KR100724854B1 - Communication method and apparatus between host system subscriber and remote system subscriber - Google Patents

Abstract

The present invention provides a method for communicating between a mother station subscriber and a subscriber station through a synchronous digital relay network, formatting the data of the mother terminal subscriber according to the STM-1 standard format, and connecting the subscriber station to the synchronous digital relay network. And formatting the subscriber station's data in accordance with the STM-1 standard format and connecting it to the synchronous digital hierarchy transmission network.

SDH transmission network, mother station device, local station device, subscriber communication

Description

Communication method and device between mother station subscriber and subscriber of local station {COMMUNICATION METHOD AND APPARATUS BETWEEN HOST SYSTEM SUBSCRIBER AND REMOTE SYSTEM SUBSCRIBER}             

1 is a diagram for explaining subscriber connection using STM-1 link (single mode);

2 is a block diagram of an existing STM-1 format;

3 is a network diagram according to an embodiment of the present invention;

FIG. 4 is an exemplary block diagram for connecting between the subscriber 30 and the remote subscriber 38 of FIG.

5 is a block diagram of each of the link cards 50, 52, 54, and 56 of FIG. 4 for converting to STM-1 standard shapes according to an embodiment of the present invention;

6 is a data format diagram of 155.52 Mbps conforming to the STM-1 standard shape processed by link cards 50, 52, 54, 56 in accordance with an embodiment of the present invention.

The present invention relates to a transmission network, and more particularly, to a communication method between a home station subscriber and a home station subscriber in an electronic switching system.

Existing electronic switch system uses single mode optical transmission module in STM-1 (non-standard) format between remote system and host system for communication with remote subscribers. Consists of.

1 is a view for explaining the connection between subscribers using the STM-1 link (single mode). Referring to FIG. 1, for communication between the general subscriber 2 and the remote subscriber 4, the general subscriber data is stored in the ASS (Access Subscriber Sub-System) in the mother station device 6 to which the general subscriber 2 is connected. Switched at time switch 8, STM-1 (non-standard) optical transmission via link card, switched at space split switch 10 of SSL (Space Switch & Link) block of INS (Inter Network System), STM via link card -1 (non-standard) light transmission is applied to the own station apparatus 12, and then transmitted to the remote subscriber 4 via the time switch 14 of the ASS block of the own station apparatus 12. Accordingly, communication between the general subscriber 2 and the remote subscriber 4 is possible.

Figure 2 shows the STM-1 format of STM-1 (non-standard) optical transmission in FIG. Referring to FIG. 2, six channels of a frame alignment word (FAW) are placed in the head, and the remaining space can be arbitrarily used by the user as a payload section. Referring to an example of a payload section using channel in FIG. 2, a 2048 channel of PCM data (voice and data signals), 64 channels of IPC (Inter Processor Communication) data, and a disconnection call indicating whether a call is disconnected ( cutoff call (hereinafter referred to as "COC") includes 128 channels of data and two other channels for maintenance.

However, as shown in FIG. 2, the STM-1 format does not meet the SDH standard and thus does not use a backbone transmission network (SDH transmission network). In the end, the fiber optic cable must be installed separately in order to connect to the local station, which is inferior in cost and efficiency. Therefore, it is desirable to configure an STM-1 link format that conforms to a standard that can use a backbone transmission network.

Accordingly, an object of the present invention is to provide an apparatus and method for configuring an STM-1 link format conforming to a standard capable of using a backbone transmission network.

In accordance with the above object, the present invention provides a method for communicating between a mother station subscriber and a local station subscriber through a synchronous digital hierarchy transmission network, by formatting data of the mother station subscriber according to the STM-1 standard format. And formatting the subscriber station's subscriber data according to the STM-1 standard format and connecting the subscriber station to the synchronous digital hierarchy transmission network.

The present invention also provides a payload section in which the STM-1 standard format information includes section overhead and path overhead sections, user data, interprocessor communication data, disconnection call data, maintenance data, and photoelectric conversion data. Characterized in that made.

The present invention also provides a communication device between a mother station apparatus subscriber and a local station subscriber through a synchronous digital hierarchy transmission network: between the mother station apparatus and the synchronous digital hierarchy transmission network, and between the local station and the synchronous digital hierarchy transmission network, An STM that formats the data of the home station subscriber in accordance with the STM-1 standard format and connects it to the synchronous digital hierarchy network, and formats the data of the local station subscriber in the STM-1 standard format and connects it to the synchronous digital hierarchy network. -1 standard format device; The STM-1 standard format device; A first processor for processing the section overhead and path overhead section information in the information of the STM-1 standard format, the user data in the information of the STM-1 standard format, inter-processor communication data, disconnection call data, And a second processor configured to process payload section information including maintenance data and photoelectric conversion data.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the same elements in the figures are represented by the same numerals wherever possible. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

In order to communicate between the subscriber of the mother station device and the subscriber of the local device in the conventional electronic switch, it was possible to communicate by directly connecting the optical cable. However, the optical data type did not meet the STM-1 standard, and thus, the optical data type could not be connected to the SDH (Synchronous Digital Hierarchy) transmission network. Therefore, in the embodiment of the present invention, the optical data type is configured in accordance with the STM-1 standard and connected to an existing existing transmission network (SDH transmission network) to enable communication between subscribers of the mother station apparatus and subscribers of the own station apparatus.

3 is a diagram illustrating a network configuration according to an embodiment of the present invention. Referring to FIG. 3, the SDH transmission network 20 includes STM-1 optical transmission devices 22, 24, and 26. The STM-1 optical transmission device 22 of the STM-1 optical transmission devices 22, 24, and 26 is connected to the local device 36 through a link conforming to the STM-1 standard. The subscriber 36 is connected to the local subscriber 38. Of the STM-1 optical transmitters 22, 24, and 26, the STM-1 optical transmitter 24 is connected to a mother station apparatus 28 through a link conforming to the STM-1 standard. 28, the home subscriber 30 is connected. Of the STM-1 optical transmitters 22, 24, and 26, the STM-1 optical transmitter 26 includes a fiber loop carrier (FLC) 32 through a link conforming to the STM-1 standard. Is connected, and the optical subscriber transmission device 32 is connected to the mother station device 34 through lines such as DS3 class and DS1 class.

In the embodiment of the present invention, since the link structure is connected to the existing SDH transmission network 20 according to the STM-1 standard as shown in FIG. 3, for example, 622Mbps / 2.5Gpbs optical transmission is performed directly in the INS block of the mother station 28. Since it can be connected directly to the SDH transmission network 20 and connected to the local station 36, the subscriber 30 and the remote subscriber 38 can communicate.

4 is an exemplary block diagram illustrating a connection between the subscriber 30 and the remote subscriber 38 of FIG. 3. Data from the subscriber 30 connected to the ASS of the mother station apparatus 28 is switched by the time switch 40 in the ASS of the mother station apparatus 29, and link cards 50 and 52 according to an embodiment of the present invention. Is applied to the space division switch 42 of the INS in the mother station 29 by STM-1 standard optical transmission. The applied data is spatially switched by the space division switch 42 and then formatted by the link card 54 to conform to the STM-1 standard shape. It is then applied to the local station 36 via the SDH transmission network 20 and the link card 56, switched by the time switch 44 in the ASS of the local station 26, and then the remote subscriber of the local station 26. Is passed to 38.

FIG. 5 is a block diagram illustrating each of the link cards 50, 52, 54, and 56 of FIG. 4 for converting to an STM-1 standard shape according to an embodiment of the present invention. Includes a flexor / demultiplexer 64, an STM-1 processor 66, a transmit data converter 68, a receive data converter 70, an optical transmitter module 72, and an optical receiver module 74 Doing.

The main functions of the link card 50, 52, 54, 56 according to an embodiment of the present invention is the transmission of PCM data, COC data and IPC data. Referring to FIG. 5, a specific operation of transmitting data is received by receiving PCM data and COC data from a time switch or a space division switch, and also receiving IPC data from a main processor (MP) or communication interworking (CI) block. 62) and multiplexed the payload section by the multiplexer / demultiplexer 64 and then formatted by the STM-1 processor 66 to fit the standard STM-1 configuration. The STM-1 standard signal processed by the STM-1 processing unit 66 is a parallel signal of 155 Mbps, which is converted into a serial signal by the transmission data conversion unit 68 and then the SDH transmission network as an optical signal by the optical transmission module 72. The received optical data is demultiplexed through the reverse process of the transmission process and separated into PCM data, COC data, and IPC data, and each time switch, space division switch, MP, CI block. Is sent.

FIG. 6 is a data format of 155.52 Mbps conforming to the STM-1 standard shape processed by link cards 50, 52, 54, and 56 according to an embodiment of the present invention, and includes section overhead (SOH) and Path overhead (POH) processing is processed by the STM-1 processing unit 66 of FIG. 5, and the remaining payload sections are processed by the multiplexer / demultiplexer 64. In the STM-1 standard configuration of FIG. 6, the payload section includes all PCM data, IPC data, COC data, maintenance data (M / A), and photoelectric conversion data (E / O).

In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be determined by the equivalent of claims and claims.

As described above, the present invention enables communication with the own station apparatus using the existing SDH transmission network without the need to newly install the optical cable for communication with the existing own station apparatus, thereby increasing the cost saving effect and increasing the line efficiency. The STM-1 standard configuration system of the same type as the embodiment of the present invention can have a great advantage when the home device is installed with the home device in a country where the country is wide and the existing SDH transmission network is well configured.

Claims (3)

A method of communicating between a home station subscriber and a home station subscriber through a synchronous digital hierarchy network, The pay station data includes a section overhead area and a path overhead area, a user data area, an internal processor communication data area, a disconnect call data area, a maintenance data area, and a photoelectric conversion data area. Formatting to a STM-1 standard format including a load region and connecting to the synchronous digital hierarchy network having a synchronous multiplexing layer; And formatting the subscriber station data in accordance with the STM-1 standard format and connecting the subscriber station data to the synchronous digital hierarchy transmission network having a synchronous multiplexing layer. The method of claim 1, wherein the STM-1 standard format, The section overhead area and path overhead area, 2048 channel user data area, 128 channel internal processor communication data area, 128 channel disconnect call data area, maintenance data area and photoelectric conversion data area. A communication method comprising a payload region that contains. A device in which a home station subscriber communicates with a home station subscriber through a synchronous digital hierarchy network: Located between the mother station and the synchronous digital hierarchy transmission network, and between the local station and the synchronous digital hierarchy transmission network, data of the subscriber station subscriber station data includes a section overhead area, a path overhead area, a user data area, and The synchronous digital hierarchical transmission network having a synchronous multiplexing layer formatted according to the STM-1 standard format including an interprocessor communication data area, a disconnected call data area, and a payload area containing a maintenance data area and a photoelectric conversion data area. And an STM-1 standard format device for formatting the subscriber station data in accordance with the STM-1 standard format and for connecting to the synchronous digital hierarchy network having a synchronous multiplexing layer. The STM-1 standard format device; A first processor configured to process the section overhead area and the path overhead area of the STM-1 standard format; A second processing section for processing the user data area of the STM-1 standard format, a communication data area between internal processors, a disconnect call data area, a payload area containing a maintenance data area and a photoelectric conversion data area; Communication device characterized in that.

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