WO2019080546A1 - 一种调整参数的方法及参数调整装置 - Google Patents

一种调整参数的方法及参数调整装置

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Publication number
WO2019080546A1
WO2019080546A1 PCT/CN2018/095537 CN2018095537W WO2019080546A1 WO 2019080546 A1 WO2019080546 A1 WO 2019080546A1 CN 2018095537 W CN2018095537 W CN 2018095537W WO 2019080546 A1 WO2019080546 A1 WO 2019080546A1
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WO
WIPO (PCT)
Prior art keywords
network device
frame gap
value
group
data frames
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PCT/CN2018/095537
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English (en)
French (fr)
Inventor
臧博
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2019080546A1 publication Critical patent/WO2019080546A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects

Definitions

  • the present invention relates to the field of communications, and in particular, to a method for adjusting parameters and a parameter adjusting device.
  • Optical fiber communication is a communication method that uses optical fibers to transmit signals for information transmission.
  • Optical fiber communication has the advantages of high bandwidth, small signal attenuation, light weight, and low cost.
  • Optical fiber communication has been widely used in access devices and aggregation devices.
  • the port After the network device is connected through the medium, a series of capability negotiation and sub-parameters are performed before the port is up. After the two configurations are completed, the port is UP. After the port is up, the channel generally transmits service packets. The device will no longer have interaction on the control signal.
  • you want to control the port of a device such as adjusting the sending parameters and modifying the transmitting optical power of the optical module, you can implement similar control signals by manually intervening and executing related commands on the corresponding boards.
  • the data packet is generally transmitted only through the medium.
  • the user is notified through the management plane, which increases the maintenance cost and reduces the communication efficiency.
  • the present invention provides a method for adjusting parameters and a parameter adjustment device.
  • the method uses the frame gap in the communication message to configure the command, reduces the upper layer network management software and manual intervention, and has low operation and maintenance cost, and completes the intelligence between the devices. And efficient management.
  • the application provides a method for adjusting parameters, the method comprising:
  • the first network device determines that the communication parameter of the second network device needs to be adjusted, the first network device sends a second group of data frames to the second network device according to a preset frame gap value, where the The frame gap value is used to indicate that the second network device adjusts the corresponding communication parameter according to the preset frame gap value.
  • the method for adjusting parameters is provided by the method, which uses the frame gap in the communication message to configure the command, reduces the upper layer network management software and manual intervention, and has low operation and maintenance cost, and completes intelligent and efficient management among network devices. .
  • the method before the first network device determines that the communication parameters of the second network device need to be adjusted, the method further includes:
  • the first network device determines, according to the received error rate of the first group of data frames, whether the pre-emphasis parameter of the second network device needs to be adjusted; the communication parameter includes a pre-emphasis parameter;
  • the first network device determines that the pre-emphasis parameter of the second network device needs to be adjusted.
  • the determining, by the first network device, that the pre-emphasis parameter of the second network device needs to be adjusted includes:
  • the device increases the main tap of the second network device, and the fourth value is used to instruct the second network device to reduce the main tap of the second network device.
  • the method further includes:
  • the first network device determines, according to the received optical power of the first group of data frames, whether the transmit optical power of the second network device needs to be adjusted; the communication parameter includes a transmit optical power;
  • the first network device determines that the transmit optical power of the second network device needs to be adjusted, and Determining that the preset frame gap data is a first value, where the first value is used to indicate that the second network device reduces the transmit optical power;
  • the first network device determines that the transmit optical power of the second network device needs to be adjusted, and Determining that the preset frame gap data is a second value, where the second value is used to indicate that the second network device increases the transmit optical power.
  • the present application provides a method for adjusting parameters, the method comprising:
  • the first network device detects a frame gap of the first group of data frames
  • the first network device adjusts the communication parameter of the first network device according to the preset frame gap data.
  • the preset condition includes:
  • the preset frame gap value is consecutive times.
  • the method further includes:
  • the first network device After the first network device and the second network device establish a connection, the first network device sends a second group of data frames to the second network device according to a preset frame gap negotiation value, so as to be Whether the network device negotiates whether to support the frame gap parameter adjustment function;
  • the second group of data frames or the third group of data frames includes a correspondence between communication parameters and frame gap values.
  • the present application provides a parameter adjustment apparatus, where the parameter adjustment apparatus is used in a first network device, and the parameter adjustment apparatus includes:
  • a receiving module configured to receive a first group of data frames sent by the second network device
  • a determining module configured to determine whether it is necessary to adjust communication parameters of the second network device
  • a sending module configured to: when the determining module determines that the communication parameter of the second network device needs to be adjusted, send a second group of data frames to the second network device according to a preset frame gap value, where the preset frame gap is The value is used to instruct the second network device to adjust the corresponding communication parameter according to the preset frame gap value.
  • the determining module is specifically configured to:
  • the communication parameter includes a pre-emphasis parameter
  • the pre-emphasis parameter of the second network device When the error rate is greater than the preset error rate threshold, determining that the pre-emphasis parameter of the second network device needs to be adjusted, and determining that the preset frame gap value is a third value or a fourth value, the third value a pre-emphasis parameter for instructing the second network device to increase the second network device, where the fourth value is used to instruct the second network device to reduce a pre-emphasis parameter of the second network device;
  • the pre-emphasis parameter includes any one or more of the following:
  • the determining module is specifically configured to:
  • the communication parameter includes a transmit optical power
  • the receiving module determines, by the receiving module, that the received optical power of the first group of data frames is not less than a preset received optical power upper limit, determining that the transmit optical power of the second network device needs to be adjusted, and determining the preset frame gap data. a second value, the second value is used to indicate that the second network device reduces the transmit optical power;
  • the receiving module When the receiving module receives the received optical power of the first group of data frames is not greater than the preset received optical power lower limit, determining that the transmit optical power of the second network device needs to be adjusted, and determining the preset frame gap data The second value is used to indicate that the second network device increases the transmit optical power.
  • the negotiation module is further included;
  • the negotiation module is configured to send, after the first network device and the second network device establish a connection, a third group of data frames to the second network device according to a preset frame gap negotiation value, so as to Whether the second network device negotiates whether to support the frame gap parameter adjustment function;
  • the receiving module is further configured to receive a fourth group of data frames that are sent by the second network device according to a preset frame gap response value
  • the third group of data frames or the fourth group of data frames includes a correspondence between communication parameters and frame gap values.
  • the detection module and the adjustment module are further included;
  • the receiving module is further configured to receive a fifth group of data frames sent by the second network device;
  • the detecting module is configured to detect a frame gap of the fifth group of data frames
  • the adjusting module is configured to: when the number of bits of the frame gap of the fifth group of data frames detected by the detecting module is the preset frame gap value and meets a preset condition, according to the preset frame gap
  • the data adjusts communication parameters of the first network device.
  • the present application provides a parameter adjustment apparatus, where the parameter adjustment apparatus is used in a first network device, where the parameter adjustment apparatus includes: a transceiver and a processor;
  • a transceiver configured to receive a first group of data frames sent by the second network device
  • a processor configured to determine whether a communication parameter of the second network device needs to be adjusted
  • a transceiver configured to send, according to a preset frame gap value, a second set of data frames to the second network device, where the processor determines that the communication parameter of the second network device needs to be adjusted, the preset frame gap The value is used to instruct the second network device to adjust the corresponding communication parameter according to the preset frame gap value.
  • the present application provides a computer readable storage medium storing a program, the program comprising instructions for performing the above described first aspect or any one of the possible designs of the first aspect method.
  • the present application provides a computer readable storage medium storing a program, the program comprising instructions for performing the method described in any one of the above second aspect or the second aspect method.
  • the application provides a computer program, the program comprising instructions for performing the method of any of the above-described first aspect or any one of the possible aspects of the first aspect.
  • the present application provides a computer program, the program comprising instructions for performing the method described in any one of the possible aspects of the second aspect or the second aspect above.
  • FIG. 1 is a schematic structural diagram of a physical layer device in an optical module according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for adjusting parameters according to an embodiment of the present invention
  • FIG. 3 is a flowchart of another method for adjusting parameters according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a function of supporting a frame gap parameter adjustment between network devices according to an embodiment of the present invention
  • FIG. 5 is a flowchart of adjusting transmit optical power according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of adjusting a bit error rate according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a method for adjusting parameters according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a parameter adjustment apparatus according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a parameter adjustment apparatus according to an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of a physical layer device in an optical module according to an embodiment of the present invention.
  • the physical layer device (PHY) device includes, in order from bottom to top, a Physical Medium Dependent (PMD) 103, a Physical Medium Attachment (PMA) 102, and physical coding. Physical Coding Sublayer (PCS) 101.
  • the first network device and the second network device connect the PMD (Physical Medium Dependent, PMD) layer 103 of the two devices through a medium, and convert and convert through a Physical Medium Attachment (PMA) 102 string.
  • PMD Physical Medium Dependent
  • PMA Physical Medium Attachment
  • a frame gap involved in a specific embodiment of the present invention refers to a duration between two adjacent frames of Ethernet.
  • the frame gap contains a different number of bits, and the duration between the two frames is different. The larger the number of bits, the larger the duration between two frames; the smaller the number of bits, the smaller the duration between two frames.
  • the embodiment of the invention provides a method for adjusting parameters, which uses the frame gap in the communication message to configure the command, reduces the upper layer network management software and manual intervention, and has low operation and maintenance cost, and completes intelligent and efficient network equipment. management.
  • Communication parameters include pre-emphasis parameters, transmitted optical power, and the like.
  • the pre-emphasis parameters include the main tap (Main), the left tap (Pre), and the right tap (Post).
  • FIG. 2 is a flowchart of a method for adjusting parameters according to an embodiment of the present invention. As shown in FIG. 2, the method includes:
  • the first network device receives a first group of data frames sent by the second network device.
  • the first network device After the first network device and the second network device establish a connection, the first network device receives the first group of data frames sent by the second network device, and finds that the communication quality is not according to the first group of data frames. Preferably, the communication parameters need to be adjusted, and then step S202 is continued.
  • the first network device determines that the communication parameter of the second network device needs to be adjusted, the first network device sends a second group of data frames to the second network device according to a preset frame gap value.
  • the preset frame gap value is used to indicate that the second network device adjusts the corresponding communication parameter according to the preset frame gap value.
  • the method further includes:
  • the first network device determines, according to the received error rate of the first group of data frames, whether the pre-emphasis parameter of the second network device needs to be adjusted; the communication parameter includes a pre-emphasis parameter;
  • the first network device determines that the pre-emphasis parameter of the second network device needs to be adjusted.
  • the pre-emphasis parameter includes a main tap
  • Determining, by the first network device, that the pre-emphasis parameters of the second network device need to be adjusted includes:
  • the device increases the main tap of the second network device, and the fourth value is used to instruct the second network device to reduce the main tap of the second network device.
  • the pre-emphasis parameter further includes a left tap, or a right tap.
  • the preset frame gap value is a fifth value or a sixth value, where the fifth value is used to indicate the second network
  • the device increases the left tap of the second network device, and the sixth value is used to instruct the second network device to reduce the left tap of the second network device;
  • the device increases the right tap of the second network device, and the eighth value is used to instruct the second network device to reduce the right tap of the second network device.
  • the method may further include:
  • the first network device determines, according to the received optical power of the first group of data frames, whether the transmit optical power of the second network device needs to be adjusted; the communication parameter includes a transmit optical power;
  • the first network device determines that the transmit optical power of the second network device needs to be adjusted, and Determining that the preset frame gap data is a first value, where the first value is used to indicate that the second network device reduces the transmit optical power;
  • the first network device determines that the transmit optical power of the second network device needs to be adjusted, and Determining that the preset frame gap data is a second value, where the second value is used to indicate that the second network device increases the transmit optical power.
  • the frame gap between data frames when the first network device or the second network device communicates normally is a default frame gap, for example, a commonly used 96 bit.
  • a default frame gap is adopted between the first group of data frames sent by the second network device.
  • the data frame is sent according to the preset frame gap value to inform the peer network device to implement the function.
  • the second network device sends a second group of data frames according to the preset frame gap value, and instructs the second network device to adjust the communication parameter corresponding to the preset frame gap value.
  • the first network device also synchronously adjusts a communication parameter corresponding to the preset frame gap value.
  • FIG. 3 is a flowchart of another method for adjusting parameters according to an embodiment of the present invention. As shown in FIG. 3, the method includes:
  • the second network device receives the second group of data frames sent by the first network device.
  • the second network device detects a frame gap of the second group of data frames.
  • the second network device adjusts the second according to the preset frame gap data. Communication parameters of the network device.
  • the preset condition of step S205 includes: the number of bits of the frame gap is one or more times of the preset frame gap value; or the number of bits of the frame gap is the preset frame gap value consecutively.
  • the second network device adjusts the communication parameter corresponding to the preset frame gap value as long as the number of bits of the frame gap is once the preset frame gap value.
  • the preset condition may be determined by self-negotiation between the first network device and the second network device. The preset condition may also be determined by the second network device and optionally reported to the first network device.
  • the first network device may send the second group of data frames according to the preset frame gap value according to a preset sending rule.
  • the preset sending rule may be the same as the preset condition.
  • the preset sending rule may also be different from the preset condition. Specifically, the first network device needs to ensure that the frame gap of the second group of data frames received by the second network device meets the pre- It is assumed that the number of times in the preset sending rule may be set more than the number of times in the preset condition.
  • the method further includes: after the first network device and the second network device establish a connection, the first network device sends the value to the second network device according to a preset frame gap negotiation value. a second set of data frames to negotiate with the second network device whether to support a frame gap parameter adjustment function;
  • the second group of data frames or the third group of data frames includes a correspondence between communication parameters and frame gap values.
  • FIG. 4 is a flowchart of a function of adjusting a frame gap parameter between network devices according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:
  • S402 The local network device and the peer network device send the data frame three times in succession according to a preset frame gap negotiation value (for example, 128 bits);
  • the PCS layer of the PHY device detects the frame gap.
  • the peer network device If the peer network device supports the frame gap parameter adjustment function, and the frame gap includes the preset frame gap negotiation value (128 bits), the peer network device responds to the data according to a preset frame gap response value (for example, 120 bits).
  • a preset frame gap response value for example, 120 bits.
  • the frame is sent to the local network device, and the local network device supports the frame gap parameter adjustment function.
  • the process is processed according to a normal data frame process. Specifically, the peer network device does not follow the preset frame gap response value, but sends a data frame according to the default frame gap to communicate with the local network device.
  • the local network device and the peer network device may be set to be discontinuous three times in succession.
  • the local network device sends the data frame according to the frame gap value of 128 bits, 96 bits, 128 bits, 96 bits, and 128 bits.
  • FIG. 5 is a flowchart of adjusting transmit optical power according to an embodiment of the present invention.
  • the transmission optical power of the peer network device is adjusted as an example.
  • the local network device determines that its receiving optical power is too large, the local network device and the peer network device send a set of data frames according to a preset frame gap negotiation value (for example, 112 bits) for three consecutive times, wherein the preset frame gap is preset.
  • the negotiated value is adjustable. Since one byte is 8 bits, the preset frame gap negotiation value is generally set to a multiple of 8 bits. It is notified that the peer network device needs to adjust the transmit optical power; and the peer network device feels that data packets of a plurality of frame durations of a specific duration are continuously controlled to implement mutual communication.
  • the following steps are used to adjust the optical power of the peer network device (the local network device and the peer network device can be triggered at the same time).
  • S501 The local network device and the peer network device establish a self-negotiating communication; the local network device and the peer network device send the first group of data frames;
  • S502 The local network device and the peer network device determine whether the optical power received by the network device deviates, for example, the signal requirement is met by -10 dB, and the current received optical power is -3 dB, and an adjustment command is initiated; if the local network device and The peer network device determines that its received optical power does not deviate, and the process ends;
  • S503 The local network device and the peer network device send the second group of data frames according to the preset frame gap negotiation value (for example, 112 bits), and the preset frame gap value is used to indicate that the peer network device is in accordance with the Determining a preset frame gap value to adjust a corresponding communication parameter;
  • the preset frame gap negotiation value for example, 112 bits
  • the local network device determines, for three consecutive times, whether the frame gap of the second group of data frames sent by the peer network device is within a preset frame gap value (for example, the frame gap value is greater than 110 bits).
  • a preset frame gap value for example, the frame gap value is greater than 110 bits.
  • the purpose of determining whether the second group of data frame data frames sent by the peer network device is within a preset frame gap value is to improve the reliability of the frame gap detection of the data frame;
  • the local network device determines that the frame gap of the second group of data frames sent by the peer network device is within a preset value (for example, the frame gap value is greater than 110 bits), that is, the peer network device is required to reduce the transmit optical power. To adjust the drive current.
  • a preset value for example, the frame gap value is greater than 110 bits
  • the method for communicating between network devices is provided by the embodiment of the present invention.
  • the underlying communication between the two network devices is realized, and the peer network device is controlled to achieve the optimization and improvement of performance and power consumption.
  • the sending parameters of the two devices will not change. However, as the external environment changes, the parameters negotiated between the two network devices may not be able to adapt to the new environment. Temperature, under severe conditions, may cause link communication to be interrupted.
  • FIG. 6 is an ideal step curve and an attenuated waveform provided by an embodiment of the present invention.
  • the electrical signal sent by the local network device or the peer network device is an ideal step response, and after the attenuation of the signal link, the signal is deformed into a single step corresponding to that shown in FIG. There will be inter-symbol interference between two consecutive signals. This requires adjusting the parameters of the main tap, left tap and right tap in the parameters to achieve the purpose of suppressing interference and optimizing the link signal.
  • FIG. 7 is a flowchart of adjusting error rate according to an embodiment of the present invention. As shown in Figure 7, it includes:
  • S701 The local network device and the peer network device establish a connection through negotiation, and the local network device and the peer network device send a set of data frames.
  • S702. Determine whether the error rate of the receiving end of the receiving end is increased, and when the error rate of the receiving end increases, if there is a risk of packet loss, start the parameterizing process, otherwise the process ends.
  • S703 The local network device and the peer network device send the first group of data frames according to the preset frame gap negotiation value, where the preset frame gap value is used to indicate that the peer network device follows the preset frame gap value.
  • the preset frame gap negotiation value is adjusted to 104 bits, or when the communication parameters need to be reduced, the preset frame gap negotiation value may be adjusted to 80 bits;
  • the peer network device determines, for three consecutive times, whether the frame gap value of the data frame is greater than a preset frame gap value lower limit or less than a preset frame gap value upper limit (for example, a frame gap value is greater than 100 bits or less than 88 bits), and does not respond to three consecutive times. Determining that the frame gap value of the data frame of the group is greater than a lower limit of the preset frame gap value or less than an upper limit of the preset frame gap value (for example, greater than 100 bits or less than 88 bits), ending the process;
  • the peer network device determines, for three consecutive times, that the frame gap value of the group of data frames is greater than a lower limit of the preset frame gap value or less than a preset value of the preset frame gap value (for example, the frame gap value is greater than 100 bits or less than 88 bits), and the transmission parameter of the group is adjusted.
  • Tap for example, adding 1 or minus 1 to the main tap of the send parameter
  • S706 The local network device and the peer network device send a second group of data frames to determine whether the bit error rate is decreased. If the bit error rate decreases, the process ends. If the bit error rate is not decreased, the transmit parameter main tap value is continuously adjusted, step S703. S704, S705, and S706 can be repeated up to three times.
  • the S711, the local network device, and the peer network device send the first group of data frames according to the preset frame gap negotiation value, where the preset frame gap value is used to indicate that the peer network device follows the preset frame gap value. Adjust the corresponding communication parameters. When you need to increase the parameter, you can adjust the preset frame gap negotiation value to 104bit, or you can adjust the preset frame gap negotiation value to 80bit when you need to reduce the parameter.
  • the peer network device determines, for three consecutive times, whether the frame gap value of the group of data frames is greater than a lower limit of the preset frame gap value or less than a preset value of the preset frame gap value (for example, the frame gap value is greater than 100 bits or less than 88 bits), and the group is judged three times in succession.
  • the number of data frame frame gap bits is not greater than the lower limit of the preset frame gap value or less than the upper limit of the preset frame gap value (greater than 100 bits or less than 88 bits), and the process ends;
  • S713 determining, in three consecutive times, that the number of frame gaps of the data frame is greater than a lower limit of the preset frame gap value or less than a preset value of the preset frame gap value, and the peer network device adjusts the right tap value of the sending parameter of the peer network (for example, adding the right tap value of the sending parameter) 1 or minus 1);
  • step S714 the local network device and the peer network device set a data frame, determine whether the error rate is reduced, respond to the error rate reduction, end, and not respond to the error rate reduction, continue to adjust the transmission parameter right tap value, step S711 S712, S713, and S714 can be repeated up to three times.
  • the S721, the local network device, and the peer network device send the first group of data frames according to the preset frame gap negotiation value, where the preset frame gap value is used to indicate that the peer network device follows the preset frame gap value. Adjust the corresponding communication parameters. When the parameter needs to be increased, the preset frame gap negotiation value is adjusted to 104 bits, or when the parameter needs to be reduced, the preset frame gap negotiation value is reduced to 80 bits;
  • the frame gap value of the data frame is greater than a lower limit of the preset frame gap value or less than a preset value of the preset frame gap value (for example, the frame gap value is greater than 100 bits or less than 88 bits), and the group of data frames is not determined in response to three consecutive times.
  • the frame gap value is greater than the lower limit of the preset frame gap value or less than the upper limit of the preset frame gap value (for example, greater than 100 bits or less than 88 bits), and the process ends;
  • the peer network device determines, according to three consecutive times, that the frame gap value of the group of data frames is greater than a lower limit of a preset frame gap value or less than a preset value of a preset frame gap value (for example, a frame gap value greater than 100 bits or less than 88 bits), and adjusting the sending of the data frame.
  • Parameter right tap value for example, adding 1 or minus 1 to the right tap value of the send parameter
  • S724 The local network device and the peer network device send the second group of data frames according to the preset frame gap negotiation value, and the peer network device determines whether the error rate of the group of data frames is reduced, and if the error rate of the group of data frames is reduced. Small, end, and the transmission parameter right tap value is not adjusted in response to the reduction of the bit error rate of the data frame, and steps S721, S722, S723, and S724 may be repeated three times.
  • the frame gap length is adjusted, and the three main pre-emphasis parameters of the main tap, the left tap, and the right tap are adjusted successively; the transmission, pre-emphasis, and reception equalization parameters between the devices can be dynamically adjusted. To ensure the reliability of link communication.
  • FIG. 8 is a schematic structural diagram of a communication system according to an embodiment of the present invention. As shown in FIG. 8, the system includes a first network device 801 and a second network device 802, and the first network device and the second network device can instruct each other to adjust communication parameters by adjusting a frame gap.
  • FIG. 9 is a schematic structural diagram of a parameter adjustment apparatus according to an embodiment of the present invention.
  • the parameter adjustment device 900 can be used in the first network device 801 in the communication system shown in FIG. As shown in FIG. 9 , the parameter adjustment apparatus 900 includes a receiving module 901 , a determining module 902 , and a sending module 903 .
  • the receiving module 901 is configured to receive a first group of data frames sent by the second network device.
  • the determining module 902 is configured to determine whether the communication parameter of the second network device needs to be adjusted
  • the sending module 903 is configured to: when the determining module determines that the communication parameter of the second network device needs to be adjusted, send a second group of data frames to the second network device according to a preset frame gap value, where the preset The frame gap value is used to indicate that the second network device adjusts the corresponding communication parameter according to the preset frame gap value.
  • the determining module 902 is specifically configured to:
  • the communication parameter includes a pre-emphasis parameter
  • the pre-emphasis parameter of the second network device When the error rate is greater than the preset error rate threshold, determining that the pre-emphasis parameter of the second network device needs to be adjusted, and determining that the preset frame gap value is a third value or a fourth value, the third value a pre-emphasis parameter for instructing the second network device to increase the second network device, where the fourth value is used to instruct the second network device to reduce a pre-emphasis parameter of the second network device;
  • the pre-emphasis parameter includes any one or more of the following: a main tap; a left tap; a right tap.
  • the determining module 902 is specifically configured to determine, according to the received optical power of the first group of data frames, whether to adjust the transmit optical power of the second network device, where the communication parameter includes the transmit optical power;
  • the receiving module determines, by the receiving module, that the received optical power of the first group of data frames is not less than a preset received optical power upper limit, determining that the transmit optical power of the second network device needs to be adjusted, and determining the preset frame gap data. a second value, the second value is used to indicate that the second network device reduces the transmit optical power;
  • the receiving module When the receiving module receives the received optical power of the first group of data frames is not greater than the preset received optical power lower limit, determining that the transmit optical power of the second network device needs to be adjusted, and determining the preset frame gap data The second value is used to indicate that the second network device increases the transmit optical power.
  • the parameter adjustment device 900 also includes a negotiation module.
  • the negotiation module is configured to send, after the first network device and the second network device establish a connection, a third group of data frames to the second network device according to a preset frame gap negotiation value, so as to be Whether the second network device negotiates whether to support the frame gap parameter adjustment function;
  • the receiving module is further configured to receive a fourth group of data frames that are sent by the second network device according to a preset frame gap response value
  • the third group of data frames or the fourth group of data frames includes a correspondence between communication parameters and frame gap values.
  • the parameter adjustment device 900 further includes a detection module and an adjustment module.
  • the receiving module is further configured to receive a fifth group of data frames sent by the second network device.
  • the detecting module is configured to detect a frame gap of the fifth group of data frames.
  • the adjusting module is configured to: when the number of bits of the frame gap of the fifth group of data frames detected by the detecting module is the preset frame gap value and meets a preset condition, according to the preset frame gap data Adjusting communication parameters of the first network device.
  • FIG. 10 is another schematic structural diagram of a parameter adjustment apparatus according to an embodiment of the present invention.
  • the parameter adjustment apparatus 1000 includes a processor 1001, a PHY device 1002, a memory 1003, and a communication port 1004.
  • the processor 1001, the PHY device 1002, the memory 1003, and the communication port 1004 are connected to each other through a bus.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 10, but it does not mean that there is only one bus or one type of bus.
  • the memory 1003 may include a volatile memory (English: volatile memory), such as a random access memory (English: random-access memory, abbreviation: RAM); the memory may also include a non-volatile memory (English: non-volatile memory) For example, flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviated: HDD) or solid state drive (English: solid-state drive, abbreviation: SSD); the memory 1003 may also include the above types of memory combination.
  • a volatile memory English: volatile memory
  • RAM random access memory
  • non-volatile memory English: non-volatile memory
  • flash memory English: flash memory
  • hard disk English: hard disk drive, abbreviated: HDD
  • SSD solid state drive
  • the memory 1003 is configured to store a correspondence between a communication parameter and a frame gap value.
  • the memory 1003 is further configured to store the preset sending rule, data frame, and the like.
  • the processor 1001 may be a central processing unit (English: central processing unit, abbreviated: CPU), a network processor (English: network processor, abbreviation: NP) or a combination of a CPU and an NP.
  • the processor 1001 may further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (abbreviated as PLD), or a combination thereof.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the above PLD can be a complex programmable logic device (English: complex programmable logic device, abbreviation: CPLD), field-programmable gate array (English: field-programmable gate array, abbreviation: FPGA), general array logic (English: generic array Logic, abbreviation: GAL) or any combination thereof.
  • the memory 1003 can also be used to store program instructions, and the processor 1001 can call the program instructions stored in the memory 1003, and can perform one or more steps in the methods shown in FIG. 2-7, or an optional implementation thereof.
  • the parameter adjustment device implements the function of the first network device in the foregoing method.
  • the method for adjusting parameters provided by the embodiments of the present invention can be used for optical module communication, and can also be used for communication between network devices connected by mediums such as copper cables and twisted pairs.
  • mediums such as copper cables and twisted pairs.
  • optical module communication not only the pre-emphasis parameters but also the optical power can be adjusted.
  • the steps of a method or algorithm described in connection with the embodiments disclosed herein may be implemented in hardware, a software module executed by a processor module, or a combination of both.
  • the software module can be placed in random access memory (RAM), memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technical field. Any other form of storage medium known.

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Abstract

本发明提供一种调整参数的方法及参数调整装置,所述方法包括：第一网络设备接收第二网络设备发送的第一组数据帧；当所述第一网络设备确定所述第二网络设备的通信参数需要调整时，所述第一网络设备按照预设帧间隙数值向所述第二网络设备发送第二组数据帧，所述预设帧间隙数值用于指示所述第二网络设备按照所述预设帧间隙数值调整对应的通信参数。本发明通过调整通信协议中帧间隙，作为调整双方网络设备的控制命令的判断条件，达到设备间通信的功能。

Description

一种调整参数的方法及参数调整装置 技术领域
本发明涉及通信领域，尤其是涉及一种调整参数的方法及参数调整装置。
背景技术
光纤通信是利用光导纤维传输信号，以实现信息传递的一种通信方式。光纤通信具有带宽高、信号衰减小、重量轻、成本低等优点。光纤通信已广泛应用于接入设备和汇聚设备。
当网络设备通过介质连接后，在端口UP之前，会做一系列的能力协商、下参数等操作，双方配置完成后，端口UP；而端口在UP之后，此通道一般传输业务报文，双方网络设备不会再有控制信号上的交互。在想控制某个设备的端口时，比如调整发送参数、修改光模块的发送光功率，要通过人工干预，在对应的单板上执行相关命令，才能实现类似的控制信号。
当前的数据通信，网络设备在建立链接后，一般只通过介质传输数据报文，需要用户去操作的时候，要通过管理平面告知用户，这样既增加维护成本，又降低通信效率。
发明内容
本申请提供了一种调整参数的方法及参数调整装置，该方法通过使用检测通信报文中的帧间隙来进行命令的配置，减少上层网管软件及人工干预，运维成本低，完成设备间智能、高效管理。
第一方面，本申请提供了一种调整参数的方法，所述方法包括:
第一网络设备接收第二网络设备发送的第一组数据帧；
当所述第一网络设备确定所述第二网络设备的通信参数需要调整时，所述第一网络设备按照预设帧间隙数值向所述第二网络设备发送第二组数据帧，所述预设帧间隙数值用于指示所述第二网络设备按照所述预设帧间隙数值调整对应的通信参数。
本申请提供的一种调整参数的方法，该方法通过使用检测通信报文中的帧间隙来进行命令的配置，减少上层网管软件及人工干预，运维成本低，完成网络设备间智能、高效管理。
结合第一方面，在第一种可能的实现方式中，在所述第一网络设备确定所述第二网络设备的通信参数需要调整之前，所述方法还包括：
所述第一网络设备根据接收到的所述第一组数据帧的误码率，判断是否需要调整所述第二网络设备的预加重参数；所述通信参数包括预加重参数；
当误码率大于预设误码率阈值时，所述第一网络设备确定需要调整所述第二网络设备的预加重参数。
结合第一方面的第一种可能的实现方式，在第二种可能的实现方式中，所述第一网络设备确定需要调整所述第二网络设备的预加重参数包括：
所述第一网络设备确定需要调整所述第二网络设备的主抽头，并确定所述预设帧间隙数值为第三数值或第四数值，所述第三数值用于指示所述第二网络设备调大所述第二网络设备的主抽头，所述第四数值用于指示所述第二网络设备调小所述第二网络设备的主抽头。
结合第一方面或第一方面的任意一种可能的实现方式，在第三种可能的实现方式中，
在所述第一网络设备确定所述第二网络设备的通信参数需要调整之前，所述方法还包括：
所述第一网络设备根据接收所述第一组数据帧的接收光功率，判断是否需要调整所述第二网络设备的发送光功率；所述通信参数包括发送光功率；
当所述第一网络设备接收所述第一组数据帧的接收光功率不小于预设接收光功率上限时，所述第一网络设备确定需要调整所述第二网络设备的发送光功率，并确定所述预设帧间隙数据为第一数值，所述第一数值用于指示所述第二网络设备调小发送光功率；
当所述第一网络设备接收所述第一组数据帧的接收光功率不大于预设接收光功率下限时，所述第一网络设备确定需要调整所述第二网络设备的发送光功率，并确定所述预设帧间隙数据为第二数值，所述第二数值用于指示所述第二网络设备调大发送光功率。
第二方面，本申请提供了一种调整参数的方法，所述方法包括:
第一网络设备接收第二网络设备发送的第一组数据帧；
所述第一网络设备检测所述第一组数据帧的帧间隙；
当所述帧间隙的比特数为预设帧间隙数值且满足预设条件时，所述第一网络设备根据所述预设帧间隙数据调整所述第一网络设备的通信参数。
结合第二方面，在第一种可能的实现方式中，所述预设条件包括：
一次或多次为所述预设帧间隙数值；
或者，连续多次为所述预设帧间隙数值。
结合第二方面或第二方面的第一种可能的实现方式，还包括：
所述第一网络设备和所述第二网络设备建立连接后，所述第一网络设备按照预设的帧间隙协商数值向所述第二网络设备发送第二组数据帧，以便与所述第二网络设备协商是否支持帧间隙参数调整功能；
所述第一网络设备接收所述第二网络设备按照预设的帧间隙应答数值发送的第三组数据帧，以便向所述第一网络设备确认支持帧间隙参数调整功能；
所述第二组数据帧或所述第三组数据帧中包括通信参数与帧间隙数值之间的对应关系。
第三方面，本申请提供了一种参数调整装置，所述参数调整装置用于第一网络设备中，所述参数调整装置包括：
接收模块，用于接收第二网络设备发送的第一组数据帧；
判断模块，用于判断是否需要调整所述第二网络设备的通信参数；
发送模块，用于在所述判断模块确定需要调整所述第二网络设备的通信参数时，按照预设帧间隙数值向所述第二网络设备发送第二组数据帧，所述预设帧间隙数值用于指示所述第二网络设备按照所述预设帧间隙数值调整对应的通信参数。
结合第三方面，在第一种可能的实现方式中，所述判断模块具体用于：
根据接收到的所述第一组数据帧的误码率，判断是否需要调整所述第二网络设备的预加重参数；所述通信参数包括预加重参数；
当误码率大于预设误码率阈值时，确定需要调整所述第二网络设备的预加重参数，并确定所述预设帧间隙数值为第三数值或第四数值，所述第三数值用于指示所述第二网络设 备调大所述第二网络设备的预加重参数，所述第四数值用于指示所述第二网络设备调小所述第二网络设备的预加重参数；
所述预加重参数包括如下任意一个或多个：
主抽头；
左抽头；
右抽头。
结合第三方面或第一种可能的实现方式，在第二种可能的实现方式中，所述判断模块具体用于：
根据接收所述第一组数据帧的接收光功率，判断是否需要调整所述第二网络设备的发送光功率；所述通信参数包括发送光功率；
当所述接收模块接收所述第一组数据帧的接收光功率不小于预设接收光功率上限时，确定需要调整所述第二网络设备的发送光功率，并确定所述预设帧间隙数据为第一数值，所述第二数值用于指示所述第二网络设备调小发送光功率；
当所述接收模块接收所述第一组数据帧的接收光功率不大于预设接收光功率下限时，确定需要调整所述第二网络设备的发送光功率，并确定所述预设帧间隙数据为第二数值，所述第二数值用于指示所述第二网络设备调大发送光功率。
结合第三方面、第一种或第二种任意可能的实现方式，在第三种可能的实现方式中，还包括协商模块；
所述协商模块，用于在所述第一网络设备和所述第二网络设备建立连接后，按照预设的帧间隙协商数值向所述第二网络设备发送第三组数据帧，以便与所述第二网络设备协商是否支持帧间隙参数调整功能；
所述接收模块还用于接收所述第二网络设备按照预设的帧间隙应答数值发送的第四组数据帧；
所述第三组数据帧或所述第四组数据帧中包括通信参数与帧间隙数值之间的对应关系。
结合第三方面或第三方面的任意可能的实现方式，在第三种可能的实现方式中，还包括检测模块和调整模块；
所述接收模块还用于接收第二网络设备发送的第五组数据帧；
所述检测模块，用于检测所述第五组数据帧的帧间隙；
所述调整模块，用于当所述检测模块检测到的所述第五组数据帧的帧间隙的比特数为所述预设帧间隙数值且满足预设条件时，根据所述预设帧间隙数据调整所述第一网络设备的通信参数。
第四方面，本申请提供了一种参数调整装置，所述参数调整装置用于第一网络设备中，所述参数调整装置包括：收发器以及处理器；
收发器，用于接收第二网络设备发送的第一组数据帧；
处理器，用于判断是否需要调整所述第二网络设备的通信参数；
收发器，用于在所述处理器确定需要调整所述第二网络设备的通信参数时，按照预设帧间隙数值向所述第二网络设备发送第二组数据帧，所述预设帧间隙数值用于指示所述第二网络设备按照所述预设帧间隙数值调整对应的通信参数。
第五方面，本申请提供了一种存储程序的计算机可读存储介质，所述程序包括指令，所述指令用于执行上述第一方面或第一方面的任意一种可能的设计中所述的方法。
第六方面，本申请提供了一种存储程序的计算机可读存储介质，所述程序包括指令，所述指令用于执行上述第二方面或第二方面的任意一种可能的设计中所述的方法。
第七方面，本申请提供了一种计算机程序，所述程序包括指令，所述指令用于执行上述第一方面或第一方面的任意一种可能的设计中所述的方法。
第八方面，本申请提供了一种计算机程序，所述程序包括指令，所述指令用于执行上述第二方面或第二方面的任意一种可能的设计中所述的方法。
附图说明
图1是本发明实施例提供的光模块中的物理层器件结构示意图；
图2是本发明实施例提供的一种调整参数的方法流程图；
图3是本发明实施例提供的另一种调整参数的方法流程图；
图4是本发明实施例提供的网络设备间支持帧间隙参数调整功能流程图；
图5是本发明实施例提供的调整发送光功率流程图；
图6是本发明实施例提供的理想的阶跃曲线及经过衰减后的波形；
图7是本发明实施例提供的调整误码率流程图；
图8是本发明实施例提供的调整参数的方法示意图；
图9是本发明实施例提供的参数调整装置的结构示意图；
图10是本发明实施例提供的参数调整装置的结构示意图。
具体实施方式
下面通过附图和实施例，对本发明的技术方案做进一步的详细描述。
图1是本发明实施例提供的光模块中的物理层器件结构示意图。如图1所示，物理层(Physical layer device，PHY)器件由下至上依次包括:物理介质相关层(Physical Medium Dependent，PMD)103、物理介质连接层(Physical Medium Attachment，PMA)102、物理编码层(Physical Coding Sublayer，PCS)101。在示例中，第一网络设备和第二网络设备通过介质将两个设备的PMD(Physical Medium Dependent，PMD)层103进行连接，经过物理介质连接层(Physical Medium Attachment，PMA)102串并转换，在物理编码层(Physical Coding Sublayer，PCS)101做解扰码之后，形成一个完整的数据帧格式；在PCS层101上，对帧间隙(interframe gap，IFG)做一个时间监控，用以后续的操作，这样第一网络设备和第二网络设备自协商(auto-negotiation)通信建立完成。本发明的具体实施方式涉及的帧间隙指的是以太网相邻两帧之间的时长。对于同样的通信速率，帧间隙包含的比特(bit)数不同，两帧之间的时长就不同。比特数越多，两帧之间的时长越大；比特数越少，两帧之间的时长越小。
本发明实施例提供一种调整参数的方法，该方法通过使用检测通信报文中的帧间隙 来进行命令的配置，减少上层网管软件及人工干预，运维成本低，完成网络设备间智能、高效管理。
本发明实施例描述中，“第一”、“第二”等词汇，仅用于区分描述，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。
本发明实施例描述中，“和/或”用于描述关联对象的关联关系，表示可以存在三种关系。例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本发明实施例中，不同通信参数,采用不同的帧间隙数值。通信参数包括预加重参数，发送光功率等。预加重参数包括主抽头(Main)、左抽头(Pre)、右抽头(Post)。下面描述的实施例仅仅作为一个示例，凡在本发明的原则之内，所做的任何改变，均应包含在本发明的保护范围之内。
图2是本发明实施例提供的一种调整参数的方法流程图。如图2所示，所述方法包括:
S201、第一网络设备接收第二网络设备发送的第一组数据帧；
所述第一网络设备和所述第二网络设备建立连接后，所述第一网络设备接收所述第二网络设备发送的第一组数据帧，根据所述第一组数据帧发现通信质量不好，需要调整通信参数，则继续步骤S202。
S202、当所述第一网络设备确定所述第二网络设备的通信参数需要调整时，所述第一网络设备按照预设帧间隙数值向所述第二网络设备发送第二组数据帧，所述预设帧间隙数值用于指示所述第二网络设备按照所述预设帧间隙数值调整对应的通信参数。
在示例中，在步骤S202之前，所述方法还包括：
所述第一网络设备根据接收到的所述第一组数据帧的误码率，判断是否需要调整所述第二网络设备的预加重参数；所述通信参数包括预加重参数；
当误码率大于预设误码率阈值时，所述第一网络设备确定需要调整所述第二网络设备的预加重参数。
在示例中，预加重参数包括主抽头；
所述第一网络设备确定需要调整所述第二网络设备的预加重参数包括：
所述第一网络设备确定需要调整所述第二网络设备的主抽头，并确定所述预设帧间隙数值为第三数值或第四数值，所述第三数值用于指示所述第二网络设备调大所述第二网络设备的主抽头，所述第四数值用于指示所述第二网络设备调小所述第二网络设备的主抽头。
进一步地，预加重参数还包括左抽头，或右抽头。所述第一网络设备在按照第三数值或第四数值向所述第二网络设备发送第二组数据帧，指示所述第二网络设备调整主抽头之后，所述方法还包括：
所述第一网络设备确定需要调整所述第二网络设备的左抽头，并确定所述预设帧间隙数值为第五数值或第六数值，所述第五数值用于指示所述第二网络设备调大所述第二网络设备的左抽头，所述第六数值用于指示所述第二网络设备调小所述第二网络设备的左抽头；
和/或，
所述第一网络设备确定需要调整所述第二网络设备的右抽头，并确定所述预设帧间隙数值为第七数值或第八数值，所述第七数值用于指示所述第二网络设备调大所述第二网络设备的右抽头，所述第八数值用于指示所述第二网络设备调小所述第二网络设备的右抽头。
可选地，若所述第一网络设备和所述第二网络设备之间采用光通信，则在步骤S202之前，所述方法还可以包括：
所述第一网络设备根据接收所述第一组数据帧的接收光功率，判断是否需要调整所述第二网络设备的发送光功率；所述通信参数包括发送光功率；
当所述第一网络设备接收所述第一组数据帧的接收光功率不小于预设接收光功率上限时，所述第一网络设备确定需要调整所述第二网络设备的发送光功率，并确定所述预设帧间隙数据为第一数值，所述第一数值用于指示所述第二网络设备调小发送光功率；
当所述第一网络设备接收所述第一组数据帧的接收光功率不大于预设接收光功率下限时，所述第一网络设备确定需要调整所述第二网络设备的发送光功率，并确定所述预设帧间隙数据为第二数值，所述第二数值用于指示所述第二网络设备调大发送光功率。
本发明实施例中，第一网络设备或第二网络设备正常通信时数据帧之间的帧间隙为默认帧间隙，例如常用的96bit。例如步骤S201中，所述第二网络设备发送的第一组数据帧之间就采用默认帧间隙。当需要调整对端的某个通信参数时，按照预设帧间隙数值发送数据帧来告知对端网络设备实现此功能。例如步骤S202中，所述第二网络设备按照预设帧间隙数值发送第二组数据帧，指示所述第二网络设备调整所述预设帧间隙数值对应的通信参数。
可选地，所述第一网络设备也同步调整所述预设帧间隙数值对应的通信参数。
图3是本发明实施例提供的另一种调整参数的方法流程图。如图3所示，所述方法包括:
S203、所述第二网络设备接收第一网络设备发送的所述第二组数据帧；
S204、所述第二网络设备检测所述第二组数据帧的帧间隙；
S205、当所述第二组数据帧的帧间隙的比特数包括所述预设帧间隙数值且满足预设条件时，所述第二网络设备根据所述预设帧间隙数据调整所述第二网络设备的通信参数。
在示例中，步骤S205所述预设条件包括：帧间隙的比特数一次或多次为所述预设帧间隙数值；或者，帧间隙的比特数连续多次为所述预设帧间隙数值。例如，所述第二网络设备只要收到一次帧间隙的比特数为所述预设帧间隙数值，就调整所述预设帧间隙数值对应的通信参数。本发明实施例中，所述预设条件可以由所述第一网络设备与所述第二网络设备间自协商确定。所述预设条件也可以由所述第二网络设备确定，并可选地告之所述第一网络设备。
所述第一网络设备可以根据预设发送规则按照所述预设帧间隙数值发送所述第二组数据帧。具体实施方式中，所述预设发送规则可以与所述预设条件相同。所述预设发送规则也可以与所述预设条件不同，具体地，所述第一网络设备为了保证所述第二网络设备收到的所述第二组数据帧的帧间隙满足所述预设条件，可以将所述预设发送规则中的次数设置的比所述预设条件中的次数更多。
可选地，所述方法还包括：在所述第一网络设备和所述第二网络设备建立连接后，所述第一网络设备按照预设的帧间隙协商数值向所述第二网络设备发送第二组数据帧，以便与所述第二网络设备协商是否支持帧间隙参数调整功能；
所述第一网络设备接收所述第二网络设备按照预设的帧间隙应答数值发送的第三组数据帧，以便向所述第一网络设备确认支持帧间隙参数调整功能；
所述第二组数据帧或所述第三组数据帧中包括通信参数与帧间隙数值之间的对应关系。
图4是本发明实施例提供的网络设备间支持帧间隙参数调整功能流程图，如图4所示，包括如下步骤：
S401、本端网络设备和对端网络设备自协商通信建立；
S402、本端网络设备和对端网络设备连续三次按照预设的帧间隙协商数值(例如，128bit)发送数据帧；
S403、对端网络设备接收到数据报文后，PHY器件的PCS层检测帧间隙；
S404、如果对端网络设备支持支持帧间隙参数调整功能，且帧间隙包括所述预设的帧间隙协商数值(128bit)，对端网络设备按照预设的帧间隙应答数值(例如120bit)回应数据帧给本端网络设备，告之本端网络设备自己支持帧间隙参数调整功能；
S405、如果对端网络设备不支持帧间隙参数调整功能，则按正常数据帧流程处理。具体地，对端网络设备不按照上述预设的帧间隙应答数值，而是按照默认帧间隙发送数据帧，与本端网络设备通信。
通过上述步骤S401-404完成是否支持帧间隙参数调整功能的协商。
在步骤S402中，还可以将本端网络设备和对端网络设备连续三次设置为非连续三次，例如本端网络设备按照帧间隙数值为128bit、96bit、128bit、96bit、128bit发送数据帧。
图5是本发明实施例提供的调整发送光功率流程图。如图5所示，以调整对端网络设备的发送光功率为例。本端网络设备在判断自身的接收光功率过大时，本端网络设备和对端网络设备连续三次按照预设的帧间隙协商数值(例如112bit)发送一组数据帧，其中预设的帧间隙协商数值可调。因为一个字节是8bit，所以预设的帧间隙协商数值一般设为8bit的倍数。告知对端网络设备需要调整发送光功率；而对端网络设备感受到连续多个特定时长帧间隙数值的数据报文，做相应的控制，实现双方通信。
本端网络设备和对端网络设备完成帧间隙参数调整功能的确认之后，通过如下步骤去调整对端网络设备发送光功率(本端网络设备和对端网络设备可以同时触发)。
S501、本端网络设备和对端网络设备自协商通信建立；本端网络设备和对端网络设备发送第一组数据帧；
S502、本端网络设备和对端网络设备判断自身接收的光功率是否偏离，比如需要-10dB即可满足信号要求，当前监控到接收光功率为-3dB，发起调整命令；如果本端网络设备和对端网络设备判断自身的接受光功率未偏离，流程结束；
S503、本端网络设备和对端网络设备连续三次按照预设的帧间隙协商数值(例如112bit)发送第二组数据帧，所述预设帧间隙数值用于指示所述对端网络设备按照所述预设帧间隙数值调整对应的通信参数；
S504、本端网络设备连续三次判断对端网络设备发送的第二组数据帧的帧间隙是否在预设帧间隙数值内(例如帧间隙数值大于110bit)。连续三次判断对端网络设备发送的第二组数据帧数据帧是否在预设帧间隙数值内目的在于提高数据帧的帧间隙检测的可靠性；
S505、如果本端网络设备连续三次判断对端网络设备发送的第二组数据帧的帧间隙在预设值内(例如帧间隙数值大于110bit)，即证明对端网络设备要求降低发送光功率， 要调整驱动电流。
本发明实施例提供的一种网络设备间相互通讯方法，通过调整帧间隙的数值，实现双方网络设备的底层通讯，控制对端网络设备，达到性能、功耗等特点主动优化提升。
本端网络设备和对端网络设备在自协商通信建立之后，双方的发送参数不会再变化，但随着外部环境的变化时，两台网络设备间原协商的参数有可能无法适应新的环境温度，恶劣条件下有可能造成链路通信中断。
图6是本发明实施例提供的理想的阶跃曲线及经过衰减后的波形。如图6所示，本端网络设备或对端网络设备发送的电信号是理想阶跃响应，而经过信号链路的衰减后，信号畸变成了图6所示的单次阶跃相应，并且连续两个信号间会有码间干扰，这就需要调整参数中的主抽头、左抽头、右抽头三个参数，以达到抑制干扰，优化链路信号的目的。
图7是本发明实施例提供的调整误码率流程图。如图7所示，包括：
S701、本端网络设备和对端网络设备自协商建立连接，本端网络设备和对端网络设备发送一组数据帧；
S702、判断自身接收端的误码率是否增大，响应于自身接收端的误码率增大，有丢包风险时，开始启动调参过程，否则结束流程；
S703、本端网络设备和对端网络设备按照预设的帧间隙协商数值发送第一组数据帧，所述预设帧间隙数值用于指示所述对端网络设备按照所述预设帧间隙数值调整对应的通信参数，需要增大通信参数时，将预设的帧间隙协商数值调整为104bit，或者需要减小通信参数时，可以将预设的帧间隙协商数值调整为80bit；
S704、对端网络设备连续三次判断该组数据帧的帧间隙数值是否大于预设帧间隙数值下限或小于预设帧间隙数值上限(例如帧间隙数值大于100bit或小于88bit)，未响应于连续三次判断该组数据帧的帧间隙数值大于预设帧间隙数值下限或小于预设帧间隙数值上限(例如大于100bit或小于88bit)，结束流程；
S705、对端网络设备连续三次判断该组数据帧的帧间隙数值大于预设帧间隙数值下限或小于预设帧间隙数值上限(例如帧间隙数值大于100bit或小于88bit)，调整自身的发送参数主抽头(例如将发送参数主抽头加1或减1)；
S706、本端网络设备和对端网络设备发送第二组数据帧，判断误码率是否减少，若误码率减少，结束；若误码率未减少,继续调整发送参数主抽头值，步骤S703、S704、S705、S706最多能重复三次。
如图7所示，通过上述调整调整自身的发送参数主抽头值之后，误码率仍然很大的情况下，采用下述步骤调节右抽头参数：
S711、本端网络设备和对端网络设备按照预设的帧间隙协商数值发送第一组数据帧，所述预设帧间隙数值用于指示所述对端网络设备按照所述预设帧间隙数值调整对应的通信参数。需要增大参数时，可以调整预设的帧间隙协商数值为104bit，或者需要减小参数时，可以调整预设的帧间隙协商数值为80bit；
S712、对端网络设备连续三次判断该组数据帧的帧间隙数值是否大于预设帧间隙数值下限或小于预设帧间隙数值上限(例如帧间隙数值大于100bit或小于88bit)，连续三次判断该组数据帧帧间隙比特数未大于预设帧间隙数值下限或小于预设帧间隙数值上限(大于100bit或小于88bit)，结束流程；
S713、连续三次判断该组数据帧帧间隙比特数大于预设帧间隙数值下限或小于预设帧间隙数值上限，对端网络设备调整自身的发送参数右抽头值(例如将发送参数右抽头值加1或减1)；
S714、本端网络设备和对端网络设备一组数据帧,判断误码率是否减少，响应于误码率减少，结束，未响应于误码率减少，继续调整发送参数右抽头值，步骤S711、S712、S713、S714最多能重复三次。
如图7所示，通过上述调整调整自身的发送参数右抽头值之后，误码率仍然很大的情况下，采用下述步骤调节左抽头参数；
S721、本端网络设备和对端网络设备按照预设的帧间隙协商数值发送第一组数据帧，所述预设帧间隙数值用于指示所述对端网络设备按照所述预设帧间隙数值调整对应的通信参数。需要增大参数时，调整预设的帧间隙协商数值到104bit，或者需要减小参数时，将预设的帧间隙协商数值减少到80bit；
S722、连续三次判断该组数据帧的帧间隙数值大于预设帧间隙数值下限或小于预设帧间隙数值上限(例如帧间隙数值大于100bit或小于88bit)，未响应于连续三次判断该组数据帧的帧间隙数值大于预设帧间隙数值下限或小于预设帧间隙数值上限(例如大于100bit或小于88bit)，结束流程；
S723、对端网络设备响应于连续三次判断该组数据帧的帧间隙数值大于预设帧间隙数值下限或小于预设帧间隙数值上限(例如帧间隙数值大于100bit或小于88bit)，调整自身的发送参数右抽头值(例如将发送参数右抽头值加1或减1)；
S724、本端网络设备和对端网络设备按照预设的帧间隙协商数值发送第二组数据帧,对端网络设备判断该组数据帧误码率是否减少，若该组数据帧误码率减小，结束，未响应于该组数据帧误码率减小继续调整发送参数右抽头值，步骤S721、S722、S723、S724可以重复三次。
通过此方法，建立通信后，调整帧间隙长度，先后进行调节双方的主抽头、左抽头、右抽头三个主要预加重参数；可以做到动态调整设备间的发送、预加重及接收的均衡参数，保证链路通信的可靠性。
图8是本发明实施例提供的通信系统的结构示意图。如图8所示，该系统包括第一网络设备801以及第二网络设备802，所述第一网络设备和所述第二网络设备相互可以通过调整帧间隙，指示对方调整通信参数。
图9是本发明实施例提供的参数调整装置的结构示意图。所述参数调整装置900可用于图8所示通信系统中的第一网络设备801中。如图9所示，所述参数调整装置900包括：接收模块901、判断模块902以及发送模块903。
所述接收模块901用于接收第二网络设备发送的第一组数据帧；
所述判断模块902用于判断是否需要调整所述第二网络设备的通信参数；
所述发送模块903用于在所述判断模块确定需要调整所述第二网络设备的通信参数时，按照预设帧间隙数值向所述第二网络设备发送第二组数据帧，所述预设帧间隙数值用于指示所述第二网络设备按照所述预设帧间隙数值调整对应的通信参数。
所述判断模块902具体用于：
根据接收到的所述第一组数据帧的误码率，判断是否需要调整所述第二网络设备的预 加重参数；所述通信参数包括预加重参数；
当误码率大于预设误码率阈值时，确定需要调整所述第二网络设备的预加重参数，并确定所述预设帧间隙数值为第三数值或第四数值，所述第三数值用于指示所述第二网络设备调大所述第二网络设备的预加重参数，所述第四数值用于指示所述第二网络设备调小所述第二网络设备的预加重参数；
所述预加重参数包括如下任意一个或多个：主抽头；左抽头；右抽头。
判断模块902具体用于根据接收所述第一组数据帧的接收光功率，判断是否需要调整所述第二网络设备的发送光功率；所述通信参数包括发送光功率；
当所述接收模块接收所述第一组数据帧的接收光功率不小于预设接收光功率上限时，确定需要调整所述第二网络设备的发送光功率，并确定所述预设帧间隙数据为第一数值，所述第二数值用于指示所述第二网络设备调小发送光功率；
当所述接收模块接收所述第一组数据帧的接收光功率不大于预设接收光功率下限时，确定需要调整所述第二网络设备的发送光功率，并确定所述预设帧间隙数据为第二数值，所述第二数值用于指示所述第二网络设备调大发送光功率。
参数调整装置900还包括协商模块。
所述协商模块用于在所述第一网络设备和所述第二网络设备建立连接后，按照预设的帧间隙协商数值向所述第二网络设备发送第三组数据帧，以便与所述第二网络设备协商是否支持帧间隙参数调整功能；
所述接收模块还用于接收所述第二网络设备按照预设的帧间隙应答数值发送的第四组数据帧；
所述第三组数据帧或所述第四组数据帧中包括通信参数与帧间隙数值之间的对应关系。
进一步地，所述参数调整装置900还包括检测模块和调整模块。
所述接收模块还用于接收第二网络设备发送的第五组数据帧。
所述检测模块用于检测所述第五组数据帧的帧间隙。
所述调整模块用于当所述检测模块检测到的所述第五组数据帧的帧间隙的比特数为所述预设帧间隙数值且满足预设条件时，根据所述预设帧间隙数据调整所述第一网络设备的通信参数。
图10是本发明实施例提供的参数调整装置的另一结构示意图。如图10所示，所述参数调整装置1000包括：处理器1001，PHY器件1002，存储器1003和通信端口1004。
处理器1001，PHY器件1002，存储器1003和通信端口1004通过总线相互连接。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图10中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
存储器1003可以包括易失性存储器(英文：volatile memory)，例如随机存取存储器(英文：random-access memory，缩写：RAM)；存储器也可以包括非易失性存储器(英文：non-volatile memory)，例如快闪存储器(英文：flash memory)，硬盘(英文：hard disk drive，缩写：HDD)或固态硬盘(英文：solid-state drive，缩写：SSD)；存储器1003还可以包括上述种类的存储器的组合。
所述存储器1003用于存储通信参数与帧间隙数值的对应关系。
可选地，所述存储器1003还用于存储所述预设发送规则、数据帧等。
处理器1001可以是中央处理器(英文：central processing unit，缩写：CPU)，网络处理器(英文：network processor，缩写：NP)或者CPU和NP的组合。处理器1001还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(英文：application-specific integrated circuit，缩写：ASIC)，可编程逻辑器件(英文：programmable logic device，缩写：PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(英文：complex programmable logic device，缩写：CPLD)，现场可编程逻辑门阵列(英文：field-programmable gate array，缩写：FPGA)，通用阵列逻辑(英文：generic array logic,缩写：GAL)或其任意组合。
可选地，存储器1003还可以用于存储程序指令，处理器1001调用该存储器1003中存储的程序指令，可以执行图2-7所示方法中的一个或多个步骤，或其中可选的实施方式，使得所述参数调整装置实现上述方法中第一网络设备的功能。
需要说明的是本发明实施例提供的调整参数的方法可用于光模块通信，还可用于使用铜缆、双绞线等介质连接的网络设备之间通信。在使用铜缆、双绞线等介质通信时，只需对预加重参数进行调整。在采用光模块通信时，不仅可以调整预加重参数，还可以调整光功率。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
专业人员应该还可以进一步意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
结合本文中所公开的实施例描述的方法或算法的步骤可以用硬件、处理器模块执行的软件模块，或者二者的结合来实施。软件模块可以置于随机存储器(RAM)、内存、只读存储器(ROM)、电可编程ROM、电可擦除可编程ROM、寄存器、硬盘、可移动磁盘、CD-ROM、或技术领域内所公知的任意其它形式的存储介质中。
以上具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上该仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (12)

  1. 一种调整参数的方法，其特征在于，包括：
    第一网络设备接收第二网络设备发送的第一组数据帧；
    当所述第一网络设备确定所述第二网络设备的通信参数需要调整时，所述第一网络设备按照预设帧间隙数值向所述第二网络设备发送第二组数据帧，所述预设帧间隙数值用于指示所述第二网络设备按照所述预设帧间隙数值调整对应的通信参数。
  2. 根据权利要求1所述的方法，其特征在于，在所述第一网络设备确定所述第二网络设备的通信参数需要调整之前，所述方法还包括：
    所述第一网络设备根据接收到的所述第一组数据帧的误码率，判断是否需要调整所述第二网络设备的预加重参数；所述通信参数包括预加重参数；
    当误码率大于预设误码率阈值时，所述第一网络设备确定需要调整所述第二网络设备的预加重参数。
  3. 根据权利要求2所述的方法，其特征在于，所述预加重参数包括主抽头；
    所述第一网络设备确定需要调整所述第二网络设备的预加重参数包括：
    所述第一网络设备确定需要调整所述第二网络设备的主抽头，并确定所述预设帧间隙数值为第三数值或第四数值，所述第三数值用于指示所述第二网络设备调大所述第二网络设备的主抽头，所述第四数值用于指示所述第二网络设备调小所述第二网络设备的主抽头。
  4. 根据权利要求1至3任一项所述的方法，其特征在于，在所述第一网络设备确定所述第二网络设备的通信参数需要调整之前，所述方法还包括：
    所述第一网络设备根据接收所述第一组数据帧的接收光功率，判断是否需要调整所述第二网络设备的发送光功率；所述通信参数包括发送光功率；
    当所述第一网络设备接收所述第一组数据帧的接收光功率不小于预设接收光功率上限时，所述第一网络设备确定需要调整所述第二网络设备的发送光功率，并确定所述预设帧间隙数据为第一数值，所述第一数值用于指示所述第二网络设备调小发送光功率；
    当所述第一网络设备接收所述第一组数据帧的接收光功率不大于预设接收光功率下限时，所述第一网络设备确定需要调整所述第二网络设备的发送光功率，并确定所述预设帧间隙数据为第二数值，所述第二数值用于指示所述第二网络设备调大发送光功率。
  5. 一种调整参数的方法，其特征在于，包括：
    第一网络设备接收第二网络设备发送的第一组数据帧；
    所述第一网络设备检测所述第一组数据帧的帧间隙；
    当所述帧间隙的比特数为预设帧间隙数值且满足预设条件时，所述第一网络设备根据所述预设帧间隙数据调整所述第一网络设备的通信参数。
  6. 根据权利要求5所述的方法，其特征在于，所述预设条件包括：
    一次或多次为所述预设帧间隙数值；
    或者，连续多次为所述预设帧间隙数值。
  7. 根据权利要求5或6所述的方法，其特征在于，还包括：
    所述第一网络设备和所述第二网络设备建立连接后，所述第一网络设备按照预设的帧间隙协商数值向所述第二网络设备发送第二组数据帧，以便与所述第二网络设备协商是否支持帧间隙参数调整功能；
    所述第一网络设备接收所述第二网络设备按照预设的帧间隙应答数值发送的第三组数据帧，以便向所述第一网络设备确认支持帧间隙参数调整功能；
    所述第二组数据帧或所述第三组数据帧中包括通信参数与帧间隙数值之间的对应关系。
  8. 一种参数调整装置，用于第一网络设备中，其特征在于，所述参数调整装置包括：
    接收模块，用于接收第二网络设备发送的第一组数据帧；
    判断模块，用于判断是否需要调整所述第二网络设备的通信参数；
    发送模块，用于在所述判断模块确定需要调整所述第二网络设备的通信参数时，按照预设帧间隙数值向所述第二网络设备发送第二组数据帧，所述预设帧间隙数值用于指示所述第二网络设备按照所述预设帧间隙数值调整对应的通信参数。
  9. 根据权利要求8所述的装置，其特征在于，所述判断模块具体用于：
    根据接收到的所述第一组数据帧的误码率，判断是否需要调整所述第二网络设备的预加重参数；所述通信参数包括预加重参数；
    当误码率大于预设误码率阈值时，确定需要调整所述第二网络设备的预加重参数，并确定所述预设帧间隙数值为第三数值或第四数值，所述第三数值用于指示所述第二网络设备调大所述第二网络设备的预加重参数，所述第四数值用于指示所述第二网络设备调小所述第二网络设备的预加重参数；
    所述预加重参数包括如下任意一个或多个：
    主抽头；
    左抽头；
    右抽头。
  10. 根据权利要求8或9所述的装置，其特征在于，所述判断模块具体用于：
    根据接收所述第一组数据帧的接收光功率，判断是否需要调整所述第二网络设备的发送光功率；所述通信参数包括发送光功率；
    当所述接收模块接收所述第一组数据帧的接收光功率不小于预设接收光功率上限时，确定需要调整所述第二网络设备的发送光功率，并确定所述预设帧间隙数据为第一数值，所述第二数值用于指示所述第二网络设备调小发送光功率；
    当所述接收模块接收所述第一组数据帧的接收光功率不大于预设接收光功率下限时，确定需要调整所述第二网络设备的发送光功率，并确定所述预设帧间隙数据为第二数值，所述第二数值用于指示所述第二网络设备调大发送光功率。
  11. 根据权利要求8至10任一项所述的装置，其特征在于，还包括协商模块；
    所述协商模块，用于在所述第一网络设备和所述第二网络设备建立连接后，按照预设的帧间隙协商数值向所述第二网络设备发送第三组数据帧，以便与所述第二网络设备协商是否支持帧间隙参数调整功能；
    所述接收模块还用于接收所述第二网络设备按照预设的帧间隙应答数值发送的第四组数据帧；
    所述第三组数据帧或所述第四组数据帧中包括通信参数与帧间隙数值之间的对应关系。
  12. 根据权利要求8至11任一项所述的装置，其特征在于，还包括检测模块和调整 模块；
    所述接收模块还用于接收第二网络设备发送的第五组数据帧；
    所述检测模块，用于检测所述第五组数据帧的帧间隙；
    所述调整模块，用于当所述检测模块检测到的所述第五组数据帧的帧间隙的比特数为所述预设帧间隙数值且满足预设条件时，根据所述预设帧间隙数据调整所述第一网络设备的通信参数。
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