CN109640198A - A kind of method and apparatus improving OTN bandwidth availability ratio - Google Patents
A kind of method and apparatus improving OTN bandwidth availability ratio Download PDFInfo
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- CN109640198A CN109640198A CN201811569482.7A CN201811569482A CN109640198A CN 109640198 A CN109640198 A CN 109640198A CN 201811569482 A CN201811569482 A CN 201811569482A CN 109640198 A CN109640198 A CN 109640198A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/27—Arrangements for networking
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0086—Network resource allocation, dimensioning or optimisation
Abstract
This application provides a kind of method and apparatus for improving OTN bandwidth availability ratio, this method comprises: when receiving n-th of client signal data, deposit caching；Determine currently available data field；The transmission of client signal data is carried out using common mapping rules GMP mapping mode based on currently available data field；And the fill area for using GMP mapping determining is denoted as to the available data field of (n+1)th client signal data.This method can be improved bandwidth availability ratio and efficiency of transmission.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of raising optical transfer network (OTN, Optical Transport
Network) the method and apparatus of bandwidth availability ratio.
Background technique
OTN technology can satisfy various new business demands, have transparent transmission, and expense is abundant, rigid tubing isolation, time delay
It is low, shake small etc. characteristic, to become the Main way of optical transfer network development, be transmit network technology development optimal selection it
One, it is contemplated that OTN technology will obtain broader applications, become operator and build that the excellent network platform, branch out city
The one preferred technique of field.
OTN provides relatively succinct transport protocol, is optimized for transmission net feature.OTN initial target is
It supports SDH signal of the signal rate on 2.48832Gbit/s (STM16), solves the problems, such as TDM business high capacity transmission, because
This defines the ODUk (k=1,2) of higher rate, this to design many aspects for significantly simplifying transmission net.Business at this time
Signal is mapped to the method that OTN often uses asynchronous mapping regular (AMP) or synchronization map (BMP).But with Packet Service
Fast development, OTN is when carrying Ethernet service, in place of Shortcomings.
The common interface of Ethernet is GE and 10GE, and for GE business, originally OTN can not match corresponding rate etc.
Grade, if GE business maps directly to OPU1, it will cause great bandwidth wastes.The line speed of 10GE business is
10.3125Gb/s, and the payload rates of the OPU2 of respective rate grade only have 9.995Gb/s.
For this purpose, OTN technology introduces the concept of ODU0, the rate of single ODU0 is the half of OPU1, i.e. 1.244160Gb/
S, and the payload rates of OPU0 are about 1.238954Gb/s, are still not enough to transparent transmission GE signal (1.25Gb/s), thus
OTN technology uses TTT (Timing Transparent Transcoding) technology, handles by TTT, GE signal rate is pressed
It is condensed to 1.178750Gb/s, this rate has been significantly less than the payload rates of OPU0, cannot reuse asynchronous mapping or synchronization
The method of mapping.In order to solve this problem, OTN defines a kind of new mapping mode i.e. common mapping rules (Generic
Mapping Procedure, GMP).GMP is a kind of flexibly and effectively mapping method, as long as client signal is within the allowable range,
Client signal can be mapped to corresponding OPUk in this way by container rate of the client rate less than OPUk, and GMP is logical
A data filling algorithm is crossed, client signal and filling data are evenly distributed in the container of OPUk.
By introducing ODU0 and GMP, OTN defines some signals such as STM1 (155.52M), STM4 (622.08M), FE
(125M), FC-100 (1.06G) etc. have been mapped to ODU0, the side that FC-200 (2.12G) passes through GMP by the method for GMP
Method is mapped to ODU1, and 1.5G SDI is mapped to ODU1 etc. by GMP, to increase the type of business of OTN carrying, expands
The application range of OTN technology.
OTN technology solves the problems, such as the carrying of a part of business by the new mapping method of introducing and new ODU particle,
But still do not defined explicitly there are many business, also It is not necessary to be that each new client signal defines a kind of fixation
ODU type, therefore the technical standard of OTN introduces ODUflex, client signal is first mapped to ODUflex, and then ODUflex exists
It is mapped to corresponding ODUk (k=0,1,2 ... ...) using GMP method, so that the rate adaptation mechanism of flexibility and changeability is provided,
Flexible configuration container capacity guarantees the efficient utilization of bandwidth, reduces the transmission cost of every bit, and its compatibility is strong, Ke Yishi
With video, storage, the various businesses type such as data.
OTN technology is currently the transmission technology of mainstream, by above-mentioned analysis, although we can be found that existing OTN skill
Art standard solves the problems, such as that various client traffics pass through the transmission of OTN, and the practical particle of OTN is still fixed, although
The introducing of ODU0 so that the smallest particles of OTN is reduced to ODU0 from ODU1, but only client signal rate close to ODUk (0,1,
2 ...) when, load-carrying efficiency is only relatively high.Although other rates can be carried by OTN, bandwidth availability ratio compares
Low, by taking STM1 as an example, efficiency only has about 12.6%, and a large amount of bandwidth is wasted.
Summary of the invention
In view of this, the application provides a kind of method and apparatus for improving OTN bandwidth availability ratio, bandwidth usage can be improved
Rate and efficiency of transmission.
In order to solve the above technical problems, the technical solution of the application is achieved in that
A method of optical transfer network OTN bandwidth availability ratio is improved, this method comprises:
When receiving n-th of client signal data, deposit caching；
Determine currently available data field；
The transmission of client signal data is carried out using common mapping rules GMP mapping mode based on currently available data field；
And the fill area for using GMP mapping determining is denoted as to the available data field of (n+1)th client signal data.
A kind of device improving optical transfer network OTN bandwidth availability ratio, which includes: receiving unit, cache unit, determination
Unit, processing unit and recording unit；
The receiving unit, for receiving client signal data；
The cache unit, n-th of client signal data for receiving the receiving unit, deposit caching；
The determination unit, for determining currently available data field；
The processing unit, for being carried out based on currently available data field using common mapping rules GMP mapping mode
Client signal data transmission in the cache unit；
The recording unit is denoted as (n+1)th client for the processing unit to be mapped determining fill area using GMP
The available data field of signal data.
As can be seen from the above technical solution, continue to transmit other client signal numbers by the position in filling in the application
According to transmit more client signal data in the same OTN container, and still being able to have all of OTN network
Advantage, while improving bandwidth availability ratio and transmission efficiency.
Detailed description of the invention
Fig. 1 is the flow diagram that OTN bandwidth availability ratio is improved in the embodiment of the present application one；
Fig. 2 is the flow diagram that OTN bandwidth availability ratio is improved in the embodiment of the present application two；
Fig. 3 is that data are evenly distributed in the schematic diagram in container in the embodiment of the present application；
Fig. 4 is the apparatus structure schematic diagram for being applied to above-mentioned technology in the embodiment of the present application.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and examples,
Technical solution of the present invention is described in detail.
A kind of method improving OTN bandwidth availability ratio is provided in the embodiment of the present application, by the position of filling after resuming
Other defeated client signal data, to transmit more client signal data in the same OTN container, and still are able to have
All advantages of standby OTN network, while improving bandwidth availability ratio and transmission efficiency.
With reference to the accompanying drawing, the process realized in the embodiment of the present application and improve OTN bandwidth availability ratio is described in detail.
It is improved in the embodiment of the present application to be how transmitting terminal sends client signal data, as the processing of receiving end, root
It is handled according to existing realization.
Embodiment one
It is the flow diagram that OTN bandwidth availability ratio is improved in the embodiment of the present application one referring to Fig. 1, Fig. 1.
Specific steps are as follows:
Step 101, when receiving n-th of client signal data, deposit caching.
N is the integer greater than 0.
Step 102, currently available data field is determined.
If n be 1, a frame to all databases be currently available data field；
It is currently may be used for the available data field recorded after (n-1)th client signal data transmission if n is greater than 1
Data field, that is, it is determined as currently available data field for the fill area of (n-1)th client signal data；
If there is the data field of release, it can also be registered as available data field, that is to say, that current markers are available
Data field be available data field.
The frame structure of construction transmission client signal data.
Step 103, the transmission of client signal data is carried out using GMP mapping mode based on currently available data field.
The process of client signal data transmission is carried out compared with realization, institute using GMP mapping mode in the embodiment of the present application
The difference is that being carried out data transmission only in bandwidth provided by a signal using GMP mapping mode when existing realization；
As long as and bandwidth allows in the embodiment of the present application, can be mapped in corresponding bandwidth using GMP for multiple signals
Mode carries out data transmission, and subsequently received signal uses the fill area determined for previous client signal data
Domain.
Step 104, the fill area for using GMP mapping determining is denoted as to the available data of (n+1)th client signal data
Area.
In the embodiment of the present application, data from start to finish are transmitted using the mode of GMP mapping.
Embodiment two
Referring to fig. 2, Fig. 2 is the flow diagram that OTN bandwidth availability ratio is improved in the embodiment of the present application two.
Specific steps are as follows:
Step 201, when receiving n-th of client signal data, deposit caching.
Step 202, currently available data field is determined.
If n be 1, a frame to all databases be currently available data field；
It is currently may be used for the available data field recorded after (n-1)th client signal data transmission if n is greater than 1
Data field, that is, it is determined as currently available data field for the fill area of (n-1)th client signal data；
If there is the data field of release, it can also be registered as available data field, that is to say, that current markers are available
Data field be available data field.
Step 203, determine whether bandwidth corresponding to available data field is greater than preset threshold, if so, executing step
204；Otherwise, step 205 is executed.
Step 204, the transmission of client signal data is carried out using GMP mapping mode based on currently available data field, and will
The available data field that determining fill area is denoted as (n+1)th client signal data is mapped using GMP, terminates this process.
The process of client signal data transmission is carried out compared with realization, institute using GMP mapping mode in the embodiment of the present application
The difference is that being carried out data transmission only in bandwidth provided by a signal using GMP mapping mode when existing realization；
As long as and bandwidth allows in the embodiment of the present application, can be mapped in corresponding bandwidth using GMP for multiple signals
Mode carries out data transmission, and subsequently received signal uses the fill area determined for previous client signal data
Domain.
Step 205, the transmission of client signal data is carried out using AMP mapping mode.
In the embodiment of the present application, the mode for beginning to use GMP to map transmits data, the band corresponding to available data field
When width is not more than preset threshold, signal transmission is carried out using AMP mapping mode.
When for using GMP mapping mode to carry out the transmission of client signal data in embodiment one and embodiment two, by client
Signal data is evenly distributed in the determining client signal data filling band of position.
In specific implementation, data can be evenly distributed in container by Sigma-Delta data/filling algorithm,
The namely band of position of client signal data filling.
Referring to Fig. 3, Fig. 3 is that data are evenly distributed in the schematic diagram in container in the embodiment of the present application.
Assuming that passing through GMP mapping mode and Sigma-Delta data/filling algorithm for the 1st client signal data
Determine that the corresponding region of white box is the data field for filling client signal data, black box is for the 1st client
The fill area that signal data determines, is denoted as the available data area of the 2nd signal；
When the 2nd client signal data need to send, the currently available data field determined is the black side in Fig. 2
The corresponding region of lattice is based on the corresponding region of black box, carries out the second client signal transmission using GMP mapping mode, in this way
Transmission after processing for the second client signal data still can have some filling regions, that is, the corresponding portion of black box
Subregion, the available data area as the 3rd client signal data；
And so on, until k-th of client signal number that the currently available region of record cannot be currently received in transmission
According to；
Alternatively, the corresponding bandwidth in currently available region is not more than preset threshold, then when receiving client signal data, make
Carried out data transmission with AMP mapping mode.
Certain premise is all that the corresponding bandwidth in currently available data field can satisfy the client signal number currently to be transmitted
According to the size of required bandwidth；Otherwise, the client signal data being currently received cannot be transmitted.
When being directed to some client signal the data transfer ends in the embodiment of the present application, or no longer transmitting, bandwidth resources are released
It puts, can be used to the subsequent client signal data for needing to transmit, specifically:
When the transmission of any client signal end of data data, the data field of occupancy is discharged, as will connect next time
The available data field of the client signal data received.
After isolating client signal and filling data using OTN technology in receiving end in the embodiment of the present application, to filler
According to processing, lifts internal expense, its data and filling are isolated, to isolate client signal.To realize in OTN skill
In art, the target of additional client signal is transmitted using the filling data portion filled in, the utilization rate of bandwidth is improved, improves
The efficiency of transmission.
A kind of device improving OTN bandwidth availability ratio is also provided based on same inventive concept, in the embodiment of the present application.Ginseng
See that Fig. 4, Fig. 4 are the apparatus structure schematic diagram for being applied to above-mentioned technology in the embodiment of the present application.The device includes: receiving unit
401, cache unit 402, determination unit 403, processing unit 404 and recording unit 405；
Receiving unit 401, for receiving client signal data；
Cache unit 402, n-th of client signal data for receiving receiving unit 401, deposit caching；
Determination unit 403, for determining currently available data field；
Processing unit 404, for being carried out in cache unit 402 based on currently available data field using GMP mapping mode
Client signal data transmission；
Recording unit 405 is denoted as (n+1)th client's letter for processing unit 404 to be mapped determining fill area using GMP
The available data field of number.
Preferably,
The record unit, for when the transmission of any client signal end of data data, the data field of occupancy to be discharged, note
Available data field for the client signal data that will be received next time.
Preferably,
Determination unit 403 is further used for after determining currently available data field, determines corresponding to available data field
Bandwidth whether be greater than preset threshold, if so, triggering processing unit 404 mapped based on currently available data field using GMP
Mode carries out client signal data transmission；Otherwise, triggering processing unit 404 carries out client signal data using AMP mapping mode
Transmission.
Preferably,
Processing unit 404 is further used for when carrying out the transmission of client signal data using GMP mapping mode, by client
Signal data is evenly distributed in determining client signal data filling position.
The unit of above-described embodiment can integrate in one, can also be deployed separately；It can be merged into a unit, it can also
To be further split into multiple subelements.
In conclusion the application continues to transmit other client signal data by the position in filling, thus same
More client signal data are transmitted in OTN container, and still are able to all advantages for having OTN network, are improved simultaneously
Bandwidth availability ratio.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (8)
1. a kind of method for improving optical transfer network OTN bandwidth availability ratio, which is characterized in that this method comprises:
When receiving n-th of client signal data, deposit caching；
Determine currently available data field；
The transmission of client signal data is carried out using common mapping rules GMP mapping mode based on currently available data field；
And the fill area for using GMP mapping determining is denoted as to the available data field of (n+1)th client signal data.
2. the method according to claim 1, wherein the method further includes:
When the transmission of any client signal end of data data, the data field of occupancy is discharged, is recorded as to receive next time
The available data field of the client signal data arrived.
3. the method according to claim 1, wherein after the currently available data field of the determination, the base
Before currently available data field carries out the transmission of client signal data using GMP mapping mode, the method further includes:
Determine whether bandwidth corresponding to available data field is greater than preset threshold, if so, based on currently available data field
The transmission of client signal data is carried out using GMP mapping mode；Otherwise, client is carried out using asynchronous mapping rule AMP mapping mode
Signal data transmission.
4. method according to claim 1-3, which is characterized in that the method further includes:
When carrying out the transmission of client signal data using GMP mapping mode, client signal data are evenly distributed in determining visitor
Family signal data inserts position.
5. a kind of device for improving optical transfer network OTN bandwidth availability ratio, which is characterized in that the device includes: receiving unit, caching
Unit, determination unit, processing unit and recording unit；
The receiving unit, for receiving client signal data；
The cache unit, n-th of client signal data for receiving the receiving unit, deposit caching；
The determination unit, for determining currently available data field；
The processing unit, for being used described in the progress of common mapping rules GMP mapping mode based on currently available data field
Client signal data transmission in cache unit；
The recording unit is denoted as (n+1)th client signal for the processing unit to be mapped determining fill area using GMP
The available data field of data.
6. device according to claim 5, which is characterized in that
The record unit, for the data field of occupancy being discharged, is denoted as down when the transmission of any client signal end of data data
The available data field for the client signal data that will once receive.
7. device according to claim 5, which is characterized in that
The determination unit is further used for after determining currently available data field, determines corresponding to available data field
Whether bandwidth is greater than preset threshold, uses the mapping side GMP based on currently available data field if so, triggering the processing unit
Formula carries out the transmission of client signal data；Otherwise, it triggers the processing unit to use, asynchronous mapping rule AMP mapping mode carries out
The transmission of client signal data.
8. according to the described in any item devices of claim 5-7, which is characterized in that
The processing unit is further used for when carrying out the transmission of client signal data using GMP mapping mode, by client signal
Data are evenly distributed in determining client signal data filling position.
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| CN201811569482.7A CN109640198B (en) | 2018-12-21 | 2018-12-21 | Method and device for improving OTN bandwidth utilization rate |
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| CN201811569482.7A CN109640198B (en) | 2018-12-21 | 2018-12-21 | Method and device for improving OTN bandwidth utilization rate |
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