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A device and method for mutual conversion between 8b/10b code and 64b/66b code

A technology for encoding and encoding data, applied in the network field, can solve the problems of consuming optical fiber materials, optical fiber laying cost, low transmission distance and speed, etc., and achieve the effect of saving optical fiber cost, saving transmission rate, and efficient and simple logic development.

Active Publication Date: 2021-07-20
广州芯德通信科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For the optical line terminal (OLT: Optical Line Terminal), its PON port adopts a single-fiber bidirectional optical transmission network with a point-to-multipoint (P2MP) structure, and a wavelength division combination of downlink 1490nm / uplink 1310nm wavelength is used on a single fiber. Multiplexing technology (WDM), the uplink direction is point-to-point mode using time division multiplexing technology (TDM), the downlink direction is broadcast mode, its transmission rate is 1.25Gbps, and 8B / 10B encoded data is used for transmission, each PON port can only Use independent optical fibers for transmission, that is, the OLT of 8PON needs to use 8 independent optical fibers to transmit each pon data. For PON long-distance transmission, it needs to consume a lot of optical fiber materials and optical fiber laying costs, and the transmission distance and rate are different. not tall

Method used

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  • A device and method for mutual conversion between 8b/10b code and 64b/66b code
  • A device and method for mutual conversion between 8b/10b code and 64b/66b code
  • A device and method for mutual conversion between 8b/10b code and 64b/66b code

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Embodiment 1

[0078] The present invention provides a device for mutual conversion between 8B / 10B encoding and 64B / 66B encoding, including an 8-to-64 module and a 64-to-8 module, wherein the 8-to-64 module includes (refer to figure 1 ):

[0079] Channel 1 to channel 8, used to transmit 8 groups of 10bit data;

[0080] Buffer 1 to Buffer 8 are connected to Channel 1 to Channel 8 in one-to-one correspondence, and are used to cache 8 sets of 10bit data;

[0081] 8B / 10B decoding unit 1 to 8B / 10B decoding unit 8 are connected with buffer 1 to buffer 8 in one-to-one correspondence, and are used to convert 8 sets of 10bit data to be sent into 8 sets of 8bit data;

[0082] 8 to 64 units, connected with 8B / 10B decoding unit 1 to 8B / 10B decoding unit 8, used to synthesize 8 groups of 8-bit data output in parallel after decoding on 8 channels into a group of 64-bit data;

[0083] The data delay processing unit is connected with channel 1 to channel 8, buffer 1 to buffer 8, and 8 to 64 units, and is ...

Embodiment 2

[0111] The present invention also provides a method for mutual conversion of 8B / 10B coding and 64B / 66B coding, which is divided into 8 to 64 modules, that is, 8B / 10B coding to 64B / 66B coding; 64 to 8 modules, that is, 64B / 66B coding to 8B / 10B encoding.

[0112] The 8 to 64 module includes the following steps:

[0113] Step TS1: Perform 8-channel data detection, and output a synchronous signal SYN to control the buffer and the 8-to-64 unit to output data to the lower level;

[0114] Step TS2: The 8-to-64 unit decodes the 8-way data and merges them into a set of 64-bit data;

[0115] Step TS3: Perform 64B / 66B encoding and transmission on the 64bit data.

[0116] The 64 to 8 module includes the following steps:

[0117] Step RS1: Decode the data transmitted from the 8-to-64 module and split it into 8 groups of 8-bit data and distribute them to the corresponding 8 channels;

[0118] Step RS2: Each channel performs control code detection on the received 8bit data;

[0119] Ste...

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Abstract

The invention discloses a device and method for mutual conversion of 8B / 10B encoding and 64B / 66B encoding, including an 8-to-64 module and a 64-to-8 module. For the 8-to-64 module: after decoding the data received by 8 channels, it is obtained 8 sets of 8bit data are encapsulated into a set of 64bit data, and then the 64bit data is encoded in 64B / 66B for high-speed transmission to realize 8B / 10B encoding to 64B / 66B encoding; for 64 to 8 modules: decode the data received from the sender Restore to 8 sets of 8bit data corresponding to the channel, and then perform 8B / 10B encoding before transmission, realizing 64B / 66B encoding to 8B / 10B encoding. The invention greatly reduces the consumption of optical fiber and the laying cost of optical fiber, and can increase the data transmission rate of PON port from 1.25Gbps to 10Gbps through 64B / 66B encoding, greatly increasing the speed of long-distance transmission.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a device and method for interconverting 8B / 10B encoding and 64B / 66B encoding. Background technique [0002] Today, with the rapid development of network communication, the requirements for signal rate and quality are getting higher and higher. Network communication generally adopts high-speed serial transmission mode. It is necessary to encode the signal so that there is enough intensive level conversion on the signal to ensure the correct transmission of the signal. Among them, the gigabit rate is the most widely used 8B10B encoding technology, which is used for serial SCSI, Serial ATA, Fiber Link, Gigabit Ethernet, PCIExpress bus, etc. With the increasing demand for bandwidth, in order to reduce the encoding overhead and hardware complexity, the IEEE 802.3 working group proposed 64B / 66B encoding technology for 10G Ethernet, which is mainly used in Fiber Channel 10GFC and 16GF...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04L1/00
CPCH04L1/0009H04Q11/0067
Inventor 麦海翔徐培根
Owner 广州芯德通信科技股份有限公司
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