CN103857061A - Method and device for activating packet data protocol (PDP) context transmission - Google Patents
Method and device for activating packet data protocol (PDP) context transmission Download PDFInfo
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Abstract
The invention provides a method and device for activating packet data protocol (PDP) context transmission and belongs to the communication field. The method comprises the following steps that: when a PDP context of a target terminal is not activated, a GGSN obtains an instruction for a network-side platform to request to activate the PDP context of the target terminal; the GGSN determines that a GPRS where the target terminal is located supports an SGSN according to the instruction; and the GGSN interacts with the SGSN, and the PDP context of the target terminal is activated. With the method and device for activating the PDP context transmission of the invention adopted, the GGSN reversely activates the PDP context of the target terminal, and therefore, an additional related information center is not needed to be purchased for a whole system, and cost can be reduced, and processes can be simplified.
Description
Technical field
The present invention relates to wireless communication field, a kind of method and device that activates PDP Context transmission is particularly provided.
Background technology
At present, the communication between internet-of-things terminal and business platform is generally in the following way:
Platform of internet of things is had in operator, business platform accesses platform of internet of things according to specific protocol, the message between terminal and business platform is through platform of internet of things transfer, the message of terminal and platform of internet of things is by GPRS(general packet radio service technology General Packet Radio Service) carrying, the communication of platform of internet of things and business platform generally adopts Web Service(network service) mode.
If business platform can not access platform of internet of things according to specific protocol, terminal and business platform can directly be carried and be carried out communication by GPRS.Terminal and platform of internet of things or the business platform precondition based on GPRS carrying communication is the PDP(packet data protocol must between terminal and platform of internet of things or business platform with activation) context, terminal has been assigned with IP address, and the IP address that platform of internet of things or business platform can utilize terminal sends data to terminal for destination.
Such as: platform of internet of things or business platform need initiatively to send related remote control command to internet-of-things terminal, as remote control terminal restarts, arranges terminal relevant configured parameter, requires terminal to carry out software upgrading etc.At this moment will carry out after PDP context activation terminal, platform of internet of things or business platform could be set up GPRS transfer of data with terminal.
Current Activiation method is: platform of internet of things or business platform send a short message to terminal, require terminal to carry out PDP context activation.
Afterwards, terminal is according to the requirement of short message, to SGSN(serving GPRS support node) send and activate PDP Context request message (mainly comprising PDP type, APN, the parameters such as the service quality of requirement);
SGSN has parsed the gateway of GGSN(support node from APN) address, be that asked PDP Context creates a Tunnel Identifier, and send and create PDP Context request message and (comprise PDP type to GGSN, pdp address, APN, the service quality of deciding through consultation, tunnel ID etc.).
GGSN utilizes the information that SGSN provides to determine outside PDN, and monthly dynamics address starts charging, Limited service quality etc.If can meet the service quality of deciding through consultation, return and create PDP Context response message (comprising tunnel ID, pdp address PDP config option, the service quality of deciding through consultation, charging ID etc.) to SGSN.
SGSN receives the establishment PDP Context response of GGSN, through relevant treatment, returns and activates PDP Context receipt message (comprising PDP type, pdp address, the service quality of deciding through consultation, PDP config option etc.) to terminal.
Now with regard to the built route erecting between terminal and GGSN, and start charging, can carry out grouped data transmission.Between internet-of-things terminal and platform of internet of things or business platform, just can normally carry out data has transmitted.
If but without short message, but Adoption Network side Reverse Activity PDP Context, at this moment all terminals all need to adopt static IP, platform of internet of things or business platform adopt terminal static IP, as destination address, packet is issued to GGSN, GGSN finds associated international mobile subscriber identity according to this IP address, initiates reverse pdp context activation by GGSN.After PDP Context is activated, GGSN packet is delivered to terminal again but said method has following several shortcoming:
In terminal PDP context activation situation, nearly all Internet of Things application is all carried out information carrying by GPRS, this just need to build short message service center in network, it initiates PDP context activation to send short signaling to terminal, need to increase so unavoidably extra corollary equipment and lower deployment cost, simultaneously operation flow more complicated.
If carry out reverse PDP context activation by network, need to distribute static ip address to each internet-of-things terminal, this IP address will can be shone upon with international mobile subscriber identity in GGSN, and cannot be multiplexing, take very large, and the previous bottleneck problem of order is exactly IPV4 address wretched insufficiency in Internet of Things application, cannot give the distinctive static ip address of each terminal distribution one.In addition, also need in GGSN, set up the mapping relations of IP address of terminal and international mobile subscriber identity address, network operation complexity.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method and device that activates PDP Context transmission, can realize by the PDP Context of GGSN Reverse Activity target terminal and transmitting, thereby make whole system need not additionally purchase relevant information center, reduce costs simple flow.
For solving the problems of the technologies described above, embodiments of the invention provide a kind of method that activates PDP Context transmission, are applied to Gateway GPRS Support Node GGSN, in the time of the un-activation of target terminal PDP Context, comprise the steps:
Described GGSN obtains the indication of the packet data protocol PDP Context of network side platform request activation target terminal;
Described GGSN, according to described indication, determines the GPRS serving GPRS support node SGSN at described target terminal place;
Described GGSN and described SGSN are mutual, activate the PDP Context of described target terminal.
Wherein, described indication comprises: the international mobile subscriber identity IMSI of target terminal or mobile subscriber ISDN number MSISDN, access point APN, PDP type and pdp address;
Described GGSN, according to described indication, determines that the GPRS serving GPRS support node SGSN at described target terminal place is specially: described GGSN, according to the IMSI of described target terminal or MSISDN, determines the GPRS serving GPRS support node SGSN at described target terminal place;
Described GGSN and described SGSN are mutual, and the PDP Context that activates described target terminal is specially: described GGSN is according to described APN, PDP type and pdp address, mutual with described SGSN, activate the PDP Context of described target terminal.
Wherein, described GGSN, according to the IMSI of described target terminal or MSISDN, determines that the step of the GPRS serving GPRS support node SGSN at described target terminal place comprises:
Described GGSN, according to the IMSI of described target terminal or MSISDN, sends message to attaching position register HLR, makes described HLR return to the address of described target terminal place SGSN; Or
Described GGSN, according to the IMSI of described target terminal or MSISDN, sends message to attaching position register HLR by SGSN, makes described HLR return to the address of described target terminal place SGSN.
Wherein, described GGSN is according to described APN, PDP type and pdp address, mutual with described SGSN, and the step that activates the PDP Context of described target terminal comprises:
Described GGSN sends a notification message to described target terminal place SGSN, described notification message carries IMSI, APN, PDP type and the pdp address of described target terminal, makes described SGSN send a PDP context activation request to described target terminal according to described notification message;
Described GGSN receives described target terminal that described SGSN returns and activates according to described PDP context activation request the response of PDP Context.
Wherein, the PDP Context of described target terminal also comprises after being activated:
Described GGSN is that described target terminal distributes an IP address of terminal, and by described IP address of terminal informing network side platform.
Wherein, described in, be designated as: described GGSN receives the activation request message of the PDP Context of the target terminal of network side platform transmission;
The step that described GGSN obtains the indication of the PDP Context of network side platform request activation target terminal comprises:
Described GGSN receives the activation request message of the PDP Context of the described target terminal of network side platform transmission;
Described also comprising after described IP address of terminal informing network side platform step:
Described GGSN receives, and forwards described network side platform and send business datum according to described IP address of terminal to described target terminal.
Wherein, described in, be designated as: include described GGSN and receive the packet of network side platform to the business datum of target terminal transmission;
The step that described GGSN obtains the indication of the PDP Context of network side platform request activation target terminal comprises:
Described GGSN receives described network side platform according to the IP address of GGSN, the packet that includes described business datum of transmission;
Described also comprising after described IP address of terminal informing network side platform step:
Described in sending to target terminal according to IP address of terminal, described GGSN comprises the packet of described business datum.
Embodiments of the invention also provide a kind of device that activates PDP Context transmission, comprising:
Acquisition module, for when the un-activation of target terminal PDP Context, obtains the indication of the packet data protocol PDP Context transmission that network side platform request activates target terminal;
Search module, for according to described indication, determines the GPRS serving GPRS support node SGSN at described target terminal place;
Active module, for mutual with described SGSN, activates the PDP Context of described target terminal.
Wherein, described indication comprises: the international mobile subscriber identity IMSI of target terminal or mobile subscriber international ISDN num MSISDN, access point APN, PDP type and pdp address;
Described search module specifically for: according to the IMSI of described target terminal or MSISDN, determine the GPRS serving GPRS support node SGSN at described target terminal place;
Described active module specifically for: according to described APN, PDP type and pdp address, mutual with described SGSN, activate the PDP Context of described target terminal.
Wherein, described search module is further used for: according to the IMSI of described target terminal or MSISDN, send message to attaching position register HLR, make described HLR return to the address of described target terminal place SGSN; Or
According to the IMSI of described target terminal or MSISDN, send message to attaching position register HLR by SGSN, make described HLR return to the address of described target terminal place SGSN.
Wherein, described active module is further used for: to described target terminal, place SGSN sends a notification message, described notification message carries IMSI, APN, PDP type and the pdp address of described target terminal, makes described SGSN send a PDP context activation request to described target terminal according to described notification message;
Receive described target terminal that described SGSN returns activates PDP Context response according to described PDP context activation request.
Wherein, said apparatus also comprises:
Business sending module, after being activated at the PDP Context of described target terminal, for described target terminal distributes an IP address of terminal, and by described IP address of terminal informing network side platform.
Wherein, described in, be designated as: described GGSN receives the activation request message of the PDP Context of the target terminal of network side platform transmission;
Described acquisition module is specifically for the activation request message of PDP Context that receives the described target terminal that network side platform sends;
Described business sending module also for: receive, and forward described network side platform and send business datum according to described IP address of terminal to described target terminal.
Wherein, described in, be designated as: include described GGSN and receive the packet of network side platform to the business datum of target terminal transmission;
Described acquisition module specifically for: receive described network side platform according to the IP address of GGSN, the packet that includes described business datum of transmission;
Described business sending module also for: described in sending to target terminal according to IP address of terminal, comprise the packet of described business datum.
The beneficial effect of technique scheme of the present invention is as follows:
In such scheme, activate the indication of the packet data protocol PDP Context of target terminal by obtaining network side platform request, find the GPRS serving GPRS support node SGSN at target terminal place according to described indication, mutual with SGSN afterwards, make SGSN activate the PDP Context of described target terminal, thereby network side platform send data to target terminal.And in prior art, need to set up an information platform by network side platform, first send activation data transmission request (generally adopting note to inform) to terminal, terminal searching SGSN afterwards, and request is sent to SGSN, make the transmission of SGSN activation data.Contrast prior art this method, this method is without sending request information to terminal, thereby makes whole system need not additionally purchase relevant information center, reduces costs simple flow.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the method for activation PDP Context transmission of the present invention;
Fig. 2 is the flow chart of the implementation one of method in the embodiment of the present invention 1;
Fig. 3 is the flow chart of the implementation two of method in the embodiment of the present invention 1;
Fig. 4 is the structural representation of the device of activation PDP Context transmission of the present invention.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
As shown in Figure 1, embodiments of the invention provide a kind of method that activates PDP Context transmission, are applied to Gateway GPRS Support Node GGSN, in the time that target terminal un-activation PDP Context transmits, comprise the steps:
S1, described GGSN obtains the indication of the packet data protocol PDP Context of network side platform request activation target terminal;
S2, described GGSN, according to described indication, determines the GPRS serving GPRS support node SGSN at described target terminal place;
S3, described GGSN and described SGSN are mutual, activate the PDP Context of described target terminal.
In this embodiment, first GGSN obtains network side platform request and activates the PDP(packet data protocol of target terminal) indication of context transfer, find the GPRS serving GPRS support node SGSN at target terminal place according to described indication, mutual with SGSN afterwards, make SGSN activate the PDP Context of described target terminal, thereby network side platform and target terminal are realized business transmission.Compared with prior art, method of the present invention is without sending request information to target terminal, thereby makes whole system need not additionally purchase relevant information center, reduces costs simple flow.
Said method is described in detail below:
As shown in Figure 2, < implementation one >
When step 1. network side platform need to carry out transfer of data with target terminal, find that target terminal PDP Context does not activate, send requesting terminal and carry out the message of PDP context activation to GGSN, in message, carry IMSI number, APN, PDP type, pdp address etc., the pdp address that will activate target terminal and be made as Dynamic Acquisition;
Step 2.GGSN sends MAP message " Send Routing Info for GPRS " to HLR, carries IMSI number; If HLR judges this request can provide, it returns to " Send Routing Info for GPRS Ack " message to GGSN, and message comprises the information such as IMSI, SGSN address.Conventionally implementation method has two kinds:
If GGSN energy and HLR Direct Communication, GGSN directly obtains the SGSN at target terminal place to HLR;
If GGSN can not with HLR Direct Communication, GGSN obtains the SGSN at target terminal place to HLR by SGSN;
Step 3.GGSN gets after the SGSN at target terminal place, and GGSN will send a PDU notification request message " PDU Notification Request " to this SGSN, comprises IMSI, PDP type, pdp address, APN etc. in message; SGSN returns to PDU push-notification-answer message " PDU Notification Response " to GGSN, confirms that its meeting request target terminal activate the PDP Context that this pdp address shows;
Step 4.SGSN sends a PDP context activation request message to target terminal, and request activates the PDP Context of specifying, and comprises PDP type, pdp address, the information such as APN in message;
After step 5.PDP context is activated, GGSN is terminal distribution IP address of terminal;
Step 6.GGSN returns to the result (being mainly IP address of terminal) of Reverse Activity PDP Context to platform of internet of things or business platform.
Step 7. is after PDP context activation, and network side platform sends to target terminal by GGSN by business datum according to IP address of terminal.
As shown in Figure 3, < implementation two >
Step 1 '. when network side platform need to send message to target terminal, find that terminal PDP Context does not activate, this message is encapsulated in a self-defined IP packet, destination address is GGSN IP address, self-defined head comprises IMSI, APN, PDP type, the information such as pdp address, issue GGSN by this IP packet;
Step 2 ' .GGSN receives when destination address is the packet of own IP address, untie IP bag, get IMSI and the APN that will send to target terminal at self-defined head, PDP type, the information such as pdp address, GGSN sends MAP message " Send Routing Info for GPRS " to HLR, carries IMSI number.The information such as it returns to " Send Routing Info for GPRS Ack " message to GGSN, and message comprises IMSI, SGSN address if judging this request, HLR can be provided.Conventionally implementation method has two kinds:
If GGSN energy and HLR Direct Communication, GGSN directly obtains the SGSN at target terminal place to HLR;
If GGSN can not with HLR Direct Communication, GGSN obtains the SGSN at target terminal place to HLR by SGSN;
Step 3 ' .GGSN gets after the SGSN at target terminal place, and GGSN will send a PDU notification request message " PDU Notification Request " to this SGSN, comprises IMSI, PDP type, pdp address, APN etc. in message.SGSN returns to PDU push-notification-answer message " PDU Notification Response " to GGSN, confirms that its meeting request target terminal activate the PDP Context that this pdp address shows;
Step 4 ' .SGSN sends a PDP context activation request message to target terminal, and request activates the PDP Context of specifying, and comprises PDP type, pdp address, the information such as APN in message;
Step 5 ' .PDP context is activated by PDP context activation flow process, and GGSN is target terminal distributing IP address;
Step 6 ' .GGSN use to target terminal distribute IP address replace IP packet rs destination IP address, remove self-defined extended head, then by this Packet Generation to target terminal;
Further, this embodiment can also comprise:
Step 7 ' .GGSN is by the IP address notification network side platform that is terminal distribution, so that network side platform communicates by this IP address and terminal; In this embodiment, step 6 ' and step 7 ' order and be not construed as limiting, GGSN also can be first by IP address of terminal informing network side platform, then delivers the packet that comprises described business datum to target terminal
The GGSN of the present embodiment is directly mutual with SGSN, makes SGSN activate the PDP Context of target terminal, without sending note request activation to terminal again, thereby makes whole system need not additionally purchase relevant information center, reduces costs simple flow.And the present embodiment is activating after PDP Context, be that target terminal distributes an IP address of terminal, this IP address of terminal need not form mapping with IMSI, thus adopt dynamic IP addressing, thus have provisionally, do not take IPV4 address resource.Further, the data of the business that the packet that network side platform sends to GGSN sends containing oriented target terminal, GGSN be can be directly behind target terminal distributing terminals IP address by this Packet Generation to target terminal, make target terminal reading out data content, thus simple flow.
As shown in Figure 4, embodiments of the invention also provide a kind of device that activates PDP Context transmission, are specifically as follows GGSN(Gateway GPRS Support Node), comprising:
Acquisition module, the indication of transmitting for obtaining the packet data protocol PDP Context of network side platform request activation target terminal;
Search module, for according to described indication, determines the GPRS serving GPRS support node SGSN at described target terminal place;
Active module, for mutual with described SGSN, activates the PDP Context of described target terminal.
Wherein, described indication comprises: the international mobile subscriber identity IMSI of target terminal or mobile subscriber international ISDN num MSISDN, access point APN, PDP type and pdp address and state GGSN and receive the activation request message of PDP Context of the target terminal that network side platform sends;
Acquisition module receives after the activation request message of PDP Context of the described target terminal of network side platform transmission, search module is according to the IMSI/MSISDN of described target terminal, send message to attaching position register HLR, make described HLR return to the address of described target terminal place SGSN; Or according to the IMSI of described target terminal, send message to attaching position register HLR by SGSN, make described HLR return to the address of described target terminal place SGSN.
Obtaining behind the address of target terminal place SGSN, active module sends a notification message to described target terminal place SGSN, described notification message carries IMSI, APN, PDP type and the pdp address of described target terminal, makes described SGSN send a PDP context activation request to described target terminal according to described notification message; And receive described target terminal that SGSN returns and activate according to described PDP context activation request the response of PDP Context.
Wherein, GGSN also comprises a business sending module, activate according to described PDP context activation request after the response of PDP Context in receiving target terminal, learn that PDP Context is activated, business sending module is that described target terminal distributes an IP address of terminal, and described IP address of terminal is returned to network side platform, and make described network side platform according to this IP address of terminal, send the business datum of network side platform to described target terminal by GGSN.
In addition, in the time that sending business datum, target terminal can adopt following manner:
The packet that network side platform request activates the packet data protocol PDP Context transmission of target terminal also includes the packet of network side platform to the business datum of target terminal transmission;
In this case, business sending module specifically also for: after target terminal PDP is activated, described GGSN is that described target terminal distributes an IP address of terminal, and according to IP address of terminal to target terminal deliveries data.
The GGSN of the present embodiment is directly mutual with SGSN, makes SGSN activate the PDP Context of target terminal, without sending note request activation to terminal again, thereby makes whole system need not additionally purchase relevant information center, reduces costs simple flow.And the present embodiment is to activate after PDP Context, is that target terminal distributes an IP address, and this IP address need not form mapping with IMSI, thus dynamic IP addressing adopted, thus have provisionally, do not take IPV4 address resource.Further, the data of the business that the packet that network side platform sends to GGSN sends containing oriented target terminal, GGSN be can be directly behind target terminal distributing IP address by this Packet Generation to target terminal, make target terminal reading out data content, thus simple flow.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (14)
1. a method that activates PDP Context transmission, is applied to Gateway GPRS Support Node GGSN, it is characterized in that, in the time of the un-activation of target terminal PDP Context, comprises the steps:
Described GGSN obtains the indication of the packet data protocol PDP Context of network side platform request activation target terminal;
Described GGSN, according to described indication, determines the GPRS serving GPRS support node SGSN at described target terminal place;
Described GGSN and described SGSN are mutual, activate the PDP Context of described target terminal.
2. the method for activation PDP Context transmission according to claim 1, is characterized in that,
Described indication comprises: the international mobile subscriber identity IMSI of target terminal or mobile subscriber ISDN number MSISDN, access point APN, PDP type and pdp address;
Described GGSN, according to described indication, determines that the GPRS serving GPRS support node SGSN at described target terminal place is specially: described GGSN, according to the IMSI of described target terminal or MSISDN, determines the GPRS serving GPRS support node SGSN at described target terminal place;
Described GGSN and described SGSN are mutual, and the PDP Context that activates described target terminal is specially: described GGSN is according to described APN, PDP type and pdp address, mutual with described SGSN, activate the PDP Context of described target terminal.
3. the method for activation PDP Context transmission according to claim 2, is characterized in that, described GGSN, according to the IMSI of described target terminal or MSISDN, determines that the step of the GPRS serving GPRS support node SGSN at described target terminal place comprises:
Described GGSN, according to the IMSI of described target terminal or MSISDN, sends message to attaching position register HLR, makes described HLR return to the address of described target terminal place SGSN; Or
Described GGSN, according to the IMSI of described target terminal or MSISDN, sends message to attaching position register HLR by SGSN, makes described HLR return to the address of described target terminal place SGSN.
4. according to the method for the activation PDP Context transmission described in claim 2 or 3, it is characterized in that, described GGSN is according to described APN, PDP type and pdp address, mutual with described SGSN, and the step that activates the PDP Context of described target terminal comprises:
Described GGSN sends a notification message to described target terminal place SGSN, described notification message carries IMSI, APN, PDP type and the pdp address of described target terminal, makes described SGSN send a PDP context activation request to described target terminal according to described notification message;
Described GGSN receives described target terminal that described SGSN returns and activates according to described PDP context activation request the response of PDP Context.
5. the method for activation PDP Context transmission according to claim 4, is characterized in that, after the PDP Context of described target terminal is activated, also comprises:
Described GGSN is that described target terminal distributes an IP address of terminal, and by described IP address of terminal informing network side platform.
6. the method for activation PDP Context according to claim 5 transmission, is characterized in that, described in be designated as: described GGSN receives the activation request message of the PDP Context of the target terminal that network side platform sends;
The step that described GGSN obtains the indication of the PDP Context of network side platform request activation target terminal comprises:
Described GGSN receives the activation request message of the PDP Context of the described target terminal of network side platform transmission;
Described also comprising after described IP address of terminal informing network side platform step:
Described GGSN receives, and forwards described network side platform and send business datum according to described IP address of terminal to described target terminal.
7. the method for activation PDP Context according to claim 5 transmission, is characterized in that, described in be designated as: the packet that includes described GGSN and receive the business datum that network side platform sends to target terminal;
The step that described GGSN obtains the indication of the PDP Context of network side platform request activation target terminal comprises:
Described GGSN receives described network side platform according to the IP address of GGSN, the packet that includes described business datum of transmission;
Described also comprising after described IP address of terminal informing network side platform step:
Described in sending to target terminal according to IP address of terminal, described GGSN comprises the packet of described business datum.
8. a device that activates PDP Context transmission, is characterized in that, comprising:
Acquisition module, for when the un-activation of target terminal PDP Context, obtains the indication of the packet data protocol PDP Context transmission that network side platform request activates target terminal;
Search module, for according to described indication, determines the GPRS serving GPRS support node SGSN at described target terminal place;
Active module, for mutual with described SGSN, activates the PDP Context of described target terminal.
9. device according to claim 8, is characterized in that, described indication comprises: the international mobile subscriber identity IMSI of target terminal or mobile subscriber international ISDN num MSISDN, access point APN, PDP type and pdp address;
Described search module specifically for: according to the IMSI of described target terminal or MSISDN, determine the GPRS serving GPRS support node SGSN at described target terminal place;
Described active module specifically for: according to described APN, PDP type and pdp address, mutual with described SGSN, activate the PDP Context of described target terminal.
10. device according to claim 9, it is characterized in that, described search module is further used for: according to the IMSI of described target terminal or MSISDN, send message to attaching position register HLR, make described HLR return to the address of described target terminal place SGSN; Or
According to the IMSI of described target terminal or MSISDN, send message to attaching position register HLR by SGSN, make described HLR return to the address of described target terminal place SGSN.
11. according to the device described in claim 9 or 10, it is characterized in that, described active module is further used for: to described target terminal, place SGSN sends a notification message, described notification message carries IMSI, APN, PDP type and the pdp address of described target terminal, makes described SGSN send a PDP context activation request to described target terminal according to described notification message;
Receive described target terminal that described SGSN returns activates PDP Context response according to described PDP context activation request.
12. devices according to claim 11, is characterized in that, also comprise:
Business sending module, after being activated at the PDP Context of described target terminal, for described target terminal distributes an IP address of terminal, and by described IP address of terminal informing network side platform.
13. devices according to claim 12, is characterized in that, described in be designated as: described GGSN receives the activation request message of the PDP Context of the target terminal that network side platform sends;
Described acquisition module is specifically for the activation request message of PDP Context that receives the described target terminal that network side platform sends;
Described business sending module also for: receive, and forward described network side platform and send business datum according to described IP address of terminal to described target terminal.
14. devices according to claim 12, is characterized in that, described in be designated as: the packet that includes described GGSN and receive the business datum that network side platform sends to target terminal;
Described acquisition module specifically for: receive described network side platform according to the IP address of GGSN, the packet that includes described business datum of transmission;
Described business sending module also for: described in sending to target terminal according to IP address of terminal, comprise the packet of described business datum.
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