JP2013207480A - Optical transmission apparatus controller and control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control the transfer performance of a transmission device by determining the traffic on the line side by utilizing the maximum bit rate information of signal light and the signal light bandwidth information under use, when the super channel signal light is used in the DWDM network to which a flexible grid is applied.SOLUTION: The optical transmission apparatus controller of the super channel signal light, capable of controlling the number of carriers of signal light depending on the transmission capacity, calculates the total transmission capacity of an optical transmission apparatus, calculates the total transmission capacity of an optical transmission apparatus under use, and then calculates the load factor of an optical transmission apparatus from the total transmission capacity and the total transmission capacity under use, before instructing transfer performance control of an optical transmission apparatus based on the load factor.

Description

  The present invention is a technique relating to adaptive control of the traffic amount of an optical transmission device in an optical transmission system in the field of optical communication.

  In recent years, research and development of super channel signal light technology has been promoted (Non-patent Document 1). With super channel signal light, it is possible to realize signal light having a desired transmission capacity by multiplexing a plurality of signal light carriers. In addition, a flexible grid has been defined so far in order to efficiently accommodate variable capacity signal light such as super channel signal light (Non-Patent Document 2). With super channel signal light, the number of signal light carriers can be controlled in accordance with the transmission capacity. Therefore, if the transfer capability of the optical transmission apparatus to be used can be controlled in accordance with the transfer capacity, Power saving is possible.

  However, current optical transmission devices are always operating with full power transfer capability regardless of the amount of traffic to be transferred. For this reason, when there is little traffic volume, there exists a problem that electric power is consumed wastefully. As an example of an attempt to solve this problem, Non-Patent Document 3 discloses a method of suppressing power consumption by controlling an Ethernet (registered trademark) interface according to the amount of traffic. Patent Document 1 devises a method of realizing power saving by specifying a traffic transmission time and a transmission period to be transferred to a signaling message so as to adapt the traffic amount to control the transfer performance of the router. In Patent Document 2, a method has been devised that realizes power saving of a device by controlling the number of interfaces of a transmission device to be used according to the number of link aggregations of a client interface. Japanese Patent Application Laid-Open No. 2004-133867 devises a method of realizing power saving of the apparatus by controlling the signal transmission capacity on the line side in cooperation with the traffic amount on the client side.

JP 2009-147615 A JP 2010-283571 A JP 2010-245809 A

Infinera white paper, “Super-Channels DWDM Transmission Beyond 100Gb / s,” Document Number: WP-SC-12-2011 ITU-T Recommendation G.694.1 “Spectral grids for WDM applications: DWDM frequency grid” IEEE Std. 802.3az-2010 Yasuki Sakurai,, Masahiro Kawasugi, Yuji Hotta, MD. Saad Khan, Hisashi Oguri, Katsuyoshi Takeuchi, Sachiko Michihata, and Noboru Uehara “LCOS-Based 4x4 Wavelength Cross-Connect Switch For Flexible Channel Management in ROADMs,” OTuM4, OFC / NFOEC2012 . OIF IA # OIF-OFP-01.0 “OTN Over Packet Fabric Protocol (OFP) Implementation Agreement,” November 2011.

  When control of transfer performance adapted to the traffic volume is executed, it is necessary to determine the traffic volume in the transmission apparatus. As a method for determining the traffic volume, the above-mentioned Non-Patent Document 3, Patent Document 1, Patent Document 2, and Patent Document 3 have been reported so far. Non-Patent Document 3 is limited to an Ethernet interface whose control target is a client-side interface. In Patent Document 1, transfer performance control based on a signaling message is performed, but this is applied to a router, and the wavelength multiplexed signal optical transmission apparatus does not support the signaling message. In Patent Document 2, the traffic volume is determined based on the number of links in the client side link aggregation, but the traffic volume of the line side interface cannot be determined. Also in Patent Document 3, the traffic volume is determined based on the traffic volume on the client side. As described above, the device adopts a method of controlling the device transfer performance based on the traffic amount judgment based on the traffic amount on the client side, but does not control the transfer performance based on the traffic amount on the line side. There is a problem.

  The bit rate of the signal light can be identified by acquiring the setting information of the network device via the Network Management System (NMS) or Element Management System (EMS). However, when the interface between different vendor devices is connected, the NMS or EMS If interconnectivity is not ensured, there is a problem that information of signal light cannot be handled uniformly. In addition, since the conventional DWDM (Dense Wavelength Division Multiplexing) signal light is a fixed bit rate signal, the number of signal lights and the total capacity have a unique relationship. However, the bit rate can be changed arbitrarily for super channel signal light. Therefore, the number of signal lights does not necessarily match the total transmission capacity. Therefore, there is a problem that it is difficult to control the transfer performance based on the traffic amount on the line side.

  Therefore, the present invention uses line-side traffic by utilizing the maximum bit rate information of signal light and the signal light bandwidth information used when super channel signal light is used in a DWDM network to which a flexible grid is applied. An object of the present invention is to provide an optical transmission device control device and a control method for determining the amount and controlling the transfer performance of the transmission device.

  In order to solve the above problems, an optical transmission apparatus control apparatus according to the present invention controls a super-channel optical signal transmission apparatus that can multiplex a plurality of signal optical carriers and control the number of signal optical carriers according to the transmission capacity. A first calculation means for calculating a total transmission capacity of the optical transmission apparatus; a second calculation means for calculating a total transmission capacity in use of the optical transmission apparatus; the total transmission capacity and the use Third calculation means for calculating the load factor of the optical transmission device from the total transmission capacity therein, and command means for instructing transfer performance control of the optical transmission device based on the load factor.

  Further, it further comprises means for holding the maximum bandwidth of the super channel signal light and the maximum value of the bit rate, and means for acquiring signal light bandwidth information during use of each channel of the super channel signal light, The first calculation means is means for calculating the total transmission capacity of the optical transmission device from the maximum bandwidth and the maximum value of the bit rate, and the second calculation means is the signal light band in use. It is also preferable that it is a means for calculating the total transmission capacity in use from the width information.

  Further, it is preferable that the command unit is a unit that commands to increase the transfer performance of the optical transmission device as the load factor increases.

  The command means commands control of the clock, voltage, or number of cores of the CPU of the optical transmission device, and the higher the load factor, the higher the control frequency of the CPU, the higher the control voltage of the CPU, or the CPU It is also preferable to increase the number of operating cores.

  In order to solve the above problems, an optical transmission device control method according to the present invention multiplexes a plurality of signal light carriers and controls the number of signal light carriers according to the transmission capacity. A first calculation step for calculating a total transmission capacity of an optical transmission apparatus, a second calculation step for calculating a total transmission capacity in use of the optical transmission apparatus, the total transmission capacity and the use A third calculation step of calculating a load factor of the optical transmission device from a total transmission capacity therein, and an instruction step of instructing transfer performance control of the optical transmission device based on the load factor.

  In the present invention, the transfer performance of the optical transmission device can be controlled according to the traffic amount on the line side, so that the device power consumption can be reduced when the traffic amount is small. In the present invention, since the transfer performance can be controlled on the basis of the maximum traffic volume that can be processed, even when a sudden fluctuation occurs in the client traffic volume accommodated in the line-side interface. Therefore, it is possible to prevent a phenomenon in which the response is delayed and the transmission characteristics deteriorate (generation of loss of signal or loss of frame). Further, in the present invention, since the signal light bandwidth information is acquired from the optical signal multiplexing / demultiplexing part, there is an effect that it is not necessary to consider the interconnection between devices.

1 shows an outline of an optical transmission apparatus and an optical transmission apparatus control apparatus according to the present invention. 3 shows a flowchart describing a series of operations of the optical transmission apparatus.

  The best mode for carrying out the present invention will be described in detail below with reference to the drawings. FIG. 1 shows an outline of an optical transmission apparatus and an optical transmission apparatus control apparatus according to the present invention.

  The optical transmission device control device includes a control unit 1, and the optical transmission device includes a signal light demultiplexer 2, a receiver 3, a switch fabric 4, a transmitter 5, and a signal light multiplexer 6.

  The control unit 1 controls each function of the optical transmission apparatus. The functions to be controlled by the control unit 1 are the signal light demultiplexer 2, the signal light multiplexer 6, and the switch fabric 4 having the band variable optical filter function of the portion connected by the dotted line in the drawing.

  The signal light demultiplexer 2 has a function of demultiplexing input WDM signal light (the number of wavelengths is x, where x is an integer of 2 or more) for each wavelength. Further, the signal light demultiplexer 2 has a band variable optical filter function, and the band variable optical filter function has a function capable of variably controlling the bandwidth according to the grid width of the flexible grid (Non-Patent Document 2) (Non-Patent Document 4). ). It is assumed that this part can notify the control unit 1 of the bandwidth of each channel in use.

  The receiver 3 receives the signal light, converts it into an electrical signal, and transfers it to the switch fabric 4.

  The switch fabric 4 (Non-Patent Document 5) switches the data transferred from the receiver 3 to a desired transmitter 5. Here, it is assumed that the switch fabric 4 can perform load control according to the data processing amount (Patent Document 1).

  The transmitter 5 has a function of converting the data transferred from the switch fabric 4 from an electrical signal to an optical signal and transmitting the data.

  The signal light combiner 6 has a function of combining 1 to x signal lights. The signal optical multiplexer 6 includes a band variable optical filter, and the band variable optical filter has a function similar to that of the band variable optical filter on the reception side, and ensures the bandwidth of the signal light to be transmitted and allows the signal light to pass.

  Next, a flowchart describing a series of operations of the optical transmission apparatus is shown in FIG. The flowchart of FIG. 2 will be described below.

ステップ４：使用帯域情報取得、各チャネルの使用中の信号光帯域幅情報を取得し、制御部１において記憶する。ここでは、信号光分波器２と信号光合波器６の信号光帯域幅をそれぞれＢＷｒ_ｃ［ｉ］とＢＷｔ_ｃ［ｉ］とする。ただし、ｉはチャネル番号を示し、１〜ｎの整数とする。ｎは、システムによって決まる数値である。
ステップ５：伝送容量計算、ステップ２とステップ４の情報を用いて使用中の総伝送容量を下記のように計算する。

ステップ６：転送性能負荷計算、ステップ３とステップ５の情報を用いて転送性能負荷率を下記のように計算する。

ステップ７：負荷率？、ステップ６で求めた転送性能負荷率をαとする。ただし、αは０〜１の実数である。ここで、場合１〜場合（ｊ＋ｋ）のうちどの場合になるかを確認する。
場合１：０≦α＜β_［１］
場合２：β_［１］≦α＜β_［２］
・
・
・
場合ｊ：β_［ｊ］≦α＜β_{［ｊ＋１］}
場合ｊ＋ｋ：β_{［ｊ＋ｋ］}≦α≦１
ただし、β_［ｊ］は事前に任意の数値を設定しておくものとする。ただし、β_［ｊ］は０より大きく、１より小さい任意の実数とし、次のような関係であることとする。また、ｊとｋは０より大きい整数とする。
β_［１］＜β_［２］＜・・・＜β_［ｊ］＜β_{［ｊ＋１］}＜・・・＜β_{［ｊ＋ｋ］}＜１
ステップ８：負荷制御、ステップ７で確認した「場合」に応じて、スイッチファブリックの負荷制御を実行する。（参考：特許文献１）
場合１：制御［１］を実行する。
場合２：制御［２］を実行する。
・
・
・
場合ｊ：制御［ｊ］を実行する。
場合ｊ＋ｋ：制御［ｊ＋ｋ］を実行する。
ここで、各場合に応じた制御［ｊ］の設定は、下記のうちいずれかとする。
（１）ＣＰＵ（Central Processing Unit）のクロック制御の場合は、制御周波数を設定する。ここで、各制御における制御周波数［Ｈｚ］の関係は、制御［１］＜制御［２］＜・・・・＜制御［ｊ］＜制御［ｊ＋ｋ］とし、各制御の周波数は事前に設定しておくものとする。
（２）ＣＰＵ（Central Processing Unit）の電圧制御の場合は、制御電圧を設定する。ここで、各制御における制御電圧［Ｖ］の関係は、制御［１］＜制御［２］＜・・・・＜制御［ｊ］＜制御［ｊ＋ｋ］とし、各制御の電圧は事前に設定しておくものとする。
（３）ＣＰＵ（Central Processing Unit）のコア数制御の場合は、動作コア数を設定する。ここで、各制御における動作コア数の関係は、制御［１］＜制御［２］＜・・・・＜制御［ｊ］＜制御［ｊ＋ｋ］とし、各制御の動作コア数は事前に設定しておくものとする。
ステップ９： 終了？、終了しない場合は、ステップ４へ戻る。終了する場合はステップ１０へ進む。
ステップ１０：終了、終了する。 Step 1: Start, start the operation of the optical transmission device control device.
Step 2: Obtain each channel information, obtain the maximum value of the signal light bit rate of each channel of the signal light demultiplexer 2 and the signal light multiplexer 6, and the maximum bandwidth information of the signal light, and store them in the control unit 1 . The maximum bit rates of the channels on the signal light demultiplexer 2 side and the signal light multiplexer 6 side are BRr _[i] [Gb / s] and BRt _[i] [Gb / s], respectively, and the maximum bandwidth is BWr. Let _{max [i]} [GHz] and BWt _{max [i]} [GHz]. However, i represents a channel number and is an integer of 1 to n. n is a numerical value determined by the system.
Step 3: Calculate the total transmission capacity, based on the information acquired in Step 2 and the total transmission capacity.

Step 4: Use band information acquisition, signal light bandwidth information during use of each channel is acquired and stored in the control unit 1. Here, it is assumed that the signal light bandwidths of the signal light demultiplexer 2 and the signal light multiplexer 6 are BWr _{c [i]} and BWt _{c [i]} , respectively. However, i represents a channel number and is an integer of 1 to n. n is a numerical value determined by the system.
Step 5: Transmission capacity calculation, using the information in Step 2 and Step 4, the total transmission capacity in use is calculated as follows.

Step 6: Transfer performance load calculation, and using the information of Step 3 and Step 5, the transfer performance load factor is calculated as follows.

Step 7: Load factor? The transfer performance load factor obtained in step 6 is α. However, (alpha) is a real number of 0-1. Here, it is confirmed which of cases 1 to case (j + k) will be used.
Case 1: 0 ≦ α <β _[1]
Case 2: β _[1] ≦ α <β _[2]
・
・
・
Case j: β _[j] ≦ α <β _{[j + 1]}
Case j + k: β _{[j + k]} ≦ α ≦ 1
However, β _[j] is set to an arbitrary numerical value in advance. However, β _[j] is an arbitrary real number larger than 0 and smaller than 1, and has the following relationship. Also, j and k are integers greater than zero.
β _[1] <β _[2] <... <β _[j] <β _{[j + 1]} <... <β _{[j + k]} <1
Step 8: Load control, switch fabric load control is executed according to the “case” confirmed in step 7. (Reference: Patent Document 1)
Case 1: Control [1] is executed.
Case 2: Control [2] is executed.
・
・
・
Case j: Control [j] is executed.
Case j + k: Control [j + k] is executed.
Here, the setting of the control [j] corresponding to each case is one of the following.
(1) In the case of CPU (Central Processing Unit) clock control, a control frequency is set. Here, the relationship of the control frequency [Hz] in each control is control [1] <control [2] <... <Control [j] <control [j + k], and the frequency of each control is set in advance. Shall be kept.
(2) In the case of voltage control of a CPU (Central Processing Unit), a control voltage is set. Here, the relationship of the control voltage [V] in each control is control [1] <control [2] <... <Control [j] <control [j + k], and the voltage of each control is set in advance. Shall be kept.
(3) In the case of CPU (Central Processing Unit) core number control, the number of operating cores is set. Here, the relationship between the number of operating cores in each control is control [1] <control [2] <... <Control [j] <control [j + k], and the number of operating cores in each control is set in advance. Shall be kept.
Step 9: End? If not finished, return to Step 4. When the process ends, the process proceeds to Step 10.
Step 10: End, end.

  The first embodiment will be described using the following system.

In the 40-wave optical transmission system, the maximum bit rate of the signal light is set to 400 Gb / s, and it can be controlled to bit rates of 100 Gb / s and 40 Gb / s. The bandwidths of the band-variable optical filters when using the bit rates 400 Gb / s, 100 Gb / s, and 40 Gb / s are 100 GHz, 50 GHz, and 25 GHz, respectively. As a reference for the traffic load factor in this example, β _[1] = 0.5 and β _[2] = 0.75.

Accordingly, the control according to each load factor is as follows.
Case 1: 0 ≦ α <β _[1]
Case 2: β _[1] ≦ α <β _[2]
Case 3: β _[2] ≦ α ≦ 1

In addition, CPU clock control is commanded as control according to each case.
Case 1: The CPU clock is controlled to half of the maximum speed.
Case 2: The CPU clock is controlled to 75% of the maximum speed.
Case 3: The CPU clock is controlled to the maximum speed.

  In this example, the bandwidth of the band variable optical filter for 10 waves of channels 1 to 10 out of 40 waves is 50 GHz on both the transmitting and receiving sides, and the remaining 30 waves of channels 11 to 40 are on both transmitting and receiving sides. It is assumed that it is operating at 100 GHz. The operation will be described below according to the control flow.

となる。
ステップ４：使用帯域情報取得、各チャネルの使用中の信号光帯域幅情報を取得し制御部において記憶する。ここでは、信号光帯域幅をＢＷｒ_ｃ［１］〜ＢＷｒ_{ｃ［１０］}とＢＷｔ_ｃ［１］〜ＢＷｔ_{ｃ［１０］}は５０ＧＨｚである。また、ＢＷｒ_{ｃ［１１］}〜ＢＷｒ_{ｃ［４０］}とＢＷｔ_{ｃ［１１］}〜ＢＷｔ_{ｃ［４０］}は１００ＧＨｚである。
ステップ５：伝送容量計算、ステップ２とステップ４の情報を用いて使用中の総伝送容量を下記のように計算する。

ステップ６：転送性能負荷計算、ステップ３とステップ５の情報を用いて転送性能負荷率を下記のように計算する。

となる。
ステップ７：負荷率？、ここで、ステップ６で求めた転送性能負荷率は、下記の場合１〜場合３のうち、場合３になる。
場合１：０≦α＜０．５
場合２：０．５≦α＜０．７５
場合３：０．７５≦α≦１
ステップ８：負荷制御、ステップ７で確認した「場合」に応じて、スイッチファブリックの負荷制御を実行する。ここでは、場合３であるためＣＰＵクロックを最高速度に制御する。
場合１：ＣＰＵクロックを最高速度の半分に制御する。
場合２：ＣＰＵクロックを最高速度の７５％に制御する。
場合３：ＣＰＵクロックを最高速度に制御する。
ステップ９：終了？、終了するためステップ１０へ進む。
ステップ１０：終了、終了する Step 1: Start, start the operation of the optical transmission device control device.
Step 2: Acquisition of each channel information, the maximum value of the signal light bit rate of each channel, and the maximum bandwidth information of the signal light are acquired and stored in the control unit. Here, the maximum speed of each channel is BRr _[i] = BRt _[i] = 400 Gb / s, and the maximum bandwidth is BWr _{max [i]} = BWt _{max [i]} = 100 GHz.
Step 3: Calculate the total transmission capacity, based on the information acquired in Step 2, and calculate the total transmission capacity.

It becomes.
Step 4: Use band information acquisition, signal light bandwidth information during use of each channel is acquired and stored in the control unit. Here, the signal light bandwidths of BWr _{c [1] to} BWr _{c [10]} and BWt _{c [1] to} BWt _{c [10]} are 50 GHz. Also, BWrc _{[11] to} BWrc _[40] and BWtc _{[11] to} BWtc _[40] are 100 GHz.
Step 5: Transmission capacity calculation, using the information in Step 2 and Step 4, the total transmission capacity in use is calculated as follows.

Step 6: Transfer performance load calculation, and using the information of Step 3 and Step 5, the transfer performance load factor is calculated as follows.

It becomes.
Step 7: Load factor? Here, the transfer performance load factor obtained in step 6 is case 3 among the following cases 1 to 3.
Case 1: 0 ≦ α <0.5
Case 2: 0.5 ≦ α <0.75
Case 3: 0.75 ≦ α ≦ 1
Step 8: Load control, switch fabric load control is executed according to the “case” confirmed in step 7. Here, since it is case 3, the CPU clock is controlled to the maximum speed.
Case 1: The CPU clock is controlled to half of the maximum speed.
Case 2: The CPU clock is controlled to 75% of the maximum speed.
Case 3: The CPU clock is controlled to the maximum speed.
Step 9: End? , Go to step 10 to finish.
Step 10: Finish, finish

  The second embodiment will be described using the following system.

In the 40-wave optical transmission system, the maximum bit rate of the signal light is set to 400 Gb / s, and it can be controlled to bit rates of 100 Gb / s and 40 Gb / s. The bandwidths of the band-variable optical filters when using the bit rates 400 Gb / s, 100 Gb / s, and 40 Gb / s are 100 GHz, 50 GHz, and 25 GHz, respectively. As a reference for the traffic load factor in this example, β _[1] = 0.5 and β _[2] = 0.75.

Accordingly, the control according to each load factor is as follows.
Case 1: 0 ≦ α <β _[1]
Case 2: β _[1] ≦ α <β _[2]
Case 3: β _[2] ≦ α ≦ 1

In addition, CPU clock control is commanded as control according to each case.
Case 1: The CPU clock is controlled to half of the maximum speed.
Case 2: The CPU clock is controlled to 75% of the maximum speed.
Case 3: The CPU clock is controlled to the maximum speed.

  In this example, the bandwidth of the band variable optical filter for 10 waves of channels 1 to 10 out of 40 waves is 50 GHz on both the transmitting and receiving sides, and the bandwidth of the band variable optical filter is on the transmitting and receiving sides of channels 21 to 30. It is assumed that both are operating at 25 GHz and the remaining channels 31 to 40 are operating at 100 GHz on both the transmitting and receiving sides. The operation will be described below according to the control flow.

となる。
ステップ４：使用帯域情報取得、各チャネルの使用中の信号光帯域幅情報を取得し制御部において記憶する。ここでは、信号光帯域幅をＢＷｒ_ｃ［１］〜ＢＷｒ_{ｃ［１０］}とＢＷｔ_ｃ［１］〜ＢＷｔ_{ｃ［１０］}は５０ＧＨｚであり、ＢＷｒ_{ｃ［１１］}〜ＢＷｒ_{ｃ［３０］}とＢＷｔ_{ｃ［１１］}〜ＢＷｔ_{ｃ［３０］}は２５ＧＨｚである。また、ＢＷｒ_{ｃ［３１］}〜ＢＷｒ_{ｃ［４０］}とＢＷｔ_{ｃ［３１］}〜ＢＷｔ_{ｃ［４０］}は１００ＧＨｚである。
ステップ５：伝送容量計算、ステップ２とステップ４の情報を用いて使用中の総伝送容量を下記のように計算する。

ステップ６：転送性能負荷計算、ステップ３とステップ５の情報を用いて転送性能負荷率を下記のように計算する。

となる。
ステップ７：負荷率？、ここで、ステップ６で求めた転送性能負荷率は、下記の場合１〜場合３のうち、場合２になる。
場合１：０≦α＜０．５
場合２：０．５≦α＜０．７５
場合３：０．７５≦α≦１
ステップ８：負荷制御、ステップ７で確認した「場合」に応じて、スイッチファブリックの負荷制御を実行する。ここでは、場合２であるためＣＰＵクロックを最高速度の７５％に制御する。
場合１：ＣＰＵクロックを最高速度の半分に制御する。
場合２：ＣＰＵクロックを最高速度の７５％に制御する。
場合３：ＣＰＵクロックを最高速度に制御する。
ステップ９：終了？、終了するためステップ１０へ進む。
ステップ１０：終了、終了する。 Step 1: Start, start the operation of the optical transmission device control device.
Step 2: Acquisition of each channel information, the maximum value of the signal light bit rate of each channel, and the maximum bandwidth information of the signal light are acquired and stored in the control unit. Here, the maximum speed of each channel is BRr _[i] = BRt _[i] = 400 Gb / s, and the maximum bandwidth is BWr _{max [i]} = BWt _{max [i]} = 100 GHz.
Step 3: Calculate the total transmission capacity, based on the information acquired in Step 2, and calculate the total transmission capacity.

It becomes.
Step 4: Use band information acquisition, signal light bandwidth information during use of each channel is acquired and stored in the control unit. Here, the signal light bandwidths BWr _{c [1] to} BWr _{c [10]} and BWt _{c [1] to} BWt _{c [10]} are 50 GHz, and BWr _{c [11] to} BWr _{c [30]} and BWt _{c [11] to} BWt _{c [30]} are 25 GHz. BWrc _{[31] to} BWrc _[40] and BWtc _{[31] to} BWtc _[40] are 100 GHz.
Step 5: Transmission capacity calculation, using the information in Step 2 and Step 4, the total transmission capacity in use is calculated as follows.

Step 6: Transfer performance load calculation, and using the information of Step 3 and Step 5, the transfer performance load factor is calculated as follows.

It becomes.
Step 7: Load factor? Here, the transfer performance load factor obtained in step 6 is 2 in the following cases 1 to 3.
Case 1: 0 ≦ α <0.5
Case 2: 0.5 ≦ α <0.75
Case 3: 0.75 ≦ α ≦ 1
Step 8: Load control, switch fabric load control is executed according to the “case” confirmed in step 7. Here, since it is case 2, the CPU clock is controlled to 75% of the maximum speed.
Case 1: The CPU clock is controlled to half of the maximum speed.
Case 2: The CPU clock is controlled to 75% of the maximum speed.
Case 3: The CPU clock is controlled to the maximum speed.
Step 9: End? , Go to step 10 to finish.
Step 10: End, end.

  Moreover, all the embodiments described above are illustrative of the present invention and are not intended to limit the present invention, and the present invention can be implemented in other various modifications and changes. Therefore, the scope of the present invention is defined only by the claims and their equivalents.

DESCRIPTION OF SYMBOLS 1 Control part 2 Signal beam splitter 3 Receiver 4 Switch fabric 5 Transmitter 6 Signal beam multiplexer

Claims (5)

A super-channel signal light optical transmission device controller capable of multiplexing a plurality of signal light carriers and controlling the number of signal light carriers according to the transmission capacity,
First calculating means for calculating the total transmission capacity of the optical transmission device;
Second calculating means for calculating a total transmission capacity in use of the optical transmission device;
Third calculation means for calculating a load factor of the optical transmission device from the total transmission capacity and the total transmission capacity in use;
Command means for commanding transfer performance control of the optical transmission device based on the load factor;
An optical transmission device control device comprising: Means for holding a maximum bandwidth and a maximum bit rate of the super channel signal light;
Means for acquiring signal light bandwidth information during use of each channel of the super channel signal light;
Further comprising
The first calculation means is means for calculating a total transmission capacity of the optical transmission device from the maximum bandwidth and the maximum value of the bit rate,
2. The optical transmission device control device according to claim 1, wherein the second calculation unit is a unit that calculates the total transmission capacity in use from the signal light bandwidth information in use. 3.   The optical transmission device control device according to claim 1, wherein the command unit is a device that commands to increase the transfer performance of the optical transmission device as the load factor increases.   The command means commands control of the clock, voltage, or number of cores of the CPU of the optical transmission device, and the higher the load factor, the higher the control frequency of the CPU, the higher the control voltage of the CPU, or the operation of the CPU. 4. The optical transmission device control device according to claim 1, wherein the number of cores is increased. A super-channel signal light optical transmission device control method capable of multiplexing a plurality of signal light carriers and controlling the number of signal light carriers according to the transmission capacity,
A first calculation step of calculating a total transmission capacity of the optical transmission device;
A second calculation step of calculating a total transmission capacity in use of the optical transmission device;
A third calculation step of calculating a load factor of the optical transmission device from the total transmission capacity and the total transmission capacity in use;
An instruction step for instructing transfer performance control of the optical transmission device based on the load factor;
An optical transmission device control method comprising:

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