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Physical layer coding and decoding methods and devices

A coding method and physical layer technology, applied in the field of codec, physical layer codec method and its device, can solve the problem that the 64B/66B coding method cannot meet the RS-FEC algorithm, etc.

Active Publication Date: 2015-03-18
HUAWEI TECH CO LTD
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Problems solved by technology

[0005] With the introduction of the 400G Ethernet standard, due to the use of high-speed interfaces and high-order modulation technologies, the use of higher gain RS-FEC (Reed-Solomon Forward Error Correction, Reed-Solomon Forward Error Correction) scheme has become the future development trend, but the 64B / 66B encoding method cannot meet the needs of the RS-FEC algorithm

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  • Physical layer coding and decoding methods and devices
  • Physical layer coding and decoding methods and devices
  • Physical layer coding and decoding methods and devices

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[0108] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0109] Since 64B / 66B no longer meets the requirements of future high-gain FEC (Forward Error Correction, Forward Error Correction), there is currently an extended evolution solution, that is, 64B / 66B encoding plus 256B / 257B transcoding. In this scheme, for the 256-bit full data mode, the transcoding scheme is as follows Figure 2AAs shown, wherein, DB represents a 64-bit Data Block (data code block), and "01" is the synchronization header ...

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Abstract

Disclosed are a physical layer coding / decoding method and an apparatus thereof, comprising: receiving inputted MII (Media Independent Interface) control code blocks and first 256-bit to-be-coded code blocks; determining control code blocks in the first 256-bit to-be-coded code blocks according to the MII control code blocks, and compressing the determined control code blocks; determining physical layer coding format, sync field value, the hierarchy of Block Type Field and the value of Block Type Field according to the MII control code blocks; mapping the compressed to-be-coded code blocks into data in a format of physical layer data according to the determined physical layer coding format, adding sync field to the data, the value of the added sync field being the determined sync field value, adding Block Type Field into a space obtained by compression according to the hierarchy of Block Type Field in order to obtain a coding result, and the value of the added Block Type Field being the determined value of Block Type Field. The physical layer coding / decoding method can be used to meet the demands of RS-FEC (Reed-Solomon Forward Error Correction) algorithm.

Description

technical field [0001] The present invention relates to codec technology in the communication field, in particular to a physical layer codec method and device thereof. Background technique [0002] The 100G Ethernet physical layer includes PCS (Physical Coding Sublayer, physical coding sublayer), PMA (Physical Medium Attachment, physical medium connection) sublayer and PMD (Physical Media Dependent, physical medium related) sublayer from top to bottom. Wherein, the PCS is located between the RS (Reconciliation Sublayer, coordination sublayer) and the PMA sublayer of the MAC (Media Access Control, media access control) layer. The interface between the PCS and the upper RS / MAC sublayer is provided by XGMII (XG Media Independence Interface, media-independent interface, where, for 100G Ethernet, "CGMII" represents 100G). PCS is used to map an Ethernet MAC function to the function of coding and physical layer signal system. The current 100G Ethernet standard 802.3ba stipulates ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00
CPCH04L1/00H03M7/30H03M13/1515H04L1/0057H03M13/6312H04L69/22
Inventor 杨文斌王童童
Owner HUAWEI TECH CO LTD
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