Method and device for generating related sequence number

A generation method and technology of a generation device are applied in the direction of data exchange, digital transmission system, electrical components, etc. through path configuration, which can solve the problems of the large scale of PRBS correlation sequence code generators, and achieve the goal of reducing complexity and implementation cost. Effect

Inactive Publication Date: 2007-06-20
HUAWEI TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0008] In order to solve the large-scale problem of the PRBS correlation sequence code generator in the concatenation mode in the prior art, the present invention provides a method and device for generating the correlation sequence code, which can avoid the sequence codes between the channels in the concatenation mode. Correlation, thereby reducing the complexity and scale of the correlation sequence code generator, and reducing the implementation cost of the hardware chip scale

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  • Method and device for generating related sequence number
  • Method and device for generating related sequence number
  • Method and device for generating related sequence number

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Divide 2.5G bandwidth into 4 channels of 622M serial data, convert it into 8bit through serial-parallel conversion module, and process it with 77M clock, and the data is in non-cascade mode;

[0049] The query module of the sequence code generator established in step 2 searches from the incremental mode table established in step 1 and knows that the sequence code increment is 1 in the non-cascade mode, so the sequence code generation module generates the relevant sequence codes of each channel : 0,1,2,3,4,5,6,7,8...... as shown in Figure 5.

Embodiment 2

[0051] Divide 2.5G bandwidth into 4 channels of 622M serial data, convert them into 8bit through serial-to-parallel conversion module, and process them with 77M clock. The data are 2 channels 3C cascade mode and 1 channel 6C cascade mode;

[0052] The query module of the sequence code generator established in step 2 searches from the incremental mode table established in step 1 and knows that the sequence code increment in 3C cascade mode is 3, and the sequence code increment in 6C cascade mode is 6, so The relative sequence codes of each path are generated by the sequence code generation module, as shown in Figure 6.

Embodiment 3

[0054]Divide 2.5G bandwidth into 4 channels of 622M serial data, convert it into 8bit through serial-parallel conversion module, and process it with 77M clock. The data is in 12C cascade mode;

[0055] The query module of the sequence code generator established in step 2 searches from the incremental mode table established in step 1 and knows that the sequence code increment is 12 in the 12C cascade mode, so the sequence code generation module generates the relevant sequence codes for each channel , As shown in Figure 7.

[0056] In the above three embodiments, when the relevant sequence code needs to be inserted, only the previous code value in the channel needs to be known, and the sequence code generation device can generate the sequence to be inserted according to the increment of the sequence code in the corresponding cascade mode. The code removes the correlation with other channels, as shown in Figure 8, thus greatly reducing the complexity of the generation device and meth...

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Abstract

This invention discloses a kind of method and device to produce the correlating sequence code. It belongs to the field of testing the performance of the network by pseudo-random binary sequence code. Establish the table-building and code-producing device. Table-building device establishes the incremental mode table associated with the sequences code for different cascade model, and produces the correlating sequence code for each channel according to the incremental mode table. The correlating sequence code producing method and device in this invention removes the connection between different channels in the cascade model, so when it is time to insert the PRBS code; it is only needed to know the last code in this channel without the inquiry in other channel. As the result, it largely reduces the complexity of the producing device and method, as well as the cost.

Description

Technical field [0001] The invention relates to the field of network performance testing through pseudo-random binary sequence codes, in particular to a method and device for generating pseudo-random binary sequence codes. Background technique [0002] In a SONET network, in order to test the performance of the network, a pseudo-random binary sequence (PRBS, Pseudo Random Binary Sequence) code is usually inserted into the SONET payload area to detect the bit error rate of the network. PRBS is a related code sequence. For the generator of the code sequence, knowing the previous code value can determine the next code value. For example, an integer sequence generator can generate 1, 2, 3, 4, 5... digital sequences. When we want to generate the current code value, just tell it that the previous code value is 5, and he can generate 6. [0003] Refer to Figure 1, a 622M STS-12 serial input, with 12 STS-1 multiplexed internally. After the serial 622M data enters the chip, it is serial-p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L12/56H04L12/42
Inventor 宋天宁
Owner HUAWEI TECH CO LTD
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