CN106303766B - The method and device of Bandwidth adjustment - Google Patents
The method and device of Bandwidth adjustment Download PDFInfo
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- CN106303766B CN106303766B CN201510297302.4A CN201510297302A CN106303766B CN 106303766 B CN106303766 B CN 106303766B CN 201510297302 A CN201510297302 A CN 201510297302A CN 106303766 B CN106303766 B CN 106303766B
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- tributary signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
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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
- H04B10/25—Arrangements specific to fibre transmission
Abstract
The invention discloses a kind of bandwidth adjusting methods, are related to technical field of photo communication, and the method is applied in optical transport network, which comprises obtain the bandwidth of current business to be transmitted；If there are bandwidth differences for the currently current bandwidth of the bandwidth of business to be transmitted and the transmission unit, the quantity n of logic tributary signal to be adjusted is determined according to the bandwidth difference；According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, the quantity m of light tributary signal to be adjusted is determined；The quantity of current photon carrier wave, current light tributary signal and logic tributary signal is adjusted according to the quantity m of the quantity n of the determining logic tributary signal to be adjusted and the light tributary signal to be adjusted.
Description
Technical field
The present invention relates to technical field of photo communication more particularly to a kind of method and devices of Bandwidth adjustment.
Background technique
Optical transport network (English: Optical transport network, referred to as: OTN) as next-generation transmission net
Core technology is based on wavelength-division multiplex technique, in the transmission net of light layer tissue network.OTN includes the skill of electric layer and photosphere
Art specification can be realized the transmission of large capacity business using optical fiber as transmission medium, thus be widely used in Metropolitan Area Network (MAN)
(English: Metropolitan Area Network, referred to as: MAN) in.OTN in Metropolitan Area Network (MAN), as shown in Figure 1, including multiple
The network equipment (English: network equipment, abbreviation NE) and interchanger, between heterogeneous networks equipment, the network equipment and friendship
The transmission of signal is carried out between changing planes by optical fiber.
Wherein, transmission process of the signal from sending ending equipment to receiving device, specifically includes: sending ending equipment will be to be passed
Defeated business by packing bearing to optical channel transmission unit (English: Optical Transport Unit-k order, referred to as:
OTUk), then it is transmitted to photonic integrated circuits (English: Photonics Integeration Circuit, abbreviation PIC) and carries out light
Multiple smooth tributary signals are formed after electricity conversion, multiple smooth tributary signals form light tributary signal group, then will be in light tributary signal group
Including each smooth tributary signal by being transmitted to receiving device by optical fiber after photon carriers carry.It is opposite with transmitting terminal, it connects
Receiving end receive after light tributary signal first by PIC will light tributary signal carry out photoelectricity inverse conversion after carried by OTU and parse to
Transmission services.Wherein, in OTUk k value can be 1,2,3,4, corresponding transmission bandwidth be respectively 2.5Gbits/s,
10Gbits/s, 40Gbits/s and 100Gbits/s.The optical channel transmission unit of which kind of bandwidth is chosen by the band of Ethernet interface
Width determines that the total bandwidth of the photon carrier wave of selection will match with the bandwidth of Ethernet interface.Work as Ethernet as Fig. 2-a gives
When interface is the electric signal of the road n 40Gbit/s, corresponding optical channel transmission unit is the OTU3 of n 40Gbit/s, and passes through 4n
The photon carrier wave of a 10Gbit/s transmits light tributary signal；As Fig. 2-b gives when Ethernet interface bandwidth is the road n 100Gbit/
When s, corresponding optical channel transmission unit is the OTU4 of n 100Gbit/s, and passes through the transmission of the photon carrier wave of 4n 25Gbit/s
Light tributary signal.
The existing this method that the optical channel transmission unit used is determined according to the bandwidth of Ethernet interface, once ether
The bandwidth of network interface determines that then the bandwidth of used optical channel transmission unit also determines according to this.In this way, working as data to be transmitted
Bandwidth be less than Ethernet interface bandwidth when, be easy to cause the waste of optical channel transmission unit bandwidth and photon carrier wave, work as reality
When the band of border data to be transmitted is wider than the transmission bandwidth of Ethernet interface, existing this optical channel transmission unit and photon are carried
Wave can not carry data to be transmitted.
Summary of the invention
The present invention provides a kind of method and device of Bandwidth adjustment, in the prior art due to optical channel transmission in order to solve
The bandwidth of unit determines by the bandwidth of Ethernet interface, and bring bandwidth waste or can not effectively carry asking for data to be transmitted
Topic.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
In a first aspect, the method is applied in optical transport network, described the present invention provides a kind of bandwidth adjusting method
Transmission unit in optical transport network includes at least logic tributary signal all the way, and the quantity of the logic tributary signal is adjustable, often
The bandwidth of logic tributary signal described in road is equal and is preset value, and the bandwidth of the transmission unit is equal to all logic branches
The sum of bandwidth of signal, the light tributary signal group in the optical transport network include at least light tributary signal all the way, the light branch
The quantity of road signal is adjustable, which comprises
Obtain the bandwidth of current business to be transmitted；
If there are bandwidth difference, bases for the currently current bandwidth of the bandwidth of business to be transmitted and the transmission unit
The bandwidth difference determines the quantity n of logic tributary signal to be adjusted；
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light tributary signal to be adjusted is determined
Quantity m；
According to the number of the quantity n of the determining logic tributary signal to be adjusted and the light tributary signal to be adjusted
Amount m adjusts the quantity of current photon carrier wave, current light tributary signal and logic tributary signal.
With reference to first aspect, in the first implementation of first aspect, if the current business to be transmitted
Bandwidth and the current bandwidth of the transmission unit there are bandwidth differences, then logic branch to be adjusted is determined according to the bandwidth difference
The quantity n of signal, specifically includes:
If the band of the current business to be transmitted is wider than the current bandwidth of the transmission unit, according to the bandwidth
Difference determines the quantity n of logic tributary signal to be increased；
Then, according to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light branch to be adjusted is determined
The quantity m of signal, specifically includes:
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light tributary signal to be increased is determined
Quantity m；
Then, according to the quantity n and the light tributary signal to be adjusted of the determining logic tributary signal to be adjusted
Quantity m adjust the quantity of current photon carrier wave, current light tributary signal and logic tributary signal, specifically include:
It activates m photon carrier wave and generates m light tributary signal corresponding with the m photon carrier wave；
The m light tributary signal is increased in the smooth tributary signal group and changes opening for the smooth tributary signal group
Pin；
The activation road n logic tributary signal simultaneously increases to the road the n logic tributary signal in the transmission unit.
With reference to first aspect, in second of implementation of first aspect, if the current business to be transmitted
Bandwidth and the current bandwidth of the transmission unit there are bandwidth differences, then logic branch to be adjusted is determined according to the bandwidth difference
The quantity of signal, specifically includes:
If the current service bandwidth to be transmitted is less than the current bandwidth of the transmission unit and the bandwidth difference is greater than
The bandwidth of single channel logic tributary signal then determines the quantity n of logic tributary signal to be deleted according to the bandwidth difference；
Then, according to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light branch to be adjusted is determined
The quantity of signal, specifically includes:
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light tributary signal to be deleted is determined
Quantity m；
Then, according to the quantity n and the light tributary signal to be adjusted of the determining logic tributary signal to be adjusted
Quantity m adjust the quantity of current photon carrier wave, current light tributary signal and logic tributary signal, specifically include:
The road the n logic tributary signal is deleted from the transmission unit；
M light tributary signal corresponding to the road the n logic tributary signal is deleted and updated from light tributary signal group
The expense of the smooth tributary signal group；
Close m photon carrier wave corresponding to the m light tributary signal.
With reference to first aspect or any one reality in the first implementation of first aspect, second of implementation
Existing mode, in the third implementation of first aspect,
The frame structure of the transmission unit includes overhead area and payload section, and the overhead area includes logic branch described in every road
The overhead area of signal；The payload section includes the payload section of logic tributary signal described in every road；
The time slot division methods of the payload section of the transmission unit specifically include:
According to the pre-set bandwidths of the bandwidth of single channel logic tributary signal and single time slot, determine in single channel logic tributary signal
The number of included time slot；
It is determined according to the number of logic tributary signal included in the transmission unit included in the transmission unit
Time slot total number；
According to preset byte carry out time slot division, and by the different logic tributary signals according to the preset byte according to
Secondary interleaver.
With reference to first aspect, in the 4th kind of implementation of first aspect,
The current business to be transmitted be include that the optical channel data transmission unit business and flexible optical channel data pass
The mixed service of at least two-way of defeated unit business；Or
The current business to be transmitted is to carry the flexible Optical Channel Data Unit-k business of the ether business of 25Gbit/s.
With reference to first aspect, in the 5th kind of implementation of first aspect, the transmission unit includes optical channel payload
At least one of unit, Optical Channel Data Unit-k and optical channel transmission unit.
Second aspect, the present invention also provides a kind of Bandwidth adjustment device, described device is applied in optical transport network, institute
Stating transmission unit in optical transport network includes at least logic tributary signal all the way, and the quantity of the logic tributary signal is adjustable,
The bandwidth of logic tributary signal described in every road is equal and is preset value, and the bandwidth of the transmission unit is equal to all logic branch
The sum of the bandwidth of road signal, the light tributary signal group in the optical transport network include at least light tributary signal all the way, the light
The quantity of tributary signal is adjustable, and described device includes:
Module is obtained, for obtaining the bandwidth of current business to be transmitted；
Processing module, the bandwidth of the current business to be transmitted for obtaining when the acquisition module and the transmission are single
The current bandwidth of member determines the quantity n of logic tributary signal to be adjusted according to the bandwidth difference there are when bandwidth difference；
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light tributary signal to be adjusted is determined
Quantity m；
Adjust module, for according to the processing module determine the logic tributary signal to be adjusted quantity n and
The quantity m of the light tributary signal to be adjusted adjusts current photon carrier wave, current light tributary signal and logic tributary signal
Quantity.
In conjunction with second aspect, in the first implementation of second aspect, the processing module is specifically used for:
When the band of the current business to be transmitted is wider than the current bandwidth of the transmission unit, according to the bandwidth difference
Determine the quantity n of logic tributary signal to be increased；
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light tributary signal to be increased is determined
Quantity m；
The adjustment module, is specifically used for:
It activates m photon carrier wave and generates m light tributary signal corresponding with the m photon carrier wave；
The m light tributary signal is increased in the smooth tributary signal group and changes opening for the smooth tributary signal group
Pin；
The activation road n logic tributary signal simultaneously increases to the road the n logic tributary signal in the transmission unit.
In conjunction with second aspect, in second of implementation of second aspect, the processing module is specifically also used to:
When the current service bandwidth to be transmitted be less than the current bandwidth of the transmission unit and the bandwidth difference be greater than it is single
When the bandwidth of road logic tributary signal, the quantity n of logic tributary signal to be deleted is determined according to the bandwidth difference；
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light tributary signal to be deleted is determined
Quantity m；
The adjustment module, is specifically also used to:
The road the n logic tributary signal is deleted from the transmission unit；
M light tributary signal corresponding to the road the n logic tributary signal is deleted and updated from light tributary signal group
The expense of the smooth tributary signal group；
Close m photon carrier wave corresponding to the m light tributary signal.
In conjunction with any one realization in the first implementation of second aspect, second aspect, second of implementation
Mode, in the third implementation of second aspect,
The frame structure of the transmission unit includes overhead area and payload section, overhead area logic branch as described in every road letter
Number according to preset byte, successively interleaver is formed for overhead area；The payload of payload section logic tributary signal as described in every road
According to the preset byte, successively interleaver is formed in area；
Described device further includes time slot division module, is used for:
According to the pre-set bandwidths of the bandwidth of single channel logic tributary signal and single time slot, determine in single channel logic tributary signal
The number of included time slot；
It is determined according to the number of logic tributary signal included in the transmission unit included in the transmission unit
Time slot total number；
Time slot division is carried out according to the preset byte.
In conjunction with second aspect, in the 4th kind of implementation of second aspect,
It is described that obtain the current business to be transmitted that module obtains to be include the optical channel data transmission unit business
With the mixed service of at least two-way of flexible optical channel data transmission unit business；Or
The current business to be transmitted is to carry the flexible Optical Channel Data Unit-k business of the ether business of 25Gbit/s.
The method and apparatus of Bandwidth adjustment provided by the invention changes corresponding adjustment logic according to the bandwidth of current business
The quantity of tributary signal, light tributary signal and photon carrier wave adjusts the bandwidth of optical transport network in turn and is passed with providing suitable bandwidth
Defeated current business, compared with the bandwidth in optical transport network in the prior art is determined by the bandwidth of Ethernet interface and is non-adjustable,
The bandwidth of optical transport network in the present invention is adjustable, it is thus possible to avoid working as because of business to be transmitted and optical transport network
Preceding bandwidth mismatches and bring bandwidth waste or the problem of can not effectively transmit, and realizes effective transmission of data.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of OTN network；
Fig. 2-a and Fig. 2-b is that the transmitting terminal network equipment and the receiving end network equipment carry out in OTN network in the prior art
The structural schematic diagram of data transmission；
Fig. 3 is a kind of flow diagram of the method for Bandwidth adjustment provided in an embodiment of the present invention；
Fig. 4 is the flow diagram of the method for Bandwidth adjustment when bandwidth provided in an embodiment of the present invention increases；
Fig. 5 is a kind of process signal for specific implementation that bandwidth provided in an embodiment of the present invention increases Time Bandwidth adjustment
Figure；
Fig. 6 is the flow diagram of the method for Bandwidth adjustment when bandwidth provided in an embodiment of the present invention reduces；
Fig. 7 is that a kind of process of specific implementation of Bandwidth adjustment when bandwidth provided in an embodiment of the present invention reduces is shown
It is intended to；
Fig. 8 is the flow diagram for the method that the time slot of the payload section of transmission unit provided in an embodiment of the present invention divides；
Fig. 9 is the frame structure schematic diagram of the OTU provided in an embodiment of the present invention comprising FEC；
Figure 10 is the schematic diagram of the frame structure of the OTU provided in an embodiment of the present invention not comprising FEC；
Figure 11-1 is that the payload section of single channel OTULL provided in an embodiment of the present invention interleaves using M=16 byte as its time slot
The time slot of granularity, the payload section OPU for dividing the period as one using 20 frames divides schematic diagram；
Figure 11-2 is the frame for the OTU that the road n OTULL provided in an embodiment of the present invention is formed according to M=16 byte intertexture division multiplexing
The schematic diagram of the payload section OPU of structure；
Figure 12 is the frame structure carrying mixing industry of the transmission unit provided in an embodiment of the present invention using the embodiment of the present invention
The flow diagram of the method for business；
Figure 13 is that the frame structure of the transmission unit provided in an embodiment of the present invention using the embodiment of the present invention carries special industry
The flow diagram of the method for business；
Figure 14 is a kind of structural schematic diagram of the device of Bandwidth adjustment provided in an embodiment of the present invention；
Figure 15 is the structural schematic diagram of the device of another Bandwidth adjustment provided in an embodiment of the present invention；
Figure 16 is the structural schematic diagram of the device of another Bandwidth adjustment provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the present embodiment, the technical solution in the present embodiment is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
The embodiment of the invention provides a kind of bandwidth adjusting method, the method is applied in optical transport network.Wherein, should
The network architecture of optical transport network is as shown in Figure 1.
The transmission unit in the optical transport network in the embodiment of the present invention includes at least logic tributary signal all the way, institute
The quantity for stating logic tributary signal is adjustable, and the bandwidth of logic tributary signal described in every road is equal and is preset value, and the transmission is single
The bandwidth of member is equal to the sum of the bandwidth of all logic tributary signals, and the light tributary signal group in the optical transport network includes
At least light tributary signal all the way, the quantity of the smooth tributary signal is adjustable.
Wherein, a part of logic branch as the transmission unit, for carrying low order/high-order ODU business or use
The ODUflex special project business of ether business is encapsulated in carrying；Transmission unit is removable later is divided into the road n logic tributary signal；Light
Branch is for carrying corresponding logic tributary signal and carrying corresponding photosphere monitoring management expense；It is formed later by photoelectric conversion
Optical signal is simultaneously modulated to corresponding light subcarrier, is transmitted by optical fiber.
Wherein, the bandwidth of single channel logic tributary signal can be 40Gbit/s, 10Gbit/s, 12.5Gbit/s, 25Gbit/
S, 50Gbit/s, 100Gbit/s etc..
It should be noted that bandwidth value provided in an embodiment of the present invention is a general bandwidth class value, tool is not represented
The exact value of body.
The bandwidth of single channel logic tributary signal can be set according to the following aspects:
In a first aspect, due to being to be transmitted by adjusting the number of single channel logic tributary signal to adjust in the embodiment of the present invention
The bandwidth of unit, thus the bandwidth variable quantity adjusted every time is the integral multiple of the bandwidth of single channel logic tributary signal.Then single channel is patrolled
The bandwidth for collecting tributary signal is smaller, and the range of BREATHABLE BANDWIDTH amount is bigger.
Second aspect, due to the bandwidth of the transmission unit in optical transport network and the light branch of all smooth tributary signal compositions
The total bandwidth of signal group will be consistent, and the bandwidth of transmission unit and light tributary signal group is all the single channel branch for including inside it
The product of the number of the bandwidth and tributary signal of road signal, thus the bandwidth of single channel logic tributary signal is generally set as single channel
The integral multiple of the bandwidth of light tributary signal, the quantity of logic tributary signal, adjusts the quantity in this way in adjustment transmission unit
The light tributary signal of certain multiple.Certainly, this integral multiple can be 1, such as: the bandwidth of light tributary signal is generally set
For 10Gbit/s or 25Gbit/s, then the bandwidth of corresponding logic tributary signal is also set to 10Gbit/s or 25Gbit/s, this
The logic tributary signal that sample needs to adjust is identical with the quantity of light tributary signal.
The third aspect, due to consideration that the feasibility and low cost of current 25Gbit/s technology, IEEE802.3 are stepping up
Formulate 25Gbit/s interface.As the marketization of 25Gbit/s business is universal, subsequent 25Gbit/s, 50Gbit/s bandwidth may be drilled
Into for Metropolitan Area Network primary interface form, thus a kind of implementation of the bandwidth of single channel logic tributary signal is 25Gbit/s.
In the bandwidth of actual set single channel logic tributary signal, the above can be comprehensively considered, it can also be according to reality
Need only to consider one of those or several aspects or other aspects.
The number for the logic tributary signal for including in transmission unit can estimating according to transmission services in initial setting up
Maximum setting.
In addition, transmission unit signified in the embodiment of the present invention includes optical channel Payload Unit (English: Optical
Channel Payload Unit, abbreviation OPU), Optical Channel Data Unit-k (English: Optical Channel Data Unit,
Referred to as: ODU) and in optical channel transmission unit (English: Optical Channel Transport Unit, abbreviation OTU) extremely
Few one kind, these three transmission units are the necessary transmission unit in OTN, and broadly, OPU, ODU, OTU have certain level
Relationship is that business to be transmitted is mapped into the payload section OPU and adds mapping cost first, forms OPU frame；It is added on OPU frame
ODU expense (wherein, ODU expense is monitored for end-to-end path), forms ODU frame；OTU expense and forward direction are added on ODU frame
Error correcting (English: Forward Error Correction, referred to as: FEC) (wherein, OTU expense arrives check information for point
Point link monitoring), OTU frame is formed, the business to be transmitted is then sent out, thus OPU, ODU and OTU three are one-to-one
Relationship.Correspondingly, the corresponding logic branch of OPU can be referred to as optical channel payload logic branch (English: Optical Channel
Payload Unit Logic Lane, referred to as: OPULL), the corresponding logic branch of ODU can be referred to as optical channel mathematical logic branch
Road (English: Optical Channel Data Unit Logic Lane, referred to as: ODULL), the corresponding logic branch of OTU can
Referred to as optical channel transmission logic branch (English: Optical Channel Transport Unit Logic Lane, referred to as:
OTULL)。
In addition, the embodiment of the present invention gives a kind of life of the logic branch of different bandwidth for single channel logic branch
Name method, when the bandwidth of single channel logic branch be 10Gbit/s when, single channel logic branch can be respectively designated as OPUX, ODUX,
OTUX, accordingly by the transmission unit that the single channel logic branch of the road n 10Gbit/s forms can be respectively designated as OPUXn,
ODUXn,OTUXn；When the bandwidth of single channel logic branch is 25Gbit/s, single channel logic branch can be respectively designated as
OPUXXV, ODUXXV, OTUXXV can be distinguished by the transmission unit that the single channel logic branch of the road n 25Gbit/s forms accordingly
It is named as OPUXXVn, ODUXXVn, OTUXXVn；When the bandwidth of single channel logic branch is 40Gbit/s, single channel logic branch can
To be respectively designated as OPUXL, ODUXL, OTUXL, the transmission unit that is made of accordingly the single channel logic branch of the road n 40Gbit/s
It can be respectively designated as OPUXLn, ODUXLn, OTUXLn；When the bandwidth of single channel logic branch is 50Gbit/s, single channel logic
Branch can be respectively designated as OPUL, ODUL, OTUL, the transmission being made of accordingly the single channel logic branch of the road n 50Gbit/s
Unit can be respectively designated as OPULn, ODULn, OTULn；When the bandwidth of single channel logic branch is 100Gbit/s, single channel is patrolled
OPUC, ODUC, OTUC can be respectively designated as by collecting branch, the biography being made of accordingly the single channel logic branch of the road n 100Gbit/s
Defeated unit can be respectively designated as OPUCn, ODUCn, OTUCn；Wherein, X, XXV, XL, L, C are Roman character, respectively represent 10,
25,40,50,100 meaning.
On the basis of above-mentioned transmission unit provided in an embodiment of the present invention, as shown in Figure 3, which comprises
101: obtaining the bandwidth of current business to be transmitted.
102: if the current bandwidth of the bandwidth of the current business to be transmitted and the transmission unit there are bandwidth difference,
The quantity n of logic tributary signal to be adjusted is determined according to the bandwidth difference.
By the bandwidth of this step transmission unit adjusted need to be greater than or equal to the bandwidth of current business to be transmitted with
Guarantee effective carrying of business to be transmitted.
Such as: be currently included in transmission unit 10 road 25Gbit/s logic tributary signal namely transmission unit it is current
Total bandwidth is 250Gbit/s, if when business to be transmitted bandwidth be 100Gbit/s, bandwidth decrement 150Gbit/s,
Then the quantity of logic tributary signal to be deleted is 6；If the bandwidth of business to be transmitted is 120Gbit/s, bandwidth decrement
For 130Gbit/s, then the quantity of logic tributary signal to be deleted is 5 tunnels；If the bandwidth when business to be transmitted is
320Gbit/s, then bandwidth increment is 70Gbit/s, then the quantity of logic tributary signal to be increased is 3 tunnels.
103: according to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, determining light branch to be adjusted
The quantity m of signal.
Since the total bandwidth of transmission unit and the total bandwidth needs of light tributary signal group are consistent, thus passed having determined
After the amount of bandwidth that defeated unit needs to adjust, it is also necessary to determine the quantity of smooth tributary signal to be adjusted.
It can be obtained according to the corresponding relationship between the bandwidth of single channel logic tributary signal and the bandwidth of single channel light tributary signal
Quantity corresponding relationship between the two, such as: the bandwidth of single channel logic tributary signal is 40Gbit/s, single channel light tributary signal
When bandwidth is 10Gbit/s, 1 tunnel logic tributary signal of adjustment needs 4 road light tributary signals of corresponding adjustment.
Certainly, in a kind of implementation of this step, the bandwidth and single channel light tributary signal of single channel logic tributary signal
Bandwidth it is equal, then quantitative relation both is 1:1, and this implementation is realized simpler in adjustment.
104: according to the quantity n and the light tributary signal to be adjusted of the determining logic tributary signal to be adjusted
Quantity m adjust the quantity of current photon carrier wave, current light tributary signal and logic tributary signal.
Wherein, each photon carrier wave is for carrying light tributary signal all the way, thus the quantity of photon carrier wave to be adjusted and
The quantity of light tributary signal to be adjusted is identical, is m.The number of photon carrier wave can be adjusted by closing or activating photon carrier wave
Amount, adjusts the quantity of light tributary signal by generating or deleting light tributary signal, by generating or deleting logic tributary signal
Quantity adjust the quantity of logic tributary signal.
The method of Bandwidth adjustment provided in an embodiment of the present invention changes corresponding adjustment logic according to the bandwidth of current business
The quantity of tributary signal, light tributary signal and photon carrier wave adjusts the bandwidth of optical transport network in turn and is passed with providing suitable bandwidth
Defeated current business, compared with the bandwidth in optical transport network in the prior art is determined by the bandwidth of Ethernet interface and is non-adjustable,
The bandwidth of optical transport network in the present invention is adjustable, it is thus possible to avoid working as because of business to be transmitted and optical transport network
Preceding bandwidth mismatches and bring bandwidth waste or the problem of can not effectively transmit, and realizes effective transmission of business.
As a kind of specific implementation of method shown in Fig. 3, when the band of current business to be transmitted is wider than current bandwidth,
If then as shown in figure 4, the current bandwidth of the bandwidth of the current business to be transmitted and the transmission unit there are bandwidth
Difference then determines the quantity n of logic tributary signal to be adjusted according to the bandwidth difference, specifically includes:
201: if the band of the current business to be transmitted is wider than the current bandwidth of the transmission unit, according to
Bandwidth difference determines the quantity n of logic tributary signal to be increased.
Then, according to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light branch to be adjusted is determined
The quantity m of signal, specifically includes:
202: according to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, determining light branch to be increased
The quantity m of signal.
Then, according to the quantity n and the light tributary signal to be adjusted of the determining logic tributary signal to be adjusted
Quantity m adjust the quantity of current photon carrier wave, current light tributary signal and logic tributary signal, specifically include:
203: m photon carrier wave of activation simultaneously generates m light tributary signal corresponding with the m photon carrier wave.
204: the m light tributary signal being increased in the smooth tributary signal group and changes the smooth tributary signal group
Expense.
Wherein, light tributary signal group expense (English: Optical Tributary Signal Group Overhead,
Abbreviation OTSiGO) it is used to indicate the total number of OTS included by current OTSiG and the centre frequency of each OTSi, frequency spectrum are wide
Degree, modulation format equiwavelength's information.In addition, the OTSiG-O can be passed by out-of-band delivery, such as by dedicated expense wavelength
It send.
205: the activation road n logic tributary signal simultaneously increases to the road the n logic tributary signal in the transmission unit.
Due to the one-to-one relationship of ODU, OPU and OTU, thus need synchronous the generation road n, OPULL, ODULL and OTULL
And increase in current OPU, ODU or OTU.
As previously mentioned, the method for Bandwidth adjustment provided in an embodiment of the present invention is mainly used in any two in OTN network
During the network equipment is communicated, thus for current business to be transmitted, sending ending equipment and receiving device are required to
Carry out Bandwidth adjustment.In order to carry out clearer explanation to above-mentioned steps 203 to step 205, with the network equipment 1 and the network equipment
2 as two network equipments for needing Bandwidth adjustment, the embodiment of the invention also provides adjustment photon carrier wave, light tributary signal and
The specific implementation process of logic tributary signal, as shown in Figure 5, comprising:
301: m photon carrier wave of activation simultaneously generates m light tributary signal corresponding with the m photon carrier wave, will generate
M light tributary signal be added in light tributary signal group.
302: synchronous the activation road n OPULL, ODULL and OTULL.
303: the lossless road n for increasing activation, OPULL, ODULL and OTULL arrive OPU, ODU and OTU respectively.Specific
During realization, which further includes following step 3031 to step 3034.
3031: the network equipment 1 and the network equipment 2 initiate to increase the increase request of the road n logic branch respectively.
Wherein, request type is carried in increase request and request the number of increased logic branch, for example, when request
When increasing n OPULL, [Req_Add, OPULLn] mark is carried in the request.
3032: when receiving after accordingly increasing request of opposite end, sending the response that the increase is requested to opposite end.
Such as: [ACK, OPULLn] mark is carried in the response.
3033: after the response that the increase for receiving opposite end is requested, local terminal will initiate to increase to implement instruction, be used for table
Show the end will send the increase implement instruction after in the increased corresponding road n logic branch bearer service.
Such as: [do_Add, OPULLn] mark is carried in implementation instruction request.
3034: when receiving after accordingly increasing implementation instruction of opposite end, local terminal is from the increased corresponding road n logic branch
Extraction business；The response that instruction is implemented in the increase is sent to opposite end simultaneously.
Such as: [ACK, OPULLn] mark is carried in the response.
After the response of instruction is implemented in the increase for receiving opposite end, the increased road the n logic branch lossless increasing is indicated
It adds in transmission unit, while realizing the lossless carrying of business.
It should be noted that increasing to the sequence of corresponding transmission unit after generating the road n OPULL, ODULL and OTULL
First to increase to the road n OTULL in OTU, then the corresponding road n ODULL increased in ODU, finally again by the corresponding road n
OPULL increases in OPU.
As a kind of specific implementation of method shown in Fig. 3, when the bandwidth of current business to be transmitted is less than current bandwidth,
If then as shown in fig. 6, the current bandwidth of the bandwidth of the current business to be transmitted and the transmission unit there are bandwidth
Difference then determines the quantity of logic tributary signal to be adjusted according to the bandwidth difference, specifically includes:
401: if the current service bandwidth to be transmitted is less than the current bandwidth of the transmission unit and the bandwidth difference
Greater than the bandwidth of single channel logic tributary signal, then the quantity n of logic tributary signal to be deleted is determined according to the bandwidth difference.
Then, according to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light branch to be adjusted is determined
The quantity of signal, specifically includes:
402: according to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, determining light branch to be deleted
The quantity m of signal.
Then, according to the quantity n and the light tributary signal to be adjusted of the determining logic tributary signal to be adjusted
Quantity m adjust the quantity of current photon carrier wave, current light tributary signal and logic tributary signal, specifically include:
403: the road the n logic tributary signal is deleted from the transmission unit.
404: m light tributary signal corresponding to the road the n logic tributary signal is deleted simultaneously from light tributary signal group
Update the expense of the smooth tributary signal group.
405: closing m photon carrier wave corresponding to the m light tributary signal.
In order to carry out clearer explanation to above-mentioned steps 403 to step 405, still with the network equipment 1 and the network equipment 2
As two network equipments for needing Bandwidth adjustment, the embodiment of the invention also provides adjustment photon carrier wave, light tributary signal and
The specific implementation process of logic tributary signal, as shown in fig. 7, comprises:
501: the road the n logic tributary signal is deleted from the transmission unit.
During the specific implementation of step 501, which includes the following steps 5011 to step 5014.
5011: the network equipment 1 and the network equipment 2 initiate to delete the removal request of the road n logic tributary signal respectively.
Such as: the mark of [Req_Remove, OPULLn] is carried when deleting the road n OPULL, in the removal request to indicate
The number of the type of the request and OPULL to be deleted.
5012: after receiving the removal request of opposite end, the response of the removal request is sent to opposite end.
Such as: the mark of [ACK, OPULLn] is carried in the response.
5013: after receiving the response of the removal request of opposite end, initiating to delete and implement instruction, to indicate sending
The deletion is implemented no longer to pass through said n routes logic tributary signal bearer service in after indicating.
Such as: the mark that instruction carries [do_Remove, OPULLn] is implemented in the deletion,
5014: after instruction is implemented in the deletion for receiving opposite end, local terminal no longer extracts in said n routes logic tributary signal
Business；The response that instruction is implemented in the deletion is sent to opposite end simultaneously.
Such as: the response can carry the mark of [ACK, OPULLn].
502: after the response of instruction is implemented in the deletion for receiving opposite end, deleting the road the n logic tributary signal.
503: m light tributary signal corresponding to the road the n logic tributary signal is deleted simultaneously from light tributary signal group
Update the expense of the smooth tributary signal group.
504: closing m photon carrier wave corresponding to the m light tributary signal.
It should be noted that process of deleting is first to delete n OPULL after determination will delete n logic tributary signal
Corresponding n ODULL is deleted again, finally deletes corresponding n OTULL.
In addition, why the bandwidth of the transmission unit in the present invention is able to carry out adjustment, the frame of this and transmission unit
Structure is related, and the frame structure of transmission unit provided in the embodiment of the present invention is that can be carried out according to the number of logic tributary signal
A kind of frame structure of adjustment.The frame structure of the transmission unit includes overhead area and payload section, and the overhead area is as described in every road
According to preset byte, successively interleaver is formed for the overhead area of logic tributary signal；Payload section logic branch as described in every road
According to the preset byte, successively interleaver is formed for the payload section of signal.The time slot division side of the payload section of the transmission unit
Method, as shown in figure 8, specifically including:
601: according to the pre-set bandwidths of the bandwidth of single channel logic tributary signal and single time slot, determining that single channel logic branch is believed
The number of included time slot in number.
Wherein, the pre-set bandwidths of the single time slot can be 1.25Gbit/s.
When the bandwidth of single channel logic tributary signal is 25Gbit/s, and the pre-set bandwidths of single time slot are 1.25Gbit/s,
The number of time slot included in available single channel logic cucurbit signal is 20.
602: institute in the transmission unit is determined according to the number of logic tributary signal included in the transmission unit
Including time slot total number.
When in transmission unit including n logic tributary signal, the total number for the time slot for including in the transmission unit is 20n
It is a.
603: carrying out time slot division according to preset byte.
Wherein, which can be single byte namely 1 byte, or M byte, wherein M is just greater than 1
Integer.In a kind of implementation of preset byte, M is that transmission unit logic realizes processing of circuit highway width, such as 16 words
Section, 64 bytes, 128 bytes, 256 bytes etc..
In order to which the frame structure to transmission unit provided in an embodiment of the present invention is clearly introduced, hereafter with OTU frame knot
It is illustrated for structure.When by n logic tributary signal according to single byte successively interleaver, transmission unit is to include the road n
Broadly, the frame structure including n OTULL, each OTULL includes overhead area and net to the frame structure of the OTU of OTULL, the OTU
The payload section of He Qu, each OTULL can be divided into 20 time slots, and each OTULL may include that FEC check field can not also wrap
FEC check field is included, the overhead area of all OTULL constitutes the overhead area of OTU, and the payload section of all OTULL constitutes the payload of OTU
Area, the area FEC of all OTULL constitute the area FEC of OTU.
The OTU frame structure specifically:
When in OTU including FEC check field, the size of the OTU is 4 row 4080*n column, wherein as shown in figure 9, the 1st row
1~7n arrange total 7n and be classified as frame head instruction expense, the total 7n of (7n+1)~14n column of the 1st row is classified as the overhead area OTU namely the road n
The overhead area of OTULL, the expense of every road OTULL are 7 column, and 1~14n of the 2nd~4 row arranges total 14n and is classified as the overhead area ODU namely n
The overhead area of road ODULL, (14n+1)~16n of the 1st~4 row arrange the expense that total 2n is classified as the overhead area OPU namely the road n OPULL
Area, (16n+1)~3824n of the 1st~4 row arrange total 3808n and are classified as the payload section OPU, (3824n+1)~4080n of the 1st~4 row
Arrange the FEC check field that total 256n is classified as OTU.
When not including FEC check field in OTU, the size of the OTU is 4 row 3824*n column, wherein as shown in Figure 10, the 1st
1 capable~7n arranges total 7n and is classified as frame head instruction expense, and (7n+1)~14n of the 1st row arranges the overhead area that total 7n is classified as the road n OTULL,
The overhead area of every road OTULL is 7 column, and 1~14n of the 2nd~4 row arranges the overhead area that total 14n is classified as the road n ODULL, the 1st~4 row
(14n+1)~16n arranges the overhead area that total 2n is classified as the road n OPULL, and (16n+1)~3824n of the 1st~4 row arranges total 3808n and is classified as
The payload section OPU.
It should be noted that the payload section OPU includes column containing filling and without filling two kinds of situations of column, shown in Fig. 9 and Figure 10
OTU frame structure be include filling column the case where, filling column be the payload section OPU last 8n column.
In addition, the time slot during the frame structure of building transmission unit divides mainly to the payload section OPU according to predetermined word
Section carries out time slot division.Wherein, which can be single byte, include the road n OTULL in OTU, with the band of every road OTULL
Width is 25Gbit/s, and the pre-set bandwidths of each time slot are 1.25Gbit/s, then arranges total 3808n column in payload section 16n+1~3824n
The time slot of 20n 1.25Gbit/s is in turn divided into according to individual character septa intersegmental, time-gap number is TS A.B；Wherein, A=1 ... n generation
The logic tributary signal of table difference number, B=1 ... 20；Such as 1.1,2.1 ..., n.1,1.2,2.2 ..., until n.20.
But when using frame structure as shown in Figure 9 and Figure 10, inside logic circuit related realization will face space division and when
Split-phase is mutually converted bring and is more cached and selector demand, with the promotion of single channel logic tributary signal bandwidth, these logics
Resource requirement can substantially non-linear promotion.Therefore the road n logic tributary signal is pressed into M byte the embodiment of the invention also provides a kind of
The frame structure that interleaver is constituted, wherein M is the positive integer greater than 1.As Figure 11-1 show the payload section of single channel OTULL with M
=16 bytes (corresponding columns is 16 column) interleave granularity as its time slot, and the OPU payload in period is divided using 20 frames as one
The time slot in area divides schematic diagram, the payload section of single channel OTULL is in turn divided into 20 1.25Gbit/s time slots, time-gap number is
(wherein A=1 ... n represents the number of single channel OTULL to TS A.B；The number of time slot in B=1 ... 20, road OTULL).Figure 11-2
It show the schematic diagram of the payload section OPU of the frame structure for the OTU that the road n OTULL is formed according to M=16 byte intertexture division multiplexing, packet
Containing 20n 1.25Gbit/s time slot.
It should be noted that above-mentioned Figure 11-1 and Figure 11-2 illustrate only the payload section OPU, wherein shown in 15-16 column
For time slot expense (English: Tributary slot overhead, abbreviation TSOH), payload structure instruction (English: payload
Structure identifier, referred to as: PSI) and multi-frame instruction.
It should be noted that above-mentioned frame structure is illustrated by taking OTU frame structure as an example, due to depositing between OPU, ODU and OTU
In the relationship encapsulated layer by layer, the frame structure of OPU is compared with the above-mentioned frame structure of OTU, and distinctive points are without the road n OTULL's
The overhead area of overhead area and the road n ODULL, the frame structure of ODU are compared with the above-mentioned frame structure of OTU, and distinctive points are without the road n
The overhead area of OTULL, thus the frame structure of OTU that the frame structure of ODU and OPU can provide according to embodiments of the present invention derives
Out, the embodiment of the present invention repeats no more.
To sum up, the above-mentioned transmission unit frame structure constituted with multibyte interleaver provided in an embodiment of the present invention compared to
Existing transmission unit frame structure has the following characteristics that
1) it is made of n logic tributary signal by M byte interleaver.
2) each logic tributary signal is corresponding with overhead area and payload section.
3) it is M byte namely its payload section by more that the time slot that the payload section of each logic tributary signal includes, which interleaves granularity,
A time slot is to interleave granularity interleaver to be constituted with M byte.
The frame structure of above-mentioned transmission unit provided in an embodiment of the present invention due to by itself and comprising the road n logic tributary signal
Corresponded, every road logic tributary signal corresponds to a part of transmission unit frame structure, it is possible to by increase or
Person deletes the frame structure for a certain number of logic tributary signals for including in the transmission unit and then adjusts the frame knot of transmission unit
Structure, to achieve the purpose that the bandwidth for adjusting transmission unit.
In addition, above-mentioned frame structure provided in an embodiment of the present invention can be used for carrying mixed service and special business.
When carrying includes the mixed of at least two-way of ODU business and flexible optical channel data transmission unit (ODUflex) business
When conjunction business, wherein the ODU business can be low order ODU business, or high-order ODU business, wherein low order ODU business
For the client traffic for carrying non-ODU business, high-order ODU business is to carry the business of low order ODU business, as shown in figure 12, the mistake
Journey includes:
701: mapping multi-service to the light data tributary unit (English: Optical channel being made of ts time slot
Data Tributary Unit, abbreviation ODTU).
Wherein, in a kind of implementation of this step, GMP mapping mode can be used.
702: the multiplexing light data tributary unit being made of ts time slot is into OPU and adds OPU expense, re-multiplexing
For OPU into ODU, re-multiplexing ODU adds OTU expense into OTU.
During the specific implementation of this step, due to for the connection between point-to-point as, thus OTU can be regarded to multiplexing
Segment interface can omit ODU expense, reduce processing complexity.
Certainly, during the specific implementation of this step, it can also refer to prior art addition ODU expense.
703: the mapping road n OTULL arrives the light tributary signal of corresponding number, and adds photosphere and monitor expense, passes through PIC/PID
The transmission of photon carrier wave.
In addition, the present invention is implemented when the bandwidth of the single channel logic tributary signal in the present embodiment is set as 25Gbit/s
The frame structure for the transmission unit that example provides can also transmit the flexible Optical Channel Data Unit-k of the ether business of carrying 25Gbit/s
This special business of business, and in the prior art since the bandwidth of transmission unit is 40Gbit/s or 100Gbit/s, with the special project
The bandwidth of business mismatches, thus cannot achieve the carrying of such special business.The specific implementation process of the special project service bearer
It is similar with multinomial mixed service is carried, it is intended to that management expense process is mapped, be multiplexed and added by business, what is be different from is
Need that bit synchronous is mapped into flexible optical channel data transmission unit (the flexible light in the road n respectively by individual event business before business mapping
Tunnel data transport unit).Such as: when special business is the Ethernet service of the road n 25Gbit/s, it is necessary first to by the road n
Bit synchronous is mapped into the road n ODUflex to the Ethernet service of 25Gbit/s respectively, forms the road n ODUflex (25G) business, then
Service bearer is realized using the step of step 701 to step 703.It is as shown in figure 13 the special industry of the carrying road n ODUflex (25G)
The realization process schematic of business.
As the realization of above-mentioned each method, the embodiment of the invention also provides a kind of Bandwidth adjustment device, described device is answered
For in optical transport network, the transmission unit in the optical transport network includes at least logic tributary signal all the way, the logic
The quantity of tributary signal is adjustable, and the bandwidth of logic tributary signal described in every road is equal and is preset value, the band of the transmission unit
Width is equal to the sum of the bandwidth of all logic tributary signals, and the light tributary signal group in the optical transport network includes at least one
The quantity of road light tributary signal, the smooth tributary signal is adjustable, and as shown in figure 14, described device includes:
Module 801 is obtained, for obtaining the bandwidth of current business to be transmitted.
Processing module 802, the bandwidth of the current business to be transmitted for being obtained when the acquisition module 801 with it is described
The current bandwidth of transmission unit determines the quantity n of logic tributary signal to be adjusted according to the bandwidth difference there are when bandwidth difference；
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light tributary signal to be adjusted is determined
Quantity m.
Module 803 is adjusted, the number of the logic tributary signal to be adjusted for determining according to the processing module 802
The quantity m for measuring n and the light tributary signal to be adjusted adjusts current photon carrier wave, current light tributary signal and logic branch letter
Number quantity.
Further, the processing module 802, is specifically used for:
When the band of the current business to be transmitted is wider than the current bandwidth of the transmission unit, according to the bandwidth difference
Determine the quantity n of logic tributary signal to be increased；
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light tributary signal to be increased is determined
Quantity m.
The adjustment module 803, is specifically used for:
It activates m photon carrier wave and generates m light tributary signal corresponding with the m photon carrier wave；
The m light tributary signal is increased in the smooth tributary signal group and changes opening for the smooth tributary signal group
Pin；
The activation road n logic tributary signal simultaneously increases to the road the n logic tributary signal in the transmission unit.
Further, the processing module 802, is specifically also used to:
When the current service bandwidth to be transmitted be less than the current bandwidth of the transmission unit and the bandwidth difference be greater than it is single
When the bandwidth of road logic tributary signal, the quantity n of logic tributary signal to be deleted is determined according to the bandwidth difference；
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light tributary signal to be deleted is determined
Quantity m；
The adjustment module 803, is specifically also used to:
The road the n logic tributary signal is deleted from the transmission unit；
M light tributary signal corresponding to the road the n logic tributary signal is deleted and updated from light tributary signal group
The expense of the smooth tributary signal group；
Close m photon carrier wave corresponding to the m light tributary signal.
Further, the frame structure of the transmission unit includes overhead area and payload section, and the overhead area includes every road institute
State the overhead area of logic tributary signal；The payload section includes the payload section of logic tributary signal described in every road；
As shown in figure 15, described device further includes time slot division module 901, is used for:
According to the pre-set bandwidths of the bandwidth of single channel logic tributary signal and single time slot, determine in single channel logic tributary signal
The number of included time slot；
It is determined according to the number of logic tributary signal included in the transmission unit included in the transmission unit
Time slot total number；
According to preset byte carry out time slot division, and by the different logic tributary signals according to the preset byte according to
Secondary interleaver.
It is further, described that obtain the current business to be transmitted that module 801 obtains to be include the optical channel data
The mixed service of at least two-way of transmission unit business and flexible optical channel data transmission unit business；Or
The current business to be transmitted is to carry the flexible Optical Channel Data Unit-k business of the ether business of 25Gbit/s.
The device of Bandwidth adjustment provided in an embodiment of the present invention changes corresponding adjustment logic according to the bandwidth of current business
The quantity of tributary signal, light tributary signal and photon carrier wave adjusts the bandwidth of optical transport network in turn and is passed with providing suitable bandwidth
Defeated current business, compared with the bandwidth in optical transport network in the prior art is determined by the bandwidth of Ethernet interface and is non-adjustable,
The bandwidth of optical transport network in the present invention is adjustable, it is thus possible to avoid working as because of business to be transmitted and optical transport network
Preceding bandwidth mismatches and bring bandwidth waste or the problem of can not effectively transmit, and realizes effective transmission of data.
As the realization of above-mentioned each method, the embodiment of the invention also provides a kind of Bandwidth adjustment device, described device is answered
For in optical transport network, the transmission unit in the optical transport network includes at least logic tributary signal all the way, the logic
The quantity of tributary signal is adjustable, and the bandwidth of logic tributary signal described in every road is equal and is preset value, the band of the transmission unit
Width is equal to the sum of the bandwidth of all logic tributary signals, and the light tributary signal group in the optical transport network includes at least one
The quantity of road light tributary signal, the smooth tributary signal is adjustable.
As shown in figure 16, described device includes processor 1001, memory 1002 and bus 1003, processor 1001 and is deposited
Reservoir 1002 is connected by bus 1003, in which:
Processor 1001, for obtaining the bandwidth of current business to be transmitted；
When the current bandwidth of the bandwidth of the current business to be transmitted of acquisition and the transmission unit is there are when bandwidth difference,
The quantity n of logic tributary signal to be adjusted is determined according to the bandwidth difference；
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light tributary signal to be adjusted is determined
Quantity m；
According to the number of the quantity n of the determining logic tributary signal to be adjusted and the light tributary signal to be adjusted
Amount m adjusts the quantity of current photon carrier wave, current light tributary signal and logic tributary signal.
Further, the processor 1001, is specifically used for:
When the band of the current business to be transmitted is wider than the current bandwidth of the transmission unit, according to the bandwidth difference
Determine the quantity n of logic tributary signal to be increased；
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light tributary signal to be increased is determined
Quantity m；
It activates m photon carrier wave and generates m light tributary signal corresponding with the m photon carrier wave；
The m light tributary signal is increased in the smooth tributary signal group and changes opening for the smooth tributary signal group
Pin；
The activation road n logic tributary signal simultaneously increases to the road the n logic tributary signal in the transmission unit.
Further, the processor 1001, is specifically used for:
When the current service bandwidth to be transmitted be less than the current bandwidth of the transmission unit and the bandwidth difference be greater than it is single
When the bandwidth of road logic tributary signal, the quantity n of logic tributary signal to be deleted is determined according to the bandwidth difference；
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light tributary signal to be deleted is determined
Quantity m；
The road the n logic tributary signal is deleted from the transmission unit；
M light tributary signal corresponding to the road the n logic tributary signal is deleted and updated from light tributary signal group
The expense of the smooth tributary signal group；
Close m photon carrier wave corresponding to the m light tributary signal.
Further, the frame structure of the transmission unit includes overhead area and payload section, and the overhead area includes every road institute
State the overhead area of logic tributary signal；The payload section includes the payload section of logic tributary signal described in every road；
The processor 1001, is also used to:
According to the pre-set bandwidths of the bandwidth of single channel logic tributary signal and single time slot, determine in single channel logic tributary signal
The number of included time slot；
It is determined according to the number of logic tributary signal included in the transmission unit included in the transmission unit
Time slot total number；
According to preset byte carry out time slot division, and by the different logic tributary signals according to the preset byte according to
Secondary interleaver.
Further, the current business to be transmitted that the processor 1001 obtains be include that the optical channel data pass
The mixed service of at least two-way of defeated unit business and flexible optical channel data transmission unit business；Or
The current business to be transmitted is to carry the flexible Optical Channel Data Unit-k business of the ether business of 25Gbit/s.
The device of Bandwidth adjustment provided in an embodiment of the present invention changes corresponding adjustment logic according to the bandwidth of current business
The quantity of tributary signal, light tributary signal and photon carrier wave adjusts the bandwidth of optical transport network in turn and is passed with providing suitable bandwidth
Defeated current business, compared with the bandwidth in optical transport network in the prior art is determined by the bandwidth of Ethernet interface and is non-adjustable,
The bandwidth of optical transport network in the present invention is adjustable, it is thus possible to avoid working as because of business to be transmitted and optical transport network
Preceding bandwidth mismatches and bring bandwidth waste or the problem of can not effectively transmit, and realizes effective transmission of data.
It should be noted that processor 1001 described in the embodiment of the present invention can be a processor, it is also possible to more
The general designation of a processing element.For example, the processor 1001 can be central processing unit (Central Processing Unit, letter
Claim CPU), it is also possible to specific integrated circuit (Application Specific Integrated Circuit, abbreviation
ASIC), or it is arranged to implement one or more integrated circuits of the embodiment of the present invention, such as: one or more micro- places
It manages device (digital signal processor, abbreviation DSP), or, one or more field programmable gate array (Field
Programmable Gate Array, abbreviation FPGA).
Memory 1002 can be a storage device, be also possible to the general designation of multiple memory elements, and can for storing
Execute program code etc..And memory 1002 may include random access memory (RAM), also may include nonvolatile memory
(non-volatile memory), such as magnetic disk storage, flash memory (Flash) etc..
It is total that bus 1003 can be industry standard architecture (Industry Standard Architecture, ISA)
Line, external equipment interconnection (Peripheral Component, PCI) bus or extended industry-standard architecture (Extended
Industry Standard Architecture, EISA) bus etc..It is total that the bus 1003 can be divided into address bus, data
Line, control bus etc..Only to be indicated with a thick line in Figure 16, it is not intended that an only bus or one kind convenient for indicating
The bus of type.
Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can borrow
Help software that the mode of required common hardware is added to realize, naturally it is also possible to which the former is more preferably by hardware, but in many cases
Embodiment.Based on this understanding, the portion that technical solution of the present invention substantially in other words contributes to the prior art
Dividing can be embodied in the form of software products, which stores in a readable storage medium, such as count
The floppy disk of calculation machine, hard disk or CD etc., including some instructions are used so that computer equipment (it can be personal computer,
Server or the network equipment etc.) execute method described in each embodiment of the present invention.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.
Claims (9)
1. a kind of bandwidth adjusting method, which is characterized in that the method is applied in optical transport network, in the optical transport network
Transmission unit include at least logic tributary signal all the way, the quantity of the logic tributary signal is adjustable, logic branch described in every road
The bandwidth of road signal is equal and is preset value, the bandwidth of the transmission unit be equal to all logic tributary signals bandwidth it
It include at least light tributary signal all the way, the quantity of the smooth tributary signal with, light tributary signal group in the optical transport network
It is adjustable, which comprises
Obtain the bandwidth of current business to be transmitted；
If there are bandwidth differences for the currently current bandwidth of the bandwidth of business to be transmitted and the transmission unit, according to
Bandwidth difference determines the quantity n of logic tributary signal to be adjusted；
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, the number of light tributary signal to be adjusted is determined
Measure m；
According to the quantity m of the quantity n of the determining logic tributary signal to be adjusted and the light tributary signal to be adjusted
Adjust the quantity of current photon carrier wave, current light tributary signal and logic tributary signal；
The frame structure of the transmission unit includes overhead area and payload section, overhead area logic tributary signal as described in every road
According to preset byte, successively interleaver is formed for overhead area；It presses payload section payload section of logic tributary signal as described in every road
According to the preset byte, successively interleaver is formed；
The time slot division methods of the payload section of the transmission unit specifically include:
According to the pre-set bandwidths of the bandwidth of single channel logic tributary signal and single time slot, determines and wrapped in single channel logic tributary signal
The number of the time slot included；
When determining included in the transmission unit according to the number of logic tributary signal included in the transmission unit
The total number of gap；
Time slot division is carried out according to the preset byte.
2. bandwidth adjusting method according to claim 1, which is characterized in that if the current business to be transmitted
There are bandwidth differences for the current bandwidth of bandwidth and the transmission unit, then determine that logic branch to be adjusted is believed according to the bandwidth difference
Number quantity n, specifically include:
If the band of the current business to be transmitted is wider than the current bandwidth of the transmission unit, true according to the bandwidth difference
The quantity n of fixed logic tributary signal to be increased；
Then, according to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light tributary signal to be adjusted is determined
Quantity m, specifically include:
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, the number of light tributary signal to be increased is determined
Measure m；
Then, according to the number of the quantity n of the determining logic tributary signal to be adjusted and the light tributary signal to be adjusted
Amount m adjusts the quantity of current photon carrier wave, current light tributary signal and logic tributary signal, specifically includes:
It activates m photon carrier wave and generates m light tributary signal corresponding with the m photon carrier wave；
The m light tributary signal is increased in the smooth tributary signal group and changes the expense of the smooth tributary signal group；
The activation road n logic tributary signal simultaneously increases to the road the n logic tributary signal in the transmission unit.
3. bandwidth adjusting method according to claim 1, which is characterized in that if the current business to be transmitted
There are bandwidth differences for the current bandwidth of bandwidth and the transmission unit, then determine that logic branch to be adjusted is believed according to the bandwidth difference
Number quantity, specifically include:
If the current service bandwidth to be transmitted is less than the current bandwidth of the transmission unit and the bandwidth difference is greater than single channel
The bandwidth of logic tributary signal then determines the quantity n of logic tributary signal to be deleted according to the bandwidth difference；
Then, according to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, light tributary signal to be adjusted is determined
Quantity, specifically include:
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, the number of light tributary signal to be deleted is determined
Measure m；
Then, according to the number of the quantity n of the determining logic tributary signal to be adjusted and the light tributary signal to be adjusted
Amount m adjusts the quantity of current photon carrier wave, current light tributary signal and logic tributary signal, specifically includes:
The road the n logic tributary signal is deleted from the transmission unit；
M light tributary signal corresponding to the road the n logic tributary signal is deleted from light tributary signal group and is updated described
The expense of light tributary signal group；
Close m photon carrier wave corresponding to the m light tributary signal.
4. bandwidth adjusting method according to claim 1, which is characterized in that
The current business to be transmitted be include optical channel data transmission unit business and flexible optical channel data transmission unit industry
The mixed service of at least two-way of business；Or
The current business to be transmitted is to carry the flexible Optical Channel Data Unit-k business of the ether business of 25Gbit/s.
5. bandwidth adjusting method according to claim 1, which is characterized in that the transmission unit includes optical channel payload list
At least one of member, Optical Channel Data Unit-k and optical channel transmission unit.
6. a kind of Bandwidth adjustment device, which is characterized in that described device is applied in optical transport network, in the optical transport network
Transmission unit include at least logic tributary signal all the way, the quantity of the logic tributary signal is adjustable, logic branch described in every road
The bandwidth of road signal is equal and is preset value, the bandwidth of the transmission unit be equal to all logic tributary signals bandwidth it
It include at least light tributary signal all the way, the quantity of the smooth tributary signal with, light tributary signal group in the optical transport network
Adjustable, described device includes:
Module is obtained, for obtaining the bandwidth of current business to be transmitted；
Processing module, the bandwidth of the current business to be transmitted for being obtained when the acquisition module and the transmission unit
Current bandwidth determines the quantity n of logic tributary signal to be adjusted according to the bandwidth difference there are when bandwidth difference；
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, the number of light tributary signal to be adjusted is determined
Measure m；
Module is adjusted, the quantity n of the logic tributary signal to be adjusted for determining according to the processing module and described
The quantity m of light tributary signal to be adjusted adjusts the quantity of current photon carrier wave, current light tributary signal and logic tributary signal；
The frame structure of the transmission unit includes overhead area and payload section, overhead area logic tributary signal as described in every road
According to preset byte, successively interleaver is formed for overhead area；It presses payload section payload section of logic tributary signal as described in every road
According to the preset byte, successively interleaver is formed；
Described device further includes time slot division module, is used for:
According to the pre-set bandwidths of the bandwidth of single channel logic tributary signal and single time slot, determines and wrapped in single channel logic tributary signal
The number of the time slot included；
When determining included in the transmission unit according to the number of logic tributary signal included in the transmission unit
The total number of gap；
Time slot division is carried out according to the preset byte.
7. Bandwidth adjustment device according to claim 6, which is characterized in that the processing module is specifically used for:
When the band of the current business to be transmitted is wider than the current bandwidth of the transmission unit, determined according to the bandwidth difference
The quantity n of logic tributary signal to be increased；
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, the number of light tributary signal to be increased is determined
Measure m；
The adjustment module, is specifically used for:
It activates m photon carrier wave and generates m light tributary signal corresponding with the m photon carrier wave；
The m light tributary signal is increased in the smooth tributary signal group and changes the expense of the smooth tributary signal group；
The activation road n logic tributary signal simultaneously increases to the road the n logic tributary signal in the transmission unit.
8. Bandwidth adjustment device according to claim 6, which is characterized in that the processing module is specifically also used to:
When the current service bandwidth to be transmitted is less than the current bandwidth of the transmission unit and the bandwidth difference is patrolled greater than single channel
When collecting the bandwidth of tributary signal, the quantity n of logic tributary signal to be deleted is determined according to the bandwidth difference；
According to the preset quantity corresponding relationship of logic tributary signal and light tributary signal, the number of light tributary signal to be deleted is determined
Measure m；
The adjustment module, is specifically also used to:
The road the n logic tributary signal is deleted from the transmission unit；
M light tributary signal corresponding to the road the n logic tributary signal is deleted from light tributary signal group and is updated described
The expense of light tributary signal group；
Close m photon carrier wave corresponding to the m light tributary signal.
9. Bandwidth adjustment device according to claim 6, which is characterized in that
It is described that obtain the current business to be transmitted that module obtains to be include optical channel data transmission unit business and flexible light
The mixed service of at least two-way of tunnel data transport unit business；Or
The current business to be transmitted is to carry the flexible Optical Channel Data Unit-k business of the ether business of 25Gbit/s.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510297302.4A CN106303766B (en) | 2015-06-03 | 2015-06-03 | The method and device of Bandwidth adjustment |
| PCT/CN2016/079740 WO2016192480A1 (en) | 2015-06-03 | 2016-04-20 | Bandwidth adjustment method and device |
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| CN201510297302.4A CN106303766B (en) | 2015-06-03 | 2015-06-03 | The method and device of Bandwidth adjustment |
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| CN108322367B (en) * | 2017-01-16 | 2022-01-14 | 中兴通讯股份有限公司 | Method, equipment and system for service delivery |
| CN109962802A (en) * | 2017-12-26 | 2019-07-02 | 中兴通讯股份有限公司 | Bandwidth adjusting method, device, system, transport plane node and storage medium |
| CN113542933B (en) * | 2020-04-15 | 2023-03-28 | 华为技术有限公司 | Bandwidth adjusting method and related equipment |
| CN112804078B (en) * | 2020-07-23 | 2022-03-18 | 中兴通讯股份有限公司 | Bandwidth adjustment method, service transmission method, network device and readable storage medium |
| CN112202683A (en) * | 2020-09-28 | 2021-01-08 | 普联国际有限公司 | Load adjustment system and method for uplink service |
| CN114866425B (en) * | 2022-03-17 | 2023-12-05 | 北京邮电大学 | Method and device for adjusting bandwidth of optical service unit connection |
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| CN1744448A (en) * | 2004-09-04 | 2006-03-08 | 华为技术有限公司 | Dual-fiber optical multiplexing section sharing protective ring protecting method and its node device |
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| US7602814B2 (en) * | 2007-04-30 | 2009-10-13 | Ciena Corporation | Systems and methods for mapping and multiplexing wider clock tolerance signals in optical transport network transponders and multiplexers |
| CN102624603B (en) * | 2011-01-31 | 2016-09-28 | 中兴通讯股份有限公司 | Obtain ODUflex and connect the method and device of required branch road timeslot number |
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| CN1744448A (en) * | 2004-09-04 | 2006-03-08 | 华为技术有限公司 | Dual-fiber optical multiplexing section sharing protective ring protecting method and its node device |
| CN101267386A (en) * | 2007-03-15 | 2008-09-17 | 华为技术有限公司 | Method, device and system for transmitting multi-channel independent Ethernet data |
| WO2014166077A1 (en) * | 2013-04-10 | 2014-10-16 | 华为技术有限公司 | Method for adjusting line interface rate, and node |
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