KR0149597B1 - Simple multiplexing/demultiplexing 1.2ghz optical transmitter using 8 channel dividing information - Google Patents

Abstract

The present invention transmits channel division information using only 8 out of 24 64Kbps channels in a 1.2 optical transmission device which multiplexes and transmits 24 51.84 Mbps frames and demultiplexes them and rearranges them into 24 51.84 Mbps frames. Is a device for enabling use as a maintenance channel, and relates to a simple multi / demultiplex 1.2 Gigabit optical transmission apparatus using eight channel classification information. Since all 24 64Kbps channels are used for information transmission, there is a problem that a channel for maintenance is not provided. Therefore, in order to solve this problem, the present invention has been used for channel classification information transmission. Only eight of 64 Kbps channels are used, and the remaining 16 channels are used for the transmission of maintenance data. And it was allowed to extract the location information using the 8 channel sorting information, and also so as to generate position information of the adjacent channels 24 Channel alignment is performed by maintaining the channel is configured for that.

Description

Simple multi / demultiplex 1.2 Gigabit optical transmission device using 8 channel classification information

1 is a block diagram of a 24: 1 multiplexing means in the present invention.

2 is a block diagram of 1:24 demultiplexing means in the present invention.

3 is a block diagram of channel classification information detection and distribution means in the present invention.

FIG. 4 is a detailed block diagram of the channel classification information detection and generation unit in FIG.

FIG. 5 is an exemplary circuit diagram of a channel classification information generator of FIG.

6 is a circuit diagram illustrating a frame data detection and latching unit in FIG. 4;

FIG. 7 is an exemplary circuit diagram of a position classification information detector of FIG. 4; FIG.

FIG. 8 is a circuit diagram of an embodiment of the positional information data latch and parity check unit of FIG.

FIG. 9 is an exemplary circuit diagram of a channel classification information generator of an adjacent channel in FIG. 4.

* Explanation of symbols for main parts of the drawings

10: channel classification information generation unit 20: 51M framer

30: data shift part 40: 3: 1 multiplexer

50: 8: 1 Multiplexer 60: 1.2G Optical Transmitter

70: 1.2G Optical Receiver 80: 1: 8 Demultiplexer

90: 1: 3 Demultiplexer 100: 51M Leaf Rammer

110: channel identification information detection and generation unit

111: frame data detection and latch unit

112: location classification information detection unit

113: position identification data latch and parity check unit

114: channel classification information generation unit of the adjacent channel

120 ~ 140: Distribution switch

The present invention transmits channel division information using only 8 out of 24 64Kbps channels in a 1.2 optical transmission device which multiplexes and transmits 24 51.84 Mbps frames and demultiplexes them and rearranges them into 24 51.84 Mbps frames. Is a device for enabling a maintenance channel and relates to a simple multiple / demultiplex 1.2 Gigabit optical transmission device using eight channel classification information.

In general, in the 1.2 Gigabit optical transmission apparatus using simple multiple / demultiplex, all 24 64Kbps channels are used for information transmission for channel classification information. Therefore, there is a problem in that a channel for maintenance is not provided.

In view of the above, the present invention uses only eight of the 24 64Kbps channels that have been used for channel division information transmission and uses the eight channel classification information while using the remaining 16 channels as a transmission channel for maintenance data. The location information is extracted using the extracted location information, and the location information of the adjacent channel is also generated to perform 24 channel alignment.

That is, according to the present invention, 24 channel division information capable of distinguishing each of 24 channels by outputting 24 44.736 Mbps data, 2.048 Mbps data, and 64 Kbps data by multiplexing to 24: 1 is output. 24: 1 multiplexing means and: 1: 24 demultiplexing means for outputting data in the order inputted first by channel division information while demultiplexing to 1: 24 by double demultiplexing by inputting the output signals; It consists of the channel classification information detection and distribution means for inputting each of the 24 signals output from the 24 demultiplexing means to be distributed to each subscriber device, wherein in the configuration of the present invention, 24: 1 multiplexing means is input Eight channel classification information is generated to input channel classification information for distinguishing each 51Mbps frame into eight channels among 24 64Kbps channels. And a channel classification information generation unit, and the channel classification information detecting and distributing means receives 24 64kbps data among the data demultiplexed and output from the 1:24 demultiplexing means, and extracts eight 64Kbps channels containing the channel classification information. And a channel segmentation information detecting and generating unit for generating channel segmentation information of the adjacent channel and generating and outputting an input / output address for inputting and outputting data of each channel to the distribution switch of the 44.736 Mbps data, the 2.048 Mbps data, and the 64 Kbps data. Is an important feature.

In general, eight formats of channel classification information to be input to eight channels of the 24 64 Kbps channels are performed as follows.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

1 shows a block diagram of a 24: 1 multiplexing means for multiplexing and outputting 24 frame data in the present invention.

51M framer 20 which inputs 24 44.736Mbps data and 2.048Mbps data, 16 64Kbps data for maintenance transmission, and 64Kbps data for 8 channel division information transmission to make a frame of 51Mbps: The 51M framer (20 Channel segmentation information generation unit 10 for generating 8 channel segmentation information for inputting channel segmentation information for distinguishing each 51Mbps frame into 8 channels out of 24 64Kbps channels inputted by And a data shift unit 30 for shifting 51M frame data output from the 51M framer 20 in units of frames in order to avoid continuous 1 or 0 repetition caused by multiplexing. 3: 1 multiplexer 40 for multiplexing data to 3: 1 and 8 for multiplexing the eight: 1 multiplexed frame data to 8: 1 And a 1.2G optical transmitter 60 which is multiplexed with the 8: 1 multiplexer 50 and outputs frame data of 1.2Gbps as an optical signal.

2 shows a block diagram of the 1:24 demultiplexing means for demultiplexing and distributing the optical signals outputted from the 24: 1 multiplexing means to 24 subscribers, respectively.

The 1.2G optical receiver 70 which inputs an optical signal from the 1.2G optical transmitter 60 of the 24: 1 multiplexing means, converts the optical signal into an electrical signal, and outputs the decoded 1.2G frame data to 1: 8. 1: 8 demultiplexer 80 and 1: 3 demultiplexer 90 to demultiplex the frame data demultiplexed as 1: 8 into 1: 3 demultiplexer 90 and: the 24 51M frame data It is composed of 51M leaframer 100 for re-rambling one data of 44.736Mbps, one data of 2.048Mbps, and one data of 64Kbps.

FIG. 3 is a block diagram of channel segmentation information detecting and distributing means for inputting and processing 24 pieces of data output from the 51M leaf reamer 100 of FIG.

Distribution switch 120 (130) for switching so that 24 44.736 Mbps data and 2.048 Mbps data and 16 maintenance 64 Kbps data separated from 51M leaframer 100 can be distributed to each subscriber device. 140 and: Receive 24 64Kbps data of data separated and output from the 51M leaframer 100 to extract eight 64Kbps channels containing channel classification information, and generate channel classification information of the adjacent channel. Channel classification information detection and generation unit 110 generates and outputs an input / output address for inputting and outputting data of each channel to distribution switches 120, 130, and 140 of 44.736 Mbps data, 2.048 Mbps data, and 64 Kbps data. .

FIG. 4 is a detailed block diagram of the channel classification information detecting and generating unit 110 in FIG.

Frame data detection and latching unit 111 for inputting 24 64 Kbps serial data to detect the frame word, and shifting and latching the next 5 bits. When the 5 bits following the frame word are latched, the channel of the corresponding serial data line is latched. A position classification information detecting unit 112 for detecting which channel among the three channels that are sequentially input: and when the position classification information is generated, input three channels which are sequentially input to latch the position classification information data and thereby parity Position classification information data latching unit and parity check unit 113 for checking information: generating channel classification information of an adjacent channel based on position information of a channel having channel classification information detected by the position classification information detecting unit 112. And a channel segmentation information generator 114 of an adjacent channel.

FIG. 5 is a circuit diagram of the channel classification information generation unit 10 in FIG. 1. In order to generate an input address for generating channel classification information in the channel classification information generation unit 10, 64 4M clocks are divided. Generate and enter a 64 Kbps clock. Eight channel classification information is generated using the input 64 Kbps clock, because only eight data channels of 64 Kbps on which channel classification information is to be loaded are used.

FIG. 6 is a circuit diagram of the frame data detection and latching unit 111 in FIG. 4. In order to align data inputted in a different order while being transmitted in accordance with the channel classification information generated by the 24: 1 multiplexing means, FIG. Channels containing channel classification information are searched among 64 Kbps channel data. In this case, it is the frame word (E8: hexacode value) (11101000: binary code value) located at the foremost point that specifies the channel classification information on the channel currently input in the format of the channel classification information. When this frame word is detected, the next five bits are shifted to latch the corresponding data.

FIG. 7 is a circuit diagram of the position classification information detecting unit 112 in FIG. 4. When the frame word is detected by the frame data detecting and latching unit 111 and the next 5 bits are latched, the corresponding serial data line Create position classification information indicating which channel is the 3rd channel that is sequentially input. That is, for example, if the channel having the channel classification information is the first channel, the second and third channel data are generated. If the channel classification information is the third channel, the first and second channel data are generated.

FIG. 8 is a circuit diagram of the position classification information data latch and parity check unit 113 in FIG. 4. The data of position classification information detected by the position classification information detecting unit 112 is sequentially latched from serial data input. And parity information is checked accordingly.

FIG. 9 is an exemplary circuit diagram of the channel classification information generation unit 114 of the adjacent channel in FIG. 4. The channel classification information of the adjacent channel is generated based on the location classification information detected by the location classification information detecting unit 112. do.

Accordingly, input / output addresses are input to each of the distribution switches 120, 130, and 140 so that channel alignment is performed in the order in which they were initially transmitted.

The operation of the present invention having the above configuration will be briefly described as follows.

The present invention is a simple bit interleaving simple transmission device, not a conventional synchronous optical network (SONET) format, in a synchronous transmission device using 51M as a basic unit of transmission. / 100) using 24 Application Software ICs (ASICs) to transmit 24 51M multiplexed 24: 1 to 1.2Gbps, and the receiver demultiplexes 1.2Gbps data to 1:24 It extracts 24 51Mbps data. At this time, 51M data is outputted after the order of transmission is changed.In order to arrange the data in the order of initial data input, the channel alignment data is transmitted using the 51K framer's 64Kbps channel, and the channel classification information is transmitted among the 24 64Kbps channels. Only 8 channels are used and the remaining 16 64Kbps channels are used as a channel for transmitting maintenance information. When the channel classification information is loaded into the receiving unit only in the eight channels like this, after all demultiplexing is finished, the channel classification information for the remaining 16 channels is generated by using the eight channel classification information. By using this as an input / output address of the 32 × 32 distribution switch 120, 130 and 140, the data order of the initial input state can be restored and 51M data can be transmitted to a desired channel.

As described above, according to the present invention, eight of the 24 64 Kbps channels are used for transmitting channel classification information, and 16 are used for transmitting maintenance information, thereby enhancing the maintenance function of the transmission apparatus.

Claims (6)

In constructing a synchronous transmission device that uses 51 Mbps as the basic unit of transmission, each of the 24 can be distinguished by 24x1 multiplexing by 24x1 44x736 data, 2.048Mbps data, and 64Kbps data. 24: 1 multiplexing means for outputting channel division information to eight channels for outputting; A 1:24 demultiplexing means for inputting the output signals and performing double demultiplexing to demultiplex to 1:24 while outputting data in the order originally inputted by the channel classification information; Eight channels, characterized in that the channel classification information detection and distribution means for inputting each of the 24 signals output from the 1:24 demultiplexing means to be distributed to each channel to transmit 51Mbps data to the desired channel 1.2 Gigabit optical transmission device using simple / demultiplex information using classification information. 2. The apparatus of claim 1, wherein the 24: 1 multiplexing means inputs 24 44.736Mbps data and 2.048Mbps data, 16 64Kbps data for maintenance transmission, and 64Kbps data for 8 channel classification information transmission. 51M framer 20 to make; Channel segmentation information generation unit 10 for generating 8 channel segmentation information for inputting channel segmentation information for distinguishing each 51Mbps frame into 8 channels of 24 64Kbps channels inputted to the 51M framer 20 Wow ; A data shift unit 30 for shifting 51M frame data output from the 51M framer 20 in units of frames in order to avoid continuous 1 or 0 repetition due to multiplexing of a simple bit interleaving method; A 3: 1 multiplexer 40 for multiplexing the 24 pieces of 51M frame data into 3: 1; An 8: 1 multiplexer 50 for multiplexing the 3: 1 multiplexed frame data to 8: 1; 8. The simple multiple / demultiplex 1.2 Gigabit optical transmission apparatus using eight channel classification information, characterized by consisting of a 1,2G optical transmitter 60 which is multiplexed to 8: 1 and outputs frame data of 1.2Gbps as an optical signal. The 8 channel classification information of claim 2, wherein the channel classification information generating unit 10 divides the 4M clock into 64 to generate a 64 Kbps clock to generate an input address for generating the channel classification information. Simple multi / demultiplex 1.2 Gigabit optical transmission device. The 1.2G optical receiver 70 of claim 1, wherein the 1:24 demultiplexing means receives an optical signal from the 1.2G optical transmitter 60 of the 24: 1 multiplexing means, converts the optical signal into an electrical signal, and outputs the electrical signal. The 1: 8 demultiplexer 80 demultiplexes the received 1.2G frame data into 1: 8 and the 1: 8 demultiplexes the frame data demultiplexed into 1: 3 into 1: 3 to demultiplex into 24 frame data. 3 demultiplexer 90 and 8, characterized in that the 24 51M frame data each consists of a 51M leaframmer 100 for re-raising one 44.736Mbps data, one 2.048Mbps data, and one 64Kbps data 1.2 Gigabit optical transmission device using multiple channel classification information. 2. The apparatus of claim 1, wherein the channel classification information detecting and distributing means comprises 24 44.736 Mbps data and 2.048 Mbps data separated from the 51M leaframer 100 of the 24: 1 demultiplexing means, and 16 for maintenance. Distribution switch 120, 130 and 140 for switching the 64Kbps data to be distributed to each subscriber device: Channel classification by receiving 24 64Kbps data from the data output separately from the 51M leaframer 100 Eight 64Kbps channels containing information are extracted, and channel classification information of adjacent channels is generated, and data of each channel is distributed to the distribution switches 120, 130, and 140 of the 44.736 Mbps data, 2.048 Mbps data, and 64 Kbps data. Simple multiple / demultiplex 1.2 using eight channel classification information, characterized in that the channel identification information detection and generation unit 110 for generating and outputting an input and output address to input and output Gigabit optical transmission device. The apparatus of claim 5, wherein the channel classification information detecting and generating unit 110 detects a frame word by inputting 24 64 Kbps serial inputs, and shifts and latches the next 5 bits. When the 5 bits following the frame word are latched, the position classification information detecting unit 112 detects which channel among the three channels that are sequentially inputted. Position classification information data latching unit and parity check unit 113 for latching the position classification information data by inputting three channels and checking parity information according thereto: having the channel classification information detected by the position classification information detecting unit 112. And a channel segmentation information generating unit 114 of the adjacent channel generating the channel segmentation information of the adjacent channel based on the position information of the channel. Simple multi / demultiplex 1.2 Gigabit optical transmission device using 8 channel classification information.