WO2013097194A1 - 一种业务触发方法、系统和设备 - Google Patents

一种业务触发方法、系统和设备 Download PDF

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Publication number
WO2013097194A1
WO2013097194A1 PCT/CN2011/085071 CN2011085071W WO2013097194A1 WO 2013097194 A1 WO2013097194 A1 WO 2013097194A1 CN 2011085071 W CN2011085071 W CN 2011085071W WO 2013097194 A1 WO2013097194 A1 WO 2013097194A1
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WO
WIPO (PCT)
Prior art keywords
gateway
terminal device
address
message
data packet
Prior art date
Application number
PCT/CN2011/085071
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English (en)
French (fr)
Inventor
周汉
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2011/085071 priority Critical patent/WO2013097194A1/zh
Priority to CN201180070133.0A priority patent/CN103477702B/zh
Publication of WO2013097194A1 publication Critical patent/WO2013097194A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/09Mapping addresses
    • H04L61/25Mapping addresses of the same type
    • H04L61/2503Translation of Internet protocol [IP] addresses
    • H04L61/256NAT traversal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/12Setup of transport tunnels

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a service triggering method, system, and device. Background technique
  • Machine to Machine ( ⁇ 2 ⁇ ) application refers to network communication between one or more network elements without human intervention, such as traffic control and management, factory monitoring, remote meter reading, etc. .
  • the application can be implemented based on a mobile network, and the terminal device can connect to the application server for data communication through the wireless evolution network.
  • the network triggers the terminal to initiate a service
  • the network side device for example, an application server, a platform device, or another management device
  • sends a trigger message to the terminal and after receiving the trigger message sent by the network, the terminal receives the trigger message sent by the network.
  • the terminal initiates a connection establishment process, for example, initiating a Packet Data Protocol (PDP) or a Packet Data Network (PDN) connection establishment process, and the terminal interacts with the network through the established connection.
  • PDP Packet Data Protocol
  • PDN Packet Data Network
  • the network triggers the terminal to initiate the service through the pull (Pull) form, which can realize unified management and effective control of the network to the terminal service.
  • a common deployment scenario is that multiple terminal devices access the mobile network through a GateWay User Equipment (GW UE). Only the gateway terminal device is visible to the mobile network, and the terminal device accessed through the gateway terminal device is invisible to the mobile network.
  • the address of the terminal device is a private network address assigned by the gateway terminal device.
  • the gateway terminal device has the function of network address translation (NAT), and the gateway terminal device uses the terminal device.
  • the private network address is mapped to a public network address that can be routed on the public network to interact with the application server.
  • the terminal After the terminal receives the trigger message of the network, the terminal always initiates the PDN connection establishment process.
  • the network if the network wants to trigger a terminal device under it, the network needs to send the trigger message to the network.
  • a GW UE associated with the terminal device The GW UE needs to parse the packet containing the trigger message and parse it to the application layer level to learn the specific terminal device triggered by the network, and then send the trigger message to the specific terminal device.
  • the gateway terminal If the device does not resolve the application level of the packet, the gateway terminal device cannot distinguish whether the data of the application layer in the received packet is a trigger message or normal data, and cannot send the trigger message to the corresponding terminal correctly. If the gateway terminal device parses all the data, the data forwarding efficiency is inefficient. Summary of the invention
  • the embodiment of the present invention provides a service triggering method, system, and device to solve the problem that the gateway terminal device needs to parse all the packets in the prior art to learn the trigger message and send the data to the terminal. .
  • the solution in the embodiment of the present invention can improve the efficiency of data forwarding of the gateway terminal device while implementing service triggering.
  • an embodiment of the present invention provides a service triggering method, including:
  • the gateway terminal device uses the PDP context or the PDN connection to receive the Internet Protocol IP data packet sent by the terminal triggering logic function module, and determines whether the IP data packet includes a trigger message, where the trigger message includes the terminal to be triggered by the network side device.
  • Application identifier ;
  • the gateway terminal device parses the IP data packet to obtain the application identifier in the trigger message.
  • the gateway terminal device Determining, by the gateway terminal device, the private network IP address of the terminal according to the application identifier, and sending the trigger message to the terminal by using the private network IP address, so that the terminal actively sends a message to the terminal according to the trigger message.
  • the network side device initiates a service connection.
  • an embodiment of the present invention further provides a service triggering method, including:
  • the terminal trigger logic function module receives a trigger message sent by the network side device, where the trigger message includes an application identifier of the terminal to be triggered by the network side device;
  • an embodiment of the present invention further provides a gateway terminal device, including:
  • a second receiving unit configured to receive, by using a PDP context or a PDN connection, an IP data packet sent by the terminal trigger logic function module;
  • a determining unit configured to determine whether a trigger message is included in the IP data packet, where the triggering The message includes the application identifier of the terminal to be triggered by the network side device;
  • a message processing unit configured to: when the judgment result is a trigger message, parse the IP data packet to obtain the application identifier in the trigger message, determine a private network IP address of the terminal according to the application identifier, and use the The private network IP address sends the trigger message to the terminal, so that the terminal initiates a service connection to the network side device according to the trigger message.
  • the embodiment of the present invention further provides a triggering device, where the triggering device includes: a first receiving unit, configured to receive a trigger message sent by a network side device, where the trigger message includes the network side device The application identifier of the terminal to be triggered;
  • An identifier mapping unit configured to determine, according to the application identifier, an internal identifier of a gateway terminal device corresponding to the application identifier,
  • a first sending unit configured to determine an IP address of the gateway terminal device according to the internal identifier, and send the IP data packet to a gateway by using an IP address of the gateway terminal device, so that the gateway uses the gateway terminal.
  • the PDP context or PDN connection corresponding to the IP address of the device sends the IP data packet to the gateway terminal device.
  • the embodiment of the present invention further provides a service triggering system, where the system includes: a network side device, a trigger device, a gateway, and a gateway terminal device;
  • the triggering device is configured to receive a trigger message sent by the network side device, and determine an internal identifier of the gateway terminal device corresponding to the application identifier according to an application identifier of the terminal in the trigger message, according to the internal identifier Determining an IP address of the gateway terminal device, and transmitting the IP data packet to a gateway by using an IP address of the gateway terminal device, so that the gateway sends by using a PDP context or a PDN connection corresponding to an IP address of the gateway terminal device The IP data packet is sent to the gateway terminal device;
  • the gateway terminal device is configured to receive the IP data packet by using the PDP context or the PDN connection, and determine whether the trigger message is included in the IP data packet, and when the determination result includes the trigger message, Parsing the IP data packet to obtain the application identifier, determining a private network IP address of the terminal according to the application identifier, and sending the trigger message to the terminal, so that the terminal actively sends a message to the terminal according to the trigger message.
  • the network side device initiates a service connection.
  • the gateway terminal device after receiving the IP data packet, the gateway terminal device first determines whether the IP data packet includes a trigger message, and when determining that the trigger message is included, parsing the IP data packet to obtain an application of the device to be triggered. Identification; this eliminates the need for all IP packets forwarded on the gateway terminal device All of them are parsed, that is, the trigger service can be implemented, and the forwarding efficiency of the gateway terminal device is improved.
  • FIG. 1 is a schematic flowchart of a service triggering method in an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a second specific process of the service triggering method in the embodiment of the present invention
  • FIG. 3 is a schematic diagram of a third specific process of the service triggering method in the embodiment of the present invention
  • FIG. 5 is a schematic diagram of a specific composition of a trigger device in an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a specific composition of a first sending unit in an embodiment of the present invention.
  • FIG. 7 is another schematic structural diagram of a trigger device in an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a specific composition of a gateway terminal device in an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a specific composition of a determining unit in an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of another specific composition of a gateway terminal device according to an embodiment of the present invention
  • FIG. 11 is a schematic diagram of a third specific composition of a gateway terminal device according to an embodiment of the present invention.
  • the embodiment of the present invention provides a service triggering method for the deficiencies in the prior art, and solves the problem that the GW UE must receive all data when the network triggers the terminal device under the existing GW UE deployment scenario.
  • the gateway terminal device determines whether the IP data packet includes a trigger message after receiving the IP data packet (for example, The initial judgment is made through the port or NAT mapping relationship. When the trigger message is included, the IP packet is parsed to avoid parsing all the data. The situation improves the efficiency of implementation with network triggering.
  • the method can also be applied to a scenario in which a network triggers a multi-application terminal; the present invention can be applied to the above M2M communication system (applied to an M2M terminal) or to a human to human (H2H) communication system (
  • the application scenario is not limited to the application scenario in the embodiment of the present invention.
  • the description of the application scenario is mainly for facilitating the understanding of the embodiment of the present invention.
  • FIG. 1 it is a specific process diagram of a service triggering method in an embodiment of the present invention, where the process includes the following steps:
  • the gateway terminal device uses the PDP context or the PDN connection to receive the IP data packet sent by the terminal trigger logic function module, and determines whether the IP data packet includes a trigger message, where the trigger message includes the terminal to be triggered by the network side device.
  • Application ID Specifically, in this step, the gateway terminal device may receive an IP data packet from the gateway by using a PDP context or a PDN connection, and the gateway receives the IP data packet sent by the terminal trigger logic function module and uses a PDP context or a PDN connection. Forward to the gateway terminal device.
  • determining whether the trigger message is included in the IP data packet may include:
  • the gateway terminal device detects whether the IP data packet uses a specific port number, and when the detection result is that a specific port number is used, determining that the IP data packet includes a trigger message; or
  • the gateway terminal device detects whether a NAT mapping relationship corresponding to the address of the IP data packet is stored locally, and when the detection result is that there is no NAT mapping relationship, the gateway terminal device parses the IP data packet, and according to the analysis result Determining whether there is a trigger message in the IP data packet.
  • the IP data packet uses a specific port number
  • a negotiation step is further included before the step: the gateway terminal device and the terminal trigger logic function module negotiate the specific port number.
  • the specific negotiation process may be: the gateway terminal device sends the specific port number in a protocol configuration item (PCO) cell encapsulated in a PDP activation request message or a PDN connection establishment request message, to the gateway, so that the gateway resolves The PDP activation request message or the PDN connection establishment request message obtains the specific port number, and sends the specific port number to the terminal trigger logic function module; or
  • PCO protocol configuration item
  • the PDP activation request message and the PDP activation response message are messages transmitted during the activation of the PDP context, and the PDN connection setup request message and the PDN connection setup response message are in the process of establishing the PDN connection.
  • the transmitted message is
  • the gateway terminal device parses the IP data packet to obtain the application identifier in the trigger message.
  • the gateway terminal device determines the private network IP address of the terminal according to the application identifier, and sends the trigger message to the terminal by using the private network IP address, so that the terminal actively takes the trigger message according to the trigger message. Initiating a service connection to the network side device.
  • the specific step of the terminal actively initiating a service connection to the network side device according to the triggering message may include: the terminal receiving the trigger message, and sending a data packet to the gateway terminal device; the gateway terminal device And establishing a NAT mapping relationship for the terminal according to the received data packet, and replacing the private network IP address in the data packet with a public network IP address in the NAT mapping relationship, and replacing the The data packet is sent to the network side device, and the NAT mapping relationship includes a mapping relationship between the private network IP address of the terminal and the public network IP address; and the network side device receives the replaced And obtaining, by the data packet, the public network IP address according to the replaced data packet, and sending downlink data to the terminal by using the public network IP address.
  • the method further includes: the terminal trigger logic function module receiving the trigger message sent by the network side device; the terminal trigger logic function module determining, according to the application identifier, a gateway terminal device corresponding to the application identifier An internal identifier, and determining an IP address of the gateway terminal device according to the internal identifier; the terminal trigger logic function module sends the IP data packet to a gateway by using an IP address of the gateway terminal device, so that the gateway uses A PDP context or PDN connection corresponding to the IP address transmits the IP data packet to the gateway terminal device.
  • the determining the IP address of the gateway terminal device according to the internal identifier may include: querying, according to the internal identifier of the gateway terminal device, whether an IP address of the gateway terminal device exists in the mapping relationship data, where The mapping relationship data stores the correspondence between the internal identifier of the gateway terminal device and the IP address;
  • the terminal trigger logic function module triggers the gateway terminal setting And activating the PDP context or establishing the PDN connection, and receiving an IP address of the terminal device that is sent by the gateway and corresponding to the PDP context or PDN connection.
  • the terminal trigger logic function module receives a trigger message sent by a network side device (for example, a service server), where the trigger message includes an application identifier of the terminal to be triggered by the network side device.
  • a network side device for example, a service server
  • the terminal trigger logic function module in the embodiment of the present invention may be a single functional entity (for example, a server that is deployed independently, a trigger device, etc.), or a function module of another network element;
  • the network side device may be a network push Server, Machine Type Communication (MTC) server or other application server;
  • the application identifier of the above terminal may be: International Mobile Subscriber Identification Number (IMSI), public telephone network exchange Mobile Subscriber International ISDN/PSTN number (MSISDN), Fully Qualified Domain Name (FQDN), Universal Resource Identifier (URI), Integration
  • IMSI International Mobile Subscriber Identification Number
  • MSISDN Mobile Subscriber International ISDN/PSTN number
  • FQDN Fully Qualified Domain Name
  • URI Universal Resource Identifier
  • Integration such as an Integrate circuit card identity (ICCID) may also be referred to as an external identifier of the terminal.
  • the terminal trigger logic function module determines, according to the application identifier of the terminal in the trigger message, an internal identifier of the gateway terminal device corresponding to the application identifier.
  • the internal identity of the gateway terminal device generally refers to the internal identity used between the network and the gateway terminal device, as in the 3rd Generation Partnership Project.
  • IMSI The 3rd Generation Partnership Project, 3GPP
  • 3GPP 3rd Generation Partnership Project
  • the specific process may be: after receiving the trigger message, the terminal trigger logic function module obtains the application identifier of the terminal in the trigger message, and the terminal trigger logic function module queries the corresponding database according to the terminal application identifier (the terminal application identifier and the gateway are stored in the database) Corresponding relationship of the internal identifier of the terminal device) obtaining the internal identifier of the gateway terminal device corresponding to the identifier of the terminal application.
  • the database can be a Home Subscriber Server (HSS) or other database, or it can be a database module integrated in the terminal trigger logic function module.
  • HSS Home Subscriber Server
  • the terminal trigger logic function module determines an IP address of the gateway terminal device according to the internal identifier, and sends the IP data packet to the gateway according to the IP address of the gateway terminal device, so that the gateway uses the IP address.
  • the PDP context or PDN connection corresponding to the address sends the IP data packet to The gateway terminal device.
  • the determining the IP address of the gateway terminal device according to the internal identifier may be: querying, according to the internal identifier of the gateway terminal device, whether the IP address of the gateway terminal device exists in the mapping relationship data, where The mapping relationship data stores a correspondence between an internal identifier of the gateway terminal device and an IP address;
  • the terminal triggering logic function module triggers the gateway terminal device to establish through the gateway
  • the PDP context or the PDN connection receives an IP address of the terminal device corresponding to the PDP context or PDN connection sent by the gateway.
  • the specific port number may be negotiated before step 203 for the specific port number to be known between the gateway terminal device and the terminal trigger logic function module. Then, in step 203, the terminal trigger logic function module encapsulates the trigger message in an IP data packet using a specific port number and sends the trigger message to the gateway terminal device corresponding to the internal identifier.
  • the above method may further include: the terminal triggering logic function module and the gateway terminal device negotiating a specific port number used by the IP data packet.
  • the terminal trigger logic function module receives the specific port number from the gateway, where the specific port number is encapsulated by the gateway terminal device in a PDP activation request message or a PDN connection establishment request.
  • the protocol configuration item PCO in the message is sent to the gateway, where the PDP activation request message is a message transmitted during the activation of the PDP context, and the PDN connection establishment request message is in the process of establishing the PDN connection. Transmitted message; or,
  • the gateway Transmitting, by the terminal triggering logic function module, the specific port number to the gateway, so that the gateway sends the specific port number to a PCO cell in a PDP activation response message or a PDN connection establishment response message, and sends the specific port number to the gateway.
  • the terminal device where the PDP activation response message is a message transmitted during the activation of the PDP context, and the PDN connection establishment response message is a message transmitted during the establishment of the PDN connection.
  • the PDP activation request message and the PDP activation response message are messages transmitted during the activation of the PDP context, and the PDN connection establishment request message and the PDN connection establishment response message may be transmitted during the establishment of the PDN connection. Message.
  • the gateway terminal device encapsulates the specific port number in the PDN during the process of establishing a PDN connection.
  • the PCO cell in the connection setup request message is sent to the gateway (eg, GGSN or PGW), and after the gateway resolves to obtain the specific port number, the specific port number is sent to the terminal to trigger the logic function module.
  • the gateway eg, GGSN or PGW
  • the terminal triggering logic function module sends the specific port number to the gateway (for example, a gateway GPRS support node (the Gateway includes the specific port number by the gateway after the Gateway GPRS Support)
  • the PCO cell is sent to the gateway terminal device (eg, the specific port number is included in the PCO cell by the GGSN or PGW and sent to the gateway terminal device through the SGSN or MME).
  • negotiation modes may also be adopted, such as configuring the specific port number on the terminal trigger logic function module and the gateway terminal device by other devices in the network.
  • the following describes the process shown in FIG. 3, where the network side device in this example is an MTC server.
  • the MTC server sends a trigger request message to the terminal triggering logic function module, where the trigger request message carries the application identifier of the terminal.
  • the terminal trigger logic module After the terminal trigger logic module obtains the application identifier of the terminal, the terminal trigger logic module obtains an internal identifier (eg, IMSI) of the gateway terminal device according to the application identifier of the terminal, and queries the gateway terminal device according to the internal identifier of the gateway terminal device. The validity of the IP address (ie whether there is a suitable PDN connection).
  • IMSI internal identifier
  • the terminal triggering logic function module sends a trigger message to the gateway terminal device through the PDP or PDN connection; the terminal triggers the logic function.
  • the module can encapsulate the trigger message in an IP packet by using a special port number and send it to the gateway terminal device.
  • the terminal trigger logic function module first triggers the gateway terminal device to initiate a PDP context activation or PDN connection establishment process, for example, the terminal triggers the logic function module to send a short message. Or other messages trigger the gateway terminal device to initiate a PDP context activation or PDN connection establishment procedure, and perform the corresponding steps in the manner described in step 203.
  • the gateway terminal device After the gateway terminal device receives the IP data packet that includes the trigger message, the gateway terminal device detects that the local network address translation NAT mapping relationship data is not stored in the NAT corresponding to the IP data packet. Mapping, the gateway device parses the IP data packet to obtain a trigger message included therein; or, the gateway terminal device learns that the IP data packet includes a trigger message according to the special port number, and the gateway terminal device parses the IP data. The message gets the trigger message contained in it. Then, the gateway terminal device obtains the private network IP address of the terminal device according to the terminal application identifier in the trigger message, and sends the trigger message to the corresponding terminal device;
  • the terminal device After the terminal device receives the trigger message, the terminal device initiates an application layer service connection to the server.
  • the service connection application data sent by the terminal device passes through the gateway terminal device; the NAT function module on the gateway terminal device establishes a mapping relationship between the private network address and the public network address for the terminal device.
  • the NAT function module on the gateway terminal device establishes a mapping relationship between the private network address and the public network address, and then the gateway terminal device The source address of the data packet is replaced with a public network address after the NAT mapping, and then the data packet is sent to the server according to the public network address. Thereafter, the server obtains a public network address that the terminal device can route. .
  • the gateway terminal device does not need to perform application layer resolution on all messages, but adopts certain judgment principles, such as a specific port number or a NAT mapping relationship according to an IP data packet. Determining whether the IP packet includes a trigger message, and determining that the IP packet that does not include the trigger message is not parsed by the application layer, so that the IP data packet that needs to be parsed by the gateway terminal device side can be greatly reduced, and the gateway terminal device is mitigated.
  • the gateway terminal device needs to parse all received IP data packets from the network to know whether the IP data packet includes a trigger message, and then perform subsequent processing according to the processing flow of the trigger message. It can be seen that the solution in the embodiment of the present invention greatly reduces the workload of the gateway terminal device.
  • the embodiment of the present invention further provides a service triggering system.
  • the system includes a network side device 1, a triggering device 2, a gateway 4, and a gateway terminal device 3, wherein the triggering device 2 is used for Receiving a trigger message sent by the network side device, determining an internal identifier of the gateway terminal device corresponding to the application identifier according to an application identifier of the terminal in the trigger message, and determining, according to the internal identifier, the gateway terminal device An IP address, using the IP address of the gateway terminal device to send the IP data packet to a gateway, so that the gateway sends the IP data packet to a PDP context or a PDN connection corresponding to an IP address of the gateway terminal device a gateway terminal device 3, configured to receive the IP data packet by using the PDP context or the PDN connection, to determine whether the trigger message is included in the IP data packet, and when the determination result is When the message is triggered, parse the The IP data packet obtains the application identifier, determines the private
  • the determining whether the triggering message is included in the IP data packet may include: detecting whether the IP data packet uses a specific port number, and determining, when the detection result is that a specific port number is used, determining the IP data packet. Include a trigger message; or, detect whether a network address translation NAT mapping relationship corresponding to the address of the IP data packet is stored locally, and when the detection result is that there is no NAT mapping relationship, the gateway terminal device parses the IP data packet And determining, according to the parsing result, whether a trigger message exists in the IP data packet.
  • Determining, according to the internal identifier, the IP address of the gateway terminal device may include: querying, according to the internal identifier of the gateway terminal device, whether the mapping relationship data corresponds to the PDP context or the PDN connection An IP address of the gateway terminal device, where the mapping relationship data stores a correspondence between an internal identifier of the gateway terminal device and an IP address; and when the query result is present, acquiring the gateway terminal device in the mapping relationship data
  • the IP address of the PDP context or the PDN connection sent by the gateway is triggered by the gateway to trigger the gateway terminal device to establish the PDP context or the PDN connection.
  • the IP address of the terminal device may include: querying, according to the internal identifier of the gateway terminal device, whether the mapping relationship data corresponds to the PDP context or the PDN connection An IP address of the gateway terminal device, where the mapping relationship data stores a correspondence between an internal identifier of the gateway terminal device and an IP address; and when the query result is present, acquiring the gateway terminal device in the mapping relationship data
  • the first receiving unit 20 is configured to receive a trigger message sent by the network side device, where the trigger message includes an application identifier of the terminal to be triggered by the network side device, and an identifier mapping unit 22, configured to use the application according to the application.
  • the first sending unit 24 configured to determine an IP address of the gateway terminal device according to the internal identifier, and send the gateway to the gateway by using an IP address of the gateway terminal device
  • the IP data packet is described, so that the gateway sends the IP data packet to the gateway terminal device by using a PDP context or a PDN connection corresponding to the IP address of the gateway terminal device.
  • the first sending unit 24 may include: an address query subunit 240, configured to query, according to an internal identifier of the gateway terminal device, whether mapping relationship data corresponds to the PDP context or the PDN connection An IP address of the gateway terminal device, where the mapping relationship data stores a correspondence between an internal identifier of the gateway terminal device and an IP address; the address obtaining subunit 242 is configured to acquire the Mapping the IP of the gateway terminal device in the relationship data Addressing; or, when the query result is not present, triggering, by the gateway, the gateway terminal device to establish the PDP context or the PDN connection, and receiving the terminal corresponding to the PDP context or PDN connection sent by the gateway IP address of the device.
  • an address query subunit 240 configured to query, according to an internal identifier of the gateway terminal device, whether mapping relationship data corresponds to the PDP context or the PDN connection
  • An IP address of the gateway terminal device where the mapping relationship data stores a correspondence between an internal identifier of the gateway terminal device and an IP address
  • the foregoing IP data packet may use a specific port number.
  • the triggering device 2 may further include a first negotiating unit 26, configured to negotiate the IP data with the gateway terminal device 3.
  • the specific port number used by the package may be used by the package.
  • the first negotiating unit 26 is configured to: receive the specific port number from the gateway, where the specific port number is encapsulated by the gateway terminal device in a PDP activation request message or a PDN connection establishment request message.
  • the configuration item PCO cell is sent to the gateway, where the PDP activation request message is a message transmitted during the activation of the PDP context, and the PDN connection establishment request message is a message transmitted during the establishment of the PDN connection;
  • the gateway Transmitting the specific port number to the gateway, so that the gateway sends the specific port number to the gateway terminal device in a PCO cell that is encapsulated in a PDP activation response message or a PDN connection setup response message, where
  • the PDP activation response message is a message transmitted during the activation of the PDP context
  • the PDN connection setup response message is a message transmitted during the establishment of the PDN connection.
  • FIG. 8 it is a schematic diagram of a specific composition of the gateway terminal device 3 in the embodiment of the present invention. It may include: a second receiving unit 30, configured to receive, by using a PDP context or a PDN connection, an IP data packet sent by the terminal triggering logic function module, where the determining unit 32 is configured to determine whether the triggering message is included in the IP data packet, where The triggering message includes an application identifier of the terminal to be triggered by the network side device.
  • the message processing unit 34 is configured to: when the determination result includes the triggering message, parse the IP data packet to obtain the application identifier in the trigger message.
  • the trigger logic function module may specifically be the foregoing trigger device.
  • the determining unit 32 may include: a port number determining sub-unit 320, configured to detect whether the IP data packet uses a specific port number, and determine the IP when the detection result is that a specific port number is used.
  • the data packet includes a trigger message; or includes a mapping relationship determining sub-unit 322, configured to detect whether a NAT mapping relationship corresponding to the address of the IP data packet is stored locally, and when the detection result is that there is no NAT mapping relationship, the analysis station Describe an IP data packet, and determine, according to the analysis result, whether a trigger message exists in the IP data packet.
  • the gateway terminal device 3 may further include a second negotiating unit 31 for negotiating a specific port number used by the IP data packet with the terminal triggering logic function module.
  • the second negotiating unit 31 is configured to send the specific port number to a gateway in a protocol configuration item PCO cell encapsulated in a PDP activation request message or a PDN connection establishment request message, so that the gateway parses the PDP.
  • the activation request message or the PDN connection establishment request message obtains the specific port number, and sends the specific port number to the terminal trigger logic function module; or
  • the PDT activation request message and the PDP activation response message are messages transmitted during the activation of the PDP context, and the PDN connection establishment request message and the PDN activation request message are sent to the gateway.
  • the PDN connection setup response message is a message transmitted during the establishment of the PDN connection.
  • the gateway terminal device 3 may further include: a service data receiving unit 33, configured to receive a data message sent by the terminal after receiving the trigger message, and a mapping establishing unit 35, configured to The data packet is a NAT mapping relationship established by the terminal in the local NAT mapping relationship data, and the private network IP address in the data packet is replaced with the public network IP address in the NAT mapping relationship, The replaced data packet is sent to the network side device, and the NAT mapping relationship includes a mapping relationship between the private network IP address of the terminal and the public network IP address; The public network IP address sends downlink data to the terminal.
  • the mapping relationship established by the mapping establishing unit 35 can be used by the determining unit 32 to determine whether there is a NAT mapping relationship corresponding to the address of the IP packet.
  • the gateway terminal device after receiving the IP data packet, the gateway terminal device first determines whether the IP data packet includes a trigger message, and when determining that the trigger message is included, parsing the IP data packet to obtain an application of the device to be triggered. In this way, it is not necessary to parse all the IP data packets forwarded on the gateway terminal device, that is, the trigger service can be implemented, and the forwarding efficiency of the gateway terminal device is improved.
  • the machine can be read into a storage medium, and when executed, the program can include the flow of an embodiment of the methods as described above.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

本发明实施例公开了一种业务触发方法、系统和设备,所述方法包括:网关终端设备使用PDP上下文或PDN连接接收终端触发逻辑功能模块发送的互连网协议IP数据包,判断所述IP数据包中是否包括触发消息,其中,所述触发消息中包括网络侧设备要触发的终端的应用标识;当判断结果为包括触发消息时,所述网关终端设备解析所述IP数据包获得所述触发消息中的所述应用标识;所述网关终端设备根据所述应用标识确定所述终端的私网IP地址,使用所述私网IP地址将所述触发消息发送给所述终端,以便所述终端根据所述触发消息主动向所述网络侧设备发起业务连接。采用本发明,可以在实现业务触发的同时,提高GW UE数据转发的效率。

Description

一种业务触发方法、 系统和设备 技术领域
本发明涉及无线通讯领域, 尤其涉及一种业务触发方法、 系统和设备。 背景技术
机器到机器( Machine to Machine , Μ2Μ )应用指的是一个或者多个网元之 间在不需要人为参与的情况下进行的网络通讯, 如, 交通控制与管理、 工厂监 控、 远程抄表等应用。 Μ2Μ应用可以基于移动网络实现, Μ2Μ的终端设备可 以通过无线演进网络连接到应用服务器进行数据通信。
目前在 Μ2Μ应用中,存在网络触发终端发起业务的场景,即网络侧设备(例 如: 应用服务器、 平台设备或者其他管理设备) 向终端发送一个触发消息, 终 端收到所述网络发送的触发消息后, 终端将发起连接建立的流程, 例如, 发起 分组数据协议 (Package Data Protocol , PDP ) 或公用数据网 (Packet Data Network, PDN )连接建立流程, 终端同网络再通过建立的连接进行业务交互。 网络通过这种拉(Pull )的形式触发终端发起业务, 可以实现网络对终端业务发 起的统一管理, 有效控制。
另夕卜, 在 M2M中, 一种普遍的部署场景是多个终端设备通过一个网关终端 设备 ( GateWay User Equipment, GW UE )接入到移动网络。 只有网关终端设备 对移动网络可见, 通过网关终端设备接入的终端设备对移动网络来说不可见。 终端设备的地址是由网关终端设备分配的私网地址, 终端设备通过网关终端设 备接入移动网络时, 网关终端设备具有网络地址转换 (Network Address Translation, NAT ) 的功能, 网关终端设备将终端设备的私网地址映射为可以在 公网路由的公网地址, 从而和应用服务器交互。
如上所述, 终端收到网络的触发消息之后, 终端总是发起 PDN连接建立流 程; 而在 GW UE部署的场景下, 如果网络希望触发其下的一个终端设备, 网络 需要把触发消息先发送到与所述终端设备相关联的 GW UE。 GW UE需要对包 含有触发消息的报文进行解析, 并解析到应用层程度, 才能获知网络触发的具 体的终端设备, 进而将所述触发消息发送给具体的终端设备。
在实现上述这种采用 Pull的形式触发终端发起业务的场景下, 若网关终端 设备不对报文进行应用层程度的解析, 则网关终端设备无法区分收到的报文中 应用层的数据是触发消息还是普通的数据, 无法正确的将触发消息发给相应的 终端。 如果令网关终端设备解析全部的数据, 则又会造成数据转发的效率低下。 发明内容
本发明实施例通过提供一种业务触发方法、 系统和设备, 以解决现有技术 中网关终端设备需要对所有报文进行解析才能获知触发消息并发送给终端所带 来的数据转发效率低的问题。 本发明实施例中的方案可以在实现业务触发的同 时, 提高网关终端设备数据转发的效率。
为了解决上述技术问题, 一方面, 本发明实施例提供了一种业务触发方法, 包括:
网关终端设备使用 PDP上下文或 PDN连接接收终端触发逻辑功能模块发送 的互连网协议 IP数据包, 判断所述 IP数据包中是否包括触发消息, 其中, 所述 触发消息中包括网络侧设备要触发的终端的应用标识;
当判断结果为包括触发消息时, 所述网关终端设备解析所述 IP数据包获得 所述触发消息中的所述应用标识;
所述网关终端设备根据所述应用标识确定所述终端的私网 IP地址, 使用所 述私网 IP地址将所述触发消息发送给所述终端, 以便所述终端根据所述触发消 息主动向所述网络侧设备发起业务连接。
另一方面, 本发明实施例还提供了一种业务触发方法, 包括:
终端触发逻辑功能模块接收网络侧设备发送的触发消息, 其中, 所述触发 消息中包括所述网络侧设备要触发的终端的应用标识;
根据所述内部标识确定所述网关终端设备的 IP地址;
根据所述网关终端设备的 IP地址向网关发送所述 IP数据包,以便所述网关 使用与所述 IP地址对应的 PDP上下文或 PDN连接将所述 IP数据包发送至所述 网关终端设备。
另一方面, 本发明实施例还提供了一种网关终端设备, 包括:
第二接收单元,用于使用 PDP上下文或 PDN连接接收终端触发逻辑功能模 块发送的 IP数据包;
判断单元, 用于判断所述 IP数据包中是否包括触发消息, 其中, 所述触发 消息中包括网络侧设备要触发的终端的应用标识;
消息处理单元, 用于当判断结果为包括触发消息时, 解析所述 IP数据包获 得所述触发消息中的所述应用标识, 根据所述应用标识确定所述终端的私网 IP 地址, 使用所述私网 IP地址将所述触发消息发送给所述终端, 以便所述终端根 据所述触发消息主动向所述网络侧设备发起业务连接。
另一方面, 本发明实施例还提供了一种触发装置, 该触发装置包括: 第一接收单元, 用于接收网络侧设备发送的触发消息, 其中, 所述触发消 息中包括所述网络侧设备要触发的终端的应用标识;
标识映射单元, 用于根据所述应用标识确定所述应用标识对应的网关终端 设备的内部标识,
第一发送单元, 用于根据所述内部标识确定所述网关终端设备的 IP地址, 使用所述网关终端设备的 IP地址向网关发送所述 IP数据包,以便所述网关使用 与所述网关终端设备的 IP地址对应的 PDP上下文或 PDN连接发送所述 IP数据 包给所述网关终端设备。
另一方面, 本发明实施例还提供了一种业务触发系统, 所述系统包括: 网 络侧设备, 触发装置, 网关, 和网关终端设备;
所述触发装置, 用于接收所述网络侧设备发送的触发消息, 根据所述触发 消息中的终端的应用标识确定所述应用标识对应的所述网关终端设备的内部标 识, 根据所述内部标识确定所述网关终端设备的 IP地址, 使用所述网关终端设 备的 IP地址向网关发送所述 IP数据包,以便所述网关使用与所述网关终端设备 的 IP地址对应的 PDP上下文或 PDN连接发送所述 IP数据包给所述网关终端设 备;
所述网关终端设备, 用于使用所述 PDP上下文或所述 PDN连接接收所述 IP数据包, 判断所述 IP数据包中是否包括所述触发消息, 当判断结果为包括所 述触发消息时, 解析所述 IP数据包获得所述应用标识, 根据所述应用标识确定 所述终端的私网 IP地址, 将所述触发消息发送给所述终端, 以便所述终端根据 所述触发消息主动向所述网络侧设备发起业务连接。
在本发明实施例中, 网关终端设备在接收 IP数据包后, 先判断 IP数据包中 是否包括触发消息, 当判断包括触发消息时, 再对该 IP数据包进行解析获得要 触发的设备的应用标识; 这样就不需要对网关终端设备上转发的所有 IP数据包 都进行解析, 即可以实现触发业务, 提高了网关终端设备的转发效率。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施 例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述 中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付 出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1是本发明实施例中的业务触发方法的一个具体流程示意图;
图 2是本发明实施例中的业务触发方法的第二个具体流程示意图; 图 3是本发明实施例中的业务触发方法的第三个具体流程示意图; 图 4是本发明实施例中的业务触发系统的一个具体组成示意图;
图 5是本发明实施例中的触发装置的一个具体组成示意图;
图 6是本发明实施例中的第一发送单元的一个具体组成示意图;
图 7是本发明实施例中的触发装置的另一个具体组成示意图;
图 8是本发明实施例中的网关终端设备的一个具体组成示意图;
图 9是本发明实施例中的判断单元的一个具体组成示意图;
图 10是本发明实施例中的网关终端设备的另一个具体组成示意图; 图 11是本发明实施例中的网关终端设备的第三个具体组成示意图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行清 楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是 全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作出创造 性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
本发明实施例针对现有技术中的不足, 提出一种业务触发的方法, 解决了 在现有的 GW UE部署的场景下, 网络触发其下的终端设备时, GW UE必须对 接收的所有数据都进行解析才能区分收到的数据是触发消息还是普通应用数据 的问题; 在本发明实施例中, 网关终端设备在接收 IP数据包后, 先判断该 IP数 据包中是否包括触发消息 (如, 通过端口或 NAT映射关系来进行初步判断) , 当判断包括触发消息时, 才对该 IP数据包进行解析, 避免对所有数据进行解析 的情况, 提高了具有网络触发功能时的实现效率。
同样, 本方法还可以应用于网络触发多应用终端的场景; 本发明既可以应 用于上述 M2M通信系统(应用于 M2M终端 ) , 也可以应用于人对人( Human to Human, H2H )通信系统(应用于普通的用户终端 ) , 本发明实施例中并不对 应用场景进行限制, 对应用场景的描述主要是为了便于对本发明实施例的理解。
如图 1 所示, 为本发明实施例中的业务触发方法的一个具体流程示意图, 该流程包括如下步骤:
101、 网关终端设备使用 PDP上下文或 PDN连接接收终端触发逻辑功能模 块发送的 IP数据包, 判断所述 IP数据包中是否包括触发消息, 其中, 所述触发 消息中包括网络侧设备要触发的终端的应用标识。 具体的, 在本步骤中, 网关 终端设备可使用 PDP上下文或 PDN连接接收来自网关的 IP数据包, 该网关接 收所述终端触发逻辑功能模块发送的所述 IP数据包并使用 PDP上下文或 PDN 连接向网关终端设备进行转发。
在本步骤中, 判断所述 IP数据包中是否包括触发消息可包括:
所述网关终端设备检测所述 IP数据包是否使用特定端口号, 当检测结果为 使用了特定端口号时, 确定所述 IP数据包中包括触发消息; 或,
所述网关终端设备检测本地是否存储有所述 IP数据包的地址对应的 NAT映 射关系, 当检测结果为不存在 NAT映射关系时, 所述网关终端设备解析所述 IP 数据包, 并根据解析结果判断所述 IP数据包中是否存在触发消息。
若在具体实施例中, IP数据包使用特定端口号, 则在本步骤之前还包括一 协商步骤: 所述网关终端设备和所述终端触发逻辑功能模块协商所述特定端口 号。
具体的协商过程可以是: 所述网关终端设备将所述特定端口号封装在 PDP 激活请求消息或 PDN连接建立请求消息中的协议配置项 (PCO )信元中发送到 网关,以便所述网关解析所述 PDP激活请求消息或所述 PDN连接建立请求消息 获得所述特定端口号, 将所述特定端口号发送给所述终端触发逻辑功能模块; 或者,
所述网关终端设备接收网关发送的 PDP激活响应消息或 PDN连接建立响应 消息 , 从所述 PDP激活响应消息或所述 PDN连接建立响应消息的 PCO信元中 提取所述特定端口号, 其中, 所述特定端口号由所述终端触发逻辑功能模块发 送给所述网关;
其中, 所述 PDP激活请求消息和所述 PDP激活响应消息为激活所述 PDP 上下文过程中传输的消息, 所述 PDN连接建立请求消息和所述 PDN连接建立 响应消息为建立所述 PDN连接过程中传输的消息。
102、 当判断结果为包括触发消息时,所述网关终端设备解析所述 IP数据包 获得所述触发消息中的所述应用标识。
103、所述网关终端设备根据所述应用标识确定所述终端的私网 IP地址,使 用所述私网 IP地址将所述触发消息发送给所述终端, 以便所述终端根据所述触 发消息主动向所述网络侧设备发起业务连接。
该终端根据所述触发消息主动向所述网络侧设备发起业务连接的具体步骤 可包括: 所述终端收到所述触发消息, 将数据报文发送到所述网关终端设备; 所述网关终端设备根据接收的所述数据报文为所述终端建立 NAT映射关系, 将 所述数据报文中的所述私网 IP地址替换为所述 NAT映射关系中的公网 IP地址, 将所述替换后的数据报文发送给所述网络侧设备, 所述 NAT映射关系包括所述 终端的所述私网 IP地址和所述公网 IP地址的映射关系;所述网络侧设备接收所 述替换后的数据报文, 根据所述替换后的数据报文获得所述公网 IP地址, 通过 所述公网 IP地址向所述终端发送下行数据。
在步骤 101 之前还可包括: 所述终端触发逻辑功能模块接收所述网络侧设 备发送的所述触发消息; 所述终端触发逻辑功能模块根据所述应用标识确定所 述应用标识对应的网关终端设备的内部标识, 并根据所述内部标识确定所述网 关终端设备的 IP地址; 所述终端触发逻辑功能模块使用所述网关终端设备的 IP 地址向网关发送所述 IP数据包, 以便所述网关使用与所述 IP地址对应的 PDP 上下文或 PDN连接将所述 IP数据包发送至所述网关终端设备。
其中, 根据所述内部标识确定所述网关终端设备的 IP地址可包括: 根据所述网关终端设备的内部标识查询在所述映射关系数据中是否存在所 述网关终端设备的 IP地址, 其中, 所述映射关系数据中存储有网关终端设备的 内部标识和 IP地址的对应关系;
当查询结果为存在时, 获取所述映射关系数据中的与所述 PDP上下文或所 述 PDN连接对应的所述网关终端设备的 IP地址; 或者,
当查询结果为不存在时, 所述终端触发逻辑功能模块触发所述网关终端设 备激活所述 PDP上下文或建立所述 PDN连接,接收所述网关发送的与所述 PDP 上下文或 PDN连接对应的所述终端设备的 IP地址。
为进一步说明本发明实施例中的业务触发方法, 以下则从终端触发逻辑功 能模块侧具体进行描述。 如图 2所示, 包括如下步骤:
201、 终端触发逻辑功能模块接收网络侧设备(如, 业务服务器)发送的触 发消息, 所述触发消息中包括所述网络侧设备要触发的终端的应用标识。
本发明实施例中的终端触发逻辑功能模块可以是一个单独的功能实体(如, 独立部署的服务器, 触发装置等), 或者作为一个其他网元的一个功能模块; 该 网络侧设备可以是网络推送服务器、 机器类型通讯 ( Machine Type Communication, MTC )服务器或其他应用服务器; 所上述的终端的应用标识可 以是, 国际移动用户识另' J码 ( International Mobile Subscriber Identification Number, IMSI ), 公共电话网交换网络编号计划中唯一能识别移动用户的号码 ( Mobile Subscriber International ISDN/PSTN number, MSISDN ), 完全合格 i或名 (Fully Qualified Domain Name, FQDN), 通用资源标志符 ( Universal Resource Identifier, URI ), 集成电路卡识别码( Integrate circuit card identity, ICCID )等标 识, 也可以称其为终端的外部标识。
202、 终端触发逻辑功能模块根据所述触发消息中的终端的应用标识确定所 述应用标识对应的网关终端设备的内部标识。 该网关终端设备的内部标识一般 是指在网络和网关终端设备之间使用的内部标识, 如在第三代合作伙伴计划
( The 3rd Generation Partnership Project, 3 GPP ) 网络和网关终端设备之间使用 的内部标识: IMSI等。
具体过程可以是, 终端触发逻辑功能模块收到触发消息后, 获得触发消息 中的终端的应用标识, 终端触发逻辑功能模块根据终端应用标识查询相应的数 据库(该数据库中存储了终端应用标识和网关终端设备内部标识的对应关系 ) 获得与所述终端应用标识对应的网关终端设备内部标识。 该数据库可以是归属 用户服务器(Home Subscriber Server, HSS )或其他数据库, 也可以是集成在终 端触发逻辑功能模块中的一个数据库模块。
203、终端触发逻辑功能模块根据所述内部标识确定所述网关终端设备的 IP 地址, 再根据所述网关终端设备的 IP地址向网关发送所述 IP数据包, 以便所述 网关使用与所述 IP地址对应的 PDP上下文或 PDN连接将所述 IP数据包发送至 所述网关终端设备。
其中, 上述的根据所述内部标识确定所述网关终端设备的 IP地址, 具体可 以是: 根据所述网关终端设备的内部标识查询映射关系数据中是否存在所述网 关终端设备的 IP地址, 其中, 所述映射关系数据中存储有网关终端设备的内部 标识和 IP地址的对应关系;
当查询结果为存在时, 获取所述映射关系数据中的所述网关终端设备的 IP 地址; 或者, 当查询结果为不存在时, 所述终端触发逻辑功能模块通过网关触 发所述网关终端设备建立所述 PDP上下文或所述 PDN连接,接收所述网关发送 的与所述 PDP上下文或 PDN连接对应的所述终端设备的 IP地址。
进一步的, 若发送的 IP数据包使用特定端口号, 为了网关终端设备和终端 触发逻辑功能模块二者之间可以知道该特定端口号, 可以在步骤 203之前进行 特定端口号的协商。 然后在步骤 203 中, 相应的, 终端触发逻辑功能模块将所 述触发消息封装在使用特定端口号的 IP数据包中发送给所述内部标识对应的网 关终端设备。
即上述方法可以进一步包括: 所述终端触发逻辑功能模块和所述网关终端 设备协商所述 IP数据包使用的特定端口号。 具体协商方式可以有两种: 所述终 端触发逻辑功能模块从所述网关接收所述特定端口号, 其中, 所述特定端口号 由所述网关终端设备封装在 PDP激活请求消息或 PDN连接建立请求消息中的协 议配置项 PCO信元中发送到所述网关,其中所述 PDP激活请求消息为激活所述 PDP上下文过程中传输的消息, 所述 PDN连接建立请求消息为建立所述 PDN 连接过程中传输的消息; 或者,
所述终端触发逻辑功能模块向所述网关发送所述特定端口号, 以便所述网 关将所述特定端口号封装在 PDP激活响应消息或 PDN连接建立响应消息的 PCO 信元中发送给所述网关终端设备,其中,所述 PDP激活响应消息为激活所述 PDP 上下文过程中传输的消息, 所述 PDN连接建立响应消息为建立所述 PDN连接 过程中传输的消息。
其中, 上述的 PDP激活请求消息和 PDP激活响应消息为激活所述 PDP上 下文过程中传输的消息, 所述 PDN连接建立请求消息和所述 PDN连接建立响 应消息可为建立所述 PDN连接过程中传输的消息。
即,网关终端设备在建立 PDN连接的过程中,将所述特定端口号封装在 PDN 连接建立请求消息中的 PCO信元中发送到网关(如, GGSN或 PGW ), 再由所 述网关解析获得所述特定端口号后, 将所述特定端口号发送给所述终端触发逻 辑功能模块; 或者,
网关终端设备在建立 PDN连接的过程中, 所述终端触发逻辑功能模块将所 述特定端口号发送给网关(如, 网关 GPRS 支持节点 (Gateway GPRS Support 后由所述网关将所述特定端口号包含在 PCO信元中发送给网关终端设备 (如, 由 GGSN或 PGW将所述特定端口号包含在 PCO信元中通过 SGSN或 MME发 送给网关终端设备)。
当然, 也可以采用其他协商方式, 如由网络中的其他设备将所述特定端口 号分别配置在终端触发逻辑功能模块和网关终端设备上。
为了进一步描述本发明实施例的技术方案, 以下以图 3 所示的流程进行描 述, 本例中的网络侧设备为 MTC服务器。
301、 MTC服务器向终端触发逻辑功能模块发送触发请求消息,所述触发请 求消息中携带终端的应用标识。
302、 终端触发逻辑模块获得了终端的应用标识之后, 终端触发逻辑模块根 据终端的应用标识获得网关终端设备的内部标识 (例如 IMSI ), 并才艮据网关终端 设备的内部标识查询网关终端设备的 IP地址的有效性(即是否存在合适的 PDN 连接)。
303、 如果网关终端设备的 IP地址有效(存在有效的 IP地址, 或者说存在 有效的 PDN连接 ),则终端触发逻辑功能模块将触发消息通过 PDP或 PDN连接 发送给网关终端设备; 终端触发逻辑功能模块可以采用特殊的端口号将所述触 发消息封装在 IP报文中, 发给网关终端设备。
304、如果网关终端设备的 IP地址无效(不存在有效 PDN连接), 则终端触 发逻辑功能模块首先要触发网关终端设备发起 PDP上下文激活或 PDN连接建立 流程, 如, 终端触发逻辑功能模块发送短消息或其他消息触发网关终端设备发 起 PDP上下文激活或 PDN连接建立流程,在按步骤 203中描述的方式执行相应 步骤。
305、 网关终端设备收到包含触发消息的 IP数据报文后, 网关终端设备检测 到本地网络地址转换 NAT映射关系数据中没有保存于该 IP数据报文对应的 NAT 映射, 则网关设备解析所述 IP数据报文获得其中包含的触发消息; 或者, 网关 终端设备根据特殊的端口号获知所述 IP数据报文中包含触发消息, 则网关终端 设备解析所述 IP数据报文获得其中包含的触发消息。 然后, 网关终端设备根据 触发消息中的终端应用标识获知终端设备的私网 IP地址, 将所述触发消息发送 给相应的终端设备;
306、 所述终端设备接收到触发消息后, 终端设备向服务器发起应用层的业 务连接。 终端设备发送的业务连接应用数据通过所述网关终端设备; 网关终端 设备上的 NAT功能模块为终端设备建立私网地址和公网地址之间的映射关系。
307、 终端设备发送的应用业务数据报文经过网关终端设备后, 在步骤 306 网关终端设备上的 NAT功能模块为终端设备建立私网地址和公网地址之间的映 射关系, 然后网关终端设备将所述数据报文的源地址替换为 NAT映射后的公网 地址, 然后根据所述公网地址, 将所述数据报文发送给服务器; 此后, 服务器 就获得了终端设备可路由的公网地址。
通过上述实施例描述可知, 在本发明具体实施例总, 网关终端设备不需要 对所有的消息进行应用层的解析, 而通过一定的判断原则, 如根据 IP数据包的 特定端口号或 NAT映射关系判断该 IP数据包中是否包括触发消息 ,对于确定不 包括触发消息的 IP数据包不进行应用层的解析, 这样就可以极大的减少网关终 端设备侧需要解析的 IP数据包, 减轻网关终端设备的负荷; 而在现有技术中, 需要网关终端设备对所有接收的来自网络的 IP数据包进行解析, 才能获知该 IP 数据包是否包括触发消息, 进而按照触发消息的处理流程进行后续处理。 可见, 本发明实施例中的方案大大减少了网关终端设备的工作量。
相应的, 本发明实施例还提供了一种业务触发系统, 如图 4所示, 该系统 包括网络侧设备 1 , 触发装置 2, 网关 4, 和网关终端设备 3 , 其中触发装置 2, 用于接收所述网络侧设备发送的触发消息, 根据所述触发消息中的终端的应用 标识确定所述应用标识对应的所述网关终端设备的内部标识, 根据所述内部标 识确定所述网关终端设备的 IP地址,使用所述网关终端设备的 IP地址向网关发 送所述 IP数据包,以便所述网关使用与所述网关终端设备的 IP地址对应的 PDP 上下文或 PDN连接发送所述 IP数据包给所述网关终端设备; 网关终端设备 3 , 用于使用所述 PDP上下文或所述 PDN连接接收所述 IP数据包, 判断所述 IP数 据包中是否包括所述触发消息, 当判断结果为包括所述触发消息时, 解析所述 IP数据包获得所述应用标识, 根据所述应用标识确定所述终端的私网 IP地址, 将所述触发消息发送给所述终端, 以便所述终端根据所述触发消息主动向所述 网络侧设备发起业务连接。
其中, 所述判断所述 IP数据包中是否包括所述触发消息, 可包括: 检测所 述 IP数据包是否使用特定端口号, 当检测结果为使用了特定端口号时, 确定所 述 IP数据包中包括触发消息; 或,检测本地是否存储有所述 IP数据包的地址对 应的网络地址转换 NAT映射关系, 当检测结果为不存在 NAT映射关系时,所述 网关终端设备解析所述 IP数据包,根据解析结果判断所述 IP数据包中是否存在 触发消息。
所述根据所述内部标识确定所述网关终端设备的 IP地址, 可包括: 根据所 述网关终端设备的内部标识查询映射关系数据中是否存在与所述 PDP上下文或 所述 PDN连接对应的所述网关终端设备的 IP地址,其中,所述映射关系数据中 存储有网关终端设备的内部标识和 IP地址的对应关系; 当查询结果为存在时, 获取所述映射关系数据中的所述网关终端设备的 IP地址; 或者, 当查询结果为 不存在时, 通过所述网关触发所述网关终端设备建立所述 PDP 上下文或所述 PDN连接, 接收所述网关发送的与所述 PDP上下文或 PDN连接对应的所述终 端设备的 IP地址。
如图 5所示, 则是用于上述的业务触发系统中的触发装置 2的具体组成示 意图。 其包括: 第一接收单元 20, 用于接收网络侧设备发送的触发消息, 所述 触发消息中包括所述网络侧设备要触发的终端的应用标识; 标识映射单元 22, 用于根据所述应用标识确定所述应用标识对应的网关终端设备的内部标识第一 发送单元 24, 用于根据所述内部标识确定所述网关终端设备的 IP地址, 使用所 述网关终端设备的 IP地址向网关发送所述 IP数据包,以便所述网关使用与所述 网关终端设备的 IP地址对应的 PDP上下文或 PDN连接发送所述 IP数据包给所 述网关终端设备。
如图 6所示, 第一发送单元 24可包括: 地址查询子单元 240, 用于根据所 述网关终端设备的内部标识查询映射关系数据中是否存在与所述 PDP上下文或 所述 PDN连接对应的所述网关终端设备的 IP地址,其中,所述映射关系数据中 存储有网关终端设备的内部标识和 IP地址的对应关系; 地址获取子单元 242, 用于当查询结果为存在时, 获取所述映射关系数据中的所述网关终端设备的 IP 地址; 或者, 当查询结果为不存在时, 通过网关触发所述网关终端设备建立所 述 PDP上下文或所述 PDN连接,接收所述网关发送的与所述 PDP上下文或 PDN 连接对应的所述终端设备的 IP地址。
其中, 上述的 IP数据包可使用特定端口号, 则相应的, 如图 7所示, 该触 发装置 2可进一步包括第一协商单元 26, 用于和所述网关终端设备 3协商所述 IP数据包使用的特定端口号。
具体的, 第一协商单元 26可用于: 从所述网关接收所述特定端口号, 其中, 所述特定端口号由所述网关终端设备封装在 PDP激活请求消息或 PDN连接建立 请求消息中的协议配置项 PCO信元中发送到所述网关,其中所述 PDP激活请求 消息为激活所述 PDP上下文过程中传输的消息,所述 PDN连接建立请求消息为 建立所述 PDN连接过程中传输的消息; 或者,
向所述网关发送所述特定端口号, 以便所述网关将所述特定端口号封装在 PDP激活响应消息或 PDN连接建立响应消息的 PCO信元中发送给所述网关终 端设备, 其中, 所述 PDP激活响应消息为激活所述 PDP上下文过程中传输的消 息, 所述 PDN连接建立响应消息为建立所述 PDN连接过程中传输的消息。
如图 8所示, 为本发明实施例中的网关终端设备 3的一个具体组成示意图。 其可包括: 第二接收单元 30, 用于使用 PDP上下文或 PDN连接接收终端触发 逻辑功能模块发送的 IP数据包; 判断单元 32, 用于判断所述 IP数据包中是否 包括触发消息, 其中, 所述触发消息中包括网络侧设备要触发的终端的应用标 识; 消息处理单元 34, 用于当判断结果为包括触发消息时, 解析所述 IP数据包 获得所述触发消息中的所述应用标识, 根据所述应用标识确定所述终端的私网 IP地址, 使用所述私网 IP地址将所述触发消息发送给所述终端, 以便所述终端 根据所述触发消息主动向所述网络侧设备发起业务连接。 其中, 该触发逻辑功 能模块具体可以是前述的触发装置。
其中, 如图 9所示, 判断单元 32可包括: 端口号判断子单元 320, 用于检 测所述 IP数据包是否使用特定端口号, 当检测结果为使用了特定端口号时, 确 定所述 IP数据包中包括触发消息; 或包括, 映射关系判断子单元 322, 用于检 测本地是否存储有所述 IP数据包的地址对应的 NAT映射关系,当检测结果为不 存在 NAT映射关系时, 解析所述 IP数据包, 并根据解析结果判断所述 IP数据 包中是否存在触发消息。 如图 10所示, 网关终端设备 3还可包括第二协商单元 31 , 用于与终端触发 逻辑功能模块协商所述 IP数据包使用的特定的端口号。
所述第二协商单元 31具体用于,将所述特定端口号封装在 PDP激活请求消 息或 PDN连接建立请求消息中的协议配置项 PCO信元中发送到网关, 以便所 述网关解析所述 PDP激活请求消息或所述 PDN连接建立请求消息获得所述特定 端口号, 将所述特定端口号发送给所述终端触发逻辑功能模块; 或者,
用于接收网关发送的 PDP激活响应消息或 PDN连接建立响应消息,从所述 PDP激活响应消息或所述 PDN连接建立响应消息的 PCO信元中提取所述特定 端口号, 其中, 所述特定端口号由所述终端触发逻辑功能模块发送给所述网关; 其中, 所述 PDP激活请求消息和所述 PDP激活响应消息为激活所述 PDP 上下文过程中传输的消息, 所述 PDN连接建立请求消息和所述 PDN连接建立 响应消息为建立所述 PDN连接过程中传输的消息。
进一步的, 如图 11所示, 上述网关终端设备 3还可包括: 业务数据接收单 元 33 ,用于接收所述终端在收到触发消息后发送的数据报文;映射建立单元 35 , 用于根据所述数据报文为所述终端在本地 NAT映射关系数据中建立 NAT映射关 系,将所述数据报文中的所述私网 IP地址替换为所述 NAT映射关系中的公网 IP 地址, 将所述替换后的数据报文发送给所述网络侧设备, 所述 NAT映射关系包 括所述终端的所述私网 IP地址和所述公网 IP地址的映射关系;业务数据发送单 设备通过所述公网 IP地址向所述终端发送下行数据。映射建立单元 35建立的映 射关系可以被判断单元 32用来判断是否存在 IP数据包的地址对应的 NAT映射 关系。
在上述装置实施例中各模块的关系和功能的描述也可以参考前述的方法实 施例, 此处不做贅述。
通过上述实施例描述可知, 网关终端设备在接收 IP数据包后,先判断 IP数 据包中是否包括触发消息, 当判断包括触发消息时, 再对该 IP数据包进行解析 获得要触发的设备的应用标识; 这样就不需要对网关终端设备上转发的所有 IP 数据包都进行解析, 即可以实现触发业务, 提高了网关终端设备的转发效率。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程, 是可以通过计算机程序来指令相关的硬件来完成, 所述的程序可存储于一计算 机可读取存储介质中, 该程序在执行时, 可包括如上述各方法的实施例的流程。 其中, 所述的存储介质可为磁碟、 光盘、 只读存储记忆体(Read-Only Memory, ROM )或随机存储记忆体(Random Access Memory, RAM )等。
以上所揭露的仅为本发明一种较佳实施例而已, 当然不能以此来限定本发 明之权利范围, 因此依本发明权利要求所作的等同变化, 仍属本发明所涵盖的 范围。

Claims

权 利 要 求
1、 一种业务触发方法, 其特征在于, 包括:
网关终端设备使用 PDP上下文或 PDN连接接收终端触发逻辑功能模块发送 的互连网协议 IP数据包, 判断所述 IP数据包中是否包括触发消息, 其中, 所述 触发消息中包括网络侧设备要触发的终端的应用标识;
当判断结果为包括触发消息时, 所述网关终端设备解析所述 IP数据包获得 所述触发消息中的所述应用标识;
所述网关终端设备根据所述应用标识确定所述终端的私网 IP地址, 使用所 述私网 IP地址将所述触发消息发送给所述终端, 以便所述终端根据所述触发消 息主动向所述网络侧设备发起业务连接。
2、 如权利要求 1所述的方法, 其特征在于, 所述判断所述 IP数据包中是否 包括触发消息包括:
所述网关终端设备检测所述 IP数据包是否使用特定端口号, 当检测结果为 使用了特定端口号时, 确定所述 IP数据包中包括触发消息; 或,
所述网关终端设备检测本地网络地址转换 NAT映射关系数据中是否存储有 所述 IP数据包的地址对应的 NAT映射关系, 当检测结果为不存在 NAT映射关 系时, 所述网关终端设备解析所述 IP数据包,根据解析结果判断所述 IP数据包 中是否存在触发消息。
3、 如权利要求 1至 2中任一项所述的方法, 其特征在于, 所述 IP数据包使 用特定端口号。
4、 如权利要求 3所述的方法, 其特征在于, 还包括: 所述网关终端设备和 所述终端触发逻辑功能模块协商所述特定端口号。
5、 如权利要求 4所述的方法, 其特征在于, 所述网关终端设备和所述终端 触发逻辑功能模块协商所述特定端口号, 包括:
所述网关终端设备将所述特定端口号封装在 PDP激活请求消息或 PDN连接 建立请求消息中的协议配置项 PCO信元中发送到网关, 以便所述网关解析所述 PDP激活请求消息或所述 PDN连接建立请求消息获得所述特定端口号, 将所述 特定端口号发送给所述终端触发逻辑功能模块; 或者,
所述网关终端设备接收网关发送的 PDP激活响应消息或 PDN连接建立响应 消息 , 从所述 PDP激活响应消息或所述 PDN连接建立响应消息的 PCO信元中 提取所述特定端口号, 其中, 所述特定端口号由所述终端触发逻辑功能模块发 送给所述网关;
其中, 所述 PDP激活请求消息和所述 PDP激活响应消息为激活所述 PDP 上下文过程中传输的消息, 所述 PDN连接建立请求消息和所述 PDN连接建立 响应消息为建立所述 PDN连接过程中传输的消息。
6、 如权利要求 1至 5中任一项所述的方法, 其特征在于, 所述终端根据所 述触发消息主动向所述网络侧设备发起业务连接, 包括:
所述终端收到所述触发消息, 将数据报文发送到所述网关终端设备; 所述网关终端设备根据接收的所述数据报文在本地 NAT映射关系数据中为 所述终端建立 NAT映射关系,将所述数据报文中的所述私网 IP地址替换为所述 NAT映射关系中的公网 IP地址, 将所述替换后的数据报文发送给所述网络侧设 备, 所述 NAT映射关系包括所述终端的所述私网 IP地址和所述公网 IP地址的 映射关系;
所述网络侧设备接收所述替换后的数据报文, 根据所述替换后的数据报文 获得所述公网 IP地址, 通过所述公网 IP地址向所述终端发送下行数据。
7、 如权利要求 1至 6中任一项所述的方法, 其特征在于, 还包括: 所述终端触发逻辑功能模块接收所述网络侧设备发送的所述触发消息; 所述终端触发逻辑功能模块根据所述应用标识确定所述应用标识对应的网 关终端设备的内部标识,并根据所述内部标识确定所述网关终端设备的 IP地址; 所述终端触发逻辑功能模块使用所述网关终端设备的 IP地址向网关发送所 述 IP数据包, 以便所述网关使用与所述 IP地址对应的 PDP上下文或 PDN连接 将所述 IP数据包发送至所述网关终端设备。
8、 如权利要求 7所述的方法, 其特征在于, 所述根据所述内部标识确定所 述网关终端设备的 IP地址, 包括:
根据所述网关终端设备的内部标识查询在所述映射关系数据中是否存在所 述网关终端设备的 IP地址, 其中, 所述映射关系数据中存储有网关终端设备的 内部标识和 IP地址的对应关系;
当查询结果为存在时, 获取所述映射关系数据中的与所述 PDP上下文或所 述 PDN连接对应的所述网关终端设备的 IP地址; 或者,
当查询结果为不存在时, 所述终端触发逻辑功能模块触发所述网关终端设 备激活所述 PDP上下文或建立所述 PDN连接,接收所述网关发送的与所述 PDP 上下文或 PDN连接对应的所述终端设备的 IP地址。
9、 一种业务触发方法, 其特征在于, 包括:
终端触发逻辑功能模块接收网络侧设备发送的触发消息, 其中, 所述触发 消息中包括所述网络侧设备要触发的终端的应用标识;
根据所述内部标识确定所述网关终端设备的 IP地址;
根据所述网关终端设备的 IP地址向网关发送所述 IP数据包,以便所述网关 使用与所述 IP地址对应的 PDP上下文或 PDN连接将所述 IP数据包发送至所述 网关终端设备。
10、 如权利要求 9所述的方法, 其特征在于, 所述根据所述内部标识确定 所述网关终端设备的 IP地址, 包括:
根据所述网关终端设备的内部标识查询映射关系数据中是否存在所述网关 终端设备的 IP地址, 其中, 所述映射关系数据中存储有网关终端设备的内部标 识和 IP地址的对应关系;
当查询结果为存在时, 获取所述映射关系数据中的所述网关终端设备的 IP 地址; 或者,
当查询结果为不存在时, 所述终端触发逻辑功能模块通过网关触发所述网 关终端设备建立所述 PDP上下文或所述 PDN连接,接收所述网关发送的与所述 PDP上下文或 PDN连接对应的所述终端设备的 IP地址。
11、 如权利要求 9或 10所述的的方法, 其特征在于, 所述 IP数据包使用特 定端口号。
12、 如权利要求 11所述的方法, 其特征在于, 还包括: 所述终端触发逻辑 功能模块和所述网关终端设备协商所述 IP数据包使用的特定端口号。
13、 如权利要求 12所述的方法, 其特征在于, 所述终端触发逻辑功能模块 和所述网关终端设备协商所述 IP数据包使用的特定端口号, 包括:
所述终端触发逻辑功能模块从所述网关接收所述特定端口号, 其中, 所述 特定端口号由所述网关终端设备封装在 PDP激活请求消息或 PDN连接建立请求 消息中的协议配置项 PCO信元中发送到所述网关,其中所述 PDP激活请求消息 为激活所述 PDP上下文过程中传输的消息,所述 PDN连接建立请求消息为建立 所述 PDN连接过程中传输的消息; 或者,
所述终端触发逻辑功能模块向所述网关发送所述特定端口号, 以便所述网 关将所述特定端口号封装在 PDP激活响应消息或 PDN连接建立响应消息的 PCO 信元中发送给所述网关终端设备,其中,所述 PDP激活响应消息为激活所述 PDP 上下文过程中传输的消息, 所述 PDN连接建立响应消息为建立所述 PDN连接 过程中传输的消息。
14、 一种网关终端设备, 其特征在于, 包括:
第二接收单元,用于使用 PDP上下文或 PDN连接接收终端触发逻辑功能模 块发送的 IP数据包;
判断单元, 用于判断所述 IP数据包中是否包括触发消息, 其中, 所述触发 消息中包括网络侧设备要触发的终端的应用标识;
消息处理单元, 用于当判断结果为包括触发消息时, 解析所述 IP数据包获 得所述触发消息中的所述应用标识, 根据所述应用标识确定所述终端的私网 IP 地址, 使用所述私网 IP地址将所述触发消息发送给所述终端, 以便所述终端根 据所述触发消息主动向所述网络侧设备发起业务连接。
15、如权利要求 14所述的网关终端设备, 其特征在于, 所述判断单元包括: 端口号判断子单元, 用于检测所述 IP数据包是否使用特定端口号, 当检测 结果为使用了特定端口号时, 确定所述 IP数据包中包括触发消息; 或,
映射关系判断子单元, 用于检测本地网络地址转换 NAT映射关系数据中是 否存储有所述 IP数据包的地址对应的网络地址转换 NAT映射关系,当检测结果 为不存在 NAT映射关系时, 解析所述 IP数据包, 根据解析结果判断所述 IP数 据包中是否存在触发消息。
16、 如权利要求 14或 15所述的网关终端设备, 其特征在于还包括: 第二协商单元, 用于与终端触发逻辑功能模块协商所述 IP数据包使用的特 定端口号。
17、 如权利要求 16所述的网关终端设备, 其特征在于:
所述第二协商单元, 用于将所述特定端口号封装在 PDP 激活请求消息或 PDN连接建立请求消息中的协议配置项 PCO信元中发送到网关,以便所述网关 解析所述 PDP激活请求消息或所述 PDN连接建立请求消息获得所述特定端口 号, 将所述特定端口号发送给所述终端触发逻辑功能模块; 或者,
用于接收网关发送的 PDP激活响应消息或 PDN连接建立响应消息,从所述 PDP激活响应消息或所述 PDN连接建立响应消息的 PCO信元中提取所述特定 端口号, 其中, 所述特定端口号由所述终端触发逻辑功能模块发送给所述网关; 其中, 所述 PDP激活请求消息和所述 PDP激活响应消息为激活所述 PDP 上下文过程中传输的消息, 所述 PDN连接建立请求消息和所述 PDN连接建立 响应消息为建立所述 PDN连接过程中传输的消息。
18、 如权利要求 14〜17 中任一项所述的网关终端设备, 其特征在于, 还包 括:
业务数据接收单元, 用于接收所述终端在收到所述触发消息后发送的数据 报文;
映射建立单元, 用于根据所述数据报文在本地 NAT映射关系数据中为所述 终端建立 NAT映射关系,将所述数据报文中的所述私网 IP地址替换为所述 NAT 映射关系中的公网 IP地址, 将所述替换后的数据报文发送给所述网络侧设备, 所述 NAT映射关系包括所述终端的所述私网 IP地址和所述公网 IP地址的映射 关系; 以便所述网络侧设备通过所述公网 IP地址向所述终端发送下行数据。
19、 一种触发装置, 其特征在于, 所述触发装置包括:
第一接收单元, 用于接收网络侧设备发送的触发消息, 其中, 所述触发消 息中包括所述网络侧设备要触发的终端的应用标识;
标识映射单元, 用于根据所述应用标识确定所述应用标识对应的网关终端 设备的内部标识,
第一发送单元, 用于根据所述内部标识确定所述网关终端设备的 IP地址, 使用所述网关终端设备的 IP地址向网关发送所述 IP数据包,以便所述网关使用 与所述网关终端设备的 IP地址对应的 PDP上下文或 PDN连接发送所述 IP数据 包给所述网关终端设备。
20、如权利要求 19所述的触发装置, 其特征在于, 所述第一发送单元包括: 地址查询子单元, 用于根据所述网关终端设备的内部标识查询映射关系数 据中是否存在与所述 PDP上下文或所述 PDN连接对应的所述网关终端设备的 IP地址, 其中, 所述映射关系数据中存储有网关终端设备的内部标识和 IP地址 的对应关系;
地址获取子单元, 用于当查询结果为存在时, 获取所述映射关系数据中的 所述网关终端设备的 IP地址; 或者, 当查询结果为不存在时, 通过网关触发所 述网关终端设备建立所述 PDP上下文或所述 PDN连接,接收所述网关发送的与 所述 PDP上下文或 PDN连接对应的所述终端设备的 IP地址。
21、 如权利要求 19或 20所述的触发装置, 其特征在于, 还包括: 第一协商单元, 用于和所述网关终端设备协商所述 IP数据包使用的特定端 口号。
22、 如权利要求 21所述的触发装置, 其特征在于: 所述第一协商单元, 用于从所述网关接收所述特定端口号, 其中, 所述特 定端口号由所述网关终端设备封装在 PDP激活请求消息或 PDN连接建立请求消 息中的协议配置项 PCO信元中发送到所述网关,其中所述 PDP激活请求消息为 激活所述 PDP上下文过程中传输的消息,所述 PDN连接建立请求消息为建立所 述 PDN连接过程中传输的消息; 或者,
向所述网关发送所述特定端口号, 以便所述网关将所述特定端口号封装在 PDP激活响应消息或 PDN连接建立响应消息的 PCO信元中发送给所述网关终 端设备, 其中, 所述 PDP激活响应消息为激活所述 PDP上下文过程中传输的消 息, 所述 PDN连接建立响应消息为建立所述 PDN连接过程中传输的消息。
23、 一种业务触发系统, 其特征在于, 所述系统包括: 网络侧设备, 触发 装置, 网关, 和网关终端设备;
所述触发装置, 用于接收所述网络侧设备发送的触发消息, 根据所述触发 消息中的终端的应用标识确定所述应用标识对应的所述网关终端设备的内部标 识, 根据所述内部标识确定所述网关终端设备的 IP地址, 使用所述网关终端设 备的 IP地址向网关发送所述 IP数据包,以便所述网关使用与所述网关终端设备 的 IP地址对应的 PDP上下文或 PDN连接发送所述 IP数据包给所述网关终端设 备;
所述网关终端设备, 用于使用所述 PDP上下文或所述 PDN连接接收所述 IP数据包, 判断所述 IP数据包中是否包括所述触发消息, 当判断结果为包括所 述触发消息时, 解析所述 IP数据包获得所述应用标识, 根据所述应用标识确定 所述终端的私网 IP地址, 将所述触发消息发送给所述终端, 以便所述终端根据 所述触发消息主动向所述网络侧设备发起业务连接。
24、如权利要求 23所述的系统, 其特征在于, 所述判断所述 IP数据包中是 否包括所述触发消息, 包括:
检测所述 IP数据包是否使用特定端口号, 当检测结果为使用了特定端口号 时, 确定所述 IP数据包中包括触发消息; 或,
检测本地网络地址转换 NAT映射关系数据中是否存储有所述 IP数据包的地 址对应的网络地址转换 NAT映射关系, 当检测结果为不存在 NAT映射关系时, 所述网关终端设备解析所述 IP数据包,根据解析结果判断所述 IP数据包中是否 存在触发消息。
25、 如权利要求 23或 24所述的系统, 其特征在于, 所述根据所述内部标 识确定所述网关终端设备的 IP地址, 包括:
根据所述网关终端设备的内部标识查询映射关系数据中是否存在与所述 PDP上下文或所述 PDN连接对应的所述网关终端设备的 IP地址, 其中, 所述 映射关系数据中存储有网关终端设备的内部标识和 IP地址的对应关系;
当查询结果为存在时, 获取所述映射关系数据中的所述网关终端设备的 IP 地址; 或者, 当查询结果为不存在时, 通过所述网关触发所述网关终端设备建 立所述 PDP上下文或所述 PDN连接, 接收所述网关发送的与所述 PDP上下文 或 PDN连接对应的所述终端设备的 IP地址。
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