CN109698762B - Parameter adjusting method and parameter adjusting device - Google Patents
Parameter adjusting method and parameter adjusting device Download PDFInfo
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- CN109698762B CN109698762B CN201711002250.9A CN201711002250A CN109698762B CN 109698762 B CN109698762 B CN 109698762B CN 201711002250 A CN201711002250 A CN 201711002250A CN 109698762 B CN109698762 B CN 109698762B
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
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- H04Q2011/0079—Operation or maintenance aspects
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Abstract
The invention provides a method for adjusting parameters and a parameter adjusting device, wherein the method comprises the following steps: the method comprises the steps that a first network device receives a first group of data frames sent by a second network device; when the first network device determines that the communication parameters of the second network device need 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 preset frame gap value is used to instruct the second network device to adjust the corresponding communication parameters according to the preset frame gap value. The invention achieves the function of communication between devices by adjusting the frame gap in the communication protocol as the judgment condition for adjusting the control command of both network devices.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method for adjusting parameters and a parameter adjusting apparatus.
Background
Optical fiber communication is a communication method for transmitting signals by using optical fibers to realize information transfer. Optical fiber communication has the advantages of high bandwidth, small signal attenuation, light weight, low cost and the like. Fiber optic communications have been widely used in access devices and convergence devices.
After the network device is connected through the medium, before the port UP, a series of operations such as capability negotiation, lower parameters and the like can be carried out, and after the configuration of the two parts is completed, the port UP is carried out; after the UP of the port, the channel generally transmits service messages, and the network devices of both sides do not interact with each other on the control signal. When a port of a certain device is desired to be controlled, for example, adjusting a transmission parameter and modifying a transmission optical power of an optical module, a similar control signal can be implemented only by manually intervening and executing a related command on a corresponding board.
In the current data communication, after the network device establishes the link, the network device generally only transmits the data message through the medium, and when the user needs to operate, the user needs to be informed through the management plane, so that the maintenance cost is increased, and the communication efficiency is reduced.
Disclosure of Invention
The method carries out command configuration by using frame gaps in a detection communication message, reduces upper-layer network management software and manual intervention, has low operation and maintenance cost, and completes intelligent and efficient management among equipment.
In a first aspect, the present application provides a method of adjusting a parameter, the method comprising:
the method comprises the steps that a first network device receives a first group of data frames sent by a second network device;
when the first network device determines that the communication parameters of the second network device need 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 preset frame gap value is used to instruct the second network device to adjust the corresponding communication parameters according to the preset frame gap value.
According to the method for adjusting the parameters, the command configuration is carried out by detecting the frame gap in the communication message, upper-layer network management software and manual intervention are reduced, the operation and maintenance cost is low, and intelligent and efficient management among network devices is completed.
With reference to the first aspect, in a first possible implementation manner, before the first network device determines that the communication parameter of the second network device needs to be adjusted, the method further includes:
the first network equipment judges whether the pre-emphasis parameter of the second network equipment needs to be adjusted or not according to the received error rate of the first group of data frames; the communication parameters include pre-emphasis parameters;
and when the error rate is greater than a preset error rate threshold value, the first network equipment determines that the pre-emphasis parameter of the second network equipment needs to be adjusted.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, the determining, by the first network device, that the pre-emphasis parameter of the second network device needs to be adjusted includes:
the first network device determines that a main tap of the second network device needs to be adjusted, and determines that the preset frame gap value is a third value or a fourth value, wherein the third value is used for indicating the second network device to increase the main tap of the second network device, and the fourth value is used for indicating the second network device to decrease the main tap of the second network device.
With reference to the first aspect or any one of the possible implementations of the first aspect, in a third possible implementation,
before the first network device determines that the communication parameters of the second network device need to be adjusted, the method further comprises:
the first network equipment judges whether the transmitting optical power of the second network equipment needs to be adjusted or not according to the receiving optical power of the first group of data frames; the communication parameter comprises a transmit optical power;
when the received optical power of the first network device for receiving the first group of data frames is not less than the upper limit of the preset received optical power, the first network device determines that the transmitted optical power of the second network device needs to be adjusted, and determines that the preset frame gap data is a first numerical value, wherein the first numerical value is used for indicating the second network device to reduce the transmitted optical power;
when the received optical power of the first network device for receiving the first group of data frames is not greater than a preset received optical power lower limit, the first network device determines that the transmitted optical power of the second network device needs to be adjusted, and determines that the preset frame gap data is a second numerical value, wherein the second numerical value is used for indicating the second network device to increase the transmitted optical power.
In a second aspect, the present application provides a method of adjusting a parameter, the method comprising:
the method comprises the steps that a first network device receives a first group of data frames sent by a second network device;
the first network device detecting a frame gap of the first group of data frames;
and when the bit number of the frame gap is a preset frame gap value and meets a preset condition, the first network equipment adjusts the communication parameters of the first network equipment according to the preset frame gap data.
With reference to the second aspect, in a first possible implementation manner, the preset condition includes:
setting the preset frame gap value once or for multiple times;
or, the preset frame gap value is continuously obtained for multiple times.
With reference to the second aspect or the first possible implementation manner of the second aspect, the method further includes:
after the first network device and the second network device establish 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 negotiate with the second network device whether a frame gap parameter adjustment function is supported or not;
the first network equipment receives a third group of data frames sent by the second network equipment according to a preset frame gap response value so as to confirm that the first network equipment supports a frame gap parameter adjusting function;
the second group of data frames or the third group of data frames comprise corresponding relations between communication parameters and frame gap values.
In a third aspect, the present application provides a parameter adjusting apparatus, where the parameter adjusting apparatus is used in a first network device, and the parameter adjusting apparatus includes:
the receiving module is used for receiving a first group of data frames sent by second network equipment;
the judging module is used for judging whether the communication parameters of the second network equipment need to be adjusted or not;
and a sending module, configured to send a second group of data frames to the second network device according to a preset frame gap value when the determining module determines that the communication parameter of the second network device needs to be adjusted, where the preset frame gap value is used to instruct the second network device to adjust the corresponding communication parameter according to the preset frame gap value.
With reference to the third aspect, in a first possible implementation manner, the determining module is specifically configured to:
judging whether a pre-emphasis parameter of the second network equipment needs to be adjusted or not according to the error rate of the received first group of data frames; the communication parameters include pre-emphasis parameters;
when the bit error rate is greater than a preset bit error rate threshold value, determining that a 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, wherein the third value is used for indicating the second network device to increase the pre-emphasis parameter of the second network device, and the fourth value is used for indicating the second network device to decrease the pre-emphasis parameter of the second network device;
the pre-emphasis parameters include any one or more of:
a main tap;
a left tap;
and (4) a right tap.
With reference to the third aspect or the first possible implementation manner, in a second possible implementation manner, the determining module is specifically configured to:
judging whether the transmitting optical power of the second network equipment needs to be adjusted or not according to the receiving optical power of the first group of data frames; the communication parameter comprises a transmit optical power;
when the receiving optical power of the first group of data frames received by the receiving module is not less than the upper limit of the preset receiving optical power, determining that the sending optical power of the second network equipment needs to be adjusted, and determining that the preset frame gap data is a first numerical value, wherein the first numerical value is used for indicating the second network equipment to reduce the sending optical power;
when the receiving optical power of the first group of data frames received by the receiving module is not greater than a preset receiving optical power lower limit, determining that the sending optical power of the second network equipment needs to be adjusted, and determining that the preset frame gap data is a second numerical value, wherein the second numerical value is used for indicating the second network equipment to increase the sending optical power.
With reference to the third aspect, the first or the second any possible implementation manner, in a third possible implementation manner, the method further includes a negotiation module;
the negotiation module is configured to send a third group of data frames to the second network device according to a preset frame gap negotiation value after the first network device and the second network device establish a connection, so as to negotiate with the second network device whether a frame gap parameter adjustment function is supported;
the receiving module is further configured to receive a fourth group of data frames sent by the second network device according to a preset frame gap response value;
and the third group of data frames or the fourth group of data frames comprise the corresponding relation between the communication parameters and the frame gap values.
With reference to the third aspect or any possible implementation manner of the third aspect, in a third possible implementation manner, the apparatus 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 detection module is used for detecting a frame gap of the fifth group of data frames;
the adjusting module is configured to adjust the communication parameter of the first network device according to the preset frame gap data 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.
In a fourth aspect, the present application provides a parameter adjusting apparatus, where the parameter adjusting apparatus is used in a first network device, and the parameter adjusting apparatus includes: a transceiver and a processor;
a transceiver for receiving a first set of data frames transmitted by a second network device;
the processor is used for judging whether the communication parameters of the second network equipment need to be adjusted or not;
and the transceiver is configured to send a second group of data frames to the second network device according to a preset frame gap value when the processor determines that the communication parameter of the second network device needs to be adjusted, where the preset frame gap value is used to instruct the second network device to adjust the corresponding communication parameter according to the preset frame gap value.
In a fifth aspect, the present application provides a computer readable storage medium storing a program comprising instructions for carrying out the method of the first aspect described above or any one of the possible designs of the first aspect.
In a sixth aspect, the present application provides a computer readable storage medium storing a program comprising instructions for performing the method of the second aspect described above or any one of the possible designs of the second aspect.
In a seventh aspect, the present application provides a computer program comprising instructions for carrying out the method of the first aspect described above or any one of the possible designs of the first aspect.
In an eighth aspect, the present application provides a computer program comprising instructions for carrying out the method of the second aspect described above or any one of the possible designs of the second aspect.
Drawings
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 flow chart of a method for adjusting parameters according to an embodiment of the present invention;
FIG. 3 is a flow chart of another method for adjusting parameters according to an embodiment of the present invention;
fig. 4 is a flowchart of a function of adjusting parameters of a support frame gap between network devices according to an embodiment of the present invention;
FIG. 5 is a flow chart of adjusting the transmitted optical power according to an embodiment of the present invention;
FIG. 6 is an idealized step curve and attenuated waveform provided by an embodiment of the present invention;
FIG. 7 is a flow chart of adjusting bit error rate according to an embodiment of the present invention;
FIG. 8 is a diagram illustrating 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 adjusting apparatus according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Fig. 1 is a schematic structural diagram of a physical layer device in an optical module according to an embodiment of the present invention. As shown in fig. 1, the Physical layer device (PHY) includes, from bottom to top, a Physical Medium Dependent (PMD) layer 103, a Physical Medium Attachment (PMA) layer 102, and a Physical Coding Sublayer (PCS) layer 101. In an example, a first network device and a second network device connect PMD (PMD) layers 103 of the two devices through a Medium, perform serial-to-parallel conversion through a Physical Medium Attachment (PMA) layer 102, and form a complete data frame format after descrambling is performed by a Physical Coding Sublayer (PCS) 101; at the PCS layer 101, a frame gap (IFG) is monitored for a time for a subsequent operation, so that auto-negotiation communication establishment between the first network device and the second network device is completed. The frame gap according to the embodiments of the present invention refers to a time duration between two adjacent frames of the ethernet network. For the same communication rate, the number of bits (bits) contained in the frame gap is different, and the duration between two frames is different. The more the number of bits, the longer 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 carries out command configuration by using frame gaps in a detection communication message, reduces upper-layer network management software and manual intervention, has low operation and maintenance cost, and completes intelligent and efficient management among network devices.
In the description of the embodiments of the invention, the terms "first," "second," and the like are used for distinguishing between descriptions and not necessarily for describing a sequential or chronological order.
In the description of the embodiment of the present invention, "and/or" is used to describe the association relationship of the associated object, which means that three relationships may exist. For example, a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
In the embodiment of the invention, different frame gap values are adopted for different communication parameters. The communication parameters include pre-emphasis parameters, transmit optical power, etc. The Pre-emphasis parameters include a Main tap (Main), a left tap (Pre), and a right tap (Post). The following description of the embodiments is provided as an example only, and any variations within the principles of the present invention are intended to be included within the scope of the present invention.
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:
s201, a first network device receives a first group of data frames sent by a second network device;
after the first network device and the second network device establish a connection, the first network device receives a first group of data frames sent by the second network device, and if the communication quality is found to be poor according to the first group of data frames and the communication parameters need to be adjusted, step S202 is continued.
S202, when 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 preset frame gap value is used to instruct the second network device to adjust the corresponding communication parameter according to the preset frame gap value.
In an example, prior to step S202, the method further comprises:
the first network equipment judges whether the pre-emphasis parameter of the second network equipment needs to be adjusted or not according to the received error rate of the first group of data frames; the communication parameters include pre-emphasis parameters;
and when the error rate is greater than a preset error rate threshold value, the first network equipment determines that the pre-emphasis parameter of the second network equipment needs to be adjusted.
In an example, the pre-emphasis parameter comprises a main tap;
the determining, by the first network device, that the pre-emphasis parameter of the second network device needs to be adjusted includes:
the first network device determines that a main tap of the second network device needs to be adjusted, and determines that the preset frame gap value is a third value or a fourth value, wherein the third value is used for indicating the second network device to increase the main tap of the second network device, and the fourth value is used for indicating the second network device to decrease the main tap of the second network device.
Further, the pre-emphasis parameters also include a left tap, or a right tap. After the first network device sends a second set of data frames to the second network device according to the third value or the fourth value, and instructs the second network device to adjust the main tap, the method further includes:
the first network device determines that a left tap of the second network device needs to be adjusted, and determines that the preset frame gap value is a fifth value or a sixth value, wherein the fifth value is used for indicating the second network device to adjust the left tap of the second network device larger, and the sixth value is used for indicating the second network device to adjust the left tap of the second network device smaller;
and/or the presence of a gas in the gas,
the first network device determines that a right tap of the second network device needs to be adjusted, and determines that the preset frame gap value is a seventh value or an eighth value, where the seventh value is used for instructing the second network device to increase the right tap of the second network device, and the eighth value is used for instructing the second network device to decrease the right tap of the second network device.
Optionally, if optical communication is used between the first network device and the second network device, before step S202, the method may further include:
the first network equipment judges whether the transmitting optical power of the second network equipment needs to be adjusted or not according to the receiving optical power of the first group of data frames; the communication parameter comprises a transmit optical power;
when the received optical power of the first network device for receiving the first group of data frames is not less than the upper limit of the preset received optical power, the first network device determines that the transmitted optical power of the second network device needs to be adjusted, and determines that the preset frame gap data is a first numerical value, wherein the first numerical value is used for indicating the second network device to reduce the transmitted optical power;
when the received optical power of the first network device for receiving the first group of data frames is not greater than a preset received optical power lower limit, the first network device determines that the transmitted optical power of the second network device needs to be adjusted, and determines that the preset frame gap data is a second numerical value, wherein the second numerical value is used for indicating the second network device to increase the transmitted optical power.
In the embodiment of the present invention, a frame gap between data frames when the first network device or the second network device normally communicates is a default frame gap, for example, a commonly used 96 bit. For example, in step S201, a default frame gap is used between the first group of data frames transmitted by the second network device. When a certain communication parameter of the opposite terminal needs to be adjusted, a data frame is sent according to a preset frame gap value to inform the opposite terminal network equipment to realize the function. For example, in step S202, the second network device sends a second group of data frames according to a preset frame gap value, and instructs the second network device to adjust the communication parameters corresponding to the preset frame gap value.
Optionally, the first network device also synchronously adjusts the 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:
s203, the second network equipment receives the second group of data frames sent by the first network equipment;
s204, the second network equipment detects the frame gap of the second group of data frames;
s205, when the number of bits in the frame gap of the second group of data frames includes the preset frame gap value and meets a preset condition, the second network device adjusts the communication parameter of the second network device according to the preset frame gap data.
In an example, the preset condition of step S205 includes: the bit number of the frame gap is the preset frame gap value once or for multiple times; or, the number of bits of the frame gap is continuously the preset frame gap value for multiple times. For example, as long as the number of bits of the received primary frame gap is the preset frame gap value, the second network device adjusts the communication parameter corresponding to the preset frame gap value. In this embodiment of the present invention, the preset condition may be determined by auto-negotiation between the first network device and the second network device. The predetermined condition may also be determined by the second network device and optionally advertised to the first network device.
The first network device may transmit the second group of data frames according to a preset frame gap value according to a preset transmission rule. In a specific embodiment, the preset sending rule may be the same as the preset condition. The preset sending rule may also be different from the preset condition, and specifically, in order to ensure that the frame gap of the second group of data frames received by the second network device satisfies the preset condition, the first network device may set the number of times in the preset sending rule to be greater than the number of times in the preset condition.
Optionally, the method further comprises: after the first network device and the second network device establish 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 negotiate with the second network device whether a frame gap parameter adjustment function is supported or not;
the first network equipment receives a third group of data frames sent by the second network equipment according to a preset frame gap response value so as to confirm that the first network equipment supports a frame gap parameter adjusting function;
the second group of data frames or the third group of data frames comprise corresponding relations between communication parameters and frame gap values.
Fig. 4 is a flowchart of a function of adjusting a supported frame gap parameter between network devices according to an embodiment of the present invention, as shown in fig. 4, including the following steps:
s401, establishing self-negotiation communication between the local terminal network equipment and the opposite terminal network equipment;
s402, the local terminal network equipment and the opposite terminal network equipment continuously transmit data frames three times according to a preset frame gap negotiation value (for example, 128 bit);
s403, after the opposite terminal network device receives the data message, the PCS layer of the PHY device detects the frame gap;
s404, if the opposite terminal network device supports the frame gap parameter adjusting function and the frame gap comprises the preset frame gap negotiation value (128bit), the opposite terminal network device responds a data frame to the local terminal network device according to the preset frame gap response value (for example, 120bit), and informs the local terminal network device that the local terminal network device supports the frame gap parameter adjusting function;
s405, if the opposite terminal network equipment does not support the frame gap parameter adjusting function, processing according to the normal data frame flow. Specifically, the peer network device sends the data frame according to the default frame gap, instead of the preset frame gap response value, to communicate with the home network device.
The negotiation of whether the frame gap parameter adjustment function is supported is completed through the above-mentioned steps S401 to 404.
In step S402, the home network device and the peer network device may be set to be discontinuous three times, for example, the home network device sends a data frame according to a frame gap value of 128bit, 96bit, 128 bit.
Fig. 5 is a flow chart of adjusting the transmitted optical power according to an embodiment of the present invention. As shown in fig. 5, the transmitting optical power of the peer network device is adjusted as an example. When the local network device determines that the received optical power of the local network device is too high, the local network device and the opposite network device continuously transmit a group of data frames three times according to a preset frame gap negotiation value (for example, 112bit), wherein the preset frame gap negotiation value is adjustable. Since one byte is 8 bits, the predetermined value of the frame gap negotiation value is generally set to a multiple of 8 bits. Informing the opposite terminal network device of the need of adjusting the transmitting optical power; and the opposite terminal network equipment senses the data messages of a plurality of continuous specific time frame gap values and performs corresponding control to realize the communication between the two parties.
After the home network device and the peer network device complete the confirmation of the frame gap parameter adjustment function, the peer network device adjusts the transmission optical power through the following steps (the home network device and the peer network device can be triggered simultaneously).
S501, self-negotiation communication establishment of the local terminal network equipment and the opposite terminal network equipment is carried out; the home terminal network equipment and the opposite terminal network equipment send a first group of data frames;
s502, the local terminal network device and the opposite terminal network device judge whether the received optical power per se deviates, for example, the signal requirement can be met by needing minus 10dB, and an adjustment command is initiated when the received optical power is monitored to be minus 3dB at present; if the local terminal network device and the opposite terminal network device judge that the received optical power of the local terminal network device and the opposite terminal network device are not deviated, the process is ended;
s503, the home network device and the peer network device send a second group of data frames according to a preset frame gap negotiation value (e.g., 112bit) three times, where the preset frame gap value is used to instruct the peer network device to adjust a corresponding communication parameter according to the preset frame gap value;
s504, the home network device continuously determines for three times whether a frame gap of a 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 bit). Judging whether a second group of data frames sent by the opposite terminal network equipment are within a preset frame gap value for three times continuously to improve the reliability of frame gap detection of the data frames;
s505, if the local network device continuously determines three times that the frame gap of the second group of data frames sent by the peer network device is within the preset value (for example, the frame gap value is greater than 110bit), it proves that the peer network device requires to reduce the sending optical power and adjust the driving current.
According to the method for mutual communication between the network devices, provided by the embodiment of the invention, the bottom layer communication of the network devices of the two parties is realized by adjusting the numerical value of the frame gap, the network device of the opposite end is controlled, and the characteristics of performance, power consumption and the like are actively optimized and improved.
After the auto-negotiation communication is established, the sending parameters of the home network device and the opposite network device do not change, but when the external environment changes, the originally negotiated parameters between the two network devices may not adapt to the new environment temperature, and the link communication may be interrupted under severe conditions.
FIG. 6 is an idealized step curve and attenuated waveform provided by an embodiment of the present invention. As shown in fig. 6, the electrical signal sent by the home network device or the peer network device is an ideal step response, and after attenuation of the signal link, the signal is distorted into a single step response shown in fig. 6, and there is intersymbol interference between two consecutive signals, which requires to adjust three parameters, namely, a main tap, a left tap, and a right tap, in the parameters, so as to achieve the purposes of suppressing the interference and optimizing the link signal.
Fig. 7 is a flowchart of adjusting the bit error rate according to an embodiment of the present invention. As shown in fig. 7, includes:
s701, the local terminal network equipment and the opposite terminal network equipment establish connection through auto-negotiation, and the local terminal network equipment and the opposite terminal network equipment send a group of data frames;
s702, judging whether the error rate of the receiving end is increased, starting a parameter adjusting process when the error rate of the receiving end of;
s703, the local network device and the opposite network device send a first group of data frames according to a preset frame gap negotiation value, where the preset frame gap value is used to instruct the opposite network device to adjust corresponding communication parameters according to the preset frame gap value, and when the communication parameters need to be increased, the preset frame gap negotiation value is adjusted to 104 bits, or when the communication parameters need to be decreased, the preset frame gap negotiation value can be adjusted to 80 bits;
s704, the network device at the opposite end continuously determines for three times whether the frame gap value of the group of data frames 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, the frame gap value is greater than 100bit or less than 88bit), and does not respond to the determination for three times that the frame gap value of the group of data frames 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 100bit or less than 88bit), and the process is ended;
s705, the network device at the opposite end continuously determines three times that the frame gap value of the group of data frames 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, the frame gap value is greater than 100bit or less than 88bit), and adjusts the main tap of the transmission parameter (for example, the main tap of the transmission parameter is increased by 1 or decreased by 1);
s706, the local terminal network device and the opposite terminal network device send a second group of data frames, whether the error rate is reduced or not is judged, and if the error rate is reduced, the operation is finished; if the error rate is not reduced, the main tap value of the transmission parameter is continuously adjusted, and the steps S703, S704, S705, and S706 can be repeated at most three times.
As shown in fig. 7, when the bit error rate is still large after the main tap value of the transmission parameter is adjusted, the right tap parameter is adjusted by the following steps:
and S711, the local terminal network device and the opposite terminal network device send a first group of data frames according to a preset frame gap negotiation value, where the preset frame gap value is used to instruct the opposite terminal network device to adjust corresponding communication parameters according to the preset frame gap value. When the parameter needs to be increased, the preset frame gap negotiation value can be adjusted to be 104 bits, or when the parameter needs to be decreased, the preset frame gap negotiation value can be adjusted to be 80 bits;
s712, the network device at the opposite end continuously determines for three times whether the frame gap value of the group of data frames 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, the frame gap value is greater than 100bit or less than 88bit), continuously determines for three times whether the number of the frame gap bits of the group of data frames 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 100bit or less than 88bit), and ends the process;
s713, continuously judging the number of the frame gap bits of the group of data frames three times to be larger than the lower limit of the preset frame gap value or smaller than the upper limit of the preset frame gap value, and adjusting the self right tap value of the sending parameter (for example, adding 1 or subtracting 1 to the right tap value of the sending parameter) by the opposite terminal network equipment;
s714, the local terminal network device and the opposite terminal network device judge whether the error rate is reduced, respond to the reduction of the error rate, finish, do not respond to the reduction of the error rate, continue to adjust the right tap value of the sending parameter, and the steps S711, S712, S713 and S714 can be repeated at most three times.
As shown in fig. 7, when the error rate is still large after the right tap value of the transmission parameter is adjusted, the left tap parameter is adjusted by the following steps;
s721, the local network device and the peer network device send a first group of data frames according to a preset frame gap negotiation value, where the preset frame gap value is used to instruct the peer network device to adjust corresponding communication parameters according to the preset frame gap value. When the parameters need to be increased, the preset frame gap negotiation value is adjusted to 104 bits, or when the parameters need to be reduced, the preset frame gap negotiation value is reduced to 80 bits;
s722, continuously determining three times that the frame gap value of the group of data frames 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, the frame gap value is greater than 100bit or less than 88bit), and ending the process if the frame gap value of the group of data frames is not determined three times that 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 100bit or less than 88 bit);
s723, in response to determining that the frame gap value of the group of data frames 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, the frame gap value is greater than 100bit or less than 88bit) three times, the peer network device adjusts its own right tap value of the transmission parameter (for example, adds 1 to the right tap value of the transmission parameter or subtracts 1 from the right tap value of the transmission parameter);
and S724, the local terminal network device and the opposite terminal network device send a second group of data frames according to the preset frame gap negotiation value, the opposite terminal network device judges whether the error rate of the group of data frames is reduced, if the error rate of the group of data frames is reduced, the process is ended, the right tap value of the sending parameter is not continuously adjusted in response to the reduction of the error rate of the group of data frames, and the steps S721, S722, S723 and S724 can be repeated for three times.
By the method, after communication is established, the frame gap length is adjusted, and three main pre-emphasis parameters of a main tap, a left tap and a right tap of the two parties are adjusted in sequence; the method can dynamically adjust the balance parameters of sending, pre-emphasis and receiving among the devices, and 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, which can mutually instruct each other to adjust communication parameters by adjusting a frame gap.
Fig. 9 is a schematic structural diagram of a parameter adjusting apparatus according to an embodiment of the present invention. The parameter adjusting apparatus 900 may be used in the first network device 801 in the communication system shown in fig. 8. As shown in fig. 9, the parameter adjusting apparatus 900 includes: a receiving module 901, a judging module 902 and a sending module 903.
The receiving module 901 is configured to receive a first group of data frames sent by a second network device;
the determining module 902 is configured to determine whether a communication parameter of the second network device needs to be adjusted;
the sending module 903 is configured to send a second group of data frames to the second network device according to a preset frame gap value when the determining module determines that the communication parameter of the second network device needs to be adjusted, where the preset frame gap 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 902 is specifically configured to:
judging whether a pre-emphasis parameter of the second network equipment needs to be adjusted or not according to the error rate of the received first group of data frames; the communication parameters include pre-emphasis parameters;
when the bit error rate is greater than a preset bit error rate threshold value, determining that a 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, wherein the third value is used for indicating the second network device to increase the pre-emphasis parameter of the second network device, and the fourth value is used for indicating the second network device to decrease the pre-emphasis parameter of the second network device;
the pre-emphasis parameters include any one or more of: a main tap; a left tap; and (4) a right tap.
The determining module 902 is specifically configured to determine whether to adjust the transmitting optical power of the second network device according to the received optical power of the first group of data frames; the communication parameter comprises a transmit optical power;
when the receiving optical power of the first group of data frames received by the receiving module is not less than the upper limit of the preset receiving optical power, determining that the sending optical power of the second network equipment needs to be adjusted, and determining that the preset frame gap data is a first numerical value, wherein the first numerical value is used for indicating the second network equipment to reduce the sending optical power;
when the receiving optical power of the first group of data frames received by the receiving module is not greater than a preset receiving optical power lower limit, determining that the sending optical power of the second network equipment needs to be adjusted, and determining that the preset frame gap data is a second numerical value, wherein the second numerical value is used for indicating the second network equipment to increase the sending optical power.
The parameter adjusting apparatus 900 further includes a negotiation module.
The negotiation module is configured to send a third set of data frames to the second network device according to a preset frame gap negotiation value after the first network device and the second network device establish a connection, so as to negotiate with the second network device whether a frame gap parameter adjustment function is supported;
the receiving module is further configured to receive a fourth group of data frames sent by the second network device according to a preset frame gap response value;
and the third group of data frames or the fourth group of data frames comprise the corresponding relation between the communication parameters and the frame gap values.
Further, the parameter adjusting apparatus 900 further includes a detecting module and an adjusting module.
The receiving module is further configured to receive a fifth group of data frames sent by the second network device.
The detection module is configured to detect a frame gap of the fifth group of data frames.
The adjusting module is configured to adjust the communication parameter of the first network device according to the preset frame gap data 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.
Fig. 10 is another schematic structural diagram of a parameter adjustment apparatus according to an embodiment of the present invention. As shown in fig. 10, the parameter adjusting apparatus 1000 includes: a processor 1001, a PHY device 1002, a memory 1003, and a communications port 1004.
The processor 1001, PHY device 1002, memory 1003, and communication port 1004 are interconnected by a bus 1005. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 10, but this is not intended to represent only one bus or type of bus.
The memory 1003 may include a volatile memory (RAM), such as a random-access memory (RAM); the memory may also include a non-volatile memory (english: non-volatile memory), such as a flash memory (english: flash memory), a hard disk (english: hard disk drive, abbreviation: HDD), or a solid-state drive (english: SSD); the memory 1003 may also include a combination of the above types of memories.
The memory 1003 is configured to store a correspondence between the communication parameters and the frame gap values.
Optionally, the memory 1003 is further configured to store the preset sending rule, the data frame, and the like.
The processor 1001 may be a Central Processing Unit (CPU), a Network Processor (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 (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.
Optionally, the memory 1003 may also be used to store program instructions, and the processor 1001 calls the program instructions stored in the memory 1003, and may perform one or more steps of the methods shown in fig. 2 to 7, or an optional implementation thereof, so that the parameter adjusting apparatus implements the function of the first network device in the above method.
It should be noted that the method for adjusting parameters provided by the embodiment of the present invention may be used for optical module communication, and may also be used for communication between network devices connected by using mediums such as copper cables, twisted pairs, and the like. When medium communication such as a copper cable, a twisted pair and the like is used, only pre-emphasis parameters need to be adjusted. When the optical module is used for communication, the pre-emphasis parameters can be adjusted, and the optical power can be adjusted.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, a software module executed by a processor module, or a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
Claims (10)
1. A method of adjusting a parameter, comprising:
the first network equipment establishes connection with second network equipment, and sends a third group of data frames to the second network equipment according to a preset frame gap negotiation value so as to negotiate with the second network equipment whether a frame gap parameter adjustment function is supported or not;
the first network equipment receives a fourth group of data frames sent by the second network equipment according to a preset frame gap response value so as to confirm that the first network equipment supports a frame gap parameter adjusting function;
the third group of data frames or the fourth group of data frames comprise corresponding relations between communication parameters and frame gap values;
the method comprises the steps that a first network device receives a first group of data frames sent by a second network device;
when the first network device determines that the communication parameters of the second network device need 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 preset frame gap value is used to instruct the second network device to adjust the corresponding communication parameters according to the preset frame gap value.
2. The method of claim 1, wherein before the first network device determines that the communication parameters of the second network device need to be adjusted, the method further comprises:
the first network equipment judges whether the pre-emphasis parameter of the second network equipment needs to be adjusted or not according to the received error rate of the first group of data frames; the communication parameters include pre-emphasis parameters;
and when the error rate is greater than a preset error rate threshold value, the first network equipment determines that the pre-emphasis parameter of the second network equipment needs to be adjusted.
3. The method of claim 2, wherein the pre-emphasis parameters comprise a main tap;
the determining, by the first network device, that the pre-emphasis parameter of the second network device needs to be adjusted includes:
the first network device determines that a main tap of the second network device needs to be adjusted, and determines that the preset frame gap value is a third value or a fourth value, wherein the third value is used for indicating the second network device to increase the main tap of the second network device, and the fourth value is used for indicating the second network device to decrease the main tap of the second network device.
4. The method of any of claims 1 to 3, wherein before the first network device determines that the communication parameters of the second network device need to be adjusted, the method further comprises:
the first network equipment judges whether the transmitting optical power of the second network equipment needs to be adjusted or not according to the receiving optical power of the first group of data frames; the communication parameter comprises a transmit optical power;
when the received optical power of the first network device for receiving the first group of data frames is not less than the upper limit of the preset received optical power, the first network device determines that the transmitted optical power of the second network device needs to be adjusted, and determines that the preset frame gap value is a first value, wherein the first value is used for indicating the second network device to reduce the transmitted optical power;
when the received optical power of the first network device for receiving the first group of data frames is not greater than a preset received optical power lower limit, the first network device determines that the transmitted optical power of the second network device needs to be adjusted, and determines that the preset frame gap value is a second value, wherein the second value is used for indicating the second network device to increase the transmitted optical power.
5. A method of adjusting a parameter, comprising:
the method comprises the steps that a first network device and a second network device are connected, and 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 negotiate with the second network device whether a frame gap parameter adjustment function is supported or not;
the first network equipment receives a third group of data frames sent by the second network equipment according to a preset frame gap response value so as to confirm that the first network equipment supports a frame gap parameter adjusting function;
the second group of data frames or the third group of data frames comprise corresponding relations between communication parameters and frame gap values;
the first network equipment receives a first group of data frames sent by the second network equipment;
the first network device detecting a frame gap of the first group of data frames;
and when the bit number of the frame gap is a preset frame gap value and meets a preset condition, the first network equipment adjusts the communication parameters of the first network equipment according to the preset frame gap value.
6. The method according to claim 5, wherein the preset conditions include:
setting the preset frame gap value once or for multiple times;
or, the preset frame gap value is continuously obtained for multiple times.
7. A parameter adjusting apparatus, configured in a first network device, the parameter adjusting apparatus comprising:
the negotiation module is used for sending a third group of data frames to the second network equipment according to a preset frame gap negotiation value after the first network equipment and the second network equipment are connected so as to negotiate with the second network equipment whether a frame gap parameter adjustment function is supported or not;
the receiving module is further configured to receive a fourth group of data frames 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 comprise corresponding relations between communication parameters and frame gap values;
the receiving module is further used for receiving a first group of data frames sent by the second network equipment;
the judging module is used for judging whether the communication parameters of the second network equipment need to be adjusted or not;
a sending module, configured to send a second group of data frames to the second network device according to a preset frame gap value when the determining module determines that the communication parameter of the second network device needs to be adjusted, where the preset frame gap value is used to instruct the second network device to adjust the corresponding communication parameter according to the preset frame gap value;
and the adjusting module is used for synchronously adjusting the communication parameters corresponding to the preset frame gap values.
8. The apparatus of claim 7, wherein the determining module is specifically configured to:
judging whether a pre-emphasis parameter of the second network equipment needs to be adjusted or not according to the error rate of the received first group of data frames; the communication parameters include pre-emphasis parameters;
when the bit error rate is greater than a preset bit error rate threshold value, determining that a 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, wherein the third value is used for indicating the second network device to increase the pre-emphasis parameter of the second network device, and the fourth value is used for indicating the second network device to decrease the pre-emphasis parameter of the second network device;
the pre-emphasis parameters include any one or more of:
a main tap;
a left tap;
and (4) a right tap.
9. The apparatus according to claim 7 or 8, wherein the determining module is specifically configured to:
judging whether the transmitting optical power of the second network equipment needs to be adjusted or not according to the receiving optical power of the first group of data frames; the communication parameter comprises a transmit optical power;
when the receiving optical power of the first group of data frames received by the receiving module is not less than the upper limit of the preset receiving optical power, determining that the sending optical power of the second network equipment needs to be adjusted, and determining that the preset frame gap value is a first value, wherein the first value is used for indicating the second network equipment to reduce the sending optical power;
when the receiving optical power of the first group of data frames received by the receiving module is not greater than a preset receiving optical power lower limit, determining that the sending optical power of the second network equipment needs to be adjusted, and determining that the preset frame gap value is a second value, where the second value is used to instruct the second network equipment to increase the sending optical power.
10. The apparatus of any one of claims 7 to 8, further comprising a detection module;
the receiving module is further configured to receive a fifth group of data frames sent by the second network device;
the detection module is used for detecting a frame gap of the fifth group of data frames;
the adjusting module is configured to adjust the communication parameter of the first network device according to the preset frame gap value 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.
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| US11043154B1 (en) | 2019-12-02 | 2021-06-22 | Tcl China Star Optoelectronics Technology Co., Ltd. | Signal processing method for display panel and device using same |
| CN110930910B (en) * | 2019-12-02 | 2021-07-06 | Tcl华星光电技术有限公司 | Method and device for processing signals in display panel |
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| CN101399980A (en) * | 2007-09-26 | 2009-04-01 | 华为技术有限公司 | Stream media service implementing method, system, policy and control server |
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| EP1933509A1 (en) * | 2005-10-03 | 2008-06-18 | Matsushita Electric Industrial Co., Ltd. | Communication apparatus |
| WO2010079532A1 (en) * | 2009-01-07 | 2010-07-15 | 富士通株式会社 | Wireless communication method in wireless communication system, wireless communication system, base station, and mobile station |
| US8879585B2 (en) * | 2010-05-13 | 2014-11-04 | Mediatek Inc. | Frame timing controller and frame timing control method for triggering at least receiver in mobile station to start receiving transmitted information of base station by referring to at least frame pointer |
| CN104427602B (en) * | 2013-09-03 | 2018-10-09 | 华为技术有限公司 | Poewr control method and device |
| CN106549726B (en) * | 2015-09-18 | 2021-02-23 | 华为技术有限公司 | Data transmission method, base station and terminal equipment |
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| CN101201807A (en) * | 2006-12-12 | 2008-06-18 | 富士通株式会社 | Serial transmission system, a method for automatically correcting signal quality of serial transmission system, and port |
| CN101399980A (en) * | 2007-09-26 | 2009-04-01 | 华为技术有限公司 | Stream media service implementing method, system, policy and control server |
| CN103516477A (en) * | 2012-06-29 | 2014-01-15 | 华为技术有限公司 | Data transmission method and device |
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