WO2015158127A1 - 光发射系统及发射方法、光交换装置及控制方法 - Google Patents
光发射系统及发射方法、光交换装置及控制方法 Download PDFInfo
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- WO2015158127A1 WO2015158127A1 PCT/CN2014/089467 CN2014089467W WO2015158127A1 WO 2015158127 A1 WO2015158127 A1 WO 2015158127A1 CN 2014089467 W CN2014089467 W CN 2014089467W WO 2015158127 A1 WO2015158127 A1 WO 2015158127A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0066—Provisions for optical burst or packet networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
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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
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0005—Switch and router aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0005—Switch and router aspects
- H04Q2011/0037—Operation
- H04Q2011/0039—Electrical control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0005—Switch and router aspects
- H04Q2011/0037—Operation
- H04Q2011/005—Arbitration and scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0005—Switch and router aspects
- H04Q2011/0052—Interconnection of switches
- H04Q2011/0058—Crossbar; Matrix
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0077—Labelling aspects, e.g. multiprotocol label switching [MPLS], G-MPLS, MPAS
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a light emitting system, a transmitting method, an optical switching device, and a control method.
- the optical switching system uses a burst mode transmission mechanism to transmit optical signals, that is, there is a gap between data packets carried in the optical signal, so a burst signal is generated, and the burst signal is as shown in FIG. 1A. Since the amplitudes of the burst signals are relatively large, the light receiving system needs to adjust the gain ratio and other parameters according to the power peak of each optical signal when the optical signal is received, so that the optical signals of different intensities are converted into electrical signals of the same intensity. In turn, the optical receiving system can successfully receive the optical signal.
- the conventional practice of the industry optical receiving system to process burst signals is to add a Preamble in front of the data packet carried in each optical signal for adjusting the state of the optical receiver, as shown in FIG. 1B, but this adjustment
- the process usually requires hundreds of ns or a few us, and as the difference in power value between data optical signals increases and the data transmission rate increases, the adjustment process will increase, and the Preamble that needs to be added will also increase. Waste of resources.
- the Ethernet data frame length is 64B-1510B. Taking 10G Ethernet as an example, the shortest packet length is 50ns. If you add a few ns of preamble, it will cause nearly 50% of the bandwidth waste.
- the embodiments of the present invention provide a light emitting system, a transmitting method, a switching device, and a control method, which are used to solve the waste of resources in the prior art.
- a light emitting system comprising at least two data transmitting devices, wherein:
- any one of the optical tags carried in the optical tag signal corresponds to one of the data signals, and an output port of the switched transmission path corresponding to the data signal sent by any two different data transmitting devices is Not the same.
- any one of the data sending apparatuses includes an optical label sending module, a data packet sending module, and an idle sequence sending module, where:
- the optical label sending module is configured to send an optical label
- the data packet sending module is configured to send a data packet
- the idle sequence sending module is configured to send an idle sequence between any two adjacent optical tags and data packets.
- the optical label sending module is further configured to:
- An optical label is generated, where any one of the optical labels includes a preset switching destination output port address, a data length, and an optical label identifier.
- a light emitting system comprising at least one optical packet transmitting device and at least one optical tag transmitting device, wherein:
- Any optical packet transmitting apparatus for transmitting a continuous data signal composed of idle information and data packets
- Any optical tag transmitting device configured to transmit an optical tag signal, and send the optical tag signal to the optical switching device, so that the optical switching device constructs, according to the optical tag signal, a transmission corresponding to the optical packet transmitting device
- the output ports of the switched transmission paths corresponding to the data signals sent by any two different optical packet transmitting devices are different.
- any one of the optical packet sending apparatus includes a data packet sending module and an idle sequence sending module, where:
- the data packet sending module is configured to send a data packet
- the idle sequence sending module is configured to send an idle sequence between any two adjacent data packets.
- the optical label sending apparatus is further configured to:
- An optical label is generated, where any one of the optical labels includes a preset switching destination output port address, a data length, and an optical label identifier.
- an optical switching device including a management control module and an optical switch matrix, where:
- a management control module configured to receive an optical tag signal emitted by the optical transmitting system, and send a control signal generated according to the optical tag signal to the optical switch matrix;
- An optical switch matrix for receiving a continuous data signal transmitted by the optical transmitting system, the control signal, and adjusting an input port of each input data signal and a link of an output port of the corresponding output data signal according to the control signal
- An optical switch unit configured to transmit an exchange transmission path for transmitting a continuous data signal, and input the arbitrary data signal to the optical receiving system through the exchange transmission path;
- the input port and output port of any two different switched transmission paths are different.
- each optical label carried by the optical label signal received by the management control module includes a preset switching destination output port address, a data length, and an optical label identifier.
- the management control module is specifically configured to:
- the generated control signal is sent to the optical switch matrix.
- the management control module is further configured to:
- the optical switch matrix is specifically configured to:
- control signals corresponding to any one of the data signals perform the following operations:
- the arbitrary one of the data signals is input to the light receiving system through the exchange transmission path.
- the management control module is specifically configured to:
- Determining whether the data packet meets a preset condition and if yes, using the default switching destination output port address included in the optical label corresponding to the data packet as an actual switching destination output port address, and generating the port address according to the actual switching destination output port address Control signal; otherwise, determine an idle switch output port and use any one of the free switch output ports as an actual switch
- the destination outputs the port address, and generates a control signal according to the actual switching destination output port address.
- a seventh possible implementation manner when the management control module determines whether the any one of the data packets meets the preset condition, specifically:
- the management control module is specifically configured to:
- any one of the determined exchange output ports of the idle exchange output port is used as the actual exchange destination output port address of the idle sequence, and a control signal is generated according to the actual exchange destination output port address.
- the management control module is specifically configured to:
- the preset switching destination output corresponding to one of the data packets is output.
- the port address is used as the first actual switching destination output port address of the one data packet, and the determined idle switching output port address is used as the second actual switching destination output port address of the another data packet;
- the management control module is further configured to:
- the method further includes a power balancing unit, configured to: before the data packet is input to the optical receiving system through the corresponding actual switching destination output port. Perform power compensation.
- a light receiving system comprising an optical receiver, a processor, wherein:
- Each optical receiver is configured to receive a continuous data signal transmitted by the light emitting system
- a processor configured to process a data packet in the received continuous data signal.
- an optical switching system including:
- the light emitting system according to the first aspect, the second aspect, the optical switching device according to the third aspect, and the light receiving system according to the fourth aspect are provided.
- a method for emitting light by a light emitting system comprising:
- any one of the optical tags carried in the optical tag signal corresponds to one of the data signals, and an output port of the switched transmission path corresponding to the data signal sent by any two different data transmitting devices is Not the same.
- an idle sequence is between any optical tag and the adjacent data packet
- optical tag signal and the continuous data signal are transmitted by out-of-band transmission, there is an idle sequence between any two adjacent data packets.
- the method further includes:
- An optical label is generated, where any one of the optical labels includes a preset switching destination output port address, a data length, and an optical label identifier.
- a control method including:
- the input port and output port of any two different switched transmission paths are different.
- each optical label carried by the optical label signal includes a preset switching destination output port address, a data length, and an optical label identifier.
- the generating the control signal according to the optical label signal specifically includes:
- a switch for controlling a link corresponding to an output port corresponding to the input port address and an output port corresponding to the actual switching destination output port address is generated.
- the unit's control signal it also includes:
- control signals corresponding to any one of the data signals perform the following operations:
- the generating the control signal according to the optical label signal specifically includes:
- Determining whether the data packet meets a preset condition and if yes, using the default switching destination output port address included in the optical label corresponding to the data packet as an actual switching destination output port address, and generating the port address according to the actual switching destination output port address
- the control signal otherwise, the idle switch output port is determined, and any one of the free switch output ports is used as the actual switch destination output port address, and a control signal is generated according to the actual switch destination output port address.
- determining whether the data packet meets a preset condition includes:
- the generating the control signal according to the optical label signal specifically includes:
- any one of the determined exchange output ports of the idle exchange output port is used as the actual exchange destination output port address of the idle sequence, and a control signal is generated according to the actual exchange destination output port address.
- the generating the control signal according to the optical label signal specifically includes:
- the default switching destination output port address corresponding to one of the data packets is used as the first actual switching destination output port address of the one data packet, and the determined The idle exchange output port address is used as the second actual exchange destination output port address of the other data packet;
- the input port and the corresponding output of each input data signal are adjusted according to the control signal
- the optical switch on the link of the output port of the data signal, after constructing the switched transmission path for transmitting the continuous data signal, before the input of the arbitrary data signal to the optical receiving system through the switched transmission path further includes:
- the optical signal transmitted by the optical transmitting system is a burst data signal.
- the conventional method for the optical receiving system to process the burst signal is to add a Preamble in front of the data packet carried in each optical signal.
- the optical transmission system provided in the embodiment of the present invention includes at least one data transmitting device, wherein: any one of the data transmitting devices is configured to emit the optical tag And a continuous data signal consisting of an idle sequence and a data packet, and transmitting the transmitted optical tag signal to the optical switching device, so that the optical switching device constructs an exchange of the continuous data signal transmitted by any one of the data transmitting devices according to the optical tag signal a transmission path, wherein any one of the optical tags carried in the optical tag signal corresponds to one of the data signals, and the corresponding transmission path of the data signal sent by any two different data transmitting devices
- the output ports of the paths are different. This not only ensures that the data transmitting device transmits continuous
- 1A is a schematic diagram of a burst signal in the prior art
- 1B is a schematic diagram of a processed burst signal in the prior art
- FIG. 2A is a schematic diagram of a light emitting system according to an embodiment of the present invention.
- 2B is a schematic diagram of in-band transmission of a data signal and an optical tag signal according to an embodiment of the present invention
- 2C is a schematic diagram showing the functional structure of a data transmitting apparatus according to an embodiment of the present invention.
- 2D is a schematic diagram of an optical label in an embodiment of the present invention.
- 2E is a schematic diagram of transmitting a continuous data signal according to an embodiment of the present invention.
- 3A is a schematic diagram of out-of-band transmission of a data signal and an optical tag signal according to an embodiment of the present invention
- 3B is a schematic diagram of another light emitting system according to an embodiment of the present invention.
- 3C is a schematic diagram of a data packet sent by an optical packet sending apparatus according to an embodiment of the present invention.
- FIG. 4A is a schematic diagram of an optical switching device according to an embodiment of the present invention.
- 4B is a schematic diagram of a process of generating a control signal in an embodiment of the present invention.
- FIG. 4C is another schematic diagram of an optical switching device according to an embodiment of the present invention.
- 4D is a schematic diagram of a generated signal of a management control module according to an embodiment of the present invention.
- FIG. 5 is a schematic diagram of a light receiving system according to an embodiment of the present invention.
- FIG. 6 is a schematic diagram of an optical switching system according to an embodiment of the present invention.
- FIG. 7 is a flow chart of light emitted by a light emitting system according to an embodiment of the present invention.
- Figure 8 is another flow chart of light emission by a light emitting system in accordance with an embodiment of the present invention.
- the optical transmitting system includes at least one data transmitting device, wherein any one of the data transmitting devices is configured to transmit an optical tag signal and is composed of an idle sequence and a data packet.
- optical tag signal carries Any one of the optical tags corresponds to one of the data signals, and the output ports of the switched transmission paths corresponding to the data signals transmitted by any two different data transmitting devices are different, so that not only the data transmitting device transmits but also It is a continuous data signal, and it also ensures that each optical receiving system can receive continuous data signals, so that there is no need to add a Preamble in front of the data packets carried in the processed data signal, thereby avoiding waste of resources.
- an embodiment of the present invention provides a light emitting system 200, which includes at least one data transmitting device 1, wherein:
- any one of the optical tags carried in the optical tag signal and one of the data signals corresponds to the output ports of the switched transmission paths corresponding to the data signals transmitted by any two different data transmitting apparatuses 1 are different.
- the optical tag signal and the data signal are sent in multiple manners.
- the in-band transmission mechanism may be used for sending (that is, the optical tag signal and the data signal may be sent in the same channel), as shown in FIG. 2B.
- the transmission mode in order to ensure the continuity of the data signal, an idle sequence is filled between the optical tag and the data packet, and the second embodiment adopts the transmission mode.
- each optical label corresponds to one data, such as the optical label 1 in FIG. 2B corresponding to the data packet 1, the optical label 2 corresponding to the data packet 2, and the optical label 3 corresponding to the data packet 3. Whether it is the in-band transmission mechanism or the out-of-band transmission mechanism is the same.
- the management control module 21 since the optical tag signal is used for the optical switching device 2 to construct an exchange transmission path for transmitting the continuous data signal transmitted by any one of the data transmitting devices 1, that is, the management control module 21 receives the optical tag from The generation of the control signal drives the optical switch matrix 22 to complete the construction of the switched transmission path, and there is a certain delay. Therefore, optionally, each optical label is sent in advance of the corresponding data packet, so that the data packet arrives at the optical switch matrix. Prior to 22, the management control module 21 has generated a control signal based on the corresponding optical tag, and then the optical switch matrix 22 constructs an exchange transmission path for transmitting the data signal based on the control signal.
- the optical label may also be transmitted simultaneously with the corresponding data packet, or the corresponding data packet may be sent earlier than the optical label.
- the data packet is delayedly controlled, and the management control is performed.
- the module 21 generates a control signal based on the optical tag and constructs a transmission path, and then transmits the data packet.
- any data transmitting apparatus 1 includes an optical label sending module 11, a data packet sending module 12, and an idle sequence sending module 13, wherein:
- the optical label sending module 11 is configured to send an optical label.
- a data packet sending module 12 configured to send a data packet
- the idle sequence sending module 13 is configured to send an idle sequence between any two adjacent optical tags and data packets.
- the optical label sending module 11 is further configured to:
- optical label is generated, where any optical label includes a preset switching destination output port address, a data length, and an optical label identifier. That is, the optical label is in the form shown in FIG. 2D.
- the preset switching destination output port address in the optical label is used to construct the switched transmission path; the data length is used to calculate the duration of the control signal (ie, the effective time), and the data signal transmission and exchange is completed; the optical label identifier is used for The start of the optical tag signal is identified in the management control module 21 using the optical tag identifier.
- FIG. 2E is a schematic diagram showing the data transmitting apparatus 1 in the in-band transmission mode.
- the figure illustrates the transmission process of the data transmitting apparatus 1 by taking the layer 2 switching of the Ethernet optical packet as an example.
- the data frame is stored in the Ethernet optical packet storage module before being sent.
- the destination MAC address Medium Access Control
- the destination MAC address is used to determine the preset exchange.
- the destination port address is output, and the length of the data frame is read from the data frame.
- the length of the data frame is used to determine the length of the data, and then the optical label is generated according to the output port address, the data length, and the optical label identifier of the preset switching destination. .
- the management control module 21 can obtain the preset switching destination output port address corresponding to the destination port number by looking up the table, as shown in Table 1: the destination MAC address and the preset switching destination output. Correspondence of port addresses, where each preset switching destination output port address corresponds to multiple MAC addresses.
- the optical transmitting system of the first embodiment includes a data transmitting device 1 that transmits both an optical tag signal and a data signal.
- the optical tag signal and the transmitted data signal may not be the same device, or a band may be used.
- the external transmission mechanism transmits (ie, the optical tag signal and the data signal can also be transmitted in different channels), as shown in FIG. 3A, when the optical tag signal is transmitted using the out-of-band transmission mechanism, there is no channel on the transmission data signal.
- the idle sequence is sent. On the transmission link of the optical tag signal, the idle sequence may be sent between the optical tag signals, or the idle sequence may not be sent, as shown in the second embodiment:
- an embodiment of the present invention provides a light emitting system 200, which includes at least one optical packet transmitting device 1 / and at least one optical tag transmitting device 2 / , wherein:
- any one of the optical packet transmitting apparatuses 1 / is configured to transmit a continuous data signal composed of idle information and data packets;
- any one of the optical tags carried in the optical tag signal corresponds to one of the corresponding data signals, and the output ports of the switched transmission paths corresponding to any two different optical packet transmitting apparatuses 1 / transmitted data signals are not the same.
- any of an optical packet transmission apparatus 1 / data packet comprises a transmitting module 11 / idle sequence sending module 12 /, wherein:
- the idle sequence sending module 12 / is configured to send an idle sequence between any two adjacent data packets.
- an optical transmission apparatus 2 tag further configured to:
- An optical label is generated, where any one of the optical labels includes a preset switching destination output port address, a data length, and an optical label identifier.
- an optical switching device 2 is also provided, including management.
- the management control module 21 is configured to receive the optical tag signal transmitted by the optical transmitting system 200, and send a control signal generated according to the optical tag signal to the optical switch matrix 22;
- the optical switch matrix 22 is configured to receive the continuous data signal and the control signal transmitted by the light emitting system 200, and adjust the optical switch on the link of the input port of each input data signal and the output port of the corresponding output data signal according to the control signal.
- Unit a constructing an exchange transmission path for transmitting continuous data signals, and inputting any one of the data signals to the light receiving system 500 through the exchange transmission path;
- the input port and output port of any two different switched transmission paths are different.
- the management control module 21 determines the location of the optical tag by using the optical tag identifier, and then extracts the preset switching destination output port address from the optical tag to generate the actual switching destination output port address, and extracts the data length. The information is used to generate the duration of the control signal.
- the process of generating the control signal by the optical switching device 2 is as shown in FIG. 4B.
- each optical label carried by the optical label signal received by the management control module 21 includes a preset switching destination output port address, a data length, and an optical label identifier.
- the management control module 21 is specifically configured to:
- the generated control signals are sent to the optical switch matrix 22.
- management control module 21 is further configured to:
- the effective time of the control signal for controlling the exchange transmission path of the data packet corresponding to the optical tag is determined according to the time.
- the process of generating the output port address of the actual switching destination is as follows:
- step b it is first determined whether an error is generated in the optical tag. If an error occurs, the unoccupied output port is used as the actual switching destination output port of the data packet corresponding to the optical tag. If no error occurs, step b is performed. .
- Step b determining the state of the path_state of the output port m of the preset switching destination. If path_state is 1, perform step c, otherwise, perform step d;
- Step c path_state is 1, indicating that the default switching destination output port m is occupied, and port_num_1 is set to 0;
- Step d path_state is 0, indicating that the output port m of the preset switching destination is not occupied. At this time, the path_state of the output destination port m of the preset switching destination is set to 1;
- the actual switching destination output port address of the data signal corresponding to the preset switching destination output port address is the preset switching destination output port address, connecting the input port and the actual switching destination output port, thereby constructing an exchange transmission path, That is, the corresponding data signal is input to the light receiving system 500 through the preset switching destination output port.
- Step e starting from the start of constructing the exchange transmission path, the counter build_time starts counting.
- the value of the counter build_time is equal to the duration of the control signal, it indicates that the valid time of the exchange transmission path ends, and the path_state of the port_num_1 and the output port m are both set to 0. Release the link.
- the uploading process determine the actual switching destination output port address corresponding to each data signal. After determining the actual switching destination output port address corresponding to each data signal, the corresponding control signal can be generated by looking up the table.
- Table 2 uses 4x4banyan structured optical switch.
- the control signal of the matrix 22 gives an example of the correspondence between the control signal and the actual switching destination output port address. In practical applications, the actual switching destination output port address may not be stored.
- the optical switch matrix 22 is specifically configured to:
- control signals corresponding to any one of the data signals perform the following operations:
- Any one of the data signals is input to the light receiving system 500 through the exchange transmission path.
- the management control module 21 is specifically configured to:
- the management control module 21 determines whether any one of the data packets meets the preset condition, specifically:
- the management control module 21 is specifically configured to:
- any one of the determined exchange output ports of the idle exchange output port is used as the actual exchange destination output port address of the idle sequence, and the control port is generated according to the actual exchange destination output port address.
- the output port of the preset switching destination corresponding to the data signal may be occupied.
- the management control module 21 is specifically configured to:
- the preset switching destination output port corresponding to one of the data packets is used.
- the address is the first actual switching destination output port address of the data packet, and the determined idle switching output port address is used as the second actual switching destination output port address of the other data packet;
- the switching destination output ports 1, 2, and 3 are occupied, and the switching destination output port 4 is idle. If the output destination port of the preset switching destination generated by the fourth data signal is 3, the switching destination output port 3 is already occupied. At this time, the fourth data signal is not discarded, but will be Switching to the switching destination output port 4, that is, the fourth data signal is input to the optical receiving system 500 through the switching destination output port 4 through the corresponding actual switching destination output port 4, and the management control module 21 will be based on "1230". To check the table to generate the control signal, because the control signal corresponding to "1230" and "1234" The corresponding control signals are the same. Therefore, this ensures the continuity of the data signal transmission of the switching destination output port.
- the transmission powers of different optical transmission systems 200 are different, and the interactive transmission paths of the data signals in the optical switch matrix 22 are different, and the transmission loss is different, then the same
- the power of the data signal from the different data transmitting device 1, or the optical packet transmitting device 1 / received by the switching destination output port is different. Since there is such a difference between the data signals, the light receiving system 500 must use burst mode photoelectric conversion. The device performs data signal reception, and as such, there are also problems in the background art.
- a power balancing unit 23 is further included for inputting a data packet to the optical receiving system through a corresponding actual switching destination output port. Power compensation was performed before.
- the management control module 21 is further configured to:
- the first power attenuation value compensates for the transmission loss present in the switched transmission path.
- the second power attenuation value is primarily compensated for the losses present in the optical switch matrix 22. Since the losses in the optical switch matrix 22 are fixed and related to the interactive transmission path of the data signal transmission. Therefore, the loss value existing in the optical switch matrix 22 can be determined according to the generated control signal, that is, after the actual exchange destination output port address is generated, the second power attenuation value is generated by looking up the table.
- the power value required to be compensated for the data signal transmitted in each transmission path is obtained.
- the appropriate amplifier can be selected for power compensation according to the type of data signal transmitted in the switched transmission path. Reimbursement.
- the amplifier array may be an SOA (Semiconductor Optical Amplifie) or an EDFA (Erbium-doped Fiber Amplifier).
- the power equalization unit 23 can perform power compensation by using a continuous amplifying device, thereby further reducing system complexity and saving cost.
- a light receiving system 500 including an optical receiver 3, and a processor 4, wherein:
- Each optical receiver 3 is configured to receive a continuous data signal transmitted by the light emitting system 200;
- the processor 4 is configured to process the data packet in the received continuous data signal.
- an optical switching system including:
- the embodiment of the present invention further provides a method for emitting light by a light emitting system, and the detailed process of the method is as follows:
- Step 700 transmitting an optical tag signal and a continuous data signal consisting of an idle sequence and a data packet
- Step 710 Send the transmitted optical tag signal to the optical switching device, so that the optical switching device constructs an exchange transmission path for transmitting a continuous data signal transmitted by any one of the data transmitting devices according to the optical tag signal; wherein any optical tag signal carries An optical tag corresponds to one of the data signals, and the output ports of the switched transmission paths corresponding to the data signals transmitted by any two different data transmitting devices are different.
- an idle sequence is between any optical tag and the adjacent data packet
- optical tag signal and the continuous data signal are transmitted by out-of-band transmission, then any two An idle sequence between adjacent packets.
- the method before the optical label signal is transmitted, the method further includes:
- An optical label is generated, where any one of the optical labels includes a preset switching destination output port address, a data length, and an optical label identifier.
- the embodiment of the present invention further provides another method for emitting light by a light emitting system, and the detailed process of the method is as follows:
- Step 800 Receive an optical tag signal and a continuous data signal that are transmitted by the optical transmitting system.
- Step 810 Generate a control signal according to the optical tag signal.
- Step 820 Adjust an optical switch on a link of an input port of each input data signal and an output port of the corresponding output data signal according to the control signal, and construct an exchange transmission path for transmitting the continuous data signal;
- Step 830 Input any one of the data signals to the optical receiving system through the switched transmission path; wherein the input ports and output ports of any two different switched transmission paths are different.
- each optical label carried by the optical label signal includes a preset switching destination output port address, a data length, and an optical label identifier.
- generating a control signal according to the optical label signal specifically includes:
- a control signal of the switch unit of the link where the output port corresponding to the input port address and the output port corresponding to the actual switching destination port address are generated is generated.
- the method further includes:
- the effective time of the control signal for controlling the exchange transmission path of the data packet corresponding to the optical tag is determined according to the time.
- the optical switch on the link of the input port of each input data signal and the output port of the corresponding output data signal is adjusted according to the control signal, and an exchange transmission path for transmitting the continuous data signal is constructed.
- control signals corresponding to any one of the data signals perform the following operations:
- the input unit corresponding to the data signal and the switch unit of the link where the actual switching destination output port is located are connected, and the input port is connected with the actual switching destination output port to construct an exchange transmission path for transmitting any data signal.
- generating a control signal according to the optical label signal specifically includes:
- determining whether the data packet meets the preset condition specifically includes:
- generating a control signal according to the optical label signal specifically includes:
- any one of the determined exchange output ports of the idle exchange output port is used as the actual exchange destination output port address of the idle sequence, and the control port is generated according to the actual exchange destination output port address.
- generating a control signal according to the optical label signal specifically includes:
- the default switching destination output port address is the same and unoccupied, and the default switching destination output port address corresponding to one of the data packets is used as the first actual switching destination output port address of the data packet, and the idle switching output will be determined.
- the port address is the second actual exchange destination output port address of another packet;
- the method further includes:
- the total power attenuation value is calculated according to the first power attenuation value, and/or the second power attenuation value; and the data packet is subjected to power compensation before being input to the light receiving system through the corresponding actual switching destination output port.
- a light emitting system in which the optical transmitting system includes at least one data transmitting device, wherein: any one of the data transmitting devices is configured to transmit an optical tag signal and is idle And a continuous data signal consisting of the sequence and the data packet, and transmitting the transmitted optical tag signal to the optical switching device, so that the optical switching device constructs an exchange transmission path for transmitting the continuous data signal transmitted by any one of the data transmitting devices according to the optical tag signal; Any optical tag carried in the optical tag signal corresponds to one data packet in the data signal, and the output ports of the switched transmission path corresponding to the data signals sent by any two different data transmitting devices are different, so that not only is the guarantee
- the data transmitting device transmits a continuous data signal, and also ensures that each optical receiving system can receive a continuous data signal, so that there is no need to add a Preamble in front of the data packet carried in the processed data signal. Avoid the waste of resources.
- the present invention is directed to a method, apparatus (system), and computer program in accordance with an embodiment of the present invention
- the flow chart and/or block diagram of the product is described. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
- These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus functions in one or more blocks of a flow or a flow diagram and/or block diagram of a flowchart.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions in one or more blocks of the flowchart or in a flow or block of the flowchart.
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Abstract
Description
Claims (32)
- 一种光发射系统,其特征在于,包括至少两个数据发送装置,其中:任意一数据发送装置,用于发射光标签信号及由空闲序列和数据包组成的连续数据信号,并将发射的光标签信号发送至光交换装置,以使得所述光交换装置根据所述光标签信号构建传输所述任意一数据发送装置发射的连续数据信号的交换传输路径;其中,所述光标签信号中携带的任意一光标签与所述数据信号中的一个数据包相对应,所述任意两个不同的数据发送装置发送的数据信号对应的交换传输路径的输出端口均不相同。
- 如权利要求1所述的光发射系统,其特征在于,任意一数据发送装置包括光标签发送模块、数据包发送模块、空闲序列发送模块,其中:所述光标签发送模块,用于发送光标签;所述数据包发送模块,用于发送数据包;所述空闲序列发送模块,用于在任意两个相邻的光标签和数据包之间发送空闲序列。
- 如权利要求1或2所述的光发射系统,其特征在于,所述光标签发送模块还用于:生成光标签,其中,任意一光标签包括预设交换目的输出端口地址、数据长度,及光标签标示符。
- 一种光发射系统,其特征在于,包括至少一个光包发送装置、至少一个光标签发送装置,其中:任意一光包发送装置,用于发射由空闲信息和数据包组成的连续数据信号;任意一光标签发送装置,用于发射光标签信号,并将所述光标签信号发送至光交换装置,以使得所述光交换装置根据所述光标签信号构建传输对应的光包发送装置发射的连续数据信号的交换传输路径;其中,所述光标签信号中携带的任意一光标签与对应的数据信号中的一个数据包相对应,所述任意两个不同的光包发送装置发送的数据信号对应的交换传输路径的输出端口均不相同。
- 如权利要求4所述的光发射系统,其特征在于,任意一光包发送装置包括数据包发送模块、空闲序列发送模块,其中:所述数据包发送模块,用于发送数据包;所述空闲序列发送模块,用于在任意两个相邻的数据包之间发送空闲序列。
- 如权利要求4或5所述的光发射系统,其特征在于,所述光标签发送装置还用于:生成光标签,其中,任意一光标签包括预设交换目的输出端口地址、数据长度,及光标签标示符。
- 一种光交换装置,其特征在于,包括管理控制模块、光开关矩阵,其中:管理控制模块,用于接收光发射系统发射的光标签信号,并将根据所述光标签信号生成的控制信号发送至光开关矩阵;光开关矩阵,用于接收光发射系统发射的连续数据信号、所述控制信号,并根据所述控制信号调整每一输入数据信号的输入端口和对应的输出数据信号的输出端口的链路上的光开关单元,构建传输连续数据信号的交换传输路径,将所述任意一数据信号通过所述交换传输路径输入至光接收系统;其中,任意两个不同的交换传输路径的输入端口、输出端口均不相同。
- 如权利要求7所述的光交换装置,其特征在于,所述管理控制模块接收到的光标签信号携带的每一个光标签包括预设交换目的输出端口地址、数据长度,及光标签标示符。
- 如权利要求7或8所述的光交换装置,其特征在于,所述管理控制模块具体用于:根据对应的光标签包括的预设交换目的输出端口地址确定连续数据信号 携带的每一个数据包对应的实际交换目的输出端口地址;给每一空闲序列分配的空闲输出端口对应的输出端口地址,作为所述每一个空闲序列分别对应的实际交换目的输出端口地址;针对任意一数据包及任意一空闲序列,分别执行如下操作:根据输入端口地址和实际交换目的输出端口地址,生成控制所述输入端口地址对应的输入端口和实际交换目的输出端口地址对应的输出端口所在链路的开关单元的控制信号;将生成的控制信号发送至光开关矩阵。
- 如权利要求9所述的光交换装置,其特征在于,所述管理控制模块还用于:针对接收到的光标签信号中的任意一光标签,根据所述任意一光标签包括的数据包的长度计算传输对应的数据包所需要的时间;根据所述时间确定控制与所述光标签对应的数据包的交换传输路径的控制信号的有效时间。
- 如权利要求7-10任一项所述的光交换装置,其特征在于,所述光开关矩阵具体用于:针对与任意一数据信号对应的控制信号,分别执行如下操作:控制与所述数据信号对应的输入端口、实际交换目的输出端口所在链路的开关单元,将所述输入端口和所述实际交换目的输出端口相连,构建传输所述任意一数据信号的交换传输路径;将所述任意一数据信号通过所述交换传输路径输入至光接收系统。
- 如权利要求7-11任一项所述的光交换装置,其特征在于,所述管理控制模块具体用于:针对任意一光标签对应的数据包,分别执行如下操作:判断所述数据包是否满足预设条件,若是,将所述数据包对应的光标签包括的预设交换目的输出端口地址作为实际交换目的输出端口地址,并根据所述实际交换目的输出端口地址生成控制信号;否则,确定空闲的交换输出 端口,并将所述空闲的交换输出端口中的任意一交换输出端口作为实际交换目的输出端口地址,并根据所述实际交换目的输出端口地址生成控制信号。
- 如权利要求12所述的光交换装置,其特征在于,所述管理控制模块判定所述任意一数据包是否满足预设条件时,具体为:判定所述数据包对应的光标签是否正确,和/或,对应的预设交换目的输出端口地址是否被占用。
- 如权利要求12或13所述的光交换装置,其特征在于,所述管理控制模块具体用于:针对空闲序列,将确定出的空闲的交换输出端口中的任意一交换输出端口作为所述空闲序列的实际交换目的输出端口地址,并根据所述实际交换目的输出端口地址生成控制信号。
- 如权利要求12-14任一项所述的光交换装置,其特征在于,所述管理控制模块具体用于:若任意两个不同的数据包同时到达光开关矩阵,且所述两个数据包分别对应的预设交换目的输出端口地址相同、未被占用,则将其中一个数据包对应的预设交换目的输出端口地址作为所述一个数据包的第一实际交换目的输出端口地址,将确定出的空闲交换输出端口地址作为所述另一个数据包的第二实际交换目的输出端口地址;并根据所述第一实际交换目的输出端口地址、所述第二实际交换目的输出端口地址生成控制信号。
- 如权利要求7-15任一项所述的光交换装置,其特征在于,所述管理控制模块还用于:分别计算连续数据信号中包括的每一个数据包通过对应的交换传输路径后的第一功率衰减值,和/或,所述对应的交换传输路径的光开关单元的第二功率衰减值;根据所述第一功率衰减值,和/或所述第二功率衰减值计算总功率衰减值,并将所述总功率衰减值发送至功率均衡单元,以使得所述功率均衡单元将数 据包在通过对应的实际交换目的输出端口输入至光接收系统之前进行功率补偿。
- 如权利要求16所述的光交换装置,其特征在于,还包括功率均衡单元,用于将数据包在通过对应的实际交换目的输出端口输入至光接收系统之前进行功率补偿。
- 一种光接收系统,其特征在于,包括光接收机,处理器,其中:每一个光接收机,用于接收光发射系统发射的连续数据信号;处理器,用于对所述接收到的连续数据信号中的数据包进行处理。
- 一种光交换系统,其特征在于,包括:如权利要求1-6所述的光发射系统、如权利要求7-17所述的光交换装置,及如权利要求18所述的光接收系统。
- 一种光发射系统发射光的方法,其特征在于,包括:发射光标签信号及由空闲序列和数据包组成的连续数据信号,并将发射的光标签信号发送至光交换装置,以使得所述光交换装置根据所述光标签信号构建传输所述任意一数据发送装置发射的连续数据信号的交换传输路径;其中,所述光标签信号中携带的任意一光标签与所述数据信号中的一个数据包相对应,所述任意两个不同的数据发送装置发送的数据信号对应的交换传输路径的输出端口均不相同。
- 如权利要求20所述的方法,其特征在于,若光标签信号和连续数据信号采用带内传输方式进行发射,则在任意一光标签和相邻的数据包之间为空闲序列;若光标签信号和连续数据信号采用带外传输方式进行发射,则在任意两个相邻的数据包之间为空闲序列。
- 如权利要求20或21所述的方法,其特征在于,在发射光标签信号之前,还包括:生成光标签,其中,任意一光标签包括预设交换目的输出端口地址、数据长度,及光标签标示符。
- 一种控制方法,其特征在于,包括:接收光发射系统发射的光标签信号、连续数据信号;根据所述光标签信号生成控制信号;并根据所述控制信号调整每一输入数据信号的输入端口和对应的输出数据信号的输出端口的链路上的光开关,构建传输连续数据信号的交换传输路径;将所述任意一数据信号通过所述交换传输路径输入至光接收系统;其中,任意两个不同的交换传输路径的输入端口、输出端口均不相同。
- 如权利要求23所述的方法,其特征在于,所述光标签信号携带的每一个光标签包括预设交换目的输出端口地址、数据长度,及光标签标示符。
- 如权利要求23或24所述的方法,其特征在于,根据所述光标签信号生成控制信号,具体包括:根据对应的光标签包括的预设交换目的输出端口地址确定连续数据信号携带的每一个数据包对应的实际交换目的输出端口地址;给每一空闲序列分配的空闲输出端口对应的输出端口地址,作为所述每一个空闲序列分别对应的实际交换目的输出端口地址;针对任意一数据包及任意一空闲序列,分别执行如下操作:根据输入端口地址和实际交换目的输出端口地址,生成控制所述输入端口地址对应的输入端口和实际交换目的输出端口地址对应的输出端口所在链路的开关单元的控制信号。
- 如权利要求25所述的方法,其特征在于,生成控制所述输入端口地址对应的输入端口和实际交换目的输出端口地址对应的输出端口所在链路的开关单元的控制信号之后,还包括:针对接收到的光标签信号中的任意一光标签,根据所述任意一光标签包括的数据包的长度计算传输对应的数据包所需要的时间;根据所述时间确定控制与所述光标签对应的数据包的交换传输路径的控制信号的有效时间。
- 如权利要求23-26任一项所述的方法,其特征在于,根据所述控制信号调整每一输入数据信号的输入端口和对应的输出数据信号的输出端口的链路上的光开关,构建传输连续数据信号的交换传输路径,具体包括:针对与任意一数据信号对应的控制信号,分别执行如下操作:控制与所述数据信号对应的输入端口、实际交换目的输出端口所在链路的开关单元,将所述输入端口和所述实际交换目的输出端口相连,构建传输所述任意一数据信号的交换传输路径。
- 如权利要求23-27任一项所述的方法,其特征在于,根据所述光标签信号生成控制信号,具体包括:针对任意一光标签对应的数据包,分别执行如下操作:判断所述数据包是否满足预设条件,若是,将所述数据包对应的光标签包括的预设交换目的输出端口地址作为实际交换目的输出端口地址,并根据所述实际交换目的输出端口地址生成控制信号;否则,确定空闲的交换输出端口,并将所述空闲的交换输出端口中的任意一交换输出端口作为实际交换目的输出端口地址,并根据所述实际交换目的输出端口地址生成控制信号。
- 如权利要求28所述的方法,其特征在于,判断所述数据包是否满足预设条件,具体包括:判定所述数据包对应的光标签是否正确,和/或,对应的预设交换目的输出端口地址是否被占用。
- 如权利要求23-29任一项所述的方法,其特征在于,根据所述光标签信号生成控制信号,具体包括:针对空闲序列,将确定出的空闲的交换输出端口中的任意一交换输出端口作为所述空闲序列的实际交换目的输出端口地址,并根据所述实际交换目的输出端口地址生成控制信号。
- 如权利要求23-30任一项所述的方法,其特征在于,根据所述光标签信号生成控制信号,具体包括:若任意两个不同的数据包同时到达光开关矩阵,且所述两个数据包分别 对应的预设交换目的输出端口地址相同、未被占用,则将其中一个数据包对应的预设交换目的输出端口地址作为所述一个数据包的第一实际交换目的输出端口地址,将确定出的空闲交换输出端口地址作为所述另一个数据包的第二实际交换目的输出端口地址;并根据所述第一实际交换目的输出端口地址、所述第二实际交换目的输出端口地址生成控制信号。
- 如权利要求23-31任一项所述的方法,其特征在于,在根据所述控制信号调整每一输入数据信号的输入端口和对应的输出数据信号的输出端口的链路上的光开关,构建传输连续数据信号的交换传输路径之后,将所述任意一数据信号通过所述交换传输路径输入至光接收系统之前,还包括:分别计算连续数据信号中包括的每一个数据包通过对应的交换传输路径后的第一功率衰减值,和/或,所述对应的交换传输路径的光开关单元的第二功率衰减值;根据所述第一功率衰减值,和/或所述第二功率衰减值计算总功率衰减值;并,将数据包在通过对应的实际交换目的输出端口输入至光接收系统之前进行功率补偿。
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BR112016024046A2 (pt) | 2017-10-10 |
EP3133786B1 (en) | 2018-09-26 |
KR101909547B1 (ko) | 2018-10-18 |
CN105099565A (zh) | 2015-11-25 |
US10009672B2 (en) | 2018-06-26 |
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