CN107231191A - One kind is based on the asymmetrical elastic optical network receive-transmit system of flow - Google Patents
One kind is based on the asymmetrical elastic optical network receive-transmit system of flow Download PDFInfo
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- CN107231191A CN107231191A CN201710612211.4A CN201710612211A CN107231191A CN 107231191 A CN107231191 A CN 107231191A CN 201710612211 A CN201710612211 A CN 201710612211A CN 107231191 A CN107231191 A CN 107231191A
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- node
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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
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/112—Line-of-sight transmission over an extended range
- H04B10/1123—Bidirectional transmission
-
- 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
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/1143—Bidirectional transmission
-
- 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
- H04B10/2589—Bidirectional transmission
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The asymmetrical elastic optical network receive-transmit system of flow is based on the invention discloses one kind, including some group nodes pair are constituted between several network nodes, and network node；The opposite up-link of flow transmission direction and downlink are included between per group node pair；Several transmitter and receivers are set on the source node and destination node of traffic demand respectively in every group node pair according to up-link and downlink；It is separate between the transmitter and receiver set on same network node.The present invention carries out flow transmission using separate transmitter and receiver, it is to avoid the waste of Internet resources caused by integrated transceiver.
Description
Technical field
It is more particularly to a kind of to be received based on the asymmetrical elastic optical network of flow the present invention relates to flow transmission technique field
Hair system.
Background technology
With the development of the technologies such as cloud computing, Global Internet flow is increased rapidly, and these flows are often two-way
Asymmetrical, i.e., the traffic demand with downstream transmission between a pair of nodes is unequal.
However, current almost all of network is all designed to bi-directional symmetrical transmission flow, i.e., in uplink and downlink two
On direction, identical network capacity is provided on each link or between each node pair, this can cause a large amount of Internet resources (examples
Such as link capacity) waste.
Simultaneously as traditional transceiver generally comprises a pair of transmitter and receivers, and it is mainly used in two-way
The communication of symmetrical traffic demand.In this case, when the traffic demand of up-downgoing is not waited, then the transmitting on direction all the way is had
The quantity of machine or receiver exceeds demand, causes the quantity of emitter or receiver to waste, and improves network cost.
Therefore, how to provide it is a kind of can reduce network resources waste based on the transmitting-receiving of flow asymmetrical elastic optical network
System is the problem of those skilled in the art need solution at present.
The content of the invention
The asymmetrical elastic optical network receive-transmit system of flow is based on it is an object of the invention to provide one kind, using separate
Transmitter and receiver carry out flow transmission, it is to avoid the waste of Internet resources caused by integrated transceiver.
In order to solve the above technical problems, the invention provides one kind based on the asymmetrical elastic optical network transmitting-receiving system of flow
System, including some group nodes pair are constituted between several network nodes, and the network node；
The opposite up-link of flow transmission direction and downlink are included between node pair described in every group；
The source section of traffic demand respectively in node pair described in every group according to the up-link and the downlink
Several transmitter and receivers are set in point and destination node；
It is separate between the transmitter and receiver set on the same network node.
Preferably, the transmitter and receiver number set on the same network node is different.
Preferably, the emitter includes：
Multiple separate tunable laser arrays.
Preferably, the emitter includes：
Integrated tunable lasing light emitter, modulator and the wave filter of multiple subcarriers are produced simultaneously；
Wherein, it is used as the hair after the output end of the integrated tunable lasing light emitter passes through series connection modulator and wave filter
Penetrate the output end of machine.
Preferably, the modulator is specially dual drive Mach-Zehnder modulators.
Preferably, the modulation format between each pair emitter and receiver is any of BPSK, QPSK, 8-QAM.
The asymmetrical elastic optical network receive-transmit system of flow, including some group nodes pair are based on the invention provides one kind；
Two nodes per group node pair according to the traffic demand of up-link and downlink be respectively arranged with several emitters and
Receiver；It is separate between the transmitter and receiver set on the same network node.It can be seen that, it is of the invention by tradition
Transceiver be separated into independent transmitter and receiver, and per group node pair between the corresponding transmitting-receiving of up-link that sets
The quantity of the quantity of machine pair transceiver pair corresponding with downlink is set according to traffic demand, and both need not be equal；For example,
Up-link sets No. 3 transceivers pair, and downlink sets No. 1 transceiver pair；The flow in uplink downlink is so caused to need
In the case of seeking difference, appropriate number of transmitter and receiver is set according to demand, in the case of traffic demand is asymmetric,
Avoid the waste of the excessive caused link capacity of the quantity of emitter or receiver and cost.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to institute in prior art and embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is that the transceiver between a current group node pair sets schematic diagram；
Fig. 2 is based in the asymmetrical elastic optical network receive-transmit system of flow between a group node pair for one kind that the present invention is provided
Transceiver set schematic diagram.
Embodiment
The core of the present invention is to provide one kind and is based on the asymmetrical elastic optical network receive-transmit system of flow, using separate
Transmitter and receiver carry out flow transmission, it is to avoid the waste of Internet resources caused by integrated transceiver.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The asymmetrical elastic optical network receive-transmit system of flow, including several network sections are based on the invention provides one kind
Point, and some group nodes pair are constituted between network node；
The opposite up-link of flow transmission direction and downlink are included between per group node pair；
The source section of traffic demand respectively in node pair described in every group according to the up-link and the downlink
Several transmitter and receivers are set in point and destination node；
It is separate between the transmitter and receiver set on same network node.
It should be noted that the present invention is when uplink downlink traffic demand is different, up-link and downlink
The quantity of the transceiver pair of setting is usually transmitter and receivers that are different, i.e., now being set on same network node
Number it is different (unless due to cause specific result in the need for setting transceiver more than quantity required to).But in uplink downlink flow
When demand is identical (i.e. flow is symmetrical), the quantity for the transceiver pair that up-link and downlink are set is identical.This
Invention substantially increases the flexibility of transmitter and receiver setting by the way that emitter is separate with receiver.
Referring to shown in Fig. 1 and Fig. 2, Fig. 1 is that the transceiver between a current group node pair sets schematic diagram；Fig. 2 is the present invention
Transceiver in a kind of asymmetrical elastic optical network receive-transmit system based on flow provided between a group node pair sets schematic diagram.
Wherein, Tx represents emitter, and Rx represents receiver.
Assuming that the traffic demand of up-link (A-B) needs to set 3 pairs of transceivers pair, and the flow of downlink (B-A)
Demand only needs to set 1 pair of transceiver pair, then needs to be set to Fig. 1 structure with traditional transceiver, be now provided with A nodes
3 emitters and 3 receivers, B node are same.And the present invention could be arranged to Fig. 2 structure, now 3 are provided with A nodes
3 receivers and 1 emitter are provided with individual emitter and 1 receiver, B node.
It can be seen that, in the above-described embodiments, structure of the invention can set 2 receivers and 2 emitters less, subtract significantly
Lack setup cost, and avoid the waste of the resources such as link capacity.
Preferably, emitter includes：
Multiple separate tunable laser arrays.
It is understood that in tunable laser array, each laser is independent, can freely be adjusted
Any spectrum.Under this structure, multiple subcarriers of same emitter transmitting do not need frequency spectrum continuous.The framework is referred to as list
Wavelength (SW) source.
In another embodiment, emitter includes：
Integrated tunable lasing light emitter, modulator and the wave filter of multiple subcarriers are produced simultaneously；
Wherein, the defeated of emitter is used as after the output end of integrated tunable lasing light emitter passes through series connection modulator and wave filter
Go out end.
It is understood that integrated tunable lasing light emitter, modulator and wave filter collectively constitute broadband multi-wavelength (MW)
Source, the MW sources produce multiple subcarriers from single laser, and the subcarrier of these generations is fixed together by frequency spectrum, it means that
They are that frequency spectrum is adjacent, and the centre frequency in adjustment MW sources will be such that all subcarriers move together.
Wherein, modulator is specially dual drive Mach-Zehnder modulators (DD-MZM).
In addition, modulation format between each pair emitter and receiver for BPSK (Binary Phase ShiftKeying,
Binary phase shift keying), QPSK (Quadrature Phase Shift Keying, QPSK), 8-QAM (8-
Any of Quadrature Amplitude Modulation, 8 sampling point quadrature amplitude modulations).
Further, under asymmetric traffic demand scene, to based on the asymmetrical elastic optical network receive-transmit system of flow
Route and frequency spectrum distribution (RSA) problem when being estimated, can be using ILP (integral linear programming) models or based on SWP
The heuritic approach of (spectral window plane), certainly, the present invention are not especially limited to this.
The asymmetrical elastic optical network receive-transmit system of flow, including some group nodes pair are based on the invention provides one kind；
Two nodes per group node pair according to the traffic demand of up-link and downlink be respectively arranged with several emitters and
Receiver；It is separate between the transmitter and receiver set on the same network node.It can be seen that, it is of the invention by tradition
Transceiver be separated into independent transmitter and receiver, and per group node pair between the corresponding transmitting-receiving of up-link that sets
The quantity of the quantity of machine pair transceiver pair corresponding with downlink is set according to traffic demand, and both need not be equal；For example,
Up-link sets No. 3 transceivers pair, and downlink sets No. 1 transceiver pair；The flow in uplink downlink is so caused to need
In the case of seeking difference, appropriate number of transmitter and receiver is set according to demand, in the case of traffic demand is asymmetric,
Avoid the waste of the excessive caused link capacity of the quantity of emitter or receiver and cost.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.For device disclosed in embodiment
For, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is said referring to method part
It is bright.
It should also be noted that, in this manual, term " comprising ", "comprising" or its any other variant are intended to contain
Lid nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (6)
1. one kind is based on the asymmetrical elastic optical network receive-transmit system of flow, it is characterised in that including several network nodes, and
Some group nodes pair are constituted between the network node；
The opposite up-link of flow transmission direction and downlink are included between node pair described in every group；
The source node of traffic demand respectively in node pair described in every group according to the up-link and the downlink and
Several transmitter and receivers are set in destination node；
It is separate between the transmitter and receiver set on the same network node.
2. system according to claim 1, it is characterised in that the emitter that is set on the same network node and connect
Receipts machine number is different.
3. system according to claim 1 or 2, it is characterised in that the emitter includes：
Multiple separate tunable laser arrays.
4. system according to claim 1 or 2, it is characterised in that the emitter includes：
Integrated tunable lasing light emitter, modulator and the wave filter of multiple subcarriers are produced simultaneously；
Wherein, it is used as the emitter after the output end of the integrated tunable lasing light emitter passes through series connection modulator and wave filter
Output end.
5. system according to claim 4, it is characterised in that the modulator is specially that dual drive Mach-Zehnder is adjusted
Device processed.
6. the system according to any one of claim 1 or 2, it is characterised in that the tune between each pair emitter and receiver
Form processed is any of BPSK, QPSK, 8-QAM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710612211.4A CN107231191B (en) | 2017-07-25 | 2017-07-25 | One kind being based on the asymmetrical elastic optical network receive-transmit system of flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710612211.4A CN107231191B (en) | 2017-07-25 | 2017-07-25 | One kind being based on the asymmetrical elastic optical network receive-transmit system of flow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107231191A true CN107231191A (en) | 2017-10-03 |
| CN107231191B CN107231191B (en) | 2019-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710612211.4A Active CN107231191B (en) | 2017-07-25 | 2017-07-25 | One kind being based on the asymmetrical elastic optical network receive-transmit system of flow |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959528A (en) * | 2017-12-13 | 2018-04-24 | 苏州大学 | The network plan method and network of multi-core optical fiber network traffics asymmetric traffic transmission |
| CN108810672A (en) * | 2018-05-20 | 2018-11-13 | 北京工业大学 | A kind of optical-fiber network modulation format and frequency spectrum resource asymmetric distribution method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003124894A (en) * | 2001-10-16 | 2003-04-25 | Photonixnet Corp | Optical transmitter-receiver and optical communication network |
| CN1551549A (en) * | 2003-05-05 | 2004-12-01 | ���Ͽع�����˾ | Network element for use in an optical communication network |
| CN101374359A (en) * | 2008-09-20 | 2009-02-25 | 青岛海信宽带多媒体技术股份有限公司 | Light transmit-receive integrated module for myriad million light line terminal |
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2017
- 2017-07-25 CN CN201710612211.4A patent/CN107231191B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003124894A (en) * | 2001-10-16 | 2003-04-25 | Photonixnet Corp | Optical transmitter-receiver and optical communication network |
| CN1551549A (en) * | 2003-05-05 | 2004-12-01 | ���Ͽع�����˾ | Network element for use in an optical communication network |
| CN101374359A (en) * | 2008-09-20 | 2009-02-25 | 青岛海信宽带多媒体技术股份有限公司 | Light transmit-receive integrated module for myriad million light line terminal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959528A (en) * | 2017-12-13 | 2018-04-24 | 苏州大学 | The network plan method and network of multi-core optical fiber network traffics asymmetric traffic transmission |
| CN108810672A (en) * | 2018-05-20 | 2018-11-13 | 北京工业大学 | A kind of optical-fiber network modulation format and frequency spectrum resource asymmetric distribution method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107231191B (en) | 2019-09-27 |
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