CN110351613A - Time slot and grouping mixed transport, transmitting and receiving and exchange method in a kind of optical-fiber network - Google Patents
Time slot and grouping mixed transport, transmitting and receiving and exchange method in a kind of optical-fiber network Download PDFInfo
- Publication number
- CN110351613A CN110351613A CN201910625334.0A CN201910625334A CN110351613A CN 110351613 A CN110351613 A CN 110351613A CN 201910625334 A CN201910625334 A CN 201910625334A CN 110351613 A CN110351613 A CN 110351613A
- Authority
- CN
- China
- Prior art keywords
- optical
- signal
- label
- light
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000003287 optical effect Effects 0.000 claims abstract description 185
- 230000005540 biological transmission Effects 0.000 claims abstract description 111
- 230000000737 periodic effect Effects 0.000 claims abstract description 15
- 238000000605 extraction Methods 0.000 claims description 27
- 239000011159 matrix material Substances 0.000 claims description 25
- 238000003780 insertion Methods 0.000 claims description 21
- 230000037431 insertion Effects 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 16
- 230000001360 synchronised effect Effects 0.000 claims description 8
- 239000000284 extract Substances 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 5
- 238000000354 decomposition reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 9
- 238000004891 communication Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0005—Switch and router aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0005—Switch and router aspects
- H04Q2011/0007—Construction
- H04Q2011/0033—Construction using time division switching
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0077—Labelling aspects, e.g. multiprotocol label switching [MPLS], G-MPLS, MPAS
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses time slot in a kind of optical-fiber network and grouping mixed transport, receive transmission and exchange method, the combination of single wavelength transmission channel in optical fiber or multiple wavelength channels is divided into the transmission cycle of set time length, is made of gap transmission period when light and optical packet transferring period two parts.The gap transmission period in light is used for transmission periodic traffic data and is sent and exchanged using light slot transmission, reception；In the optical packet transferring period, it is used for transmission burst service data and sends and exchange using optical packet transferring, reception.The present invention according in optical-fiber network period and burst service data volume ratio setting transmission cycle when light gap transmission period and optical packet transferring period ratio, realize according to portfolio distribute channel transmission resource.Transmission, transmitting and receiving and exchange while the present invention realizes Single wavelength channel slot in optical-fiber network and is grouped, improve the network throughput in period and burst mixed service, reduce packet loss and time delay.
Description
Technical field
The invention belongs to technical field of optical fiber communication, more specifically, it is mixed to be related to time slot and grouping in a kind of optical-fiber network
It closes transmission, transmit and receive and exchange method.
Background technique
With the development of the emerging technologies such as Internet of Things, cloud computing, 5G communication, the type of service and data volume of optical network bearing
It is skyrocketed through.Optical transport and the mode of electricity exchange are increasingly by electron exchange rate, capacity and energy consumption in conventional optical network
It influences, becomes the bottleneck of development of optical network.The trend for replacing electricity exchange to be development of optical network is exchanged using light, becomes optic communication neck
The research hotspot in domain.
Currently, can be divided into optical wavelength exchange, optical burst swit- ching, optical packet switching and light time gas exchange several for optical switched technology
Kind, in which:
Optical packet switching (Optical Packet Switching, OPS) by the way of being similar to electric packet switch, with
Fixed or elongated light packet carries out independent transmission and exchange, has and supports burst service transmission, and transmission statistic reusability is high
The characteristics of；But the ports competition in the random transmission and exchange process due to light packet, there are certain packet loss and time delay to tremble
It is dynamic, it is unable to satisfy the high periodic traffic communication requirement of requirement of real-time.
Transmission channel is divided into regular length by light time gas exchange (Optical Time Slice Switching, OTSS)
Timeslice distributes to data transmit-receive end, ensure that timeslice is monopolized at data transmit-receive end, is carried out according to the timeslice pre-defined
Exchange, avoids channel competition.(Zhizhen Zhong etc., Evolving optical networks for latency-
sensitive smart-grid communications via optical time slice switching(OTSS)
Technologies, 2017 Opto-Electronics and Communications Conference (OECC) and
Photonics Global Conference(PGC)).The corresponding timeslice of period allocated is generated for the data of periodic traffic, it can
To guarantee the reliability of transmission and the certainty of time delay.But it is distributed and is fixed due to timeslice, the recycling and reassignment consumption of timeslice
When it is longer the problems such as, and make when the timeslice free time, can not be used by other terminals；And time leaf length is fixed, but is sent
It causes transmission idle when data and inconsistent time leaf length or can not once complete to transmit, therefore for burst service, OTSS
Channel utilization it is low.
Simultaneously as OPS needs to identify packets headers/label of each light packet in exchange process, updates, looks into
Look for forwarding table, solve ports competition, as long as and OTSS according to time gas exchange table, realization synchronizes fixed time gas exchange, therefore OPS
There are biggish difference for exchange method and the exchange method of OTSS.Therefore, current optical switching network is single support OPS
Or OTSS, result in the mixed service for being difficult to efficiently carry burst and period simultaneously.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide time slots in a kind of optical-fiber network and grouping mixed transport
Method, sending and receiving methods and exchange method, to realize that the high property of burst and period mixed service is transmitted, transmits and receives and handed over
It changes.
To achieve the above object, the present invention provides time slot and grouping combining transmission method, feature in a kind of optical-fiber network and exists
In, comprising the following steps:
(1), the combination of single wavelength channel or multiple wavelength channels in optical fiber is divided into the biography of set time length
The defeated period, in each period, gap transmission period and optical packet transferring period two parts when being divided into light, wherein in light
The slot transmission period is divided into several isometric time slots, is used for transmission light time slot signal；In the optical packet transferring period for solid
The Stochastic accessing transmissions of fixed or elongated light packet；
(2), entire optical-fiber network uses identical transmission cycle, slot transmission period, grouping transmission period, entire light
Network transmission cycle synchronisation；
(3), gap transmission period transmits when periodic traffic is assigned to light, and burst service is assigned to the optical packet transferring period
Transmission；
(4), the ratio of gap transmission period and optical packet transferring period are equal to the optical-fiber network period when light in transmission cycle
The ratio of business and burst service total amount of data.
The present invention provides time slot and grouping in also a kind of optical-fiber network and mixes sending and receiving methods, which is characterized in that including with
Lower step:
(1), main control module receives the synchronised clock and period assignment signal for carrying out automatic network, and in light, gap transmission period makes
Energy time slot processing module and closing PHM packet handling module, optical label are inserted into module, optical label extraction module, for the cursor of closing
Label insertion module and optical label extraction module, optical signal is transparent to be passed through；The optical packet transferring period enable PHM packet handling module,
Optical label is inserted into module, optical label extraction module and closes time slot processing module；
(2), the business datum for needing to send is divided by service data scheduling module according to periodic traffic and burst service
Cycle data caching and bursty data caching Cun Chu not arrived；In the optical packet transferring period, PHM packet handling module is from bursty data
Bursty data to be sent is extracted in caching and is packaged into payload signal, and driving optical sender generates light payload signal, and according to number
According to destination address, search Label Forwarding Information Base, obtain label signal, and label signal is output to optical label insertion module, light
Payload signal obtains optical packet signal and is sent to optical-fiber network by optical label insertion module insertion optical label (label signal)
In；In the slot transmission period, when time slot processing module is extracted cycle data to be sent and is packaged into from cycle data caching
Gap transmits signal, and optical sender is driven to generate light time slot signal, is sent in optical-fiber network；
(3), need received business datum after optical-fiber network inputs, in the optical packet transferring period, optical-fiber network input
Optical packet signal pass through optical label extraction module separation tags signal and light payload signal, label signal is inputted into packet transaction
Light payload signal is inputted photoreceiver by module, inputs PHM packet handling module by the payload signal that photoreceiver restores,
PHM packet handling module searches Label Forwarding Information Base according to label signal and judges whether payload signal is local reception, for example local reception
Payload signal is then descapsulated into bursty data and is stored in bursty data caching, is started at error of transmission if non-local receive
Reason；The gap transmission period in light, the light time slot signal of optical-fiber network input obtain slot transmission letter after photoreceiver restores
Number, and it is sent to time slot processing module, it is descapsulated into cycle data through time slot processing module, and be stored in cycle data caching；
Service data scheduling module extracts bursty data, cycle data from bursty data caching and cycle data caching, and is sent to
Respective application business.
The present invention provides time slot and grouping mixing and exchanging method in also a kind of optical-fiber network, which is characterized in that including following step
It is rapid:
(1), main control module receives the synchronised clock and period assignment signal for carrying out automatic network, and in light, gap transmission period makes
It can OTSS (light time gas exchange) scheduler module and closing OPS (optical packet switching) scheduler module, optical label extraction module, optical label
It is inserted into module, module is inserted into for the optical label extraction module and optical label of closing, optical signal is transparent to be passed through；In optical packet transferring
Period enables OPS scheduler module, optical label extraction module, optical label insertion module and closes OTSS scheduler module；
(2), the gap transmission period in light, is swapped using OTSS: the optical signal warp from optical-fiber network input optical fibre
It crosses Wave decomposing multiplexer and separates each wavelength channel, OTSS scheduler module is closed according to the port interconnection of time slot each in timeslot scheduling table
System is connected by the port that control signal configures optical switching matrix, and the light time slot signal in each input wavelength channel is by configuring
At optical switching matrix be output to corresponding optical switching matrix output port, by wavelength division multiplexer, light is entered by output optical fibre
Network；
(3), in the optical packet transferring period, swapped using OPS: the optical signal from optical-fiber network input optical fibre passes through
Wave decomposing multiplexer separates each wavelength channel, and each input wavelength light packet is by optical label extraction module separation optical label (mark
Sign signal) and light payload signal, extract label signal input OPS scheduler module, light payload signal input optical switching matrix with
Contention resolved unit, OPS scheduler module search Label Forwarding Information Base and obtain the defeated of each grouping according to the label information of each input wavelength
Exit port and output optical label (label information), the port interconnection relationship of decision optical switching matrix configure light by control signal
The port of switching matrix connects, and sends optical label insertion module for optical label (label information)；The light payload signal of input passes through
It crosses the optical switching matrix that configuration is completed and is output to corresponding optical switching matrix output port, module is inserted by optical label and adds light
Label signal forms new optical packet signal, and new optical packet signal enters optical-fiber network by wavelength division multiplexer and output optical fibre.
The object of the present invention is achieved like this.
Time slot and grouping mixed transport, transmitting and receiving and exchange method in optical-fiber network of the present invention, using will in optical fiber it is single
The combination of wavelength transmission channel or multiple wavelength channels is divided into the transmission cycle of set time length, in each transmission cycle
It is made of gap transmission period when light and optical packet transferring period two parts.In light, gap transmission period, is used for transmission week
Phase business datum and use light slot transmission, transmitting and receiving and exchange；In the optical packet transferring period, it is used for transmission burst service
Data and use optical packet transferring, transmitting and receiving and exchange.The present invention is according to optical-fiber network period and burst service data volume ratio
The ratio of gap transmission period and optical packet transferring period when light in transmission cycle is arranged realizes to be distributed according to portfolio and believe
Channel transmission resource.The network edge node that the present invention designs realizes time slot and is grouped mixed transmitting and receiving, present invention design
Network switching node realize the hybrid switching of light time gas exchange and optical packet switching.The present invention realizes unicast in optical-fiber network
Transmission, transmitting and receiving and exchange while long-channel time slot and grouping, the network for improving period and the mixed service that happens suddenly gulp down
The amount of spitting reduces packet loss and time delay.
Detailed description of the invention
Fig. 1 is time slot and a kind of grouping specific embodiment schematic diagram of combining transmission method in optical-fiber network of the present invention；
Fig. 2 is time slot and a kind of grouping mixing specific embodiment schematic diagram of sending and receiving methods in optical-fiber network of the present invention；
Fig. 3 is time slot and a kind of grouping specific embodiment schematic diagram of mixing and exchanging method in optical-fiber network of the present invention；
Fig. 4 is subcarrier label light packet spectrogram；
Fig. 5 is optical label insertion schematic diagram；
Fig. 6 is that optical label extracts schematic diagram；
Fig. 7 is the exchange example schematic diagram of time slot and grouping mixed signal.
Specific embodiment
A specific embodiment of the invention is described with reference to the accompanying drawing, preferably so as to those skilled in the art
Understand the present invention.Requiring particular attention is that in the following description, when known function and the detailed description of design perhaps
When can desalinate main contents of the invention, these descriptions will be ignored herein.
Fig. 1 is time slot and a kind of grouping specific embodiment schematic diagram of combining transmission method in optical-fiber network of the present invention.
In the present embodiment, as shown in Figure 1, time slot and grouping combining transmission method include following step in optical-fiber network of the present invention
It is rapid:
Step S1: by the single wavelength (λ in optical fiberi) channel or multiple wavelength channel (λi,...λi+k) combination be divided into
The transmission cycle of set time length, in each period, gap transmission period and optical packet transferring period when being divided into light
Two parts, wherein the gap transmission period in light is divided into several isometric time slots (gap when light), is used for transmission light time slot signal；
In Stochastic accessing transmissions of the optical packet transferring period for fixed or elongated light packet；
Step S2: entire optical-fiber network is whole using identical transmission cycle, slot transmission period, grouping transmission period
A optical-fiber network transmission cycle is synchronous；
Step S3: gap transmission period transmits when periodic traffic is assigned to light, when burst service is assigned to optical packet transferring
Between section transmit；
Step S4: the ratio of gap transmission period and optical packet transferring period are equal to optical-fiber network week when light in transmission cycle
The ratio of phase business and burst service total amount of data.
Fig. 2 is time slot and a kind of grouping mixing specific embodiment schematic diagram of sending and receiving methods in optical-fiber network of the present invention.
In the present embodiment, as shown in Fig. 2, in optical-fiber network of the present invention time slot and grouping mixing sending and receiving methods include with
Lower step:
Step S1: main control module receives the synchronised clock and period assignment signal for carrying out automatic network, the gap transmission time in light
The enabled time slot processing module of section and closing PHM packet handling module, optical label are inserted into module, optical label extraction module, for closing
Optical label is inserted into module and optical label extraction module, and optical signal is transparent to be passed through；Packet transaction is enabled in the optical packet transferring period
Module, optical label insertion module, optical label extraction module and closing time slot processing module；
Step S2: the business datum for needing to send passes through service data scheduling module, according to periodic traffic and burst service,
It is respectively stored into cycle data caching and bursty data caching；In the optical packet transferring period, PHM packet handling module is from burst number
Payload signal is packaged into according to bursty data to be sent is extracted in caching, driving optical sender generates light payload signal, and according to
The destination address of data searches Label Forwarding Information Base, obtains label signal, and label signal is output to optical label insertion module,
Light payload signal obtains optical packet signal and is sent to optical-fiber network by optical label insertion module insertion optical label (label signal)
In；In the slot transmission period, when time slot processing module is extracted cycle data to be sent and is packaged into from cycle data caching
Gap transmits signal, and optical sender is driven to generate light time slot signal, is sent in optical-fiber network；
Step S3: needing received business datum after optical-fiber network inputs, and in the optical packet transferring period, optical-fiber network is defeated
The optical packet signal entered passes through optical label extraction module separation tags signal and light payload signal, and label signal is inputted at grouping
Module is managed, light payload signal is inputted into photoreceiver, inputs packet transaction mould by the payload signal that photoreceiver restores
Block, PHM packet handling module search Label Forwarding Information Base according to label signal and judge whether payload signal is local reception, for example locally
Payload signal is then descapsulated into bursty data and is stored in bursty data caching by reception, and it is wrong to start transmission if non-local receive
Accidentally handle；The gap transmission period in light, the light time slot signal of optical-fiber network input obtain time slot biography after photoreceiver restores
Defeated signal, and it is sent to time slot processing module, it is descapsulated into cycle data through time slot processing module, and be stored in cycle data caching
In；Service data scheduling module extracts bursty data, cycle data from bursty data caching and cycle data caching, and sends
To respective application business.
Fig. 3 is time slot and a kind of grouping specific embodiment schematic diagram of mixing and exchanging method in optical-fiber network of the present invention.
In the present embodiment, as shown in figure 3, time slot and grouping mixing and exchanging method include following step in optical-fiber network of the present invention
It is rapid:
Step S1: main control module receives the synchronised clock and period assignment signal for carrying out automatic network, the gap transmission time in light
Section enables OTSS (light time gas exchange) scheduler module and closes OPS (optical packet switching) scheduler module, optical label extraction module, light
Tag insertion module is inserted into module for the optical label extraction module and optical label of closing, and optical signal is transparent to be passed through；In light packet
Transmission period enables OPS scheduler module, optical label extraction module, optical label insertion module and closes OTSS scheduler module；
Step S2: the gap transmission period in light is swapped: the optical signal from optical-fiber network input optical fibre using OTSS
Each wavelength channel is separated by Wave decomposing multiplexer, and OTSS scheduler module is according to the port interconnection of time slot each in timeslot scheduling table
Relationship is connected by the port that control signal configures optical switching matrix, and the light time slot signal in each input wavelength channel is by configuration
The optical switching matrix of completion is output to corresponding optical switching matrix output port and is entered by wavelength division multiplexer by output optical fibre
Optical-fiber network；
Step S3: it in the optical packet transferring period, is swapped using OPS: the optical signal from optical-fiber network input optical fibre
Each wavelength channel is separated by Wave decomposing multiplexer, each input wavelength light packet separates optical label by optical label extraction module
(label signal) and light payload signal, extracts label signal input OPS scheduler module, and light payload signal inputs optical switching matrix
With contention resolved unit, OPS scheduler module searches Label Forwarding Information Base and obtains each grouping according to the label information of each input wavelength
Output port and output optical label (label information), the port interconnection relationship of decision optical switching matrix pass through control signal configuration
The port of optical switching matrix connects, and sends optical label insertion module for optical label (label information)；The light payload signal of input
It is output to corresponding optical switching matrix output port by the optical switching matrix that configuration is completed, module addition is inserted by optical label
Optical label signal forms new optical packet signal, and new optical packet signal enters light net by wavelength division multiplexer and output optical fibre
Network.
Assuming that the periodic traffic accounting 60% of certain optical-fiber network, burst service accounting 40% are designed.
The size of one transmission cycle is set.The maximum delay time that the size of transmission cycle can be tolerated according to business
It is configured, transmission cycle is arranged is less than business maximum delay time, it is assumed that is set as 1ms.
1), the ratio of slot transmission period and grouping transmission period is equal to period and burst industry in a transmission cycle
The ratio of business, therefore, slot transmission period are 600 μ s, and grouping transmission period is 400 μ s.It is located at the slot transmission period
In be divided into 100 time slots, then each time slot size be 6 μ s.
2), according to the bandwidth demand of each periodic traffic source to destination, network routing and link bandwidth assignment are completed.Root
The link bandwidth assignment transmission time slot occupied according to each periodic traffic.Since the slot transmission period accounts for total link bandwidth 60%, contain
There are 100 time slots, therefore, the link bandwidth of each Time Slot Occupancy is 0.6%.If certain periodic traffic needs to occupy 1% bandwidth,
It then needs for two time slots of the traffic assignments, the periodic traffic is fixed to send data using the two time slots.Burst service is dividing
It can be sent at random in group transmission period.
3), time slot and grouping mixed signal send and receive and implement according to fig. 2, wherein bursty data caching and periodicity
It is adopted as the setting transmission queue of each transmission services according to caching, to support sending and receiving for repeating query or priority.
Assuming that optical packet signal uses subcarrier label format, i.e. optical label is modulated using subcarrier, and payload uses base band
Modulation, the two spectrally separate, as shown in Figure 4.According to subcarrier label optical packet format, the optical label of design is inserted into module
As shown in figure 5, the label signal of input is used frequency fscMicrowave signal be modulated generate subcarrier label signal, in turn
It is f by light modulator modulates to frequency0Light wave on, it is defeated after finally being coupled with light payload signal by 2 × 1 photo-couplers
Out, the optical packet signal of subcarrier label is formed.The design of optical label extraction module is as shown in fig. 6, net using optical label and light
The characteristic that lotus separates on frequency spectrum separates optical label using optical filter, and optical label signal is converted to electric label by optical detection
The function that fiber bragg grating (FBG) realizes optical filter can be used in specific implementation for signal.
Light time slot signal uses frequency of light wave identical as light payload signal and baseband modulation, it is ensured that transparent passes through light
Tag insertion module and optical label extraction module.
The exchange of time slot and grouping mixed signal is implemented using Fig. 3.Optical switching matrix requires to use quotient according to exchange velocity
It is realized with M × M photoswitch, contention resolved unit uses existing fiber delay line (FDL), wavelength convert and penetrates route technology reality partially
It is existing.The function of exchange example of time slot and grouping mixed signal is as shown in fig. 7, light packet P1 and P2 is completed in grouping transmission period
Port exchange, gap T1, T2 and T3 is exchanged in slot transmission period completing port when light.
Although the illustrative specific embodiment of the present invention is described above, in order to the technology of the art
Personnel understand the present invention, it should be apparent that the present invention is not limited to the range of specific embodiment, to the common skill of the art
For art personnel, if various change the attached claims limit and determine the spirit and scope of the present invention in, these
Variation is it will be apparent that all utilize the innovation and creation of present inventive concept in the column of protection.
Claims (3)
1. time slot and grouping combining transmission method in a kind of optical-fiber network, which comprises the following steps:
(1), the combination of single wavelength channel or multiple wavelength channels in optical fiber is divided into the transmission week of set time length
Phase, in each period, gap transmission period and optical packet transferring period two parts when being divided into light, wherein the gap in light
Transmission period is divided into several isometric time slots, is used for transmission light time slot signal；The optical packet transferring period for fixed or
The Stochastic accessing transmissions of elongated light packet；
(2), entire optical-fiber network uses identical transmission cycle, slot transmission period, grouping transmission period, entire optical-fiber network
Transmission cycle is synchronous；
(3), gap transmission period transmits when periodic traffic is assigned to light, and burst service is assigned to optical packet transferring period biography
It is defeated；
(4), the ratio of gap transmission period and optical packet transferring period are equal to optical-fiber network periodic traffic when light in transmission cycle
With the ratio of burst service total amount of data.
2. time slot and grouping mixing sending and receiving methods in a kind of optical-fiber network, which comprises the following steps:
(1), main control module receives the synchronised clock and period assignment signal for carrying out automatic network, when in light, gap transmission period is enabled
Gap processing module and closing PHM packet handling module, optical label are inserted into module, optical label extraction module, and the optical label of closing is inserted
Enter module and optical label extraction module, optical signal is transparent to be passed through；PHM packet handling module, cursor are enabled in the optical packet transferring period
Label insertion module, optical label extraction module and closing time slot processing module；
(2), the business datum sent is needed to be deposited respectively by service data scheduling module according to periodic traffic and burst service
Store up cycle data caching and bursty data caching；In the optical packet transferring period, PHM packet handling module is cached from bursty data
Middle extraction bursty data to be sent is packaged into payload signal, and driving optical sender generates light payload signal, and according to data
Destination address searches Label Forwarding Information Base, obtains label signal, and label signal is output to optical label insertion module, light payload
Signal obtains optical packet signal and is sent in optical-fiber network by optical label insertion module insertion optical label (label signal)；?
Slot transmission period, time slot processing module extract cycle data to be sent from cycle data caching and are packaged into slot transmission
Signal, and optical sender is driven to generate light time slot signal, it is sent in optical-fiber network；
(3), need received business datum after optical-fiber network inputs, in the optical packet transferring period, the light of optical-fiber network input
Packet signal passes through optical label extraction module separation tags signal and light payload signal, and label signal is inputted packet transaction mould
Light payload signal is inputted photoreceiver by block, inputs PHM packet handling module by the payload signal that photoreceiver restores, point
Group processing module searches Label Forwarding Information Base according to label signal and judges whether payload signal is local reception, and for example local reception is then
Payload signal is descapsulated into bursty data and is stored in bursty data caching, is started at error of transmission if non-local receive
Reason；The gap transmission period in light, the light time slot signal of optical-fiber network input obtain slot transmission letter after photoreceiver restores
Number, and it is sent to time slot processing module, it is descapsulated into cycle data through time slot processing module, and be stored in cycle data caching；
Service data scheduling module extracts bursty data, cycle data from bursty data caching and cycle data caching, and is sent to
Respective application business.
3. time slot and grouping mixing and exchanging method in a kind of optical-fiber network, which comprises the following steps:
(1), main control module receives the synchronised clock and period assignment signal for carrying out automatic network, and in light, gap transmission period is enabled
OTSS (light time gas exchange) scheduler module and closing OPS (optical packet switching) scheduler module, optical label extraction module, optical label are inserted
Enter module, module is inserted into for the optical label extraction module and optical label of closing, optical signal is transparent to be passed through；In optical packet transferring
Between section enable OPS scheduler module, optical label extraction module, optical label insertion module and close OTSS scheduler module；
(2), the gap transmission period in light, is swapped using OTSS: the optical signal from optical-fiber network input optical fibre passes through wave
Decomposition multiplex device separates each wavelength channel, OTSS scheduler module according to the port interconnection relationship of time slot each in timeslot scheduling table,
The port connection of optical switching matrix is configured by control signal, what the light time slot signal in each input wavelength channel was completed by configuration
Optical switching matrix is output to corresponding optical switching matrix output port, by wavelength division multiplexer, enters optical-fiber network by output optical fibre；
(3), in the optical packet transferring period, swapped using OPS: the optical signal from optical-fiber network input optical fibre passes through wavelength-division
Demultiplexer separates each wavelength channel, and each input wavelength light packet is by optical label extraction module separation optical label (label letter
Number) and light payload signal, label signal input OPS scheduler module is extracted, light payload signal inputs optical switching matrix and competition
Unit is solved, OPS scheduler module searches the output end that Label Forwarding Information Base obtains each grouping according to the label information of each input wavelength
Mouth and output optical label (label information), the port interconnection relationship of decision optical switching matrix pass through control signal configuration light and exchange
The port of matrix connects, and sends optical label insertion module for optical label (label information)；The light payload signal of input is by matching
The optical switching matrix for setting completion is output to corresponding optical switching matrix output port, is inserted into module by optical label and adds optical label
Signal forms new optical packet signal, and new optical packet signal enters optical-fiber network by wavelength division multiplexer and output optical fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910625334.0A CN110351613B (en) | 2019-07-11 | 2019-07-11 | Time slot and packet mixed transmission, sending, receiving and switching method in optical network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910625334.0A CN110351613B (en) | 2019-07-11 | 2019-07-11 | Time slot and packet mixed transmission, sending, receiving and switching method in optical network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110351613A true CN110351613A (en) | 2019-10-18 |
| CN110351613B CN110351613B (en) | 2021-06-04 |
Family
ID=68175054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910625334.0A Expired - Fee Related CN110351613B (en) | 2019-07-11 | 2019-07-11 | Time slot and packet mixed transmission, sending, receiving and switching method in optical network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110351613B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111010627A (en) * | 2019-11-25 | 2020-04-14 | 北京邮电大学 | Route distribution method and device applied to mixed grid optical network |
| CN116887083A (en) * | 2023-09-07 | 2023-10-13 | 武汉长光科技有限公司 | Wavelength selection method and device, optical Network Unit (ONU) and electronic equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107343231A (en) * | 2017-09-04 | 2017-11-10 | 南京曦光信息科技有限公司 | Asymmetric caching and forwarding module and the Packet Switch Node and network that are made from it |
-
2019
- 2019-07-11 CN CN201910625334.0A patent/CN110351613B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107343231A (en) * | 2017-09-04 | 2017-11-10 | 南京曦光信息科技有限公司 | Asymmetric caching and forwarding module and the Packet Switch Node and network that are made from it |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111010627A (en) * | 2019-11-25 | 2020-04-14 | 北京邮电大学 | Route distribution method and device applied to mixed grid optical network |
| CN116887083A (en) * | 2023-09-07 | 2023-10-13 | 武汉长光科技有限公司 | Wavelength selection method and device, optical Network Unit (ONU) and electronic equipment |
| CN116887083B (en) * | 2023-09-07 | 2023-12-15 | 武汉长光科技有限公司 | Wavelength selection method and device, optical Network Unit (ONU) and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110351613B (en) | 2021-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Huang et al. | 5G-oriented optical underlay network slicing technology and challenges | |
| US5351146A (en) | All-optical network architecture | |
| KR100889899B1 (en) | Multiple bit rate optical communication method, optical network unit and optical line terminal | |
| JP2777194B2 (en) | Optical transmission system | |
| CN106233672A (en) | Optical switching system and method | |
| Cheng et al. | POTORI: a passive optical top-of-rack interconnect architecture for data centers | |
| EP2744135B1 (en) | Optical access network having emitter-free customer premise equipment and adaptive communication scheduling | |
| CN113973239B (en) | Method, device, optical network unit, optical line terminal and medium for communication | |
| Fiorani et al. | Performance and power consumption analysis of a hybrid optical core node | |
| WO2014120753A1 (en) | Switching for a mimo-ofdm based flexible rate intra-data center network | |
| Kani et al. | Future optical access network enabled by modularization and softwarization of access and transmission functions | |
| CN102231864B (en) | Optical-codeword-label-based optical packet multicast transmission and receiving methods and devices | |
| CN110351613A (en) | Time slot and grouping mixed transport, transmitting and receiving and exchange method in a kind of optical-fiber network | |
| Argibay-Losada et al. | Optical packet switching and optical burst switching | |
| CN103716721A (en) | Method and system for providing an external optical data packet to a destination node of a packet optical network | |
| CN101677416A (en) | Method and system for packing and unpacking ultra-high-speed optical burst switching network | |
| CN1592302A (en) | Method for realizing passive light network running and managing | |
| CN102299866B (en) | Optical packet switching method and node aggregation device based on optical time division multiplexing technology | |
| Gidron et al. | TeraNet: a multigigabit-per-second hybrid circuit/packet-switched lightwave network | |
| KR101069977B1 (en) | Communication device and communication method | |
| Hatano et al. | Standardization and technology trends in optical, wireless and virtualized access systems | |
| US20130156429A1 (en) | Optical-electrical switching node | |
| Kozák | Efficient control routing and wavelength assignment in loss-less optical burst switching networks | |
| CN107333190A (en) | A kind of photoelectricity hybrid switching structure of variable granularity | |
| CN102742229B (en) | Data transfer method, node and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210604 |