CN1889610B - Large-capacity distributing signalling processing equipment and method thereof - Google Patents

Abstract

The invention relates to communication technology, and discloses a large-capacity distributed signaling processing device and a method thereof, which reduce the memory requirement of the signaling processor and improve service distribution efficiency. In the present invention, a link set corresponds to only one service processor, and the corresponding relationship between the link set and the service processor is stored in the signaling processor. When the signaling processor processes the signaling, it Find the corresponding link set through the road ID, and then find the corresponding service processor, and send the signaling to the service processor.

Description

Large-capacity distributed signaling processing device and method thereof

technical field

The invention relates to communication technology, in particular to a large-capacity distributed signaling processing method in a network in which bearer and control are separated.

Background technique

The current telecommunication network is a network designed mainly for telephone communication. With the rapid development of Internet services, data communication services have grown rapidly, and the volume of data communication services has exceeded that of telephone communications. The next generation network (Next Generation Network, referred to as "NGN") will be a network based on data communication and packet switching technology, using new digital technology to support various types of communication services, including telephone, video conferencing And so on real-time communication business.

In the NGN network, it is also necessary to provide integrated services digital network (Integrated Services Digital Network, referred to as "ISDN") service.

The key technology of NGN network is Softswitch (Softswitch). Softswitch forms a layered and fully open system framework, so that each operator can adopt a suitable network solution according to its own needs, such as Internet Protocol (Internet Protocol, referred to as "IP"), asynchronous transfer mode, intelligent Network and time-division multiplexing, etc., while making full use of existing resources, find your own network foothold. Among them, the IP gateway enables the operator to use the existing telephone switching network to transmit these media streams on the IP network.

The current IP gateway has realized the separation of business, business control and signaling. The IP gateway consists of three parts: Signaling Gateway (Signaling Gateway, "SG"), Media Gateway (Media Gateway, "MG") and media Gateway Controller (Media Gateway Controller, referred to as "MGC").

SG is responsible for processing signaling messages, terminating, translating or relaying them; MG is responsible for processing media streams, packing media streams from the narrowband network to the IP network or unpacking them from the IP network and sending them to the narrowband network; MGC is responsible for MG registration and management of resources, and call control.

The signaling gateway SG and the media gateway controller MGC generally use the Signaling Transport (SignallingTransport, referred to as "SIGTRAN") protocol stack for communication, and the SIGTRAN protocol stack includes Integrated Services Digital Network Q.921 User Adaptation (ISDN Q.921-User Adaptation, referred to as "IUA"), link access protocol version 5 user adaptation (LAPV5 User Adaptation, referred to as "V5UA"), message transmission part 2 user adaptation (MTP2 User Adaptation, referred to as "M2UA") and other user adaptation protocols.

When a link fails, the central processing unit (Central Processing Unit, referred to as "CPU") of the signaling gateway will use the link access protocol version 5 (Link Access Protocol for V5, referred to as "LAPV5"), Q921 protocol or message transmission part 2 (Message Transfer Part 2, referred to as "MTP2") protocol detects the fault, and actively reports to V5UA, IUA or M2UA, and then notifies MGC through IP connection, so that MGC can quickly know the status of the corresponding signaling link.

The standard networking for providing ISDN services in the NGN network is shown in Figure 1, in which the H.248 protocol is applied between the MG and the softswitch.

After the MG processes Q.921, it transmits the Q.931 message to the softswitch through the IUA, and the softswitch performs ISDN signaling service processing, and then controls the MG through H.248 or Media Gateway Controller Protocol (MGCP for short). Make a call to the property on . The IUA protocol stack is shown in Figure 2.

In the existing implementation, taking the ISDN service provided by the NGN network as an example, multiple IUA links or V5UA links are established between the softswitch and the MG, and these IUA links are composed of one or more IUA link sets. All the IUA links in the IUA link set serve a group of ISDN interfaces. The signaling in this group of ISDN interfaces can be sent through any IUA link in the corresponding IUA link set, and multiple IUA links in one IUA link serve as mutual backup and load sharing.

In order to adapt to large-capacity processing, softswitch or MG can be decomposed into signaling processor and service processor. The signaling processor and service processor are located in different processors. At the same time, the signaling processor and service processor are also distributed processing. Signaling processing and service processing are distributed on multiple processors, as shown in FIG. 3 .

Service processing is distributed on different service processing boards according to ISDN access lines, and signaling processing is distributed according to IUA links. That is to say, each signaling processor only processes signaling from fixed IUA links. After the sent signaling, the service message needs to be distributed to the correct service processor for processing.

In the above example, each signaling processor stores global ISDN interface distribution information, recording the service processor corresponding to each ISDN interface. The signaling processor queries the ISDN interface distribution information according to the ISDN interface identifier in the sent signaling, obtains the corresponding service processor, and then correctly distributes the signaling to the corresponding processor for service processing. Refer to Figure 4 for the ISDN interface distribution information queried by the signaling processor.

The same is true for the distribution of service interfaces and service processing modes of other services provided by the NGN network.

In practical applications, the above solution has the following problems: the signaling processor requires a large amount of memory support, and the efficiency of service distribution is low.

The main reason for this situation is that the NGN network is required to support a large number of service interfaces, and each signaling processor needs to store global service interface distribution information, which has a large amount of information.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a large-capacity distributed signaling processing device and its method, so that the memory requirement of the signaling processor is reduced and the efficiency of service distribution is improved.

To achieve the above object, the present invention provides a large-capacity distributed signaling processing device, which includes at least one first-type module with signaling distribution function and at least two second-type modules with signaling processing function, the The first type of module is connected to at least one link set, each link set contains at least one link, and each link set is provided with a link set identifier;

The corresponding relationship between each of the link sets and each of the second-type modules is preset in the first-type modules, wherein each of the link sets corresponds to only one of the second-type modules;

The module of the first type is further configured to obtain the identifier of the link set that transmits the signaling after receiving the signaling from the link set, and search for the uniquely corresponding first link set corresponding to the link set in the corresponding relationship. a second-type module, and distribute the signaling to the second-type module.

Wherein, each of the second-type modules corresponds to one or more link sets.

In addition, the device is a soft switch or a media gateway, the first type of module is a signaling processor, and the second type of module is a service processor.

In addition, the signaling is ISDN signaling, and the link set is an ISDN Q.921 user adaptation link set.

In addition, the signaling is V5.2 signaling, and the link set is a link access protocol version 5 user adaptation link set.

The present invention also provides a large-capacity distributed signaling processing method, which is applied to the above-mentioned equipment and includes the following steps:

Pre-setting the corresponding relationship between the link set and the second type of module in the first type of module, wherein each link set corresponds to only one second type of module;

When the first type of module receives signaling from the link set, it obtains the identifier of the link set that transmits the signaling, and searches for the second type uniquely corresponding to the link set in the corresponding relationship module, and distribute the signaling to the second type of module.

Wherein, the identification of the link set transmitting the signaling is obtained through the following steps:

The module of the first type obtains the identifier of the link that transmits the signaling, and queries the identifier of the link set where the link is located accordingly.

In addition, in the method, the corresponding relationship between the link identifier and the link set identifier is preset in the first type of module.

Furthermore, in the method, each of the second-type modules corresponds to one or more link sets.

Through comparison, it can be found that the main difference between the technical solution of the present invention and the prior art is that a link set can only correspond to one service processor, and the corresponding relationship between the link set and the service processor is stored in the signaling processor. When the processor processes the signaling, it finds the corresponding link set according to the link identifier carried in the signaling, then finds the corresponding service processor, and sends the signaling to the service processor

The difference in this technical solution has brought obvious beneficial effects, that is, because the signaling processor only needs to save the corresponding relationship between the link set and the service processor, instead of all the service interfaces and service processors in the known technology The corresponding relationship, and a link set can correspond to hundreds or thousands or even tens of thousands of service interfaces, so the memory required in the signaling processor is greatly reduced.

Because the corresponding relationship is greatly simplified, the search operation in the corresponding relationship is also greatly accelerated, improving the efficiency of service distribution.

Description of drawings

Fig. 1 is the standard networking structure diagram that provides ISDN service in NGN network in the prior art;

Fig. 2 is a schematic diagram of the IUA protocol stack in the prior art;

Fig. 3 is a schematic diagram of the distribution of signaling processing and service processing on multiple processors in the prior art;

FIG. 4 is a schematic diagram of ISDN interface distribution information in the prior art;

Fig. 5 is a schematic diagram of service interface distribution information in the present invention;

FIG. 6 is a schematic structural diagram of a large-capacity distributed signaling processing device according to a first embodiment of the present invention;

Fig. 7 is a flowchart of a large-capacity distributed signaling processing method according to the second embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

The core of the present invention is to divide a plurality of link sets between the soft switch and the MG according to the actual service capacity, and distribute a large number of service interfaces on these link sets. The service interfaces on a link set are all uniformly corresponding to one Processing on the service processor. The signaling processor queries the link set information according to the link identifier carried by the signaling, and knows the service processor corresponding to the service interface on which it is carried, and then correctly distributes the signaling to The business processor performs business processing. For information on the distribution of business interfaces, see Figure 5.

The structure of the large-capacity distributed signaling processing device according to the first embodiment of the present invention is shown in FIG. 6 . The device is MG, which includes a signaling processor (at least 1) identified as 00 and two service processors (at least 2) identified as 00 and 01 respectively. It is also assumed that the MG serves 16,000 service interfaces and provides 80 links to serve these service interfaces.

All link selections are equally divided into 4 link sets, which are marked as 00, 01, 02, and 03 respectively. When a signaling comes in from the service interface, the link set identifier of the link that the signaling passes through will be attached to the signaling.

Among them, the signaling processor 00 is connected to the four link sets, and the service processor 00 is set to correspond to the link set 00, and the service processor 01 is corresponding to the link sets 01-03, and then these correspondences are saved in Signaling processor 00.

In addition, the present invention adds constraints to the corresponding relationship between link sets and service processors, that is, each link set corresponds to only one service processor.

To simplify the description, the device shown in FIG. 6 only includes one signaling processor and two service processors. When there are more signaling processors and service processors, the solution of the present invention can also be used.

For the signaling processing method of the device, refer to the second embodiment.

The large-capacity distributed signaling processing method according to the second embodiment of the present invention is shown in FIG. 7 . Using the MG shown in Figure 6, it is also assumed that there are 16,000 service interfaces and 80 links, which are divided into 4 link sets (identified as 00-03) on average, and the signaling processed is ISDN Signaling, correspondingly, the link in the MG is called the IUA link.

In step 701, the identifiers of the 80 IUA links in the device are set to 0000-0019, 0100-0119, 0200-0219, and 0300-0319 respectively, wherein the first two numbers of the IUA link identifiers are respectively related to the IUA link set To identify the correspondence, this correspondence is preset in the signaling processor 00, and there are four correspondences in total.

In step 702, set the IUA link set 00 to correspond to the service processor 00, and the IUA link sets 01-03 to correspond to the service processor 01, and store this correspondence in the memory of the signaling processor 00. four correspondences.

In step 703 , the ISDN signaling sent from the service interface 1 is transmitted to the signaling processor 00 through the IUA link 0301 . The information 0301 of the IUA link identifier is also sent to the signaling processor 00 together.

In step 704, the signaling processor 00 acquires the IUA link ID from which the ISDN signaling comes, and obtains the IUA link ID 0301.

In step 705 , according to the correspondence between the IUA link and the IUA link set preset in the signaling processor 00 , it is found that the IUA link 0301 corresponds to the IUA link set 03 .

In step 706, from the identifier 03 of the IUA link set obtained in step 705, the signaling processor 00 inquires about the corresponding relationship between the IUA link set and the service processor, and obtains that the corresponding service processor ID is 01.

For the two query tasks in step 705 and step 706, that is, two query tasks are performed in the four pieces of corresponding information. If the existing technology is used, the corresponding relationship between the 16,000 interface IDs and the service processors 00 and 01 can be queried directly by the identifier 1 of the service interface that sends the signaling, and the corresponding service processor is 01, that is, 16,000 pieces of corresponding information Make a query in . Obviously, the signaling distribution efficiency of the present invention is much higher. Also much fewer correspondences are stored, so the memory requirements for the signaling processor 00 are much lower.

In step 707, the signaling processor 00 sends the signaling to the service processor 01 for processing. The release of the signaling is completed.

The processing devices in the above embodiments all take MG as an example, and those skilled in the art can understand that the same technical solution can also be used for softswitches. Similarly, in the above embodiments, the processing of ISDN signaling is taken as an example , for processing other signaling such as V5.2 signaling, the method is the same, where the division of link sets and the corresponding relationship between link sets and signaling processors and service processors are the same for V5UA links Be applicable.

Although the present invention has been illustrated and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the present invention. The spirit and scope of the invention.

Claims (9)

1. large-capacity distributing signalling processing equipment, it is characterized in that, comprise at least one first kind module and at least two second generic modules with signaling process function with signaling distribution function, described first kind module is connected with at least one link set, each link set comprises at least one link, and each link set is provided with a link set identification;

Set in advance the corresponding relation of each described link set and each described second generic module in the described first kind module, wherein only corresponding described second generic module of each described link set;

After described first kind module also is used for receiving signaling from described link set, obtain the sign of the link set of this signaling of transmission, and in described corresponding relation, search this link set second generic module of unique correspondence, and this signaling is distributed to this second generic module.

2. large-capacity distributing signalling processing equipment according to claim 1 is characterized in that, the corresponding one or more link set of each described second generic module.

3. large-capacity distributing signalling processing equipment according to claim 1 and 2 is characterized in that, described equipment is soft switch or media gateway, and described first kind module is a signal processor, and described second generic module is an operational processor.

4. large-capacity distributing signalling processing equipment according to claim 3 is characterized in that, described signaling is the integrated services digital network signaling, and described link set is the Q.921 adaptive link set of user of integrated services digital network network.

5. large-capacity distributing signalling processing equipment according to claim 3 is characterized in that, described signaling is the V5.2 signaling, and described link set is the adaptive link set of links and accesses protocol version 5 users.

6. a large-capacity distributing signalling processing method is applied to the described equipment of claim 1, it is characterized in that, comprises following steps:

The corresponding relation of the link set and second generic module is set in advance, wherein only corresponding one second generic module of each link set in first kind module;

When described first kind module when described link set is received signaling, obtain the sign of the link set of this signaling of transmission, and in described corresponding relation, search this link set second generic module of unique correspondence, and this signaling is distributed to this second generic module.

7. large-capacity distributing signalling processing method according to claim 6 is characterized in that, obtains the sign of the link set of the described signaling of transmission by following steps:

Described first kind module is obtained the sign of the link of the described signaling of transmission, and inquires about the sign of the link set at this link place in view of the above.

8. large-capacity distributing signalling processing method according to claim 7 is characterized in that, the corresponding relation of described chain line and link set identification sets in advance in described first kind module.

9. according to each described large-capacity distributing signalling processing method in the claim 6 to 8, it is characterized in that the corresponding one or more link set of each described second generic module.

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