CN207732774U - A kind of network data transmission structure based on OTN - Google Patents

Abstract

The utility model provides a kind of network data transmission structure based on OTN, and includes：Exchange chip, for receiving or sending network data；Network data processing device connects the exchange chip, and for handling network data；At least two OTN processing chips, each OTN processing chips are all connected with the network data processing device；Optical interface connects each OTN processing chips, and connects OTN circuits and carry out data transmission；And at least one field programmable gate array, each field programmable gate array connect two adjacent OTN processing chips, and for managing the expense in OTN transmission.The beneficial effects of the utility model are：The network data transmission structure based on OTN substitutes the data transmission that SDH is encapsulated in realization large capacity in WDM transmission line using the transmission mode of OTN, since OTN embeds standard FEC, have complete maintenance management overhead functions in photosphere and electric layer, is more suitable for the carrying and scheduling of services of large granularities.

Description

A kind of network data transmission structure based on OTN

Technical field

The utility model is related to data transmissions and processing technology field, and in particular to a kind of network data biography based on OTN Defeated structure.

Background technology

Current existing data platform system, mostly uses SDH transmission modes, this transmission mode has the advantages that notable：

1, the network interface with standard simplifies signal intercommunication and signal transmission, multiplexing, interconnection and exchanged Journey；

2, abundant overhead byte defined in SDH frame structures, provides convenience for maintenance and management.When breaking down Can failure judgement property and position in time, reduce maintenance cost；

3, there are perfect pointer regulation mechanism and loop management function, complete self-healed protection ring can be formed.Somewhere When failure, intelligentized network element, which can be quickly found, substitutes route recovery business.

But this mode also has deficiency simultaneously：

1, it is transmitted using set form, causes bulky grain Packet Service packaging efficiency low；

2, using single channel circuit, capacity increases and scheduling granular size is restricted, and cannot be satisfied the fast of Packet Service Speed increases；

3, management function is weak in transmission process；

4, networking capability is weak, and using point-to-point connection type, network protection mode is not perfect；

5, network layer is more, funtion part overlapping.

Utility model content

The network data transmission structure based on OTN that the purpose of this utility model is to provide a kind of.

The technical solution of the utility model is as follows：A kind of network data transmission structure based on OTN includes：Exchange chip, For receiving or sending network data；Network data processing device connects the exchange chip, and is used for network data Reason；At least two OTN processing chips, each OTN processing chips are all connected with the network data processing device；Optical interface, even Each OTN processing chips are connect, and connects OTN circuits and carries out data transmission；And at least one field programmable gate array, often One field programmable gate array connects two adjacent OTN processing chips, and for managing the expense in OTN transmission.

The beneficial effects of the utility model are：

First, the network data transmission structure based on OTN substitutes SDH using the transmission mode of OTN and is encapsulated in WDM biographies Realize that the data transmission of large capacity has complete maintenance management since OTN embeds standard FEC in photosphere and electric layer in defeated line Overhead functions are more suitable for the carrying and scheduling of services of large granularities；

In addition, the network data transmission structure based on OTN has following advantage：

With robustness same as SDH, there are complete transparent transmission ability, including SDH expenses and timing for SDH signals；

It supports services of large granularities, disclosure satisfy that the volatile increased requirement of data bandwidth；

Support flexible network scheduling ability and networking protective capability；

Have the function of powerful FEC, is effectively protected circuit conveying function；

Network layer is reduced, operator's cost is reduced；

Powerful network operation management function is realized with abundant electric layer expense and photosphere expense, and expense is in payload Shared ratio is very low, and the maintenance management function that expense provides is also very strong (being compared with SDH frames)；

Pass through frame alignment, failure and error detection, connecting detection, payload type detection, maintenance signal and communication channel etc. Various ways realize maintenance management function, prevent user's mistake from connecting signal.

Description of the drawings

Fig. 1 is the structural schematic diagram for the network data transmission structure based on OTN that the utility model embodiment provides.

Specific implementation mode

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

The description of specific distinct unless the context otherwise, element and component in the utility model, quantity both can be single Form exist, form that can also be multiple exists, and the utility model is defined not to this.It is appreciated that institute herein The term "and/or" used one of is related to and covers associated Listed Items or one or more of any and all possibility Combination.

Referring to Fig. 1, the network data transmission structure based on OTN includes：Exchange chip 10, network data processing device 20, two OTN processing chips, 30, field programmable gate arrays (FPGA) 40 and optical interface 50.

Wherein, the exchange chip 10 connects institute for receiving or sending network data, the network data processing device 20 Exchange chip 10 is stated, and for handling network data；Each OTN processing chips 30 are all connected with the network data Processor 20, receives and processes the network data that the network data processing device 20 is sent, or to the network data Processor 20 sends processed network data；Two OTN processing chips 30 that the field programmable gate array 40 connects, and For managing the expense in OTN transmission；The optical interface 50 connects each OTN processing chips 30, and by OTN circuits into Row data transmission.

In some other alternate embodiment, the network data transmission structure based on OTN can also include three or At least four OTN processing chips 30 and two or at least three field programmable gate arrays 40, each scene Programmable gate array 40 connects two adjacent OTN processing chips 30, and for managing the expense in OTN transmission.

It should be noted that currently, common OTN overhead managements generally use the functions such as transparent transmission that chip interior carries, But such mode underaction cannot be configured freely in the case where client needs to have particular/special requirement to overhead management.

In the present embodiment, a large amount of expenses in OTN transmission are managed using field programmable gate array 40, so that Transparent transmission, management, intersection and the regeneration of expense can be realized according to customer demand.

Specifically, OTN expenses transparent transmission, that is, field programmable gate array 40, which does not do the overhead byte in link signal, locates Reason；

The overhead management of OTN can be examined by some basic maintenance management functions such as frame alignment, failure and error detection, connection It surveys, payload type detection, maintenance signal and communication channel etc. realize that field programmable gate array 40 can be by intercepting such open Byte in pin is come the case where judging present data transmission, if having whether loss, configuration connection correct, channel whether can be normal Transmission data etc., to judge link state and adjust in time；

The expense intersection of OTN, which can be realized, cuts the overhead management information of a link by field programmable gate array 40 It takes, is transferred to any other link in veneer；

The regeneration of OTN signals can be realized is converted to OTN formats by the data of ether format by OTN processing chips 30 Data transmission, overhead management byte is artificially added in the data by field programmable gate array 40 to the OTN formats.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this practicality is new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing in the equivalent requirements of the claims will be fallen All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation Involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiment being appreciated that.

Claims (1)

1. a kind of network data transmission structure based on OTN, which is characterized in that including：

Exchange chip, for receiving or sending network data；

Network data processing device connects the exchange chip, and for handling network data；

At least two OTN processing chips, each OTN processing chips are all connected with the network data processing device；

Optical interface connects each OTN processing chips, and connects OTN circuits and carry out data transmission；And

At least one field programmable gate array, each field programmable gate array connect adjacent two OTN processing cores Piece, and for managing the expense in OTN transmission.