WO2014194599A1 - 抑制PCIe走光纤通信输出噪声的方法、装置及通信节点 - Google Patents
抑制PCIe走光纤通信输出噪声的方法、装置及通信节点 Download PDFInfo
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- WO2014194599A1 WO2014194599A1 PCT/CN2013/085076 CN2013085076W WO2014194599A1 WO 2014194599 A1 WO2014194599 A1 WO 2014194599A1 CN 2013085076 W CN2013085076 W CN 2013085076W WO 2014194599 A1 WO2014194599 A1 WO 2014194599A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0799—Monitoring line transmitter or line receiver equipment
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4204—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus
- G06F13/4221—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus being an input/output bus, e.g. ISA bus, EISA bus, PCI bus, SCSI bus
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
- H04B10/801—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water using optical interconnects, e.g. light coupled isolators, circuit board interconnections
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0024—Peripheral component interconnect [PCI]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2210/00—Indexing scheme relating to optical transmission systems
- H04B2210/07—Monitoring an optical transmission system using a supervisory signal
Definitions
- the present invention relates to the field of optical fiber communication technologies, and in particular, to a method, a device, and a communication node for suppressing high-speed peripheral device interconnection (PCIe) from optical fiber communication output noise.
- PCIe peripheral device interconnection
- the PCIe bus is a high-performance system bus for use on computers and communication platforms.
- the communication states of the two communicating parties based on the PCIe bus are defined. Since the transmitting end and the receiving end of the two communicating parties are connected by a cable, the differential mode voltage of the transmitting end is substantially the same as the differential mode voltage of the receiving end. If the differential mode voltage of the receiving end is below 65mV (millivolts), the receiving end confirms that the transmitting end is in an electrical idle state. If the differential mode voltage of the receiving end is between 65mV and 175mV, the receiving end confirms that the transmitting end sends a noise signal. If the differential mode voltage at the receiving end is above 175 mV, the receiving end confirms that the normal signal is received and decodes the signal.
- the optical fiber can be used to connect the transmitting end and the receiving end in the prior art. Since the transmitting end outputs an electrical signal, it is necessary to separately set the light at the transmitting end and the receiving end.
- the module, the optical module at the transmitting end converts the electrical signal into an optical signal, and after the optical signal is transmitted to the receiving end, the optical module of the receiving end converts the optical signal into an electrical signal.
- the differential mode voltage of the transmitting end is less than 65mV
- the differential mode voltage received by the receiving end may be greater than 175mV due to the light-emitting characteristics of the optical module, so that the transmitting end is in an electrical idle state, or output. In the case of noise, the fiber communication is abnormal.
- the embodiment of the invention provides a method, a device and a communication node for suppressing PCIe output optical fiber communication output noise, so as to solve the problem in the prior art that the transmitting end is in an electrical idle state or output noise.
- the differential mode voltage at the end is greater than 175mV, which causes an abnormality in optical fiber communication.
- a method for suppressing PCIe outgoing fiber communication output noise comprising: detecting a differential mode voltage at a transmitting end of an interface module;
- the optical module connected to the interface module is controlled to be turned off.
- the controlling the closing of the optical module connected to the interface module includes:
- the laser of the optical module is controlled to be turned off by transmitting a shutdown command to the inter-integrated circuit I2C interface of the optical module.
- controlling the closing of the optical module connected to the interface module includes:
- the detection result that the differential mode voltage is lower than the threshold value is sent to the central processing unit CPU through an interrupt mode to control the laser of the optical module to be turned off by the CPU.
- the method further includes When the differential mode voltage is higher than the threshold, the optical module connected to the interface module is controlled to be turned on.
- the interface module is an interface chip that interconnects PCIe based on high-speed peripheral devices.
- a second aspect provides a device for suppressing output noise of a PCIe optical fiber communication, the device comprising: a detecting unit, configured to detect a differential mode voltage at a transmitting end of the interface module;
- control unit configured to: when the differential mode voltage detected by the detecting unit is lower than a threshold, control an optical module connected to the interface module to be turned off.
- control unit includes at least one of the following units:
- a first control subunit configured to control a laser of the optical module to be turned off by enabling a control terminal TX_DISABLE of the optical module
- the second control subunit is configured to control the laser of the optical module to be turned off by sending a shutdown command to the I2C interface of the optical module.
- the control unit is configured to send, by using an interrupt mode, a detection result of the differential mode voltage to a threshold value to a central processing unit CPU And controlling the laser of the optical module to be turned off by the CPU.
- the control unit And when the differential mode voltage detected by the detecting unit is higher than the threshold, the optical module connected to the interface module is controlled to be turned on.
- a communication node in a third aspect, includes: a PCIe interface chip and a detection and control circuit connected to a transmitting end of the PCIe interface chip, where
- the detecting circuit is configured to detect a differential mode voltage of a transmitting end of the PCIe interface chip, and when the differential mode voltage is lower than a threshold, control an optical module connected to the PCIe interface chip to be turned off.
- the detecting and controlling circuit is specifically configured to control a laser of the optical module to be turned off by using a control terminal TX_DISABLE of the optical module, or Sending a shutdown command to the I2C interface of the optical module to control the laser of the optical module to be turned off.
- the communications node further includes a CPU
- the detecting and controlling circuit is specifically configured to send the detection result that the differential mode voltage is lower than a threshold value to the CPU by using an interrupt mode;
- the CPU is configured to control a laser of the optical module to be turned off.
- the prosecution circuit is integrated on the PCIe interface chip.
- an embodiment of the present invention provides an optical module, where the optical module is applied to a communication system according to a Peripheral Component Interconnect Express (PCIe), and the optical module includes a prosecution.
- PCIe Peripheral Component Interconnect Express
- the detecting circuit is configured to detect a differential mode voltage of the first electrical signal sent by the first PCIe device through the first channel, and if the differential mode voltage of the first electrical signal is lower than the first threshold, Electro-optical conversion mode
- the block sends a first control signal, where the first control signal is used to indicate that the first channel is in an Electrical Idle (EI) state;
- the electro-optical conversion module is configured to send, according to the first control signal, a first optical signal to the second optical module, where the first optical signal is used to notify the second optical module to suppress the passage through the first channel
- the differential mode voltage of the electrical signal sent by the second PCIe device is configured to send, according to the first control signal, a first optical signal to the second optical module, where the first optical signal is used to notify the second optical module to suppress the passage through the first channel.
- the optical module further includes:
- a photoelectric conversion module configured to receive a second optical signal sent by the second optical module through the second channel, and convert the received second optical signal into an electrical signal
- a detecting module configured to detect, according to the electrical signal converted by the second optical signal, whether the second optical signal is an optical signal indicating that the second channel is in an EI state;
- An electrical signal driving module configured to: when the detecting module determines that the second optical signal is an optical signal indicating that the second channel is in an EI state, suppressing a differential mode voltage of an electrical signal sent to the first PCIe device And transmitting, by the second channel, the suppressed electrical signal to the first PCIe device, where the differential mode voltage of the suppressed electrical signal is lower than a second threshold.
- a detecting circuit configured to detect a differential mode voltage of the first electrical signal
- a control circuit configured to generate, according to a preset waveform of a control signal indicating that the communication channel is in an electrical idle EI state, when a differential mode voltage of the first electrical signal is lower than the first threshold a control signal and transmitting the first control signal to the electro-optical conversion module.
- the detecting module is specifically configured to: when a waveform of an electrical signal converted according to the second optical signal is When the preset waveforms of the control signals indicating that the communication channel is in the electrical idle EI state are the same, the second optical signal is determined to be an optical signal indicating that the second channel is in the EI state.
- the detecting circuit is further configured to: when the first electrical signal is used When the differential mode voltage is not lower than the first threshold, the second control signal is sent to the electro-optical conversion module according to the first electrical signal, and the second control signal is generated according to the first electrical signal, The first electrical signal carries data sent by the first PCIe device;
- the photoelectric conversion module is further configured to send a third optical signal to the second optical module according to the second control signal, to transmit the data to the second PCIe device.
- an embodiment of the present invention provides another optical module, where the optical module is applied according to a fast In the communication system of the fiber optic communication, the optical module includes a procedural control circuit and an electro-optical conversion module, wherein:
- the detecting circuit is configured to detect a differential mode voltage of the first electrical signal sent by the first PCIe device through the first channel, and if the differential mode voltage of the first electrical signal is lower than the first threshold, The electro-optical conversion module sends a control signal;
- the electro-optical conversion module is configured to prohibit sending an optical signal through the first channel according to the control signal.
- the optical module further includes: a detecting module, configured to detect an optical power of the optical signal of the second channel;
- An electrical signal amplifying circuit configured to: when the detecting module determines that the optical power of the optical signal of the second channel is lower than a threshold, suppress a differential mode of the electrical signal sent to the first PCIe device by using the second channel And transmitting, by the second channel, the suppressed electrical signal to the first PCIe device, where the differential mode voltage of the suppressed electrical signal is lower than a second threshold.
- an embodiment of the present invention provides a communications node, where the communications node includes a Peripheral Component Interconnect Express (PCIe) chip and the PCIe chip.
- PCIe Peripheral Component Interconnect Express
- a prosecution circuit for connecting the transmitting end of the PCIe chip wherein:
- the PCIe chip is configured to send an electrical signal through a transmitter of the first channel
- the detecting circuit is configured to detect a differential mode voltage of the electrical signal, and if the differential mode voltage of the electrical signal is lower than the first threshold, prohibiting the optical module connected to the PCIe chip from passing through the first The channel sends an optical signal.
- the detecting and controlling circuit is specifically configured to disable the laser of the first channel of the optical module from transmitting light by enabling the transmission prohibition TX-DISABLE of the optical module. signal.
- the communications node further includes a central processing unit CPU;
- the detection and control circuit is specifically configured to send the detection result that the differential mode voltage is lower than the first threshold value to the CPU by using an interrupt mode;
- the CPU is configured to control the laser of the first channel of the optical module to be turned off to prohibit the laser of the first channel of the optical module from transmitting an optical signal.
- an embodiment of the present invention provides a communication system, including a first fast peripheral component interconnection.
- the second optical module is connected to the second optical module by using a fiber optic cable, wherein the first optical module is connected to the second optical module by using a fiber optic device, a second PCIe device, a second optical module, and a second optical module.
- the first PCIe device is configured to send, by using the first channel, the first electrical signal to the first optical module that is connected to the first PCIe device;
- the first optical module is configured to detect a differential mode voltage of the first electrical signal, and if the differential mode voltage of the first electrical signal is lower than a first threshold, generate a first control signal, and generate according to the The first control signal is sent to the second optical module, where the first control signal is used to indicate that the first channel is in an Electrical Idle (EI) state;
- EI Electrical Idle
- the second optical module is configured to receive the first optical signal, convert the received first optical signal into a second electrical signal, and determine, according to the second electrical signal, that the first optical signal is a representation
- the first channel is in an EI state optical signal, suppressing a differential mode voltage of a third electrical signal sent to the second PCIe device by the first channel, and passing the first channel to the second channel
- the PCIe device sends the suppressed third electrical signal, and the differential mode voltage of the suppressed third electrical signal is lower than the second threshold.
- the first optical module includes: a detection control circuit, configured to detect a differential mode voltage of the first electrical signal, if a differential mode of the first electrical signal The voltage is lower than the first threshold, and the first control signal is generated according to a preset waveform for indicating that the communication channel is in the EI state;
- An electro-optical conversion module configured to send the first optical signal to the second optical module according to the first control signal.
- the second optical module includes:
- a photoelectric conversion module configured to receive the first optical signal, and convert the received first optical signal into the second electrical signal
- a detecting module configured to determine the second optical signal when a waveform of the electrical signal converted according to the second optical signal is the same as a waveform of the preset control signal indicating that the communication channel is in an electrical idle EI state An optical signal indicating that the second channel is in an EI state;
- An electrical signal driving module configured to: when the detecting module determines that the second optical signal is an optical signal indicating that the second channel is in an EI state, suppressing the third electrical signal sent to the second PCIe device a differential mode voltage, and transmitting the suppressed third electrical signal to the second PCIe device through the first channel.
- the embodiment of the present invention provides a communication system, including a first Peripheral Component Interconnect Express (PCIe) device, a second PCIe device, a second optical module, and a second optical module.
- the first optical module is connected to the second optical module by using an optical fiber, and the towel is:
- the first PCIe device is configured to send, by using the first channel, the first electrical signal to the first optical module that is connected to the first PCIe device;
- the first optical module is configured to detect whether a differential mode voltage of the first electrical signal is lower than a first threshold, if a differential mode voltage of the first differential electrical signal is lower than the first threshold Transmitting, by the first channel, the optical signal to the second optical module;
- the second optical module is configured to detect an optical power of the optical signal of the first channel, and when it is determined that the optical power of the first channel is lower than a threshold, suppress sending to the second PCIe device by using the first channel a differential mode voltage of the electrical signal, and transmitting the suppressed electrical signal to the second PCIe device through the first channel, the differential mode voltage of the suppressed electrical signal being lower than a second threshold.
- the first optical module includes: a detection control circuit, configured to detect a differential mode of the first electrical signal sent by the first PCIe device by using the first channel a voltage, if the differential mode voltage of the first electrical signal is lower than the first threshold, turning off a driving current of the first channel of the electro-optical conversion module to prohibit sending to the second optical module through the first channel Optical signal
- the electro-optical conversion module is configured to prohibit sending an optical signal through the first channel according to the control signal.
- the second optical module includes:
- a detecting module configured to detect optical power of the optical signal of the first channel
- an electrical signal driving module configured to: when determining that an optical power of the optical signal of the first channel is lower than the threshold, suppressing a differential mode voltage of an electrical signal sent to the second PCIe device by using the first channel, And transmitting, by the first channel, the suppressed electrical signal to the second PCIe device.
- a ninth aspect, the embodiment of the present invention provides a communication method, where the method is applied to a communication system for transmitting optical signals according to a Peripheral Component Interconnect Express (PCIe), the method includes:
- the first optical module detects a differential mode voltage of the first electrical signal sent by the first PCIe device through the first channel;
- the An optical module Determining, by the first optical module, whether a differential mode voltage of the first electrical signal is lower than a first threshold; if the differential mode voltage of the first electrical signal is lower than the first threshold, the An optical module generates a first control signal, where the first control signal is used to indicate that the first channel is in an Electrical Idle (EI) state;
- EI Electrical Idle
- the first optical module sends a first optical signal to the second optical module according to the first control signal, where The first optical signal is used to notify the second optical module to suppress a differential mode voltage of an electrical signal transmitted to the second PCIe device through the first channel.
- the method further includes:
- the first optical module receives the second optical signal sent by the second optical module by using the second optical channel; the first optical module converts the received second optical signal into an electrical signal;
- the first optical module determines, according to the electrical signal converted by the second optical signal, the second optical signal as an optical signal indicating that the second channel is in an EI state;
- the first optical module suppresses a differential mode voltage of an electrical signal sent by the second channel to the first PCIe device, where a differential mode voltage of the suppressed electrical signal is lower than a second threshold;
- the first optical module sends the suppressed electrical signal to the first PCIe device through the second channel.
- the generating, by the first optical module, the first control signal includes:
- the first optical module generates the first control signal according to a preset waveform for indicating a control signal that the communication channel is in an EI state.
- the method further includes:
- the first optical module generates a second control signal according to the first electrical signal, where the first electrical signal carries data sent by the first PCIe device;
- the first optical module sends a third optical signal to the second optical module according to the second control signal, where the third optical signal carries the data to be connected to the second optical module.
- the second PCIe device transmits the data.
- the embodiment of the present invention provides a communication method, where the method is applied to a communication system for transmitting optical signals according to a Peripheral Component Interconnect Express (PCIe), the method includes:
- the second optical module receives the first optical signal sent by the first optical module through the first channel
- the second optical module converts the received first optical signal into a second electrical signal
- the first optical signal Determining, by the second optical module, the first optical signal as an optical signal indicating that the first channel is in an Electrical Idle (EI) state according to the second electrical signal;
- the second optical module suppresses a differential mode voltage of the third electrical signal sent by the first channel to the second PCIe device, and the differential mode voltage of the suppressed third electrical signal is lower than a second threshold;
- the second optical module sends the suppressed third electrical signal to the second PCIe device by using the first channel.
- the determining, by the second optical module, that the first optical signal is an optical signal that indicates that the first channel is in an EI state, according to the second electrical signal includes: The second optical module determines, according to the waveform of the second electrical signal, the first optical signal as an optical signal indicating that the first channel is in an EI state.
- the embodiment of the present invention provides a communication method, where the method is applied to a communication system for transmitting optical signals according to a Peripheral Component Interconnect Express (PCIe), the method includes:
- the first optical module detects a differential mode voltage of the first electrical signal sent by the first PCIe device through the first channel;
- the first optical module Determining, by the first optical module, whether a differential mode voltage of the first electrical signal is lower than a first threshold; if the differential mode voltage of the first electrical signal is lower than the first threshold, the An optical module prohibits transmitting optical signals through the first channel.
- the communication method further includes: the first optical module detecting an optical power of an optical signal of the second channel;
- the first optical module sends the suppressed electrical signal to the first PCIe device by using the second channel, and the differential mode voltage of the suppressed electrical signal is lower than a second threshold.
- the embodiment of the present invention provides a communication method, where the method is applied to a communication system for transmitting optical signals according to a Peripheral Component Interconnect Express (PCIe), the method includes:
- the optical module connected to the PCIe chip is prohibited from transmitting the optical signal through the first channel.
- the disabling the optical module that is connected to the PCIe chip to send the optical signal by using the first channel includes:
- the optical module of the first channel of the optical module is prohibited from transmitting an optical signal by enabling the optical module control terminal TX-DISABLE.
- the prohibiting the PCIe chip includes:
- the central processing unit CPU Transmitting the detection result that the differential mode voltage is lower than the first threshold value to the central processing unit CPU by using an interrupt mode to control the laser of the first channel of the optical module connected to the PCIe chip to be closed by the CPU And transmitting a light signal by a laser that prohibits the first channel of the optical module.
- the differential mode voltage at the transmitting end of the interface module is detected, and when the differential mode voltage is lower than the threshold value, the optical module connected to the interface module is controlled to be turned off.
- the control optical module When the communication side uses the optical fiber communication, when the communication terminal detects that the differential mode voltage of the transmission signal is lower than the threshold, the control optical module is turned off, so that the transmitting end cannot output the noise signal, thereby Prevent the receiving end from receiving an abnormal signal and ensure that the optical fiber communication line is normal.
- FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present invention
- FIG. 1 is a flow chart of one embodiment of a method for suppressing PCIe outgoing optical fiber communication output noise according to the present invention
- FIG. 2 is a flow chart of another embodiment of a method for suppressing PCIe outgoing optical fiber communication output noise according to the present invention
- FIG. 3 is a flowchart of applying the present invention.
- FIG. 4 is a schematic diagram of another optical communication architecture to which an embodiment of the present invention is applied.
- FIG. 5 is a schematic diagram of another optical communication architecture to which an embodiment of the present invention is applied.
- FIG. 6 is a block diagram of an embodiment of an apparatus for suppressing PCIe outgoing optical fiber communication output noise according to the present invention
- FIG. 7 is a block diagram of an embodiment of a communication node according to the present invention.
- FIG. 8 is a schematic structural diagram of an optical module according to an embodiment of the present disclosure.
- FIG. 9 is a schematic structural diagram of still another optical module according to an embodiment of the present disclosure.
- FIG. 10 is a signaling diagram of a communication method according to an embodiment of the present invention.
- FIG. 11 is a signaling diagram of still another communication method according to an embodiment of the present invention.
- FIG. 12 is a flowchart of still another communication method according to an embodiment of the present invention.
- FIG. 13 is a signaling diagram of still another communication method according to an embodiment of the present invention. Concrete real
- the following embodiments of the present invention provide methods, apparatus, and communication nodes for suppressing PCIe out of fiber optic communication output noise.
- the communication system includes a first communication node 10, a second communication node 20, a first optical module 12, and a second optical module 22.
- the first communication node 10 and the second communication node 20 are both a Peripheral Component Interconnect Express (PCIe) device, and the first communication node 10 includes a first PCIe chip 14, and the second communication node 20 A second PCIe chip 24 is included.
- PCIe Peripheral Component Interconnect Express
- the first communication node 10 and the first optical module 12 are connected by a cable, and the second optical module 22 and the second communication node 20 are connected by a cable.
- the first optical module 12 and the second optical module 22 are used to perform conversion of electrical signals and optical signals.
- the first optical module 12 and the second optical module 22 are connected by an optical fiber 30.
- the first communication node 10 transmits data to the second communication node 20 as an example.
- the first communication node 10 can also serve as a receiving end
- the second communication node 20 can also serve as a transmitting end.
- the first optical module 12 connected to the first communication node 10 converts the electrical signal transmitted by the first PCIe chip 14 into an optical signal, and transmits it to the optical fiber 30.
- a second optical module 22 connected to the second communication node 20 is a second optical module 22 connected to the second communication node 20.
- the first communication node 10 and the second communication node 20 can be implemented. Communication between. It can be understood that, since the first optical module 12 and the second optical module 22 are connected by the optical fiber 30, even if the distance between the first communication node 10 and the second communication node 20 is long, the mutual completion can be completed through the optical fiber 30. Communication between.
- the first communication node 10 and the first optical module 12 can be independently configured.
- the first communication node 10 can be a single board, and the first optical module 12 can be connected to the first communication node through a corresponding connector. 10 sides of the board.
- the first communication node 10 and the first optical module 12 can also be integrated in the same communication device.
- the first communication node 10 is a single board, the first optical module 12 can also be located in the first communication through the corresponding connector.
- the second communication node 20 and the second optical module 22 can be independently configured, and the second communication node 20 and the second optical module 22 can also be integrated in the same communication. In the device. There is no limit here.
- the electrical Idle (EI) state of the link means that the D+ and D- voltages of the transmitting end of the PCIe chip remain stable, not The state in which the voltage (common mode voltage) is changed.
- the EI state usually occurs on the link when the link is switched or the link is in low power mode.
- the sender of the PCIe chip does not send data. For example, in the communication system shown in FIG.
- the link between the first communication node 10 and the second communication node 20 is at In the EI state, although the transmitting end of the first PCIe chip 14 will not have a valid differential electrical signal output, the second optical module 22 will still output a large amplitude noise signal.
- the noise signal may cause the differential mode voltage received by the second communication node 20 to be greater than 175 mV, such that the second communication node 20 mistakenly believes that the first communication node 10 has sent data, thereby causing the first communication node 10 and the second communication node 20 to The link status between the two is inconsistent. It should be noted that the first communication node 10 and the second communication node 20 shown in FIG.
- Embodiments of the present invention may refer to a device that implements communication according to the PCIe standard as a PCIe device. Referring to FIG. 1, a flow chart of an embodiment of a method for suppressing PCIe go optical fiber communication output noise according to the present invention is as follows:
- Step 101 Detect the differential mode voltage at the transmitting end of the interface module.
- the interface module of the originating communication node may be specifically a PCIe interface chip.
- the transmitting end of the interface module is provided with a differential pair. By detecting the voltage difference on the differential pair of the transmitting end, the differential mode voltage of the electrical signal transmitted by the transmitting end can be obtained.
- the optical module of the transmitting end converts the electrical signal into an optical signal, and after the optical signal is transmitted through the optical fiber to the optical module of the receiving end, the optical module of the receiving end will be The optical signal is then converted into an electrical signal and received by the receiving module of the terminating communication node.
- Step 102 When the differential mode voltage is lower than the threshold, the optical module connected to the interface module is controlled to be turned off.
- the laser of the optical module can be controlled to be turned off by enabling the control terminal TX_DISABLE of the optical module; or the internal integrated circuit to the optical module (Inter- Integrated) Circuit, I2C)
- the interface sends a shutdown command to control the laser of the optical module to be turned off.
- the detection result of the differential mode voltage below the threshold value can be sent to the central processing unit (CPU) through the interrupt mode.
- the CPU controls the laser of the optical module to be turned off. After the laser of the optical module of the transmitting end is turned off, the optical module of the transmitting end is no longer issued. The optical signal, therefore, does not receive the optical signal at the receiving end.
- the receiving communication node determines whether the differential mode voltage of the electrical signal received by the receiving communication node is below 65 mV (millivolt). In the electrical idle state, if the differential mode voltage of the electrical signal received by the receiving communication node is between 65 mV and 175 mV, the receiving communication node confirms that the transmitting communication node sends a noise signal, if the receiving communication node receives the electrical signal. When the differential mode voltage is above 175 mV, the receiving communication node confirms that the originating communication node has sent a normal signal.
- the embodiment of the present invention when the embodiment of the present invention is applied, if the differential mode voltage of the electrical signal sent by the originating communication node is below 175 mV, that is, when the transmitting end is in an electrical idle state, or when a noise signal is transmitted, if the optical module of the transmitting end is still turned on, the light is The illuminating characteristics of the module, the receiving communication node may receive an electrical signal with a differential mode voltage greater than 175 mV, resulting in inaccurate detection results. Therefore, when the threshold value is set to 175 mV, when the differential mode voltage of the transmitting end of the PCIe interface chip of the originating communication node is less than 175 mV, the optical module of the control end is turned off to ensure the optical communication link. normal.
- the transmitting end can control the optical module to be turned off when the differential mode voltage of the transmitted signal is detected to be lower than the threshold, so that the transmitting end cannot output the noise signal, thereby Prevent the receiving end from receiving an abnormal signal and ensure that the optical fiber communication line is normal.
- FIG. 2 another embodiment of a method for suppressing PCIe go optical fiber communication output noise according to the present invention is shown in the following figure:
- Step 201 Detect a differential mode voltage at a transmitting end of the interface module.
- the interface module of the originating communication node may be specifically a PCIe interface chip.
- the transmitting end of the interface module is provided with a differential pair. By detecting the voltage difference on the differential pair of the transmitting end, the differential mode voltage of the electrical signal transmitted by the transmitting end can be obtained.
- the optical module of the transmitting end converts the electrical signal into an optical signal, and after the optical signal is transmitted through the optical fiber to the optical module of the receiving end, the optical module of the receiving end will be The optical signal is then converted into an electrical signal and received by the receiving module of the terminating communication node.
- Step 202 Detect whether the differential mode voltage is lower than the threshold. If yes, go to step 203; otherwise, go to step 204.
- the interface module is specifically a PCIe interface chip, according to the definition of the PCIe standard, if the differential mode voltage of the electrical signal received by the receiving communication node is below 65 mV (millivolt), the receiving communication node confirms the originating communication node. In the electrical idle state, if the differential mode voltage of the electrical signal received by the receiving communication node is between 65mV and 175mV, the receiving communication node confirms that the transmitting communication node sends the noise. Signal, if the differential mode voltage of the electrical signal received by the receiving communication node is above 175 mV, the receiving communication node confirms that the originating communication node has sent a normal signal.
- the embodiment of the present invention when the embodiment of the present invention is applied, if the differential mode voltage of the electrical signal sent by the originating communication node is below 175 mV, that is, when the transmitting end is in an electrical idle state, or when a noise signal is transmitted, if the optical module of the transmitting end is still turned on, the light is The illuminating characteristics of the module, the receiving communication node may receive an electrical signal with a differential mode voltage greater than 175 mV, resulting in inaccurate detection results. Therefore, when the threshold value is set to 175 mV, when the differential mode voltage of the transmitting end of the PCIe interface chip of the originating communication node is less than 175 mV, the optical module of the control end is turned off to ensure the optical communication link. normal. It should be noted that the threshold value is set to 175 mV, which is only an example. In the actual application, the threshold value may be adjusted as needed, which is not limited in this embodiment of the present invention.
- Step 203 Control the optical module connected to the interface module to be closed, and return to step 201.
- the laser of the optical module when the optical module connected to the interface module is turned off, the laser of the optical module can be controlled to be turned off by enabling the control terminal TX_DISABLE of the optical module; or the shutdown command can be sent to the I2C interface of the optical module.
- the laser of the optical module is turned off.
- the detection result of the differential mode voltage lower than the threshold value may be sent to the CPU through an interrupt mode to control the laser of the optical module to be turned off by the CPU.
- Step 204 Control the optical module connected to the interface module to be turned on, and return to step 201.
- the control module TX_DISABLE of the optical module can be disabled to control the laser of the optical module to be turned on; or the open command can be sent to the I2C interface of the optical module.
- the laser that controls the optical module is turned on.
- the detection result that the differential mode voltage is higher than the threshold value may be sent to the CPU through an interrupt mode to control the laser of the optical module to be turned on by the CPU.
- the optical module of the transmitting end emits an optical signal, and performs normal optical fiber communication with the optical module of the receiving end.
- the transmitting end can control the optical module to be turned off when the differential mode voltage of the transmitted signal is detected to be lower than the threshold, so that the transmitting end cannot output the noise signal, thereby Prevent the receiving end from receiving an abnormal signal and ensure that the optical fiber communication line is normal.
- the embodiments of the present invention are described in detail below with reference to several optical communication architecture examples.
- Each of the following optical communication architectures includes two communication nodes, each of which includes a PCIe interface chip and a control circuit, and a PCIe interface of each communication node.
- the chip includes a transmitting end and a receiving end, that is, two communication nodes have peer-to-peer communication functions.
- the communication node on the left side is the originating communication node, and the right side
- the communication node is the terminating communication node.
- the optical module connected to the originating communication node and the optical module connected to the receiving communication node are connected by optical fibers, thereby realizing optical communication between the two communication nodes; the prosecution circuit can be based on a field programmable gate array (Field Programmable Gate) Array, FPGA) implementation.
- FIG. 3 a schematic diagram of an optical communication architecture for applying an embodiment of the present invention:
- the PCIe interface chip of the originating communication node and the prosecution circuit are separately set, and the differential pair is set on the transmitting end of the PCIe interface chip, respectively represented by D1+ and D1-, and the difference set on the PCIe interface chip of the receiving communication node is respectively
- the pair of D2+ and D2-, the detecting circuit of the originating communication node is connected to the differential pair D1+ and D1- to detect the differential mode voltage between D1+ and D1-, and the detecting circuit is also connected to the optical module, according to
- the control type is different, one of the control lines is connected to the control terminal TX_DISABLE of the optical film block, and the other control line can be connected to the I2C interface of the optical module.
- the detection circuit of the originating communication node detects the voltage difference between D1+ and D1- to obtain the differential mode voltage.
- the laser of the optical module can be controlled by enabling TX_DISABLE. If it is off, you can also control the laser shutdown of the optical module by sending a shutdown command to the I2C interface.
- the laser of the optical module of the transmitting end of the transmitting communication node is turned off, the communication between the optical module of the transmitting end of the transmitting node and the optical module of the receiving end of the transmitting end of the transmitting end is interrupted, thereby ensuring the accurate detection result of the differential mode voltage of the receiving communication node. Sex.
- the laser of the optical module can be controlled by enabling the TX_DISABLE control module, or the laser of the optical module can be controlled by sending an open command to the I2C interface. . After the laser of the optical module of the transmitting end of the transmitting communication node is turned on, the communication between the optical module of the transmitting end of the transmitting communication node side and the optical module of the receiving end of the receiving communication node side is resumed.
- FIG. 4 another schematic diagram of an optical communication architecture for applying the embodiment of the present invention:
- FIG. 4 another schematic diagram of an optical communication architecture for applying the embodiment of the present invention:
- FIG. 5 The same as FIG. 3 and FIG. 4 is that the prosecution circuit of the originating communication node in FIG. 5 is still connected to
- the differential pair of D1+ and D1- on the transmitting end of the PCIe interface chip is used to detect the differential mode voltage between D1+ and D1-; the difference from FIG. 3 and FIG. 4 is that the prosecution circuit in FIG. 5 is not directly connected to
- the optical module is connected to the CPU so that the opening and closing of the optical module can be controlled by the CPU control.
- the detection circuit of the originating communication node detects the voltage difference between D1+ and D1-, Obtaining the differential mode voltage, when the detected differential mode voltage is lower than 175mV, the detection result can be sent to the CPU through the interrupt mode.
- the CPU can control the laser of the optical module to be turned off by enabling TX_DISABLE, or can be sent off to the I2C interface.
- the command controls the laser of the optical module to be turned off.
- the communication between the optical module of the transmitting end of the transmitting end node and the optical module of the receiving end of the transmitting end of the receiving end is interrupted, thereby ensuring the accurate detection result of the differential mode voltage of the receiving communication node.
- Sex When the detected differential mode voltage is higher than 175mV, it indicates that the originating communication node needs to transmit a normal signal, so the prosecution circuit of the originating communication node can send the detection result to the CPU through the interrupt mode, and the CPU can disable the TX_DISABLE control optical module by enabling the TX_DISABLE.
- the laser is turned on, and the laser of the optical module can be controlled to be turned on by sending an open command to the I2C interface. After the laser of the optical module of the transmitting end of the originating communication node is turned on, the communication is resumed between the optical module of the transmitting end of the transmitting end node and the optical module of the receiving end of the receiving end of the communication node.
- the prosecution circuit is separately disposed from the PCIe interface chip. In practical applications, the prosecution circuit may also be integrated on the PCIe interface chip, which is not limited in the embodiment of the present invention.
- the present invention also provides an embodiment of an apparatus and communication node for suppressing PCIe out of fiber optic communication output noise.
- an embodiment of an apparatus for suppressing PCIe outgoing optical fiber communication output noise includes: a detecting unit 610 and a control unit 620.
- the detecting unit 610 is configured to detect a differential mode voltage at a transmitting end of the interface module
- the control unit 620 is configured to control, when the differential mode voltage detected by the detecting unit 610 is lower than a threshold, to control the optical module connected to the interface module to be turned off.
- control unit 620 may include at least one of the following units (not shown in FIG. 6): a first control subunit, configured to control the optical module by enabling the control terminal TX_DISABLE of the optical module Laser off;
- the second control subunit is configured to control the laser of the optical module to be turned off by sending a shutdown command to the I2C interface of the optical module.
- control unit 620 may be specifically configured to send, by using an interrupt mode, a detection result that the differential mode voltage is lower than a threshold value to a central processing unit CPU, to control a laser of the optical module by using the CPU. shut down.
- control unit 620 is further configured to: when the differential mode voltage detected by the detecting unit 610 is higher than the threshold, control an optical module connected to the interface module to be turned on.
- FIG. 7 a block diagram of an embodiment of a communication node according to the present invention is shown:
- the communication node includes: a PCIe interface chip 710 and a prosecution circuit 720 connected to the transmitting end of the PCIe interface chip 710.
- the detecting circuit 720 is configured to detect a differential mode voltage of the transmitting end of the PCIe interface chip 710. When the differential mode voltage is lower than a threshold, the optical module connected to the PCIe interface chip 710 is controlled to be turned off. .
- the spoofing circuit 720 is specifically configured to control the laser of the optical module to be turned off by enabling the control terminal TX.DISABLE of the optical module, or by sending a shutdown command to the I2C interface of the optical module. And controlling the laser of the optical module to be turned off.
- the communication node may further include a CPU (not shown in FIG. 7): the prosecution circuit 720 may be configured to send, by using an interrupt mode, the detection result that the differential mode voltage is lower than a threshold value.
- the CPU is configured to control a laser of the optical module to be turned off.
- the detecting circuit 720 is further configured to control, when the differential mode voltage is higher than the threshold, the optical module connected to the PCIe interface chip 710 to be turned on.
- the prosecution circuit 720 can be integrated on the PCIe interface chip 710. It can be seen from the above embodiment that the differential mode voltage of the transmitting end of the interface module is detected, and when the differential mode voltage is lower than the threshold value, the optical module connected to the interface module is controlled to be turned off.
- the control optical module is turned off, so that the transmitting end cannot output the noise signal, thereby Prevent the receiving end from receiving an abnormal signal and ensure that the optical fiber communication line is normal.
- the prosecution circuit is in control and the PCIe interface.
- the optical module connected to the chip is turned off, only one channel of the optical module can be turned off, so that one channel that is turned off does not send an optical signal.
- the light emitting device in the optical module is a laser array
- the detecting circuit can prevent the laser of one channel of the optical module from transmitting the optical signal without affecting the state of the other channels.
- the PCIe interface chip in the embodiment of the present invention may also be referred to as a PCIe core chip. FIG.
- the optical module 80 shown in FIG. 8 can be the first optical module 12 or the second optical module 22 shown in FIG. 1-A.
- the optical module 80 shown in FIG. 8 will be described below with reference to FIG. 1-A.
- the optical module 80 can include: a driving module 82 , an electro-optical conversion module 84 , a photoelectric conversion module 86 , a detection module 87 , and an electrical signal driving module 88 .
- the driving module 82 is connected to the transmitting end of the PCIe chip, and is generally used for realizing equalization and amplification of an electrical signal sent by a transmitting end of the PCIe chip, and generating a driving signal according to an electrical signal sent by the PCIe chip.
- the driving module 82 may be specifically a laser driving chip.
- a prosecution circuit 822 is integrated in the drive module 82.
- the prosecution circuit 822 can include a detection circuit 8221 and a control circuit 8222. among them:
- the detecting circuit 8221 is configured to detect whether a differential mode voltage of the differential electrical signal sent by the PCIe chip is lower than a preset threshold.
- the control circuit 8222 is configured to generate a control signal according to the detection result of the detection circuit 8221 to implement control of the optical signal sent by the electro-optical conversion module 84.
- the control circuit 8222 can be a laser control circuit, and the control signal generated by the control circuit 8222 can be a laser drive signal.
- the laser driving signal generated by the control circuit 8222 is specifically an electrical signal.
- the laser driving signal may be a voltage signal or a current signal.
- the receiving end of the electro-optical conversion module 84 is connected to the output end of the driving module 82.
- the transmitting end of the electro-optical conversion module 84 is connected to the optical module of the receiving end through an optical fiber. Specifically, the transmitting end of the electro-optical conversion module 84 can pass the optical fiber and the receiving end optical module.
- the photoelectric conversion modules of (for example, the second optical module 22 in Fig. 1-A) are connected.
- the electro-optic conversion module 84 is operative to transmit an optical signal based on a control signal generated by the control circuit 8222 in the drive module 82.
- the electro-optic conversion module 84 is configured to convert the control signal generated by the driving module 82 into an optical signal, and send the converted optical signal through the optical fiber.
- the electro-optical conversion module 84 can be a laser, a laser array, or a light-emitting diode (LED).
- the electro-optical conversion module 84 can be a Vertical Cavity Surface Emitting Laser (VCSEL).
- VCSEL Vertical Cavity Surface Emitting Laser
- the electro-optical conversion module 84 can emit a modulated optical signal of a corresponding rate according to a driving signal sent from the driving module 82, and an optical power automatic control circuit is provided inside the electro-optical conversion module 84, so that the power of the output optical signal can be stabilized.
- the photoelectric conversion module 86 is configured to receive the transmitting optical module (for example, the first light in FIG. 1-A). Module 12) transmits the optical signal and converts the received optical signal into an electrical signal.
- the photoelectric conversion module 86 can be a photodiode or a photodiode array. It can be understood that the electrical signal converted by the photoelectric conversion module 86 can be a current signal.
- the detecting module 87 is configured to detect the optical power of the optical signal received by the photoelectric conversion module 86 or the waveform of the electrical signal obtained by detecting the conversion of the optical signal received according to the photoelectric conversion module 86.
- a part of the optical signal separated by the optical signal received by the photoelectric conversion module 86 may be detected by the detecting module 87 by using a splitting technique to detect the optical power of the received optical signal or to implement the light according to the light. Detection of the waveform of the electrical signal obtained by signal conversion.
- the detection module 87 can send its detection result to the electrical signal driving module 88.
- the electrical signal driving module 88 can control the differential mode voltage of the differential electrical signal output by the electrical signal driving module 88 to the input end of the PCIe chip according to the detection result of the detecting module 87. It can be understood that the detection module 87 can be integrated or integrated in the electrical signal driving module 88, which is not limited herein.
- the input end of the electrical signal driving module 88 is respectively connected to the output end of the photoelectric conversion module 86 and the output end of the detecting module, and the output end of the electric signal driving module 88 is connected to the receiving end of the PCIe chip.
- the electrical signal driving module 88 is configured to implement processing of the electrical signal converted by the photoelectric conversion module 86 according to the detection result of the detecting module 87, so that the differential electrical signal satisfying the requirement can be output to the receiving end of the PCIe chip.
- the electrical signal driving module 88 can control whether or not the electrical signal converted by the photoelectric conversion module 86 is transmitted to the PCIe chip.
- the electrical signal driving module 88 can process the electrical signals transmitted to the PCIe chip so that the differential electrical signals that meet the requirements can be output to the receiving end of the PCIe chip.
- the processing of the electrical signal by the electrical signal driving module 88 includes at least one processing manner of converting, amplifying, limiting or pre-emphasizing the electrical signal.
- the electrical signal driving module 88 may include a Trans-impedance amplifier (TIA).
- the optical module 80 may further include a micro control module, and the micro control module may be performed by the management channel and the monitoring channel and the driving module 82, the electro-optical conversion module 84, the photoelectric conversion module 86, the detecting module 87, and the electrical signal driving module 88. Interaction.
- the micro-control module can also implement information interaction with the PCIe device including the PCIe chip through an inter-integrated circuit (I2C) interface, so as to implement management and monitoring of the optical module 80 by the PCIe device.
- I2C inter-integrated circuit
- FIG. 9 is a schematic structural diagram of another optical module according to an embodiment of the present invention.
- FIG. 9 differs from the optical module shown in FIG. 8 in that, in the optical module shown in FIG. 9, the detecting circuit 8221 is located outside the driving module 82, and the peripheral circuit as the driving module 82 is independently present.
- FIG. 10 is a signaling diagram of still another communication method according to an embodiment of the present invention, where the method is applied to a communication system that transmits optical signals according to the PCIe standard. The method can be used when the communication channel is in the EI state. The noise output by the light-making module on the channel keeps the communication status at both ends of the link consistent.
- the method can be implemented by the optical module shown in FIG. 1-A, FIG. 8, or FIG. In order to clearly show the transmission process of the signal, FIG.
- FIG. 11 illustrates a module involved in processing a signal when the first optical module 12 is used as a transmitting optical module when the communication channel is in the EI state, and a module involved in processing the signal when the second optical module 22 is the receiving optical module.
- both the first optical module 12 and the second optical module 22 can be used as the signal sent by the PCIe device as the transmitting optical module, or can be used as the signal received by the receiving optical module on the PCIe device. Process it.
- the communication method in FIG. 10 will be described below with reference to FIGS. 1-A and 11. As shown in FIG.
- the method may include: In step 1000, the first optical module 12 receives the first electrical signal 901 sent by the first PCIe chip 14 through the first channel.
- the PCIe chip transmitting end can simultaneously send multiple data signals to the receiving end PCIe chip through multiple lanes (lane) to improve the efficiency of data transmission.
- the PCIe chip transmitter can transmit data to the receiving PCIe chip through one channel, two channels, four channels, eight channels or 16 channels at the same time.
- the transmitting end of each channel includes a set of transmitters and receivers, and the receiving end of each channel also includes a set of transmitters and receivers.
- the transmitter PCIe chip can only support one channel of signal transmission, the transmitter PCIe chip includes a set of transmitters and receivers, and the receiving end PCIe chip also includes a set of transmitters and receivers; if the PCIe chip can Supporting 4 channels of signal transmission, the transmitter PCIe chip can include 4 sets of transmitters and receivers, and the receiver PCIe chip also needs to include 4 sets of transmitters and receivers.
- a group of transmitters and receivers includes a transmitter and a receiver.
- the channel link When a link state switching or low power mode occurs on a channel of the PCIe chip, the channel link will be in the EI state. It can be understood that in optical fiber communication, transmission channels are independent of each other and do not affect each other. For example, when an EI state occurs in one channel, it does not affect the data transmission of other channels.
- the channel is referred to as being established between the transmitting end PCIe chip (for example, the PCIe chip 14) and the receiving end PCIe chip (for example, the PCIe chip 24) through the first optical module and the second optical module.
- a communication channel for transmitting data for example, the transmitting end PCIe chip 14
- the receiving end PCIe chip for example, the PCIe chip 24
- the transmitting end PCIe chip sends information from the first channel
- the receiving end PCIe chip will receive information through the first channel.
- the communication channel described in the embodiment of the present invention can be understood as a path that passes during data transmission.
- the first channel in the embodiment of the present invention refers to any channel in which the PCIe chip transmits data.
- the first optical module 12 determines that the differential mode voltage of the first electrical signal 901 is lower than the first threshold.
- the differential mode voltage of the first electrical signal 901 may be detected by the detecting circuit 8221 in the first optical module 12, and it is determined whether the differential mode voltage of the first electrical signal 901 is lower than the first gate. Limit.
- the detecting circuit 8221 can specifically detect the differential mode voltage of the first electrical signal 901 by detecting the voltage amplitude of the first electrical signal 901.
- the processing of the first optical module 12 and the second optical module 22 when the differential mode voltage of the first electrical signal 901 is lower than the first threshold is described as an example.
- the first threshold is a preset threshold value of the differential mode voltage of the electrical signal transmitted by the PCIe chip when the communication channel is in the EI state.
- the receiving end PCIe chip if the differential mode voltage of the electrical signal received by the receiving PCIe chip is below 65mV (millivolts), the receiving end PCIe chip considers the communication channel to be in an idle state. If the differential mode voltage of the electrical signal received by the receiving end PCIe chip is above 175 mV, the receiving end PCIe chip confirms that the communication channel has exited the electrical idle state, and the transmitting end PCIe chip transmits the data signal.
- the noise generated on the communication link of the channel is considered.
- the differential mode voltage of the differential electrical signal received at the receiving end of the first optical module 12 may be higher than 65 mV.
- the first threshold value may be set to 175 mV in consideration of noise generated on the communication link.
- the detecting circuit 8221 when the detecting circuit 8221 is located in the optical module 12, when the detecting circuit 8221 detects that the differential mode voltage of the first electrical signal 901 of the first channel is lower than 175 mV, the PCIe chip 14 of the originating communication node 10 is considered to be The first channel is in the EI state.
- the first threshold can also be set to 65 mV without considering the noise generated on the communication link. It should be noted that, the first threshold value is set to 175 mV or 65 mV, which is only an example. In an actual application, the first threshold value may be adjusted according to actual needs, which is not limited by the embodiment of the present invention. It can be understood that the first threshold value in the embodiment of the present invention is not higher than 175 mV.
- the first optical module 12 In step 1010, the first optical module 12 generates a first control signal 902, which is used to indicate that the first channel is in an EI state.
- the first optical module 12 considers that the first channel of the first PCIe chip 14 is in the EI state, in the step 1005, the first module 12 determines that the differential mode voltage of the first electrical signal 901 is lower than the first threshold.
- the first optical module 12 generates a first control signal 902, and the first control signal 902 is used to indicate that the first channel is in an EI state.
- the first control signal 902 can be generated by the control circuit 8222 of the detection circuit 822 in the first optical module 12 according to the detection result of the detection circuit 8221, and the first control signal 902 can be sent to the electro-optical conversion module 84.
- the first control signal 902 can be a drive signal of the electro-optical conversion module 84, wherein the drive signal can include a drive current signal.
- the electro-optic conversion module 84 is a laser or a laser array
- the first control signal 902 can be a drive current signal of the laser for controlling the laser of the first channel to emit a modulated light signal of a corresponding rate.
- the first optical module 12 In order to enable the first optical module 12 to transmit optical signals and transmit data when the communication channel is in the EI state.
- the transmitted optical signals are differentiated, and the first optical module 12 can generate the first control signal 902 according to a preset pattern of a control signal indicating that the communication channel is in the EI state.
- the embodiment of the present invention can distinguish the waveform of the control signal when the communication channel is in the EI state from the waveform of the control signal when the data is transmitted.
- the frequency of the control signal when the communication channel is in the EI state may be different from the frequency of the control signal when the data is transmitted, so that the frequency and transmission of the optical signal emitted by the optical module when the communication channel is in the EI state
- the frequency of the optical signal emitted by the data time module is different.
- the amplitude of the control signal when the communication channel is in the EI state may be different from the amplitude of the control signal when the data is transmitted, so that the optical power and transmission of the optical signal emitted by the optical module when the communication channel is in the EI state
- the optical power of the optical signal emitted by the data time module is different.
- the waveform of the control signal when the communication channel is in the EI state is not limited, as long as it can be distinguished from the waveform of the control signal when the data is transmitted, thereby enabling the light transmitted by the optical module when the communication channel is in the EI state.
- the signal can be distinguished from the optical signal transmitted by the optical module when transmitting data.
- the control signal generated when the first PCIe chip 14 transmits data is referred to as a second control signal 907, and the optical signal sent by the first optical module 12 according to the second control signal 907 is referred to as an optical signal.
- the first optical module 12 sends a first optical signal 903 to the second optical module 22 according to the first control signal 902.
- the probing circuit 822 in the first optical module 12 sends a first control signal 902 to the electro-optical conversion module 84.
- the first control signal 902 is used to drive the electro-optical conversion module 84 to transmit the first optical signal 903 according to the first control signal 902.
- the first control signal 902 can be a driving current signal, and the intensity of the optical signal emitted by the electro-optical conversion module 84 can be controlled according to the magnitude of the driving current of the first control signal 902, or can be controlled according to the control signal 902.
- the frequency controls the frequency of the optical signal emitted by the electro-optical conversion module 84.
- the electro-optical conversion module 84 in the first optical module 12 can transmit the first optical signal 903 through the first channel according to the first control signal 902.
- the electro-optical conversion module 84 in the first optical module 12 can control the laser of the first channel to transmit the first optical signal 903 according to the first control signal 902 without affecting the light of other channels. Signal transmission.
- the first optical module 12 and the second optical module 22 are connected by the optical fiber 30, so that the first optical module 12 can send the first optical signal 903 to the second optical module 22 through the optical fiber 30.
- the waveform of the first control signal 902 may be different from the waveform of the second control signal 907 when the data is transmitted, the first optical signal 903 and the electro-optical conversion generated by the electro-optical conversion module 84 according to the first control signal 902
- the third optical signal 908 generated by the module 84 in accordance with the second control signal 907 is different.
- the second optical module 22 converts the first optical signal 903 into a second electrical signal 904.
- the photoelectric conversion module 86 in the second optical module 22 can convert the first optical signal 903 into a second electrical signal 904.
- the photoelectric conversion module 86 can be a photodiode. The specific form of the photoelectric conversion module 86 is not limited herein, as long as the optical signal can be converted into an electrical signal.
- the second optical module 22 determines, based on the second electrical signal 904, the first optical signal 903 as an optical signal indicating that the first channel is in an EI state.
- the second optical module 22 can determine, according to the waveform of the second electrical signal 904, whether the first optical signal 903 is an optical signal indicating that the first channel is in an EI state. If the waveform of the second electrical signal 904 is the same as the waveform of the predetermined control signal indicating that the communication channel is in the EI state, the first optical signal 903 is determined to be an optical signal indicating that the first channel is in the EI state.
- the waveform of the second electrical signal 904 is different from the waveform of the preset control signal indicating that the communication channel is in the EI state, it is determined that the first optical signal 903 is not used to indicate that the first channel is in the EI state. signal.
- the detecting module 87 of the second optical module 22 can detect the waveform of the second electrical signal 904 converted by the first optical signal 903 received by the photoelectric conversion module 86 by using a spectroscopic technique, so that it can be determined whether the waveform of the second electrical signal 904 is
- the waveform is the same as the preset control signal for indicating that the communication channel is in the EI state.
- a part of the optical signal of the first optical signal 903 can be input to the detecting module 87 by using a spectroscopic technique, and the detecting module 87 converts part of the optical signal of the first optical signal 903 into an electrical signal, and detects the waveform of the converted electrical signal. Thereby, the waveform of the second electrical signal 904 can be obtained.
- the second optical module 22 suppresses the differential mode voltage of the third electrical signal 905 outputted to the second PCIe chip 24 through the first channel, and the differential mode voltage of the suppressed third electrical signal 905 is lower than the first mode.
- the electrical signal driving module 88 in the second optical module 22 is generally used to process the electrical signals output by the photoelectric conversion module 86 so as to be able to output a satisfactory electrical signal to the second PCIe chip 24.
- the second electrical signal 904 may be processed according to the detection result of the detecting module 87, so as to be able to be
- the PCIe chip 24 outputs a third electrical signal 905 that meets the requirements. If the detecting module 87 in the second optical module 86 determines that the first optical signal 903 is an optical signal indicating that the communication channel is in the EI state according to the second electrical signal 904, it indicates that the first optical signal 903 is not transmitting data. .
- the communication state of the PCIe chips at both ends of the first channel is kept consistent, and the second optical module 22 is maintained.
- the electric signal driving module 88 in the middle can suppress the differential mode voltage of the output third electrical signal 905.
- the differential mode voltage of the suppressed third electrical signal 905 is lower than the second threshold value, so that the differential mode voltage of the electrical signal received by the second PCIe chip 24 is lower than 175 mV, so that the second PCIe chip 24 can be notified to be maintained. Place The receiving end of the first channel is in the EI state.
- the second threshold value can be set according to actual conditions, and is not limited herein. In practical applications, considering the noise on the link, the second threshold value should not exceed 175 mV.
- the second optical module 22 outputs the suppressed third electrical signal 905 to the second PCIe chip 24 through the first channel. Since the second optical module 22 suppresses the differential mode voltage of the third electrical signal 905 in step 1030, the differential mode voltage of the suppressed third electrical signal 905 is lower than the second threshold, and therefore, in step 1035 After the second optical module 22 outputs the suppressed third electrical signal 905 to the second PCIe chip 24 through the first channel, the differential mode voltage of the electrical signal received by the second PCIe chip 24 is not higher than 175 mV. Thus, the second PCIe chip 24 does not mistake the received electrical signal for data. The effect of noise on the link on the link state of the first channel when the first channel of the first PCIe chip 14 is in the EI state is avoided.
- the first optical module 12 can transmit the first optical signal 903 to the second optical module 22 through the first channel between the existing optical modules, where the first channel is in the non- In the EI state, the first channel can be used to transfer data.
- a fiber channel may be added between the first optical module 12 and the second optical module, and the added fiber channel is not used to transmit data.
- the added Fibre Channel is specifically used to transmit an optical signal generated according to a preset control signal indicating that the communication channel is in the EI state when the communication channel is in the EI state, so that a communication channel is in the EI state. Passed to the second optical module 22. Thereby, the second optical module 22 can process the differential mode voltage of the electrical signal outputted to the second PCIe chip 24 through the corresponding communication channel.
- the communication method described in the foregoing embodiment when the first optical module detects that the first channel of the first PCIe chip is in the EI state, passes the first channel according to a preset control signal indicating that the communication channel is in the EI state. Sending an optical signal to the second optical module to notify the second optical module that the first channel is in an EI state.
- the second optical module suppresses a differential mode voltage of the differential electrical signal transmitted to the second PCIe chip according to the received optical signal indicating that the first channel is in the EI state.
- FIG. 12 is a signaling diagram of still another communication method according to an embodiment of the present invention, where the method is applied to a communication system that transmits optical signals according to the PCIe standard.
- the method can suppress the noise outputted by the optical module on the channel when the communication channel is in the EI state, and can maintain the link state between the PCIe chip of the transmitting end and the PCIe chip of the receiving end.
- the method can be implemented by the optical module shown in FIG. 1-A, FIG. 8, or FIG.
- the method also uses the first PCIe chip 14 as the transmitting end and the second PCIe chip 24 as the receiving end.
- the end is described as an example. 12 is described below with reference to FIG. 1-A and FIG. 8.
- the method may include:
- step 1200 the first optical module 12 receives the first electrical signal 901 sent by the first PCIe chip 14 through the first channel.
- Step 1200 is similar to step 1000 shown in FIG. 10. For details, refer to the description of step 1000 shown in FIG.
- step 1205 the first optical module 12 determines that the differential mode voltage of the first electrical signal 901 is below a first threshold.
- Step 1205 is similar to step 1005 shown in FIG. 10. For details, refer to the description of step 1005 shown in FIG.
- the first optical module 12 In step 1210, the first optical module 12 generates a third control signal.
- the third control signal is used to prohibit the photoelectric conversion module 84 in the first optical module 12 from transmitting an optical signal through the first channel.
- the third control signal can be a current signal.
- the detection circuit 8221 in the first optical module 12 detects that the differential mode voltage of the first electrical signal 901 of the first channel is lower than the first threshold, the detection circuit The control circuit 8222 can be notified to turn off the drive current of the laser of the first channel of the photoelectric conversion module 84 to inhibit the laser of the photoelectric conversion module 84 from transmitting the optical signal through the first channel.
- the first optical module 12 prohibits transmitting the optical signal through the first channel according to the third control signal.
- the electro-optical conversion module 84 is taken as an example of the laser array, because the detection circuit 8221 in the first optical module 12 detects that the differential mode voltage of the first electrical signal 901 of the first channel is lower than the first threshold.
- the control circuit 8222 turns off the driving current of the laser of the first channel of the photoelectric conversion module 84, and the laser of the first channel of the photoelectric conversion module 84 does not transmit the optical signal.
- the first optical module 12 when the differential mode voltage of the first electrical signal 901 of the first channel of the first PCIe chip 14 is detected to be lower than the first threshold, the first optical module 12 is prohibited from transmitting light through the first channel. signal. Therefore, when the first channel of the first PCIe chip 14 is in the EI state, the output of the link noise is controlled from the transmitting end, preventing the receiving end from receiving an abnormal signal, and ensuring that the optical fiber communication line is normal.
- the second optical module 22 detects the optical power of the optical signal of the first channel.
- the detecting module 87 of the second optical module 22 can detect the optical power of the optical signal of the first channel by using a splitting technique.
- the detecting module 87 can convert the split optical signal into a current signal through a dedicated photodiode, and calculate the optical power of the optical signal of the first channel according to the current magnitude of the converted current signal.
- the second optical module 22 determines that the optical power of the optical signal of the first channel is below a threshold.
- the threshold value is a threshold value for the optical power of the optical signal received by the second optical module 22, and the optical power of the optical signal received by the second optical module 22 is lower than the threshold.
- the first The two-light module 22 considers that no valid optical signal has been received. It can be understood that the threshold is smaller than the optical power value of the optical signal for transmitting data, and the specific value of the threshold of the optical power is not limited in the embodiment of the present invention. It can be understood that, referring to FIG.
- the first optical module 22 since the first optical module 12 prohibits transmitting the optical signal through the first channel in step 1215, the first optical module 22 detects the first in step 1225.
- the optical power of the optical signal of the channel may be lower than the threshold, and the second optical module 22 does not receive a valid optical signal through the first channel.
- the second optical module 22 suppresses the differential mode voltage of the electrical signal outputted to the second PCIe chip 24 through the first channel.
- the differential mode voltage of the suppressed electrical signal is lower than the second threshold.
- some electrical signals may be input at the input end of the electrical signal driving module 88 of the second optical module 22 in consideration of the influence of noise on the link.
- the electrical signal driving module 88 in the second optical module 22 can suppress the differential mode voltage of the electrical signal outputted to the second PCIe chip 24 through the first channel according to the detection result of the detecting module 87, after the suppression.
- the differential mode voltage of the electrical signal is lower than the second threshold such that the differential mode voltage of the electrical signal received by the second PCIe chip 24 is less than 175 mV.
- the second threshold value reference may be made to the related description of the embodiment of Fig. 10.
- step 1235 the second optical module 22 outputs the suppressed electrical signal to the second PCIe chip 24 through the first channel. Since in step 1230, the second optical module 22 suppresses the differential mode voltage of the electrical signal to be output to the second PCIe chip 24 through the first channel, so that the differential mode voltage of the suppressed electrical signal is lower than the first Two thresholds. Therefore, in step 1235, after the second optical module 22 outputs the suppressed electrical signal to the second PCIe chip 24 through the first channel, the differential mode voltage of the electrical signal received by the second PCIe chip 24 is lower than 175 mV. . Therefore, the second PCIe chip 24 does not mistake the electrical signal for data, and the second PCIe chip 24 is prevented from receiving the abnormal signal.
- the first optical module 12 prohibits the transmission of the optical signal through the first channel.
- the second optical module 22 suppresses the differential mode voltage of the electrical signal to be output to the second PCIe chip 24 through the first channel when the first optical module 12 prohibits transmitting the optical signal through the first channel.
- the output of the road noise can be controlled by the method shown in FIG. 12, preventing the second PCIe chip 24 from receiving an abnormal signal when the communication channel is in the EI state, and ensuring that the optical fiber communication line is normal.
- the second PCIe chip 24 can determine that the first channel of the first PCIe chip 14 remains in the EI state according to the differential mode voltage of the received electrical signal, thereby ensuring that the link states at both ends of the first channel are consistent.
- the embodiment of the present invention may further include a communication method as shown in FIG. 13 on the basis of the communication method shown in FIG. 10 or FIG.
- FIG. 13 is still another communication party according to an embodiment of the present invention;
- the signaling diagram of the communication method shown in FIG. 13 describes the processing procedure of the optical module when the transmitting end PCIe chip and the receiving end PCIe chip normally transmit data.
- the method can be implemented by the optical module shown in FIG. 1-A, FIG. 8, or FIG.
- the method shown in FIG. 13 is also described by taking the first PCIe chip 14 as the transmitting end and the second PCIe chip 24 as the receiving end. 13 will be described below with reference to FIGS. 1-A, 8, and 11.
- the signaling described in FIG. 13 can be specifically referred to the signaling indicated by a broken line in FIG. As shown in FIG. 13, the method may include:
- the first optical module 12 receives the fourth electrical signal 906 sent by the first PCIe chip 14 through the first channel.
- the fourth electrical signal 906 carries data information to be transmitted by the first PCIe chip 14.
- the first optical module 12 determines that the differential mode voltage of the fourth electrical signal 906 is not lower than the first threshold.
- the differential mode voltage of the fourth electrical signal 906 may be detected by the detecting circuit 8221 in the first optical module 12, and the differential mode voltage of the fourth electrical signal 906 is determined to be lower than the first threshold.
- the detecting circuit 8221 can specifically detect the differential mode voltage of the fourth electrical signal 906 by detecting the voltage amplitude of the fourth electrical signal 906. Since the first threshold value is a preset threshold value of the differential mode voltage of the electrical signal transmitted by the PCIe chip when the communication channel is in the EI state, as described in step 1005 of FIG.
- the receiving end PCIe chip confirms that the communication channel has exited the electrical idle state, and the transmitting end PCIe chip transmits the data signal. Therefore, it can be understood that the first threshold is not higher than 175 mV. Since the fourth electrical signal 906 carries the data information transmitted by the first PCIe chip 14, the detection circuit 8221 in the first optical module 12 can detect that the differential mode voltage of the fourth electrical signal 906 is not lower than the preset location. The first threshold is stated.
- the first optical module 12 generates a second control signal 907.
- the detecting circuit 8221 in the first optical module 12 detects that the differential mode voltage of the fourth electrical signal 906 is not lower than the first threshold, the first channel of the first PCIe chip 14 is already Exiting the EI state, the first channel of the first PCIe chip 14 transmits normal data.
- the detection circuit 8221 can transparently transmit the fourth electrical signal 906 to the control circuit 8222, and the control circuit 8222 generates a second control signal 907 according to the fourth electrical signal 906, and sends a second control signal 907 to the electro-optical conversion module 84.
- the second control signal 907 can be a drive signal of the electro-optical conversion module 84, wherein the drive signal can include a drive current signal. It should be noted that, since the second control signal 907 is generated according to the fourth electrical signal 906 carrying the data information, the waveform of the second control signal 907 and the preset control signal for indicating that the communication channel is in the EI state. The waveform is different. It can be understood that the first PCIe core is carried in the fourth electrical signal 906. The data information transmitted by the slice 14 is such that the data information transmitted by the first PCIe chip 14 is also carried in the second control signal 907 generated according to the fourth electrical signal 906.
- the first optical module 12 transmits a third optical signal 908 to the second optical module 22 through the first channel according to the second control signal 907.
- the electro-optical conversion module 84 in the second optical module 12 can control, according to the second control signal 907, a modulated optical signal that emits a corresponding rate through the first channel.
- the third optical signal 908 carries data information sent by the first PCIe chip 14.
- the first optical module 12 can transmit the third optical signal 908 to the second optical module 22 through the optical fiber 30.
- the second optical module 22 converts the third optical signal 908 into a fifth electrical signal 909.
- the photoelectric conversion module 86 in the second optical module 22 can convert the third optical signal 908 into the fifth electrical signal 909.
- the photoelectric conversion module 86 can be a photodiode.
- the second optical module 22 determines that the waveform of the fifth electrical signal 909 is different from the waveform of the preset control signal for indicating that the communication channel is in the EI state.
- the detecting module 87 in the second optical module 22 can detect the waveform of the fifth electrical signal 909 converted by the third optical signal 908 received by the photoelectric conversion module 86 by using a spectroscopic technique, so that the fifth electrical signal 909 can be determined.
- the waveform of the waveform is different from the waveform of the preset control signal for indicating that the communication channel is in the EI state.
- the second optical module 22 sends a sixth electrical signal 910 to the second PCIe chip 24 according to the fifth electrical signal 909, where the sixth electrical signal 910 carries the data information sent by the first PCIe chip 14. .
- the electrical signal driving module 88 in the second optical module 22 does not perform the differential mode voltage on the sixth electrical signal 910. inhibition.
- the second PCIe chip 24 is capable of identifying data transmitted by the first PCIe chip 14 from the sixth electrical signal 910. Thereby, data transmission between the first PCIe chip 14 and the second PCIe chip 24 is completed.
- the communication flow shown in FIG. 13 describes a normal data transmission process between the first PCIe chip 14 and the second PCIe chip 24, similar to the transmission process of the transmission data in the communication system transmitting optical signals according to the PCIe standard in the prior art. Therefore, it will not be described in detail here.
- the first optical module adopts a processing method as described in FIG.
- the second optical module 22 can determine that the third optical signal 908 is an optical signal for transmitting data by detecting the optical power of the third optical signal 908. Since the third optical signal 908 carries data, the optical power of the third optical signal 908 is not lower than a preset second threshold, so that the transmitted data signal can be determined according to the optical power of the third optical signal 908. .
- the implementation of the remaining steps can be referred to the relevant steps in Figure 13, and will not be specifically described here.
- the first optical module 12 when the first optical module 12 is used as the receiving optical module, the first optical module 12 may also be used as the optical signal sent by the second optical module 22 when the communication channel is in the EI state. Process it.
- the first optical module 12 When the second optical channel is in the EI state, the first optical module 12 is used as a receiving optical module to receive the special optical signal sent by the second optical module 22 through the second channel for processing.
- the photoelectric conversion module 86 in the first optical module 12 can receive the second optical signal sent by the second optical module 22 through the second channel, and convert the received second optical signal into electric signal.
- the detecting module 87 in the first optical module 12 can determine whether the second optical signal is an optical signal indicating that the communication channel is in the EI state.
- the waveform of the electrical signal converted according to the second optical signal can be determined. Whether the waveform of the control signal indicating that the communication channel is in the EI state is the same or not is used to determine whether the second optical signal is an optical signal indicating that the communication channel is in the EI state. If the detecting module 87 in the first optical module 12 determines that the second optical signal is an optical signal indicating that the communication channel is in the EI state, the electrical signal driving module 88 in the first optical module 12 can suppress passing through the second channel.
- a differential mode voltage of the electrical signal sent to the receiving end of the first PCIe chip 14 the differential mode voltage of the suppressed electrical signal is lower than the second threshold, and sent to the first PCIe chip 14
- the suppressed electrical signal is such that the differential mode voltage of the electrical signal received by the first PCIe chip 14 is lower than 175 mV, so that the first PCIe chip 14 can be suppressed when the second channel of the transmitting end is in the EI state.
- the second channel receives the abnormal signal, so that the first PCIe chip 14 determines that the second channel is still in the EI state, and keeps the link states at both ends of the second channel consistent.
- the photoelectric conversion module 86, the detecting module 87 and the electrical signal driving module 88 in the first optical module 12 can refer to the second optical module 22 in the above embodiment. Description of the photoelectric conversion module 86, the detection module 87, and the electrical signal driving module 88 in the second optical module 22 as the receiving end optical module. I will not repeat them here. It will be apparent to those skilled in the art that the techniques in the embodiments of the present invention can be implemented by means of software plus a necessary general hardware platform.
- the technical solution in the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product, which may be stored in a storage medium such as a ROM/RAM. , a diskette, an optical disk, etc., comprising instructions for causing a computer device (which may be a personal computer, server, or network device;) to perform the methods described in various embodiments of the present invention or in certain portions of the embodiments.
- a computer device which may be a personal computer, server, or network device;
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AU2013391863A AU2013391863B2 (en) | 2013-06-03 | 2013-10-12 | Method, apparatus, and communication node for supressing output noise of PCIE optical fiber communication |
EP13886352.7A EP2863555A4 (en) | 2013-06-03 | 2013-10-12 | METHOD AND DEVICE FOR SUPPRESSING PCIE NOISE IN GLASS FIBER COMMUNICATION AND COMMUNICATION NODES |
KR1020157002752A KR101647336B1 (ko) | 2013-06-03 | 2013-10-12 | 광섬유 통신에서 잡음 출력을 억제하는 방법 및 장치, 및 통신 노드 |
JP2015526873A JP6175709B2 (ja) | 2013-06-03 | 2013-10-12 | PCIe光ファイバ通信の出力ノイズを抑制するための方法、装置、および通信ノード |
CN201380001816.XA CN103688478B (zh) | 2013-06-03 | 2013-10-12 | 抑制PCIe走光纤通信输出噪声的方法、装置及通信节点 |
US14/957,621 US9735871B2 (en) | 2013-06-03 | 2015-12-03 | Method, apparatus, and communication node for suppressing output noise of PCIe devices in optical fiber communication |
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PCT/CN2013/076648 WO2014194459A1 (zh) | 2013-06-03 | 2013-06-03 | 抑制PCIe走光纤通信输出噪声的方法、装置及通信节点 |
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CN112713938A (zh) * | 2020-12-15 | 2021-04-27 | 锐捷网络股份有限公司 | 光模块控制方法、装置和设备 |
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CN113364524B (zh) * | 2020-03-06 | 2022-06-28 | 青岛海信宽带多媒体技术有限公司 | 一种数据接收方法及光模块 |
CN111817781B (zh) * | 2020-06-18 | 2022-07-15 | 武汉光迅科技股份有限公司 | 一种光功率监测电路和方法 |
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CN117254860B (zh) * | 2023-11-17 | 2024-02-20 | 苏州元脑智能科技有限公司 | 信号发送方法及装置、存储介质、电子设备 |
CN117879711A (zh) * | 2024-03-11 | 2024-04-12 | 浪潮计算机科技有限公司 | 光互联链路的噪声处理方法、系统、设备、装置及介质 |
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US9735871B2 (en) | 2017-08-15 |
AU2013391863B2 (en) | 2016-07-07 |
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US20160087723A1 (en) | 2016-03-24 |
EP2863555A4 (en) | 2016-03-09 |
EP2863555A1 (en) | 2015-04-22 |
AU2013391863A1 (en) | 2015-02-05 |
JP6175709B2 (ja) | 2017-08-09 |
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KR20150036327A (ko) | 2015-04-07 |
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