WO2016145658A1 - Procédé et appareil d'attribution d'un canal d'ondes - Google Patents

Procédé et appareil d'attribution d'un canal d'ondes Download PDF

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Publication number
WO2016145658A1
WO2016145658A1 PCT/CN2015/074599 CN2015074599W WO2016145658A1 WO 2016145658 A1 WO2016145658 A1 WO 2016145658A1 CN 2015074599 W CN2015074599 W CN 2015074599W WO 2016145658 A1 WO2016145658 A1 WO 2016145658A1
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Prior art keywords
channel
optical signal
newly added
node
nominal
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PCT/CN2015/074599
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English (en)
Chinese (zh)
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夏丹青
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华为技术有限公司
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Priority to PCT/CN2015/074599 priority Critical patent/WO2016145658A1/fr
Priority to CN201580031987.6A priority patent/CN106464537B/zh
Publication of WO2016145658A1 publication Critical patent/WO2016145658A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/62—Wavelength based

Definitions

  • the present invention relates to the field of optical communication technologies, and in particular, to a method and an apparatus for allocating channels.
  • the channel allocated by a service light has nothing to do with the next destination node of the service light.
  • the destination nodes of the traffic lights on adjacent channels are generally different, and the traffic lights of the same destination node may be distributed in different channels of the interval.
  • the filtering window will increase. Since each filtering window has a filtering effect at the edge of the window, when the filtering window increases, the filtering on the path node increases. The effect is more obvious.
  • the channel with the filtering effect has additional attenuation. Therefore, the more dispersed the service light of the same destination node, the more filter windows, the more actual filtering times, and the more serious the power attenuation and power imbalance caused by the filtering effect.
  • a technical problem to be solved by embodiments of the present invention is to provide a method and apparatus for allocating channels. In order to solve the problem that the channel distribution is dispersed and the filtering effect is serious.
  • an embodiment of the present invention provides a method for allocating a channel, including:
  • the new channel nominal filtering cost is the new a variation value of a nominal filter cost of the wavefront after the wave on the enhanced signal and the wavefront on the newly added optical signal, the nominal filter cost of the channel being the nominal filtering cost of the nodes of the route through which the routing channel passes And the node nominal filtering cost is the sum of the window nominal filtering costs of the filtering windows on the node;
  • the newly added optical signal distributes a routing channel.
  • the node nominal filtering cost is a sum of a window nominal filtering cost of each filtering window on the node, and specifically includes:
  • the node nominal filtering cost is a weighted summation of the window nominal filtering cost of each filtering window on the node and the filtering window weight value.
  • the channel nominal filtering cost is a node nominal of each node through which the routing channel passes.
  • the sum of the filtering costs including:
  • the nominal filter cost of the channel is a weighted summation of the node nominal filtering cost of each node through which the routing channel passes and the routing channel weight value.
  • the calculating each route in the available routing channel set The nominal channel filtering cost of the channel after the wave on the newly added optical signal is calculated by the following formula:
  • i is the sequence number of the routing channel in the set of available routing channels, and i is an integer greater than or equal to 0, and ⁇ C i is the new addition of the i-th routing channel after the wave on the newly added optical signal
  • M i is the nominal filtering cost of the channel of the i-th routing channel after the wave on the newly added optical signal
  • N i is the i-th routing wave of the wavefront of the newly added optical signal
  • the nominal channel filtering cost N i of the channel is calculated by the following formula:
  • ⁇ j is the Add the weight value of the i-th routing channel on the wavefront of the optical signal
  • j is an integer, and j ⁇ [1,m];
  • the node nominal filtering cost R j of the i-th routing channel of the newly added optical signal on the jth node of the wavefront is calculated by the following formula:
  • n ij is the number of filtering windows of the i-th routing channel at the j-th node on the newly added optical signal
  • ⁇ k is the weight value of the wavefront filtering window on the newly added optical signal
  • k is Integer, and k ⁇ [1,n ij ];
  • the channel nominal filtering cost M i of the i-th routing channel after the wave on the newly added optical signal is calculated by the following formula:
  • ⁇ ′ j is The weight value of the i-th routing channel after adding the wave on the optical signal, j is an integer, and j ⁇ [1,m];
  • the nominal filtering cost S j of the node of the i-th routing channel at the jth node of the newly added optical signal is calculated by the following formula:
  • n' ij is the number of filtering windows of the i-th routing channel at the j-th node after the wave on the newly added optical signal
  • ⁇ ' k is the weighting value of the filtering window after the wave of the newly added optical signal
  • k is an integer and k ⁇ [1, n' ij ].
  • the number of routing channels is allocated to the newly added optical signal.
  • the allocating the routing channel for the newly added optical signal specifically includes:
  • the routing channel with the least cost of the newly added nominal filtering is allocated to the newly added optical signal.
  • the allocating routing channels for the newly added optical signals specifically includes:
  • the routing channel is allocated to the newly added optical signal based on the following at least one reference information:
  • the total length of the path the number of path nodes, or the service requirement of the newly added optical signal.
  • an apparatus for allocating a channel including:
  • An obtaining unit configured to obtain a set of available routing channels between the starting node and the destination node of the newly added optical signal
  • a calculation unit configured to calculate a new channel nominal filtering cost of each of the routing channels in the available routing channel after the wave on the newly added optical signal, wherein the new channel nominal filtering
  • the cost is the change value of the nominal filter cost of the wavefront on the newly added optical signal and the wavefront on the newly added optical signal
  • the nominal filter cost of the channel is the node of each node through which the routing channel passes.
  • the sum of the nominal filtering costs, the node nominal filtering cost is the sum of the window nominal filtering costs of the filtering windows on the node;
  • the routing channel is allocated to the newly added optical signal in a routing channel corresponding to a new channel nominal filtering cost less than or equal to a preset threshold.
  • the node nominal filtering cost is a sum of a window nominal filtering cost of each filtering window on the node, and specifically includes:
  • the node nominal filtering cost is a weighted summation of the window nominal filtering cost of each filtering window on the node and the filtering window weight value.
  • the channel nominal filtering cost is a node identifier of each node through which the routing channel passes.
  • the sum of the filtering costs including:
  • the nominal filter cost of the channel is a weighted summation of the node nominal filtering cost of each node through which the routing channel passes and the routing channel weight value.
  • the calculating unit is specifically configured to calculate the available The new channel nominal filtering cost of each routing channel in the routing channel set after the wave on the newly added optical signal:
  • i is the sequence number of the routing channel in the set of available routing channels, and i is an integer greater than or equal to 0, and ⁇ C i is the new addition of the i-th routing channel after the wave on the newly added optical signal
  • M i is the nominal filtering cost of the channel of the i-th routing channel after the wave on the newly added optical signal
  • N i is the i-th routing wave of the wavefront of the newly added optical signal
  • the calculating unit is specifically configured to calculate the new The nominal filter cost of the channel of the i-th routing channel on the pre-wavelength signal is N i :
  • ⁇ j is the Add the weight value of the i-th routing channel on the wavefront of the optical signal
  • j is an integer, and j ⁇ [1,m];
  • the node nominal filtering cost R j of the i-th routing channel of the wavefront at the jth node on the newly added optical signal is calculated by the following formula:
  • n ij is the number of filtering windows of the i-th routing channel at the j-th node on the newly added optical signal
  • ⁇ k is the weight value of the wavefront filtering window on the newly added optical signal
  • k is Integer, and k ⁇ [1,n ij ];
  • ⁇ j ' is The weight value of the i-th routing channel after adding the wave on the optical signal, j is an integer, and j ⁇ [1,m];
  • n i ' j is the number of filtering windows of the i-th routing channel at the j-th node after the wave on the newly added optical signal
  • ⁇ k ' is the weight value of the filtering window of the newly added optical signal
  • k is an integer
  • the number of routing channels is allocated to the newly added optical signal.
  • the allocation unit is further used to:
  • the routing channel with the least cost of the newly added nominal filtering is allocated to the newly added optical signal.
  • the allocation unit is also used to:
  • the routing channel is allocated to the newly added optical signal based on the following at least one reference information:
  • the total length of the path the number of path nodes, or the service requirement of the newly added optical signal.
  • an apparatus for allocating a channel including:
  • the new channel nominal filtering cost is the new a variation value of a nominal filter cost of the wavefront after the wave on the enhanced signal and the wavefront on the newly added optical signal, the nominal filter cost of the channel being the nominal filtering cost of the nodes of the route through which the routing channel passes And the node nominal filtering cost is the sum of the window nominal filtering costs of the filtering windows on the node;
  • a routing channel is allocated to the newly added optical signal in a routing channel corresponding to a new channel nominal filtering cost less than or equal to a preset threshold.
  • the node nominal filtering cost is a sum of a window nominal filtering cost of each filtering window on the node, and specifically includes:
  • the node nominal filtering cost is a weighted summation of the window nominal filtering cost of each filtering window on the node and the filtering window weight value.
  • the nominal filtering cost of the channel is the sum of the nominal filtering costs of the nodes of the nodes through which the routing channel passes, including:
  • the nominal filter cost of the channel is a weighted summation of the node nominal filtering cost of each node through which the routing channel passes and the routing channel weight value.
  • the processor is specifically configured to calculate the available by using the following formula The new channel nominal filtering cost of each routing channel in the routing channel set after the wave on the newly added optical signal:
  • i is the sequence number of the routing channel in the set of available routing channels, and i is an integer greater than or equal to 0, and ⁇ C i is the new addition of the i-th routing channel after the wave on the newly added optical signal
  • M i is the nominal filtering cost of the channel of the i-th routing channel after the wave on the newly added optical signal
  • N i is the i-th routing wave of the wavefront of the newly added optical signal
  • the processor is specifically configured to calculate the new The nominal filter cost of the channel of the i-th routing channel on the pre-wavelength signal is N i :
  • ⁇ j is the Add the weight value of the i-th routing channel on the wavefront of the optical signal
  • j is an integer, and j ⁇ [1,m];
  • the node nominal filtering cost R j of the i-th routing channel of the wavefront at the jth node on the newly added optical signal is calculated by the following formula:
  • n ij is the number of filtering windows of the i-th routing channel at the j-th node on the newly added optical signal
  • ⁇ k is the weight value of the wavefront filtering window on the newly added optical signal
  • k is Integer, and k ⁇ [1,n ij ];
  • ⁇ ′ j is The weight value of the i-th routing channel after adding the wave on the optical signal, j is an integer, and j ⁇ [1,m];
  • n' ij is the number of filtering windows of the i-th routing channel at the j-th node after the wave on the newly added optical signal
  • ⁇ ' k is the weighting value of the filtering window after the wave of the newly added optical signal
  • k is an integer and k ⁇ [1, n' ij ].
  • the processor is further configured to:
  • the routing channel with the least cost of the newly added nominal filtering is allocated to the newly added optical signal.
  • the processor is also used to:
  • the routing channel is allocated to the newly added optical signal based on the following at least one reference information:
  • the total length of the path the number of path nodes, or the service requirement of the newly added optical signal.
  • FIG. 1 is a schematic flow chart of a method for allocating channels according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a network topology structure between ABCDEF nodes
  • FIG. 3 is a schematic diagram of the current occupancy of the exit channels of the nodes shown in FIG. 2;
  • FIG. 4 is a schematic diagram of calculating the cost of the nominal channel filtering of the new channel by using the method shown in FIG. 1;
  • Figure 5 is a schematic view showing the composition of a first embodiment of the apparatus for allocating channels of the present invention.
  • Figure 6 is a block diagram showing the composition of a second embodiment of the apparatus for distributing channels of the present invention.
  • FIG. 1 is a schematic flowchart of a method for allocating channels according to an embodiment of the present invention.
  • the method includes the following steps:
  • the set of available paths between the start node and the destination node of the newly added optical signal may be calculated.
  • the kth shortest path (KSP) algorithm, the link state routing (LS) algorithm, the distance vector algorithm or other algorithms are used to obtain a set of available paths for a specific service.
  • each available path in the set of available paths can contain multiple nodes, each node can contain multiple channels, so after calculating the available set of paths, it is also necessary to take the current channel occupancy in each available path.
  • the available routing channel set of the newly added optical signal is counted, and the channel in the available routing channel set is a channel that can be allocated to the newly added optical signal that has not been occupied yet.
  • the optical signal may include service light, that is, an optical signal carrying service information. Since there may be an existing service light that has been uplinked, it needs to occupy a part of the channel. When a new service light is needed, there is a new one. When the boosting signal needs an upper wave, it is necessary to consider the current channel occupancy to carry out the upper wave.
  • the new optical signal when the new optical signal is added to the channel for filtering, it will affect the filtering effect of the filtering window of the original optical signal.
  • the new filter window and the original filter window form a new continuous window, which is a new total filter window.
  • the filtering effect only occurs on both sides of the new total filtering window, and the resulting filtering effect will not change; if the channel from which the original filtering window is separated is assigned to the newly added optical signal, it will be based on the original filtering window.
  • a new filtering window is added, so that there will be filtering effects on both sides of the two filtering windows, and the filtering effect will increase.
  • the new optical signal is added, the two separated from the original node will be added.
  • the filter windows are coherent to form a new complete filter window, and the window that produces the filter effect will be reduced. Therefore, it is necessary to analyze the before and after changes of the filtering effect of the post-wave routing channel on the newly added optical signal.
  • a routing channel needs to go through several nodes, whether a new filtering window is generated at each node after the uplink, whether it brings more filtering effects, so it is necessary to carry out comprehensive analysis in combination with the situation of each node on the routing channel.
  • the present application introduces the concept of nominal filtering cost. If a single filter window is affected by the double-sided filtering effect, the filtering cost is 1
  • a new channel nominal filtering cost of each of the available routing channels on the newly added optical signal can be calculated.
  • the nominal channel filtering cost of the added channel is a change value of a nominal filter cost of the wavefront of the newly added optical signal and the wavefront of the newly added optical signal, the channel nominal filtering
  • the cost is the sum of the nominal filtering costs of the nodes of the nodes through which the routing passes, and the nominal filtering cost of the nodes is the sum of the nominal filtering costs of the windows of the filtering windows on the nodes.
  • the node nominal filtering cost is a sum of window nominal filtering costs of each filtering window on the node, and specifically includes:
  • the node nominal filtering cost is a weighted summation of the window nominal filtering cost of each filtering window on the node and the filtering window weight value.
  • the nominal filter cost of the channel is the sum of the node nominal filtering costs of the nodes through which the routing channel passes, including:
  • the nominal filter cost of the channel is a weighted summation of the node nominal filtering cost of each node through which the routing channel passes and the routing channel weight value.
  • the nominal channel filtering cost of the newly added optical signal after the wave is calculated by the following formula:
  • i is the sequence number of the routing channel in the set of available routing channels, and i is an integer greater than or equal to 0, and ⁇ C i is the new addition of the i-th routing channel after the wave on the newly added optical signal
  • M i is the nominal filtering cost of the channel of the i-th routing channel after the wave on the newly added optical signal
  • N i is the i-th routing wave of the wavefront of the newly added optical signal
  • the channel nominal filtering cost N i of the i-th routing channel of the wavefront on the newly added optical signal is calculated by the following formula:
  • ⁇ j is the Add the weight value of the i-th routing channel on the wavefront of the optical signal
  • j is an integer, and j ⁇ [1,m];
  • the nominal filtering cost R j of the node of the i-th routing channel on the j-th node of the newly added optical signal is calculated by the following formula:
  • n ij is the number of filtering windows of the i-th routing channel at the j-th node on the newly added optical signal
  • ⁇ k is the weight value of the wavefront filtering window on the newly added optical signal
  • k is Integer, and k ⁇ [1,n ij ];
  • the channel nominal filtering cost M i of the i-th routing channel after the wave on the newly added optical signal is calculated by the following formula:
  • ⁇ ′ j is The weight value of the i-th routing channel after adding the wave on the optical signal, j is an integer, and j ⁇ [1,m];
  • the nominal filtering cost S j of the node of the i-th routing channel at the jth node of the newly added optical signal is calculated by the following formula:
  • n' ij is the number of filtering windows of the i-th routing channel at the j-th node after the wave on the newly added optical signal
  • ⁇ ' k is the weighting value of the filtering window after the wave of the newly added optical signal
  • k is an integer and k ⁇ [1, n' ij ].
  • the above ⁇ j , ⁇ ′ j , ⁇ k , and ⁇ ′ k may take a value of 1 for ease of understanding and calculation.
  • the node nominal filtering cost of a node is equal to the number of filtering windows.
  • it may be configured according to the service priority and/or the distance between two adjacent filtering windows according to the newly added optical signal. For example, if the filtering window of the upper wavefront has a higher priority, the higher weight value can be configured for the window.
  • the preset threshold can be set to 0 or 1.
  • the threshold can even be a negative number.
  • the routing channel can be assigned to the newly added optical signal according to the newly added nominal filtering cost, except for setting In addition to the predetermined threshold for screening, of course, it is also possible to sort the routing channels from small to large according to the nominal filtering cost of the new wave after the upper wave, and select the routing channel with the top ranking for the newly added optical signal. wave.
  • the allocating the routing channel for the newly added optical signal specifically includes:
  • the routing channel with the least cost of the newly added nominal filtering is allocated to the newly added optical signal.
  • the routing channel for the newly added optical signal specifically includes:
  • the routing channel is allocated to the newly added optical signal based on the following at least one reference information:
  • the total length of the path the number of path nodes, or the service requirement of the newly added optical signal.
  • the route length can be further filtered based on the total length of the path.
  • the longer the total path length the power requirement of the signal.
  • the higher, and in order to increase the power will also amplify the noise synchronously, which has an adverse effect. Therefore, in the case where the new channel nominal filtering cost is the same, the routing channel with a shorter total path length may be preferentially assigned to the newly added optical signal; and the routing channel with a larger number of path nodes is inevitably Each node will have energy loss of some signals.
  • the routing channel with fewer path nodes can be preferentially allocated to the newly added optical signal to reduce energy loss;
  • the service requirement of the enhanced optical signal when it specifies a certain routing channel or the notification system reserves the resources of a certain routing channel, can be allocated based on the service requirement of the newly added optical signal.
  • the above reference information may be considered separately or in combination, and the embodiment of the present invention is not limited thereto.
  • the current carrying capacity of the wavelength division system, the requirements of other existing service lights, and the like are considered, and the embodiments of the present invention are also not limited.
  • FIG. 2 is a schematic diagram of a network topology structure between ABCDEF nodes;
  • FIG. 3 is a schematic diagram of current occupancy of each node exit channel shown in FIG. 2;
  • FIG. The method shown in FIG. 1 is a schematic diagram of calculating the cost of the nominal channel filtering of the new channel of the routing channel.
  • the first node of the newly added optical signal is A
  • the last node is A. It can be calculated by the routing algorithm.
  • the available paths include ABCD, AFED, ABFED, and AFECD.
  • the current channel occupancy on the four paths is known, as shown in FIG. 3, wherein the shaded block is the occupied channel, and the blank block is the idle channel.
  • the four paths in the available path set will be The nodes are combined to obtain the available routing channel set as shown in FIG. 5.
  • the blank coherent area in which the horizontal line traverses is an available routing channel.
  • the new channel filtering cost of each routing channel can be calculated.
  • the first routing channel takes the filter window weight value before and after the wave on the newly added optical signal and the routing channel weight values ( ⁇ j , ⁇ ′ j , ⁇ k , and ⁇ ′ k ) are all 1
  • the new route channel with the smaller nominal filter cost is more suitable for the upper wave channel of the newly added optical signal.
  • a set of routing channels whose nominal channel filtering cost is less than a certain preset threshold as a preferred set for use in subsequent channel allocation.
  • a channel with a nominal channel filtering cost of no more than -1 can be selected as a preferred set (two in the figure), because the selection in this set allows the new channel to be nominally filtered.
  • the cost is reduced; the limit can also be relaxed, and the channel with the new channel nominal filtering cost not greater than 1 is selected as the preferred set (there are 7 in the figure).
  • the routing channel with the same cost for the new channel nominal filtering is shown in Figure 5.
  • the new channel in ABCD and ABFED has a nominal channel filtering cost of -1, which can be further based on the path of the routing channel.
  • the length, the number of path nodes, or the service requirements of the newly added optical signal are selected. For example, the route channel ABCD with fewer path nodes can be selected for allocation.
  • This method is used to calculate the nominal channel filtering cost of the new channel of the routing channel.
  • the calculation is simple and can improve the system working efficiency. Selecting the channel with the new channel nominal filtering cost can reduce the filtering window and filtering times as much as possible.
  • the filtering cost of the new upper wave is small, but also the filtering cost of the adjacent channel of the upper wave channel can be reduced, thereby reducing the signal light attenuation and improving the power attenuation problem of the existing channel.
  • FIG. 5 it is a schematic diagram of a first embodiment of a device for allocating channels according to the present invention.
  • the device includes:
  • the obtaining unit 100 is configured to obtain an available routing channel set between the starting node and the destination node of the newly added optical signal;
  • the calculating unit 200 is configured to calculate a new channel nominal filtering cost of each of the routing channels in the available routing channel after the wave on the newly added optical signal, where the added channel nominal
  • the filtering cost is a variation value of the nominal filtering cost of the wavefront on the newly added optical signal and the wavefront on the newly added optical signal, and the nominal filtering cost of the channel is the node passing through the routing channel
  • the sum of the node nominal filtering costs, the node nominal filtering cost is the sum of the window nominal filtering costs of the filtering windows on the node;
  • the allocating unit 300 allocates a routing channel to the newly added optical signal in a routing channel corresponding to a new channel nominal filtering cost less than or equal to a preset threshold.
  • the node nominal filtering cost is a sum of window nominal filtering costs of each filtering window on the node, and specifically includes:
  • the node nominal filtering cost is a weighted summation of the window nominal filtering cost of each filtering window on the node and the filtering window weight value.
  • the nominal filtering cost of the channel is the sum of the nominal filtering costs of the nodes of the nodes through which the routing channel passes, and specifically includes:
  • the nominal filter cost of the channel is a weighted summation of the node nominal filtering cost of each node through which the routing channel passes and the routing channel weight value.
  • the calculating unit 200 is specifically configured to calculate, by using the following formula, a new channel nominal filtering cost after each of the routing channels in the available routing channel set on the newly added optical signal:
  • i is the sequence number of the routing channel in the set of available routing channels, and i is an integer greater than or equal to 0, and ⁇ C i is the new addition of the i-th routing channel after the wave on the newly added optical signal
  • M i is the nominal filtering cost of the channel of the i-th routing channel after the wave on the newly added optical signal
  • N i is the i-th routing wave of the wavefront of the newly added optical signal
  • the calculating unit 200 is specifically configured to calculate a channel nominal filtering cost N i of the i-th routing channel of the wavefront on the newly added optical signal by using the following formula:
  • ⁇ j is the Add the weight value of the i-th routing channel on the wavefront of the optical signal
  • j is an integer, and j ⁇ [1,m];
  • the node nominal filtering cost R j of the i-th routing channel of the wavefront at the jth node on the newly added optical signal is calculated by the following formula:
  • n ij is the number of filtering windows of the i-th routing channel at the j-th node on the newly added optical signal
  • ⁇ k is the weight value of the wavefront filtering window on the newly added optical signal
  • k is Integer, and k ⁇ [1,n ij ];
  • ⁇ ′ j is The weight value of the i-th routing channel after adding the wave on the optical signal, j is an integer, and j ⁇ [1,m];
  • n' ij is the number of filtering windows of the i-th routing channel at the j-th node after the wave on the newly added optical signal
  • ⁇ ' k is the weighting value of the filtering window after the wave of the newly added optical signal
  • k is an integer and k ⁇ [1, n' ij ].
  • the allocation unit 300 is further configured to:
  • the routing channel with the least cost of the newly added nominal filtering is allocated to the newly added optical signal.
  • the allocation unit 300 is further configured to: if the number of routing channels with the minimum cost of the new channel nominal filtering is greater than one, the allocation unit 300 is further configured to:
  • the routing channel is allocated to the newly added optical signal based on the following at least one reference information:
  • the total length of the path the number of path nodes, or the service requirement of the newly added optical signal.
  • the foregoing obtaining unit 100, the calculating unit 200, and the allocating unit 300 may exist independently or in an integrated manner.
  • the obtaining unit 100, the calculating unit 200, or the allocating unit 300 may be independent of the distributed wave in the form of hardware.
  • the processor of the device is separately provided and can be in the form of a microprocessor; it can also be embedded in the processor of the device in hardware, or can be stored in the memory of the device in software, so as to facilitate The processor of the device invokes an operation corresponding to the above acquisition unit 100, calculation unit 200, or allocation unit 300.
  • the computing unit 200 may be a processor of the device that allocates the channels, and the functions of the obtaining unit 100 and the allocating unit 300 may be embedded.
  • the processor it can also be set separately from the processor, or can be stored in the memory in the form of software, and the function is called by the processor.
  • the embodiment of the invention does not impose any limitation.
  • the above processor may be a central processing unit (CPU), a microprocessor, a single chip microcomputer, or the like.
  • FIG. 6 it is a schematic diagram of a second embodiment of a device for allocating channels according to the present invention.
  • the device includes:
  • the processor 600 stores a set of program codes
  • the processor 700 is configured to invoke the program code stored in the memory 600 to perform the following operations:
  • the new channel nominal filtering cost is the new a variation value of a nominal filter cost of the wavefront after the wave on the enhanced signal and the wavefront on the newly added optical signal, the nominal filter cost of the channel being the nominal filtering cost of the nodes of the route through which the routing channel passes And the node nominal filtering cost is the sum of the window nominal filtering costs of the filtering windows on the node;
  • a routing channel is allocated to the newly added optical signal in a routing channel corresponding to a new channel nominal filtering cost less than or equal to a preset threshold.
  • the node nominal filtering cost is a sum of window nominal filtering costs of each filtering window on the node, and specifically includes:
  • the node nominal filtering cost is a weighted summation of the window nominal filtering cost of each filtering window on the node and the filtering window weight value.
  • the nominal filtering cost of the channel is the sum of the nominal filtering costs of the nodes of the nodes through which the routing channel passes, and specifically includes:
  • the nominal filter cost of the channel is a weighted summation of the node nominal filtering cost of each node through which the routing channel passes and the routing channel weight value.
  • the processor 700 is specifically configured to calculate, by using the following formula, a new channel nominal filtering cost of each routing channel in the available routing channel set after the wave on the newly added optical signal:
  • i is the sequence number of the routing channel in the set of available routing channels, and i is an integer greater than or equal to 0, and ⁇ C i is the new addition of the i-th routing channel after the wave on the newly added optical signal
  • M i is the nominal filtering cost of the channel of the i-th routing channel after the wave on the newly added optical signal
  • N i is the i-th routing wave of the wavefront of the newly added optical signal
  • the processor 700 is specifically configured to calculate a channel nominal filtering cost N i of the i-th routing channel of the wavefront on the newly added optical signal by using the following formula:
  • ⁇ j is the Add the weight value of the i-th routing channel on the wavefront of the optical signal
  • j is an integer, and j ⁇ [1,m];
  • the node nominal filtering cost R j of the i-th routing channel of the wavefront at the jth node on the newly added optical signal is calculated by the following formula:
  • n ij is the number of filtering windows of the i-th routing channel at the j-th node on the newly added optical signal
  • ⁇ k is the weight value of the wavefront filtering window on the newly added optical signal
  • k is Integer, and k ⁇ [1,n ij ];
  • ⁇ ′ j is The weight value of the i-th routing channel after adding the wave on the optical signal, j is an integer, and j ⁇ [1,m];
  • n' ij is the number of filtering windows of the i-th routing channel at the j-th node after the wave on the newly added optical signal
  • ⁇ ' k is the weighting value of the filtering window after the wave of the newly added optical signal
  • k is an integer and k ⁇ [1, n' ij ].
  • the processor 700 is further configured to:
  • the routing channel with the least cost of the newly added nominal filtering is allocated to the newly added optical signal.
  • the processor 700 is also used to:
  • the routing channel is allocated to the newly added optical signal based on the following at least one reference information:
  • the total length of the path the number of path nodes, or the service requirement of the newly added optical signal.
  • the present invention has the following advantages:
  • the filtering effect of the existing optical signal and the newly added optical signal is reduced as much as possible, and the filtering window and the filtering times are reduced, thereby reducing the optical signal attenuation and improving the power imbalance, without adding hardware.
  • the cost can increase the link budget, which not only ensures the filtering cost of the newly added optical signal, but also reduces the filtering effect of the existing optical signal, improves the power attenuation problem of the existing channel, and defines the nominal filtering.
  • simple quantization calculation of the filtering effect intensity can be realized, which makes the channel distribution more accurate, and can also improve the efficiency of automatic calculation and allocation.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un procédé d'attribution d'un canal d'ondes, comportant les étapes consistant à: acquérir un ensemble de canaux d'ondes d'itinéraire disponibles d'un signal optique nouvellement ajouté entre un nœud de départ et un nœud de destination; calculer un coût nominal de filtrage de canaux d'ondes nouvellement ajoutés de chaque canal d'ondes d'itinéraire dans l'ensemble de canaux d'ondes d'itinéraire disponibles après que le signal optique nouvellement ajouté a fait l'objet d'une ondulation; et attribuer un canal d'ondes d'itinéraire au signal optique nouvellement ajouté dans le canal d'ondes d'itinéraire correspondant au coût nominal de filtrage de canal d'ondes nouvellement ajouté qui est inférieur ou égal à une valeur seuil prédéfinie. L'invention concerne également un appareil d'attribution d'un canal d'ondes. Au moyen de la présente invention, le problème d'un effet de filtrage sérieux causé par une dispersion d'attribution des canaux d'ondes est résolu.
PCT/CN2015/074599 2015-03-19 2015-03-19 Procédé et appareil d'attribution d'un canal d'ondes WO2016145658A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7054562B1 (en) * 2002-02-01 2006-05-30 Ciena Corporation Method and system for suppressing ASE on a WDM network
CN101984673A (zh) * 2010-11-12 2011-03-09 中兴通讯股份有限公司 无源光网络及其信号的传输方法
CN101990138A (zh) * 2009-07-31 2011-03-23 华为技术有限公司 一种波长调度方法和装置
CN102594688A (zh) * 2012-02-22 2012-07-18 中兴通讯股份有限公司 一种网络的路由选取方法和系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2121955C (fr) * 1993-04-23 1999-05-11 Mitsuru Yamamoto Ethode de transmission d'informations entre terminaux dans un reseau utilisant des faisceaux lumineux de longueurs d'onde diverses, terminaux utilises dans cette methode et reseauutilisant cette methode
US6334219B1 (en) * 1994-09-26 2001-12-25 Adc Telecommunications Inc. Channel selection for a hybrid fiber coax network
US20030011846A1 (en) * 2001-07-11 2003-01-16 Masoud Gholamhosseini Method and apparatus for network link planning
CN100356716C (zh) * 2003-12-19 2007-12-19 杨淑雯 基于光码标志交换的全光网
RU2584448C2 (ru) * 2011-05-24 2016-05-20 Хуавэй Текнолоджиз Ко., Лтд. Способ и устройство выбора маршрута

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7054562B1 (en) * 2002-02-01 2006-05-30 Ciena Corporation Method and system for suppressing ASE on a WDM network
CN101990138A (zh) * 2009-07-31 2011-03-23 华为技术有限公司 一种波长调度方法和装置
CN101984673A (zh) * 2010-11-12 2011-03-09 中兴通讯股份有限公司 无源光网络及其信号的传输方法
CN102594688A (zh) * 2012-02-22 2012-07-18 中兴通讯股份有限公司 一种网络的路由选取方法和系统

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