WO2012048543A1

WO2012048543A1 - Realization method, system and service control point for virtual private network intelligent service number portability

Info

Publication number: WO2012048543A1
Application number: PCT/CN2011/070600
Authority: WO
Inventors: 侯智荣
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-10-12
Filing date: 2011-01-25
Publication date: 2012-04-19
Also published as: CN101984687B; CN101984687A

Abstract

A realization method, system and Service Control Point (SCP) for Virtual Private Network (VPN) intelligent service number portability. The system includes: an SCP and a switching device; the SCP includes: a memory module, an inquiry module and a call continuation module; the method includes: when number portability occurs to a number for changing the subscription network, registering a first correspondence between the number and the Location Routing Number(LRN) of the new subscription network on the SCP of the original subscription network; when the VPN service of the home SCP of the call participant is triggered by a switching device, the SCP determines whether the called party has changed the subscription network according to whether the LRN corresponding to the called number can be inquired locally, then continues the current call through the switching device according to the inquiry result. With the application of the present invention, the signaling links are saved and the problem that the short number of the user can not be resolved by the technical solution of the existing intelligent network number portability, so the present invention has great economical value and technical value.

Description

Implementation method, system and service control point of VPN intelligent service number carrying

Technical field

The invention belongs to the technical field of mobile intelligent network, and particularly relates to a method, a system and a service control point for implementing a VPN intelligent service number carrying.

Background technique

As an emerging business service network in the mobile communication industry, the mobile intelligent network system can provide various value-added services conveniently, flexibly, economically and effectively, and can integrate with business systems, customer service centers, short message centers and banking systems. Users provide better, timely and user-friendly services. The mobile intelligent network system is one of the great business growth points for telecom operators.

The Virtual Private Network (VPN) service is a widely used intelligent network service. The business targets group customers, such as companies, groups, schools, hospitals, government agencies, etc. After applying for the business, the group can develop its own internal short numbering plan according to its own characteristics, which is convenient for memory and management. The short number can uniquely identify a group member (including the position, job number, etc.). When the real number of the group member changes, the numbering scheme of the short number can be not affected. In this way, the employees inside the group will not be the real number of the mobile terminal. The change affects the work connection, and the users in the group can find the user he wants to find by simply remembering the short number inside the group. In addition, the call can be classified according to the information of the call: for example, a call between members of the same group, called a VPN intranet call; a group of one or more small units can also be established within a group. Closing the user group, closing the call between users in the user group is called closed user group call in the VPN network; a group can also set some important extra-network customers, form an out-of-network number group, and call the call number when calling the out-of-network number group. Call for a VPN out-of-group number group. The service can give a greater degree of discount to the VPN network call, the closed network user group call in the VPN network, the VPN network outside group call, and the VPN ordinary network call according to different call types, so that the group user of the service can communicate with the service. The cost is reduced. For operators, this business attracts large group customers and can achieve better profits. Therefore, the business can reduce the communication costs of the group, facilitate the use of employees within the group, and enable operators to attract a large number of group customers and better realize their profits. These features make the business widely available. With the development of telecommunication networks and the increase in the penetration rate of telephones, users are increasingly demanding telecommunication services. The requirement of "number portability" is also an interest and implementation of services in various countries in the world in recent years. The "number portability" service allows users to continue to use the original number without changing the number when replacing the service provider and changing the service due to the address relocation, so it is very popular among users. In particular, commercial users, business users, and government agencies can change their numbers when they change office locations, eliminating the cumbersome task of replacing business cards. The inter-network number is carried when the user does not change the number when changing the operating company for various reasons. The carrying of inter-network numbers in a competitive environment promotes competition among operators. As of May 2004, about 23 countries and regions around the world have implemented number portability services (including fixed number portability services and mobile number portability services) to varying degrees. Of the 23 countries and territories where number portability has been implemented, more than half of the countries and territories have implemented number portability services in both the fixed and mobile phone markets. In summary, for a mobile intelligent network VPN user, after the number portability occurs, the original VPN service can continue to be used, and the original long number and short number are used to make the call without changing the number and user who is carrying the number. The experience of other users within the user, while providing accurate billing, is a technical problem to be solved. However, in view of the currently announced technical solutions, most of the methods are used to interact with the NPDB (Number Portability Database) to query the number portability user address routing information to solve the mobile intelligent network VPN service. The problem of number portability has occurred. In this method, the signaling interaction between the SCP (Service Control Point) and the NPDB is required during the call, which occupies the signaling link and reduces the call efficiency. Moreover, since the NPDB cannot parse the short number of the user, the number portability problem of the VPN service cannot be solved.

Summary of the invention

The object of the present invention is to provide a method, a system, and a service control point for implementing the VPN intelligent service number carrying, so as to solve the defect that the existing VPN service has a low call efficiency after the number is carried.

To solve the above problem, the present invention provides a method for implementing a VPN intelligent service number carrying, which is applicable to a call process in which a mobile virtual private network (VPN) user carrying a number portability participates, including:

Step A: When a number is carried due to the replacement of the subscription network, the original contracted network The first correspondence between the number and the routing address number (LRN) of the new subscription network is registered on the Service Control Point (SCP);

Step B: When the VPN service on the calling SCP of the calling participant is triggered by a switching device, the calling SCP of the calling participant determines whether the called party has changed the subscription according to whether the LRN corresponding to the called number can be locally queried. The network then connects the current call through the switching device according to the above query result.

Preferably, in the above method, step B includes:

When the VPN service on the first SCP to which the calling number belongs is triggered by the first switching device of the network where the calling party is currently located, the first SCP determines whether the first SCP can locally query the LRN corresponding to the called number. Whether the called party replaces the subscription network, and then connects the current call to the second switching device of the current subscription network of the called party through the first switching device according to the foregoing query result; and the VPN on the second SCP to which the called number belongs When the service is triggered by the second switching device, the second SCP determines whether the called party has changed the subscription network according to whether the LRN corresponding to the called number can be locally queried, and then passes the query result according to the foregoing query result. The second switching device connects the current call to the called party.

Preferably, the called number or calling number is a mobile subscriber integrated service digital network number (MSIDSN) of the called or calling party or a short number corresponding to the MSISDN.

Preferably, the step of the first SCP connecting the current call to the second switching device of the current subscription network by the first switching device according to the query result includes:

The first SCP sends the current call carrying the called number to the first switching device, and if the LRN corresponding to the called number is locally queried, the LRN is also carried in the current call. ;

The first switching device determines whether the received current call carries the LRN, and if so, connects the current call to the switching device of the network corresponding to the LRN; if not, connects the current call to the first SCP. The switching device of the network.

Preferably, the method further includes:

When the VPN service on the first SCP is triggered by the first switching device, the first SCP determines whether the calling party has changed the subscription according to whether the LRN corresponding to the calling number can be locally queried. The network then determines whether the current subscription network of the calling party obtained according to the query result is the same as the current subscription network of the called party. If the same, the intra-network charging scheme of the group user is selected for the calling party; if different, The calling party selects an internet charging scheme of the group user;

The first SCP calculates the available call duration of the calling party according to the selected charging scheme and the account balance of the calling party; when the available calling duration is greater than zero, the current switching device passes the current switching device. The call is connected to the second switching device.

Preferably, the method further includes:

When the VPN service on the second SCP is triggered by the second switching device, the second SCP determines whether the calling party replaces the subscription network according to whether the LRN corresponding to the calling number can be locally queried, and then determines whether the calling party replaces the subscription network. According to the result of the query, whether the current subscription network of the calling party is the same as the current subscription network of the called party, if the same, the charging scheme of the group user network is selected for the called party; if not, the called party selects the charging scheme. Group user network charging plan;

The second SCP calculates the available call duration of the called party according to the selected charging scheme and the called account balance; when the available call duration is greater than zero, the current switching device passes the current The call is connected to the called party.

Preferably, the above method further includes:

The number of the number-carrying number is registered on the SCP of the original contracted network, and the first N digits of the new billing number consisting of the LRN of the new contracting network of the number and the MSISDN corresponding to the number and the new signing network identification information and new The second correspondence of the signed charging area identification information; wherein, the number of digits required for the N area;

When the first SCP and/or the second SCP select a charging scheme for each corresponding call participant, if the LRN corresponding to the call participant is locally queried, the first SCP and/or the second SCP will be corresponding to the call participant. The LRN and the string of the MSISDN corresponding to the call participant are used as the new charging number of the calling party, and then query the new subscription charging area identifier corresponding to the new charging number according to the second correspondence. The information, according to the new subscription charging area identification information and the current location of the calling participant user is a charging scheme for the calling participant user to select roaming or local calling.

Preferably, the above method further includes: When the current call ends, the first switching device and/or the second switching device respectively send a call end message carrying the call duration to the SCP of the same network;

The first SCP and/or the second SCP calculate a fee corresponding to the current call participant's current call according to the selected charging scheme, the received call duration, and other charging related information.

The invention also provides a system for implementing VPN intelligent service number carrying, comprising: a service control point (SCP) and a switching device;

The SCP is configured to: when the SCP of the home network that is the number carried by the number change network due to the replacement of the subscription network, register the first correspondence between the number and the routing address number (LRN) of the new subscription network; and, participate in the call When the party belongs to the SCP, when the VPN service on the SCP is triggered by the switching device, it is determined whether the called party has changed the subscription network according to whether the LRN corresponding to the called number can be locally queried, and according to the above query. Resulting that the current call is sent to the switching device;

The switching device is configured to: trigger a VPN service on the SCP; and, continue to receive the call.

Preferably, the SCP is configured to send the current call to the switching device by: as an SCP to which the calling number belongs during a call involving a mobile virtual private network (VPN) user carrying the number portability, in the SCP When the VPN service is triggered by the first switching device of the network where the calling party is currently located, whether the called party has changed the subscription network according to whether the LRN corresponding to the called number can be locally queried, and then according to the foregoing query result, Sending the current call to the first switching device; and, as the SCP to which the called number belongs, when the VPN service on the SCP is triggered by the second switching device of the current network of the called party, according to whether the local query can be performed locally Determining, by the LRN corresponding to the called number, whether the called party has changed the subscription network, and then sending the current call to the second switching device according to the foregoing query result;

The switching device is configured to connect the received call in the following manner: when the calling device is currently the switching device of the network, the current call sent by the SCP is connected to the second call of the called current subscription network. And switching the current call sent by the SCP to the called party when the switching device of the current subscription network is called. Preferably, the SCP is further configured to: determine, according to whether the calling party can change the subscription network according to whether the calling party number is the same as the LPN corresponding to the calling number, and then determine whether the calling network is replaced according to the query result. Whether the current subscription network is the same as the current subscription network of the called party, if the same, the intra-network charging scheme of the group user is selected for the calling party; if different, the group user is selected for the calling party. The inter-network charging scheme; and, according to the selected charging scheme and the account balance of the calling party, calculating the available call duration of the calling party; when the available calling duration is greater than zero, the current call is sent to the current call The first switching device. Preferably, the SCP is further configured to: determine, as the called home SCP, whether the calling party has changed the subscription network according to whether the LRN corresponding to the calling number can be locally queried, and then determine the calling party obtained according to the query result. Whether the current subscription network is the same as the current subscription network of the called party, if the same, the selected intra-network charging scheme is selected for the called party; if different, the called party selects the inter-network charging scheme of the group user. And calculating, according to the selected charging scheme and the called account balance, the called available call duration; when the available call duration is greater than zero, sending the current call to the second switching device .

Preferably, the switching device is further configured to send a call end message carrying the call duration to the SCP of the same network at the end of the current call;

The SCP is further configured to calculate a fee for the current call of the call participant corresponding to the SCP according to the selected charging scheme, the received call duration, and other charging related information.

The present invention also provides a service control point (SCP) for implementing a VPN intelligent service number, comprising: a storage module, a query module, and a call connection module;

The storage module is configured to: when the SCP is used as the SCP of the home network of the number that carries the number carried by changing the subscription network, save the first correspondence between the number carried by the generation number and the routing address number (LRN) of the new subscription network. ;

The query module is configured to: when the SCP is used as a home SCP of a call participant,

When the VPN service on the SCP is triggered by the switching device, it is determined whether the called party has changed the subscription network according to whether the LRN corresponding to the called number can be locally queried.

The call connection module is configured to: forward the current call according to the query result queried by the query module The call is sent to the switching device.

Preferably, the query module is configured to determine whether the called party has changed the subscription network by:

When the SCP is used as the SCP to which the calling number belongs during the call of the mobile virtual private network (VPN) user carrying the number port, the VPN service on the SCP is the first switching device of the network where the calling party is currently located. When triggered, determining whether the called party replaces the subscription network according to whether the LRN corresponding to the called number is queried in the storage module; and, in the SCP, the SCP of the called network of the called number, and the SCP When the VPN service is triggered by the second switching device of the current subscription network, whether the called party has changed the subscription network is determined according to whether the LRN corresponding to the called number can be locally queried;

The call connection module is configured to send the current call to the switching device by: when the SCP is used as the SCP to which the calling number belongs, sending the current call according to the query result obtained by the query module by querying And to the first switching device; and, when the SCP is the SCP to which the called party belongs, the current call is sent to the second switching device according to the query result obtained by the query module by querying.

Preferably, the foregoing SCP further includes a charging module;

The querying module is further configured to: when the SCP is used as the SCP to which the calling number belongs, determine whether the calling party replaces the subscription network according to whether the LRN corresponding to the calling number can be locally queried;

The charging module is configured to: when the SCP is used as the SCP to which the calling number belongs, determine whether the current subscription network of the calling party obtained according to the query result is the same as the current subscription network of the called party, if the same, Selecting an in-network charging scheme for the group user for the calling party; when determining that the two are different, selecting an internet charging scheme for the group user for the calling party; and, according to the selected charging scheme and the The calling account balance, calculating the available call duration of the calling party.

Preferably, the foregoing SCP further includes a charging module;

The querying module is further configured to: determine, when the SCP is the SCP to which the called party belongs, whether the calling party replaces the subscription network according to whether the LRN corresponding to the calling number can be locally queried; the charging module Set to: when the SCP is used as the SCP to which the called party belongs, If the current subscription network obtained by the inquiry is the same as the current subscription network of the called party, if the same, the selected group user network charging scheme is selected; when it is determined that the two are different, The called party selects a group user inter-network charging scheme; and, according to the selected charging scheme and the called account balance, calculates the available call duration of the called party.

Preferably, the storage module is further configured to: when the SCP is used as the SCP to which the calling number belongs, register the new charging number consisting of the LRN of the new subscription network and the MSISDN corresponding to the number of the number carried by the number. The second corresponding relationship between the first N digits and the identification information of the new subscription network and the newly signed charging area identification information; wherein, N is the home network identifier and the attribution of the default MSISDN in the SCP of the original subscription network. The number of digits required for the fee zone;

The charging module is further configured to: query, by the query module, the corresponding call participant

In the case of the LRN, a character string composed of the LRN number corresponding to the call participant and the MSISDN corresponding to the call participant is used as the new billing number of the call participant, and then the second correspondence is queried according to the second correspondence. The new subscription charging area identification information corresponding to the new charging number, according to the new subscription charging area identification information and the current location of the calling participant user, is a charging scheme for the calling participant user to select roaming or local calling.

Preferably, the charging module is further configured to calculate, according to the selected charging scheme, the call duration received from the network switching device and other charging related information, the cost of the current call of the call participant corresponding to the SCP.

After the invention is used, only a simple modification of the existing VPN intelligent service and charging system is required, and the charging of the number carried by the VPN user can be realized. At the same time, it avoids the interaction between the SCP and the NPDB signaling during the call, saves the signaling link, and solves the problem that the existing intelligent network number portability technical solution cannot resolve the user short number, and has high economic value and technical value. BRIEF abstract

1 is a structural diagram of an SCP according to an embodiment of the present invention;

2 is a flowchart of an overall service call in an embodiment of the present invention;

3 is a flowchart of a calling party according to an embodiment of the present invention; FIG. 4 is a flowchart of selecting a charging process of a calling process according to an embodiment of the present invention;

FIG. 5 is a flowchart of a called party according to an embodiment of the present invention;

FIG. 6 is a flowchart of selecting a billing scheme of a called party according to an embodiment of the present invention. Preferred embodiment of the invention

The implementation method and charging method of the invention will be described below with specific embodiments.

As shown in FIG. 1, the SCP of the present invention includes at least: a storage module, a query module, and a call connection module;

The storage module is configured to: when the SCP is used as the SCP of the home network of the number carried by the number exchanged by the subscription network, save the first correspondence between the number and the routing address number (LRN) of the new subscription network;

The query module is configured to: when the SCP is used as the home SCP of the calling party, when the VPN service on the SCP is triggered by the switching device, whether the called party is replaced according to whether the LRN corresponding to the called number can be queried in the storage module. Contracted network;

The call connection module is configured to send the current call to the switching device according to the query result queried by the query module.

The query module is configured to determine whether the called party has changed the subscription network by: when the SCP is the SCP to which the calling number belongs during the call process of the VPN user carrying the number port, the VPN on the SCP When the service is triggered by the first switching device of the network where the calling party is currently located, whether the called party has changed the subscription network according to whether the LRN corresponding to the called number can be queried in the storage module; and, the SCP is assigned as the called number. The SCP of the network, and the VPN service on the SCP is triggered by the second switching device of the current subscription network, whether the called party has changed the subscription network according to whether the LRN corresponding to the called number can be locally queried;

The call connection module is configured to send the current call to the switching device by using the following method: When the SCP is used as the SCP to which the calling number belongs, the current call is sent to the first switching device according to the query result obtained by the query module by querying; When the SCP is the SCP to which the called party belongs, the current call is sent to the second switching device according to the query result obtained by the query module through the query.

In addition, the foregoing SCP may further include a charging module; The query module may be further configured to determine whether the calling party replaces the subscription network according to whether the SLR corresponding to the calling number can be locally queried when the SCP is used as the SCP to which the calling number belongs.

The charging module is configured to: when the SCP is used as the SCP to which the calling number belongs, when it is determined that the current calling network of the calling party obtained according to the query result is the same as the current calling network of the called party, the calling party selects the group user's network. The charging scheme; when it is determined that the two are different, the inter-network charging scheme of the group user is selected by the calling party; and, according to the selected charging scheme and the account balance of the calling party, the available calling duration of the calling party is calculated. Or,

The querying module may be further configured to determine whether the calling party has changed the subscription network according to whether the SRN corresponding to the calling number can be locally queried when the SCP is used as the SCP to which the called party belongs.

The charging module is configured to: when the SCP is used as the SCP to which the called party belongs, when it is determined that the current calling network of the calling party obtained according to the query result is the same as the current calling network of the called party, the selected group user network is selected for the called party. The fee plan; when determining that the two are different, selecting a group user network charging plan for the called party; and calculating the available call duration of the called party according to the selected charging plan and the called account balance.

The storage module may be further configured to: when the SCP is used as the SCP to which the calling number belongs, register the first N digits and the new number in the new charging number consisting of the LRN of the new subscription network and the MSISDN corresponding to the number. a second correspondence between the identification information of the subscription network and the newly-recognized charging area identification information; wherein, N is a preset home network identifier for determining the MSISDN number in the SCP of the original subscription network and a digital digit required for the home charging area Number

The charging module may be further configured to: when the query module on the same SCP queries the LRN number corresponding to the calling party number, the character string consisting of the LRN number corresponding to the calling party and the calling party MSISDN number is used as the Calling the new billing number of the participant, and then querying the new subscription billing area identifier information corresponding to the new billing number according to the second correspondence, according to the new signing area identifier information and the current location of the calling party user For the calling party user, the charging scheme of the roaming or local call is selected accordingly. The charging module may be further configured to calculate a fee corresponding to the current call participant's current call according to the selected charging scheme, the call duration received from the network switching device, and other charging related information. Preferably, the function of the storage module can be implemented by using a Service Management Access Point (SMAP), and the functions of the remaining modules can be implemented by using VPN service logic.

The implementation method for carrying the VPN intelligent service number according to the present invention is applicable to the GSM intelligent network and the CDMA intelligent network. Applicable to the call process in which the VPN user with number portability participates, including:

1) When a number is carried by the replacement of the subscription network, the SCP (that is, the home SCP of the number) of the original contracted network is registered with the number and the routing address number (LRN) of the new subscription network. First correspondence

2) When the calling party's home VPN service on the SCP is used by a switching device (such as MSC)

(Mobile Switching Center, Mobile Switching Center) When triggered, the SCP determines whether the called party has changed the subscription network according to whether it can locally query the LRN corresponding to the called number, and then connects the current call through the switching device according to the above query result. .

The call participant refers to the calling or called party participating in the call, and the number refers to the MSIDSN (Mobile Subscriber International ISDN) number or the short number corresponding to the MSISDN number.

When the current call ends, the switching device sends a call end message carrying the call duration to the calling participant home SCP; the home SCP calculates the current according to the selected charging scheme, the received call duration, and other charging related information. The cost of the second call.

Specifically, the call flow of the present invention is as follows:

S01: When a number carries a number, a correspondence between the number carried by the number generation and the LRN carried in the network (ie, the new subscription network) is registered in the database for storing the VPN service data on the number belonging to the SCP;

S02: Performing a number analysis configuration for the LRN on the MSC side, so that when the number portability user is called, the MSC of the current network of the calling party can route the call to the switching device carried by the user into the network according to the local configuration (for example, Mobile network MSC);

S03: During the call, when the calling party belongs to the VPN service on the SCP, the switching service is replaced by a switching device. When triggered, the home SCP queries, according to the long/short numbers of the calling and called users, whether the LRN corresponding to the above number is saved in the local database;

S04: determining, according to the query result, the current calling and calling network of the calling party, if the two are contracted to the same network, selecting the charging scheme of the group user network for the calling party and the called party; if the contracted network is different, selecting the calling party and the called party Group user off-net billing plan;

S05: According to the length of the mobile access number configured by the charging system, the character string stringl of the corresponding length is intercepted in the string (LRN+user MSIDSN) as an access number; the HLR (Home Location Register) configured according to the charging system The length of the number segment, in the string (LRN + user MSIDSN) after the string is removed, the corresponding length is intercepted as the HLR segment string2; in the billing system, the local charging area code corresponding to stringl+string2 is configured; The MSISDN number of the user is the number dialed when a calling party in the digital public land mobile mobile communication network calls the called user, and the number is composed of the country number and the domestic valid ISDN number. China's national number is 86, and the domestic effective ISDN number is an equal-length number containing 11 digits. Its structure is: NiNzNSs+HoHiHzHs+ABCDa, where N2N33 is the mobile service access number used to identify different mobile systems, such as The current mobile access number is 135~139, Unicom is 130~131; Η ₀ ΗιΗ ₂ Η ₃ These four digits represent the HLR identification number. In the HLR identification number, 3⁄43⁄4 is uniformly distributed by the whole country, and 3⁄4 is allocated by each province. An HLR can correspond to one or more: 3⁄413⁄4 values; ABCD is the number of mobile users in each HLR, which is assigned by each HLR.

In the billing system, N1N2N3 is used to represent the subscriber subscription network, and H0H1H2H3 is the subscriber's home HLR. N1N2N3H0H1H2H3 also uniquely determines the subscriber's home billing area code. Therefore, these are all necessary for billing, and the billing system analyzes these and decides how to charge.

S06: Send the MSISDN number of the calling party and the corresponding LRN number (when the LRN number is saved locally) to the charging module in the SCP together with the charging plan selected in step S04, The fee module performs charging control (that is, calculates the available call duration); S07: The SCP performs call connection through the MSC according to the result of the charging control (that is, when the calculated available call duration is not 0, the call is connected, in the calculation When the available call duration is 0, the caller may be prompted to end the call), and the connected called number needs to carry the corresponding LRN information, and the MSC connects the call to the corresponding network according to the LRN; S08: When the call ends, the MSISDN number of the calling party and the corresponding LRN number and the charging plan selected by S04 are sent to the charging module together, and the charging module performs charging;

S09: The SCP deducts the cost of the call from the account of the calling participant according to the result of the foregoing charging, and issues a CDR (Calling Detail Records) CDR, which includes the main entrant participating in the call. The corresponding LRNs are called for the BOSS (Business & Operation Support System) to collect bills for different network operators to settle fees.

The various correspondences that need to be configured on the SCP are further described below with an application example of the present invention.

After the number of the VPN user is carried in the network A, the user data saved in the SCP of the network is as shown in the following table. The LRN can contain letters and numbers.

The LRN user who is carried into the D network and the 8801 is the D network is on the A network, and no number is generated.

8613905190603 61003 Group 1

Code carrying

User on the A network, no number

8613905190604 81004 Group 2

Code Carrying The A network in Table 1 is the network where the VPN service is located.

Further, as shown in Table 2, the correspondence between the LRN and the network may be configured in the database of the SCP, and in step S04, the SCP may determine the call according to the current home network of the calling and called parties (ie, the network corresponding to the LRN). Whether it is an intra-network call or an inter-network call, the determination method is shown in Table 3.

Table 2 Correspondence between LRN and network

Table 3 Intranet/internet call description

The intra-network call, and not the same group call, that is, the group call is further advanced, assuming that the access number configured by the original billing system is 3, and the length of the HLR number is 4, as described in step S05. The following configuration needs to be made in the SCP database. The configuration relationship is shown in Table 4:

Table 4 Correspondence between the user number and the attribution area number

The following two application examples respectively describe the call flow when the user carrying the number is used as the calling and called.

Application example: The call flow when the user carrying the number is the calling party

4 The user's MSISDN number is 8613905190600, and the user 2's MSISDN number is 8613905190603. As shown in Table 1, the number 1 carried by the user 1 is carried into the network as the B network, and the LRN of the network B is D0801; the user 2 belongs to the A network, and the number portability does not occur. As shown in FIG. 3, when the user 1 dials the short number 61003 of the user 2, the process of the user 1 as the calling party mainly includes the following steps:

S3-01: The VPN service on the SCP to which the calling user belongs is triggered by the MSC in the calling location;

S3-02: The SCP queries the LRN corresponding to the calling and called number in the local database, and selects an accounting plan for the calling user according to the query result;

S3-03: The SCP sends the selected charging scheme, the called number, the calling number with the added LRN, the current location information of the calling user, and the balance of the calling user to the charging module, which is calculated by the charging module. The available call duration of the calling user; S3-04: The SCP determines whether the called user has carried the number according to whether the LRN corresponding to the called number is stored in the database.

S3-05: If the LRN corresponding to the called number is not stored in the database, it is considered that the number of the called number does not carry, and the SCP performs call control, and then connects the call to the home MSC of the calling number, where the bearer is carried. Calling the number and the called number, performing step S3-07;

S3-06: If the LRN corresponding to the called number is stored in the database, the number of the called number is considered to be carried, and the SCP performs call control, and the call is sent to the MSC, where the calling number is carried and The called number corresponding to the LRN as its prefix;

S3-07: If the MSC has the LRN prefix in front of the called number, the call is connected to the network corresponding to the LRN; if the LRN prefix is not carried, the call is connected to the home network of the called number.

In this embodiment, since the called number does not carry the number, and the called number belongs to the calling number of the calling network, the MSC will connect the call to the network.

S3-08: After the call ends, the SCP sends the selected charging scheme, the calling party number with the LRN prefix, the location information of the calling user, and the current calling duration to the charging module on the SCP. The billing module calculates the calling fee of the calling user;

53- 09: The SCP issues a call CDR, which identifies the number portability information of the calling party users, and deducts the calling party's fee for the call in the calling user's account.

The selection process of the charging scheme of the calling user in step S3-02, as shown in FIG. 4, includes:

54- 01 : The SCP queries the LRN and group information corresponding to the calling user and the closed subscriber group number according to the long number of the calling subscriber 1;

In this example, the result of the query is that the number 1 is carried by the calling user. The LRN carried into the network is D0801.

S4-02: SCP determines whether the called number is a long number or a short number. If the number is a long number, step S4-03 is performed. If the number is short, step S4-04 is performed;

In this example, the calling subscriber calls the short number of the called subscriber, and therefore performs the step S4-04 branch. S4-03: The SCP queries the LRN, the group information, and the closed user group number corresponding to the called number according to the called long number, and then performs step S4-05;

S4-04: The SCP queries the LRN, the group information, and the closed user group number corresponding to the called number according to the called short number;

If the LRN of the called user 2 is null, the called user 2 does not have the number carrying.

S4-05: The SCP determines whether the LRNs of the calling and called users are the same. If they are the same, the process proceeds to step S4-06. If not, the process proceeds to step S4-07.

S4-06: The SCP determines whether the calling party and the called party are the same group user according to whether the called party information of the calling party and the called party are the same, if yes, step S4-08 is performed, and if not, executing S4-12;

S4-07: The SCP determines whether the calling party and the called party are the same group user according to whether the called party information of the calling party and the called party are the same, and if yes, executing step S4-09, if not, executing step S4-13;

S4-08: The SCP determines whether the calling party and the called party are the same closed user group user according to whether the called calling party and the called closed user group number are the same. If yes, step S4-10 is performed, if not, step S4 is performed. -11 ;

S4-09: The SCP determines whether the calling party and the called party are the same closed user group according to whether the called party and the called closed user group number are the same. If yes, step S4-14 is performed, if not, step S4 is performed. 15;

S4-10: The SCP determines that the current call type is the same closed subscriber group call and the intra-network call, and the charging scheme is selected as the same closed subscriber group and the charging scheme of the calling party in the network ends;

S4-11: The SCP determines that the current call type is an ordinary call within the same group and the intra-network call, and the charging scheme is selected as an ordinary call within the same group and the charging scheme of the calling party in the network ends;

S4-12: The SCP determines whether the called number is the group outside the group of the calling party, if yes, executing step S4-17, if not, executing step S4-16;

S4-13: The SCP determines whether the called number is the group outside the group of the calling party, if yes, executing step S4-18, if not, executing step S4-19;

S4-14: The SCP determines that the call type is the same closed subscriber group call and the inter-network call, select The charging scheme is the same closed user group and the charging scheme of the inter-network calling party ends;

S4-15: The SCP determines that the current call type is an ordinary call within the same group and the inter-network call, and the charging scheme is selected as an ordinary call within the same group and the charging scheme of the inter-network caller ends;

In this example, the calling and called numbers are ordinary intra-group calls and are inter-network calls, so the S4-15 branch is executed.

S4-16: The SCP determines that the call type is an ordinary group outside number and the intra-network call, and the charging scheme is selected as the ordinary group external number and the charging scheme of the calling party in the network ends.

S4-17: The SCP determines that the call type is an out-of-group number group and the intra-network call, and the charging scheme is selected as the group outside group group and the charging scheme of the calling party in the network ends.

S4-18: The SCP determines that the call type is an out-of-group number group and the inter-network call, and the charging scheme is selected as the group outside group number and the inter-network caller's charging scheme ends.

54- 19: The SCP determines that the call type is an ordinary group outside number and the inter-network call, and the charging scheme is selected as the ordinary group external number group and the inter-network calling party's charging scheme ends.

Further, in steps S3-03 and S3-08,

Since the numbering of the calling party occurs, the calling number sent to the charging module is LRN+calling MSISDN, D080113905190600. The called party does not have number portability, so the called number sent to the charging module is the called MSISDN, 13905190603.

Application example 2: The call flow when the user carrying the number is called as the called party

4 The user's MSISDN number is 8613905190602, and the user 4's MSISDN number is 8613905190606. As shown in Table 1, both users 3 and 4 have number portability. The network carried by network A is the D network, and the LRN of the D network is 8801. User 3 and User 4 are not the same group user. As shown in FIG. 5, when the user 3 dials the long number 13905190606 of the user 4, the process of the user 4 as the called party mainly includes the following steps:

55- 01: The VPN service on the SCP of the called subscriber's home network is triggered by the MSC of the current subscriber network of the called subscriber; S5-02: The SCP queries the LRN corresponding to the calling and called number in the local database, and selects an accounting plan for the called user according to the query result.

S5-03: The SCP sends the selected charging scheme, the calling party number added with the LRN prefix, the current location information of the called user, and the balance of the called user to the charging module, and the charging module calculates the called party. The available call duration of the user;

S5-04: The SCP determines whether the called user has carried the number according to whether the LRN corresponding to the called number is stored in the database.

S5-05: If the LRN corresponding to the called number is not stored in the database, the number of the called number does not occur, and the SCP performs call control, and the call is sent to the MSC of the network, where the called number is carried. Perform step S5-07;

S5-06: If the LRN corresponding to the called number is stored in the database, if the number of the called number is carried, the SCP performs call control, and the call is sent to the MSC of the network, where the corresponding LRN is carried. The called number of its prefix;

S5-07: If the MSC has the LRN prefix in front of the called number, the MSC connects the call to the network corresponding to the LRN; if the LRN is not carried, the call is directly connected to the called user.

In this embodiment, since the number of the called number is carried, the MSC connects to the D network according to the LRN (ie, 8801).

S5-08: After the call is over, the SCP sends the selected charging scheme, the calling party number with the LRN prefix, the location information of the called user, and the current call duration to the charging module on the SCP. The charging module calculates a call fee of the called user;

55- 09: The SCP issues a call CDR, which identifies the number portability information of the users on both sides of the call, and deducts the fee of the called user of the call in the account of the called user.

The selection process of the charging scheme of the called user in step S5-02, as shown in FIG. 6, includes:

56- 01 : The SCP queries the LRN and group information corresponding to the calling user and the closed subscriber group number according to the long number of the calling subscriber 3;

In this example, the result of the query is that the number 3 is carried in the calling user 3, and the LRN carried into the network is 8801.

S6-02: The SCP queries the called routing code, group information and closed user group number based on the called long number.

The query result in this embodiment is that the LRN of the called user 2 is 8801;

S6-03: The SCP determines whether the LRNs of the calling and called users are the same. If they are the same, perform the steps.

S6-04, if not the same, then step S6-05;

S6-04: The SCP determines whether the calling party and the called party are the same group user according to whether the called party information of the calling party and the called party are the same, if yes, step S6-06 is performed, if not, step S6-10 is performed;

S6-05: The SCP determines whether the calling party and the called party are the same group user according to whether the called party information of the calling party and the called party are the same. If yes, step S6-07 is performed; if not, step S6-11 is performed;

S6-06: The SCP determines whether the calling party and the called party are the same closed user group according to whether the called party and the called closed user group number are the same. If yes, step S6-08 is performed, if not, step S6- is performed. 09;

S6-07: The SCP determines whether the calling party and the called party are the same closed user group according to whether the called party and the called user group number are the same. If yes, step S6-12 is performed, if not, step S6- is performed. 13;

S6-08: The SCP determines that the current call type is the same closed subscriber group call and the intra-network call, and the charging scheme is selected as the same closed subscriber group and the called billing scheme in the network ends.

S6-09: The SCP determines that the current call type is an ordinary call within the same group and the intra-network call, and the charging scheme is selected as the ordinary call within the same group and the called billing scheme in the network ends.

S6-10: The SCP determines whether the calling number is the group outside the group of the called party, and if yes, executing step S6-15, if not, executing step S6-14;

S6-11: The SCP determines whether the calling number is the group outside the group in which the called party is located, and if yes, executes step S6-16, if not, proceeds to step S6-17.

S6-12: The SCP determines that the call type is the same closed subscriber group call and the inter-network call, and the charging scheme is selected as the same closed subscriber group and the inter-network called charging scheme ends. S6-13: The SCP determines that the call type is an ordinary call within the same group and the inter-network call, and the charging scheme is selected as an ordinary call within the same group and the called scheme of the inter-network call is terminated.

In this example, the calling and called number is a normal intra-group call and is an inter-network call, so the S6-13 branch is executed.

S6-14: The SCP determines that the current call type is an ordinary group outside number and the intra-network call, and the charging scheme is selected as the ordinary group external number and the called billing scheme in the network ends.

S6-15: The SCP determines that the current call type is an out-of-group number group and the intra-network call, and the charging scheme is selected as the group outside group number and the called billing scheme in the network ends.

S6-16: The SCP determines that the call type is an out-of-group number group and the inter-network call, and the charging scheme is selected as an out-of-group number group and the inter-network called charging scheme ends.

S6-17: The SCP determines that the call type is an ordinary group outside number and the inter-network call, and the charging scheme is selected as the normal group external number group and the inter-network called charging scheme ends.

Further, in steps S5-03 and S5-08,

Since the numbering of the calling party occurs, the calling number sent to the charging module is

LRN+MSISDN is 880113905190602.

Since the numbering of the called party also occurs, the called number sent to the charging module is LRN+MSISDN, which is 880113905190606.

It can be seen from the above that: the VPN service calling process, the various call types of the called process can implement the number-carrying charging and connection according to the above manner. The embodiment of the invention only takes the calling and called flows as an example. It is obvious that the unconditional forwarding and conditional forwarding processes of the VPN service can also be implemented by using the method. General intra-group calls for VPN calls, ordinary group out-of-group calls, closed group calls, and group outside group calls can be implemented in accordance with the method of the present invention. The implementation method and system do not need to add new equipment, and only need to be simply modified on the existing VPN intelligent service and charging system to realize the charging of the number carried by the VPN user. In this way, the SCP and the NPDB signaling interaction are avoided when the call is avoided, the signaling link is saved, and the problem that the existing intelligent network number portability technical solution cannot resolve the user short number is solved, which has high economic value and technical value. . One of ordinary skill in the art will appreciate that all or a portion of the above steps may be performed by a program to instruct the associated hardware, such as a read only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware, or may be implemented in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.

Industrial applicability

Compared with the prior art, the present invention only needs to be simply modified on the existing VPN intelligent service and charging system to realize the charging of the number carried by the VPN user. At the same time, it avoids the interaction between the SCP and the NPDB signaling during the call, saves the signaling link, and solves the problem that the existing intelligent network number carrying technical solution cannot resolve the short number of the user, and has high economic value and technical value.

Claims

Claim

A method for implementing a mobile virtual private network (VPN) intelligent service number carrying, which is applicable to a call process in which a VPN user carrying a number carries, including:

Step A: When a number is carried by the replacement of the subscription network, the first correspondence between the number and the routing address number (LRN) of the new subscription network is registered on the service control point (SCP) of the original subscription network;

Step B: When the VPN service on the calling party's home SCP is triggered by a switching device, the calling party's home SCP determines whether the called number is based on whether the LRN corresponding to the called number can be locally queried. The subscription network is replaced, and then the current call is connected through the switching device according to the query result.

2. The method of claim 1, wherein the step B comprises:

When the VPN service on the first SCP to which the calling number belongs is triggered by the first switching device of the network where the calling number is currently located, the first SCP determines, according to whether the LRN corresponding to the called number can be locally queried. Determining whether the called number has changed the subscription network, and then, according to the query result, the current switching call is connected to the second switching device of the current subscription network of the called number by using the first switching device;

When the VPN service on the second SCP to which the called number belongs is triggered by the second switching device, the second SCP determines the called number according to whether the LRN corresponding to the called number can be locally queried. Whether the subscription network is replaced, and then the current call is connected to the called number through the second switching device according to the query result.

3. The method of claim 2, wherein

The called number or calling number is a mobile subscriber integrated service digital network number (MSIDSN) of the called or calling party or a short number corresponding to the MSISDN.

4. The method of claim 2, wherein

The step of the first SCP connecting the current call to the second switching device of the current subscription network of the called number by using the first switching device includes:

Transmitting, by the first SCP, the current call carrying the called number to the first switching device, and in the case of locally querying the LRN corresponding to the called number, carrying the LRN In the current call;

If the first switching device determines that the received current call carries the LRN, the current call is connected to the switching device of the network corresponding to the LRN; if it is determined that the received current call does not carry the LRN, the current call is sent. A switching device connected to the network where the first SCP is located.

5. The method of claim 2, further comprising:

When the VPN service on the first SCP is triggered by the first switching device, the first SCP determines whether the calling number is replaced by the subscription network according to whether the LRN corresponding to the calling number can be locally queried. Determining whether the current subscription network of the calling number obtained according to the query result is the same as the current subscription network of the called number, and if the same, selecting the intra-network charging scheme of the group user for the calling number; if different, Selecting an inter-network charging scheme for the group user for the calling number;

The first SCP calculates an available call duration of the calling number according to the selected charging scheme and the account balance of the calling number; and passes the first switching device when the available calling duration is greater than zero The current call is connected to the second switching device.

6. The method of claim 2, further comprising:

When the VPN service on the second SCP is triggered by the second switching device, the second SCP determines whether the calling number is replaced by the subscription network according to whether the LRN corresponding to the calling number can be locally queried. Determining whether the current subscription network of the calling number obtained according to the query result is the same as the current subscription network of the called number, and if the same, selecting the charging scheme of the group user network for the called number; if not, And selecting a group user network charging scheme for the called number;

The second SCP calculates an available call duration of the called number according to the selected charging scheme and the account balance of the called number; and passes the second switching device when the available call duration is greater than zero. Connect the current call to the called number.

7. The method of claim 5 or 6, further comprising:

The number carrying the number due to the replacement of the subscription network registers the first N digits of the new billing number consisting of the LRN of the new subscription network of the number and the MSISDN corresponding to the number on the SCP of the original subscription network. The identification information of the new contracting network and the charging area identifier of the new contracting network a second correspondence of the information; where N is a preset number of digits required to determine the home network identifier of the MSISDN and the home charging area in the SCP of the original subscription network;

When the first SCP and/or the second SCP select a charging scheme for the respective call participants, if the LRN corresponding to the call participant is locally queried, the LRN and the queried The character string formed by the MSISDN corresponding to the calling party is used as the new charging number of the calling party, and then the charging area identification information of the new subscription network corresponding to the new charging number is queried according to the second correspondence. According to the charging area identification information of the new subscription network and the current location of the calling participant, the calling participant selects a charging scheme for roaming or local calling.

8. The method of claim 5 or 6, further comprising:

When the current call ends, the first switching device and/or the second switching device respectively send a call end message carrying the call duration to the SCP of the same network;

The first SCP and/or the second SCP calculate the cost of the corresponding call participant's current call according to the selected charging scheme, the received call duration, and other charging related information.

9. A system for implementing a mobile virtual private network (VPN) intelligent service number carrying, comprising: a service control point (SCP) and a switching device;

The SCP is configured to: when the home SCP of the number carried by the number exchanged due to the replacement of the subscription network, register the first correspondence between the number carried by the generation number and the routing address number (LRN) of the new subscription network; and, as a call When the participant's home SCP is triggered, when the VPN service on the SCP is triggered by the switching device, it is determined whether the called number is replaced by the LRN according to whether the LRN corresponding to the called number can be locally queried, and according to The result of the query sends the current call to the switching device;

10. The system of claim 9, wherein

The SCP is configured to send a current call to the switching device by: as a home SCP of a calling number during a call in which a VPN user having a number carrying occurs, the VPN service on the SCP is used by the primary When the first switching device of the network where the number is currently located is triggered, it is determined whether the called number is replaced according to whether the LRN corresponding to the called number can be locally queried. And signing the network, and then sending the current call to the first switching device according to the query result; and, when the home SCP is the called number in the calling process, the VPN service on the SCP is called by the called When the second switching device of the network where the number is currently located is triggered, whether the called number is replaced by the subscription network is determined according to whether the LRN corresponding to the called number can be locally queried, and then the current call is sent according to the query result. The second switching device;

The switching device is configured to connect the received call in the following manner: when the first switching device of the network where the calling number is currently located, the current call sent by the SCP is connected to the current subscription network of the called number. The second switching device; and, when the second switching device of the current subscription network of the called number, connects the current call sent by the SCP to the called number.

11. The system of claim 10, wherein

The SCP is further configured to: determine whether the calling number is changed by the subscription network, and then determine whether the calling number is changed according to the query result, according to whether the local SCP of the calling number is locally queried. Whether the current subscription network of the calling number is the same as the current subscription network of the called number, if the same, the intra-network charging scheme of the group user is selected for the calling number; if not, the main Calling the number to select an inter-network charging scheme of the group user; and calculating an available calling duration of the calling number according to the selected charging scheme and the account balance of the calling number; when the available calling duration is greater than zero The current call is sent to the first switching device.

12. The system of claim 10, wherein

The SCP is further configured to: determine whether the calling number is replaced by the subscription network according to whether the LRN corresponding to the calling number can be locally queried when the home SCP is the called number, and then determine the result according to the query result. Whether the current subscription network of the calling number is the same as the current subscription network of the called number, if the same, the charging scheme of the group user network is selected for the called number; if not, the called party is The number selection group user network charging scheme; and, according to the selected charging scheme and the account balance of the called number, calculating the available call duration of the called number; when the available call duration is greater than zero, Sending the current call to the second switching device.

13. The system of claim 11 or 12, wherein

The switching device is further configured to: send a call end message carrying a call duration to the SCP of the same network at the end of the current call; The SCP is further configured to: calculate a fee for the current call of the call participant corresponding to the SCP according to the selected charging scheme, the received call duration, and other charging related information.

14. A service control point (SCP) for carrying a mobile virtual private network (VPN) intelligent service number, comprising: a storage module, a query module, and a call connection module;

The storage module is configured to: when the SCP is the home SCP of the number carried by the number exchanged by the subscription network, save the first correspondence between the number carried by the generation number and the routing address number (LRN) of the new subscription network ;

The querying module is configured to: when the SCP is used as the home SCP of the calling party, when the VPN service on the SCP is triggered by the switching device, according to whether the LRN corresponding to the called number can be queried in the storage module Determining whether the called number has changed the subscription network;

The call connection module is configured to: send a current call to the switching device according to the query result queried by the query module.

15. The SCP of claim 14, wherein

The query module is configured to determine whether the called number has changed the subscription network by:

When the SCP is used as the home SCP of the calling number in the call process of the VPN user carrying the number, when the VPN service on the SCP is triggered by the first switching device of the network where the calling number is currently located, Whether the LRN corresponding to the called number is queried in the storage module to determine whether the called number is replaced by the subscription network;

At the SCP as the home SCP of the called number in the call process, and on the SCP

When the VPN service is triggered by the second switching device of the current subscription network of the called number, whether the called number is replaced by the subscription network is determined according to whether the LRN corresponding to the called number can be queried locally;

The call connection module is configured to send the current call to the switching device by: when the SCP is used as the home SCP of the calling number, sending the current call according to the query result obtained by the query module by querying And to the first switching device; and when the SCP is the home SCP of the called number, sending the current call to the second switching device according to the query result obtained by the query module by querying.

16. The SCP of claim 15 further comprising a billing module; The querying module is further configured to: when the SCP is used as the home SCP of the calling number, determine whether the calling number is replaced by the subscription network according to whether the LRN corresponding to the calling number can be locally queried;

The charging module is configured to: when the SCP is used as the home SCP of the calling number, determine whether the current subscription network of the calling number obtained according to the query result is the same as the current subscription network of the called called number, If the same, the intra-network charging scheme of the group user is selected for the calling number; if not, the inter-network charging scheme of the group user is selected for the calling number; and, according to the selected charging scheme and the The account balance of the calling number is calculated, and the available call duration of the calling number is calculated.

17. The SCP of claim 15 further comprising a billing module:

The querying module is further configured to: determine, when the SCP is the home SCP of the called number, whether the calling number is replaced by the signing network according to whether the LRN corresponding to the calling number can be locally queried;

The charging module is configured to: when the SCP is the home SCP of the called number, determine whether the current subscription network of the calling number obtained according to the query result is the same as the current subscription network of the called number, if the same And selecting, according to the called number, a charging scheme of the group user network; if different, selecting a charging scheme of the group user for the called number; and, according to the selected charging scheme and the called number Account balance, calculate the available call duration for the called number.

18. The SCP according to claim 16 or 17, wherein

The storage module is further configured to: when the SCP is used as the home SCP of the calling number, register the new charging number consisting of the LRN of the new subscription network and the MSISDN corresponding to the number of the number carried by the number. The second correspondence between the N-digit number and the identification information of the new subscription network and the charging area identification information of the new subscription network; wherein, N is the home network identifier and the attribution of the default MSISDN in the SCP of the original subscription network. The number of digits required for the fee zone;

In the case of the LRN, a character string composed of the LRN corresponding to the call participant and the MSISDN corresponding to the call participant is used as the new charging number of the call participant, and then the new correspondence is queried according to the second correspondence. The charging area identification information of the new subscription network corresponding to the charging number, according to the charging area identification information of the new subscription network and the current location of the calling participant, the charging scheme for the calling participant to select roaming or local calling.

19. The SCP of claim 18, wherein

The charging module is further configured to: calculate a fee for the current call of the call participant corresponding to the SCP according to the selected charging scheme, the length of the call received from the network switching device, and other charging related information.