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Optical transport network mld interface adaptation method and system

An optical transport network and interface adaptation technology, applied in the field of optical network communication, which can solve the problems of logical channel delay deviation, dislocation, and inability to restore original data.

Active Publication Date: 2018-11-30
FENGHUO COMM SCI & TECH CO LTD
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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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  • Optical transport network mld interface adaptation method and system
  • Optical transport network mld interface adaptation method and system
  • Optical transport network mld interface adaptation method and system

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Embodiment Construction

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

[0055] Such as figure 2 As shown, the block diagram of the MLD interface adaptation system provided by the present invention includes bit_demux module 10, ll_align module 20, llm_recovery module 30, deskew_pro module 40, and ll_mux module 50; wherein:

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

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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 invention relates to the technical field of optical network communication, in particular to an optical transport network MLD interface adaptation method and system. 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 transmission networks to have higher capacity. 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. 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 transmission, and each c...

Claims

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Application Information

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