CN105323053B - The method and device of business clock transparent transmission - Google Patents
The method and device of business clock transparent transmission Download PDFInfo
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- CN105323053B CN105323053B CN201410282726.9A CN201410282726A CN105323053B CN 105323053 B CN105323053 B CN 105323053B CN 201410282726 A CN201410282726 A CN 201410282726A CN 105323053 B CN105323053 B CN 105323053B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
- H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit
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Abstract
The invention discloses a kind of method of business clock transparent transmission, the method for the business clock transparent transmission carries out over-sampling to the business datum, and obtain the quantity of the effective sampling points of the business datum the following steps are included: when needing to transmit there are business datum；According to the quantity of preset algorithm and the effective sampling points of acquisition, the corresponding characterize data of clock information of the business datum is calculated；The characterize data is sent to purpose equipment, so that the purpose equipment obtains the clock information of the business datum according to the characterize data.The invention also discloses a kind of devices of business clock transparent transmission.The present invention, which is realized, is accurate to Bit by the precision of transmission clock for time clock tracking after transparent transmission, reduce the shake after clock transparent transmission, the quality of clock after transparent transmission is improved, the clock after transparent transmission can directly meet application request, thereby reduce the synchronous cost of clock.
Description
Technical field
The present invention relates to technical field of photo communication more particularly to the method and devices of business clock transparent transmission.
Background technique
It needs to establish with the continuous development of optical communication technique, if many applications (such as 1588 agreements) same in the clock of the whole network
In step.Therefore, transmission device of today not only needs transmission services data itself in the transmission process for carrying out business datum,
It is also required to the clock information (needing to carry out business clock transparent transmission) of transmission characterization traffic data rate, can guarantee the whole network in this way
Business keeps clock synchronous.
Currently, in order to realize clock transparent transmission, can be mapped using related business in G.709 agreement in JC value, Cn (t),
Cm (t) and ∑ CnD (t) value.These values have reacted business from low order to high-order ODUK (Optical Channel Data
Unit, Optical Channel Data Unit-k) mapping in clock information, wherein the n in Cn (t) represents the precision of business clock transparent transmission,
And n is smaller, clock quality and precision are higher.The process of specific clock information transparent transmission are as follows: at mapping end, mapping block is according to industry
Business data generate these values, and are inserted into the overhead data of business；At demapping end, De-mapping module extracts these
It is worth, and the clock frequency of former business can be recovered by certain means, that is, has accomplished the clock transparent transmission of business.
But the scheme for how generating Cn (t) value is not G.709 provided, and for Low-rate traffic, such as STM1, existing skill
Art either utilizes (effective) counting of Valid or FIFO (First In First Out, first in, first out) water level to be only capable of
Cn (t) value of n=8 is enough obtained, this has been accurate to byte.The transmission clock shake gone out using this accuracy resumption is excessive,
Dedicated clock devices such as phaselocked loop must be added, filter is just able to satisfy actual application requirement after being handled.It improves
The synchronous cost of clock.
Above content is only used to facilitate the understanding of the technical scheme, and is not represented and is recognized that above content is existing skill
Art.
Summary of the invention
It is a primary object of the present invention to improve the precision of clock transparent transmission, and then reduce the synchronous cost of clock.
To achieve the above object, the method for a kind of business clock transparent transmission provided by the invention, the business clock transparent transmission
Method the following steps are included:
When needing to transmit there are business datum, over-sampling is carried out to the business datum, and obtain the business datum
Effective sampling points quantity；
According to the quantity of preset algorithm and the effective sampling points of acquisition, the clock information pair of the business datum is calculated
The characterize data answered；
The characterize data is sent to purpose equipment, for the purpose equipment obtained according to the characterize data it is described
The clock information of business datum.
Preferably, described the step of carrying out over-sampling to the business datum, includes:
The service rate of the business datum is obtained, and determines the multiple of over-sampling according to the service rate；
Over-sampling is carried out to the business datum according to determining over-sampling multiple.
Preferably, described that the characterize data is sent to purpose equipment, so that the purpose equipment is according to the characterization
Data obtain the step of clock information of the business datum and include:
The characterize data is added in the overhead data of the business datum；
The overhead data after the characterize data will be added and be sent to purpose equipment, so that the purpose equipment is according to addition
The overhead data of the characterize data obtains the clock information of the business datum.
Preferably, the step of quantity for obtaining the business datum effective sampling points includes:
It determines the corresponding ODU type of the business datum, and obtains the determining ODU type corresponding ODU frame period；
Obtain the quantity of the effective sampling points of the business datum in an ODU frame period.
Preferably, the characterize data includes the first data and the second data, and the method for the business clock transparent transmission is also wrapped
Include step:
The corresponding business datum of first data is sent to the purpose equipment；
The corresponding business datum of second data is obtained, the business datum that will acquire is corresponding with next frame business datum
The part of second data is sent to the purpose equipment after merging.
In addition, to achieve the above object, the present invention also provides a kind of device of business clock transparent transmission, the business clock is saturating
The device of biography includes:
Over-sampling module, for carrying out over-sampling to the business datum when needing to transmit there are business datum；
Obtain module, the quantity of the effective sampling points for obtaining the business datum；
The business number is calculated for the quantity according to preset algorithm and the effective sampling points of acquisition in computing module
According to the corresponding characterize data of clock information；
Sending and receiving module, for the characterize data to be sent to purpose equipment, so that the purpose equipment is according to the table
Sign data obtain the clock information of the business datum.
Preferably, the acquisition module, is also used to:
Obtain the service rate of the business datum；
The over-sampling module is also used to determine the multiple of over-sampling according to the service rate；It is adopted according to determining mistake
Sample multiple carries out over-sampling to the business datum.
Preferably, the device of the business clock transparent transmission further include: processing module,
The processing module, for the characterize data to be added in the overhead data of the business datum；
The sending and receiving module is also used to add the overhead data after the characterize data and is sent to purpose equipment, for
The purpose equipment obtains the clock information of the business datum according to the overhead data for adding the characterize data.
Preferably, the acquisition module, is also used to:
Determine the corresponding ODU type of the business datum；Obtain the determining ODU type corresponding ODU frame period；Obtain one
The quantity of the effective sampling points of the business datum in a ODU frame period.
Preferably, the device of the business clock transparent transmission further includes merging module,
The sending and receiving module is also used to the corresponding business datum of first data being sent to the purpose equipment；
The acquisition module is also used to obtain the corresponding business datum of second data；
The merging module, business datum for will acquire and the part of the second data corresponding in next frame business datum
The purpose equipment is sent to by sending and receiving module after merging.
The present invention obtains the Bit information of the business datum, and get described by carrying out over-sampling to business datum
The quantity of the effective sampling points of business datum obtains the business according to the quantity (being accurate to Bit) of the effective sampling points of acquisition
The characterize data is sent to purpose equipment by the characterize data of the corresponding clock information of data, to realize the business datum
Clock transparent transmission.It is realized by using over-sampling and the mode that is counted to effective sampling points after over-sampling clock transparent transmission is accurate
To Bit, the shake after clock transparent transmission is reduced, improves the precision of clock transparent transmission, the clock after transparent transmission can directly meet
Application request thereby reduces the synchronous cost of clock.
Detailed description of the invention
Fig. 1 is the flow diagram of the first embodiment of the method for business clock transparent transmission of the present invention；
Fig. 2 is the flow diagram of the second embodiment of the method for business clock transparent transmission of the present invention；
Fig. 3 is the functional block diagram of the first embodiment of the device of business clock transparent transmission of the present invention；
Fig. 4 is the functional block diagram of the second embodiment of the device of business clock transparent transmission of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of method of business clock transparent transmission.
Referring to Fig.1, Fig. 1 is the flow diagram of the first embodiment of the method for business clock transparent transmission of the present invention.
In one embodiment, the method for the business clock transparent transmission includes:
Step S10 carries out over-sampling to the business datum, and described in acquisition when needing to transmit there are business datum
The quantity of the effective sampling points of business datum；
The business datum includes low-speed service data and high speed business data, in the present embodiment preferably Low-rate traffic
Data.The main body for executing technical solution of the present invention can be the equipment in optical communication network, be also possible to control optical communication network
In business datum transmission control equipment etc..In the present embodiment be preferably optical communication network in equipment (the present invention with
Under description in using " equipment " as subsequent description).When needing to transmit there are business datum, i.e., in optical communication network,
According to business needs, when equipment needs to transmit there are business datum, over-sampling is carried out to the business datum, that is, is got described
Bit (bit) information of business datum, and obtain the quantity of the effective sampling points of the business datum, that is, get the business
The corresponding effective Bit information of data.The quantity of the effective sampling points of acquisition is G.709 in agreement for indicating the Cn of clock information
(t), and after over-sampling, n=1 in the Cn (t), i.e. clock information has been accurate to Bit.
The equipment is previously stored with the corresponding over-sampling mode of each service rate, that is, be previously stored with service rate with
The corresponding relationship of over-sampling multiple can be stored in the form of a list.The equipment adopted the business datum
The process of sample includes: to obtain the corresponding service rate of the business datum, and times of over-sampling is determined according to the service rate
Number carries out over-sampling to the business datum according to determining over-sampling multiple.For example, the multiple of over-sampling includes 4 times, 8 times
The modes such as over-sampling.The process that the equipment obtains the quantity of the effective sampling points of the business datum includes: that the equipment is true
Determine the corresponding ODU type of the business datum, and obtain the determining ODU type corresponding ODU frame period, obtains described in one
The quantity of the effective sampling points of the business datum in the ODU frame period.The ODU type includes ODU0, ODU1, ODU2 etc., root
The division of ODU type is carried out according to the rate difference of business datum.Specific sampling process can be the equipment for over-sampling
Business datum afterwards is input to logical internal, and the Bit of the business datum will appear repetition, for example, to the business datum
When taking 4 times of over-samplings, the case where adjacent Bit will appear sample error, this mistake can occur in the position that Bit is inverted,
Therefore, the business datum in the position of reversion is invalid.Reversion also includes the rate information of data Bit simultaneously, and reversion is got over
Illustrate that the rate of former serial data stream is faster fastly.So may determine that each bat over-sampling using reversion and pre-set exposure mask
Business datum in how many Bit be it is effective, the quantity of the effective sampling points of the business datum can be got.
Step S20, according to the quantity of preset algorithm and the effective sampling points of acquisition, be calculated the business datum when
The corresponding characterize data of clock information；
In the present embodiment, the equipment is carrying out over-sampling to the business datum, and obtains the business datum
When the quantity of effective sampling points, according to the quantity of preset algorithm and the effective sampling points of acquisition, the business datum is calculated
The corresponding characterize data of clock information.The preset algorithm is the quantity for the effective sampling points that will acquire divided by 8.The equipment
Handle the quantity of the effective sampling points of acquisition: the quantity for the effective sampling points that will acquire obtains quotient and the remainder divided by 8, institute
Stating quotient and the remainder is characterize data.The characterize data includes the first data and the second data, and in the present embodiment described first
Data are quotient, and second data are remainder.First data and second data are respectively when G.709 representing in agreement
The Cm (t) and ∑ CnD (t) of clock information.The i.e. described Cm (t) is the value of quotient, and the ∑ CnD (t) is the value of remainder.
The characterize data is sent to purpose equipment by step S30, so that the purpose equipment is according to the characterize data
Obtain the clock information of the business datum.
The equipment is in the corresponding characterize data of clock information that the business datum is calculated, by the characterization number
According to purpose equipment is sent to, so that the purpose equipment obtains the clock information of the business datum according to the characterize data.
For example, the Cm (t) and ∑ CnD (t) that represent clock information in G.709 agreement are sent to purpose equipment.The purpose equipment root
If including: the characterize data with Cm (t) and ∑ according to the process that the characterize data obtains the clock information of the business datum
For CnD (t), then the purpose equipment extracts Cm (t) value and ∑ CnD (t) value from received characterize data.According to formula
Cn (t) value is calculated in Cn (t)=8Cm (t)+∑ CnD (t), is carried out according to Valid based on Bit of the Cn (t) to ODU type
Frequency dividing obtains the clock for the business datum that accuracy is Bit.The clock transparent transmission for realizing the business datum, by institute
It is synchronous with the equipment to state purpose equipment clock.
Further, in order to preferably transmit the characterize data, the characterize data is added to institute by the equipment
It states in the overhead data of business datum；The overhead data after the characterize data will be added and be sent to purpose equipment, for described
Purpose equipment obtains the clock information of the business datum according to the overhead data for adding the characterize data.
The present embodiment obtains the Bit information of the business datum, and get institute by carrying out over-sampling to business datum
The quantity for stating the effective sampling points of business datum obtains the industry according to the quantity (being accurate to Bit) of the effective sampling points of acquisition
The characterize data of the corresponding clock information of data of being engaged in, is sent to purpose equipment for the characterize data, to realize the business number
According to clock transparent transmission.It realizes by using over-sampling and the mode that is counted to effective sampling points after over-sampling by clock transparent transmission essence
Bit is really arrived, the shake after clock transparent transmission is reduced, improves the precision of clock transparent transmission, the clock after transparent transmission can directly expire
Sufficient application request thereby reduces the synchronous cost of clock.
It is the flow diagram of the second embodiment of the method for business clock transparent transmission of the present invention referring to Fig. 2, Fig. 2.Based on upper
The first embodiment of the method for business clock transparent transmission is stated, the characterize data includes the first data and the second data, the business
The method of clock transparent transmission further comprises the steps of:
The corresponding business datum of first data is sent to the purpose equipment by step S40；
Step S50 obtains the corresponding business datum of second data, the business datum that will acquire and next frame business number
The purpose equipment is sent to after merging according to the part of middle the second data of correspondence.
In the present embodiment, on the data path in optical communication network, logical internal transmits the bit wide minimum 8 of data
Position (8bit), i.e. a byte.Institute is calculated in the quantity according to preset algorithm and the effective sampling points of acquisition in the equipment
When stating the corresponding characterize data of clock information of business datum, first data and described are got from the characterize data
Second data.In G.709 agreement, the characterize data is by taking Cm (t) and ∑ CnD (t) as an example, wherein first data are Cm
(t) value, second data are the value of ∑ CnD (t).The corresponding business datum of first data is the number of complete bytes
According to therefore, the equipment can be conveyed directly to the purpose equipment；And the corresponding business datum inadequate one of second data
A byte, the equipment can not be conveyed directly to the purpose equipment, and therefore, it is corresponding that the equipment obtains second data
Business datum, the business datum that will acquire are sent to described after merging with the part of the second data corresponding in next frame business datum
Purpose equipment.The i.e. described equipment obtains business datum corresponding with the second data in this current frame business datum, the industry that will acquire
Part corresponding with its (next frame business datum) second data is sent to institute after merging in business data and next frame business datum
State purpose equipment.If specific process may is that the still inadequate byte of the business datum after merging, by the industry after merging
Part corresponding with its second data merges and is transmitted again in business data and lower next frame business datum, i.e., until the second data
When corresponding business datum meets transmission requirement (for a complete bytes), the corresponding business datum of the second data of Fang Jiang is sent to institute
State purpose equipment；It, will this current frame business datum and next frame business number if the business datum after merging is greater than a byte
It forms a byte with this current frame business datum in be transmitted, extra part is next under in next frame business datum
Frame data are transmitted.For example, the second data of this current frame business datum are 4, the second data pair of current service data are represented
The business datum answered is 4Bit, and the second data of next frame business datum are 3, and it is corresponding to represent the second data of next frame business datum
Business datum be 3Bit, the two merge after be also only 7Bit, an inadequate byte needs and lower next frame business datum
The corresponding part of second data, which merges, to be transmitted, and is transmitted after gathering enough a byte (8Bit).For another example this current frame industry
Second data of data of being engaged in are 4, represent the corresponding business datum of the second data of current service data as 4Bit, next frame business number
According to the second data be 5, represent the corresponding business datum of the second data of next frame business datum as 5Bit, the two merges later
Only it is 9Bit, extracts preceding 4Bit data and this current frame data from the corresponding business datum of the second data of next frame business datum
4Bit data are sent to the purpose equipment after merging, and that remaining 1Bit data of next frame business datum are next under
Frame business datum merges.The purpose equipment gets the distribution of the business datum of transmitting according to the characterize data of transmitting
To obtain each complete frame business datum according to the distribution of the business datum of acquisition.In the present embodiment, by will not
The business datum that can directly transmit, which is incorporated into next frame data, is combined transmission, ensure that the completion of business datum, mentions
The high reliability of business transmitting.
The present invention further provides a kind of devices of business clock transparent transmission.
It is the functional block diagram of the first embodiment of the device of business clock transparent transmission of the present invention referring to Fig. 3, Fig. 3.
In one embodiment, the device of the business clock transparent transmission includes: over-sampling module 10, obtains module 20, is calculated
Module 30, sending and receiving module 40 and processing module 50.
The over-sampling module 10, for being adopted to the business datum when needing to transmit there are business datum
Sample；
The acquisition module 20, the quantity of the effective sampling points for obtaining the business datum；
The business datum includes low-speed service data and high speed business data, in the present embodiment preferably Low-rate traffic
Data.When needing to transmit there are business datum, i.e., in optical communication network, according to business needs, there are business datums for equipment
When needing to transmit, over-sampling is carried out to the business datum, that is, gets the Bit information of the business datum, and described in acquisition
The quantity of the effective sampling points of business datum gets the corresponding effective Bit information of the business datum.What is obtained effectively adopts
The quantity of sampling point is G.709 in agreement for indicating the Cn (t) of clock information, and the n=after over-sampling, in the Cn (t)
1, i.e. clock information has been accurate to Bit.
The equipment is previously stored with the corresponding over-sampling mode of each service rate, that is, be previously stored with service rate with
The corresponding relationship of over-sampling multiple can be stored in the form of a list.The equipment adopted the business datum
The process of sample includes: to obtain the corresponding service rate of the business datum, and times of over-sampling is determined according to the service rate
Number carries out over-sampling to the business datum according to determining over-sampling multiple.For example, the multiple of over-sampling includes 4 times, 8 times
The modes such as over-sampling.The process that the equipment obtains the quantity of the effective sampling points of the business datum includes: that the equipment is true
Determine the corresponding ODU type of the business datum, and obtain the determining ODU type corresponding ODU frame period, obtains described in one
The quantity of the effective sampling points of the business datum in the ODU frame period.The ODU type includes ODU0, ODU1, ODU2 etc., root
The division of ODU type is carried out according to the rate difference of business datum.Specific sampling process can be the equipment for over-sampling
Business datum afterwards is input to logical internal, and the Bit of the business datum will appear repetition, for example, to the business datum
When taking 4 times of over-samplings, the case where adjacent Bit will appear sample error, this mistake can occur in the position that Bit is inverted,
Therefore, the business datum in the position of reversion is invalid.Reversion also includes the rate information of data Bit simultaneously, and reversion is got over
Illustrate that the rate of former serial data stream is faster fastly.So may determine that each bat over-sampling using reversion and pre-set exposure mask
Business datum in how many Bit be it is effective, the quantity of the effective sampling points of the business datum can be got.
The computing module 30 is calculated described for the quantity according to preset algorithm and the effective sampling points of acquisition
The corresponding characterize data of the clock information of business datum；
In the present embodiment, the equipment is carrying out over-sampling to the business datum, and obtains the business datum
When the quantity of effective sampling points, according to the quantity of preset algorithm and the effective sampling points of acquisition, the business datum is calculated
The corresponding characterize data of clock information.The preset algorithm is the quantity for the effective sampling points that will acquire divided by 8.The equipment
Handle the quantity of the effective sampling points of acquisition: the quantity for the effective sampling points that will acquire obtains quotient and the remainder divided by 8, institute
Stating quotient and the remainder is characterize data.The characterize data includes the first data and the second data, and in the present embodiment described first
Data are quotient, and second data are remainder.First data and second data are respectively when G.709 representing in agreement
The Cm (t) and ∑ CnD (t) of clock information.The i.e. described Cm (t) is the value of quotient, and the ∑ CnD (t) is the value of remainder.
The sending and receiving module 40, for the characterize data to be sent to purpose equipment, for the purpose equipment according to
The characterize data obtains the clock information of the business datum.
The equipment is in the corresponding characterize data of clock information that the business datum is calculated, by the characterization number
According to purpose equipment is sent to, so that the purpose equipment obtains the clock information of the business datum according to the characterize data.
For example, the Cm (t) and ∑ CnD (t) that represent clock information in G.709 agreement are sent to purpose equipment.The purpose equipment root
If including: the characterize data with Cm (t) and ∑ according to the process that the characterize data obtains the clock information of the business datum
For CnD (t), then the purpose equipment extracts Cm (t) value and ∑ CnD (t) value from received characterize data.According to formula
Cn (t) value is calculated in Cn (t)=8Cm (t)+∑ CnD (t), is carried out according to Valid based on Bit of the Cn (t) to ODU type
Frequency dividing obtains the clock for the business datum that accuracy is Bit.The clock transparent transmission for realizing the business datum, by institute
It is synchronous with the equipment to state purpose equipment clock.
Further, in order to preferably transmit the characterize data, the processing module 50 is used for the characterization number
According to being added in the overhead data of the business datum；It the overhead data after the characterize data will be added is sent to purpose and set
It is standby, so that the purpose equipment obtains the clock information of the business datum according to the overhead data for adding the characterize data.
The present embodiment obtains the Bit information of the business datum, and get institute by carrying out over-sampling to business datum
The quantity for stating the effective sampling points of business datum obtains the industry according to the quantity (being accurate to Bit) of the effective sampling points of acquisition
The characterize data of the corresponding clock information of data of being engaged in, is sent to purpose equipment for the characterize data, to realize the business number
According to clock transparent transmission.It realizes by using over-sampling and the mode that is counted to effective sampling points after over-sampling by clock after transparent transmission
It follows and Bit is accurate to by the precision of transmission clock, reduce the shake after clock transparent transmission, improve the matter of clock after transparent transmission
It measures, the clock after transparent transmission can directly meet application request, thereby reduce the synchronous cost of clock.
It is the functional block diagram of the second embodiment of the device of business clock transparent transmission of the present invention referring to Fig. 4, Fig. 4.Institute
State the device of business clock transparent transmission further include: merging module 60.
The corresponding business datum of first data is also sent to the purpose equipment by the sending and receiving module 40；
The acquisition module 20 is also used to obtain the corresponding business datum of second data；
The merging module 60, business number for will acquire and the part of the second data corresponding in next frame business datum
The purpose equipment is sent to by sending and receiving module 40 after merging.
In the present embodiment, on the data path in optical communication network, logical internal transmits the bit wide minimum 8 of data
Position (8bit), i.e. a byte.Institute is calculated in the quantity according to preset algorithm and the effective sampling points of acquisition in the equipment
When stating the corresponding characterize data of clock information of business datum, first data and described are got from the characterize data
Second data.In G.709 agreement, the characterize data is by taking Cm (t) and ∑ CnD (t) as an example, wherein first data are Cm
(t) value, second data are the value of ∑ CnD (t).The corresponding business datum of first data is the number of complete bytes
According to therefore, the equipment can be conveyed directly to the purpose equipment；And the corresponding business datum inadequate one of second data
A byte, the equipment can not be conveyed directly to the purpose equipment, and therefore, it is corresponding that the equipment obtains second data
Business datum, the business datum that will acquire are sent to described after merging with the part of the second data corresponding in next frame business datum
Purpose equipment.The i.e. described equipment obtains business datum corresponding with the second data in this current frame business datum, the industry that will acquire
Part corresponding with its (next frame business datum) second data is sent to institute after merging in business data and next frame business datum
State purpose equipment.If specific process may is that the still inadequate byte of the business datum after merging, by the industry after merging
Part corresponding with its second data merges and is transmitted again in business data and lower next frame business datum, i.e., until the second data
When corresponding business datum meets transmission requirement (for a complete bytes), the corresponding business datum of the second data of Fang Jiang is sent to institute
State purpose equipment；It, will this current frame business datum and next frame business number if the business datum after merging is greater than a byte
It forms a byte with this current frame business datum in be transmitted, extra part is next under in next frame business datum
Frame data are transmitted.For example, the second data of this current frame business datum are 4, the second data pair of current service data are represented
The business datum answered is 4Bit, and the second data of next frame business datum are 3, and it is corresponding to represent the second data of next frame business datum
Business datum be 3Bit, the two merge after be also only 7Bit, an inadequate byte needs and lower next frame business datum
The corresponding part of second data, which merges, to be transmitted, and is transmitted after gathering enough a byte (8Bit).For another example this current frame industry
Second data of data of being engaged in are 4, represent the corresponding business datum of the second data of current service data as 4Bit, next frame business number
According to the second data be 5, represent the corresponding business datum of the second data of next frame business datum as 5Bit, the two merges later
Only it is 9Bit, extracts preceding 4Bit data and this current frame data from the corresponding business datum of the second data of next frame business datum
4Bit data are sent to the purpose equipment after merging, and that remaining 1Bit data of next frame business datum are next under
Frame business datum merges.The purpose equipment gets the distribution of the business datum of transmitting according to the characterize data of transmitting
To obtain each complete frame business datum according to the distribution of the business datum of acquisition.In the present embodiment, by will not
The business datum that can directly transmit, which is incorporated into next frame data, is combined transmission, ensure that the completion of business datum, mentions
The high reliability of business transmitting.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.Pass through above embodiment party
The description of formula, it is required general that those skilled in the art can be understood that above-described embodiment method can add by software
The mode of hardware platform is realized, naturally it is also possible to which by hardware, but in many cases, the former is more preferably embodiment.It is based on
Such understanding, substantially the part that contributes to existing technology can be with software product in other words for technical solution of the present invention
Form embody, which is stored in a storage medium (such as flash memory/memory, magnetic disk, CD), packet
Some instructions are included to use so that a terminal device (can be mobile phone, computer, server or the network equipment etc.) executes sheet
Invent method described in each embodiment.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of method of business clock transparent transmission, which is characterized in that the method for the business clock transparent transmission the following steps are included:
When needing to transmit there are business datum, over-sampling is carried out to the business datum, and obtain having for the business datum
Imitate the quantity of sampled point；The business datum includes low-speed service data and high speed business data, described to the business datum
The step of carrying out over-sampling includes: to obtain the service rate of the business datum, and determine over-sampling according to the service rate
Multiple；Over-sampling is carried out to the business datum according to determining over-sampling multiple；
According to the quantity of preset algorithm and the effective sampling points of acquisition, the clock information that the business datum is calculated is corresponding
Characterize data；
The characterize data is sent to purpose equipment, so that the purpose equipment obtains the business according to the characterize data
The clock information of data.
2. the method for business clock transparent transmission as described in claim 1, which is characterized in that described to be sent to the characterize data
Purpose equipment, the step of clock information of the business datum is obtained according to the characterize data for the purpose equipment packet
It includes:
The characterize data is added in the overhead data of the business datum；
The overhead data after the characterize data will be added and be sent to purpose equipment, so that the purpose equipment is according to addition
The overhead data of characterize data obtains the clock information of the business datum.
3. the method for business clock transparent transmission as claimed in claim 1 or 2, which is characterized in that described to obtain the business datum
The step of quantity of effective sampling points includes:
It determines the corresponding ODU type of the business datum, and obtains the determining ODU type corresponding ODU frame period；
Obtain the quantity of the effective sampling points of the business datum in an ODU frame period.
4. the method for business clock transparent transmission as claimed in claim 1 or 2, which is characterized in that the characterize data includes first
Data and the second data, the method for the business clock transparent transmission further comprise the steps of:
The corresponding business datum of first data is sent to the purpose equipment；
Obtain the corresponding business datum of second data, the business datum that will acquire and in next frame business datum corresponding second
The part of data is sent to the purpose equipment after merging.
5. a kind of device of business clock transparent transmission, which is characterized in that the device of the business clock transparent transmission includes:
Over-sampling module, for carrying out over-sampling to the business datum when needing to transmit there are business datum；The business
Data include low-speed service data and high speed business data；
Obtain module, the quantity of the effective sampling points for obtaining the business datum；It is also used to: obtaining the business datum
Service rate；The over-sampling module is also used to determine the multiple of over-sampling according to the service rate；It is adopted according to determining mistake
Sample multiple carries out over-sampling to the business datum；
The business datum is calculated for the quantity according to preset algorithm and the effective sampling points of acquisition in computing module
The corresponding characterize data of clock information；
Sending and receiving module, for the characterize data to be sent to purpose equipment, so that the purpose equipment is according to the characterization number
According to obtaining the clock information of the business datum.
6. the device of business clock transparent transmission as claimed in claim 5, which is characterized in that the device of the business clock transparent transmission is also
It include: processing module,
The processing module, for the characterize data to be added in the overhead data of the business datum；
The sending and receiving module is also used to add the overhead data after the characterize data and is sent to purpose equipment, for described
Purpose equipment obtains the clock information of the business datum according to the overhead data for adding the characterize data.
7. such as the device of business clock transparent transmission described in claim 5 or 6, which is characterized in that the acquisition module is also used to:
Determine the corresponding ODU type of the business datum；Obtain the determining ODU type corresponding ODU frame period；Obtain an institute
State the quantity of the effective sampling points of the business datum in the ODU frame period.
8. such as the device of business clock transparent transmission described in claim 5 or 6, which is characterized in that the dress of the business clock transparent transmission
Setting further includes merging module,
The sending and receiving module is also used to the corresponding business datum of the first data being sent to the purpose equipment；
The acquisition module is also used to obtain the corresponding business datum of the second data；
The merging module, the business datum for will acquire merge with the part of the second data corresponding in next frame business datum
The purpose equipment is sent to by sending and receiving module afterwards.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410282726.9A CN105323053B (en) | 2014-06-23 | 2014-06-23 | The method and device of business clock transparent transmission |
| PCT/CN2014/088576 WO2015196637A1 (en) | 2014-06-23 | 2014-10-14 | Method and apparatus for service clock passthrough |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410282726.9A CN105323053B (en) | 2014-06-23 | 2014-06-23 | The method and device of business clock transparent transmission |
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| CN107786299B (en) | 2016-08-25 | 2021-06-08 | 华为技术有限公司 | Method, device and network system for sending and receiving service |
| CN108347317B (en) * | 2017-01-22 | 2020-11-10 | 华为技术有限公司 | Service transmission method, network equipment and network system |
| CN114157383B (en) * | 2021-12-03 | 2023-04-28 | 安徽皖通邮电股份有限公司 | Cm clock recovery algorithm, system, storage medium and equipment based on FPGA |
| CN115941120B (en) * | 2023-01-10 | 2023-05-23 | 北京东远润兴科技有限公司 | Data synchronization method, device, equipment and storage medium |
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| CN101489157A (en) * | 2009-02-13 | 2009-07-22 | 华为技术有限公司 | Method and apparatus for mapping service integration onto optical channel delivery unit |
| CN102480415A (en) * | 2010-11-26 | 2012-05-30 | 中兴通讯股份有限公司 | Method and device for recovering optical transport network clock by reference clock |
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| CN103384178A (en) * | 2012-05-02 | 2013-11-06 | 中兴通讯股份有限公司 | ODU frame-like mapping method and device |
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| US9143142B2 (en) * | 2012-01-19 | 2015-09-22 | Ciena Corporation | Transparent timing of a stratum synchronized ethernet signal using standard optical transport network rates |
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| CN101489157A (en) * | 2009-02-13 | 2009-07-22 | 华为技术有限公司 | Method and apparatus for mapping service integration onto optical channel delivery unit |
| CN102480415A (en) * | 2010-11-26 | 2012-05-30 | 中兴通讯股份有限公司 | Method and device for recovering optical transport network clock by reference clock |
| CN102761792A (en) * | 2011-04-27 | 2012-10-31 | 中兴通讯股份有限公司 | GMP mapping device and method in OTNs |
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