CN101998684B - Method, system and equipment for accessing terminal - Google Patents
Method, system and equipment for accessing terminal Download PDFInfo
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- CN101998684B CN101998684B CN200910091576.2A CN200910091576A CN101998684B CN 101998684 B CN101998684 B CN 101998684B CN 200910091576 A CN200910091576 A CN 200910091576A CN 101998684 B CN101998684 B CN 101998684B
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Abstract
The invention discloses a method, a system and equipment for accessing a terminal. A direct or indirect corresponding relationship between a fixed IP address and a dynamic IP address of the terminal is established, and when the terminal is accessed, the dynamic IP address of the terminal in the currently accessed network is acquired by utilizing the known fixed IP address of the terminal, so the terminal is accessed, and the aim that group client members access one another by adopting the fixed IP address outside the local area network is fulfilled.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method, system and equipment of access terminal.
Background technology
Virtual Private Network (Virtual Private Network, VPN) be that a kind of member of group customer is by the technology of wireless network access group customer internal lan, in the time that member need to access internal lan, initiate PDP Context (PDP Context) activation request to GGSN (GGSN), and in PDP Context activation request, carry corresponding VPN information.GGSN is that member distributes the IP address (can be that static ip address can be also dynamic IP addressing) that belongs to the special VPN address field of this group customer according to the APN information receiving.After PDP Context has activated, member can turn transmitting IP packet by GGSN, to realize the access to group customer internal lan.
Along with the development of business, some group customer wish to realize the exchanging visit demand between inner member by special VPN technologies, and fixed ip address mode is exactly the communication mode proposing in order to realize the exchanging visit between inner member.
The general fixed ip address mode adopting of existing network is:
In each member's of group customer attaching position register (HLR), be recorded as the fixed ip address that this member distributes, in the time that member accesses group customer local area network (LAN), GGSN is that this member distributes the IP address of recording in corresponding HLR.When a certain member wishes to exchange visits, determine other members' fixed ip address according to mobile terminal identification between other members, and then utilize definite fixed ip address and other members directly to set up data to be connected.
Under the mode of above-mentioned fixed ip address, the member of group customer can realize directly and exchanging visits according to other members' fixed ip address after accessing the special VPN of this group, but in the time that group customer member accesses another VPN, because group customer member does not know the IP address of other members in other VPN, thereby cannot realize the exchanging visit between member.In addition, under above-mentioned fixed ip address mode, can only realize by a GGSN as the terminal of the special VPN of this group provides service, have the risk of Single Point of Faliure; Meanwhile, the finite capacity of a GGSN, is difficult to meet the requirement of extensive group customer; In addition, in fixed ip address mode, HLR need to support fixed ip address distribution function, there is the function that records the fixing IP of member, and part HLR does not support fixed ip address distribution function in existing network, in order to realize above-mentioned fixed ip address mode at the whole network, need to carry out upgrading to the HLR in existing network, obtain the HLR that performance is higher, increased the cost that the inner member of group customer exchanges visits.
Summary of the invention
The embodiment of the present invention provides a kind of method, system and equipment of access terminal, when the inner member of solution group customer accesses another VPN, and the problem that group customer member cannot adopt fixed ip address to exchange visits.
A method for access terminal, described method comprises:
Receive the first data access request for accessing first terminal, described the first data access request comprises the fixed ip address of first terminal;
According to the fixed ip address of described first terminal, determine the dynamic IP addressing of corresponding first terminal;
According to the dynamic IP addressing of first terminal, send described the first data access request to corresponding first terminal;
Wherein: the fixed ip address of first terminal is the IP address of first terminal in first network segment, and the dynamic IP addressing of first terminal is the IP address of first terminal in second network segment, and first network segment and second network segment are not overlapping.
A kind of communication system, described communication system comprises:
Access request transmitting apparatus, for sending the first data access request of access first terminal, described the first data access request comprises the fixed ip address of first terminal;
Routing forwarding equipment, for receiving described the first data access request, according to the fixed ip address of described first terminal, determine the dynamic IP addressing of corresponding first terminal, and, according to the dynamic IP addressing of first terminal, send described the first data access request to corresponding first terminal;
Wherein: the fixed ip address of first terminal is the IP address of first terminal in first network segment, and the dynamic IP addressing of first terminal is the IP address of first terminal in second network segment, and first network segment and second network segment are not overlapping.
A kind of routing forwarding equipment, described equipment comprises:
Request receiving module, for receiving the data access request of access first terminal, described data access request comprises the fixed ip address of first terminal;
Address conversion module, for according to the fixed ip address of described first terminal, determines the dynamic IP addressing of corresponding first terminal;
Data transmission blocks, for according to the dynamic IP addressing of first terminal, sends described data access request to corresponding first terminal;
Wherein: the fixed ip address of first terminal is the IP address of first terminal in first network segment, and the dynamic IP addressing of first terminal is the IP address of first terminal in second network segment, and first network segment and second network segment are not overlapping.
The embodiment of the present invention is by setting up the corresponding relation between fixed ip address and the dynamic IP addressing of terminal, in the time that terminal is conducted interviews, utilize the fixed ip address of known terminal to obtain the dynamic IP addressing in the current access network of terminal, and then realize the access to terminal, reach the object that group customer member adopts fixed ip address to exchange visits in the time of another VPN of access.
Accompanying drawing explanation
Fig. 1 is the steps flow chart schematic diagram of realizing terminal mutual visit in the embodiment of the present invention one;
Fig. 2 is the equipment connection schematic diagram of realizing terminal mutual visit in the embodiment of the present invention two;
Fig. 3 is the steps flow chart schematic diagram of realizing terminal mutual visit in the embodiment of the present invention three;
Fig. 4 is communication system architecture schematic diagram in the embodiment of the present invention four;
Fig. 5 is route forwarding unit structural representation in the embodiment of the present invention five.
Embodiment
In order to realize the object of the invention, the embodiment of the present invention proposes the exchanging visit mode between the inner member of a kind of group customer, for the default fixed ip address corresponding with terminal iidentification of group customer inside each member's group customer local area network (LAN), represent that this member uses default fixed ip address in group customer local area network (LAN) always.In the time that member leaves other VPN in group customer local area network (LAN) and access GPRS network, one in multiple GGSN will be distributed a dynamic IP addressing in this VPN for understanding this member.Member's fixed ip address, corresponding relation between dynamic IP addressing and member's mark can be kept in routing forwarding equipment, in the time that a member of group customer inside wishes to exchange visits with another member, a described member can utilize the dynamic IP of self to initiate data access request to another member's fixing IP, routing forwarding equipment is according to fixed ip address, corresponding relation between dynamic IP addressing and member's mark, find out the current dynamic IP addressing of another member, and then data access request is forwarded to another member, realize the exchanging visit between member.
Below in conjunction with Figure of description, the embodiment of the present invention is described in detail.
Embodiment mono-:
As shown in Figure 1, for realizing the step schematic diagram of terminal mutual visit in the embodiment of the present invention one, suppose that the terminal relating in various embodiments of the present invention is the terminal with network accessibility, if access GPRS network, and the mobile terminal of accessing special VPN by GPRS network; The routing forwarding equipment relating in various embodiments of the present invention can be can with two network segments in network element carry out interconnected, and there is the equipment of data message forwarding function, meanwhile, the routing forwarding equipment dynamic IP addressing that also to have from GGSN real-time synchronization be terminal distribution and the corresponding relation of terminal iidentification.Routing forwarding equipment can be the network element such as switch, router, can be also the logical block that depends on the network elements such as GGSN.
The method of embodiment mono-comprises the following steps:
Step 101: routing forwarding equipment receives the first data access request, described the first data access request comprises the fixed ip address of first terminal.
The first data access request in the present embodiment is the request message that represents that hope conducts interviews to first terminal.
In the present embodiment one, the fixed ip address of first terminal can be the IP address in first network segment, this IP address assignment to terminal after no longer change, as the IP address of first terminal in group customer local area network (LAN); The dynamic IP addressing of first terminal can be the IP address in second network segment, the Random assignment in the time that terminal accesses the second network segment map network of this address, the IP address of distributing while accessing another VPN as first terminal.There is not lap in first network segment and second network segment that in various embodiments of the present invention, relate to.
In the present embodiment, the equipment of initiating the first data access request can be the second terminal under same group customer with first terminal, and the second terminal is current accesses same VPN with first terminal, that is to say, the fixed ip address of the second terminal and the definition of dynamic IP addressing are identical with first terminal.The equipment of initiating the first data access request can also be server, as is positioned at the server of group customer local area network (LAN), or other can know the server of terminal fixed ip address.
Step 102: routing forwarding equipment, according to the fixed ip address of described first terminal, is determined the dynamic IP addressing of corresponding first terminal.
Because current first terminal accesses the second network segment map network, therefore, can not directly realize the access to first terminal by the fixed ip address of first terminal, and need to conduct interviews according to the current actual dynamic IP addressing using of first terminal, particularly, determine that according to the fixed ip address of first terminal the mode of the dynamic IP addressing of first terminal includes but not limited to following two kinds of modes:
First kind of way:
Routing forwarding equipment is according to the corresponding relation of fixed ip address and terminal iidentification, determine the terminal iidentification corresponding to fixed ip address of described first terminal, and, according to the corresponding relation of dynamic IP addressing and terminal iidentification, determine the dynamic IP addressing of the first terminal that the terminal iidentification of described first terminal is corresponding.
Under this mode, the fixed ip address using unique terminal iidentification as first terminal and dynamic IP addressing be related to tie, indirectly obtain the dynamic IP addressing of first terminal.
The second way:
Routing forwarding equipment obtains after the dynamic IP addressing of distributing for first terminal, directly set up the corresponding relation between dynamic IP addressing and fixed ip address, in the time that first terminal repeatedly accesses network corresponding to second network segment, when the each access of routing forwarding equipment basis, be the dynamic IP addressing that first terminal distributes, the corresponding relation between fixed ip address and the dynamic IP addressing of renewal first terminal.
Routing forwarding equipment, according to the corresponding relation between fixed ip address and the dynamic IP addressing of the first terminal of having set up, is determined the dynamic IP addressing of first terminal.
Step 103: if the first data access request is initiated by the second terminal, and the dynamic IP addressing that comprises the second terminal in the first data access request, routing forwarding equipment, according to the dynamic IP addressing of the second terminal, is determined the terminal iidentification of described the second terminal.
Step 104: routing forwarding equipment is determined the fixed ip address of the second terminal that the terminal iidentification of described the second terminal is corresponding.
Step 105: routing forwarding equipment is revised as the dynamic IP addressing of the second terminal in described the first data access request the fixed ip address of the second terminal.
If routing forwarding equipment is preserved the dynamic IP addressing of terminal and the corresponding relation of fixed ip address according to first kind of way in step 102, can determine according to the mode in step 103 and step 104 fixed ip address of the second terminal, and the source address in the first data access request is revised as to the fixed ip address of the second terminal by the dynamic IP addressing of the second terminal, the object of doing is like this:
Because the dynamic IP addressing of the second terminal is the Random assignment while accessing network corresponding to second network segment of the second terminal, therefore, first terminal is also known the terminal that dynamic IP addressing of the second terminal does not refer to, and also cannot directly access the second terminal by the dynamic IP addressing of the second terminal.To this, in the present embodiment, the fixed ip address of the second terminal is carried in the first data access request, make first terminal can determine access initiator's identity, also can pay a return visit according to the fixed ip address of the second terminal.
Step 106: routing forwarding equipment, according to the dynamic IP addressing of first terminal, sends described the first data access request to corresponding first terminal.
Because the dynamic IP addressing of first terminal is the routing address of the current reality of first terminal, therefore, can the first data access request be routed to first terminal according to the dynamic IP addressing of first terminal.
Step 107: first terminal receives after the first data access request, and the message wherein carrying is processed.
Step 108: first terminal sends the second data access request to routing forwarding equipment, the fixed ip address that comprises the second terminal in described the second data access request.
The second data access request in the present embodiment is the request message that represents that hope conducts interviews to the second terminal.
In step 103～step 105, routing forwarding equipment is carried at the fixed ip address of the second terminal in the first data access request and sends to first terminal, realize the access of the second terminal to first terminal, in the time that first terminal wishes to access the second terminal, can, according to the similar fashion of step 101, send the second data access request to routing forwarding equipment.
Step 109: routing forwarding equipment is determined the dynamic IP addressing of the second terminal that the fixed ip address of described the second terminal is corresponding.
In this step, can determine according to two kinds of implementations in step 102 dynamic IP addressing of the second terminal.
Step 110: routing forwarding equipment, according to the dynamic IP addressing of the second terminal, sends described the second data access request to the second terminal of correspondence.
Now, realize the access of first terminal to the second terminal, namely realized the exchanging visit of first terminal and the second terminal.
By being the mode of terminal distribution dynamic IP addressing in the embodiment of the present invention one, reach the object that group customer member adopts fixed ip address to exchange visits in the time of another VPN of access, and, under the mode of the present embodiment, the dynamic IP addressing of terminal in another VPN of access is terminal distribution by the multiple GGSN in network, fixed ip address is also specified in advance, having avoided in prior art is the process that a large amount of inner members of group customer distributes fixed ip address by a GGSN, alleviate the operating pressure of GGSN, in the time that breaking down, this GGSN also there will not be inner member's communication disruption, in addition, the fixed ip address of terminal does not need pre-stored in HLR, has reduced the requirement to HLR ability, has reduced the cost of realizing of terminal mutual visit.
Embodiment bis-:
The embodiment of the present invention two illustrates the implementation procedure of embodiment mono-by instantiation.Suppose in embodiment bis-that terminal A and terminal B are the members of same group customer inside, as shown in Figure 2, first network segment distributing for group customer is 192.168.*.*, wherein, the fixed ip address of terminal A is 192.168.1.1, and the fixed ip address of terminal B is 192.168.1.2; A VPN in the current access GPRS network of terminal A and terminal B, its second network segment is 10.1.*.*, and wherein, the dynamic IP addressing of terminal A is 10.1.1.1, and the dynamic IP addressing of terminal B is 10.1.1.2.The flow process that terminal A and terminal B exchange visits is as follows:
When the first step: terminal A access GPRS network, send PDP Context request message to SGSN.
Second step: SGSN, according to VPN selective rule, is chosen as terminal A in the multiple GGSN from GPRS network the GGSN of service is provided.
The PDP Context request message that the 3rd step: SGSN initiates to the GGSN transmitting terminal A selecting.
The 4th step: the GGSN that receives described PDP Context request message is terminal A monthly dynamics IP address 10.1.1.1.
Terminal B also can carry out above four steps, is terminal B monthly dynamics IP address 10.1.1.2 by GGSN.
The 5th step: terminal A initiates the first data access request to GGSN.
In the present embodiment, routing forwarding equipment is interconnected by special VPN and GGSN, be connected across between first network segment and second network segment, the network element in corporate intranet corresponding to first network segment will send to routing forwarding equipment by enterprise firewall for the fixed ip address that terminal A and terminal B specify; Each GGSN in the second network segment map network will send to routing forwarding equipment for the dynamic IP addressing of terminal A and terminal B distribution.
When terminal A wishes access terminal B, terminal A can only be known the dynamic IP addressing of self and the fixed ip address of terminal B, therefore, and in the first data access request that terminal A sends, destination address is filled in the fixed ip address of terminal B, and source address is filled in the dynamic IP addressing of terminal A.
The form of the first data access request can be as shown in table 1.
Table 1
The first data access request is transmitted to routing forwarding equipment by the 6th step: GGSN.
The 7th step: routing forwarding equipment is determined the terminal iidentification of accessed terminal according to destination address.
The terminal iidentification here can be the information of unique expression terminal, as phone number etc.
The 8th step: routing forwarding equipment is determined the current dynamic IP addressing in GPRS network of corresponding terminal B according to described terminal iidentification, and the destination address in table 1 being revised as to the dynamic IP addressing of the terminal B determining, amended the first data access request form of destination address is as shown in table 2.
Table 2
The 9th step: for terminal B can be exchanged visits with terminal A, routing forwarding equipment is determined the terminal iidentification of terminal A according to source address, and then determines the fixed ip address of terminal A.
The tenth step: routing forwarding equipment is the fixed ip address of terminal A by the source address modification in table 2, the first data access request form after source address modification is as shown in table 3.
Table 3
The 11 step: the first data access request is sent to terminal B by routing forwarding equipment, realizes the access of terminal A to terminal B.
The 12 step: if terminal B wishes access terminal A, can, according to the mode of the 5th step to the 11 steps, send the second data access request to terminal A.
Embodiment tri-:
The process of exchanging visits between the process of exchanging visits between the server of terminal and group customer local area network (LAN) inside and terminal is similar, and server can find terminal to conduct interviews by the fixing IP of terminal, and as shown in Figure 3, concrete access process is as follows:
Step 301: server is to routing forwarding equipment sending data access request, and described data access request comprises the fixed ip address of terminal.
Step 302: routing forwarding equipment, according to the fixed ip address of described terminal, is determined the dynamic IP addressing of corresponding terminal.
The fixed ip address of terminal is the IP address of terminal in first network segment, the dynamic IP addressing of terminal is the IP address of terminal in second network segment, server can be the network element in the first network segment map network, can be also other servers that can know the fixing IP of terminal.
Definite mode of the fixed ip address of terminal and dynamic IP addressing is identical with the mode of dynamic IP addressing with definite first terminal or the fixed ip address of the second terminal in embodiment mono-, embodiment bis-.
Step 303: routing forwarding equipment, according to the dynamic IP addressing of terminal, sends described data access request to corresponding terminal.
By the scheme of the embodiment of the present invention three, server can be realized the access to terminal by the fixed ip address of terminal, and then can control terminal easily.
Embodiment tetra-:
The embodiment of the present invention four provides a kind of communication system, as shown in Figure 4, described communication system comprises access request transmitting apparatus 11, routing forwarding equipment 12 and first terminal 13, wherein: access request transmitting apparatus 11 is for sending the first data access request, and described the first data access request comprises the fixed ip address of first terminal 13; Routing forwarding equipment 12 is for receiving described the first data access request, according to the fixed ip address of described first terminal 13, determine the dynamic IP addressing of corresponding first terminal 13, and, according to the dynamic IP addressing of first terminal 13, send described the first data access request to corresponding first terminal 13; Wherein: the fixed ip address of first terminal is the IP address of first terminal in first network segment, and the dynamic IP addressing of first terminal is the IP address of first terminal in second network segment, and first network segment and second network segment are not overlapping.
Further, routing forwarding equipment 12 is also for according to the corresponding relation of fixed ip address and terminal iidentification, determine the terminal iidentification corresponding to fixed ip address of described first terminal 13, and, according to the corresponding relation of dynamic IP addressing and terminal iidentification, determine the dynamic IP addressing of the first terminal that the terminal iidentification of described first terminal 13 is corresponding.
Described access request transmitting apparatus 11 is the second terminal or server.
Routing forwarding equipment 12 is also in the time that access request transmitting apparatus is the second terminal, according to the dynamic IP addressing of the second terminal in the first data access request, determine the terminal iidentification of described the second terminal, and, determine the fixed ip address of the second terminal that the terminal iidentification of described the second terminal is corresponding, and the dynamic IP addressing of the second terminal in described the first data access request is revised as to the fixed ip address of the second terminal, and the first data access request is sent to first terminal 13, wherein: the fixed ip address of the second terminal is the IP address of the second terminal in first network segment, the dynamic IP addressing of the second terminal is the IP address of the second terminal in second network segment.
First terminal 13 is for sending the second data access request, the fixed ip address that comprises the second terminal in described the second data access request; Routing forwarding equipment 12 is also for receiving described the second request of data, determine the dynamic IP addressing of the second terminal that the fixed ip address of described the second terminal is corresponding, and according to the dynamic IP addressing of the second terminal, send described the second data access request to the second terminal of correspondence.
Embodiment five:
The embodiment of the present invention five also provides a kind of routing forwarding equipment, as shown in Figure 5, described equipment comprises: request receiving module 21, address conversion module 22 and data transmission blocks 23, wherein: request receiving module 21 is for receiving data access request, and described data access request comprises the fixed ip address of first terminal; Address conversion module 22, for according to the fixed ip address of described first terminal, is determined the dynamic IP addressing of corresponding first terminal; Data transmission blocks 23, for according to the dynamic IP addressing of first terminal, sends described data access request to corresponding first terminal; Wherein: the fixed ip address of first terminal is the IP address of first terminal in first network segment, the dynamic IP addressing of first terminal is the IP address of first terminal in second network segment.
Described address conversion module 22 comprises that first determines submodule 31 and second definite submodule 32, wherein: first definite submodule 31, for according to the corresponding relation of fixed ip address and terminal iidentification, is determined the terminal iidentification corresponding to fixed ip address of described first terminal; Second determines that submodule 32 is for according to the corresponding relation of dynamic IP addressing and terminal iidentification, determines the dynamic IP addressing of the first terminal that the terminal iidentification of described first terminal is corresponding.
Described second determines that submodule 32 also when comprising the dynamic IP addressing of the second terminal in data access request, according to the dynamic IP addressing of the second terminal, determines the terminal iidentification of described the second terminal; Described first determines that submodule 31 is also for determining the fixed ip address corresponding to terminal iidentification of the second terminal, and the dynamic IP addressing of the second terminal in described data access request is revised as to the fixed ip address of the second terminal.Data transmission blocks 23 sends the amended data access request in address, and wherein: the fixed ip address of the second terminal is the IP address of the second terminal in first network segment, the dynamic IP addressing of the second terminal is the IP address of the second terminal in second network segment.
The method, system and the equipment that provide by the embodiment of the present invention, realized the object that group customer member adopts fixed ip address to exchange visits outside local area network (LAN), and the real-time monitoring to group customer member of server in group customer local area network (LAN); And, under the mode of the present embodiment, dynamic IP addressing is terminal distribution by the multiple GGSN in network, fixed ip address is also specified in advance, having avoided a GGSN in group's network is the process that a large amount of inside members distributes fixed ip address, alleviate the operating pressure of GGSN, in the time that this GGSN breaks down, also there will not be inner member's communication disruption; In addition, the fixed ip address of terminal does not need pre-stored in HLR, has reduced the requirement to HLR ability, has reduced the cost of realizing of terminal mutual visit.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (13)
1. a method for access terminal, is characterized in that, described method comprises:
Receive the first data access request for accessing first terminal, described the first data access request comprises the fixed ip address of first terminal;
According to the fixed ip address of described first terminal, determine the dynamic IP addressing of corresponding first terminal;
According to the dynamic IP addressing of first terminal, send described the first data access request to corresponding first terminal;
Wherein: the fixed ip address of first terminal is the IP address of first terminal in first network segment, the dynamic IP addressing of first terminal is the IP address of first terminal in second network segment, first network segment and second network segment are not overlapping, and the dynamic IP addressing of first terminal is distributed by following steps:
GPRS serving GPRS support node SGSN receives after the PDP Context request message of requesting terminal transmission, is chosen as the GGSN of requesting terminal service from multiple GGSN GGSN, and described PDP Context request message is sent to the GGSN of selection;
The GGSN that receives described PDP Context request message is monthly dynamics IP address, requesting terminal;
Described request terminal is first terminal.
2. the method for claim 1, is characterized in that, determines the dynamic IP addressing of corresponding first terminal according to the fixed ip address of described first terminal, comprising:
According to the corresponding relation of fixed ip address and terminal iidentification, determine the terminal iidentification corresponding to fixed ip address of described first terminal, and,
According to the corresponding relation of dynamic IP addressing and terminal iidentification, determine the dynamic IP addressing of the terminal that the terminal iidentification of described first terminal is corresponding.
3. method as claimed in claim 2, is characterized in that, described the first data access request is to be initiated by the second terminal, and in described the first data access request, also comprises the dynamic IP addressing of the second terminal;
After determining the dynamic IP addressing of first terminal, and before the first data access request is sent to first terminal, described method also comprises:
According to the dynamic IP addressing of the second terminal, determine the terminal iidentification of described the second terminal, and, determine the fixed ip address corresponding to terminal iidentification of the second terminal;
The dynamic IP addressing of the second terminal in described the first data access request is revised as to the fixed ip address of the second terminal, and the first data access request is sent to first terminal;
Wherein: the fixed ip address of the second terminal is the IP address of the second terminal in first network segment, the dynamic IP addressing of the second terminal is the IP address of the second terminal in second network segment.
4. method as claimed in claim 3, is characterized in that, after the first data access request is sent to first terminal, described method also comprises:
Receive the second data access request that first terminal sends, the fixed ip address that comprises the second terminal in described the second data access request;
Determine the dynamic IP addressing of the second terminal that the fixed ip address of described the second terminal is corresponding;
According to the dynamic IP addressing of the second terminal, send described the second data access request to the second terminal of correspondence.
5. method as claimed in claim 3, it is characterized in that, the method is applied to general grouped wireless network G PRS, global mobile communication network G SM, time division synchronization code multi-address access network TD-SCDMA, wireless code division multiple address access network WCDMA or CDMA 2000 CDMA2000;
The dynamic IP addressing of the second terminal is distributed by following steps:
GPRS serving GPRS support node SGSN receives after the PDP Context request message of requesting terminal transmission, is chosen as the GGSN of requesting terminal service from multiple GGSN GGSN, and described PDP Context request message is sent to the GGSN of selection;
The GGSN that receives described PDP Context request message is monthly dynamics IP address, requesting terminal;
Described request terminal is the second terminal.
6. a communication system, is characterized in that, described communication system comprises:
Access request transmitting apparatus, for sending the first data access request of access first terminal, described the first data access request comprises the fixed ip address of first terminal;
Routing forwarding equipment, for receiving described the first data access request, according to the fixed ip address of described first terminal, determine the dynamic IP addressing of corresponding first terminal, and, according to the dynamic IP addressing of first terminal, send described the first data access request to corresponding first terminal;
Wherein: the fixed ip address of first terminal is the IP address of first terminal in first network segment, the dynamic IP addressing of first terminal is the IP address of first terminal in second network segment, first network segment and second network segment are not overlapping, and the dynamic IP addressing of first terminal is distributed by following steps:
GPRS serving GPRS support node SGSN receives after the PDP Context request message of requesting terminal transmission, is chosen as the GGSN of requesting terminal service from multiple GGSN GGSN, and described PDP Context request message is sent to the GGSN of selection;
The GGSN that receives described PDP Context request message is monthly dynamics IP address, requesting terminal;
Described request terminal is first terminal.
7. communication system as claimed in claim 6, is characterized in that,
Routing forwarding equipment, also for according to the corresponding relation of fixed ip address and terminal iidentification, determine the terminal iidentification corresponding to fixed ip address of described first terminal, and, according to the corresponding relation of dynamic IP addressing and terminal iidentification, determine the dynamic IP addressing of the first terminal that the terminal iidentification of described first terminal is corresponding.
8. communication system as claimed in claim 7, is characterized in that,
Described access request transmitting apparatus is the second terminal or server.
9. communication system as claimed in claim 8, is characterized in that,
Routing forwarding equipment, also in the time that access request transmitting apparatus is the second terminal, according to the dynamic IP addressing of the second terminal in the first data access request, determine the terminal iidentification of described the second terminal, and, determine the fixed ip address of the second terminal that the terminal iidentification of described the second terminal is corresponding, and the dynamic IP addressing of the second terminal in described the first data access request is revised as to the fixed ip address of the second terminal, and the first data access request is sent to first terminal;
Wherein: the fixed ip address of the second terminal is the IP address of the second terminal in first network segment, the dynamic IP addressing of the second terminal is the IP address of the second terminal in second network segment.
10. communication system as claimed in claim 9, is characterized in that,
First terminal, for sending the second data access request, the fixed ip address that comprises the second terminal in described the second data access request;
Routing forwarding equipment, also for receiving described the second request of data, determine the dynamic IP addressing of the second terminal that the fixed ip address of described the second terminal is corresponding, and according to the dynamic IP addressing of the second terminal, send described the second data access request to the second terminal of correspondence.
11. 1 kinds of routing forwarding equipment, is characterized in that, described equipment comprises:
Request receiving module, for receiving the data access request of access first terminal, described data access request comprises the fixed ip address of first terminal;
Address conversion module, for according to the fixed ip address of described first terminal, determines the dynamic IP addressing of corresponding first terminal;
Data transmission blocks, for according to the dynamic IP addressing of first terminal, sends described data access request to corresponding first terminal;
Wherein: the fixed ip address of first terminal is the IP address of first terminal in first network segment, the dynamic IP addressing of first terminal is the IP address of first terminal in second network segment, first network segment and second network segment are not overlapping, and the dynamic IP addressing of first terminal is distributed by following steps:
GPRS serving GPRS support node SGSN receives after the PDP Context request message of requesting terminal transmission, is chosen as the GGSN of requesting terminal service from multiple GGSN GGSN, and described PDP Context request message is sent to the GGSN of selection;
The GGSN that receives described PDP Context request message is monthly dynamics IP address, requesting terminal;
Described request terminal is first terminal.
12. equipment as claimed in claim 11, is characterized in that, described address conversion module comprises:
First determines submodule, for according to the corresponding relation of fixed ip address and terminal iidentification, determines the terminal iidentification corresponding to fixed ip address of described first terminal;
Second determines submodule, for according to the corresponding relation of dynamic IP addressing and terminal iidentification, determines the dynamic IP addressing of the first terminal that the terminal iidentification of described first terminal is corresponding.
13. equipment as claimed in claim 12, is characterized in that,
Described second determines submodule, also in the time that the first data access request comprises the dynamic IP addressing of the second terminal, according to the dynamic IP addressing of the second terminal, determines the terminal iidentification of described the second terminal;
Described first determines submodule, also for determining the fixed ip address corresponding to terminal iidentification of the second terminal, and the dynamic IP addressing of the second terminal in described the first data access request is revised as to the fixed ip address of the second terminal;
Wherein: the fixed ip address of the second terminal is the IP address of the second terminal in first network segment, the dynamic IP addressing of the second terminal is the IP address of the second terminal in second network segment.
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| CN1855925A (en) * | 2005-04-29 | 2006-11-01 | 华为技术有限公司 | Method for PPP access terminal obtaining carrier server address |
| CN101282232A (en) * | 2007-04-05 | 2008-10-08 | 华为技术有限公司 | Method, equipment and system for managing far-end apparatus |
| CN101369959A (en) * | 2007-08-14 | 2009-02-18 | 中兴通讯股份有限公司 | Network address conversion traversing method supporting point-to-point service |
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| CN1855925A (en) * | 2005-04-29 | 2006-11-01 | 华为技术有限公司 | Method for PPP access terminal obtaining carrier server address |
| CN101282232A (en) * | 2007-04-05 | 2008-10-08 | 华为技术有限公司 | Method, equipment and system for managing far-end apparatus |
| CN101369959A (en) * | 2007-08-14 | 2009-02-18 | 中兴通讯股份有限公司 | Network address conversion traversing method supporting point-to-point service |
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