CN1306771C

CN1306771C - Method of realizing virtual special network among several business control nodes

Info

Publication number: CN1306771C
Application number: CNB02125219XA
Authority: CN
Inventors: 俞前
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2002-07-16
Filing date: 2002-07-16
Publication date: 2007-03-21
Anticipated expiration: 2022-07-16
Also published as: CN1469599A

Abstract

The present invention relates to a method for realizing a virtual private network between a plurality of service control nodes. The method comprises: first, number segment allocation information is determined for a plurality of service control nodes which need to realize a virtual private network, the number segment allocation information of all service control nodes in the virtual private network is stored in each of the service control nodes, and the number segment allocation information comprises service control node identification information and a number segment range corresponding to the service control node identification information; then, users in the virtual private network can carry out communication services in the virtual private network through the service control nodes contracted with the users. The present invention solves the problems existing in the situation that operators of all provinces provide nationwide virtual private network services in existing modes of operation according to provinces, independent accounting and management, so that the operators of all provinces can conveniently provide more nationwide virtual private network services for group users, and mobile communication operators can strive for more users through better service to obtain better income.

Description

Realize the method for Virtual Private Network between a plurality of business control nodes

Technical field

The present invention relates to communication technical field, relate in particular to the method that realizes VPN (Virtual Private Network) in a kind of mobile communication system between a plurality of business control nodes.

Background technology

At present, Mobile Virtual Private Network is a kind of new business that mobile communication network operator provides for group user, this private network is to utilize the mobile radio communication resource to provide a private network in logic for group user, realize that group user can carry out miscellaneous service in Virtual Private Network, for group user provides great convenience to use, the management of mobile radio communication.Typical intelligent network architecture can be divided into the structure of nationwide Virtual Private Network and the structure of each province's Virtual Private Network in the existing mobile communication system, as shown in Figure 1 and Figure 2.And at present at intelligent wireless on the net by the mobile virtual private network business is provided, solved the problem that Mobile Virtual Private Network is provided in single SCP (business control nodes) scope, but single SCP only can satisfy the corresponding business demand inside the province, but can't satisfy the nationwide user's of large group requirement.

For the nationwide user of large group that need commence business in China, present mode is to provide professional by the unified SCP in the whole nation, as shown in Figure 1, unified being triggered on this SCP of the MSC/SSP of various places (mobile switching centre/operation exchange node) handled.But in the mobile communications network of reality, each operator is that unit runs, adjusts and manages with the province, class of business that the each province carries out and the speed of carrying out are also all different, if provide professional by the unified SCP in the whole nation, actual provide professional in difficulty more, therefore, carry out relatively difficulty of nationwide communication service at present.

Summary of the invention

The purpose of this invention is to provide the method that realizes Virtual Private Network between a kind of a plurality of business control nodes, can utilize existing mobile radio communication that the nationwide centrex service is provided, for group user provides preferable service.

The object of the present invention is achieved like this: realize the method for Virtual Private Network between a kind of a plurality of business control nodes, comprising:

A, determine to need realize a plurality of business control nodes of Virtual Private Network, and determine section distributing information for each business control nodes;

B, on each business control nodes the section distributing information of all business control nodes in the in store Virtual Private Network;

Between the user of c, Virtual Private Network by in Virtual Private Network, communicating with signatory separately business control nodes.

Described section distributing information is: business control nodes identification information and number segment limit corresponding with it.

Described step b also comprises the processing to the business control nodes of new adding Virtual Private Network:

B1, the section distributing information that will need to add the business control nodes of Virtual Private Network make an addition on each business control nodes of Virtual Private Network;

B2, the section distributing information of each business control nodes of Virtual Private Network is stored on the initiate business control nodes.

Described step c comprises:

When the user of c1, Virtual Private Network initiates communication service, be triggered on the business control nodes of contracting with this user by this communication service of naming a person for a particular job of the mobile switching centre at this user place or operation exchange;

C2, business control nodes judge with the user and initiate whether the business control nodes that the corresponding called subscriber of communication service contracts is this locality;

C3 is if local business control nodes, then directly sets up between the user who initiates communication service and called subscriber and communicates by letter;

C4, if not the business control nodes of this locality, the CAMEL-Subscription-Information by local service Control Node inquiry called subscriber then, and communicating by letter between the user who in Virtual Private Network, sets up the initiation communication service according to Query Result and called subscriber.

The business control nodes that the called called subscriber of inquiry among the described step c4 contracts is based on that the executable operations Execute of intelligent network access protocol INAP realizes.

Described step c4 comprises:

C41, the user who initiates communication service, promptly the calling subscriber sends the Execute signaling to called subscriber's business control nodes, request called subscriber's user profile;

C42, called subscriber's business control nodes return called user information by the Execute signaling;

C43, calling subscriber's business control nodes is determined type of call according to the user's who receives user profile, to determine the charging regulation of caller;

C44, connection calling subscriber and called subscriber realize the communication between caller and called users;

C45, communication service finish, and calling subscriber's business control nodes discharges this calling.

By technique scheme as can be seen, the invention solves each province operator provides the nationwide centrex service existing problem existing by economizing under operation, independent accounting and the way to manage, makes each province operator that the service of nationwide Virtual Private Network can be provided for group user easily.The nationwide virtual private network that the present invention has used the SCP interconnection technique to realize, the operator of each province does not need to change existing form of operation and administration and corresponding communication network structure, just can carry out the Virtual Private Network that laterally cooperation realizes the nationwide with the operator of other provinces; And, be same as the present invention and can use the SCP interconnection technique to carry out distributed management, therefore be not subjected to the capacity limit of single SCP, arbitrarily the ownership.Simultaneously, the present invention realizes that existing Virtual Private Network can allow qualified each province operator to add at any time, overcome the inconsistent influence of each province's communication network situation to realizing that the nationwide Virtual Private Network is produced, the province that promptly opens earlier can begin earlier to realize interconnection that all the other each province also can join in the interconnection after satisfying the requirements.

Description of drawings

Fig. 1 is the structure chart of existing nationwide Virtual Private Network;

Fig. 2 is the structure chart of existing each province Virtual Private Network;

Fig. 3 is the structure chart of nationwide provided by the invention Virtual Private Network;

Fig. 4 is the specific implementation of the present invention flow chart.

Embodiment

The invention provides the method that in mobile communication system, realizes Virtual Private Network between a plurality of Control Node, the present invention for the each province be realize on the unit existing mobile communications network runing, adjust and manage nationwide VPN provide may, thereby make mobile communications network under the situation that less input, provide better service for group user.

Utilize service groups web frame that the present invention realizes nationwide VPN as shown in Figure 3, the present invention is on original agreement basis, be on the cc7 NetWork (No.7 nation-wide Network) between SCP1 and the SCP2, used Execute (execution) operation of INAP (intelligent network access protocol).Operate by Execute, make usefulness on each SCP in the Virtual Private Network can inquire user data on other SCP per family, promptly inquire the section distributing information on other SCP, setting up the communication between the user, thereby realize the function that VPN is carried out in the nationwide about the user.As shown in Figure 3, group user smp1 and smp2 are signed up in SCP1 and SCP2 respectively, user smap1 among the smp1 or web smap1 need carry out communication service with user smap2 or the web smap2 among the smp2, then at first need by among the SCP1 inquiry SCP2 about user's section distributing information, then, just can between two users or a plurality of user, carry out communication service by SCP1, the SCP2 of cc7 NetWork.The non-group user of in the network shown in Figure 3 other then can be triggered to corresponding SCP by msc/ssp (mobile switching centre/Service Switching Point) and go up the communication that realizes between the user, for example msc/sspll among Fig. 3, msc/ssp12, msc/ssp21 and msc/ssp22.

Specific implementation of the present invention is as shown in Figure 4:

Step 1: in the SCP of each province scope, create VPN, and unification is used identical VPN number in each SCP scope inside the province, promptly determined the identification information of each SCP, to distinguish the different SCP that economize;

Step 2: the cornet scope that the mode of distributing by number section is distributed VPN in each province's scope, i.e. number segment limit, the group user that the number of this number segment limit is used to distribute in each province's scope uses;

Step 3: the mobile operator of nationwide VPN in each province SCP scope understands the information of the SCP of each province VPN data, i.e. the section distributing information of each province VPN, the SCP identification information that the section distributing information number of comprising segment limit is corresponding with this scope number;

Step 4: the section distributing information that the each province is provided offers the mobile operator of each province, and preserves the section distributing information of the SCP of each province among the nationwide VPN on the SCP of each province; The mobile operator that is the each province is saved in assignment information on separately the SCP, and section distributing informations all among the nationwide VPN is all arranged on each SCP;

This step also comprises the processing to the business control nodes of new adding Virtual Private Network: the section distributing information that at first will need to add the business control nodes of Virtual Private Network makes an addition on each business control nodes of Virtual Private Network; Then, the section distributing information of each business control nodes of Virtual Private Network is stored on the initiate business control nodes, so just can be implemented in increases new business control nodes easily in the Virtual Private Network of having set up.

Step 5: when the user among the nationwide VPN initiates communication service, when calling, just this communication service is triggered on the SCP that this user contracts as the user;

Step 6:SCP judges according to called subscriber's number whether the called subscriber that this user dials is number segment limit in strange land, if be number segment limit in strange land, then execution in step 7, otherwise, execution in step 8;

Step 7: the SCP that on the SCP of this locality, inquires about this number section place by the interconnection of SCP, obtain called subscriber's information, described user profile is user's trombone and cornet corresponding informance, then, according to trombone that inquires and cornet corresponding informance, connect the called subscriber among the nationwide VPN, and according to the rate accounting of nationwide VPN;

Step 8: directly in local scope, connect the called subscriber, and according to inside the province VPN rate accounting.

The present invention can make mobile operator realize easily that under the situation that does not change original network configuration the whole nation of VPN is professional, for group user provides better service, thereby make mobile operator can win more user, to obtain better income.

Now further illustrate the detailed process of communicating by letter between the user in the nationwide Virtual Private Network of above-mentioned realization.

At first, be that nationwide VPN user dials cornet calling strange land user's calling procedure:

(1), user MSa dials 61001 calling party MSc, wherein: the data of MSa are on SCPa, and the data of MSc are on SCPc;

(2), MSCa/SSP (mobile switching centre/Service Switching Point at user MSa place) reports this to call out SCPa, triggers calling procedure;

(3), the SCPa analyzing called number, do not find the data of MSc in this locality, the local section distributing information table of inquiry finds the SCPc at MSc place;

(4), SCPa sends the Execute signaling to SCPc, requires to return the user profile of MSc;

(5), SCPc returns the user profile of MSc by Execute Result (carrying out response);

(6), SCPa judges type of call according to the result that receives, determine the caller charging regulation is handled by normal flow;

(7), MSCc/SSP (mobile switching centre/Service Switching Point at user MSc place) reports IDP (Initial Detection Point) incident to SCPc, triggers called flow;

(8), end of conversation, calling and called either party on-hook, SCPa call release.

Secondly, be that nationwide VPN user dials trombone calling strange land user's calling procedure:

(1), MSa dials 13823610000 and calls out MSd, the data of MSa are on SCPa, the data of MSd are on SCPd;

(2), MSCa/SSP reports and calls out SCPa, triggers calling procedure, SCPa analyzes called, does not find the data of MSd in this locality, query ID section allocation information table finds the SCPd at MSd place;

(3), SCPa sends the Execute signaling to SCPd, requires to return the user profile of MSd;

(4), SCPd returns the user profile of MSd by Execute Result;

(5), SCPa judges type of call according to the result that receives, determine called charging regulation is continued by normal flow;

(6), calling and called both sides conversation.

(7), end of conversation, calling and called either party on-hook, SCPa call release.

At last, be nationwide VPN customer call strange land user's called flow:

(1), MSa on-net call MSd, the data of MSa are on SCPa, the data of MSd are on SCPd;

(2), MSCa/SSP reports and calls out SCPa, the triggering calling procedure;

(3), MSCa/SSP triggers VPN IN service called flow, reports IDP to SCPd, SCPd analyzes caller, does not find the data of MSa in this locality, query ID section allocation information table is determined the SCPa at MSa place;

(4), SCPd sends first Execute signaling to SCPa, requires to return the user profile of MSa;

(5), SCPa returns the user profile of MSa by Execute Result;

(6), SCPd judges type of call according to the result that receives, determine called charging regulation is connect normal flow and continues

(7), calling and called both sides conversation.

(8), end of conversation, calling and called either party on-hook, SCPd call release.

Claims

1, realize the method for Virtual Private Network between a kind of a plurality of business control nodes, comprising:

2, realize the method for Virtual Private Network between a plurality of business control nodes according to claim 1, it is characterized in that described section distributing information is: business control nodes identification information and number segment limit corresponding with it.

3, realize the method for Virtual Private Network between a plurality of business control nodes according to claim 1, it is characterized in that described step b also comprises the processing to the business control nodes of new adding Virtual Private Network:

4, realize the method for Virtual Private Network between a plurality of business control nodes according to claim 1, it is characterized in that described step c comprises:

5, realize the method for Virtual Private Network between a plurality of business control nodes according to claim 4, it is characterized in that business control nodes that the called called subscriber of inquiry among the described step c4 contracts is based on that the executable operations Execute of intelligent network access protocol INAP realizes.

6, realize the method for Virtual Private Network between a plurality of business control nodes according to claim 5, it is characterized in that described step c4 comprises: