MLD interface adapting method and system of optical transport network

A technology of interface adaptation and optical transport network, applied in the field of optical network communication, can solve problems such as dislocation, failure to restore original data, and delay deviation of logical channels

Active Publication Date: 2016-07-27
FENGHUO COMM SCI & TECH CO LTD
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  • Abstract
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Problems solved by technology

[0008] The technical problem to be solved by the present invention is that there are dislocations and delays in the transmission process of data in different wavelengths and lines, resulting in delay deviations between logical channels, and the problem that the original data cannot be restored when the data is received

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  • MLD interface adapting method and system of optical transport network
  • MLD interface adapting method and system of optical transport network
  • MLD interface adapting method and system of optical transport network

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Embodiment Construction

[0054] The present invention provides an optical transport network MLD interface adaptation system, and the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0055] like figure 2 As shown, the block diagram of the MLD interface adaptation system provided by the present invention includes bit_demux module 10, 11_align module 20, 11m_recovery module 30, deskew_pro module 40, and 11_mux module 50; wherein:

[0056] bit_demux module 10: used to demultiplex the physical channel data bits to the logical channel according to the bit polling method; for the OTL4.10 data interface, distribute 1 physical channel data to 2 logical channels every 2 bits, the logical channel The rate of the original physical channel is one-half of the original physical channel; for the OTL4.4 data interface, 1 physical channel data is distributed to 5 logical channels every 5 bits, and the rate of the logical channel is one-fifth of the...

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Abstract

The invention discloses an MLD (Multiple Lane Distribution) interface adapting method and system of an optical transport network. The system includes a bit_demux module demultiplexing physical lanes to logical lanes; an ll_align module obtaining FP through implementing detection of frame positioning bytes of the logical lanes, and outputting channel data and alarm signals after frame synchronization, wherein the frame synchronization is implemented by a standard frame synchronization state machine; an llm_recovery module implementing recovery and ranking of logical channel numbers, wherein the recovery process is implemented by a standard recovery state machine; a deskew_pro module composed of a deskew_ctrl sub module and a correction FIFO sub module and performing delayed alignment treatment of the logical channels according to the FP; and an ll_mux module implementing data frame re-organization after data alignment in the logical channels. According to the invention, read operation of a lane correction FIFO is controlled according to the extracted and recovered FP and logical lane number, so that a problem of multiple lane data delayed correction in 100G MLC interface transmission is solved.

Description

technical field [0001] The present invention relates to the technical field of optical network communication, in particular to a method and system for adapting an MLD interface of an optical transport network. Background technique [0002] With the implementation of the "Broadband China Optical Network City" plan and the strong drive of new bandwidth applications such as mobile Internet, Internet of Things and cloud computing, there is an urgent need for higher capacity transmission networks. The explosive growth of packet traffic brought about by cloud services, home broadband and wireless backhaul is driving a new round of investment by operators to expand optical transport networks to support 100G network transmission. [0003] Multi-channel distribution (MLD) is the core mechanism of 100G technology implementation. MLD is based on inverse multiplexing technology, which divides high-speed signals into several low-speed signals at the sending end for multi-channel parallel...

Claims

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Application Information

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IPC IPC(8): H04B10/25
CPCH04B10/2589
Inventor 魏明
Owner FENGHUO COMM SCI & TECH CO LTD
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