CN115460039B

CN115460039B - High-capacity TDM switching system and method based on logic network and storage medium

Info

Publication number: CN115460039B
Application number: CN202210988322.6A
Authority: CN
Inventors: 张建军; 杨少波; 张醒
Original assignee: Zhuhai Comleader Information Technology Co Ltd
Current assignee: Zhuhai Comleader Information Technology Co Ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2023-07-11
Anticipated expiration: 2042-08-17
Also published as: CN115460039A

Abstract

The system separates data calculation and data communication tasks from a system level through model abstraction of a logic function subnet and a physical bearing subnet. Because of decoupling of the system level, the functional software running on the logic functional node can concentrate on the function itself, the corresponding functional software can be designed into an entity with good portability, the engineering realization difficulty of the threshold and the TDM switching system for developing the functional software can be reduced, and the design cost, the production cost, the erection cost and the maintenance cost are reduced.

Description

High-capacity TDM switching system and method based on logic network and storage medium

Technical Field

The present application relates to the field of communication systems, and in particular, to a high-capacity TDM switching system and method based on a logical network, and a storage medium.

Background

TDM (time division multiplexing) technology is one of core technologies constituting a telecommunication network, and is mature and stable, and has excellent service quality, and has been one of main technologies of telecommunication telephone networks. Although TDM technology has exited the core network due to the development of communication technology, TDM technology still plays a great role in the context of edge access networks and certain industry-specific private networks.

TDM switches occupy a central position in TDM communication networks. In the current design and manufacture of TDM switches, the design is mainly based on the circuit switching principle. The TDM switch is generally formed by a structure such as a time division switching unit, a space division switching unit, or a time division space division hybrid switching. The time-division switching unit is characterized in that all input and output ports share a single communication path in a time-sharing way, and has a time slot switching function; the basic feature of the space division switching unit is that it can simultaneously and parallelly transmit information between multiple pairs of input ports and output ports, and has the function of space switching. In the design of large-capacity TDM switches, the sub-switching network is generally constructed by multistage interconnection, such as a commonly used TST three-stage switching network structure.

TDM switch design technology is mature, but from an engineering implementation perspective, the following problems exist:

(1) The switching structure has complex connection topology and high cost

(2) The whole system needs to be ensured to be completely synchronous, and the cost of a clock and a synchronous scheme is huge

(3) Tightly coupled software and hardware structure and poor expandability

The defects bring about complex design, high cost, difficult system iteration upgrade and huge later maintenance cost in the realization of TDM switch engineering.

Accordingly, the above-mentioned technical problems of the related art are to be solved.

Disclosure of Invention

The present application aims to solve one of the technical problems in the related art. Therefore, the embodiment of the application provides a high-capacity TDM switching system and method based on a logic network and a storage medium, so that the engineering implementation difficulty of the TDM switching system can be reduced, and the design cost, the production cost, the erection cost and the maintenance cost are reduced.

According to an aspect of the embodiment of the application, a high-capacity TDM switching system based on a logic network is provided, wherein the system comprises a logic function subnet, a physical bearing subnet and a global resource configuration module;

the logic function sub-network comprises a plurality of logic function nodes, and virtual connection exists among different logic function nodes;

the physical bearer sub-network comprises a physical mapping node, an Ethernet switching node and a physical mapping node, and is used for data physical communication and bearer;

the physical mapping node receives data from an external TDM network and converts the data into Ethernet domain packetized data, and the Ethernet domain packetized data is sent to an Ethernet switching node for switching;

the Ethernet switching node is used for Ethernet domain packetized data switching;

the global resource allocation module is used for allocating global Mac resources and providing routing forwarding information for the system;

the physical mapping node receives data from the Ethernet exchange, completes the conversion from Ethernet domain packaged data to TDM domain streaming data, and then sends the TDM domain streaming data to the TDM network outside the system.

In one embodiment, the logical function node includes a CPU and function software that determines the function of the logical function node.

In one embodiment, the functions of the logical function node at least include: a signaling protocol stack number seven, signaling register number one processing, network management agent, CDR generation.

In one embodiment, the virtual connections between different logical function nodes are carried by physical links.

In one embodiment, the physical mapping node receives data from an external TDM network and converts the data into ethernet domain packetized data, including:

the physical mapping node converts the TDM domain streaming data into Ethernet domain packetized data containing Mac with specific purposes according to the configuration of the global resource configuration module.

In one embodiment, the logical functional subnetwork maps the data to the physical bearer subnetwork through the virtual connection after completing the corresponding function, and the physical bearer subnetwork performs data communication and transmission after receiving the data.

According to an aspect of the embodiments of the present application, there is provided a high-capacity TDM switching method based on a logical network, which is applied to the high-capacity TDM switching system based on a logical network described in the foregoing embodiments, and the method includes:

receiving data from an external TDM network, converting the data into Ethernet domain packetized data, and transmitting the Ethernet domain packetized data to an Ethernet switching node for switching;

and receiving data from the Ethernet exchange, completing the conversion from Ethernet domain packetized data to TDM domain streaming data, and then transmitting the TDM domain streaming data to a TDM network outside the system.

In one embodiment, the receiving data from an external TDM network and converting the data into ethernet domain packetized data includes:

the TDM domain streaming data is converted into ethernet domain packetized data containing a specific purpose Mac according to the configuration of the global resource allocation module.

In one embodiment, the method further comprises:

and separating data communication and data calculation, and mapping and transmitting the data through virtual connection after the data calculation is completed.

According to an aspect of the embodiments of the present application, there is provided a storage medium storing a processor-executable program that when executed by a processor implements the high-capacity TDM switching method based on a logical network as described in the previous embodiments.

The high-capacity TDM switching system and method based on the logic network and the storage medium provided by the embodiment of the application have the beneficial effects that: the system comprises a logic function subnet, a physical bearing subnet and a global resource configuration module; the logic function sub-network comprises a plurality of logic function nodes, and virtual connection exists among different logic function nodes; the physical bearer sub-network comprises a physical mapping node, an Ethernet switching node and a physical mapping node, and is used for data physical communication and bearer; the physical mapping node receives data from an external TDM network and converts the data into Ethernet domain packetized data, and the Ethernet domain packetized data is sent to an Ethernet switching node for switching; the Ethernet switching node is used for Ethernet domain packetized data switching; the physical mapping node receives data from the Ethernet exchange, completes the conversion from Ethernet domain packaged data to TDM domain streaming data, and then sends the TDM domain streaming data to the TDM network outside the system. Through the system of the application, the engineering realization difficulty of the TDM switching system can be reduced, and the design cost, the production cost, the erection cost and the maintenance cost are reduced.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a high-capacity TDM switching system based on a logic network according to an embodiment of the present application;

fig. 2 is a flowchart of a high-capacity TDM switching method based on a logical network according to an embodiment of the present application.

Detailed Description

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

The terms "first," "second," "third," and "fourth" and the like in the description and in the claims and drawings are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

TDM (time division multiplexing) technology is a core technology constituting a telecommunication network, and is mature and stable, and has excellent service quality, and has been a mainstream technology of a telecommunication telephone network. Although TDM technology has exited the core network due to the development of communication technology, TDM technology still plays a great role in the context of edge access networks and certain industry-specific private networks.

(1) The switching structure has complex connection topology and high cost

(3) Tightly coupled software and hardware structure and poor expandability

Based on the above, the application provides a high-capacity TDM switching system and method based on a logic network and a storage medium. The design thought of this application is: by means of the network virtualization idea, the internal communication of the TDM switch is abstracted into two internal subnets: logical functional subnetworks and physical bearer subnetworks. Among other things, the features of the present application include: the physical bearing sub-network is composed of physical data bearing nodes and physical switching nodes, and is used for finishing the physical network functions of bearing, switching and the like of internal data communication; the logical function subnetwork is constructed over the physical bearer subnetwork, and is comprised of logical function nodes and virtual connections between them. The logic function node provides an application-oriented function, the virtual connection can be flexibly constructed according to the application characteristics, end-to-end data transmission is provided for the logic function node, and physical data communication and transmission are carried out by mapping the virtual connection to a physical bearing sub-network and depending on the physical bearing sub-network in actual transmission.

The high-capacity TDM switching system based on the logic network is essentially the idea of separating data bearing (or data communication) from data calculation, wherein the data calculation is constructed by logic function nodes according to application; the data communication is implemented by a mapping of virtual connections to physical bearer sub-networks.

Specifically, as shown in fig. 1, the high-capacity TDM switching system based on the logic network provided by the present application includes: logic function subnetwork, physical bearing subnetwork and global resource allocation module; the logic function sub-network comprises a plurality of logic function nodes, and virtual connection exists among different logic function nodes; the physical bearer sub-network comprises a physical mapping node, an Ethernet switching node and a physical mapping node, and is used for data physical communication and bearer; the physical mapping node receives data from an external TDM network and converts the data into Ethernet domain packetized data, and the Ethernet domain packetized data is sent to an Ethernet switching node for switching; the Ethernet switching node is used for Ethernet domain packetized data switching; the global resource allocation module is used for allocating global Mac resources and providing routing forwarding information for the system; the physical mapping node receives data from the Ethernet exchange, completes the conversion from Ethernet domain packaged data to TDM domain streaming data, and then sends the TDM domain streaming data to the TDM network outside the system.

In this embodiment, the logical function node includes a CPU and function software that determines the function of the logical function node. In a specific engineering implementation, the logic function node is composed of a CPU and functional software running on the CPU, where the function of the functional software determines a specific function of a specific logic function, such as a signaling protocol stack No. seven, signaling register processing No. one, network management agent, CDR generation, and other functions.

Virtual connections between logical function nodes are only logically abstract, with no concrete corresponding entities. In engineering, virtual connection between different logic function nodes takes physical links as carriers.

In this embodiment, the physical mapping node receives data from an external TDM network and converts the data into ethernet domain packetized data, including: the physical mapping node converts the TDM domain streaming data into Ethernet domain packetized data containing Mac with specific purposes according to the configuration of the global resource configuration module. Specifically, the physical mapping node receives data from an external TDM network, and converts TDM domain streaming data into ethernet domain packetized data containing a Mac of a specific purpose in units of time slots according to the configuration of the global resource configuration module. And sending the converted Ethernet packet to an Ethernet switching node for switching.

After the logic function sub-network completes the corresponding function, the data is mapped to the physical bearing sub-network through virtual connection, and the physical bearing sub-network performs data communication and transmission after receiving the data.

The ethernet switching node in this embodiment implements a high-performance ethernet packet switching function, logically implements a time slot switching function of TDM domain data, and engineering uses a commercially-available ethernet switching chip. The physical inverse mapping node receives data from the Ethernet exchange, completes conversion from Ethernet domain packaged data to TDM domain streaming data, and then sends the data to the TDM network outside the system.

The method separates data calculation and data communication tasks from a system level through model abstraction of a logic function subnet and a physical bearing subnet. The application has the following advantages:

(1) The mature high-cost-performance Ethernet switching function is used for completing the time slot switching function of the TDM domain;

(2) The system has linear expandability thanks to the good expandability of the Ethernet technology, and expands and enriches the use scene of the system;

(3) The system adopts a single-stage star topology (or a single-stage double-star topology), has a simple structure and is convenient for subsequent deployment and maintenance;

(4) The mapping and inverse mapping nodes are important nodes of the system. Because of decoupling at the system level, the node has a single function, reduces the design difficulty, is suitable for being realized by adopting a plurality of realization means such as FPGA, DSP or CPU, and is convenient to design into a reusability module;

(5) Because of decoupling of the system level, the functional software running on the logical functional node can concentrate on the function itself, and the corresponding functional software can be designed into an entity with good portability, so that the development and realization threshold of the functional software is reduced.

In a word, through the design of this application, the engineering realization degree of difficulty that can very big reduction TDM switching system, very big reduction its design cost, manufacturing cost, erects cost and maintenance cost.

In addition, as shown in fig. 2, the present application further provides a high-capacity TDM switching method based on a logic network, which is applied to the high-capacity TDM switching system based on a logic network described in the foregoing embodiment, and the method includes:

s201, receiving data from an external TDM network, converting the data into Ethernet domain packetized data, and transmitting the Ethernet domain packetized data to an Ethernet switching node for switching.

S202, receiving data from the Ethernet exchange, completing conversion from Ethernet domain packaged data to TDM domain streaming data, and then sending the TDM domain streaming data to a TDM network outside the system.

Wherein the receiving data from the external TDM network and converting the data into ethernet domain packetized data includes: the TDM domain streaming data is converted into ethernet domain packetized data containing a specific purpose Mac according to the configuration of the global resource allocation module.

Wherein the method further comprises: and separating data communication and data calculation, and mapping and transmitting the data through virtual connection after the data calculation is completed.

Further, the present application also provides a storage medium storing a processor-executable program that when executed by a processor implements the high-capacity TDM switching method based on a logical network as described in the foregoing embodiments.

The content in the method embodiment is applicable to the storage medium embodiment, and functions specifically implemented by the storage medium embodiment are the same as those of the method embodiment, and the achieved beneficial effects are the same as those of the method embodiment.

In some alternative embodiments, the functions/acts noted in the block diagrams may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may in fact be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Furthermore, the embodiments presented and described in the flowcharts of this application are provided by way of example in order to provide a more thorough understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed, and in which sub-operations described as part of a larger operation are performed independently.

Furthermore, while the present application is described in the context of functional modules, it should be appreciated that, unless otherwise indicated, one or more of the functions and/or features may be integrated in a single physical device and/or software module or one or more of the functions and/or features may be implemented in separate physical devices or software modules. It will also be appreciated that a detailed discussion of the actual implementation of each module is not necessary to an understanding of the present application. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be apparent to those skilled in the art from consideration of their attributes, functions and internal relationships. Thus, those of ordinary skill in the art will be able to implement the present application as set forth in the claims without undue experimentation. It is also to be understood that the specific concepts disclosed are merely illustrative and are not intended to be limiting upon the scope of the application, which is to be defined by the appended claims and their full scope of equivalents.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium may even be paper or other suitable medium upon which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.

It is to be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.

In the foregoing description of the present specification, descriptions of the terms "one embodiment/example", "another embodiment/example", "certain embodiments/examples", and the like, are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. The high-capacity TDM switching system based on the logic network is characterized by comprising a logic function subnet, a physical bearing subnet and a global resource configuration module;

the physical bearing sub-network is used for data physical communication and bearing, and comprises a physical mapping node, an Ethernet switching node and a physical mapping node;

2. The high-capacity TDM switching system based on the logical network according to claim 1, wherein the logical function node includes a CPU and a function software, and the function software determines a function of the logical function node.

3. The high-capacity TDM switching system based on a logical network according to claim 2, wherein the functions of said logical functional nodes include at least: a signaling protocol stack number seven, signaling register number one processing, network management agent, CDR generation.

4. The high-capacity TDM switching system based on logical networks according to claim 1, wherein the virtual connections between the different logical functional nodes are carried by physical links.

5. The logical network-based high-capacity TDM switching system according to claim 1, wherein the physical mapping node receives data from an external TDM network and converts the data into ethernet-domain packetized data, comprising:

6. The high-capacity TDM switching system based on the logical network according to claim 1, wherein the logical functional subnetwork maps data to the physical bearer subnetwork through the virtual connection after completing the corresponding function, and the physical bearer subnetwork performs data communication and transmission after receiving the data.

7. A high-capacity TDM switching method based on a logic network, which is applied to the high-capacity TDM switching system based on a logic network according to claim 1, the method comprising:

8. The high-capacity TDM switching method based on the logical network according to claim 7, wherein said receiving data from the external TDM network and converting the data into ethernet-domain packetized data includes:

9. The logical network-based high-capacity TDM switching method according to claim 7, further comprising:

10. A storage medium storing a processor-executable program which when executed by a processor implements the logical network-based high-capacity TDM switching method according to any of claims 7-9.