CN1258902C - Multiple-signalling point and multiple-protocal method - Google Patents

Abstract

The present invention discloses an implementing method of multi-signaling points and multi-protocol. In the method, a plurality of different network plane identifiers on one physical signaling point are introduced to identify different logical signaling points in the same physical signaling point; a communication protocol can be optionally selected and used for each logical signaling point, and thereby, the method of multi-signaling points and multi-protocol between two physical signaling points is realized. The method of the present invention solves the matching communication problem among signaling points in the field of communication, smooth upgrade can be carried output on the existing hardware system, and extra hardware investment does not need; in addition, a large quantity of physical signaling points are saved, and the load carrying capacity of signaling points is improved.

Description

A Realization Method of Multiple Signaling Points and Multiple Protocols

Technical field:

The present invention relates to the problem of mutual coordination and communication between signaling points in the field of communication, in particular to a method for realizing multiple logical signaling points on one physical signaling point, and can realize the coexistence of different logical signaling points on the same physical signaling point. protocol standard.

Background technique:

In the current No. 7 signaling network structure, due to the limitation of the circuit identification code (Circuit Identification Code--CIC) length of 12 bits and the length of the signaling link selection code (Signaling Link Selection--SLS) of 4 bits, the two The maximum number of circuits that can be carried between each signaling point (Signaling point-SP) is 4096, and the maximum number of optional signaling links is 16. With the popularity of No. 7 signaling, the business volume using No. 7 signaling continues to increase. The above-mentioned restrictions on the number of circuits and signaling links carried between two signaling points cannot fully meet the needs of online traffic. . In order to solve this problem, the industry proposes a method to increase the transmission rate of the signaling link between two signaling points, such as using a 2Mbit/s high-speed signaling link to replace the original 64Kbit/s signaling link, making the theoretical The load that each high-speed signaling link can carry is dozens of times that of the original 64Kbit/s signaling link, although this can greatly increase the load that the signaling link can carry, but due to the two physical signaling links The signaling relationship between order points remains unchanged, so the number of circuits that can be carried between them is still limited by the length of the CIC, so the problem of insufficient number of circuits is not solved.

There are two common standards for communication protocols between signaling points in existing equipment: ITU-T standard and ANSI standard. Towards. On the basis of the same physical signaling point device, there is a requirement to open two office directions with different protocol standards at the same time, which cannot be realized in most existing devices.

Invention content:

The purpose of the present invention is to solve the shortcoming that the number of circuits that can be carried between two SPs is limited by 4096 and the number of signaling links is no more than 16, and the current limitation that most equipment can only provide a single protocol standard provides A flexible and effective method, so that the number of signaling links and the number of circuits that can be carried increase linearly without too many changes to the hardware facilities of existing equipment, and at the same time realize the message processing and signaling network Coexistence and processing of multiple protocols on routing management.

The processing steps of the realization method of multi-signaling point multi-protocol of the present invention are as follows:

The first step, the configuration of signaling data

1. According to the number of all office directions of the physical signaling point at the local end, set up a virtual network plane, and each virtual network plane corresponds to a unique network identifier;

2. Set the signaling point code used on each virtual network plane;

3. According to the configuration of the local office, set the applied communication protocol, signaling point encoding format and network identifier of the virtual network plane of the opposite end in the office direction data of the opposite end office;

4. Configure link groups and links for all office directions of the signaling point at the local end;

The second step is the processing flow of user data

1. Determine whether the message is initiated by the signaling point of the local end; if it is sent by the local end, it will dynamically select from the available virtual network plane of the local end, and determine the corresponding network identifier. The link of the peer message obtains the network identifier to which it belongs;

2. Determine the source address code and destination address code, office route number, communication protocol, link number and module number of the link according to the network identifier described in the message;

3. Encoding is performed according to the protocol category of the virtual network plane;

4. The encoded user data is sent and received on the selected physical link.

Adopting the method of the present invention breaks through the original limitation on the number of circuits and signaling links, and achieves the effect of greatly increasing the number of effective circuits and signaling links supported under the condition that signaling messages can be processed normally A large number of signaling processing functions can be smoothly added without changing the original investment hardware equipment, which effectively improves the load capacity of signaling equipment, increases the types of supported protocols, and effectively provides signaling equipment with different protocols. Good access is achieved, thereby saving a lot of physical signaling point settings and improving the load carrying capacity of signaling points.

Description of drawings:

Fig. 1 is the overall flowchart of the method for realizing multi-signaling point multi-protocol of the present invention;

Fig. 1a is a flowchart of signaling data configuration;

Figure 1b is a flowchart of message sending and receiving;

Fig. 2 is the schematic diagram that this end carries out message transmission and reception with global code (Global Title--GT) addressing mode in the embodiment of the present invention;

Fig. 3 is the principle diagram that this end carries out message sending and receiving in the embodiment of the present invention with destination signaling point code (Destination Point Code--DPC)+subsystem number (Subystem Number-SSN) addressing mode;

Detailed ways:

The method for realizing multi-signaling points and multi-protocols of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

The application of the present invention in the switching system will be described in detail below. The hardware part can be composed of the basic components of the switch, and the function of multi-signaling point coding can be added smoothly without making major changes to the existing hardware equipment during implementation.

The realization of multi-signaling points and multi-protocol functions is mainly concentrated in the MTP-L3 layer, while the TCAP layer of the Signaling Connection Control Part (SCCP) and the Transaction Capability Application Part (TCAP) and the corresponding The user layer also needs to be modified accordingly to realize the transfer of parameters between the upper and lower layers and the change of the interface.

The third level of MTP-L3 is equivalent to the third layer network management layer of OSI, which is divided into two main modules: signaling message processing (SMH) and signaling network management (SNM). Signaling network management changes the routing of message processing, thereby changing the connection structure between signaling points and the network; at the same time, message processing is also the transmitter of network management messages.

In order to distinguish different protocols in the signaling network, in the configuration of the office data, the protocol and the encoding format of the signaling point that the office belongs to will be marked, and the message processing module will first identify the protocol of the message for messages in different directions The type is then decoded and sent to the user layer of the different protocols by marking the protocol type of the message. In the message routing function, the message from the user layer must first distinguish the protocol and encoding type (14 or 24 bits) of the message, and then re-encode and send the message according to different situations.

In the signaling network management, each signaling business management module first distinguishes the protocol process and signaling messages by identifying the protocol type, ensuring the complete cooperation of various protocols and signaling.

With reference to the process flow of signaling data configuration in the method of the present invention shown in accompanying drawing 1a, by introducing the network plane number (that is, the network identifier of the network plane) to distinguish the different office directions to which the same signaling point code belongs, the network plane The number corresponds to the office direction of the signaling network, and has only local meaning, but is invisible to the end office, and its meaning has nothing to do with the voice network plane. The message processing part can support eight signaling network planes at the same time, and each signaling network plane number supports two signaling point encoding formats of 14 bits or 24 bits.

With reference to the method of the present invention shown in accompanying drawing 1b, message sending and receiving process, in the operation access process of destination signaling point data, because each destination signaling point code DPC is all associated with corresponding network plane number, can According to the DPC and the network identifier symbol to obtain the office number, the source signaling point code OPC, etc., you can also add the subsystem number SSN to block and unblock the corresponding subsystem; when the input parameter contains CIC, you can also get the corresponding module number, office route number, link number, etc. In this way, for the same destination signaling point code, different office network identifiers can be configured to correspond to multiple signaling point codes of the local end. From the perspective of the destination point, the local end is composed of multiple signaling point codes. The office direction corresponds to multiple signaling points, and its processing process is normal signaling message processing, which does not change because the actual physical location of multiple signaling point codes is on the same signaling point. But for the local end, in the data search process, it is necessary to realize the correct transmission and processing of the message through the AND operation of the signaling point code and the network identifier.

When the upper-layer user sends a message to the opposite end, the destination address information provided can be GT code or DPC+SSN. When the destination address is a GT code, the SCCP layer implements the translation of the GT code, and the result returns the corresponding office route number and new destination address code; for the message flow initiated by the local end, the database will be called to obtain the corresponding destination address The network identifier that should be used currently, and then use the network identifier to obtain the office route number and link number required to send the message.

Since the addressing of all signaling points can basically be summarized by using the two addressing methods of DPC+SSN and GT coding in the processing of different user business parts, the process of sending and receiving messages can be divided into four types model:

Local sending (addressing mode is GT), local receiving (addressing mode is GT), local sending (addressing mode is DPC+SSN) and local receiving (addressing mode is DPC+SSN):

1. The local end sends (the addressing mode is GT):

Referring to Figure 2, first configure multiple network identifiers for the local end to correspond to multiple signaling point codes. For a specific purpose GT code, if you need to use multiple signaling point codes at the local end to connect to it, Then configure multiple adjacent office routes to connect to it in the office route data of the GT. The destination signaling point codes of each office route are the same, and different identifiers are set for each office route to distinguish multiple signaling points at the local end. coding.

When sending a message, when the destination address of the opposite end is the GT, through the call of the database, it will be dynamically selected according to the principle of resource round selection, and the currently required identifier among all the network identifiers corresponding to the GT will be returned, and then obtained The local GT code corresponding to the network identifier is sent as the source address of the message. The SCCP layer obtains the destination signaling office of the message through the translation of the GT, and then obtains the signaling link required to send the message. Messages are sent on the signaling link.

2. The local end sends (the addressing mode is DPC+SSN):

Referring to Figure 3, when the addressing mode is DPC+SSN, for a specific DPC, multiple adjacent office routes are also configured in the office route data configuration, and the destination signaling point code of each office route is the DPC , setting multiple different network identifiers at the same time.

When sending a message, at the same time, according to the principle of round-robin, obtain the currently required identifier for the same DPC, and then take out the corresponding OPC as the source signaling point code of the message according to this network identifier, and at the same time obtain the corresponding OPC for the DPC Configure the signaling office direction and signaling link corresponding to the network identifier.

3. Receive at the local end (addressing mode is GT):

See Figure 2, the office data configuration is the same as that sent by the local end (the addressing mode is GT);

When receiving a message from the remote end, it will obtain the office direction of the link carrying the message and the network identifier configured for the office direction. When the local end sends a message back, use the network identifier to obtain the GT code of the local end As the source address of the message, the destination address is filled with the source address of the received message, and then the message is sent back to the original office.

4. Receive at the local end (addressing mode is DPC+SSN):

See Figure 3, the office data configuration is consistent with that sent by the local end (the addressing mode is DPC+SSN);

When receiving a message from the remote end, it will obtain the office to which the link carrying the message belongs and the network identifier configured for the office. The source address of the message, the destination address is filled with the source address of the received message, and then the message is sent back to the original office.

In order to make the number of circuits carried by two SPs exceed 4096 and the number of signaling links exceed 16 at the same time, the present invention provides a multi-signaling point encoding function in the same network indicator, thereby effectively solving the above-mentioned number of circuits and signaling links. The problem of insufficient number of links; between two physical signaling points, multiple office directions coexist through the signaling relationship between different logical signaling points, thus breaking through the original number of pairs of circuits and signaling links number limit. For the requirement of setting up two office directions with different protocol standards on the basis of the same physical signaling point device, since one physical signaling point contains multiple logical signaling points, and the protocol adopted by each logical signaling point Standards can be configured separately, so the multi-protocol communication between physical signaling points realized by the present invention can effectively deal with the coexistence problem of these two protocols.

Claims (3)

1. an implementation method of multiple signaling points and multiple protocols, characterized in that, the steps for realizing the method are: The first step, the configuration of signaling data 1) Set up a virtual network plane according to all office directions of the physical signaling point at the local end, and each virtual network plane corresponds to a unique network identifier; 2) Set the signaling point code used on each virtual network plane; 3) Set the applied communication protocol, signaling point encoding format and network identifier of the virtual network plane of the opposite end in the office direction data of the opposite end office according to the configuration of the local end office; 4) Configure link groups and links for all office directions of the signaling point at the local end; The second step is the processing flow of user data 1) Determine whether the message is initiated by the signaling point of the local end; if it is sent by the local end, it will dynamically select in the available virtual network plane of the local end, and determine the corresponding network identifier; if it is received by the local end, it will The link of the peer message obtains the network identifier to which it belongs; 2) Determine the source address code and destination address code, office route number, communication protocol, link number and module number of the link according to the network identifier described in the message; 3) encoding according to the protocol category of the virtual network plane; 4) The encoded user data is sent and received on the selected physical link. 2. the realization method of a kind of multi-signaling point multi-protocol according to claim 1 is characterized in that, in the described second step, the addressing mode of local end signaling point has following two kinds: 1) Addressing with global code; 2) Addressing is performed by destination signaling point code + subsystem number. 3. the realization method of a kind of multi-signaling point multi-protocol according to claim 1, is characterized in that, in the first step, the signaling point encoding format on the network plane comprises 14 signaling point encoding formats, 24-bit signaling point encoding format.

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