JP6382485B2 - Transmission apparatus and data transmission method - Google Patents

Description

  The present invention relates to a transmission apparatus and a data transmission method, and more particularly to a transmission apparatus and a data transmission method capable of saving the scale and power consumption of the apparatus when switching data processing methods.

  Generally, it is connected to a plurality of transmission apparatuses that handle different types of data, processes data corresponding to one of the plurality of transmission apparatuses, and transmits the processed data to the one transmission apparatus. There is a transmission device. When this transmission device switches to data processing corresponding to another transmission device among a plurality of transmission devices, generally, the data processing method in this transmission device is changed to a data processing method corresponding to another transmission device. Switch.

Patent Document 1 discloses a technique for detecting a data processing method of an opposing transmission apparatus and switching its own data processing method.
The transmission device disclosed in Patent Literature 1 includes a plurality of transmission path optical interface units, a selection unit, an optical folding unit, an optical signal detection unit, and a monitoring control unit. This transmission apparatus is connected to another transmission apparatus that is opposed to the transmission apparatus via a transmission path. The plurality of transmission path optical interface units are interfaces that are always in operation and transmit data by a frame corresponding to each transmission path. Each transmission path has a different transmission path capacity. The optical return unit specifies the return setting for returning the optical signal from the opposite transmission apparatus to the opposite transmission apparatus as it is, and the return cancellation setting for canceling the return setting corresponding to the type of the transmission path optical interface. Repeatedly at the time interval. The optical signal detection unit receives an optical signal from the opposing transmission device. The monitoring control unit determines the time interval between the loopback setting that is repeatedly performed by the optical loopback unit and the loopback cancellation setting that cancels the loopback setting. The selection unit selects one transmission path optical interface unit from the plurality of transmission path optical interface units based on the instruction.

  The transmission apparatus determines the transmission path optical interface type used by the opposite transmission apparatus (for example, in the transmission path) based on the time interval between the loopback setting and loopback cancellation setting that is repeatedly performed by the optical loopback unit, as determined by the monitoring control unit. A corresponding frame, that is, a data processing method) is specified. Then, the selection unit is instructed to switch to the transmission path optical interface unit of the identified transmission path optical interface type. The selection unit selects one transmission path optical interface unit from a plurality of transmission path optical interface units that are always in operation based on the instruction (that is, the selection unit selects from the plurality of data processing methods based on the instruction). Select one data processing method). The selected transmission line optical interface unit is connected to the opposite transmission apparatus via the transmission line.

  As described above, the transmission device disclosed in Patent Document 1 automatically recognizes the transmission path optical interface type (data processing method) on the opposite transmission device side. Then, one transmission path optical interface unit among a plurality of transmission path optical interface units that are always operating is used as a transmission path optical interface unit (data processing method) corresponding to the transmission path optical interface type of the opposing transmission apparatus. Select together. Then, the selected transmission line optical interface unit is switched as its own transmission line optical interface unit. Then, data via the switched transmission line optical interface unit is transferred from the transmission apparatus to the opposite transmission apparatus.

  That is, the transmission device disclosed in Patent Document 1 automatically recognizes the data processing method on the opposite transmission device side, selects one recognized data processing method from a plurality of data processing methods, and selects the selected data processing method. The data processed by the above method is transferred to the opposite transmission apparatus.

JP 2012-4957 A

  The transmission device described in Patent Document 1 described above automatically recognizes the data processing method of the opposite transmission device when switching to the data processing method of the opposite transmission device. Then, this recognized data processing method (transmission path optical interface unit) is selected from a plurality of data processing methods (transmission path optical interface unit) that are always in operation, and the data processed by the selected method To the opposite transmission device. For this reason, when switching to the data processing method of the opposite transmission device, this transmission device must always have a plurality of data processing methods (transmission path optical interface units) that are always in operation. There is a problem that power consumption increases.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and when switching data processing methods, it is not necessary to always have a plurality of data processing methods, and a transmission device and a data transmission method that can save the scale and power consumption of the device Is to provide.

  The transmission apparatus according to the present invention is a transmission apparatus connected to a plurality of opposing transmission apparatuses each handling a predetermined type of data, and firstly transmits / receives a predetermined type of data to / from the outside of the own transmission apparatus. And a plurality of second transmission / reception units that respectively transmit and receive the predetermined type of data to and from the plurality of opposite transmission devices, and the first transmission / reception unit and the second transmission / reception unit. Processing method data defining a data processing method corresponding to the predetermined type of data for performing a conversion process between the predetermined type of data and the predetermined type of data handled by the opposite transmission apparatus; The data processing method is switched by forming an internal circuit of its own data processing unit into a data processing method corresponding to the received processing method data, and the first transmitting / receiving unit and the first A data processing unit for converting and transferring data to and from the transmission / reception unit, and a plurality of processing method data corresponding to the predetermined type of data respectively handled by the plurality of opposing transmission devices, and transmitting / receiving the data A processing method selection unit that selects the processing method data corresponding to the opposite transmission apparatus and outputs the data to the data processing unit.

  The data transmission method of the present invention is a data transmission method of a transmission apparatus connected to a plurality of opposing transmission apparatuses each handling a predetermined type of data, and has a predetermined type received from the outside of the own transmission apparatus. A plurality of data processing methods for converting data and the predetermined type of data handled by the opposite transmission device, respectively, corresponding to the types of data handled by the opposite transmission devices; From the processing method data, the processing method data corresponding to the opposite transmission device to be transmitted / received is selected, and the internal circuit of its own transmission device is formed into a data processing method corresponding to the selected processing method data. The data processing method is switched, and data is transmitted between the outside of the own transmission device and the opposite transmission device based on the data processing method. So that it passes by converting each.

  According to the present invention, it is not necessary to always have a plurality of data processing methods when switching data processing methods, and it is possible to provide a transmission device and a data transmission method that can save the scale and power consumption of the device.

It is a figure which shows an example of the transmission apparatus which concerns on the 1st Embodiment of this invention. It is a figure which shows an example of the transmission apparatus which concerns on the 2nd Embodiment of this invention. It is a flowchart which shows an example of operation | movement of the transmission apparatus of the 2nd Embodiment of this invention.

Next, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a diagram illustrating an example of a transmission apparatus according to the first embodiment of the present invention.

  The transmission apparatus 1 according to the present embodiment is connected to a plurality of opposed transmission apparatuses each handling a predetermined type of data. The predetermined type of data includes, for example, data handled in a synchronous network including SDH (Synchronous Digital Hierarchy) and SONET (Synchronous Optical NETwork) and an asynchronous network including Ethernet (registered trademark). Opposing transmission devices include devices such as client transmission devices, routers, and media converters.

  The transmission apparatus 1 according to the present embodiment transmits data transmitted from another transmission apparatus to the currently designated counter transmission apparatus in the type of data handled by the counter transmission apparatus (for example, data handled by SDH). ) And output. In addition, the data transmitted from the opposite transmission device is converted into data of a predetermined type and output to other transmission devices. The predetermined type of data is data handled by, for example, OTN (Optical Transport Network).

  The transmission apparatus 1 according to the present embodiment includes a first transmission / reception unit 4, a plurality of second transmission / reception units 5, a data processing unit 2, and a processing method selection unit 3.

  The first transmission / reception unit 4 transmits / receives data of a predetermined type to / from the outside of its own transmission device 1 (for example, another transmission device). The first transmission / reception unit 4 is connected to another transmission device via, for example, an optical fiber transmission line.

  The plurality of second transmission / reception units 5 are respectively connected to a plurality of counter transmission apparatuses and transmit / receive predetermined types of data corresponding to the counter transmission apparatuses.

  The data processing unit 2 is provided between the first transmission / reception unit 4 and the second transmission / reception unit 5. Then, processing method data defining a data processing method for performing data conversion processing between data of a predetermined type and data of a predetermined type handled by the opposite transmission apparatus is received. The data processing method is a processing method according to a predetermined type of data. The processing method data includes processing method data for processing data handled in a synchronous network including SDH and SONET and an asynchronous network including Ethernet. Then, the data processing unit 2 switches the data processing method by forming the internal circuit of its own data processing unit 2 into a data processing method corresponding to the received processing method data, and the first transmission / reception unit 4 and the first transmission / reception unit 4 The data is converted between the two transmitting / receiving units 5 and transferred. The processing method selection unit 3 selects processing method data corresponding to the opposite transmission device to be transmitted / received from a plurality of processing method data corresponding to predetermined types of data handled by the plurality of opposite transmission devices, respectively, and the data processing unit 2 Output to.

  In FIG. 1, three counter transmission apparatuses are described, but the number may be two or more without being particular about the three.

  Next, the operation of the transmission apparatus according to this embodiment will be described.

  First, the transmission apparatus 1 itself transmits data transmitted from another transmission apparatus to the currently designated counter transmission apparatus in the type of data handled by the counter transmission apparatus (for example, data handled by SDH). ) And output. Further, the data transmitted from the opposite transmission apparatus is converted into data of a predetermined type (for example, data handled by OTN) and output to another transmission apparatus.

  The processing method selection unit 3 switches the processing method data corresponding to the type of data handled by the other opposite transmission device in order to switch the opposite transmission device to be transmitted / received from the currently designated opposite transmission device to another opposite transmission device. Select from a plurality of processing method data. The plurality of processing method data may be acquired from the outside or may be prepared in advance. Then, the selected processing method data is output to the data processing unit 2. The type of data handled by other counter transmission apparatuses is, for example, data handled by SONET.

  As the data processing unit 2, a circuit such as an integrated circuit whose configuration can be set is used, and is configured by, for example, an FPGA (Field-Programmable Gate Array). The configuration setting of the FPGA is generally specified using a hardware description language (HDL), and an arbitrary logical function can be implemented in the FPGA. In this case, the data processing unit 2 sets (reconfigures) the processing method data described in HDL output from the processing method selection unit 3 in the FPGA, whereby the second transmission / reception unit 5 corresponding to the opposite transmission apparatus. Can be formed in a circuit of a desired data processing system including the connection of the wiring. As a result, the data processing unit 2 can pass the converted data between the first transmission / reception unit 4 and the second transmission / reception unit 5. For this reason, the transmission apparatus 1 can pass the type of data handled by these apparatuses between the switched opposite transmission apparatus and other transmission apparatuses. The data processing unit 2 is not limited to the FPGA, and may be any circuit such as an integrated circuit whose configuration can be set.

  As described above, according to the first embodiment of the present invention, when switching the opposite transmission device for transmission / reception to another opposite transmission device, the processing method data corresponding to the type of data handled by the other opposite transmission device is changed. And selecting from a plurality of processing method data provided in advance. Then, the selected processing method data is output to the data processing unit 2. Then, based on the processing method data, the data processing unit 2 forms the internal circuit of its own data processing unit 2 in a data processing method corresponding to the processing method data. As a result, the data processing method is switched according to the other opposite transmission apparatus.

  For this reason, according to the first embodiment of the present invention, when a plurality of processing method data is prepared in advance and the data processing method is switched, data is obtained by processing method data selected from the plurality of processing method data prepared in advance. An internal circuit of the processing unit is formed. For this reason, when switching the data processing method, it is not always necessary to provide a plurality of data processing methods, and the scale and power consumption of the apparatus can be saved.

  Further, according to the first embodiment of the present invention, the data processing unit 2 is configured by a circuit whose configuration can be set, for example, an FPGA, so that the second corresponding to the counter transmission apparatus currently used. The wiring between the transmission / reception unit 5 and the data processing unit 2 is connected to the data processing unit 2. However, the wiring between the second transmission / reception unit 5 and the data processing unit 2 corresponding to the opposite transmission apparatus that is not currently used is disconnected from the internal circuit inside the data processing unit 2. For this reason, even if the wiring between the data processing unit 2 and the second transmission / reception unit 5 is always connected, the wiring corresponding to the opposite transmission device that is not used is disconnected from the internal circuit of the data processing unit 2. Therefore, there is no interference with the wiring corresponding to the opposite transmission device being used. For this reason, the wiring between the 2nd transmission / reception part 5 and the data processing part 2 corresponding to all the counter transmission apparatuses can be always connected.

Further, according to the first embodiment of the present invention, the processing method selection unit 3 obtains processing method data corresponding to the type of data handled by the other opposite transmission apparatus from a plurality of processing method data provided in advance. The data processing method is switched by selecting and setting the data processing unit 2. Then, data processing corresponding to the opposite transmission apparatus corresponding to the switched data processing method is performed. For this reason, it is possible to easily increase the number of counter transmission apparatuses simply by preparing in advance the processing method data corresponding to the counter transmission apparatuses for the number of counter transmission apparatuses. There is no limit to the number of expansions.
(Second Embodiment)
FIG. 2 is a diagram illustrating an example of a transmission apparatus according to the second embodiment of the present invention.

  In FIG. 2, a control monitoring unit 8 is added to the transmission apparatus 1 shown in FIG. Further, the processing method selection unit 3 is embodied.

  The second embodiment is a more specific operation of the transmission apparatus 1 of the first embodiment. Therefore, the difference from the first embodiment will be mainly described.

  The transmission apparatus 1 according to the present embodiment includes a first transmission / reception unit 4, a plurality of second transmission / reception units 5, a data processing unit 2, a processing method selection unit 3, and a control monitoring unit 8. The The processing method selection unit 3 includes a control unit 6 and a storage unit 7.

  The control monitoring unit 8 receives from the outside a switching instruction including an instruction for designating the opposite transmission device for switching the opposite transmission device whose transmission device 1 transmits and receives data. The outside is, for example, a centralized management device (not shown) that manages a network including its own transmission device 1 and other transmission devices connected to the first transmission / reception unit 4 of the transmission device 1. Then, the control monitoring unit 8 outputs a switching execution request for requesting switching to the opposite transmission apparatus designated by the switching instruction. The storage unit 7 of the processing method selection unit 3 stores a plurality of processing method data corresponding to each predetermined type of data handled by the plurality of opposite transmission apparatuses. The control unit 6 of the processing method selection unit 3 receives the switching execution request output from the control monitoring unit 8. Then, processing method data corresponding to the opposite transmission device that transmits / receives to / from its own transmission device 1 requested to be switched by this request is selected from the storage unit 7 and read. Then, the read processing method data is output to the data processing unit 2.

  The processing content of the data processing unit 2 may include, for example, data normality monitoring and traffic control in addition to data conversion. In FIG. 2, three counter transmission apparatuses are described, but the number may be two or more without being particular about the three.

  Next, the operation of the transmission apparatus 1 according to the second embodiment of the present invention will be described in detail with reference to FIG.

  FIG. 3 is a flowchart illustrating an example of the operation of the transmission apparatus according to the second embodiment of this invention.

  First, the transmission apparatus 1 itself transmits data transmitted from another transmission apparatus to the currently designated counter transmission apparatus in the type of data handled by the counter transmission apparatus (for example, data handled by SDH). ) And output. Further, the data transmitted from the opposite transmission apparatus is converted into data of a predetermined type (for example, data handled by OTN) and output to another transmission apparatus.

Then, the opposite transmission apparatus that is currently designated and transmitting / receiving is switched to another opposite transmission apparatus as follows. That is,
In step S1 of FIG. 3, the control monitoring unit 8 issues a switching instruction including an instruction for designating the opposite transmission device for switching the opposite transmission device with which the transmission device 1 transmits and receives data, for example, another transmission device. And from a centralized management device (not shown) that manages the transmission device 1.

In step S2 of FIG. 3, the control monitoring unit 8 checks whether or not the opposite transmission apparatus designated by the switching instruction received in step S1 is the opposite transmission apparatus currently designated and transmitting / receiving.
When the checked result indicates that the opposite transmission apparatus is currently designated and transmitting / receiving (in the case of YES), the process returns to step S1. When the checked result indicates that it is not the opposite transmission apparatus currently designated and transmitting / receiving (in the case of NO), the process proceeds to step S3.

  In step S3 of FIG. 3, the control monitoring unit 8 outputs a switching execution request for requesting switching to the opposite transmission apparatus specified by the switching instruction.

  In step S <b> 4 of FIG. 3, the control unit 6 of the processing method selection unit 3 receives the switching execution request output from the control monitoring unit 8. Then, the processing method data corresponding to the opposite transmission apparatus requested to be switched by this switching execution request is selected and read from the storage unit 7 storing a plurality of processing method data. Then, the read processing method data is output to the data processing unit 2.

  In step S5 of FIG. 3, the data processing unit 2 receives the processing method data from the processing method selecting unit 3, and based on this processing method data, the second transmitting / receiving unit 5 corresponding to the opposite transmission apparatus requested to switch. The internal circuit of the data processing unit 2 including the wiring connection is formed in a data processing method corresponding to this processing method data. That is, by setting (reconfiguring) the processing method data output from the processing method selection unit 3 in the FPGA, a circuit of a data processing method corresponding to the processing method data is formed. As a result, the data processing method of the data processing unit 2 is switched.

Therefore, according to the second embodiment of the present invention, the storage unit 7 of the processing method selection unit 3 previously stores a plurality of processing method data corresponding to each predetermined type of data handled by the plurality of opposite transmission apparatuses. Store. Then, the control unit 6 of the processing method selection unit 3 receives the switching execution request, selects processing method data corresponding to the opposite transmission apparatus requested to switch by this request, and outputs it. Then, the data processing unit 2 receives the processing method data and sets the processing method data. As a result, the data processing method of the data processing unit 2 is switched.
For this reason, the number of counter transmission devices can be easily increased simply by storing the processing method data corresponding to the counter transmission devices stored in the storage unit 7 for the number of counter transmission devices. There is no limit to the number of expansions. As described above, the second embodiment of the present invention has the same effect as that of the first embodiment of the present invention.

DESCRIPTION OF SYMBOLS 1 Transmission apparatus 2 Data processing part 3 Processing method selection part 4 1st transmission / reception part 5 2nd transmission / reception part 6 Control part 7 Storage part 8 Control monitoring part

Claims (10)

Each of the transmission devices is connected to a plurality of opposite transmission devices that handle a predetermined type of data,
A first transmission / reception unit that transmits / receives a predetermined type of data to / from the outside of the transmission device;
A plurality of second transceiver for transmitting and receiving the plurality of pairs direction transmission device and said predetermined type of data, respectively,
The predetermined that is provided between the first transmission / reception unit and the plurality of second transmission / reception units and that is handled by a predetermined opposite transmission device that transmits and receives the predetermined type of data and the plurality of opposite transmission devices. Receiving processing method data defining a data processing method corresponding to the predetermined type of data for performing conversion processing between the data of the predetermined type and transmitting the internal circuit of its own data processing unit to the predetermined opposite transmission apparatus including the connection wiring and the second transceiver unit corresponding to the form to correspond to only the data processing method corresponding to the received processing method data, said second transmitting and receiving between the first transceiver a data processing unit passing by convert the data to and from the part,
Said plurality of pairs toward the transmission apparatus from a plurality of processing schemes data corresponding to the data of the predetermined type handled respectively, by selecting the processing method data corresponding to the predetermined opposing transmission device, output to the data processing unit A processing method selection unit to perform,
A transmission apparatus comprising: Own transmission apparatus receives from the external inclusive a switching instruction an instruction specifying a predetermined opposing transmission device for switching the predetermined opposing transmission apparatus for transmitting and receiving data, to the specified predetermined opposing transmission device A control monitoring unit that outputs a switching execution request for requesting switching;
The processing method selection unit outputs the processing method data corresponding to the predetermined opposite transmission apparatus whose switching execution request requests switching to the data processing unit.
The transmission apparatus according to claim 1. The processing method selection unit
A storage unit for storing a plurality of said processing system data corresponding to the data of each of the predetermined type of said plurality of pairs direction transmission device handles,
Reading the processing method data corresponding to the previous SL predetermined opposing transmission device from the storage unit, a control unit for outputting a processing method data thus read out to the data processing unit,
The transmission apparatus according to claim 1, further comprising: The data processing unit is configured by a field-programmable gate array (FPGA), and the processing method selection unit sets the processing method data corresponding to the type of data handled by the predetermined opposite transmission apparatus in the FPGA. By switching the data processing method of the data processing unit,
The transmission apparatus according to claim 1, 2, or 3. The processing method data includes processing method data for processing data handled in a synchronous network including SDH (Synchronous Digital Hierarchy) and SONET (Synchronous Optical NETwork) and an asynchronous network including Ethernet.
The transmission apparatus according to claim 1, 2, 3 or 4. A data transmission method for a transmission device connected to a plurality of opposite transmission devices each handling a predetermined type of data,
In order to perform a conversion process between a predetermined type of data received from the outside of its own transmission device and the predetermined type of data handled by a predetermined opposite transmission device that transmits and receives among the plurality of opposite transmission devices , defining each of the data processing method corresponding to the data of the predetermined type in which the plurality of pairs direction transmission device handles each of a plurality of processing schemes data, select the processing method data corresponding to the predetermined opposing transmission device And
The internal circuit of its own transmission apparatus, including the wiring connection between the transceiver unit corresponding to the predetermined opposing transmission apparatus formed to correspond to only the data processing method corresponding to the selected said processing system data,
And external own transmission device, passes to convert the data based on the data processing method with a predetermined opposing transmission device,
A data transmission method characterized by the above. A switching instruction including an instruction for designating the predetermined counter transmission apparatus for switching the predetermined counter transmission apparatus for transmitting and receiving data of its own transmission apparatus is received from outside.
Switching the data processing method based on the processing method data corresponding to the predetermined type of data handled by the predetermined opposite transmission device specified by the switching instruction;
The data transmission method according to claim 6. Comprising a plurality of said processing system data corresponding to the data of each of the predetermined type of said plurality of pairs direction transmission device handled in advance,
Selecting the processing method data corresponding to the predetermined type of data handled by the predetermined opposite transmission device to be transmitted and received from the plurality of processing method data provided in advance;
8. The data transmission method according to claim 6, wherein the data transmission method is a data transmission method. An FPGA is provided in advance, and the data processing method is switched by setting the processing method data corresponding to the type of data handled by the predetermined opposite transmission apparatus in the FPGA.
9. The data transmission method according to claim 6, 7 or 8. The processing method data includes processing method data for processing data handled in a synchronous network including SDH and SONET and an asynchronous network including Ethernet.
10. The data transmission method according to claim 6, 7, 8 or 9.

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