Search

CN-122001525-A - Signal transmission method and device

CN122001525ACN 122001525 ACN122001525 ACN 122001525ACN-122001525-A

Abstract

The application provides a signal transmission method and a signal transmission device, which can support higher-speed signal transmission and improve the reliability of transmission. The method comprises the steps of obtaining a first signal, conducting interleaving processing on the first signal based on 10-bit symbol granularity to obtain a second signal, and sending the second signal. The first signal includes 32 logic channel signals, for example, the first signal may be generated by 8 paths of 100Gbit/s, or 4 paths of 200Gbit/s, or 2 paths of 400Gbit/s, or 1 path of 800Gbit/s OTN signals, the first signal is subjected to the first FEC process, and the second signal includes 4 paths of physical channel signals.

Inventors

  • SU WEI
  • XIAO JUNXIONG
  • TAN JIEZHEN

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20250912
Priority Date
20241101

Claims (20)

  1. 1.A method of signal transmission, comprising: acquiring a first signal, wherein the first signal is generated by m paths of x 25Gbit/s Optical Transport Network (OTN) signals, the first signal is subjected to first FEC processing, m is an integer greater than 1, and x is an integer greater than or equal to 1; Based on 10 x n bit symbol granularity, interleaving the first signal to obtain a second signal, wherein the second signal comprises (m x)/8 paths of physical channel signals, and n is an integer greater than or equal to 1; And transmitting the second signal.
  2. 2. The method according to claim 1, wherein the method further comprises: Performing second FEC processing on the second signal to obtain a third signal; And transmitting the third signal.
  3. 3. The method of claim 2, wherein the second signal is inserted with padding information after the second FEC process.
  4. 4. A method according to claim 3, characterized in that the size of the padding information is 8 x 128b.
  5. 5. The method according to claim 3 or 4, wherein the insertion interval of two adjacent pieces of the padding information is 8704 x 128b or 8 x 4096 x 128b.
  6. 6. The method according to any of claims 1 to 5, wherein the second signal comprises a bit rate of 223.618Gbit/s, or 213.865Gbit/s, or 214.304Gbit/s, or 213.836Gbit/s per channel of physical channel signal.
  7. 7. The method according to any of claims 2 to 6, wherein the third signal comprises a bit rate of 238.746Gbit/s, or 238.585Gbit/s, or 228.332Gbit/s, or 228.800Gbit/s, or 228.301Gbit/s per channel of physical channel signals.
  8. 8. The method according to any one of claims 3 to 7, wherein when the insertion interval of two adjacent filler information is 8704 x 128b, the bit rate of each physical channel signal included in the third signal is 238.746Gbit/s.
  9. 9. The method according to any one of claims 3 to 7, wherein when the insertion interval of two adjacent filler information is 8 x 4096 x 128b, the third signal comprises a bit rate of 238.585Gbit/s for each physical channel signal.
  10. 10. The method according to any one of claims 1 to 9, wherein prior to acquiring the first signal, the method further comprises: Generating at least one path of FlexO signals with y being 100Gbit/s, and executing RS coding on the at least one path of FlexO signals with y being 100bit/s to obtain the first signal, wherein y is an integer greater than or equal to 1.
  11. 11. The method of claim 10, wherein generating at least one path of y x 100Gbit/s FlexO signals comprises: Mapping an optical transmission unit OTUCy signal to a flexible optical transport network FlexO signal, the FlexO signal including at least y-way FlexO instance signals, each of the FlexO instance signals having a bit rate of 100Gbit/s; And interleaving the at least y-way FlexO example signals to obtain at least one y-way FlexO signal of 100 Gbit/s.
  12. 12. The method according to any one of claims 1 to 11, wherein the first signal is a flexible optical transport network FlexO frame.
  13. 13. The method according to any one of claims 1 to 12, wherein n = 2.
  14. 14. A method of signal transmission, comprising: Receiving a second signal, wherein the second signal comprises (m x)/8 paths of physical channel signals, m is an integer greater than 1, and x is an integer greater than or equal to 1; And de-interleaving the second signal based on 10x n bit symbol granularity to obtain a first signal, wherein the first signal is generated by m paths of Optical Transport Network (OTN) signals with x 25Gbit/s, the first signal is subjected to first FEC processing, and n is an integer greater than or equal to 1.
  15. 15. The method of claim 14, wherein the method further comprises: Receiving a third signal; And performing a third FEC process on the third signal to obtain the second signal.
  16. 16. The method of claim 15, wherein the second signal is inserted with padding information after the second FEC process.
  17. 17. The method of claim 16, wherein the padding information has a size of 8 x 128b.
  18. 18. The method according to claim 15 or 16, wherein the insertion interval of two adjacent pieces of the padding information is 8704 x 128b or 8 x 4096 x 128b.
  19. 19. The method according to any of claims 14 to 18, wherein the second signal comprises a bit rate of 223.618Gbit/s, or 213.865Gbit/s, or 214.304Gbit/s, or 213.836Gbit/s per channel of physical channel signal.
  20. 20. The method according to any of claims 15 to 19, wherein the third signal comprises a bit rate of 238.746Gbit/s, or 238.585Gbit/s, or 228.332Gbit/s, or 228.800Gbit/s, or 228.301Gbit/s per channel of physical channel signals.

Description

Signal transmission method and device The present application claims priority from the chinese patent application filed at month 11 and 01 of 2024, filed with the chinese national intellectual property agency, application number 202411562466.0, entitled "a signal transmission method and apparatus", the entire contents of which are incorporated herein by reference. Technical Field The present application relates to the field of optical communications, and more particularly, to a signal transmission method and apparatus. Background Optical networks are gradually evolving towards ultra-high speed transmission technologies, for example, optical transport network (optical transport network, OTN) technologies with rates of 100G, 400G, or 800G are gradually becoming the main choice of transmission networks. The OTN is a wavelength division multiplexing transmission network based on optical fiber interconnection, and for a high-speed optical port, multiple sub-channels are supported for carrying different services by means of time division multiplexing (time division multiplexing, TDM) time slot division. Illustratively, the FlexO-8-RS frame structure is suitable for use with a multi-channel parallel interface using 8 physical channels with a transmission rate of 112Gbit/s, such as the FOIC 8.8.8-RS interface. With the increase in device process capability, how to provide higher rate signal transmission is a major concern. Disclosure of Invention The application provides a signal transmission method and device, which can support signal transmission at a higher rate and improve the reliability of transmission. In a first aspect, a signal transmission method is provided. The method may be performed by the transmitting device, and the "transmitting device" in the present application may refer to the transmitting device itself, a component (e.g., a communication module, a processor, a circuit, a chip, or a chip system) in the transmitting device, or a logic module or software that can implement all or part of the functions of the transmitting device, which is not limited in this regard. The method comprises the steps of obtaining a first signal, wherein the first signal comprises 32 paths of logic channel signals, the first signal is generated by 8 paths of 100Gbit/s, or 4 paths of 200Gbit/s, or 2 paths of 400Gbit/s, or 1 path of 800Gbit/s optical transport network OTN signals, the first signal is subjected to first Hamming forward error correction (hamming forward error correction, FEC) processing, and based on 10-bit symbol granularity, interleaving the first signal to obtain a second signal, the second signal comprises 4 paths of physical channel signals, and the second signal is sent. Based on the scheme, the first signal is subjected to interleaving processing with 10-bit symbol granularity to obtain the second signal, specifically, 32 paths of logic channel signals are subjected to interleaving processing according to 10-bit symbol granularity every 8 paths of logic channel signals, and then 4 paths of physical channel signals are obtained. For example, the rate level of the first signal may be 800Gbit/s, the first signal is generated by 8 paths of OTN signals with 100Gbit/s, the rate level of each 1 path of logic channel signal is 25Gbit/s, after interleaving, the rate level of each 1 path of physical channel signal is 200Gbit/s, and the optical module with 4 x 200g can support higher rate signal transmission, so as to achieve the purposes of upgrading and reducing cost. In addition, the 10-bit symbol granularity is used for interleaving treatment, so that the signal distribution granularity and the interleaving granularity are kept consistent and are 10 bits, the integrity of the symbols can be ensured, the subsequent FEC coding treatment is convenient, and the transmission reliability is improved. Illustratively, the 32-way logical channel signal may be a flexible OTN interface (flexible OTN interface, FOIC) signal, such as a FOIC8.32 signal, where 8 represents the number of FOIC channels split from the FlexO interface at 800g and 32 represents the FlexO interface that generated the FOIC 8.32.32 signal. The logical channel may be a logical channel internal to Framer. Illustratively, the 4-way physical channel signal may be a FOIC signal or a FOIC 8.4.4-RS signal, such as a FOIC 8.4.4 signal. It should be noted that the above 8 paths of 100Gbit/s, or 4 paths of 200Gbit/s, or 2 paths of 400Gbit/s, or 1 path of 800Gbit/s refer to rate levels, and the higher the rate level, the faster the transmission rate of the signal, so as to meet the requirement of higher transmission performance. With reference to the first aspect, in some implementation manners of the first aspect, the method further includes performing a second FEC process on the second signal to obtain a third signal, and transmitting the third signal. It can be understood that the second FCE processing in the technical scheme of the present application i