CN105792031B - A kind of method that GMP mapping generates Cn value in OTN - Google Patents
A kind of method that GMP mapping generates Cn value in OTN Download PDFInfo
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- CN105792031B CN105792031B CN201610128728.1A CN201610128728A CN105792031B CN 105792031 B CN105792031 B CN 105792031B CN 201610128728 A CN201610128728 A CN 201610128728A CN 105792031 B CN105792031 B CN 105792031B
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- 238000013507 mapping Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001914 filtration Methods 0.000 claims description 15
- 230000007774 longterm Effects 0.000 claims description 4
- 230000001186 cumulative effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 3
- 230000003287 optical effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- H04Q11/0005—Switch and router aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
-
- 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
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
-
- 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
- H04Q2011/0075—Wavelength grouping or hierarchical aspects
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
- Complex Calculations (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Optical Communication System (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
A kind of method that GMP mapping generates Cn value in OTN, is related to the communications field, comprising: within each period, counts the rate information statistical value of opposite end and local low order ODU signal respectively；Since second period, each period generates a difference value；The difference value in each period and the filter result in last period are made the difference, filtered difference is obtained；Filtered difference is amplified to pre-configured filter factor times, is adjusted value；The adjusted value in each period and the adjusted value in period before are added up, integrated value is obtained；When the integrated value of a cycle is greater than 255, filter value 1, Cn value+filter value of the Cn value in the period=nominal；Otherwise, filter value 0, the Cn value of the Cn value in the period=nominal.The present invention is small to circuit consumption resource, and circuit structure will not be changed because mapping object changes, and reduces the jitter of Cn value.
Description
Technical field
The present invention relates to the communications fields, and in particular to a kind of method that GMP mapping generates Cn value in OTN.
Background technique
OTN (Optical Transport Network, optical transfer network) technology is gradually becoming optical communication field in recent years
One of mainstream technology, in OTN business, by low order ODU (Optical channel Data Unit, optical network data list
Member) it is mapped into the technology that high-order ODU is more key.
Currently, the method that GMP (Generic Mapping Procedure, common mapping rules) mapping generates Cn value, greatly
Majority is all the waterline position by data path FIFO (First Input First Output, First Input First Output) controller
It sets, judgement provides rough Cn (counting of number of n-bit client data entities, n- bit customer data)
Value.With the appearance of new client signal, the adjusting range of GMP mapping, that is, the speed difference of client signal and server signal
It is different, it will be increasing.GMP mapping generates the Cn value that precision reaches a byte, and the specification quantity of required FIFO is increasing, right
The resource consumption of circuit is increasing, and mapping object changes circuit structure and has large variation, therefore the Cn value generated can not
Avoid very big shake.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide GMP mappings in a kind of OTN to generate Cn value
Method, the precision of Cn value in a byte, to circuit consumption resource it is small, circuit structure will not because mapping object change and
It changes, reduces the jitter of Cn value.
To achieve the above objectives, the present invention takes a kind of method that GMP mapping generates Cn value in OTN, comprising steps of S1.
Within each period, the rate information statistical value of opposite end low order ODU signal is counted respectively, and local low order ODU signal
Rate information statistical value；Since second period, each period generates a difference value, and the difference value is upper a cycle
In, the rate information statistical value of local low order ODU signal subtracts the difference of the rate information statistical value of opposite end low order ODU signal；S2.
Low-pass filtering treatment is carried out to the difference value in each period, that is, from the third period, by the difference value in each period and upper one
The filter result in a period makes the difference, and obtains filtered difference；Filtered difference is amplified to pre-configured filter factor times, is obtained
Adjusted value；The adjusted value in each period and the adjusted value in period before are added up, integrated value is obtained；When the integral of a cycle
When value is greater than 255, filter value 1, otherwise, filter value 0；S3. when the filter value of a cycle is 1, the Cn value in the period
=nominal Cn value+filter value；When the filter value of a cycle is 0, the Cn value of the Cn value in the period=nominal.
Based on the above technical solution, each period is the time identical fixed cycle, the fixed cycle
Length depends on the rate information of the high-order ODU of GMP mapping.
Based on the above technical solution, the rate information of the opposite end low order ODU signal and local low order ODU signal
Rate information contrast standard it is consistent.
Based on the above technical solution, in the S2, the cumulative of adjusted value is realized by an integrating circuit, is obtained
Integrated value.
Based on the above technical solution, in the S2, the adjusted value of a cycle is 0.
Based on the above technical solution, in the S2, the determination of filter value is realized by a decision circuit, judgement
Circuit is for determining whether the integrated value in each period is greater than 255.
Based on the above technical solution, in the S2, pre-configured filter factor range is 1~255, filtering
When coefficient is lower, filter result is more smooth；When filter factor is higher, filter tracking speed is faster.
Based on the above technical solution, the OTN is started power up or when service switchover, configures high filter factor；Institute
When stating OTN long-term follow, with setting low filter factor.
The beneficial effects of the present invention are: first obtain the rate information statistical value and opposite end low order of local low order ODU signal
Difference value between the rate information statistical value of ODU signal, then carries out low-pass filtering treatment, due to being the letter for difference value
It number is smoothed, total amount of data will not change, and reduce the jitter of Cn value.Meanwhile Cn value is obtained based on algorithm, for difference
The algorithm of different value has simplified entire operation, makes the precision of Cn value in a byte, small to circuit consumption resource, and circuit structure is not
It can be changed because mapping object changes.
Detailed description of the invention
Fig. 1 is the method flow diagram that GMP mapping generates Cn value in OTN of the present invention；
Fig. 2 is the schematic diagram of low-pass filtering treatment of the embodiment of the present invention.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments.
As shown in Figure 1, the method that GMP mapping generates Cn value in OTN of the present invention, includes the following steps:
S1. within each period, the rate information value of opposite end low order ODU signal is extracted, meanwhile, in locally generated standard
Low order ODU signal rate information value.Also, within each period, the rate letter of opposite end low order ODU signal is counted respectively
Cease statistical value, and the rate information statistical value of local low order ODU signal.Since second period, each period generates one
A difference value, the difference value refer in a cycle that it is low that the rate information statistical value of local low order ODU signal subtracts opposite end
The difference of the rate information statistical value of rank ODU signal.That is, the difference value of a cycle, is generated in second period
, and a cycle does not generate difference value.
Specifically, each period is the time identical fixed cycle, the length of fixed cycle depends on the height of GMP mapping
The rate information of rank ODU, specifically, according to agreement G.709 content, for high-order ODU, for example, ODU4 and ODU5, the two
Correspond to the different periods in the protocol respectively.The speed of the rate information of the opposite end low order ODU signal and local low order ODU signal
The contrast standard of rate information is consistent, in order to really reflect local low order ODU signal and opposite end low order ODU signal in fixation
Rate difference in time cycle.Within identical system time, opposite end low order ODU signal and local low order ODU signal are passed
Defeated amount of bytes information thus meets opposite end and local since system time is all consistent local and opposite end
Measurement mechanism is consistent.
S2. as shown in Fig. 2, the difference value to each period carries out low-pass filtering treatment.That is, from the third period, it will
The difference value X [n] that each period generates, makes the difference with the filter result Y [n] of upper a cycle, obtains filtered difference.
By the filtered difference in each period, it is amplified to pre-configured filter factor times, is adjusted value, in Fig. 2
Coeff is filter factor, and Adj indicates the adjustment for being amplified to pre-configured filter factor times.Wherein, pre-configured filter
Wave coefficient range is 1~255, and filter factor is lower closer to 1 representative, and with postponing, it is more flat that filtering performance is embodied in filter result
It is sliding；Filter factor is higher closer to 255 representatives, and with postponing, it is faster that filtering performance is embodied in filter tracking speed.Different filtering
Coefficient can satisfy the filtering of different condition, when OTN is started power up or when service switchover, needs quickly to adjust, configure high filtering
The Cn value fluctuation of coefficient, generation is relatively large；It when OTN long-term follow, needs using steady adjustment modes, is with filtering is set low
Number, the Cn value of generation is relatively steady, and it is obtained in the long-term follow that Cn value is obtained in the present embodiment.
The adjusted value in each period and the adjusted value in period before are added up, integrated value is obtained.Wherein, pass through a product
Parallel circuit sum carrys out the cumulative of statistical adjustment value, and the adjusted value of a cycle is 0.
Then the determination of filter value is realized by a decision circuit quantizer, decision circuit is according to integrating circuit
Result provide decision value, for determining whether the integrated value in each period is greater than 255, which is exactly this periodical filtering
Filter value.Specifically, when the integrated value of a cycle is greater than 255, filter value 1, otherwise, filter value 0.
S3. from second round, the Cn value in each period is generated according to filter value, specifically, working as the filter of a cycle
When wave number is 1, Cn value+filter value of the Cn value in the period=nominal；When the filter value of a cycle is 0, the Cn in the period
Value=nominal Cn value.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (8)
1. a kind of method that GMP mapping generates Cn value in OTN, which is characterized in that comprising steps of
S1. within each period, the rate information statistical value of opposite end low order ODU signal, and local low order ODU are counted respectively
The rate information statistical value of signal；Since second period, each period generates a difference value, and the difference value is upper one
In a period, the rate information statistical value of local low order ODU signal subtracts the rate information statistical value of opposite end low order ODU signal
Difference；
S2. low-pass filtering treatment is carried out to the difference value in each period, that is, from the third period, by the difference in each period
The filter result of value and upper a cycle makes the difference, and obtains filtered difference；Filtered difference is amplified to pre-configured filtering system
Several times are adjusted value；The adjusted value in each period and the adjusted value in period before are added up, integrated value is obtained；When one
When the integrated value in period is greater than 255, filter value 1, otherwise, filter value 0；
S3. when the filter value of a cycle is 1, Cn value+filter value of the Cn value in the period=nominal；When the filter of a cycle
When wave number is 0, the Cn value of the Cn value in the period=nominal.
2. the method that GMP mapping generates Cn value in OTN as described in claim 1, it is characterised in that: each period is
Time identical fixed cycle, the length of fixed cycle depend on the rate information of the high-order ODU of GMP mapping.
3. the method that GMP mapping generates Cn value in OTN as claimed in claim 2, it is characterised in that: the opposite end low order ODU
The rate information of signal is consistent with the contrast standard of rate information of local low order ODU signal.
4. the method that GMP mapping generates Cn value in OTN as described in claim 1, it is characterised in that: in the S2, pass through one
A integrating circuit realizes the cumulative of adjusted value, obtains integrated value.
5. the method that GMP mapping generates Cn value in OTN as claimed in claim 4, it is characterised in that: in the S2, first
The adjusted value in period is 0.
6. the method that GMP mapping generates Cn value in OTN as described in claim 1, it is characterised in that: in the S2, filter value
Determination realize that decision circuit is for determining whether the integrated value in each period is greater than 255 by decision circuit.
7. the method that GMP mapping generates Cn value in OTN as described in claim 1, it is characterised in that: in the S2, match in advance
The filter factor range set is 1~255, and when filter factor is lower, filter result is more smooth；When filter factor is higher, filtering
Tracking velocity is faster.
8. the method that GMP mapping generates Cn value in OTN as claimed in claim 7, it is characterised in that: the OTN is started power up
Or when service switchover, high filter factor is configured；When the OTN long-term follow, with setting low filter factor.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610128728.1A CN105792031B (en) | 2016-03-08 | 2016-03-08 | A kind of method that GMP mapping generates Cn value in OTN |
| RU2018113532A RU2687273C1 (en) | 2016-03-08 | 2016-10-21 | Method of generating a value of cn by displaying gmp settings in an optical transport network otn |
| SG11201804254VA SG11201804254VA (en) | 2016-03-08 | 2016-10-21 | Method for generating cn value by gmp mapping in otn |
| MYPI2018701246A MY194963A (en) | 2016-03-08 | 2016-10-21 | Method for generating cn value by gmp mapping in otn |
| PCT/CN2016/102814 WO2017152626A1 (en) | 2016-03-08 | 2016-10-21 | Method for generating cn value by gmp mapping in otn |
| CL2018001188A CL2018001188A1 (en) | 2016-03-08 | 2018-05-02 | Method to generate cn value by mapping type pmg in rto |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610128728.1A CN105792031B (en) | 2016-03-08 | 2016-03-08 | A kind of method that GMP mapping generates Cn value in OTN |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105792031A CN105792031A (en) | 2016-07-20 |
| CN105792031B true CN105792031B (en) | 2019-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610128728.1A Active CN105792031B (en) | 2016-03-08 | 2016-03-08 | A kind of method that GMP mapping generates Cn value in OTN |
Country Status (6)
| Country | Link |
|---|---|
| CN (1) | CN105792031B (en) |
| CL (1) | CL2018001188A1 (en) |
| MY (1) | MY194963A (en) |
| RU (1) | RU2687273C1 (en) |
| SG (1) | SG11201804254VA (en) |
| WO (1) | WO2017152626A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105792031B (en) * | 2016-03-08 | 2019-01-11 | 烽火通信科技股份有限公司 | A kind of method that GMP mapping generates Cn value in OTN |
| CN109450585B (en) * | 2018-09-21 | 2020-01-21 | 烽火通信科技股份有限公司 | Low-delay GMP mapping method and system based on state machine self-adaptive control |
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| KR100631514B1 (en) * | 2004-12-16 | 2006-10-09 | 엘지전자 주식회사 | Method for controlling transport rate of real-time streaming service |
| US8504377B2 (en) * | 2007-11-21 | 2013-08-06 | Lg Electronics Inc. | Method and an apparatus for processing a signal using length-adjusted window |
| CN101615967B (en) * | 2008-06-26 | 2011-04-20 | 华为技术有限公司 | Method, device and system for transmitting and receiving service data |
| JP5347792B2 (en) * | 2009-07-16 | 2013-11-20 | ソニー株式会社 | Signal processing apparatus, signal processing method, and reception system |
| CN103825668B (en) * | 2009-12-24 | 2017-06-16 | 华为技术有限公司 | General mapping code GMP mapping methods, de-mapping method and device |
| JP5498290B2 (en) * | 2010-07-16 | 2014-05-21 | 富士通株式会社 | Frame signal generation method and apparatus |
| CN102761792B (en) * | 2011-04-27 | 2015-09-16 | 中兴通讯股份有限公司 | GMP mapping device and method in a kind of OTN |
| JP5736962B2 (en) * | 2011-05-26 | 2015-06-17 | 富士通株式会社 | Transmission apparatus and frequency fluctuation compensation method |
| JP6020235B2 (en) * | 2013-02-14 | 2016-11-02 | 富士通株式会社 | Transmission method, transmission apparatus, and transmission system |
| CN105792031B (en) * | 2016-03-08 | 2019-01-11 | 烽火通信科技股份有限公司 | A kind of method that GMP mapping generates Cn value in OTN |
-
2016
- 2016-03-08 CN CN201610128728.1A patent/CN105792031B/en active Active
- 2016-10-21 SG SG11201804254VA patent/SG11201804254VA/en unknown
- 2016-10-21 MY MYPI2018701246A patent/MY194963A/en unknown
- 2016-10-21 WO PCT/CN2016/102814 patent/WO2017152626A1/en active Application Filing
- 2016-10-21 RU RU2018113532A patent/RU2687273C1/en active
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2018
- 2018-05-02 CL CL2018001188A patent/CL2018001188A1/en unknown
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| EP2680469A1 (en) * | 2009-12-24 | 2014-01-01 | Huawei Technologies Co., Ltd. | Method and apparatus for generic mapping procedure (GMP) mapping and demapping |
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Also Published As
| Publication number | Publication date |
|---|---|
| SG11201804254VA (en) | 2018-06-28 |
| MY194963A (en) | 2022-12-28 |
| CN105792031A (en) | 2016-07-20 |
| WO2017152626A1 (en) | 2017-09-14 |
| CL2018001188A1 (en) | 2018-09-28 |
| RU2687273C1 (en) | 2019-05-13 |
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