WO2014005269A1 - 频谱带宽分配方法和设备 - Google Patents
频谱带宽分配方法和设备 Download PDFInfo
- Publication number
- WO2014005269A1 WO2014005269A1 PCT/CN2012/078075 CN2012078075W WO2014005269A1 WO 2014005269 A1 WO2014005269 A1 WO 2014005269A1 CN 2012078075 W CN2012078075 W CN 2012078075W WO 2014005269 A1 WO2014005269 A1 WO 2014005269A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- service
- spectrum bandwidth
- bandwidth
- spectrum
- path
- Prior art date
Links
- 238000001228 spectrum Methods 0.000 title claims abstract description 459
- 238000000034 method Methods 0.000 title claims abstract description 47
- 108010001267 Protein Subunits Proteins 0.000 claims description 10
- 238000004590 computer program Methods 0.000 claims 3
- 239000013307 optical fiber Substances 0.000 claims 1
- 230000003287 optical effect Effects 0.000 abstract description 25
- 238000004891 communication Methods 0.000 abstract description 24
- 238000010586 diagram Methods 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000013468 resource allocation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
- H04J14/0254—Optical medium access
- H04J14/0267—Optical signaling or routing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
- H04J14/0254—Optical medium access
- H04J14/0256—Optical medium access at the optical channel layer
Definitions
- the present invention relates to communication technologies, and in particular, to a spectrum bandwidth allocation method and device. Background of the invention
- the requirements for the transmission rate of optical communication networks are also increasing.
- signals at rates above 400 Gb/s will occupy a wider spectrum bandwidth.
- the maximum spectrum bandwidth required by each rate signal can be used as a fixed frequency interval (for example, 50 GHz/100 GHz), but such a spectrum bandwidth allocation method would be adopted. Lead to serious waste of spectrum.
- the optical network will evolve from a fixed bandwidth optical network to a variable bandwidth optical network, that is, from a fixed spectrum bandwidth to a flexible variable spectrum bandwidth.
- a smaller-width spectrum unit slice (for example, 12.5 GHz) can be defined, and a channel for transmitting a traffic signal can occupy a plurality of spectrum unit slices to achieve flexible configuration of spectrum bandwidth.
- a relatively large spectrum bandwidth is reserved as a guard band. The utilization of spectrum bandwidth in an optical communication network is significantly reduced. Summary of the invention
- the embodiments of the present invention provide a spectrum bandwidth allocation method and apparatus, which can improve the utilization of spectrum bandwidth in an optical communication network.
- an embodiment of the present invention provides a spectrum bandwidth allocation method, including: acquiring a request message for adding a first service, determining a path of the first service; and the request message carrying a channel of the first service Information of the first spectrum bandwidth to be occupied; If the path of the second service in the existing service is the same as the path of the first service, determining the adjacent idle spectrum bandwidth of the second spectrum bandwidth occupied by the channel of the second service as the allocated resource, the second spectrum The adjacent idle spectrum bandwidth of the bandwidth meets the requirement of adding the third spectrum bandwidth required for the first service, where the third spectrum bandwidth includes: the first spectrum bandwidth, the first service and the same path The fourth spectrum bandwidth required by the protection band between the channels of the second service, where the fourth spectrum bandwidth is smaller than the spectrum bandwidth occupied by the protection band between the channels of the two services with different paths;
- the implementation of the present invention provides a device, where the device includes: a message acquiring unit, a path determining unit, a first bandwidth selecting unit, and a first bandwidth allocating unit; wherein the message acquiring unit is configured to obtain Adding a request message of the first service, and determining a path of the first service; the request message carrying information about a first spectrum bandwidth required by the channel of the first service;
- the path determining unit is configured to receive a determination result output by the message obtaining unit, and determine whether a path of each service in the existing service is the same as a path of the first service;
- the first bandwidth selection unit configured to receive the result of the determination by the path determining unit, that the path of the second service in the existing service is the same as the path of the first service, and determine the channel of the second service.
- An adjacent idle spectrum bandwidth of the occupied second spectrum bandwidth is used as an allocation resource, and an adjacent idle spectrum bandwidth of the second spectrum bandwidth satisfies a requirement for adding a third spectrum bandwidth required for adding the first service, where
- the third spectrum bandwidth includes: the first spectrum bandwidth, the fourth spectrum bandwidth required by the guard band between the first service and the second service channel with the same path, and the fourth spectrum bandwidth is smaller than the path The spectrum bandwidth occupied by the guard band between the channels of the two different services;
- the first bandwidth allocation unit is configured to receive a determination result output by the first bandwidth selection unit, and allocate the first service from a neighboring idle spectrum bandwidth of the second spectrum bandwidth.
- the third spectrum bandwidth is configured to receive a determination result output by the first bandwidth selection unit, and allocate the first service from a neighboring idle spectrum bandwidth of the second spectrum bandwidth.
- the new service to be added it is required to determine whether the path of the new service is the same as the path of the existing service. If the same, the spectrum occupied by the channel of the service of the same path is determined in the existing service. Bandwidth, and selecting adjacent idle spectrum bandwidths for the spectrum bandwidth that meet the requirements for adding new services, and then allocating spectrum bandwidth for the new traffic adjacent to the spectrum bandwidth.
- the allocated spectrum bandwidth includes the spectrum bandwidth required for the channel of the new service, and the spectrum bandwidth required for the guard band between the new service and the channel of the existing service; and the two services of the same path
- the guard band between the channels is narrower than the guard band between the channels of the two services that are not the same path.
- the technical solution of the embodiment of the present invention is to connect the spectrum bandwidth occupied by the channel of the service of the same path as much as possible by using a relatively small spectrum bandwidth as a guard band, which obviously improves the spectrum bandwidth in the optical communication network.
- FIG. 1 is a schematic flowchart of a method for allocating a spectrum bandwidth according to an embodiment of the present invention
- FIG. 2 is a schematic diagram of spectrum bandwidth allocation according to another embodiment of the present invention
- FIG. 3 is a schematic structural diagram of a network according to another embodiment of the present invention.
- FIG. 4 is a schematic structural diagram of an apparatus according to an embodiment of the present invention. detailed description
- FIG. 1 is a schematic flowchart of a method for allocating a spectrum bandwidth according to an embodiment of the method, where the method includes:
- a request message for adding a first service is obtained, and a path of the first service is determined.
- the request message carries information about a first spectrum bandwidth that is required to be occupied by a channel of the first service.
- an implementation situation is: the request message obtained by the source node device carries information about the spectrum bandwidth occupied by the channel of the new service and the new service. The information of the path, so that the source node device can quickly determine the path of the new service according to the obtained request message.
- a request message obtained by a path computation element (PCE) carries information about a spectrum bandwidth occupied by a channel of the new service, a source node of the new service, and a sink node. Information, and then the PCE can calculate the path of the new service by using the CSPF (Constrained Shortest Path First) algorithm according to the request message and the network topology information.
- PCE path computation element
- the adjacent idle spectrum bandwidth of the second spectrum bandwidth occupied by the channel of the second service is determined as an allocation resource, and the adjacent idle spectrum bandwidth of the second spectrum bandwidth is required to meet the requirement for adding the first service.
- the third spectrum bandwidth is: the third spectrum bandwidth includes: the first spectrum bandwidth, the fourth spectrum required by the guard band between the first service and the second service channel Bandwidth, the fourth spectrum bandwidth is smaller than the spectrum bandwidth occupied by the guard band between the channels of the two services whose paths are not the same.
- FIG. 2 is a schematic diagram of spectrum bandwidth allocation according to another embodiment of the present invention.
- the fiber link uploads and loses 4 services.
- the figure shows the spectrum bandwidth occupied by the channels transmitting 4 services, that is, the spectrum bandwidth occupied by channel 1, channel 2, channel 3 and channel 4.
- a guard band needs to be reserved between the channels of the two services, that is, the spectrum bandwidth is reserved as the guard band between channel 1 and channel 2.
- the spectrum bandwidth is reserved as the guard band between channel 2 and channel 3, and the left side of channel 1
- the spectrum bandwidth, the spectrum bandwidth between channel 3 and channel 4, and the spectrum bandwidth on the right side of channel 4 are all idle spectrum bandwidths, which can be used to allocate resources for new services.
- the third spectrum bandwidth is allocated to the first service from adjacent idle spectrum bandwidths of the second spectrum bandwidth.
- the allocated spectrum bandwidth includes the spectrum bandwidth required for the channel of the new service, and the spectrum bandwidth required for the guard band between the new service and the channel of the existing service; and the protection band in this embodiment Required spectrum
- the bandwidth is smaller than the spectrum bandwidth required for the guard band in the prior art (for example, 2 slices or 1 slice). That is to say, in the present embodiment, the guard bands between the channels of the two services of the same path are narrower than the guard bands between the channels of the two services of the different paths. Therefore, the technical solution of the embodiment of the present invention is to connect the spectrum bandwidth occupied by the channel of the service of the same path as much as possible by using a relatively small spectrum bandwidth as a guard band, which obviously improves the spectrum bandwidth in the optical communication network.
- the utilization rate can also effectively avoid the problem that signal crosstalk is easily generated between channels of services of different paths.
- the technical solution of the embodiment can more significantly improve the utilization of the spectrum bandwidth in the optical communication network, and can also more effectively avoid signals easily generated between channels of different paths of services.
- the method includes: in S110, if the path of each service in the existing service is different from the path of the first service, determining The adjacent idle spectrum bandwidth of the fifth spectrum bandwidth occupied by the channel of the third service in the existing service is used as the allocated resource, and the adjacent idle spectrum bandwidth of the fifth spectrum bandwidth is required to add the first service.
- the sixth spectrum bandwidth requirement, the sixth spectrum bandwidth includes: the first spectrum bandwidth, the path of the first service and the channel of the third service are different Seven spectrum bandwidth, the seventh spectrum bandwidth being greater than the fourth spectrum bandwidth.
- the sixth spectrum bandwidth is allocated to the first service from adjacent idle spectrum bandwidths of the fifth spectrum bandwidth.
- the new business taking the first business as an example
- the second service has the same path
- the new service does not have the same path as the other existing service (for example, the third service)
- the protection between the two channels of the first service and the second service is performed.
- the band is narrower, and the protection band between the two channels of the first service and the third service is wider.
- the method includes: if there are idle spectrum bandwidths that meet the requirements of the third spectrum bandwidth adjacent to both sides of the second spectrum bandwidth,
- the first idle spectrum bandwidth is adjacent to the spectrum bandwidth occupied by the channel of the fourth service in the existing service
- the second idle spectrum bandwidth is adjacent to the spectrum bandwidth occupied by the channel of the fifth service in the existing service.
- the channel bandwidth occupied by the channel of the fourth service is the closest to the distance of the second spectrum bandwidth
- the path of the fourth service and the path of the fifth service are both the same as the path of the second service
- the first idle spectrum bandwidth is used as the allocated resource.
- the method includes: if there are idle spectrums satisfying requirements of the third spectrum bandwidth adjacent to both sides of the second spectrum bandwidth a bandwidth, where the first idle spectrum bandwidth is adjacent to the spectrum bandwidth occupied by the channel of the fourth service in the existing service, and the second idle spectrum bandwidth is compared with the spectrum bandwidth occupied by the channel of the fifth service in the existing service. And the path of the fourth service is the same as the path of the second service, and the path of the fifth service is different from the path of the second service, and the first idle spectrum bandwidth is selected as the allocation. Resources.
- the method includes: if there are idle spectrums satisfying requirements of the third spectrum bandwidth adjacent to both sides of the second spectrum bandwidth a bandwidth, where the first idle spectrum bandwidth is adjacent to the spectrum bandwidth occupied by the channel of the fourth service in the existing service, the path of the fourth service is the same as the path of the second service, and the second idle spectrum bandwidth is If there is no spectrum bandwidth occupied by a channel of an existing service other than the second service, the first idle spectrum bandwidth is selected as the allocated resource.
- the method includes: if there are idle spectrums satisfying requirements of the third spectrum bandwidth adjacent to both sides of the second spectrum bandwidth a bandwidth, where the first idle spectrum bandwidth is the fourth service of the existing service The spectrum bandwidth occupied by the channel is adjacent, the path of the fourth service is different from the path of the second service, and the bandwidth of the second idle spectrum is not occupied by the channel of the existing service except the second service.
- the spectrum bandwidth is adjacent, and the second idle spectrum bandwidth is selected as the allocated resource.
- the method includes: if there are idle spectrums satisfying requirements of the third spectrum bandwidth adjacent to both sides of the second spectrum bandwidth a bandwidth, where the first idle spectrum bandwidth is adjacent to the spectrum bandwidth occupied by the channel of the fourth service in the existing service, and the second idle spectrum bandwidth is compared with the spectrum bandwidth occupied by the channel of the fifth service in the existing service. And the path of the fourth service and the path of the fifth service are different from the path of the second service, and the first idle spectrum bandwidth or the second idle spectrum bandwidth is arbitrarily selected as the resource allocation.
- the method includes: if there are two sides adjacent to the second spectrum bandwidth that meet the requirements of the third spectrum bandwidth The idle spectrum bandwidth, wherein the two idle spectrum bandwidths are not adjacent to the spectrum bandwidth occupied by the channels of the existing services other than the second service, and the first idle spectrum bandwidth or the The second idle spectrum bandwidth is used as the allocated resource.
- the existing service with the same path as the new service taking the first service as an example
- the second service taking the second service as an example;
- the spectrum bandwidth occupied by the channel of the existing service On the two sides adjacent to each other, there is an idle spectrum bandwidth that satisfies the requirement of adding the spectrum bandwidth required for the new service, and the idle spectrum bandwidth adjacent to one side needs to be selected as the allocated resource of the new service.
- the idle spectrum bandwidth between the channels of the two services of the same path is preferentially selected, and then the existing services are selected.
- the second service is an idle spectrum bandwidth that is not adjacent to the spectrum bandwidth of the channel of other services.
- the technical solution of the embodiment of the present invention is to connect the spectrum bandwidth occupied by the channel of the service of the same path as much as possible by using a relatively small spectrum bandwidth as a guard band, which obviously improves the optical communication network.
- the utilization of the spectrum bandwidth in the network and can also effectively avoid the problem of signal crosstalk easily occurring between channels of services of different paths.
- the method for allocating the spectrum bandwidth provided by the foregoing embodiments may be performed by the source node device, or may be performed by the PCE, or may be performed by other devices, and is merely a specific example, and the embodiment of the present invention is not limited.
- the source node of the service can obtain the information of the idle spectrum bandwidth on the fiber link between the adjacent nodes by sending a signaling message hop by hop to the node on the path of the service. Or obtaining the information of the idle spectrum bandwidth on the optical link in the optical communication network by receiving the information of the spectrum bandwidth occupied by the channel of the existing service sent by the network management.
- the above information is stored in advance in the source node, PCE or other device that executes the method of the above embodiment.
- the device that performs the method of the above embodiment also pre-stores the information of the path of the existing service.
- FIG. 3 is a schematic structural diagram of a network according to another embodiment of the present invention.
- service 1 and service 2 are existing services
- service 3 is a new service
- service 1 is A ⁇ B ⁇ C
- service 2 is ⁇ 8, and service 3 is source.
- the node is the node A
- the sink node of the service 3 is the node.
- the total spectrum bandwidth of the fiber link is 30 slices, where the spectrum bandwidth occupied by the channel of the service 1 is slicell ⁇ slicel5, and the spectrum bandwidth occupied by the channel of the service 2 is Slice23 ⁇ slice30, the channel bandwidth of the service 3 needs to occupy 4 slices, and the slice is defined in the variable bandwidth optical network.
- a small width spectrum unit such as 12.5 GHz.
- the node A sends a request message for adding a new service 3 to the PCE, where the request message carries the information of the source node A and the sink node C of the new service 3 and the information of the spectrum bandwidth occupied by the channel of the new service 3 by 4 slices.
- the PCE calculates the path of the new service 3 as A ⁇ B ⁇ C according to the obtained request message and the network topology information.
- the PCE determines that the path of the existing service 1 is the same as the path of the calculated new service 3, and further determines that the spectrum bandwidth occupied by the channel of the existing service 1 is adjacent to both sides of the slicell ⁇ slicel5, and the addition is satisfied.
- New service 3 required spectrum bandwidth 5 slices of free spectrum bandwidth required, namely: slicel ⁇ slicelO and slicel6 ⁇ slice22.
- the PCE determines that the path of the existing service 2 is different from the calculated path of the new service 3, and the spectrum bandwidth slice23 ⁇ slice30 occupied by the channel of the existing service 2 is adjacent to the idle spectrum bandwidth slicel6 ⁇ slice22, and the selection is from
- the idle spectrum bandwidth slicel ⁇ slicelO allocates 5 slices of spectrum bandwidth for the new service 3, ie: slicelO is allocated as a guard band between the existing service 1 and the channel of the new service 3, and slice6 ⁇ slice9 is allocated as a new service for transmission 3 Channel.
- the technical solution of the embodiment of the present invention is to connect the spectrum bandwidth occupied by the channel of the service of the same path as much as possible by using a relatively small spectrum bandwidth as a guard band, which obviously improves the spectrum bandwidth in the optical communication network.
- the utilization rate can also effectively avoid the problem that signal crosstalk is easily generated between channels of services of different paths.
- 4 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
- the device is used to implement allocation of spectrum bandwidth in an optical communication network.
- the device may be a source node device, or may be a PCE, or may be another device with similar functions. .
- the device includes: a message obtaining unit 402, a path determining unit 404, a first bandwidth selecting unit 406, and a first bandwidth allocating unit 408, which are as follows.
- the message obtaining unit 402 is configured to acquire a request message for adding the first service, and determine the first The path of the service; the request message carries information of the first spectrum bandwidth required by the channel of the first service.
- the path determining unit 404 is configured to receive the determination result output by the message obtaining unit 402, and determine whether the path of each service in the existing service is the same as the path of the first service.
- the first bandwidth selection unit 406 is configured to receive the result of the determination by the path determining unit 404 that the path of the second service in the existing service is the same as the path of the first service, and determine the channel of the second service.
- An adjacent idle spectrum bandwidth of the occupied second spectrum bandwidth is used as an allocation resource, and an adjacent idle spectrum bandwidth of the second spectrum bandwidth satisfies a requirement for adding a third spectrum bandwidth required for adding the first service, where
- the third spectrum bandwidth includes: the first spectrum bandwidth, the fourth spectrum bandwidth required by the guard band between the first service and the second service channel with the same path, and the fourth spectrum bandwidth is smaller than the path
- the protection bandwidth between the channels of the two services is not the same as the bandwidth occupied by the spectrum.
- the first bandwidth allocating unit 408 is configured to receive the determination result output by the first bandwidth selecting unit 406, and allocate the third spectrum to the first service from the adjacent idle spectrum bandwidth of the second spectrum bandwidth. bandwidth.
- the allocated spectrum bandwidth includes the spectrum bandwidth required for the channel of the new service, and the spectrum bandwidth required for the guard band between the new service and the channel of the existing service; and the protection band in this embodiment
- the required spectrum bandwidth is smaller than the spectrum bandwidth required for the guard band in the prior art (for example, 2 slices or 1 slice). That is to say, in this embodiment, the channels of the two services of the same path are The guard band between the two is narrower than the guard band between the channels of the two services that are not the same path. Therefore, the technical solution of the embodiment of the present invention is to connect the spectrum bandwidth occupied by the channel of the service of the same path as much as possible by using a relatively small spectrum bandwidth as a guard band, which obviously improves the spectrum bandwidth in the optical communication network.
- the utilization rate can also effectively avoid the problem that signal crosstalk is easily generated between channels of services of different paths.
- the device further includes a second bandwidth selection unit 410 and a second bandwidth allocation unit 412, the details of which are as follows.
- the second bandwidth selection unit 410 is configured to receive the result of the determination by the path determining unit 404 that the path of each service in the existing service is different from the path of the first service, and determine the existing service.
- the adjacent idle spectrum bandwidth of the fifth spectrum bandwidth occupied by the channel of the third service is used as the allocated resource, and the adjacent idle spectrum bandwidth of the fifth spectrum bandwidth satisfies the sixth spectrum bandwidth required for adding the first service. It is required that the sixth spectrum bandwidth includes: a first spectrum bandwidth, a seventh spectrum bandwidth required by a guard band between the first service and the third service channel The seventh spectrum bandwidth is greater than the fourth spectrum bandwidth.
- the second bandwidth allocation unit 412 is configured to allocate the sixth spectrum bandwidth for the first service from adjacent idle spectrum bandwidths of the fifth spectrum bandwidth.
- the new service and another existing service have the same path
- the new service and another existing service the third service is For example, the protection path between the two channels of the first service and the second service is narrow, and the protection band between the two channels of the first service and the third service is wider.
- the first bandwidth selection unit 406 in the apparatus may include a plurality of subunits as follows:
- a receiving subunit 4061 configured to receive the result of the determination by the path determining unit 404 that the path of the second service in the existing service is the same as the path of the first service;
- the determining subunit 4062 is configured to determine, as the allocated resource, the adjacent idle spectrum bandwidth of the second spectrum bandwidth occupied by the channel of the second service. It is worth noting that when the existing service with the same path as the new service (taking the first service as an example) is determined (taking the second service as an example;), and further determining the spectrum bandwidth occupied by the channel of the existing service On the two sides adjacent to each other, there is an idle spectrum bandwidth that satisfies the requirement of adding the spectrum bandwidth required for the new service, and the idle spectrum bandwidth adjacent to one side needs to be selected as the allocated resource of the new service. Then, for the determining sub-unit 4062 in the first bandwidth selecting unit 406, it may further include one or more sub-units, each of which functions as a function of determining a resource allocation. The details are as follows.
- the determining subunit 4062 includes:
- a first sub-unit configured to determine, in the adjacent two sides of the second spectrum bandwidth, an idle spectrum bandwidth that meets a requirement of the third spectrum bandwidth, where the first idle spectrum bandwidth is in the existing service
- the spectrum bandwidth occupied by the channel of the fourth service is adjacent, and the bandwidth of the second idle spectrum is adjacent to the spectrum bandwidth occupied by the channel of the fifth service in the existing service, and the spectrum bandwidth occupied by the channel of the fourth service is
- the second spectrum bandwidth is the closest, and the path of the fourth service and the path of the fifth service are both the same as the path of the second service, and the first idle spectrum bandwidth is selected as the allocated resource.
- the determining subunit 4062 includes:
- a second sub-unit configured to determine, in the adjacent two sides of the second spectrum bandwidth, an idle spectrum bandwidth that meets the requirement of the third spectrum bandwidth, where the first idle spectrum bandwidth is in the existing service
- the spectrum bandwidth occupied by the channel of the fourth service is adjacent, and the bandwidth of the second idle spectrum is adjacent to the spectrum bandwidth occupied by the channel of the fifth service in the existing service, and the path of the fourth service and the path of the second service If the path of the fifth service is different from the path of the second service, the first idle spectrum bandwidth is selected as the allocated resource.
- the determining subunit 4062 includes: a third sub-unit, configured to determine, in the adjacent two sides of the second spectrum bandwidth, an idle spectrum bandwidth that meets the requirement of the third spectrum bandwidth, where the first idle spectrum bandwidth is in the existing service
- the spectrum bandwidth occupied by the channel of the fourth service is adjacent, the path of the fourth service is the same as the path of the second service, and the bandwidth of the second idle spectrum is not related to other existing services except the second service. If the spectrum bandwidth occupied by the channel is adjacent, the first idle spectrum bandwidth is selected as the allocated resource.
- the determining subunit 4062 includes:
- a fourth sub-unit configured to determine, in the adjacent two sides of the second spectrum bandwidth, an idle spectrum bandwidth that meets the requirement of the third spectrum bandwidth, where the first idle spectrum bandwidth is in the existing service
- the spectrum occupied by the channel of the fourth service is adjacent, the path of the fourth service is different from the path of the second service, and the bandwidth of the second idle spectrum is not related to the existing service except the second service.
- the spectrum bandwidth occupied by the channel is adjacent, and the second idle spectrum bandwidth is selected as the allocated resource.
- the determining subunit 4062 includes:
- a fifth sub-unit configured to determine, in the adjacent two sides of the second spectrum bandwidth, an idle spectrum bandwidth that meets the requirement of the third spectrum bandwidth, where the first idle spectrum bandwidth is in the existing service
- the spectrum bandwidth occupied by the channel of the fourth service is adjacent, and the bandwidth of the second idle spectrum is adjacent to the spectrum bandwidth occupied by the channel of the fifth service in the existing service, and the path of the fourth service and the path of the fifth service If the path is different from the path of the second service, the first idle spectrum bandwidth or the second idle spectrum bandwidth is arbitrarily selected as the allocated resource.
- the determining subunit 4062 includes:
- a sixth sub-unit configured to have two idle spectrum bandwidths satisfying requirements of the third spectrum bandwidth at two adjacent sides of the second spectrum bandwidth, where the two idle spectrum bandwidths are not If the spectrum bandwidth occupied by the channels of the existing services other than the second service are adjacent, the first idle spectrum bandwidth or the second idle spectrum bandwidth is arbitrarily selected as the allocated resource.
- the idle spectrum bandwidth between the channels of the two services of the same path is preferentially selected, and the spectrum of the channel other than the existing service (for example, the second service is selected) is not selected.
- the idle spectrum bandwidth adjacent to the bandwidth If neither of the two types of idle spectrum bandwidth exists, the idle spectrum bandwidth between the channels of the two services of different paths is selected. Therefore, the technical solution of the embodiment of the present invention is to connect the spectrum bandwidth occupied by the channel of the service of the same path as much as possible by using a relatively small spectrum bandwidth as a guard band, which obviously improves the spectrum bandwidth in the optical communication network.
- the utilization rate can also effectively avoid the problem that signal crosstalk is easily generated between channels of services of different paths.
- the technical solution of the embodiment of the present invention only modifies the weight of a part of the link in the network, and does not need to affect the traffic of all the links in the network, but the prior art solution is Modifying the weight of all links in the network will inevitably affect the traffic of all links.
- the technical solution of the embodiment of the present invention not only can quickly and effectively solve the problem of excessive traffic occurring in a certain area of the network, but also affects the service transmitted in the network as little as possible, thereby avoiding the change of the prior art solution. All link weights in the network affect the situation of all services transmitted in the network.
- the communication connections referred to in the above embodiments may be communication connections through some interfaces, devices or units, and may be in electrical, mechanical or other form. It should also be noted that the "first,”, “second,”, “third,”, “fourth,”, “fifth,”, “sixth,” and “first” in the above embodiments The description of the present invention is intended to be illustrative, and is not intended to limit the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Optical Communication System (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2012/078075 WO2014005269A1 (zh) | 2012-07-02 | 2012-07-02 | 频谱带宽分配方法和设备 |
EP12880709.6A EP2863671B1 (en) | 2012-07-02 | 2012-07-02 | Spectrum bandwidth allocation method and device |
RU2015103068/07A RU2596155C2 (ru) | 2012-07-02 | 2012-07-02 | Способ и устройство для выделения спектрального диапазона |
CN201280001022.9A CN102893630B (zh) | 2012-07-02 | 2012-07-02 | 频谱带宽分配方法和设备 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2012/078075 WO2014005269A1 (zh) | 2012-07-02 | 2012-07-02 | 频谱带宽分配方法和设备 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014005269A1 true WO2014005269A1 (zh) | 2014-01-09 |
Family
ID=47535611
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2012/078075 WO2014005269A1 (zh) | 2012-07-02 | 2012-07-02 | 频谱带宽分配方法和设备 |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2863671B1 (zh) |
CN (1) | CN102893630B (zh) |
RU (1) | RU2596155C2 (zh) |
WO (1) | WO2014005269A1 (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106254242A (zh) * | 2016-08-04 | 2016-12-21 | 胡汉强 | 一种数据传输方法、集中控制器、转发面设备和本端通信装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080070586A1 (en) * | 2006-09-18 | 2008-03-20 | Nokia Corporation | Method and apparatus for adjusting guard band size between two carriers by quality of service data positioning in the spectrum band |
CN102196451A (zh) * | 2011-05-27 | 2011-09-21 | 华中科技大学 | 适合多系统共存的动态无线频谱共享方法 |
CN102447623A (zh) * | 2011-11-22 | 2012-05-09 | 北京邮电大学 | 光网络频谱资源碎片级联方法及装置 |
WO2012066385A1 (en) * | 2010-11-17 | 2012-05-24 | Nokia Corporation | Apparatus and method to reduce interference between frequency-division duplex and time-division duplex signals in a communication system |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0117177D0 (en) * | 2001-07-13 | 2001-09-05 | Hughes Philip T | System and method for mass broadband communications |
US7068938B1 (en) * | 2002-03-15 | 2006-06-27 | Xtera Communications, Inc. | Band optical add/drop multiplexing |
KR100683833B1 (ko) * | 2005-12-28 | 2007-02-16 | 한국과학기술원 | 파장 할당 방법을 이용한 다단 분기 파장분할 다중방식수동형 광 가입자망 장치 |
US8483564B2 (en) * | 2009-07-31 | 2013-07-09 | Tyco Electronics Subsea Communications Llc | Hybrid optical add-drop multiplexing network and wavelength allocation for the same |
EP2403169B1 (en) * | 2010-06-29 | 2013-01-16 | Alcatel Lucent | A method in an optical network to allocate a total optical bandwidth |
-
2012
- 2012-07-02 WO PCT/CN2012/078075 patent/WO2014005269A1/zh active Application Filing
- 2012-07-02 RU RU2015103068/07A patent/RU2596155C2/ru active
- 2012-07-02 EP EP12880709.6A patent/EP2863671B1/en active Active
- 2012-07-02 CN CN201280001022.9A patent/CN102893630B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080070586A1 (en) * | 2006-09-18 | 2008-03-20 | Nokia Corporation | Method and apparatus for adjusting guard band size between two carriers by quality of service data positioning in the spectrum band |
WO2012066385A1 (en) * | 2010-11-17 | 2012-05-24 | Nokia Corporation | Apparatus and method to reduce interference between frequency-division duplex and time-division duplex signals in a communication system |
CN102196451A (zh) * | 2011-05-27 | 2011-09-21 | 华中科技大学 | 适合多系统共存的动态无线频谱共享方法 |
CN102447623A (zh) * | 2011-11-22 | 2012-05-09 | 北京邮电大学 | 光网络频谱资源碎片级联方法及装置 |
Also Published As
Publication number | Publication date |
---|---|
EP2863671B1 (en) | 2016-09-07 |
RU2015103068A (ru) | 2016-08-20 |
EP2863671A1 (en) | 2015-04-22 |
CN102893630A (zh) | 2013-01-23 |
RU2596155C2 (ru) | 2016-08-27 |
EP2863671A4 (en) | 2015-05-20 |
CN102893630B (zh) | 2014-11-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2021036962A1 (zh) | 一种业务报文传输的方法及设备 | |
JP7375844B2 (ja) | 光ネットワーク管理装置 | |
TW200818751A (en) | Wireless communication systems | |
JP2011510523A5 (zh) | ||
WO2004077712A1 (ja) | 無線通信システム及び無線通信方法 | |
JP2016511576A (ja) | 光波長分割多重化(wdm)ネットワークにおけるネットワークフラグメンテーション測定 | |
WO2010048859A1 (zh) | 一种路径计算方法、节点设备及路径计算单元 | |
CN105391651B (zh) | 一种虚拟光网络多层资源汇聚方法和系统 | |
CN112583729B (zh) | 一种路径的流量分配方法、网络设备及网络系统 | |
WO2017148446A1 (zh) | 一种网络资源调度方法、设备、系统以及网络节点 | |
US20190342889A1 (en) | Method and device for data transmission of front-haul transport network, and computer storage medium | |
KC et al. | Cooperative multipath admission control protocol: a load balanced multipath admission policy | |
JP2011139460A5 (zh) | ||
WO2013109137A1 (en) | Allocating bandwidth in wireless multi-hop network | |
WO2012163015A1 (zh) | 路径计算的方法及装置 | |
CN108769842A (zh) | 多播业务保护构建方法及装置 | |
WO2014005269A1 (zh) | 频谱带宽分配方法和设备 | |
CN108631918A (zh) | 数据传输的方法和装置 | |
TW202102021A (zh) | 頻譜管理設備、電子設備、無線通信方法和儲存介質 | |
WO2005062869A3 (en) | Path engine for optical network | |
de Lira et al. | On combining split spectrum technique with a slot-continuity capacity loss heuristic in elastic optical networks | |
WO2017041592A1 (zh) | 并行发送数据的站点调度方法、装置、设备及系统 | |
CN109150747B (zh) | 一种变更业务带宽的方法、装置及计算机可读存储介质 | |
CN109698982B (zh) | 控制通道实现方法、装置、设备、存储介质和处理方法 | |
WO2020199046A1 (zh) | 一种Wi-Fi通信方法及装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201280001022.9 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12880709 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REEP | Request for entry into the european phase |
Ref document number: 2012880709 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012880709 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2015103068 Country of ref document: RU Kind code of ref document: A |