CN101141224B - ROADM system and wavelength selecting method and device - Google Patents
ROADM system and wavelength selecting method and device Download PDFInfo
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- CN101141224B CN101141224B CN2007101754773A CN200710175477A CN101141224B CN 101141224 B CN101141224 B CN 101141224B CN 2007101754773 A CN2007101754773 A CN 2007101754773A CN 200710175477 A CN200710175477 A CN 200710175477A CN 101141224 B CN101141224 B CN 101141224B
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Abstract
The utility model discloses a ROADM system and a wavelength selection method and device. The wavelength selection device comprises a control device, at least two terminal stations, at least two repeater stations and at least two wave selectors. The method comprises step 1: the control device can obtain the traffic volume from the terminal stations and the repeater stations as well as gain the port attribute of the wave selector and the loaded traffic volume thereof on the basis of the traffic volume as per stated above; step 2: based on the port attribute and the loaded traffic control, the control device can control the wave selector to conduct the port attribute configuring and operational wavelength allocation. As compared with the existing technology, the utility model improves the re-use rate of the WSS port, so as to dynamically control the gradually added traffic. Also, based on the size of traffic volume, the assignation of WSS port attribute can be automatically completed, so as to lower the cost of ROADM system.
Description
Technical field
The present invention relates to DWDM (Dense Wavelength Division Multiplexing; Dense wave division multipurpose) technology; Particularly relate to a kind of ROADM (Reconfigurable Optical Add-dropMultiplexer, ROADM) system and Wavelength selecting method thereof.
Background technology
Along with the development of DWDM technology, network more flexible and reconfigurability are required to become more and more important.Under this background, ROADM or WSS (Wavelength-Selective Switch, wavelength-selective switches) device becomes a kind of new technology that everybody competitively uses.ROADM is as the core devices of this technical scheme; Its autgmentability and reconfigurability are the strongest, but its inferior position on cost has limited its development speed, therefore; A lot of operators transfer lower PLC (the Plain Lightwave Circuit of use cost; Planar lightwave circuit) or the solution of WB (Wavelength Blocker, wavelength blocking-up module), but the flexibility of obviously having sacrificed system again like this.
Fig. 1 has described the use figure of traditional WSS device application in the ROADM system; From Fig. 1, can know; The port attribute of each WSS device 11 all is set at down the road attribute; Set out on a journey and realize in the rear end of WSS device 11 (light direction EXT OUT) through wave multiplexer spare 12, the wave multiplexer spare 12 that here adopts is the wave multiplexer spare that 8 ripples are combined into 1 ripple.
The problem that the ROADM system of said structure exists is:
1) number of wavelengths of setting out on a journey is generally determined by the port number of wave multiplexer spare;
2) port utilization ratio of WSS device is low, might can not get using by most ports;
3) can't smooth excessiveness to full automatic ROADM system.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of ROADM system and Wavelength selecting method and device thereof, is used for according to the automatic attribute of road up and down of selecting to be provided with WSS device port of the size of traffic carrying capacity.
To achieve these goals; The invention provides a kind of Wavelength selecting method; Be used to comprise the ROADM system of wavelength selection system; This wavelength selection system comprises control device, at least two point of termination station, at least two relay and at least two wavelength selector spares, it is characterized in that this method comprises:
Step 1, obtain by said control device said point of termination station and said relay business traffic carrying capacity and obtain port attribute and institute's loaded service amount of said wavelength selector spare according to said traffic carrying capacity;
Step 2 is controlled according to said port attribute and institute's loaded service amount by said control device that said wavelength selector spare carries out the port attribute setting and service wavelength is distributed.
The medium wavelength system of selection of described ROADM system, wherein, in the said step 1, said business comprises the business of setting out on a journey, the road is professional down, said traffic carrying capacity comprises the traffic carrying capacity of setting out on a journey, road traffic carrying capacity down.
The medium wavelength system of selection of described ROADM system wherein, in the said step 2, further comprises: determine whether that according to traffic carrying capacity needs launch the step of reusing port of wavelength selector spare by said control device.
The medium wavelength system of selection of described ROADM system; Wherein, In the said step 2; Further comprise: when need not launch wavelength selector spare reuse port the time, said control device for the newly-increased business of setting out on a journey or down the road business on the existing port that spare capacity arranged, seek the wavelength available of this port definition again, and the step that this Wavelength Assignment is used to new business.
The medium wavelength system of selection of described ROADM system; Wherein, In the said step 2; Further comprise: when needs launch wavelength selector spare reuse port the time, further judge whether that according to the situation of traffic carrying capacity of setting out on a journey needs launch road port and/or judge whether that according to the situation of descending the road traffic carrying capacity needs launch down the step of road port.
The medium wavelength system of selection of described ROADM system wherein, in the said step 2, further comprises:
When needs are launched road port; Further judge whether said wavelength selector spare exists the step of the port of idle wavelength ability; If exist, the then newly-increased reusable port of said control device is last road port, and it is last road port that notice wavelength selector spare is launched this port; And be new service wavelength of professional application/distribution on road port on this, change said step 1 over to; Or
In the time need not launching road port, further judge whether that according to the following situation of road traffic carrying capacity needs launch down the step of road port.
The medium wavelength system of selection of described ROADM system wherein, in the said step 2, further comprises:
When needs are launched down road port; Further judge whether said wavelength selector spare exists the step of the port of idle wavelength ability; If exist, the then newly-increased reusable port of said control device is road port down, and notice wavelength selector spare starts this port and is road port down; And be new service wavelength of professional application/distribution on this time road port, change said step 1 over to; Or
In the time need not launching down road port, directly change said step 1 over to.
The medium wavelength system of selection of described ROADM system wherein, in the said step 2, further comprises:
When needs are launched down road port; Further judge whether said wavelength selector spare exists the step of the port of idle wavelength ability; If exist, the then newly-increased reusable port of said control device is road port down, and notice wavelength selector spare starts this port and is road port down; And be new service wavelength of professional application/distribution on this time road port, change said step 1 over to; Or
In the time need not launching down road port, further judge whether that according to the situation of traffic carrying capacity of setting out on a journey needs launch the step of road port.
The medium wavelength system of selection of described ROADM system wherein, in the said step 2, further comprises:
When needs are launched road port; Further judge whether said wavelength selector spare exists the step of the port of idle wavelength ability; If exist, the then newly-increased reusable port of said control device is last road port, and it is last road port that notice wavelength selector spare is launched this port; And be new service wavelength of professional application/distribution on road port on this, change said step 1 over to; Or
In the time need not launching road port, directly change said step 1 over to.
To achieve these goals, the present invention also provides a kind of wavelength selection system, is used for the ROADM system, and this wavelength selection system comprises at least two point of termination station, at least two relay and at least two wavelength selector spares, it is characterized in that, also comprises:
Control device is used to obtain the traffic carrying capacity of the business of said point of termination station and said relay, and obtains port attribute and institute's loaded service amount of said wavelength selector spare according to said traffic carrying capacity; Control according to said port attribute and institute's loaded service amount that said wavelength selector spare carries out the port attribute setting and service wavelength is distributed.
To achieve these goals; The present invention also provides a kind of ROADM system, comprises wavelength selection system, and this wavelength selection system comprises at least two point of termination station, at least two relay and at least two wavelength selector spares; It is characterized in that this wavelength selection system also comprises:
Control device is used to obtain the traffic carrying capacity of the business of said point of termination station and said relay, and obtains port attribute and institute's loaded service amount of said wavelength selector spare according to said traffic carrying capacity; Control according to said port attribute and institute's loaded service amount that said wavelength selector spare carries out the port attribute setting and service wavelength is distributed.
Beneficial effect of the present invention is:
Compared with prior art, employing the present invention has improved the multiplexing efficient of WSS device port, but the business up and down that dynamic process increases gradually; And can accomplish assignment work automatically, thereby reduce the cost of ROADM system according to the size of traffic carrying capacity to WSS device port attribute.
Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.
Description of drawings
Fig. 1 is the ROADM system construction drawing of prior art;
Fig. 2 is a wavelength selection system structure chart of the present invention;
Fig. 3 is a Wavelength selecting method flow chart of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the enforcement of technical scheme of the present invention is done further to describe in detail.
As shown in Figure 2, be wavelength selection system structure chart of the present invention, this wavelength selection system 2 is applied to the ROADM system, comprising: control device 10, point of termination station 21,22, relay 31,32, wavelength selector spare 41,42.
Business comprises the business of the business of setting out on a journey, following road business, three kinds of directions of express traffic.
The business of setting out on a journey is meant from relay 31 self to point of termination station 22 business of (or relay 32 self to point of termination station 21);
Following road business is meant the business of from point of termination station 21 to relay 31 (or point of termination station 22 is to relay 32);
Express traffic is only to pass through relay 31 to point of termination station 22 from point of termination station 21, perhaps the business from point of termination station 22 process relay 32 to point of termination station 21.
On the point of termination station 21,22 about the no business; The professional trend that is meant the information that light wave carries up and down.Will be such as, the information that goes out from point of termination station 21 to relay 31, road under wavelength selector spare 41 is professional then; To then set out on a journey to point of termination station 22 from the information that relay 31 goes out in wavelength selector spare 41 business.
Having or not business is up and down to determine according to website service conditions at that time.Such as, when this moment, relay 31 self had business will pass to point of termination station 22 (being not to be transmitted by another point of termination station 21), just there is business to set out on a journey in relay 31.Equally, when point of termination station 21 had business will pass to relay 31 (and only need not pass to point of termination station 22), this business was just on 31 times roads of relay.If there is not such business, then relay 31 is with regard to about the no business.
Algorithm according to prior setting is controlled 41,42 teamworks sequentially of each wavelength selector spare through control device 10, selects port road up and down automatically to reach according to traffic carrying capacity.
The service conditions of point of termination station 21,22 is meant the direction of what and traffic carrying capacity of traffic carrying capacity; The direction of traffic carrying capacity comprises sets out on a journey, descends road, straight-through.If the following road traffic carrying capacity of point of termination station 21,22 is big, then adjusts more port and be following road attribute; Otherwise,, then adjust more port and be the attribute of setting out on a journey if the traffic carrying capacity of setting out on a journey of point of termination station 21,22 is big; If professional process point of termination station 21,22 need not be gone up or down, then the traffic carrying capacity of this port calculated the nothing influence.
Point of termination station the 21, the 22nd, service source and sink in the communication; Relay the 31, the 32nd, the intermediate node in the communication; Wavelength selector spare 41,42 is used to let under the business that a part brings out from service source the road to this locality, lets professional last to the sink end that a part of this locality sets out on a journey.
The traffic carrying capacity of 22 directions comprises from point of termination station 21 to point of termination station: from the point of termination station 21s to point of termination station 22 traffic carrying capacity, halfway from the traffic carrying capacity on 31 times roads of relay, midway from the set out on a journey traffic carrying capacity of point of termination station 22 of relay 31;
The traffic carrying capacity of 21 directions comprises from point of termination station 22 to point of termination station: from the point of termination station 22s to point of termination station 21 traffic carrying capacity, halfway from the traffic carrying capacity on 32 times roads of relay, midway from the set out on a journey traffic carrying capacity of point of termination station 21 of relay 32.
Such as, at a time, when point of termination station 21 sets out fewly from the traffic carrying capacity on 31 times roads of relay, and the set out on a journey traffic carrying capacity of point of termination station 22 of relay 31 is many, then needs the more multiport of wavelength selector spare 41 attribute that is set to set out on a journey; Otherwise when point of termination station 21 sets out manyly from the traffic carrying capacity on 31 times roads of relay, and the set out on a journey traffic carrying capacity of point of termination station 22 of relay 31 is few, then needs the more multiport of wavelength selector spare 41 to be set to down the road attribute.
As shown in Figure 3, be Wavelength selecting method flow chart of the present invention, in conjunction with Fig. 2, this flow process specifically comprises the steps:
Step 301, the initial service of system are respectively from default road port up and down road up and down;
Step 302, control device 10 from point of termination station 21 go out to obtain through to the traffic carrying capacity of point of termination station 22 and down the road to the traffic carrying capacity of relay 31;
Step 304, control device 10 determines whether that according to traffic carrying capacity needs launch the port of reusing of wavelength selector spare 41; If the following road traffic carrying capacity or the traffic carrying capacity of setting out on a journey then need, and change step 305 over to all above the port institute ability loaded service amount of having launched at present; If the following road traffic carrying capacity or the traffic carrying capacity of setting out on a journey are all less than surpassing the port institute ability loaded service amount of having launched at present; Then do not need; For the newly-increased business of setting out on a journey or down the road business on the existing port that spare capacity arranged, seek the wavelength available of this port definition again; And this Wavelength Assignment used to new business, and change step 302 over to;
Step 305 further judges whether that according to the situation of traffic carrying capacity of setting out on a journey needs launch road port, if set out on a journey the traffic carrying capacity overloading, and needs then, and change step 306 over to, if set out on a journey not overloading of traffic carrying capacity, then do not need, and change step 307 over to;
Step 307 further judges whether that according to the following situation of road traffic carrying capacity needs launch down road port, if road traffic carrying capacity overloading down then needs, and changes step 308 over to, if traffic carrying capacity overloading not in following road does not then need, and changes step 302 over to;
Step 308; Further judge whether to also have the port (and ports having can be used) of idle wavelength ability, if having, a then newly-increased reusable port is following road port; Notice wavelength selector spare 41 starts these ports and is following road port; And be new service wavelength of professional application/distribution on this time road port, with the business of carrying, and change step 302 over to; If no, then change step 309 over to;
Step 310 finishes.
The execution sequence of above-mentioned steps 305, step 307 also can be exchanged, and judges whether earlier to launch down road port, judges whether to launch road port again.
The present invention is through descend the road or set out on a journey specially at the fixing a certain port of WSS device; Change all the other ports into the restructural port; Can allocate through traffic carrying capacity up and down; Thereby on the basis that does not reduce its flexibility, improved the service efficiency/multiplexing efficient of WSS device port greatly, greatly reduced the cost of ROADM system.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (11)
1. Wavelength selecting method is used to comprise the ROADM system of wavelength selection system, and this wavelength selection system comprises control device, at least two point of termination station, at least two relay and at least two wavelength selector spares, it is characterized in that this method comprises:
Step 1, obtain by said control device said point of termination station and said relay business traffic carrying capacity and obtain port attribute and institute's loaded service amount of said wavelength selector spare according to said traffic carrying capacity;
Step 2 is controlled according to said port attribute and institute's loaded service amount by said control device that said wavelength selector spare carries out the port attribute setting and service wavelength is distributed.
2. the medium wavelength system of selection of ROADM according to claim 1 system is characterized in that, in the said step 1, said business comprises the business of setting out on a journey, the road is professional down, and said traffic carrying capacity comprises the traffic carrying capacity of setting out on a journey, road traffic carrying capacity down.
3. Wavelength selecting method according to claim 2 is characterized in that, in the said step 2, further comprises: determine whether that according to traffic carrying capacity needs launch the port of reusing of wavelength selector spare by said control device; If the following road traffic carrying capacity or the traffic carrying capacity of setting out on a journey then need all above the port institute ability loaded service amount of having launched at present; If the following road traffic carrying capacity or the traffic carrying capacity of setting out on a journey then do not need all less than surpassing the port institute ability loaded service amount of having launched at present.
4. Wavelength selecting method according to claim 3; It is characterized in that; In the said step 2; Further comprise: when need not launch wavelength selector spare reuse port the time, said control device for the newly-increased business of setting out on a journey or down the road business on the existing port that spare capacity arranged, seek the wavelength available of this port definition again, and the step that this Wavelength Assignment is used to new business.
5. according to claim 3 or 4 described Wavelength selecting methods; It is characterized in that; In the said step 2; Further comprise: when needs launch wavelength selector spare reuse port the time, further judge whether that according to the situation of traffic carrying capacity of setting out on a journey needs launch road port and/or judge whether that according to the situation of descending the road traffic carrying capacity needs launch down the step of road port.
6. Wavelength selecting method according to claim 5 is characterized in that, in the said step 2, further comprises:
When needs are launched road port; Further judge whether said wavelength selector spare exists the step of the port of idle wavelength ability; If exist, the then newly-increased reusable port of said control device is last road port, and it is last road port that notice wavelength selector spare is launched this port; And be new service wavelength of professional application/distribution on road port on this, change said step 1 over to; Or
In the time need not launching road port, further judge whether that according to the following situation of road traffic carrying capacity needs launch down the step of road port.
7. Wavelength selecting method according to claim 6 is characterized in that, in the said step 2, further comprises:
When needs are launched down road port; Further judge whether said wavelength selector spare exists the step of the port of idle wavelength ability; If exist, the then newly-increased reusable port of said control device is road port down, and notice wavelength selector spare starts this port and is road port down; And be new service wavelength of professional application/distribution on this time road port, change said step 1 over to; Or
In the time need not launching down road port, directly change said step 1 over to.
8. Wavelength selecting method according to claim 5 is characterized in that, in the said step 2, further comprises:
When needs are launched down road port; Further judge whether said wavelength selector spare exists the step of the port of idle wavelength ability; If exist, the then newly-increased reusable port of said control device is road port down, and notice wavelength selector spare starts this port and is road port down; And be new service wavelength of professional application/distribution on this time road port, change said step 1 over to; Or
In the time need not launching down road port, further judge whether that according to the situation of traffic carrying capacity of setting out on a journey needs launch the step of road port.
9. Wavelength selecting method according to claim 8 is characterized in that, in the said step 2, further comprises:
When needs are launched road port; Further judge whether said wavelength selector spare exists the step of the port of idle wavelength ability; If exist, the then newly-increased reusable port of said control device is last road port, and it is last road port that notice wavelength selector spare is launched this port; And be new service wavelength of professional application/distribution on road port on this, change said step 1 over to; Or
In the time need not launching road port, directly change said step 1 over to.
10. a wavelength selection system is used for the ROADM system, and this wavelength selection system comprises at least two point of termination station, at least two relay and at least two wavelength selector spares, it is characterized in that, also comprises:
Control device is used to obtain the traffic carrying capacity of the business of said point of termination station and said relay, and obtains port attribute and institute's loaded service amount of said wavelength selector spare according to said traffic carrying capacity; Control according to said port attribute and institute's loaded service amount that said wavelength selector spare carries out the port attribute setting and service wavelength is distributed.
11. a ROADM system comprises wavelength selection system, this wavelength selection system comprises at least two point of termination station, at least two relay and at least two wavelength selector spares, it is characterized in that this wavelength selection system also comprises:
Control device is used to obtain the traffic carrying capacity of the business of said point of termination station and said relay, and obtains port attribute and institute's loaded service amount of said wavelength selector spare according to said traffic carrying capacity; Control according to said port attribute and institute's loaded service amount that said wavelength selector spare carries out the port attribute setting and service wavelength is distributed.
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| CN2007101754773A CN101141224B (en) | 2007-09-29 | 2007-09-29 | ROADM system and wavelength selecting method and device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101695143B (en) * | 2009-11-02 | 2012-10-17 | 烽火通信科技股份有限公司 | Method for realizing ROADM node wave length non-blocking scheduling |
| CN103023599A (en) * | 2011-09-20 | 2013-04-03 | 武汉邮电科学研究院 | Reconfigurable optical add-drop multiplexer and reconfigurable optical add-drop multiplexing method |
| CN108352921B (en) * | 2015-11-25 | 2019-12-17 | 华为技术有限公司 | Reconfigurable optical add-drop multiplexer |
| CN107517115B (en) * | 2016-06-16 | 2021-11-12 | 中兴通讯股份有限公司 | Method and device for adjusting uplink and downlink services of service site |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1423447A (en) * | 2002-12-19 | 2003-06-11 | 上海交通大学 | Classified exchange optical cross node structure based on information flow classifying model |
| JP2006074479A (en) * | 2004-09-02 | 2006-03-16 | Sumitomo Electric Ind Ltd | Optical communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1423447A (en) * | 2002-12-19 | 2003-06-11 | 上海交通大学 | Classified exchange optical cross node structure based on information flow classifying model |
| JP2006074479A (en) * | 2004-09-02 | 2006-03-16 | Sumitomo Electric Ind Ltd | Optical communication system |
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