CN100584089C - Realization method for soft switch equipment managing roaming gateway in NGN network - Google Patents
Realization method for soft switch equipment managing roaming gateway in NGN network Download PDFInfo
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- CN100584089C CN100584089C CN200610080165A CN200610080165A CN100584089C CN 100584089 C CN100584089 C CN 100584089C CN 200610080165 A CN200610080165 A CN 200610080165A CN 200610080165 A CN200610080165 A CN 200610080165A CN 100584089 C CN100584089 C CN 100584089C
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Abstract
The invention relates to a method for using soft exchanger to manage roaming network gate in NGN network, wherein said method comprises that: building the roaming relation of IP sections in soft exchanger; building page at caller and called terminals, soft exchanger based on the roaming relation obtains roaming information, and transmits the roaming information to the charge system. The invention can effectively manage client, and avoid consumption on illegal roaming.
Description
Technical field
The present invention relates to the communications field, particularly relate to the implementation method of Softswitch managing roaming gateway in a kind of NGN network.
Background technology
Network based on soft switch is the next generation communication network (NGN) that proposes after 3G, and it can provide miscellaneous services such as comprising speech, data and multimedia based on open network architecture.Different with traditional network with the technology driving, the network based on soft switch of future generation is the network by business-driven, and its feature is business is separated with calling control, calls out to control and separates with carrying.Business no longer is limited by network carrying type and control mode like this, being convenient to third party's business and novel business inserts fast, terminal can dispose and customize the business of oneself voluntarily simultaneously, makes business really be independent of network, for providing new business to create advantage fast, flexibly, efficiently.
Fig. 1 is the system construction drawing of existing network based on soft switch.As can be seen from Figure 1, the network based on soft switch can be divided into following four layers from network layer: Access Layer, core exchange layer, network control layer and operation layer.
Soft switch (SoftSwitch) equipment is the controlled function entity of next generation network (NGN), and the business that has the real-time requirement for next generation network (NGN) provides calling control and connection control function, is that next generation network is called out and the core of controlling.Softswitch is mainly used in network control layer, finishes functions such as the calling control of voice based on the IP packet network, data, multimedia service and connection management, network resource management, authentication.
(Media Gateway MG) is positioned at Access Layer to media gateway, is playing the part of important role in NGN, and any business all needs media gateway to realize under the control of Softswitch.Media gateway is responsible for the comprehensive access of various terminals or various access networks, such as PSTN, ISDN, ADSL, V5 and 3G network access etc., is " interface gateway " that terminal or terminal network insert the core Media layer.
The network of soft switch operation layer in application server is arranged, in application server, comprise a framework and a plurality of service capability server (SCS), the SCS application server is one or more Service Capability Features (SCF), abstract to function that network provided just, be used to higher layer applications that the ability of accesses network resource and information is provided, in SCS, include charge system SCF, be used for terminal call is chargeed.
Aspect the mobile management of NGN network, the roaming of NGN network support terminal provides the registering functional and the mobile management of terminal, and identification terminal information and set up terminal database is for roaming terminal provides the mechanism of the seamless handoff under heterogeneous networks and the access technology.
To the requirement of mobile management have following some:
Be independent of access network technology: NGN will be by constituting based on the core net of IP technology and the access network of use different access technologies, so require mobile management and access technology to have nothing to do;
Will be based on IP technology: NGN based on IP, mobile management also should be connected good with the IP technology, comprises IPv4 and IPv6;
Roaming between network enabled and do not rely on access style and network management ownership;
The mobility of support terminal, individual and service.
In addition, mobility requirement for support terminal, need realize the function that some are specific at Softswitch, as identification and authentication mechanism, access control and authorization function, location management, paging capability, IP address assignment and management, terminal environments, terminal profile and terminal data rights management, support that the function of different classes of mobile management is mutual.
Because the bearer network of NGN is an IP network, this has just determined the terminal under the NGN not limited by the region, initiates registration by different IP addresses to Softswitch.Existing Softswitch is when carrying out mobile management to terminal roaming, the registration of gateway support dynamic IP, in Softswitch configuration media gateway, needn't specify the IP address of media gateway, only need the log-in password unanimity between Softswitch and the media gateway, media gateway just can be registered on the Softswitch, then, the terminal that disposes under the media gateway just can be called out under soft exchange device controls, and charge system can't obtain the terminal roaming information of this moment.
Though existing scheme has realized the function of media gateway position-movable (roaming), the scope of roaming is uncontrollable, and this has brought problem with regard to the management of giving operator.Because a terminal can be moved the media gateway of oneself between different places, Softswitch can't learn whether the media gateway of terminal moves between two cities or two provinces and cities, this just makes the conversation between two cities or two provinces to be thought local call by the Softswitch charge system, and do not collect wandering fee, to operator cause economically loss and the confusion in the service management.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide the implementation method of Softswitch managing roaming gateway in a kind of NGN network, may further comprise the steps:
Steps A) in the database of Softswitch, sets up the corresponding relation of IP address field numbering and corresponding IP address range thereof, in Softswitch, set up the roaming relationships between each IP address field;
Step B) media gateway under the calling terminal is registered to Softswitch, Softswitch obtains the roaming information of the media gateway under the calling terminal according to the corresponding relation of each IP address field numbering and corresponding IP address range thereof and the roaming relationships between each IP address field, and this roaming information is sent to charge system charges.
Described step B) comprising:
Step B1) Softswitch is according to concerning between the current IP section of the media gateway under the calling terminal and the home IP section, obtains the roaming information of the media gateway under the calling terminal, and this information is sent to charge system.
Described IP section is corresponding with the physics area.
Described step B1) comprising:
Step B11) Softswitch obtains the current IP section of the affiliated media gateway of calling terminal according to the current IP address inquiry IP section of the media gateway under the calling terminal and the corresponding relation of IP address range;
Step B12) Softswitch obtains the home IP section of this media gateway according to the media gateway sign.
Described media gateway is designated gateway name.
Described step B1) comprising:
Step B11 ') whether the current IP segment number of judging the media gateway under the calling terminal equates with the home IP segment number, if equate, then notifies the current roaming pattern of this media gateway of charge system to roam for nothing; Otherwise, continue;
Step B12 ') if the current IP segment number and the home IP segment number of the media gateway under the calling terminal are unequal, then the roaming information with the media gateway under the calling terminal sends to charge system.
Described roaming information comprises roam mode and roaming address.
Described roam mode comprises: do not have roaming, local roaming, roaming inside the province, National roaming, international roaming; Described roaming address comprises the current IP segment number and the home IP segment number of media gateway.
The implementation method of Softswitch managing roaming gateway in the NGN network of the present invention, realized the client is carried out the purpose of effective control, made things convenient for the operation maintenance of operator, and made operator avoid the media gateway economic loss that illegal browse is brought in the IP Packet Based Network.
Description of drawings
Fig. 1 is for being existing system construction drawing based on flexible exchanging network;
Fig. 2 is the business realizing flow chart of the implementation method of Softswitch managing roaming gateway in the NGN network of the present invention.
Embodiment
The present invention is further described in more detail below in conjunction with accompanying drawing 2 and specific embodiment.
The implementation method of Softswitch managing roaming gateway is registered by media gateway under the calling terminal and Softswitch in the NGN network of the present invention, the roaming information that Softswitch obtains media gateway according to the home IP address and the relation between the current IP address of media gateway, and this roaming information sent to charge system, calling terminal and terminal called are set up and are called out, and charge system is chargeed to calling according to roaming information.
In the NGN network of the present invention the business realizing flow chart of the implementation method of Softswitch managing roaming gateway as shown in Figure 2, concrete steps are as follows:
1) in the database of Softswitch, sets up the corresponding relation of IP section and corresponding IP address range thereof;
At first, in Softswitch, in original database, increase is used to store the mapping table of setting up according to the IP segment number and the corresponding IP address range thereof of media gateway.
Concrete grammar is as follows:
Create an IP number table A in the database of Softswitch, the field of this table comprises IP segment number and the pairing IP address range of each IP segment number.Preserve data-base recording among this IP number table A, each the IP segment number in the record is corresponding to one section definite IP address range.
The setting of the IP segment number of IP address range and correspondence thereof also can be customized as required by operator, and Softswitch has the function of the IP address range that each IP section correspondence is set.
For example, IP address range is 192.100.0.0 to 192.100.0.100, and the IP segment number of this IP address range is made as 192.
In embodiments of the present invention, an IP section can be understood as a physics area.For example, a Softswitch is managed the business of Guangzhou, two places, Shenzhen, and South Mountain, Shenzhen is IP section 1, and the Feitian is an IP section 2, and the Guangzhou Milky Way is IP section 3, and the Guangzhou white clouds are IP section 4.Corresponding physics area of each IP section just.
2) in the database of Softswitch, set up roaming relationships between each IP section.
In the database of Softswitch, create a roaming relationships table B, write down the roaming relationships between each IP section, set up the roaming relationships between each IP section in the Softswitch.
In order to reduce the data volume in the table, can only store the roam mode between the IP section that allows roaming in the described roaming relationships table.
If the roam mode between two IP sections is expression in this table not, then represent not allow between these two IP sections roaming.
Can inquire about according to keyword during roam mode between inquiry IP section, the keyword of inquiry can be the numbering of two IP sections will inquiring about.If the result to two IP section roam mode inquiries is NULL, represent the not expression in this table of roam mode between these two IP sections, do not allow roaming between these two IP sections.
Described roam mode comprises: do not have roaming, local roaming, roaming inside the province, National roaming, international roaming.
Operator also can be by configuration and the modification of man-machine interface realization to described IP number table A and roaming relationships table B.
3) media gateway at calling terminal place is registered to Softswitch.
The media gateway at described terminal place is the media gateway that terminal has been registered.This media gateway is registered to the Softswitch of NGN network, and the call request that the media gateway that makes Softswitch can discern this terminal place sends makes it to set up calling with terminal called and is connected, and calls out control.
31) calling terminal sends login request message by the media gateway at place to Softswitch;
Described login request message has comprised the current IP address and the media gateway sign of media gateway.Described media gateway is designated the title of media gateway.
311) if the media gateway at terminal place has been kept in the gateway attribute list, then caller sends login request message by the media gateway at place to Softswitch;
The gateway attribute list is the tables of data that is used for the attribute information of recording medium gateway in the Softswitch database, and it comprises the IP address of media gateway, IP segment number, agreement, information such as port numbers.
312) if the media gateway at terminal place is not kept in the gateway attribute list, then need add media gateway on Softswitch, then, caller sends login request message by the media gateway at its place to Softswitch.
In the method for adding media gateway on the Softswitch is the IP segment number value under the interpolation media gateway in the gateway attribute list.
32) Softswitch obtains the home IP segment number of this media gateway according to media gateway sign inquiry gateway attribute list;
33) Softswitch obtains the current IP segment number of media gateway according to the current IP address inquiry IP number table A of media gateway;
Described current IP address is to comprise in login request message.
34) judge whether the current IP segment number of media gateway equates with the home IP segment number, if equate, then send roaming information to charge system, the current roaming pattern that shows this media gateway sends the response that succeeds in registration to media gateway simultaneously for there not being roaming; Otherwise, continue;
35) if the current IP segment number of media gateway and home IP segment number are unequal, then Softswitch is according to the current IP segment number and the home IP segment number inquiry roaming relationships table B of media gateway, obtain the roam mode of media gateway, and send roaming information to charge system.
351) if the roam mode value that obtains is NULL, illustrate and forbid roaming between these two IP sections, send the registration failure response to media gateway, Softswitch does not allow gateway registration, otherwise, continue;
This step also can be when the roam mode value that obtains be NULL, allows the gateway registration success, and forbids message related to calls to Softswitch, carries out call blocking when the call setup by Softswitch.
352) if the roam mode value that obtains is not NULL, then Softswitch sends roaming information to charge system, the current roaming pattern and the roaming address that show this media gateway, send the response that succeeds in registration to media gateway simultaneously, simultaneously, roam mode and roaming address are recorded in the ticket of charge system.
Described roaming address comprises the current IP segment number and the home IP segment number of media gateway.
4) media gateway under the terminal called is registered to Softswitch.
The registration process of this process and caller is identical, is not described in detail in this.
The registration process of this process and caller is two processes independently, can carry out simultaneously, also can carry out respectively, does not have precedence.
5) set up calling, charge system is chargeed.
51) calling terminal sends called number by media gateway to Softswitch;
52) after Softswitch is received the call request of calling terminal initiation, issue ring back tone to terminal called, and pass ring-back tone to main dialing telephone;
53) terminal called is received off-hook behind the ring back tone, sets up conversation;
54) charge system is chargeed according to roam mode, the roaming address of media gateway.
Roam mode and roaming address are recorded in the ticket of charge system, and charge system calculates the Freight Basis of conversation this time according to roam mode in the ticket and roaming address, charges according to this Freight Basis.
Charge system is a known technology according to the technology that Freight Basis charges, and is not described in detail in this.
Described roaming address comprises the current IP segment number and the home IP segment number of media gateway.
The implementation method of Softswitch managing roaming gateway also can be provided with the IP address range that a media gateway allows in the NGN network of the present invention on media gateway device, if the IP address that disposes or obtain automatically is not in this scope, think that then this IP address is illegal, just forbid roaming.
The implementation method of Softswitch managing roaming gateway makes the operator of NGN network schemer can be on man-machine interface in the NGN network that the present invention proposes, by simple data configuration, realized the client is carried out the purpose of effective control, made things convenient for the operation maintenance of operator, and made operator avoid the media gateway economic loss that illegal browse is brought in the IP Packet Based Network.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. the implementation method of Softswitch managing roaming gateway in the next generation network may further comprise the steps:
Steps A) in the database of Softswitch, sets up the corresponding relation of IP address field numbering and corresponding IP address range thereof, in Softswitch, set up the roaming relationships between each IP address field;
Step B) media gateway under the calling terminal is registered to Softswitch, Softswitch obtains the roaming information of the media gateway under the calling terminal according to the corresponding relation of each IP address field numbering and corresponding IP address range thereof and the roaming relationships between each IP address field, and this roaming information is sent to charge system charges;
Described step B) comprising: step B1) Softswitch is according to concerning between the current IP address section of the media gateway under the calling terminal and the home IP address section, obtains the roaming information of the media gateway under the calling terminal, and this information is sent to charge system;
Described step B1) comprising: step B11) Softswitch obtains the current IP address field of the affiliated media gateway of calling terminal according to the current IP address inquiry IP address field of the media gateway under the calling terminal and the corresponding relation of IP address range; Step B12) Softswitch obtains the home IP address section of this media gateway according to media gateway sign inquiry gateway attribute list.
2. the implementation method of Softswitch managing roaming gateway is characterized in that in the next generation network as claimed in claim 1, and described IP address field is corresponding with the physics area.
3. the implementation method of Softswitch managing roaming gateway is characterized in that in the next generation network as claimed in claim 1, and described media gateway is designated gateway name.
4. the implementation method of Softswitch managing roaming gateway is characterized in that in the next generation network as claimed in claim 1, described step B1) comprising:
Step B11 ') whether the current IP address segment number of judging the media gateway under the calling terminal equates with the home IP address segment number, if equate, then notifies the current roaming pattern of this media gateway of charge system to roam for nothing; Otherwise, continue;
Step B12 ') if the current IP address segment number and the home IP address segment number of the media gateway under the calling terminal are unequal, then the roaming information with the media gateway under the calling terminal sends to charge system.
5. as the implementation method of Softswitch managing roaming gateway in claim 1 or the 4 described next generation networks, it is characterized in that described roaming information comprises roam mode and roaming address.
6. the implementation method of Softswitch managing roaming gateway is characterized in that in the next generation network as claimed in claim 5, and described roam mode comprises: do not have roaming, local roaming, roaming inside the province, National roaming, international roaming; Described roaming address comprises the current IP address segment number and the home IP address segment number of media gateway.
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| CN200610080165A CN100584089C (en) | 2006-05-10 | 2006-05-10 | Realization method for soft switch equipment managing roaming gateway in NGN network |
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| CN105577437A (en) * | 2015-12-23 | 2016-05-11 | 河北远东通信系统工程有限公司 | Master-slave ownership-based AGCF device disaster-tolerant backup method |
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Non-Patent Citations (2)
| Title |
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| NGN终端漫游业务解决方案. 李洪等.电信技术，第10期. 2004 |
| NGN终端漫游业务解决方案. 李洪等.电信技术，第10期. 2004 * |
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