CN103298030A - Roaming communication method and roaming communication system based on MTC device - Google Patents

Roaming communication method and roaming communication system based on MTC device Download PDF

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Publication number
CN103298030A
CN103298030A CN2012100500516A CN201210050051A CN103298030A CN 103298030 A CN103298030 A CN 103298030A CN 2012100500516 A CN2012100500516 A CN 2012100500516A CN 201210050051 A CN201210050051 A CN 201210050051A CN 103298030 A CN103298030 A CN 103298030A
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China
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mtc
external interface
functional entity
interface functional
equipment
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CN2012100500516A
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CN103298030B (en
Inventor
余万涛
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ZTE Corp
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ZTE Corp
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Priority to CN201210050051.6A priority Critical patent/CN103298030B/en
Priority to PCT/CN2012/074122 priority patent/WO2013127117A1/en
Publication of CN103298030A publication Critical patent/CN103298030A/en
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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
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/12—Mobility data transfer between location registers or mobility servers

Abstract

The invention discloses a roaming communication method and a roaming communication system based on an MTC device. The roaming communication method comprises the following steps that firstly, an MCT external interface functional entity of a calling network receives first communication data sent to an MTC server from the MTC device; secondly, the MCT external interface functional entity of the calling network determines an MTC external interface functional entity of a home network of the MCT device according to registration information of the MTC device; thirdly, the MCT external interface functional entity of the calling network routes the first communication data to the MTC server from the MTC external interface functional entity of the home network. According to the technical scheme, the support for the roaming communication of the MCT device is achieved, the safety of an external interface of the MTC device communication is guaranteed, and the effect of the load balance of the MTC communication in the 3GPP network is improved.

Description

The roaming communication method of MTC equipment and system
Technical field
The present invention relates to the communications field, in particular to a kind of roaming communication method and system of MTC equipment.
Background technology
Machine class communication (Machine Type Communication abbreviates MTC as) refers to the employing wireless communication technology, realizes data communication and a series of technology that exchange and the general name of combination thereof between machine and machine, machine and the people.MTC has two layers of meaning: the ground floor implication is machine itself, is called smart machine in built-in field.Second layer implication is the connection between machine and the machine, by network machine is linked together.The range of application of machine class communication is very extensive, and for example: intelligent measure, remote monitoring, tracking, medical treatment etc. make the human lives more intelligent.Compare with traditional interpersonal communication, MTC equipment (MTC Device) enormous amount, application is extensive, has huge market prospects.Fig. 1 is the schematic diagram according to the machine class communication system architecture of correlation technique.As shown in Figure 1, MTC Device communicates with MTC server (MTC Server) by 3GPP network and external interface functional entity MTC-IWF (MTC InterWorking Function).Fig. 2 be according to correlation technique when MTC equipment is roamed, for the scene of home network route, the schematic diagram of machine class communication system architecture.Fig. 3 be according to correlation technique when MTC equipment is roamed, for the scene of local break-out, the schematic diagram of machine class communication system architecture.As shown in Figures 2 and 3, when MTC equipment is roamed, the MTC related communication all will produce relevant signaling and communication data flow in home network and visited network.Particularly signaling and the communication data flow that causes when a large amount of MTC equipment is roamed will take a lot of Internet resources, thereby may have influence on normal non-MTC communication.
Based on security consideration, when MTC Server is positioned at the 3GPP network-external, can introduces MTC security gateway (MTC-Security Gateway) and be used for MTC Server is carried out authentication and authorization, thereby guarantee the fail safe of external interface.Fig. 4 be according to correlation technique after introducing security gateway, the schematic diagram of the connected system of external interface.As shown in Figure 4, when MTC equipment is roamed, the angle that connects from external interface, after introducing the MTC security gateway, it is the same that the external interface in the home network route scene connects when non-roaming.Fig. 5 be according to correlation technique after introducing the MTC security gateway, the schematic diagram of the external interface connected system in the local break-out scene.As shown in Figure 5, in the time of outside MTC Server is in the 3GPP network, after introducing MTC security gateway is as MTC external interface functional entity (MTC-IWF), though guaranteed the fail safe of external interface, but based on present MTC system architecture, when MTC equipment is roamed, the MTC related communication all will produce relevant signaling and communication data flow in home network and visited network.Particularly signaling and the communication data flow that causes when a large amount of MTC equipment is roamed will take a lot of Internet resources, thereby may have influence on normal non-MTC communication.
From the angle of MTC system architecture, the connected mode of roaming and non-roaming system architecture external interface supports communication security and the roaming of MTC equipment to have material impact to the MTC system.In the prior art, no matter be interpersonal non-MTC communication, or machine communicate by letter with MTC between the machine, all need be handled by MME, thereby increase the load of MME.After introducing MTC security gateway is as MTC external interface functional entity (MTC-IWF), how under the situation that guarantees external interface safety, at the situation of MTC equipment roaming, improving the load balance of MTC related communication in the 3GPP network is the problem that needs solution.
Summary of the invention
The invention provides a kind of roaming communication method and system of MTC equipment, to solve at least in the correlation technique, the signaling and the communication data flow that cause when a large amount of MTC equipment roamings take too much Internet resources, thereby influence the problem of normal non-MTC communication.
A kind of roaming communication method of MTC equipment is provided according to an aspect of the present invention.
Roaming communication method according to MTC equipment of the present invention comprises: the MTC external interface functional entity of visited network receives first communication data that MTC equipment sends to the MTC server; The MTC external interface functional entity of visited network is determined the MTC external interface functional entity of the home network of MTC equipment according to the log-on message of MTC equipment; The MTC external interface functional entity of visited network is routed to the MTC server with first communication data via the MTC external interface functional entity of home network.
Preferably, before the MTC of visited network external interface functional entity reception MTC equipment sends to first communication data of MTC server, also comprise: when MTC equipment is attached to visited network, the MTC external interface functional entity of home network receives the log-on message that comes from MTC equipment and preserves, wherein, the MTC external interface functional entity of home network is set up the routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this home network and visited network according to the log-on message of MTC equipment; When MTC equipment is attached to visited network, the MTC external interface functional entity of visited network receives the log-on message that comes from MTC equipment and preserves, wherein, the MTC external interface functional entity of visited network is set up the routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this visited network and home network according to the log-on message of MTC equipment.
Preferably, the MTC external interface functional entity of visited network is routed to the MTC server with first communication data via the MTC external interface functional entity of home network and comprises: being connected of foundation in advance between the MTC external interface functional entity of the MTC external interface functional entity of the MTC external interface functional entity of visited network by visited network and home network, first communication data is routed to the MTC server via the MTC external interface functional entity of home network.
Preferably, the MTC external interface functional entity of visited network is routed to first communication data after the MTC server via the MTC external interface functional entity of home network, and also comprise: the MTC external interface functional entity of home network receives the second communication data that the MTC server sends to MTC equipment; The MTC external interface functional entity of home network is determined the MTC external interface functional entity of the current visited network that adheres to of MTC equipment according to the log-on message of MTC equipment; The MTC external interface functional entity of home network is routed to MTC external interface functional entity in the visited network with the second communication data; MTC external interface functional entity in the visited network sends to MTC equipment with the second communication data.
Preferably, MT reconnaissance C external interface functional entity is one of following: the MTC security gateway; The external interface functional entity that comprises MTC security gateway function; MTC security gateway and the combination that comprises the external interface functional entity of MTC security gateway function.
Preferably, above-mentioned log-on message be following one of at least: MTC equipment contracted user's identity information and the identity information of MTC equipment; The network of network identity information that MTC equipment adheres to.
The roaming communication method of another kind of MTC equipment is provided according to a further aspect in the invention.
Roaming communication method according to MTC equipment of the present invention comprises: the MTC external interface functional entity of home network receives the third communication data that the MTC server sends to MTC equipment; The MTC external interface functional entity of home network is determined the MTC external interface functional entity of the current visited network that has roamed into of MTC equipment according to the log-on message of MTC equipment; The MTC external interface functional entity of home network sends to MTC equipment with third communication data via the MTC external interface functional entity of visited network.
Preferably, before the MTC of home network external interface functional entity reception MTC server sends to the third communication data of MTC equipment, also comprise: when MTC equipment is attached to visited network, the MTC external interface functional entity of home network receives the log-on message that comes from MTC equipment and preserves, wherein, the MTC external interface functional entity of home network is set up the routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this home network and visited network according to the log-on message of MTC equipment; When MTC equipment is attached to visited network, the MTC external interface functional entity of visited network receives the log-on message that comes from MTC equipment and preserves, wherein, the MTC external interface functional entity of visited network is set up the routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this visited network and home network according to the log-on message of MTC equipment.
Preferably, the MTC external interface functional entity of home network sends to MTC equipment with third communication data via the MTC external interface functional entity of visited network and comprises: being connected of foundation in advance between the MTC external interface functional entity of the MTC external interface functional entity of the MTC external interface functional entity of home network by home network and visited network, third communication data are sent to MTC equipment via the MTC external interface functional entity of visited network.
Preferably, after the MTC of home network external interface functional entity sent to MTC equipment with third communication data via the MTC external interface functional entity of visited network, also comprise: the MTC external interface functional entity of visited network received the four-way letter data that MTC equipment sends to the MTC server; The MTC external interface functional entity of visited network is routed to MTC external interface functional entity in the home network with the four-way letter data; MTC external interface functional entity in the home network is routed to the MTC server with the four-way letter data.
Preferably, MT reconnaissance C external interface functional entity is one of following: the MTC security gateway; The external interface functional entity that comprises MTC security gateway function; MTC security gateway and the combination that comprises the external interface functional entity of MTC security gateway function.
Preferably, above-mentioned log-on message be following one of at least: MTC equipment contracted user's identity information and the identity information of MTC equipment; The network of network identity information that MTC equipment adheres to.
A kind of roaming communication system of MTC equipment is provided according to another aspect of the invention.
Roaming communication system according to MTC equipment of the present invention comprises: this system comprises: the MTC external interface functional entity of visited network; The MTC external interface functional entity of visited network comprises: first receiver module is used for receiving first communication data that MTC equipment sends to the MTC server; First determination module is for the MTC external interface functional entity of determining the home network of MTC equipment according to the log-on message of MTC equipment; First routing module is used for first communication data is routed to the MTC server via the MTC external interface functional entity of home network.
Preferably, said system also comprises: the MTC external interface functional entity of home network; The MTC external interface functional entity of home network comprises: second receiver module, be used for when MTC equipment is attached to visited network, reception comes from the log-on message of MTC equipment and preserves, wherein, the MTC external interface functional entity of home network is set up the routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this home network and visited network according to the log-on message of MTC equipment; The MTC external interface functional entity of visited network also comprises: the 3rd receiver module, be used for when MTC equipment is attached to visited network, reception comes from the log-on message of MTC equipment and preserves, wherein, the MTC external interface functional entity of visited network is set up the routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this visited network and home network according to the log-on message of MTC equipment.
Preferably, above-mentioned first routing module, be used between the MTC external interface functional entity of MTC external interface functional entity and home network by visited network being connected of foundation in advance, first communication data is routed to the MTC server via the MTC external interface functional entity of home network.
Preferably, the MTC external interface functional entity of above-mentioned home network also comprises: the 4th receiver module is used for receiving the second communication data that the MTC server sends to MTC equipment; The secondary route module is for the MTC external interface functional entity that the second communication data is routed to visited network; The MTC external interface functional entity of visited network also comprises: Third Road is used for the second communication data are routed to MTC equipment by module.
Preferably, MT reconnaissance C external interface functional entity is one of following: the MTC security gateway; The external interface functional entity that comprises MTC security gateway function; MTC security gateway and the combination that comprises the external interface functional entity of MTC security gateway function.
Preferably, above-mentioned log-on message be following one of at least: MTC equipment contracted user's identity information and the identity information of MTC equipment; The network of network identity information that MTC equipment adheres to.
The roaming communication system of another kind of MTC equipment is provided in accordance with a further aspect of the present invention.
Roaming communication system according to MTC equipment of the present invention comprises: the MTC external interface functional entity of home network; The MTC external interface functional entity of home network comprises: the 5th receiver module is used for receiving the third communication data that the MTC server sends to MTC equipment; Second determination module is for the MTC external interface functional entity of determining the current visited network that has roamed into of MTC equipment according to the log-on message of MTC equipment; The 4th routing module is used for third communication data are sent to MTC equipment via the MTC external interface functional entity of visited network.
Preferably, said system also comprises: the MTC external interface functional entity of visited network; The MTC external interface functional entity of visited network comprises: the 6th receiver module is used for receiving the four-way letter data that MTC equipment sends to the MTC server; The 5th routing module is for the MTC external interface functional entity that the four-way letter data is routed to home network; The MTC external interface functional entity of home network also comprises: the 6th routing module is used for the four-way letter data is routed to the MTC server.
By the present invention, the MTC external interface functional entity of employing visited network is determined the MTC external interface functional entity of the home network of this MTC equipment according to the log-on message of MTC equipment, and the routing relation between the MTC external interface functional entity of foundation and home network, MTC external interface functional entity by visited network and the MTC external interface functional entity of home network realize that the communication data between the MTC server of MTC equipment and home network is mutual, solved in the correlation technique, the signaling and the communication data flow that cause when a large amount of MTC equipment roamings take too much Internet resources, thereby influence the problem of normal non-MTC communication, and then reached by the communication data between the MTC server of MTC external interface functional entity processing MTC equipment and home network, thereby under the situation that guarantees external interface safety, situation at the roaming of MTC equipment, improve MTC communication at mobile communications network, as: the effect of the load balance in the 3GPP network.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not constitute improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the machine class communication system architecture of correlation technique;
Fig. 2 be according to correlation technique when MTC equipment is roamed, for the scene of home network route, the schematic diagram of machine class communication system architecture;
Fig. 3 be according to correlation technique when MTC equipment is roamed, for the scene of local break-out, the schematic diagram of machine class communication system architecture;
Fig. 4 be according to correlation technique after introducing the MTC security gateway, the schematic diagram of the connected system of external interface;
Fig. 5 be according to correlation technique after introducing the MTC security gateway, the schematic diagram of the external interface connected system in the local break-out scene;
Fig. 6 is the flow chart according to the roaming communication method of a kind of MTC equipment of the embodiment of the invention;
Fig. 7 is the flow chart according to the roaming communication method of a kind of MTC equipment of the preferred embodiment of the present invention one;
Fig. 8 is the flow chart according to the roaming communication method of a kind of MTC equipment of the preferred embodiment of the present invention two;
Fig. 9 is the flow chart according to the roaming communication method of a kind of MTC equipment of the preferred embodiment of the present invention three;
Figure 10 is the flow chart according to the roaming communication method of the another kind of MTC equipment of the embodiment of the invention;
Figure 11 is the structured flowchart according to the roaming communication system of a kind of MTC equipment of the embodiment of the invention;
Figure 12 is a kind of according to the preferred embodiment of the invention structured flowchart of roaming communication system of MTC equipment;
Figure 13 is the structured flowchart according to the roaming communication system of the another kind of MTC equipment of the embodiment of the invention;
Figure 14 is the structured flowchart of the roaming communication system of another kind of according to the preferred embodiment of the invention MTC equipment;
Figure 15 is the roaming communication system schematic of only using the MTC equipment of a MTC external interface functional entity according to each communication network of the embodiment of the invention; And
Figure 16 is the roaming communication system schematic of using the MTC equipment of two MTC external interface functional entitys according to each communication network of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Fig. 6 is the flow chart according to the roaming communication method of the MTC equipment of the embodiment of the invention.As shown in Figure 6, this method mainly comprises following processing:
Step S602: the MTC external interface functional entity of visited network receives first communication data that MTC equipment sends to the MTC server;
Step S604: the MTC external interface functional entity of visited network is determined the MTC external interface entity of the home network of MTC equipment according to the log-on message of MTC equipment;
Step S606: the MTC external interface functional entity of visited network is routed to the MTC server with first communication data via the MTC external interface functional entity of home network.
In the correlation technique, the signaling and the communication data flow that cause when a large amount of MTC equipment roamings take too much Internet resources, thereby influence normal non-MTC communication.Adopt method as shown in Figure 6, the MTC external interface functional entity of visited network is according to the log-on message that roams to the MTC equipment in this visited network, determine the MTC external interface functional entity of the home network of this MTC equipment, the MTC server of having realized MTC equipment and home network is realized the mutual of communication data by the MTC external interface entity of visited network and the MTC external interface entity of home network, reached and improved MTC communication at mobile communications network, as: the effect of the load balance in the 3GPP network.
MTC equipment can include but not limited to the log-on message that the MTC external interface functional entity of visited network reports: the MTC equipment identity information, as: IMEI; MTC contracted user identity information, as: IMSI.The MTC external interface functional entity of visited network can be set up routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this visited network and home network according to above-mentioned log-on message.
Preferably, at step S602, the MTC external interface functional entity of visited network receives MTC equipment and sends to before first communication data of MTC server, can also comprise following processing:
When (1) MTC equipment is attached to visited network, MTC equipment is registered to the MTC external interface functional entity of home network, the MTC external interface functional entity of home network receives the log-on message that comes from MTC equipment and preserves, wherein, the MTC external interface functional entity of home network can be set up routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this home network and visited network according to above-mentioned log-on message;
When (2) MTC equipment is attached to visited network, MTC equipment is registered to the MTC external interface functional entity of visited network, the MTC external interface entity of visited network receives the log-on message that comes from MTC equipment and preserves, wherein, the MTC external interface functional entity of visited network can be set up routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this visited network and home network according to above-mentioned log-on message.
In preferred implementation process, above-mentioned log-on message can include but not limited to following one of at least:
(1) MTC equipment contracted user's identity information, as: IMSI, and the identity information of MTC equipment, as: IMEI;
(2) the MTC equipment network information of adhering to, as: network identity information.
In a preferred embodiment, MTC equipment contracted user's identity information mainly refers to be installed in the relevant identity information of the subscriber identification card (UICC) on the MTC equipment.In embodiments of the present invention, UICC is last can to comprise user identification module, as: SIM, USIM and ISIM etc.MTC equipment adheres to home network, need register at the MTC of home network external interface entity (MTC security gateway and the external interface functional entity that comprises MTC security gateway function).Log-on message can comprise: MTC equipment contracted user's identity information and MTC equipment identity information, this log-on message can further include the home network identity information, when MTC equipment is roamed and is attached to visited network, need register at the MTC of visited network external interface functional entity (MTC security gateway and the external interface entity that comprises MTC security gateway function).This log-on message can comprise: MTC equipment contracted user's identity information and MTC equipment identity information, this log-on message can further include the visited network identity information.When MTC equipment is roamed and is attached to visited network, also need further to register at the MTC of home network external interface functional entity (MTC security gateway and the external interface entity that comprises MTC security gateway function).This log-on message can comprise MTC equipment contracted user's identity information and MTC equipment identity information, and the identity information of the information of visited network such as visited network.
For realizing supporting the roaming of MTC equipment, MTC external interface functional entity can be an independently MTC security gateway, realize the external interface function, the MTC server is carried out authentication and authorization, guarantee the fail safe of external interface communication, network topology, relaying or the processing signaling agreement that can be used for the shielding mobile communication system simultaneously.MTC external interface entity also can be made up of MTC security gateway entity and the external interface entity (MTC-IWF (MTC Security Gateway)) that comprises MTC security gateway function, realize the external interface function, the MTC server is carried out authentication and authorization, guarantee the fail safe of external interface communication, network topology, relaying or the processing signaling agreement that can be used for the shielding mobile communication system simultaneously.When MTC equipment roams to visited network, after MTC equipment is finished visited network and adhered to, need register by the MTC external interface functional entity in visited network, and need further the MTC external interface functional entity in home network to register.
In a preferred embodiment, according to MTC equipment of the present invention roaming and when being attached to visited network, the MTC external interface functional entity of visited network can be set up routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this visited network and home network according to above-mentioned log-on message.The MTC equipment of roaming is in the MTC external interface functional entity registration of visited network, this MTC equipment also needs further to register to the MTC external interface functional entity of home network, when MTC equipment was roamed, the MTC external interface functional entity of home network can be set up routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this home network and visited network according to above-mentioned log-on message.
In a preferred embodiment, MTC equipment can be preserved, manage and be safeguarded in the information of MTC external interface functional entity registration by MTC external interface functional entity.When the attachment removal of MTC equipment, MTC external interface functional entity can be deleted the log-on message of MTC equipment.In addition, when MTC equipment carried out the position renewal or switches, MTC equipment can be updated in the log-on message that MTC external interface functional entity is preserved.
In embodiments of the present invention, in order to support the roaming of MTC equipment, can set up the connection between different MTC external interface functional entitys in advance.For example, when MTC external interface functional entity is realized by the MTC security gateway, can carry out interconnected between the different MTC security gateways.When MTC external interface functional entity by MTC security gateway entity and comprise the external interface functional entity (MTC-IWF (MTC Security Gateway)) of MTC security gateway function when forming, carry out interconnectedly between the different security gateways, also carry out interconnected between the external interface entity that comprises MTC security gateway function that each are different.In addition, when MTC external interface entity by MTC security gateway entity and comprise the external interface functional entity (MTC-IWF (MTC Security Gateway)) of MTC security gateway function when forming, if desired, MTC security gateway and comprise also can be interconnected between the external interface functional entity of MTC security gateway function.
In addition, in embodiments of the present invention, the connection between the MT reconnaissance C external interface functional entity also must be safe connection, that is, the communication between the MTC external interface functional entity need be carried out safeguard protection.In embodiments of the present invention, the fail safe of communicating by letter between MTC external interface functional entity can be by mobile communications network, as: the security mechanism of 3GPP server net realizes.
Therefore, in step S606, the MTC external interface functional entity of visited network can be by visited network the MTC external interface functional entity of MTC external interface functional entity and home network between being connected of foundation in advance, first communication data is routed to the MTC server via the MTC external interface functional entity of home network.Thereby can when roaming, MTC equipment improve the efficiency of transmission of the communication data between MTC equipment and the MTC server.
Preferably, in embodiments of the present invention, the MTC server is behind the communication data that receives from roaming MTC equipment, also can be to the MTC equipment sending message, therefore, at step S606, the MTC external interface functional entity of visited network is routed to first communication data after the MTC server via the MTC external interface functional entity of home network, can also comprise following processing:
(1) the MTC external interface functional entity of home network receives the second communication data that the MTC server sends to MTC equipment;
(2) the MTC external interface functional entity of home network is routed to MTC external interface functional entity in the visited network with the second communication data;
(3) the MTC external interface functional entity in the visited network sends to MTC equipment with the second communication data.
In a preferred embodiment, for the communication from MTC equipment to the MTC server, can be via the MTC external interface functional entity in the visited network, be routed to MTC external interface functional entity in the home network as: MTC security gateway or the external interface functional entity that comprises MTC security gateway function.For the communication from the MTC server to MTC equipment, can be via the MTC external interface functional entity in the home network, be routed to MTC external interface functional entity in the visited network as: MTC security gateway or the external interface functional entity that comprises MTC security gateway function.For the communication from MTC equipment to the MTC server, the external interface functional entity in the home network will further send to corresponding MTC server from the communication data of roaming MTC equipment.For the communication from the MTC server to MTC equipment, the external interface functional entity in the visited network will further send to roaming MTC equipment from the communication data of MTC server.
Below in conjunction with Fig. 7 to Fig. 9 above-mentioned preferred implementation is further described.
Fig. 7 is the flow chart according to the roaming communication method of the MTC equipment of the preferred embodiment of the present invention one.As shown in Figure 7, this method can comprise following treatment step:
Step S702: when MTC equipment was roamed, after MTC equipment was attached to visited network, further the MTC external interface functional entity in home network was registered.Log-on message can comprise the network identity information of MTC equipment contracted user's identity information, MTC equipment identity information and visited network.
Step S704: when MTC equipment is roamed, be attached to visited network after, also need further the MTC external interface functional entity in visited network to register.Log-on message can comprise MTC equipment contracted user's identity information and MTC equipment identity information.
Need to prove that log-on message can further include the identity information of visited network as required.
Step S706: for the communication from MTC equipment to the MTC server, the external interface functional entity in the home network will further send to corresponding MTC server from the communication data of roaming MTC equipment.For the communication from the MTC server to MTC equipment, the external interface functional entity in the visited network will further send to roaming MTC equipment from the communication data of MTC server.
Fig. 8 is the flow chart according to the roaming communication method of the MTC equipment of the preferred embodiment of the present invention two.As shown in Figure 8, this method can comprise following treatment step:
Step S802: when MTC equipment was roamed, after MTC equipment was attached to visited network, further the MTC security gateway in home network was registered.Log-on message can comprise the network identity information of MTC equipment contracted user's identity information, MTC equipment identity information and visited network.
Step S804: when MTC equipment is roamed, be attached to visited network after, also need further the MTC security gateway in visited network to register.Log-on message can comprise MTC equipment contracted user's identity information and MTC equipment identity information.
Need to prove that log-on message can further include the identity information of visited network as required.
Step S806: for the communication from MTC equipment to the MTC server, the security gateway in the home network will further send to corresponding MTC server from the communication data of roaming MTC equipment.For the communication from the MTC server to MTC equipment, the MTC security gateway in the visited network will further send to roaming MTC equipment from the communication data of MTC server.
Fig. 9 is the flow chart according to the roaming communication method of the MTC equipment of the preferred embodiment of the present invention three.As shown in Figure 9, this method can comprise following treatment step:
Step S902: when MTC equipment was roamed, when MTC equipment was attached to visited network, further the external interface functional entity that comprises MTC security gateway function in home network was registered.Log-on message can comprise the network identity information of MTC equipment contracted user's identity information, MTC equipment identity information and visited network.
Step S904: when MTC equipment is roamed, be attached to visited network after, also need further the external interface functional entity that comprises MTC security gateway function in visited network to register.Log-on message can comprise MTC equipment contracted user's identity information and MTC equipment identity information.
Need to prove that log-on message can further include the identity information of visited network as required.
Step S906: for the communication from MTC equipment to the MTC server, the external interface functional entity that comprises MTC security gateway function in the home network will further send to corresponding MTC server from the communication data of roaming MTC equipment.For the communication from the MTC server to MTC equipment, the External Functionality Interface entity that comprises MTC security gateway function in the visited network will further send to roaming MTC equipment from the communication data of MTC server.
Figure 10 is the flow chart according to the roaming communication method of the MTC equipment of the embodiment of the invention.As shown in figure 10, this method mainly comprises following processing:
Step S1002: the MTC external interface functional entity of home network receives the third communication data that the MTC server sends to MTC equipment;
Step S1004: the MTC external interface functional entity of home network is determined the MTC external interface functional entity of the current visited network that has roamed into of MTC equipment according to the log-on message of MTC equipment;
Step S1006: the MTC external interface functional entity of home network sends to MTC equipment with third communication data via the MTC external interface functional entity of visited network.
Adopt method as shown in figure 10, solved in the correlation technique, the signaling and the communication data flow that cause when a large amount of MTC equipment roamings take too much Internet resources, thereby influence the problem of normal non-MTC communication, realized by the communication data between the MTC server of MTC external interface functional entity processing MTC equipment and home network, thereby under the situation that guarantees external interface safety, situation at the roaming of MTC equipment, improve MTC communication at mobile communications network, as: the effect of the load balance in the 3GPP network.
Preferably, at step S1002, the MTC external interface functional entity of home network receives the MTC server and sends to before the third communication data of roaming MTC equipment, can also comprise following processing:
When (1) MTC equipment is attached to visited network, MTC equipment is registered to the MTC external interface functional entity of home network, the MTC external interface functional entity of home network receives the log-on message that comes from MTC equipment and preserves, wherein, the MTC external interface functional entity of home network can be set up routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this home network and visited network according to above-mentioned log-on message;
When (2) MTC equipment is attached to visited network, MTC equipment is registered to the MTC external interface functional entity of visited network, the MTC external interface functional entity of visited network receives the log-on message that comes from MTC equipment and preserves, wherein, the MTC external interface functional entity of visited network can be set up routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this visited network and home network according to above-mentioned log-on message.
In preferred implementation process, above-mentioned log-on message includes but not limited to that following information is one of at least:
(1) MTC equipment contracted user's identity information is as IMSI; And the identity information of MTC equipment, as IMEI.
(2) the MTC equipment network information of adhering to, as: network identity information.
In a preferred embodiment, when MTC equipment roams to visited network, need register at the MTC of visited network external interface functional entity, wherein, log-on message comprises: MTC equipment contracted user's identity information, MTC equipment identity information and visited network identity information.The MTC external interface functional entity of visited network can be set up routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this visited network and home network according to above-mentioned log-on message.MTC equipment roaming and when being attached to visited network, also need further to register at the MTC of home network external interface functional entity, wherein, log-on message comprises: the information of MTC equipment contracted user's identity information, MTC equipment identity information and visited network, as: the identity information of visited network.The MTC external interface functional entity of home network can be set up routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this home network and visited network according to above-mentioned log-on message, thereby realizes communicating by letter between MTC server and the MTC equipment.
For realizing supporting the roaming of MTC equipment, MTC external interface functional entity can be an independently MTC security gateway, realize the external interface function, the MTC server is carried out authentication and authorization, guarantee the fail safe of external interface communication, network topology, relaying or the processing signaling agreement that can be used for the shielding mobile communication system simultaneously.MTC external interface functional entity also can be made up of MTC security gateway entity and the external interface functional entity (MTC-IWF (MTC Security Gateway)) that comprises MTC security gateway function, realize the external interface function, the MTC server is carried out authentication and authorization, guarantee the fail safe of external interface communication, network topology, relaying or the processing signaling agreement that can be used for the shielding mobile communication system simultaneously.When MTC equipment roams to visited network, after MTC equipment is finished visited network and adhered to, need register by the MTC external interface functional entity in visited network, and need further the MTC external interface functional entity in home network to register.
In embodiments of the present invention, in order to support the roaming of MTC equipment, can set up the connection between different MTC external interface functional entitys in advance.For example, when MTC external interface functional entity is realized by the MTC security gateway, can carry out interconnected between the different MTC security gateways.When MTC external interface functional entity by MTC security gateway entity and comprise the external interface functional entity (MTC-IWF (MTC Security Gateway)) of MTC security gateway function when forming, carry out interconnectedly between the different security gateways, also carry out interconnected between the external interface functional entity that comprises MTC security gateway function that each are different.In addition, when MTC external interface functional entity by MTC security gateway entity and comprise the external interface entity (MTC-IWF (MTC Security Gateway)) of MTC security gateway function when forming, if desired, MTC security gateway and comprise also can be interconnected between the external interface entity of MTC security gateway function.
In addition, in embodiments of the present invention, need to carry out safe connection between the MT reconnaissance C external interface functional entity, that is, the communication between the MTC external interface functional entity need be carried out safeguard protection.In embodiments of the present invention, the fail safe of MTC external interface functional entity can be realized by the security mechanism of mobile communications network such as 3GPP server net.
Preferably, in step S1006, the MTC external interface functional entity of home network sends to MTC equipment with third communication data via the MTC external interface functional entity of visited network and may further include following processing: being connected of foundation in advance between the MTC external interface functional entity of the MTC external interface functional entity of the MTC external interface functional entity of home network by home network and visited network, third communication data are sent to MTC equipment via the MTC external interface entity of visited network.
Preferably, at step S1006, the MTC external interface functional entity of home network sends to third communication data after the MTC equipment via the MTC external interface functional entity of visited network, can also comprise following processing:
(1) the MTC external interface functional entity of visited network receives the four-way letter data that MTC equipment sends to the MTC server;
(2) the MTC external interface functional entity of visited network is routed to MTC external interface functional entity in the home network with the four-way letter data;
(3) the MTC external interface functional entity in the home network is routed to the MTC server with the four-way letter data.
Figure 11 is the structured flowchart according to the roaming communication system of the MTC equipment of the embodiment of the invention.As shown in figure 11, the roaming communication system of this MTC equipment mainly comprises: the MTC external interface functional entity 10 of visited network; The MTC external interface functional entity 10 of visited network may further include: first receiver module 100 is used for receiving first communication data that MTC equipment sends to the MTC server; First determination module 102 is used for the log-on message according to MTC equipment, determines the MTC external interface functional entity of the home network of MTC equipment; First routing module 104 is used for first communication data is routed to the MTC server via the MTC external interface functional entity of home network.
Adopted system as shown in figure 11, first receiver module 100 of the MTC external interface functional entity 10 of visited network receives first communication data that MTC equipment sends to the MTC server; First determination module 102 is determined the MTC external interface functional entity of the home network of MTC equipment according to the log-on message of MTC equipment; First routing module 104 is routed to the MTC server with first communication data via the MTC external interface functional entity of home network, solved in the correlation technique, the signaling and the communication data flow that cause when a large amount of MTC equipment roamings take too much Internet resources, thereby influence the problem of normal non-MTC communication, and then reached by the communication data between the MTC server of MTC external interface functional entity processing MTC equipment and home network, thereby improve MTC communication at mobile communications network, as: the effect of the load balance in the 3GPP network.
Preferably, as shown in figure 12, said system can also comprise: the MTC external interface functional entity 20 of home network; The MTC external interface functional entity 20 of this home network may further include: second receiver module 200, be used for when MTC equipment is attached to home network, and receive the log-on message and the preservation that come from MTC equipment; The MTC external interface functional entity 10 of visited network can further include: the 3rd receiver module 106, be used for when MTC equipment is attached to visited network, and receive the log-on message and the preservation that come from MTC equipment.
In preferred implementation process, above-mentioned log-on message can for but be not limited to following one of at least:
(1) identity information of MTC equipment contracted user's identity information and MTC equipment;
(2) the MTC equipment network information of adhering to, as: network identity information.
Preferably, as shown in figure 12, above-mentioned first routing module 104, be used between the MTC external interface functional entity of MTC external interface functional entity and home network by visited network being connected of foundation in advance, first communication data is routed to the MTC server via the MTC external interface functional entity of home network.
Preferably, as shown in figure 12, the MTC external interface functional entity 20 of home network can further include: the 4th receiver module 202 is used for receiving the second communication data that the MTC server sends to MTC equipment; Secondary route module 204 is for the MTC external interface functional entity that the second communication data is routed to visited network; The MTC external interface functional entity 10 of visited network can further include: Third Road is used for the second communication data are routed to MTC equipment by module 108.
In preferred implementation process, MT reconnaissance C external interface functional entity can for but be not limited to one of following:
(1) MTC security gateway;
(2) comprise the external interface entity of MTC security gateway function;
(3) MTC security gateway and the combination that comprises the external interface functional entity of MTC security gateway function.
Figure 13 is the structured flowchart according to the roaming communication system of the MTC equipment of the embodiment of the invention.As shown in figure 13, the roaming communication system of this MTC equipment mainly comprises: the MTC external interface functional entity 30 of home network; The MTC external interface functional entity 30 of this home network can comprise: the 5th receiver module 300 is used for receiving the third communication data that the MTC server sends to MTC equipment; Second determination module 302 is used for the log-on message according to MTC equipment, determines the MTC external interface functional entity of the current visited network that has roamed into of MTC equipment; The 4th routing module 304 is used for third communication data are sent to MTC equipment via the MTC external interface functional entity of visited network.
Adopted system as shown in figure 13, realized by the communication data between the MTC server of MTC external interface functional entity processing MTC equipment and home network, thereby under the situation that guarantees external interface safety, situation at the roaming of MTC equipment, improve MTC communication at mobile communications network, as: the load balance in the 3GPP network.
In a preferred embodiment, when MTC equipment roams to visited network, need register at the MTC of visited network external interface functional entity.Log-on message comprises MTC equipment contracted user's identity information, the MTC equipment identity information.Log-on message can further include the visited network identity information if desired.The MTC external interface functional entity of visited network can be set up routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this visited network and home network according to above-mentioned log-on message.MTC equipment roaming and when being attached to visited network also needs further to register at the MTC of home network external interface functional entity.Log-on message comprises MTC equipment contracted user's identity information, MTC equipment identity information, and the identity information of the information of visited network such as visited network.The MTC external interface functional entity of home network can be set up routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this home network and visited network according to above-mentioned log-on message, thereby realizes communicating by letter between MTC server and the MTC equipment.
Preferably, as shown in figure 14, said system can also comprise: the MTC external interface functional entity 40 of visited network; The MTC external interface functional entity 40 of visited network can comprise: the 6th receiver module 400 is used for receiving the four-way letter data that MTC equipment sends to the MTC server; The 5th routing module 402 is for the MTC external interface functional entity that the four-way letter data is routed to home network; The MTC external interface functional entity 30 of home network can also comprise: the 6th routing module 306 is used for the four-way letter data is routed to the MTC server.
Figure 15 is the roaming communication system schematic of only using the MTC equipment of a MTC external interface functional entity according to each communication network of the embodiment of the invention.As shown in figure 15, this system can comprise: (1) MTC external interface functional entity, MTC external interface functional entity can be an independently MTC security gateway, realize the external interface function, the MTC server is carried out authentication and authorization, guarantee the fail safe of external interface communication, can be used for network topology, relaying or the processing signaling agreement of shielding mobile communication system simultaneously.(2) MTC server, the MTC server is used for providing MTC related service or business.(3) GGSN/PGW, Gateway GPRS Support Node/packet data gateway.(4) HLR/HSS, attaching position register/ownership subscription data server.SGSN/MME, GPRS serving GPRS support node/mobile management entity.(5) SMS-SC/IP-SM-GW, short message service center.In this system architecture, MTC external interface function is by independently MTC security gateway realization, and different MTC security gateways carry out interconnected to support the roaming of MTC equipment.
Figure 16 is the roaming communication system schematic of using the MTC equipment of two MTC external interface functional entitys according to each communication network of the embodiment of the invention.As shown in figure 16, this system comprises: (1) MTC external interface functional entity, formed by MTC security gateway entity and the external interface functional entity (MTC-IWF (MTC Security Gateway)) that comprises MTC security gateway function, realize the external interface function, the MTC server is carried out authentication and authorization, guarantee the fail safe of external interface communication, can be used for network topology, relaying or the processing signaling agreement of shielding mobile communication system simultaneously.(2) MTC server, the MTC server is used for providing MTC related service or business.(3) GGSN/PGW, Gateway GPRS Support Node/packet data gateway.(4) HLR/HSS, attaching position register/ownership subscription data server.(5) SGSN/MME, GPRS serving GPRS support node/mobile management entity.(6) SMS-SC/IP-SM-GW, short message service center.In this system architecture, MTC external interface function is realized by MTC security gateway and the external interface functional entity that comprises MTC security gateway function, between the different MTC security gateways, and carry out interconnected to support the roaming of MTC equipment between the different external interface functional entitys that comprises MTC security gateway function.Do not exist between MTC security gateway and the external interface functional entity that comprises MTC security gateway function and be connected.Certainly, in each communication network, can select arbitrarily by MTC external interface functional entity or by MTC security gateway entity with comprise communication data that processing sends via Gi/SGi in the external interface functional entity of MTC security gateway function.But, need guarantee that the MTC external interface entity that each communication network is selected at last is consistent.
Roaming communication system architecture diagram by above-mentioned Figure 15 and MTC equipment shown in Figure 16, at mobile communications network, as: in the 3GPP network, MME can be different with the sign that interpersonal non-MTC communicates by letter according to the MTC equipment mark, and then to part MTC communication or all MTC communication do not process, and the MTC that will not process communication is transferred to MTC external interface entity and is handled, thereby alleviate the load when handling MTC communication on the MME simultaneously and communicating by letter with non-MTC, and then improve communicate by letter load balance in the 3GPP network of MTC.
From above description, as can be seen, the present invention has realized following technique effect: can realize the support to MTC equipment roaming communication, and guarantee the external interface fail safe of MTC devices communicating, and improve MTC communication at mobile communications network, and as: the load balance in the 3GPP network.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (20)

1. the roaming communication method of a machine class communication MTC equipment is characterized in that, comprising:
The MTC external interface functional entity of visited network receives first communication data that MTC equipment sends to the MTC server;
The MTC external interface functional entity of described visited network is determined the MTC external interface functional entity of the home network of described MTC equipment according to the log-on message of described MTC equipment;
The MTC external interface functional entity of described visited network is routed to described MTC server with described first communication data via the MTC external interface functional entity of described home network.
2. method according to claim 1 is characterized in that, before the MTC of described visited network external interface functional entity receives described first communication data that described MTC equipment sends to described MTC server, also comprises:
When described MTC equipment is attached to described visited network, the MTC external interface functional entity of described home network receives the log-on message that comes from described MTC equipment and preserves, wherein, the MTC external interface functional entity of described home network is set up the routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this home network and described visited network according to the log-on message of described MTC equipment;
When described MTC equipment is attached to described visited network, the MTC external interface functional entity of described visited network receives the log-on message that comes from described MTC equipment and preserves, wherein, the MTC external interface functional entity of described visited network is set up the routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this visited network and described home network according to the log-on message of described MTC equipment.
3. method according to claim 1 is characterized in that, the MTC external interface functional entity of described visited network is routed to described MTC server with described first communication data via the MTC external interface functional entity of described home network and comprises:
That sets up in advance between the MTC external interface functional entity of the MTC external interface functional entity of the MTC external interface functional entity of described visited network by described visited network and described home network is connected, and described first communication data is routed to described MTC server via the MTC external interface functional entity of described home network.
4. method according to claim 1 is characterized in that, the MTC external interface functional entity of described visited network is routed to described first communication data after the described MTC server via the MTC external interface functional entity of described home network, also comprises:
The MTC external interface functional entity of described home network receives the second communication data that described MTC server sends to described MTC equipment;
The MTC external interface functional entity of described home network is determined the MTC external interface functional entity of the current visited network that adheres to of described MTC equipment according to the log-on message of described MTC equipment;
The MTC external interface functional entity of described home network is routed to MTC external interface functional entity in the described visited network with described second communication data;
MTC external interface functional entity in the described visited network sends to described MTC equipment with described second communication data.
5. according to each described method in the claim 1 to 4, it is characterized in that described MTC external interface functional entity is one of following:
The MTC security gateway;
The external interface functional entity that comprises MTC security gateway function;
MTC security gateway and the combination that comprises the external interface functional entity of MTC security gateway function.
6. according to each described method in the claim 1 to 4, it is characterized in that, described log-on message be following one of at least:
Described MTC equipment contracted user's identity information and the identity information of described MTC equipment;
The network of network identity information that described MTC equipment adheres to.
7. the roaming communication method of a machine class communication MTC equipment is characterized in that, comprising:
The MTC external interface functional entity of home network receives the third communication data that the MTC server sends to MTC equipment;
The MTC external interface functional entity of described home network is determined the MTC external interface functional entity of the current visited network that has roamed into of described MTC equipment according to the log-on message of described MTC equipment;
The MTC external interface functional entity of described home network sends to described MTC equipment with described third communication data via the MTC external interface functional entity of described visited network.
8. method according to claim 7 is characterized in that, before the MTC of described home network external interface functional entity receives the described third communication data that described MTC server sends to described MTC equipment, also comprises:
When described MTC equipment is attached to described visited network, the MTC external interface functional entity of described home network receives the log-on message that comes from described MTC equipment and preserves, wherein, the MTC external interface functional entity of described home network is set up the routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this home network and described visited network according to the log-on message of described MTC equipment;
When described MTC equipment is attached to described visited network, the MTC external interface functional entity of described visited network receives the log-on message that comes from described MTC equipment and preserves, wherein, the MTC external interface functional entity of described visited network is set up the routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this visited network and described home network according to the log-on message of described MTC equipment.
9. method according to claim 7 is characterized in that, the MTC external interface functional entity of described home network sends to described MTC equipment with described third communication data via the MTC external interface functional entity of described visited network and comprises:
That sets up in advance between the MTC external interface functional entity of the MTC external interface functional entity of the MTC external interface functional entity of described home network by described home network and described visited network is connected, and described third communication data are sent to described MTC equipment via the MTC external interface functional entity of described visited network.
10. method according to claim 7 is characterized in that, after the MTC of described home network external interface functional entity sends to described MTC equipment with described third communication data via the MTC external interface functional entity of described visited network, also comprises:
The MTC external interface functional entity of described visited network receives the four-way letter data that described MTC equipment sends to described MTC server;
The MTC external interface functional entity of described visited network is routed to MTC external interface functional entity in the described home network with described four-way letter data;
MTC external interface functional entity in the described home network is routed to described MTC server with described four-way letter data.
11., it is characterized in that described MTC external interface functional entity is one of following according to each described method in the claim 7 to 10:
The MTC security gateway;
The external interface functional entity that comprises MTC security gateway function;
MTC security gateway and the combination that comprises the external interface functional entity of MTC security gateway function.
12. according to each described method in the claim 7 to 10, it is characterized in that, described log-on message be following one of at least:
Described MTC equipment contracted user's identity information and the identity information of described MTC equipment;
The network of network identity information that described MTC equipment adheres to.
13. the roaming communication system of a machine class communication MTC equipment is characterized in that described system comprises: the MTC external interface functional entity of visited network;
The MTC external interface functional entity of described visited network comprises:
First receiver module is used for receiving first communication data that MTC equipment sends to the MTC server;
First determination module is for the MTC external interface functional entity of determining the home network of described MTC equipment according to the log-on message of described MTC equipment;
First routing module is used for described first communication data is routed to described MTC server via the MTC external interface functional entity of described home network.
14. system according to claim 13 is characterized in that, described system also comprises: the MTC external interface functional entity of described home network;
The MTC external interface functional entity of described home network comprises:
Second receiver module, be used for when described MTC equipment is attached to described visited network, reception comes from the log-on message of described MTC equipment and preserves, wherein, the MTC external interface functional entity of described home network is set up the routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this home network and described visited network according to the log-on message of described MTC equipment;
The MTC external interface functional entity of described visited network also comprises:
The 3rd receiver module, be used for when described MTC equipment is attached to described visited network, reception comes from the log-on message of described MTC equipment and preserves, wherein, the MTC external interface functional entity of described visited network is set up the routing relation between the MTC external interface functional entity of the MTC external interface functional entity of this visited network and described home network according to the log-on message of described MTC equipment.
15. system according to claim 13 is characterized in that,
Described first routing module, be used between the MTC external interface functional entity of MTC external interface functional entity and described home network by described visited network being connected of foundation in advance, described first communication data is routed to described MTC server via the MTC external interface functional entity of described home network.
16. system according to claim 13 is characterized in that,
The MTC external interface functional entity of described home network also comprises:
The 4th receiver module is used for receiving the second communication data that described MTC server sends to described MTC equipment;
The secondary route module is for the MTC external interface functional entity that described second communication data is routed to described visited network;
The MTC external interface functional entity of described visited network also comprises:
Third Road is used for described second communication data are routed to described MTC equipment by module.
17., it is characterized in that described MTC external interface functional entity is one of following according to each described system in the claim 13 to 16:
The MTC security gateway;
The external interface functional entity that comprises MTC security gateway function;
MTC security gateway and the combination that comprises the external interface functional entity of MTC security gateway function.
18. according to each described system in the claim 13 to 16, it is characterized in that, described log-on message be following one of at least:
Described MTC equipment contracted user's identity information and the identity information of described MTC equipment;
The network of network identity information that described MTC equipment adheres to.
19. the roaming communication system of a machine class communication MTC equipment is characterized in that described system comprises: the MTC external interface functional entity of home network;
The MTC external interface functional entity of described home network comprises:
The 5th receiver module is used for receiving the third communication data that the MTC server sends to MTC equipment;
Second determination module is for the MTC external interface functional entity of determining the current visited network that has roamed into of described MTC equipment according to the log-on message of described MTC equipment;
The 4th routing module is used for described third communication data are sent to described MTC equipment via the MTC external interface functional entity of described visited network.
20. system according to claim 19 is characterized in that, described system also comprises: the MTC external interface functional entity of described visited network;
The MTC external interface functional entity of described visited network comprises:
The 6th receiver module is used for receiving the four-way letter data that described MTC equipment sends to described MTC server;
The 5th routing module is for the MTC external interface functional entity that described four-way letter data is routed to described home network;
The MTC external interface functional entity of described home network also comprises:
The 6th routing module is used for described four-way letter data is routed to described MTC server.
CN201210050051.6A 2012-02-29 2012-02-29 The roaming communication method and system of MTC device Expired - Fee Related CN103298030B (en)

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