a query module, and a connection establishment module, where:
  • a transceiver module configured to receive a connection establishment request of the terminal
  • the query module is configured to query an external identifier of the terminal according to the internal identifier and the external identifier included in the connection establishment request;
  • a connection establishment module is configured to establish a connection of the terminal according to the external identifier. Different external identifiers of the terminal correspond to different external identification parameters.
  • the gateway unit is a packet data network gateway (P-GW) or a gateway general packet radio service support node (GGSN).
  • the query unit is specifically configured to send the internal identifier and the external identifier to the MTC AAA, and request the external identifier of the terminal from the MTC AAA.
  • 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. Alternatively, they 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, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any particular combination of hardware and software.
  • the internal identifier of the storage terminal when the server triggers the terminal to establish a connection, the network can distinguish the multiple external identifiers of the terminal, and avoid using the wrong external identifier to respond to the server.
  • the terminal triggers the request to ensure the success of the connection between the terminal and the server.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé d'établissement de connexion et une unité de passerelle. Le procédé comprend : le stockage d'informations d'une correspondance entre un identifiant interne, un paramètre d'identifiant externe et un identifiant externe d'un terminal ; la réception, par une unité de passerelle de service du terminal, d'une requête d'établissement de connexion du terminal, la recherche de l'identifiant externe du terminal selon l'identifiant interne et le paramètre d'identifiant externe contenus dans la requête d'établissement de connexion et l'établissement d'une connexion du terminal selon l'identifiant externe. Dans la solution précédente, la correspondance entre l'identifiant interne, le paramètre d'identifiant externe et l'identifiant externe du terminal est stockée et, lorsque le serveur déclenche l'établissement d'une connexion par le terminal, le réseau est apte à distinguer une pluralité d'identifiants externes du terminal, de manière à éviter l'utilisation d'un identifiant externe erroné pour répondre à une requête de déclenchement de terminal provenant du serveur, assurant ainsi l'établissement réussi de la connexion entre le terminal et le serveur.
PCT/CN2012/075872 2012-04-11 2012-05-22 Procédé d'établissement de connexion et unité de passerelle WO2013152545A1 (fr)

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CN105338615B (zh) * 2014-08-12 2019-12-03 中兴通讯股份有限公司 用户设备的注册方法、实体及系统
CN109196889B (zh) * 2016-05-30 2020-08-14 华为技术有限公司 用户信息获取方法、标识对应关系保存方法及装置与设备
WO2018040096A1 (fr) * 2016-09-05 2018-03-08 华为技术有限公司 Procédé de traitement d'informations d'identification, système de commande de base de données et dispositifs associés

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