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Passive optical network coding processing method and device

A technology of passive optical network and processing method, applied in the field of passive optical network coding processing method and device, capable of solving the problems of uplink channel burst error (bursterror, destroying the front end of LPDC code block, and no solution proposed)

Active Publication Date: 2019-07-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the upstream service of EPON / GPON is bursty and discontinuous, and there will be a phenomenon of burst error (burst error) in the upstream channel, that is, in the process of data transmission, special errors appearing in series, in the optical network unit ( ONU), if the "switching effect" of the burst error transmitter introduces non-uniform and correlated bit errors at the front of the code block (burst-first), the burst mode receiver will also get the burst error, generally speaking , the time slot occupied by the burst error of the code block front-end (burst-first) is 150ns, then for the 10G PON system, the bit length of the code block front-end (burst-first) is 1500bits
[0007] However, the existing technology does not clarify the unified rules of LDPC codewords. If the rules of LDPC codewords designed by various manufacturers are different, the rules of codewords received by the LDPC decoder are inconsistent with those of the transmitter, which will lead to LDPC codeword cannot be decoded
[0008] In the same way, the burst length (burst_length) will destroy the front end of the LPDC code block. If the position of the burst error and the position of the puncture are staggered from each other, the burst error bit will be spread to the entire code word, resulting in Code block decoding error
[0009] For the above-mentioned technical problems in related technologies, no effective solution has been proposed yet

Method used

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  • Passive optical network coding processing method and device
  • Passive optical network coding processing method and device
  • Passive optical network coding processing method and device

Examples

Experimental program
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Embodiment 1

[0056] An embodiment of the present invention provides a passive optical network, wherein the passive optical network may be a digital Ethernet passive optical network (Ethernet Passive Optical Network, EPON for short) / Gigabit-Capable PON , referred to as GPON), using Low Density Parity Check-Code (Low Density Parity Check-Code, referred to as LDPC) encoding, LDPC codeword length can be flexibly adjusted within a certain range according to the business needs of the uplink and downlink channels, but not limited to this.

[0057] figure 2For a schematic flowchart of a passive optical network coding process provided by an embodiment of the present invention, see figure 2 , the present invention provides a passive optical network coding processing method, the method includes:

[0058] S101. Preset the sequential transmission order of the codewords of each region in the encoding.

[0059] S102: Send each regional codeword to the receiving end according to the sequential delive...

Embodiment 2

[0081] image 3 For a schematic diagram of a passive optical network coding process provided in Embodiment 1 of the present invention, see image 3 , in this embodiment, the parameters generally represented in the coding of the transmitting end include code words, code rates, information bits, check bits, puncturing check bits, zero-filling or puncturing information bits, etc. Bit checking, puncturing check digit, zero-filling or puncturing information bits correspond to different regions in the encoding respectively. In this embodiment, it is assumed that the codeword length is L bits and the code rate is x, then the information bit length L_s=L *x, check digit length L_p=L-L_s;

[0082] Assuming that the parity puncturing length is p bits, the remaining parity length L_p_0=L_p-p;

[0083] Assuming that the information bits are zero-filled or the puncturing length is s bits, the actual transmitted information bit length L_s_0=L_s-s;

[0084] Therefore, after puncturing and...

Embodiment 3

[0090] Figure 4 For a schematic diagram of a passive optical network coding process provided in Embodiment 1 of the present invention, see Figure 4 , in this embodiment, the parameters generally represented in the coding of the transmitting end include code words, code rates, information bits, check bits, puncturing check bits, zero-filling or puncturing information bits, etc. Check bits, puncturing check bits, zero-filling, or puncturing information bits are in different regions in the encoding. In this embodiment, assuming that the codeword length is L bits and the code rate is x, the information bit length L_s=L *x, check digit length L_p=L-L_s;

[0091] Assuming that the parity puncturing length is p bits, the remaining parity length L_p_0=L_p-p;

[0092] Assuming that the information bits are zero-filled or the puncturing length is s bits, the actual transmitted information bit length L_s_0=L_s-s;

[0093] Therefore, after puncturing and zero-filling, the actual tran...

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Abstract

The invention provides a passive optical network coding processing method and device and a transmitting end, and the method comprises the steps that the transmitting end presets a sequential transmission sequence of code words in each region in a code, and sends the code words in each region to a receiving end according to the sequential transmission sequence. According to the invention, the problem that decoding cannot be achieved due to the fact that a unified rule that a transmitting end transmits code words clearly does not exist in an existing passive optical network technology can be solved, and a passive optical network receiving end can complete decoding better according to the sequential transmission sequence of the code words of all areas in preset passive optical network transmitting end encoding.

Description

technical field [0001] The present invention relates to the field of optical communication, in particular, to a passive optical network coding processing method and device. Background technique [0002] At present, PON (Passive Optical Network) passive optical network is the main technology to realize fiber-to-the-home, providing point-to-multipoint fiber access. Among them, Ethernet Passive Optical Network (EPON for short) and Gigabit Optical Network Passive Optical Network (Gigabit-Capable PON, GPON for short) is the two main members of passive optical network access. [0003] In the related art, with the introduction of Low Density Parity Check-Code (LDPC) coding in the EPON / GPON system, the length of the LDPC code word can be flexibly adjusted within a certain range according to the service requirements of the uplink and downlink channels. [0004] For example: 25G PON LDPC codeword design such as figure 1 As shown, the second area is 2816 bits of check bits, the third...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H03M13/11
CPCH03M13/1165H04B10/516H04L1/0057H04L1/0061H04L1/0068H03M13/11H04L1/00
Inventor 刘铮袁立权张伟良
Owner ZTE CORP