CN101184047B - Message routing method, equipment and system - Google Patents

Abstract

The invention discloses a message routing method, which is applied to the IP network based on the SUA protocol of the user message adaptation layer of the signaling connection control part, and solves the problem that it cannot be correctly implemented when more than two node devices share the signaling point code The message routing problem of the SUA protocol. The method includes: obtaining the SUA message to be processed; determining that the subsystem number in the routing indication information in the SUA message does not belong to the subsystem number of the current node device itself; Corresponding to the node device, the combination of the signaling point code and the subsystem number of the next-hop node device that reaches the destination node device, and according to the combination of the signaling point code and the subsystem number of the next-hop node device, the SUA The message is sent to the corresponding next-hop node device. At the same time, a message routing system and device are also disclosed.

Description

A message routing method, device and system

technical field

The present invention relates to the technical field of communications, in particular to a method, device and system for implementing message routing. the

Background technique

Signaling Connection Control Part User Adaptation Layer Protocol (Signalling Connection Control Part User Adaptation Layer, SUA) is the user adaptation layer protocol of Signaling Connection Control Part (Signalling Connection Control Part, SCCP) in the original No.7 signaling family . The performance of the SUA protocol is completely similar to the SCCP protocol for the upper-layer user protocol, so that the original SCCP upper-layer protocol users can be applied in the Internet protocol (Internet protocol, IP) network without any modification, and some specific details of the SUA protocol Implementation, such as SCLC/SCOC/SCRC and other processes, are similar to SCCP. the

Below are some brief introductions to the SCCP and SUA protocols respectively. the

The SCCP protocol provides connection-oriented and connectionless end-to-end data transmission services for upper-layer protocol users. In the network hierarchical structure, SCCP belongs to the functional layer of the network and transport layer. SCCP can complete the network routing of SCCP between signaling nodes according to the calling and called addresses provided by users, and cooperate with the function of the No.7 signaling network MTP message transmission part. Addressing function, and at the same time, SCCP can also establish connections for upper-layer users, or do not need to establish connections, and transmit user data between signaling nodes. the

One of the main functions of the network layer protocol is the routing function. For example, the IP protocol is based on the source IP address and destination IP address information in the IP message, and routes to the final destination through the IP router in the network hop by hop. Each IP router node selects the address of the next hop according to the IP address information mastered by the local router and forwards the IP message to the next hop. The main principle of the SCCP network routing addressing function is very similar to the IP method, except that SCCP analyzes and finds the next-hop destination address based on the calling and called addresses in the SCCP message. Destination Point Code (DPC), Subsystem Number (SSN) and/or Global Code (GT) in call information. the

The following introduces the key information of SCCP routing addressing:

1) Destination point code (DPC): the address identification of the No.7 signaling network element node, similar to an IP address, usually a 14-bit or 24-bit code, which identifies a certain number in a specific No.7 network. The address of a network element device;

2) Subsystem number (SSN): the logical number of the upper-layer business subsystem served by the SCCP protocol. SCCP can provide services for multiple upper-layer users at the same time, such as wireless MAP, BSSAP, RANAP, etc., or intelligent network INAP, CAP and other services, in order to distinguish these services, the SSN subsystem number identification is introduced;

3) Global code (GT): an address coding format, which can combine GT with DPC to identify the address, thereby ensuring the uniqueness of GT code in the network;

As shown in Figure 1, in the No.7 network, the SCCP signaling nodes can be abstracted as: origin point, relay point, and destination point. SCCP message routing starts from the source point and goes through 0 or more relay points to the final SCCP destination point. the

The SCCP called address can carry DPC, SSN, and GT information. According to the protocol, the following principles can be drawn: the called address information in the routing result of the SCCP message in each node device must contain the next-hop node device DPC; SCCP message must contain SSN in the called address information in the routing result of the destination node device. And, the routing result of the node device includes: DPC+SSN, DPC+GT, DPC+GT+SSN. the

When the current node device selects the route for the SCCP message, if GT translation is required when routing according to the GT, the routing result may include SSN or a new GT. If a new GT is obtained, the next-hop node device performs routing When , GT translation is also required; if the routing result includes DPC and SSN, it indicates that the current node device is the destination of the SCCP message. That is to say, if the called address of the node device receiving the SCCP message is addressed by the SSN, it indicates that the node device is the destination of the SCCP message. the

In the traditional No.7 signaling network, the SCCP protocol layer and the MTP3 protocol layer complete the routing and switching function of the SCCP message, so that the SCCP message can finally reach the destination node. Wherein, the SCCP protocol layer performs GT translation according to the GT code in the SCCP message, finds the signaling point code of the destination node device according to the translation result, and transmits the translated destination node device signaling point code and SCCP message to the MTP3 protocol layer; The MTP3 protocol layer selects an available path to the destination node device according to the destination signaling point code of the next-hop node device, and sends the SCCP message to the destination node device by using the selected path. the

For example: as shown in Figure 3, after the SCCP protocol layer on the signaling point AAA performs GT translation on the SCCP message, the signaling point CCC of the next-hop node device is obtained; the SCCP protocol layer converts the SCCP message and the signal of the next-hop node device The command point code CCC is transmitted to the MTP3 protocol layer, and the MTP3 protocol layer selects a path to reach the signaling point CCC through the signaling point BBB, and sends the message to the MTP3 protocol on the signaling point BBB; the MTP3 protocol on the signaling point BBB It is found that the device of this node is not the final destination of the SCCP message, so a route to the signaling point CCC is selected, and the SCCP message is forwarded to the next hop node until the signaling point CCC; the signaling point CCC receives the SCCP After receiving the message, the MTP3 protocol on the signaling point CCC finds that its own node is the destination node device of the SCCP message, so it uploads the SCCP message to the SCCP protocol for processing. the

In addition, with the application and popularization of softswitch technology, the traditional telecommunication network is developing towards the direction of intercommunication with IP network. Among them, the most critical issue is whether the widely used No.7 signaling can be efficiently and reliably transmitted in the IP network. At present, the IETF has proposed an adaptation protocol of the SCCP layer, that is, the SUA protocol, to provide stronger address mapping and routing functions, as well as simpler management functions. the

The functions provided by the SUA protocol to upper-layer users are similar to the SCCP protocol, but the difference is that the SUA lower-layer transmission is based on the SCTP/IP protocol. In addition, the routing addressing information of the SUA protocol includes DPC/SSN/GT, and IP address and Hostname can also be used for addressing. In this way, compared with the SCCP protocol, the SUA protocol adds routing result types: IP+SSN, IP+GT, IP+GT+SSN, hostname. the

As shown in Figure 2, in an IP network, although the SUA protocol is equivalent to the SCCP protocol for upper-layer user protocols, such as MAP/CAP/RANAP, the lower-layer protocol of the SUA protocol is SCTP, which lacks a network routing protocol similar to MTP3. . the

Moreover, in the evolution process from the traditional No.7 telecom network to the IP network, in order to avoid large-scale repeated investment caused by large-scale replacement of various network element equipment, operators generally adopt the gradual replacement of each network element equipment on the existing network The way. In this way, an application networking situation as shown in FIG. 4 may appear. the

As shown in FIG. 4 , node A is a base station controller (BSC), and the mobile control center (MSC), which was originally accessed by it, is replaced by nodes B, C and D. Nodes A, B, C, and D are interconnected through the SUA protocol. Among them, nodes B and C are media gateways (MG), which are responsible for accessing signaling and media streams, and node D is a media gateway controller (MGC), which is responsible for signaling control and connection of media streams. Because MSC only occupies one signaling point code in practical application, when replacing MSC with MG and MGC, MG and MGC equipment occupy the same signaling point code. the

Node A has an SCTP coupling to node B, and node B has an SCTP coupling to node D; node A has an SCTP coupling to node C, and node C has an SCTP coupling to node D. Among them, the signaling point code of node A is AAA, the signaling point code of nodes B, C and D is BBB, subsystems SSN1 and SSN2 are located on node B, subsystems SSN3 and SSN4 are located on node C, subsystems SSN5 and SSN6 is on the D node. the

After careful analysis and research, the inventor found that in the network similar to Figure 4, because B, C, and D have the same DPC, and because the lower layer protocol of the SUA protocol is SCTP, there is a lack of a network routing protocol similar to MTP3. If the SUA protocol still transmits the SUA message in the manner of the SCCP protocol, the SUA message of the A node can never reach the D node through the B or C node. That is to say, in a communication system, if at least two of the devices share the signaling point code, if the processing method of the SCCP protocol is also followed, when the routing result indicated in the message is the SSN method, but the SSN does not belong to the node If the SSN of the device is not specified, the message is discarded, so the message routing of the SUA protocol may not be implemented correctly. the

Contents of the invention

The embodiment of the present invention is to provide a message routing method, device and system, which can solve the problem that the message routing of the SUA protocol cannot be correctly implemented when there are more than two node devices in the communication system sharing the signaling point code. the

A message routing method provided by an embodiment of the present invention is applied to an IP network based on the SUA protocol of the signaling connection control part user message adaptation layer, including:

Get pending SUA messages;

Determine that the subsystem number in the routing indication information in the SUA message does not belong to the subsystem number of the current node device itself; and,

According to the routing configuration information configured by the current node device, determine the combination of the signaling point code and the subsystem number of the next-hop node device corresponding to the current node device and reach the destination node device, and according to the signal of the next-hop node device Let the combination of the point code and the subsystem number send the SUA message to the corresponding next-hop node device. the

A method for message routing provided by an embodiment of the present invention is applied to an IP network based on the signaling connection control part user message adaptation layer protocol SUA protocol, and the method includes:

Get pending SUA messages;

Judging whether the subsystem number in the routing indication information in the SUA message belongs to the subsystem number of the current node itself;

If not, according to the routing configuration information configured by the current node device, determine the combination of the signaling point code and the subsystem number of the next hop node device corresponding to the current node device to reach the destination node device, and according to the next hop The combination of the signaling point code and the subsystem number of the node device sends the SUA message to the corresponding next-hop node device;

If the combination of the signaling point code and the subsystem number in the routing indication information is the same as the combination of a signaling point code and the subsystem number of the current node itself, the SUA message is sent to the upper layer protocol for processing. the

A message routing system provided by an embodiment of the present invention, the system includes: at least two node devices, wherein,

Each node device is used to determine the signaling point to reach the destination node device according to the configured routing configuration information when the subsystem number in the route indication information in the obtained pending SUA message does not belong to the configured subsystem number code and subsystem number, and according to the combination of the signaling point code and subsystem number of the next-hop node device, send the SUA message to the next-hop node device; if the signaling in the routing indication information The combination of point code and subsystem number is the same as that of one of its own signaling point codes and subsystem numbers, and the SUA message is sent to the upper layer protocol for processing. the

A node device provided by an embodiment of the present invention includes:

The determination unit is used to determine that the subsystem number in the routing indication information in the SUA message to be processed does not belong to the configured subsystem number;

The routing information acquisition unit is used to determine the signaling point code and sub-system number of the next-hop node device to the destination node device according to the configured routing configuration information when the subsystem number in the routing instruction information does not belong to the configured subsystem number. combination of system numbers;

A sending unit, configured to send the SUA message to the corresponding next-hop node device according to the combination of the signaling point code and the subsystem number of the next-hop node device. the

In the embodiment of the present invention, when the routing indication information in the SUA message contains SSN, it is judged whether the combination of the SSN and the signaling point code of the destination node device is the same as the combination of an SSN and the signaling point code of the own node device , in the same situation, consider yourself as the destination node device, otherwise, send the SUA message according to the SSN and signaling point code of the next-hop node device corresponding to the saved destination node device’s SSN and signaling point code To the next hop node device, so as to solve the problem that the current node device cannot transmit the SUA message to the destination node in the case of sharing the signaling point code, avoiding the discarding of the SUA message, thereby avoiding the interruption of the service. the

Description of drawings

Figure 1 is a schematic diagram of SCCP signaling nodes in the existing No.7 network;

Figure 2 is a schematic diagram of the position of the existing SUA protocol in the IP network;

Figure 3 is a schematic diagram of the routing process completed by cooperation of SCCP and MTP3 in the traditional No.7 signaling network;

Fig. 4 is a schematic diagram of the interconnection model of the SUA protocol in the IP network;

Fig. 5 is the route schematic diagram that the embodiment of the present invention introduces path concept;

Fig. 6 is the schematic flow sheet of the embodiment method of the present invention;

FIG. 7 is a schematic structural diagram of a node device according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of another node device according to an embodiment of the present invention. the

Detailed ways

In the embodiment of the present invention, in the IP network based on the SUA protocol, obtain the SUA message to be processed; determine whether the subsystem number in the routing indication information in the SUA message belongs to the subsystem number of the current node device itself, if not According to the routing configuration information configured by the current node device, determine the combination of the signaling point code and subsystem number corresponding to the current node device to reach the destination node device, and according to the signaling point code and subsystem number of the next-hop node device number combination, and send the SUA message to the next-hop node device. If the combination of the signaling point code and the subsystem number in the routing instruction information is the same as the combination of a signaling point code and the subsystem number, the SUA message is sent to the upper layer protocol for processing. the

The SUA message to be processed may be a received SUA message issued by an upper-layer protocol, or may be a received SUA message from an upper-hop node device. the

The routing configuration information may include: the combination of the signaling point code and the subsystem number of the node device related to the current node, and the signaling point code of the next hop node device in each path from the current node device to the relevant node device The first correspondence between the combination of and subsystem number. The node device related to the current node refers to other node devices except the current node. When the subsystem number in the routing instruction information in the SUA message does not belong to the subsystem number of the current node device, it needs to be based on the routing instruction in the SUA message. The combination index of the signaling point code and the subsystem number in the information corresponds to the first correspondence, that is, the combination of the signaling point code and the subsystem number in the routing instruction information in the SUA message is used as the signaling point code of the node device related to the current node Combination index and subsystem number first correspondence relationship, obtain the combination of signaling point code and subsystem number of the next hop node device in each path from the current node device to the relevant node device. the

In addition, when the SUA protocol is used for networking between devices, the concept of a path is introduced. The path refers to the multi-segment connection between the message from the source node through several intermediate nodes to the destination node. The starting point of each connection is the source node or the intermediate node, and the end point is the intermediate node or the destination node. For example, as shown in FIG. 5 , path 1 is from node A to node D through node B, and path 2 is from node A to node D through node C. Moreover, the unique identifier for identifying each node device is a signaling point code and a subsystem number. the

Therefore, the routing configuration information can be implemented using the following two correspondences, namely: the combination of the signaling point code and the subsystem number of the node device related to the current node and the correspondence between the path identifier from the current node device to the related node device relationship, and the corresponding relationship between the path identifier and the combination of the signaling point code and the subsystem number of the next-hop node device. In this way, the path corresponding to the signaling point code and subsystem number in the routing indication information can be obtained first according to the correspondence between the combination of the signaling point code and the subsystem number of the node device related to the current node and the path identifier and then according to the corresponding relationship between the path identifier and the combination of the signaling point code and the subsystem number of the next-hop node device, the obtained path identifier corresponds to the signaling point code and the subsystem number of the next-hop node device. combination. the

Since each node device has at least one node device that is connected to it and the status is available, the SUA message may be divided into several branches after being sent to these node devices, and the node devices in some branches go to the next hop The status of the node device may be interrupted as unavailable for some reason. Therefore, in order to avoid sending an SUA message by selecting a path in an unavailable state, the obtaining of the path identifier corresponding to the combination of the signaling point code and the subsystem number in the routing indication information can be implemented as follows: according to the current node-related The corresponding relationship between the combination of the signaling point code and the subsystem number of the node device and the path identifier, and the corresponding relationship between the path identifier and the path state, select the route indication information from the path identifier whose path state is an available state The path identifier corresponding to the combination of the signaling point code and the subsystem number in . Therefore, at least one path identifier can be selected from the path identifiers whose path status is available, and according to the corresponding relationship between the selected path identifier and the combination of the signaling point code and the subsystem number of the next-hop node device, determine the The combination of the signaling point code and the subsystem number of the next-hop node device corresponding to the selected path identifier. This can improve the efficiency of sending SUA. the

Of course, in order to realize QOS guarantee, if the last selected available path identification includes at least two, the load sharing mode can be adopted to send the SUA message to the corresponding next-hop node device. For example: divide the SUA message into several parts equally according to the number of available paths, and each path transmits a part of the message. The SUA message may also be divided into several parts with different loads according to the number of available paths and the preset path weights, and the available paths with larger weights transmit part of messages with larger loads. When selecting the path identifier, the path identifier may be selected from the path identifiers whose path status is available according to the set path priority or in a random manner. the

The signaling point code may include: time division switching destination signaling point code, or IP signaling point code. the

As shown in FIG. 5 , node A is a source node device, nodes B and C are intermediate node devices, and node D is a destination node device. When the state of node B and node C is available, there are path 1 and path 2 from node A to node D. the

Among them, this embodiment also needs to pre-set the second corresponding relationship between the path identifier and the path state, and the combination of the signaling point code and the subsystem number of the node device related to the current node and the arrival of the current node device to the relevant node device The first corresponding relationship between the combination of the signaling point code and the subsystem number of the next hop node device in the path can be set as: the combination of the signaling point code and the subsystem number of the node device related to the current node and the current node The corresponding relationship between the path identifier of the device reaching the relevant node device, and the corresponding relationship between the combination of the path identifier and the combination of the signaling point code and the subsystem number of the next-hop node device. the

Referring to Figure 6, the specific process of the embodiment of the present invention is as follows:

Step 601: When node A has a SUA message that needs to be sent to node D, and the routing indication information carried in the message, if the routing indication information includes SSN, node A will use the signaling point code and sub The combination of the system number and the corresponding relationship between the current node device and the path identifier of the relevant node device, and the second corresponding relationship between the path identifier and the path state, determine whether the path corresponding to the SSN and the signaling point code in the routing indication information is available status, if it is available, go to step 602. the

Step 602: Node A selects an available path, that is, selects an available path to the destination node device according to the second corresponding relationship between the path identifier and the path state, and if path 1 is selected, according to the signaling between the path identifier and the next-hop node device Correspondence between the combination of point code and subsystem number, obtain the next hop node device of path 1, that is, node B, then use the SUA message according to the combination of the signaling point code and subsystem number of the next hop node device Send to the next hop node B. the

Step 603: After Node B receives the message, if the SSN in the routing instruction information is different from its own, then according to the combination of the signaling point code and the subsystem number of the node device related to the current node and the current node device to reach the relevant The corresponding relationship of the path identifier of the node device determines the path identifier corresponding to the combination of the SSN and the signaling point code, and determines that there is an available path to the destination node device according to the second correspondence between the path identifier and the path state, and then performs path selection, According to the correspondence between the path identifier and the combination of the signaling point code and the subsystem number of the next-hop node device, the combination of the signaling point code and the subsystem number of the next-hop node device is obtained, for example: the selected next-hop node The device is a D node. the

Step 604: Node B sends the SUA message to Node D. the

Step 605: After node D receives the message, if it is determined that the signaling point code in the routing indication information carried by the SUA message is the same as its own signaling point code, and the SSN in the routing indication information belongs to itself, then determine the The node device is the destination node of the SUA message, uploads the SUA message to the upper layer protocol for processing, and ends this process. the

It can be seen from the above embodiments that, for the source node device, the message routing method can be implemented as follows: if the routing indication information in the SUA message received from the upper layer protocol includes the SSN, according to the signaling point of the node device related to the current node The combination of the code and the subsystem number and the first corresponding relationship between the combination of the signaling point code and the subsystem number of the next hop node device in each path from the current node device to the relevant node device, determine the routing indication information The combination of the signaling point code and the subsystem number corresponding to the combination of the signaling point code and the subsystem number in the next hop node device; according to the combination of the signaling point code and the subsystem number of the next hop node device, the The SUA message is sent to the next-hop node device. the

For the intermediate node device, the message routing method can be implemented as follows: when the subsystem number in the routing indication information in the SUA message of the last-hop node device is received is different from its own subsystem number, according to the current node-related The first correspondence between the combination of the signaling point code and the subsystem number of the node device and the combination of the signaling point code and the subsystem number of the next hop node device in each path from the current node device to the relevant node device , determine the combination of the signaling point code and the subsystem number of the next-hop node device corresponding to the combination of the signaling point code and the subsystem number in the routing indication information; according to the signaling point code of the next-hop node device and the subsystem number, and send the message to the next-hop node device. However, in the implementation of the existing SCCP protocol, the processing of the received message is: if the routing result indicated in the message is the SSN mode, that is, when the routing indication information includes the SSN, but the SSN does not belong to the node, the The message is discarded, in other words, the message will not be forwarded again. the

For the destination node device, the method for message routing can be implemented as follows: if the signaling point code in the routing indication information in the received SUA message is the same as its own signaling point code, and the subsystem in the routing indication information When the number is the same as its own subsystem number, the SUA message is sent to the upper layer protocol for processing. the

The forwarding of messages in each network element needs to be based on the network configuration data stored in advance. Take the networking in Figure 4 as an example: the A node device stores the signaling point and SSN information of the destination node B/C/D respectively, and saves the path information to the destination node, for example: the path information to the destination node D includes : The next hop node device is node B/C, and node D can be reached through node B/C. The difference between the embodiment of the present invention and the existing No.7 network addressing mode is: in the existing No.7 network, the MTP3 protocol performs routing addressing according to DPC, and SCCP performs routing addressing according to GT; In the protocol, another addressing method is provided, which can be based on (DPC+SSN) addressing, that is, use DPC+SSN to query the routing configuration information configured by the current node device, and obtain the DPC+SSN of the next-hop node device. And then realize the forwarding. the

And, the message routing system in the embodiment of the present invention includes: at least two node devices, wherein the node devices are used for when the subsystem number in the routing indication information in the SUA message to be processed does not belong to its own subsystem number , according to the routing configuration information configured by the current node device, determine the combination of the signaling point code and the subsystem number of the destination node device corresponding to the current node device, and according to the signaling point code and subsystem number of the next-hop node device The combination of the SUA message is sent to the next hop node device; if the combination of the signaling point code and the subsystem number in the routing indication information is the same as the combination of a signaling point code and the subsystem number of itself, the The SUA message is sent to the upper layer protocol for processing. the

When the node device is a source node device, the SUA message to be processed is a SUA message from an upper layer protocol that needs to be sent to a destination node device; when the current node device is an intermediate node device, the pending SUA message The SUA message is the SUA message from the previous hop node device. the

Referring to FIG. 7 , the node device includes: a judging unit 70 , a routing information acquiring unit 71 , a sending unit 72 and an uploading unit 73 . in,

Judging unit 70, configured to judge whether the subsystem number in the routing indication information in the SUA message to be processed belongs to its own subsystem number, and when the subsystem number in the routing indication information does not belong to its own subsystem number, obtain it from the routing information Unit processing, and when the combination of signaling point code and subsystem number in the routing indication information is the same as one of its own signaling point code and subsystem number, it is processed by the uploading unit;

The routing information acquisition unit 71 is used to determine the combination of the signaling point code and the subsystem number of the next hop node device corresponding to the current node device and reaching the destination node device according to the routing configuration information configured by the current node device;

The sending unit 72 is configured to send the SUA message to the corresponding next-hop node device according to the combination of the signaling point code and the subsystem number of the next-hop node device;

Further, an upload unit 73 may also be included,

The upload unit 73 is used to send the SUA message to the upper layer protocol for processing when the combination of the signaling point code and the subsystem number in the routing indication information is the same as the combination of a signaling point code and the subsystem number of itself . the

Referring to FIG. 8 , a node device provided by an embodiment of the present invention includes: a determining unit 80 , a routing information acquiring unit 81 and a sending unit 82 . in,

A determining unit 80, configured to determine that the subsystem number in the routing indication information in the SUA message to be processed does not belong to its own subsystem number;

The routing information acquisition unit 81 is used to determine the next hop node corresponding to itself and reach the destination node device according to the configured routing configuration information when the subsystem number in the routing indication information does not belong to its own subsystem number Combination of signaling point code and subsystem number of the equipment;

The sending unit 82 is configured to send the SUA message to the corresponding next-hop node device according to the combination of the signaling point code and the subsystem number of the next-hop node device. the

The node device further includes:

The upload unit 83 is used to send the SUA message to the upper layer protocol for processing when the combination of the signaling point code and the subsystem number in the routing instruction information is the same as the combination of a signaling point code and the subsystem number of itself . the

The routing configuration information includes: the corresponding relationship between the combination of the signaling point code and the subsystem number of the node device related to itself and the path identifier of the associated node device, and the signaling between the path identifier and the next-hop node device. Correspondence between combination of point code and subsystem number;

Then the routing information acquisition unit 81 includes:

A path search unit 811, configured to obtain the signaling point code and subsystem number in the routing indication information according to the correspondence between the combination of the signaling point code and the subsystem number of the node device related to itself and the path identifier The path identifier corresponding to the combination of ;

The next-hop node search unit 812 is configured to obtain the signal of the next-hop node device corresponding to the obtained path identifier according to the correspondence between the path identifier and the combination of the signaling point code and the subsystem number of the next-hop node device. Order the combination of point code and subsystem number. the

The routing information acquisition unit 81 also includes:

The available path determining unit 813 is configured to determine that the path status in the path identification obtained by the path finding unit is a path identification in an available state according to the corresponding relationship between the path identification and the path status. the

The node device may further include: a first storage unit, used to save the combination of the signaling point code and the subsystem number of the destination node device and the signaling of the current node device reaching the next hop node device in each path of the destination node device The first correspondence between the combination of point code and subsystem number. the

The node device may further include: a second storage unit, configured to store a second corresponding relationship between the path identifier and the path state. the

It should be understood that: the first storage unit and the second storage unit may be different storage spaces of the same physical storage device, or different physical storage spaces. the

In the embodiment of the present invention, for the case that the routing result of the SUA message is the SSN mode, it is further necessary to judge whether the combination of the SSN and the signaling point code in the SUA message is the same as the combination of an SSN and the signaling point code in the self node device, In the same situation, consider yourself as the destination node device, that is, the landing node, otherwise, according to the routing configuration information configured according to the current node device, determine the information of the next hop node device corresponding to the current node device and reach the destination node device. Combination of command point code and subsystem number, and use the combination of signaling code and subsystem number of the next hop node device to send the SUA message, so as to solve the problem that the same signaling point code cannot be correct in the prior art routing problem. Moreover, before obtaining the next-hop node device identifier, the status of the destination node device may be inquired first, an available path may be selected, and the SUA message may be sent through the next-hop node device of the available path. Therefore, the embodiment of the present invention will not cause service interruption due to the interruption of a certain path, and guarantee service continuity to the greatest extent. Moreover, it can also optimize the load sharing capability of the network through multi-path transmission, so that each node in the network can carry services evenly, and reduce the possibility of failure of some nodes in the network due to heavy load. the

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies thereof, the present invention also intends to include these modifications and variations. the

Claims (15)

1. A message routing method is applied to an IP network based on a signaling connection control part user message adaptation layer (SUA) protocol, and comprises the following steps:

obtaining SUA information to be processed;

determining that the subsystem number in the routing indication information in the SUA message does not belong to the subsystem number of the current node equipment; and the number of the first and second groups,

and determining the combination of the signaling point code and the subsystem number of the next hop node equipment which corresponds to the current node equipment and reaches the destination node equipment according to the routing configuration information configured by the current node equipment, and sending the SUA message to the corresponding next hop node equipment according to the combination of the signaling point code and the subsystem number of the next hop node equipment.

2. The method of claim 1, wherein the obtaining the SUA message to be processed comprises: and receiving the SUA message sent by the upper layer protocol or receiving the SUA message from the previous hop node equipment.

3. The method of claim 1, wherein the routing configuration information comprises:

the method comprises a first corresponding relation between a combination of a signaling point code and a subsystem number of node equipment related to a current node and a combination of a signaling point code and a subsystem number of next-hop node equipment in each path from the current node equipment to the related node equipment, wherein the node equipment related to the current node refers to other node equipment except the current node.

4. The method of claim 1, wherein the routing configuration information comprises:

the corresponding relation between the combination of the signaling point code and the subsystem number of the node equipment related to the current node and the path identification of the current node equipment reaching the related node equipment, and the corresponding relation between the path identification and the combination of the signaling point code and the subsystem number of the next hop node equipment;

the determining the combination of the signaling point code and the subsystem number of the next hop node device corresponding to the current node device and reaching the destination node device includes:

taking the combination of the signaling point code and the subsystem number in the routing indication information in the SUA message as the combination of the signaling point code and the subsystem number of the node equipment related to the current node, and obtaining the path identifier corresponding to the combination of the signaling point code and the subsystem number in the routing indication information according to the corresponding relation between the combination of the signaling point code and the subsystem number of the node equipment related to the current node and the path identifier;

and obtaining the combination of the signaling point code and the subsystem number of the next hop node equipment corresponding to the obtained path identifier according to the corresponding relation between the path identifier and the combination of the signaling point code and the subsystem number of the next hop node equipment.

5. The method according to claim 4, wherein the obtaining the path identifier corresponding to the combination of the signaling point code and the subsystem number in the routing indication information comprises:

and selecting the path identifier corresponding to the combination of the signaling point code and the subsystem number in the routing indication information from the path identifiers with the path states in an available state according to the corresponding relationship between the combination of the signaling point code and the subsystem number of the node equipment related to the current node and the path identifier and the corresponding relationship between the path identifier and the path states.

6. The method according to claim 5, wherein if at least two path identifiers are included, the obtained path state is an available state, and the SUA message is sent to the corresponding next hop node device in a load sharing manner.

7. The method according to claim 5, wherein the path identifier corresponding to the combination of the signaling point code and the subsystem number of the destination node device is selected from the path identifiers whose path states are available according to the set path priority.

8. The method of claim 1, wherein the combination of the signaling point code and the subsystem number comprises: a combination of a time division switching destination signaling point code and a subsystem number, or a combination of an IP signaling point code and a subsystem number.

9. The method according to claim 1, wherein before determining that the subsystem number in the routing indication information in the SUA message does not belong to the subsystem number of the current node device itself, the method further comprises:

and determining that the signaling point code in the routing indication information in the SUA message is the same as the signaling point code of the current node equipment.

10. A message routing method is applied to an IP network based on a signaling connection control part user message adaptation layer (SUA) protocol, and comprises the following steps:

obtaining SUA information to be processed;

judging whether the subsystem number in the routing indication information in the SUA message belongs to the subsystem number of the current node;

if not, according to the route configuration information configured by the current node equipment, determining the combination of the signaling point code and the subsystem number of the next hop node equipment which is corresponding to the current node equipment and reaches the destination node equipment, and according to the combination of the signaling point code and the subsystem number of the next hop node equipment, sending the SUA message to the corresponding next hop node equipment;

and if the combination of the signaling point code and the subsystem number in the routing indication information is the same as the combination of one signaling point code and the subsystem number of the current node, sending the SUA message to a protocol of the upper layer for processing.

11. A system for message routing, the system comprising: at least two node devices, wherein each node device comprises:

the judging unit is used for judging whether the subsystem number in the routing indication information in the SUA message to be processed belongs to the configured subsystem number or not, when the subsystem number in the routing indication information does not belong to the configured subsystem number, the routing information is processed by the routing information acquiring unit, and when the combination of the signaling point code and the subsystem number in the routing indication information is the same as the combination of one configured signaling point code and the subsystem number, the signaling point code and the subsystem number are processed by the uploading unit;

a routing information obtaining unit, configured to determine, according to configured routing configuration information, a combination of a signaling point code and a subsystem number of a next hop node device that reaches a destination node device;

a sending unit, configured to send the SUA message to the corresponding next hop node device according to a combination of the signaling point code and the subsystem number of the next hop node device;

and the uploading unit is used for sending the SUA message to the upper layer protocol processing.

12. A node apparatus, comprising:

the determining unit is used for determining that the subsystem number in the routing indication information in the SUA message to be processed does not belong to the configured subsystem number;

a routing information obtaining unit, configured to determine, according to configured routing configuration information, a combination of a signaling point code and a subsystem number of a next hop node device that reaches a destination node device when a subsystem number does not belong to a configured subsystem number in the routing indication information;

and the sending unit is used for sending the SUA message to the corresponding next hop node equipment according to the combination of the signaling point code and the subsystem number of the next hop node equipment.

13. The node apparatus of claim 12, wherein the node apparatus further comprises:

and an uploading unit, configured to send the SUA message to a previous layer of protocol processing when a combination of the signaling point code and the subsystem number in the routing indication information is the same as a configured combination of one signaling point code and the subsystem number.

14. The node device of claim 13, wherein the routing configuration information comprises: the method comprises the steps that the combination of a signaling point code and a subsystem number of node equipment related to the node equipment corresponds to the path identification of the node equipment reaching the related node equipment, and the corresponding relation between the path identification and the combination of the signaling point code and the subsystem number of next hop node equipment is obtained, wherein the related node equipment refers to other node equipment except the node equipment;

the routing information obtaining unit includes:

a path searching unit, configured to obtain, according to a correspondence between a combination of the signaling point code and the subsystem number of the node device related to the path searching unit and a path identifier, a path identifier corresponding to the combination of the signaling point code and the subsystem number in the routing indication information;

and the next hop node searching unit is used for obtaining the combination of the signaling point code and the subsystem number of the next hop node device corresponding to the obtained path identifier according to the corresponding relation between the path identifier and the combination of the signaling point code and the subsystem number of the next hop node device.

15. The node device according to claim 14, wherein the route information acquisition unit further includes:

and the available path determining unit is used for determining the path state in the path identifiers obtained by the path searching unit as the path identifier in the available state according to the corresponding relation between the path identifiers and the path states, and the path identifier in the available state is used for being provided for the next hop node searching unit to use.

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