WO2003101050A1

WO2003101050A1 - A completely distribution management method for realizing signaling interworking in width and narrow band network

Info

Publication number: WO2003101050A1
Application number: PCT/CN2003/000386
Authority: WO
Inventors: Jia Wang; Ming Lin; Minhua Liu
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2002-05-27
Filing date: 2003-05-23
Publication date: 2003-12-04
Also published as: CN1463116A; AU2003242159A1; CN1278517C

Abstract

The invention relates to a completely distribution management method for realizing signaling interworking in width and narrow band network, which proceed to completely distribution management for multi-M3UA link resource managed by multi-block operational control broad, and guarantee consistency of M3UA route and link status in different operational control broad. 'Include setting board number for each operational control broad, and setting two nimiber for each M3UA link managed by operational control broad: M3UA physical link number and M3UA logic link number; in accordance with operational control broad number, received signaling service data information is distributed and which is processed by operational control broad corresponding board number, or retransmitting to processed by operational control broad with other board number; to received M3UA logic link status management information and M3UA route status management information, which is transmitted and processed in accordance with operational control broad number, and when status management infori-riation on the operational control broad is changed, which is broadcasted to other operational control broad, operational control broad received the information updates status and transmit broadcast response information to backboard bus.

Description

Fully distributed management method for realizing interworking of wide and narrow band signaling networks

Technical field

The present invention relates to network communication technology, and more specifically, to a method for fully distributed management of the M3UA protocol (layer 3 message transfer part user adaptation protocol), and a method for fully distributed management of broadband and narrowband signaling network interworking . Background of the invention

In order to meet the requirements for large-capacity, high-performance processing, and high-reliability transmission of signaling services in the IP bearer network, M3UA is generally distributed on different service processing boards, and M3UA on different service processing boards adopts a fully distributed management method Realize global resource sharing and consistency of state maintenance and management (The M3UA protocol is mainly used to implement N0.7 signaling, IP network interworking, and user signaling carrying narrowband MTP3 on IP networks. M3UA has two basic typical networking methods: SGP-ASP mode and IPSP-IPSP mode).

The M3UA fully distributed management architecture shown in Figure 1 has n business processing boards, business processing board 1, business processing board 2, business processing board n, and each business processing board runs the same

In the M3UA protocol, the M3UA module on each service processing board independently manages its own board resources. The M3UA modules on different service processing boards communicate with each other through the backplane bus (shown as thick solid lines in the figure) (shown as thin solid lines in the figure), so as to achieve consistency of resource sharing and status management.

In the prior art, the M3UA protocol module generally runs on the same service processing board, and there is no complete M3UA fully distributed management solution.

In addition, in order to avoid single points of failure and ensure reliable transmission, the existing technology is generally implemented by setting up redundant SG (Signaling Gateway) or SCTP connections, and does not form a complete M3UA fully distributed state maintenance and resource. Global share implementation.

In summary, in order to meet the requirements for large-capacity, high-performance processing, and high-reliability transmission of signaling services in the IP bearer network, M3UA needs to adopt a fully distributed management method, that is, M3UA distributed on different service processing boards Unified management of resources to ensure M3UA on different business processing boards Complete consistency of routing status and M3UA link status. Summary of the Invention

In view of the above, the object of the present invention is to design a fully distributed management method for interworking between wide and narrow band signaling networks. It is an implementation scheme of M3UA fully distributed state management and global resource sharing, thereby achieving large capacity and high performance. The purpose of processing and easy expansion, avoiding a single point of failure, and ultimately achieve reliable transmission of signaling services.

The technical solution to achieve the purpose of the present invention is as follows: A fully distributed management method for implementing interworking between wide and narrow band signaling networks, and fully distributed management of more than one M3UA link resource managed by more than one service processing board More than one business processing board is connected through the backplane bus and is characterized by:

A. Set a board number for each service processing board; set two numbers for each M3UA link managed by each service processing board, including M3UA physical link number and M3UA logical link number; each M3UA logical link The number uniquely corresponds to a service processing board board number and an M3UA physical link number on the board processing board

B. The received signaling service data message is distributed according to the board number of the service processing board, and is processed by the service processing board of the corresponding board number, or forwarded to the service processing board of another board number for processing;

C. The M3UA logical link state management message and M3UA routing state management message received from the backplane bus are distributed according to the board number of the service processing board, processed by the service processing board of the corresponding board number, and the status of the service processing board When the management message changes, the changed status management message is broadcast to other service processing boards through the backplane bus. The service processing board that receives the status change broadcast message updates the status and sends a broadcast response message to the backplane bus.

The invention further divides the M3UA link into M3UA physical link and M3UA logical link, and proposes a perfect M3UA fully distributed management implementation scheme based on this.

In the present invention, a reliable communication mechanism between different service processing boards and an implementation process thereof are provided. This communication mechanism can ensure the consistency of M3UA logical link states and M3UA routing states of different service processing boards. When a certain service processing board fails, the entire M3UA communication part is affected. The impact is minimal.

In the present invention, a service transfer method between different service processing boards is provided, which realizes the forwarding of service data between different service processing boards.

In the technical solution of the present invention, each service processing board may include M3UA physical links managed by other service processing boards into the jurisdiction of the service processing board, that is, it is regarded as one M3UA logical link on the service processing board. Therefore, when the signaling service data message is distributed, an available M3UA logical link can be selected according to the current M3UA logical link status maintained on the service processing board, and the data is then further processed according to the service processing board number corresponding to the logical link. The message is forwarded to the corresponding service processing board for processing, so as to achieve the purpose of managing the global sharing of resources. Brief description of the drawings

Figure 1 is a schematic diagram of the M3UA fully distributed management architecture;

Figure 2 is a schematic diagram of the relationship between M3UA physical links and M3UA logical links;

Figure 3 is a block diagram of the M3UA fully distributed management processing process;

Figure 4 is a schematic diagram of the process of calculating the M3UA logical link according to the SLS and the M3UA link selection mask set by the user. Mode of Carrying Out the Invention

To facilitate maintenance and management, we have introduced some basic concepts based on the M3UA protocol, including: M3UA link, M3UA link set, M3UA entity, and M3UA route. The relationship established between SGP-ASP (Signaling Gateway Process-Application Server Process) and IPSP-IPSP (IP Signaling Point) through SCTP (Stream Control Transmission Protocol) connection is called M3UA link; SG (Signaling Gateways) and MGCs (Media Gateway Controllers), or between MGCs and MGCs (end-to-end), all links that serve the same application server (AS) are called M3UA link sets; logic that will perform specific functions The unit is called an M3UA entity. For example, a logical unit that processes specific services-an application server AS, and a logical unit that completes a specific message forwarding function-a signaling gateway SG, can be called an M3UA entity. Logic unit-local entity, and logic that performs specific functions by the destination Unit-destination entity; The path taken from the source M3UA entity to the destination M3UA entity is called an M3UA route.

In the present invention, we further divide the M3UA link into M3UA physical link and M3UA logical link, and based on this, we propose a perfect M3UA fully distributed management implementation scheme.

The description of the M3UA fully distributed management implementation solution of the present invention is based on the definition of the basic concepts of M3UA links, M3UA link sets, M3UA routes, and M3UA entities.

Referring to FIG. 2, in order to implement distributed state management of M3UA and global resource sharing, the resources managed by each M3UA service processing board, that is, M3UA links are further divided into M3UA physical links and M3UA logical links. The M3UA physical link numbers of service processing board 1, service processing board 2, and service processing board 3 in FIG. 2 are (0, 1, 2) (0, 1, 2) (0, 1, 2, 3); service The M3UA logical link numbers of processing board 1, service processing board 2, and service processing board 3 are (0, 1, 2) (3, 4, 5) and (6, 7, 8, 9).

The M3UA physical link number is an M3UA physical link number formed by uniformly numbering the M3UA links managed by each service processing board, that is, the link number in the service processing board. The user can set each service processing board The maximum number of M3UA physical links that can be managed.

The M3UA logical link number is based on the service processing board, and the M3UA links distributed on different service processing boards are globally uniformly numbered to form the M3UA logical link number.

Therefore, each M3UA link has two numbers: the M3UA physical link number is the intra-board link number and the M3UA logical link number is the inter-board link number. Figure 2 shows the specific correspondence between M3UA physical links and M3UA logical links: One M3UA physical link corresponds to only one M3UA logical link: An M3UA logical link number is composed of the service processing board number and the M3UA physical link. The link number is determined jointly by the link number in the service processing board. The M3UA logical links are globally uniformly numbered among different service processing boards, and the external status is unified. Therefore, the M3UA logical link states of different service processing boards must be consistent. At the same time, each business processing board can include M3UA physical links managed by other business processing boards into the jurisdiction of this business processing board, that is, it is regarded as this business office. An M3UA logical link on the management board. Therefore, when the signaling service data message is distributed, an available M3UA logical link can be selected according to the current M3UA logical link status maintained on the service processing board, and the data is then further processed according to the service processing board number corresponding to the logical link. The message is forwarded to the corresponding service processing board for processing, so as to achieve the purpose of managing the global sharing of resources.

Referring to FIG. 3, a specific process of M3UA fully distributed management is shown.

In steps 301 to 306, the data message received from the backplane bus is processed normally if it belongs to the local board, otherwise, it is transferred to other related boards through the backplane bus for processing. The process includes: selecting the M3UA logical link according to the M3UA link priority, the M3UA link selection mask (SLS) in the received signaling message and the M3UA link selection mask selected by the user (step 302); The M3UA logical link obtains the board number of the service processing board (step 303); determines whether the board number of the service processing board is used for processing based on the obtained board number of the service processing board (step 304); and the data message belonging to the service processing board is processed, then Processed by this business processing board (step 306); data messages not processed by this business processing board are transferred to other related business processing boards for processing through the backplane bus (step 305).

In steps 311 to 314, the status management message received from the backplane bus is processed normally on this board; if the status changes, the changed status is immediately broadcast to other relevant boards through the backplane bus. The process includes: normal processing of the status management messages (steps 311 and 312); judging whether the status of the M3UA logical link and the M3UA route has changed (step 313); Then, a status change message is broadcast to other related single boards through the backplane bus (step 314).

Steps 321 and 322, when a data message forwarded by another board is received from the backplane bus, normal processing is performed;

Steps 331, 322, and 323. When receiving status change broadcast messages of other boards from the backplane bus (step 331), perform normal status update processing (step 322), and send a broadcast response message through the backplane bus ( Step 323).

In the above step 302, the user first selects a route according to the priority selected by the user, and selects the logical link with the highest priority; among a set of logical links with the same priority, according to the SLS and the M3UA chain selected by the user The path selection mask calculation selects a specific logical link. The calculation steps include:

Perform a logical AND operation on the link selection mask (SLS) in the received No. 7 signaling message and the M3UA link selection mask set by the user, thereby skipping the "0" bit in the two masks;

Move the "1" in the result of "AND" logic operation to the low order and fill the high order with zeros, and write it as a hexadecimal number;

The above hexadecimal number performs a margin (%) operation on the number of links available in the M3UA link, and uses the result of the margin operation as the M3UA logical link.

It is assumed that the M3UA link selection mask (SLS) given in the signaling message is 1101, and the M3UA link selection mask set by the user is 0101. See FIG. 4, and the calculation process is: aligning 1101 and 0101. "Logical operation, that is, all zeros in the mask are skipped; take the" 1 "in the first bit on the right as the lowest bit, and take the" Γ "in the second bit on the right as the second-lowest bit to get" 11 "; After zero, it is 0011 and written as hexadecimal 0 x 3; the above hexadecimal number O x 3 performs a margin (%) operation on the number of available links in the M3UA link set 4 to obtain 0 x 3 Therefore, the third M3UA link is selected as the M3UA logical link (if the calculated hexadecimal number is 0 x 6, the result of performing a margin operation on 4 is 2, then the second M3UA logical link is selected ).

Take Figure 2 as an example. Assume that three M3UA physical links on service processing board 2 fail and cannot be used to transmit services, that is, M3UA logical links 3, 4, and 5 are unavailable. Service processing board 2 will change the status after M3UA logical link status (logical links 3, 4, 5) maintained by this board broadcasts logical link status to service processing board 1 and service processing board 3, preventing other signaling messages from passing through the M3UA physical chain on this board Way to send. At the same time, for the No. 7 signaling message from the upper layer, the service processing board 2 will select other available M3UA logical links it maintains to send, such as M3UA logical link 6, 7, or 8, and the service processing board 2 will The number of the business processing board corresponding to the logical link (the number of the business processing board corresponding to the logical link 6, 7, or 8 is 3), and the number seven signaling message from the upper layer is forwarded to the corresponding business processing board (business processing board 3). For processing.

In order to ensure the complete consistency of the M3UA logical link status and the M3UA routing status between boards, in addition to using the immediate status broadcast message, the system also adopts the following methods: 1. System regular broadcast: Regardless of whether the M3UA link status of the service processing board changes, the system periodically sends M3UA logical link status broadcast messages to other service processing boards. In this way, links caused by unknown factors can be prevented The states are inconsistent, and the timing broadcast does not require the other party to respond.

2. Status error correction: When the M3UA link status of a service processing board is abnormal, but it receives data messages forwarded by other service processing boards, it immediately broadcasts the current link status to other relevant service processing boards through the backplane bus. . If the M3UA link that a service processing board is responsible for is faulty but receives data messages forwarded by other service processing boards that need to pass through the faulty link, the faulty link status is broadcast immediately.

3. Each business processing board needs to periodically check the current board status of other business processing boards. When the status of other boards changes, it is necessary to immediately report the changed board status to this board. M3UA

4. When a service processing board receives a routing message, it broadcasts the routing message to all other service processing boards. The routing messages include: TFP, TFA, TFC, and so on. When routing messages such as TFP, TFA, and TFC need to be sent to other offices, these messages are sent by the service board with the lowest available service board number currently available.

The present invention implements a fully distributed management method for interworking of broadband and narrowband signaling networks. For M3UA distributed on different service processing boards, unified management of M3UA resources is achieved, and the M3UA routing status and M3UA chain on different service processing boards are ensured. Complete consistency of road status. Can be applied to broadband telecommunication network products.

The technical solution of the present invention realizes large-capacity and high-performance processing, is easy to expand, avoids a single point of failure, and realizes reliable transmission of signaling services.

In the present invention, a very complete M3UA fully distributed management implementation scheme is provided, which effectively solves the problem of global sharing of resources and consistency of state maintenance on different business processing boards.

In the present invention, a communication mechanism between different service processing boards is provided. This communication mechanism can ensure that when a certain service processing board fails, the entire M3UA communication part is least affected.

Claims

Claim

1. A fully distributed management method for implementing broadband and narrowband signaling network interworking. Fully distributed management of more than one M3UA link resource managed by more than one service processing board is characterized by:

2. A fully distributed management method for implementing broadband and narrowband signaling network interworking according to claim 1, further comprising: periodically transmitting status broadcast messages of each M3UA logical link on the backplane bus, The service processing boards that received the broadcast message do not need to respond to it.

3. The fully-distributed management method for realizing interworking of wide and narrow band signaling networks according to claim 1, further comprising: periodically checking, by each service processing board, a current single board of another service processing board Status; when the current board status of a service processing board changes, report its changed status to other service processing boards via the backplane bus; and the service processing board that receives the status change message to the M3UA Adjust the link status and M3UA routing status accordingly.

4. The fully distributed management method for realizing interworking between wide and narrow band signaling networks according to claim 1, further comprising: when a service processing board receives a routing message, it sends the information to all other service processing boards. The routing messages are broadcast, and these routing messages are sent by the service processing board of the smallest board number currently available to other offices when needed.

5. A fully distributed management method for realizing interworking of broadband and narrowband signaling networks according to claim 1, characterized in that: the M3UA physical link number in step A is allocated to each of the service processing boards. The managed M3UA links are formed by a unified number sequence; the M3UA logical link numbers are formed by globally unified numbering according to the M3UA links of all service processing boards.

6. A fully distributed management method for realizing interworking of broadband and narrowband signaling networks according to claim 1, characterized in that said step B further comprises:

B1. According to the M3UA link selection mask (SLS) in the received signaling message, the M3UA link selection mask and priority set by the user, select the M3UA logical link to obtain the board number of the service processing board; B2. According to The selected business processing board board number forwards the data message to the business processing board corresponding to the board number;

B3. The data processing is processed by the service processing board of the other board number that received the forwarded message.

7. A fully distributed management method for implementing interworking between wide and narrow band signaling networks according to claim 6, characterized in that said step B1 further comprises:

B11. Select a M3UA logical link with a higher priority from the M3UA logical links;

B12. In a group of M3UA logical links of the same priority, logically "AND" the link selection mask (SLS) in the received signaling message No. 7 with the M3UA link selection mask set by the user. Operation, skip the "0" bit in the two masks;

B13. Move the "1" in the result of "AND" logic operation to the low order and fill the high order with zeros, and write it as a hexadecimal number;

B14. The above hexadecimal number performs a margin (%) operation on the number of logical links available in the M3UA link. The result of the margin operation is selected as the M3UA logical link.

8. A fully distributed management method for implementing interworking between broadband and narrowband signaling networks according to claim 6, wherein said step B2 further comprises:

B21. When the M3UA logical link status on the service processing board becomes unavailable, it is maintained by this board and broadcast to other service processing boards to disconnect the physical link on this service processing board;

B22. Select other available M3UA logical links that can be maintained by this board; B23. According to the selected M3UA logical link, the service processing board corresponding to the board number is found, and the data message is forwarded to the service processing board with the board number.

9. A fully distributed management method for implementing broadband and narrowband signaling network interworking according to claim 6, characterized in that: in said step B3, the M3UA link of the service processing board receiving the data forwarding message When the status is abnormal, the VI3UA link status is broadcast to other related service processing boards through the backplane bus.

10. A fully distributed management method for implementing broadband and narrowband signaling network interworking according to claim 1, characterized in that: said M3UA link is a signaling gateway process (SGP) to an application server process (ASP) The connection relationship established between the IP Signaling Point (IPSP) and the IP Signaling Point (IPSP) through the Flow Control Transmission Protocol (SCTP); the M3UA route is the path that the source M3UA entity passes to the destination M3UA entity; The M3UA entity described is a logical unit that performs a specific logical function.