CN116132329A - Equalizer parameter testing method and device - Google Patents

Equalizer parameter testing method and device Download PDF

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Publication number
CN116132329A
CN116132329A CN202310397462.0A CN202310397462A CN116132329A CN 116132329 A CN116132329 A CN 116132329A CN 202310397462 A CN202310397462 A CN 202310397462A CN 116132329 A CN116132329 A CN 116132329A
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value
test
ith
signal receiving
values
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CN116132329B (en
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韩旗
郭祥浩
刘杰
夏洪锋
蒋兵峰
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Lontium Semiconductor Corp
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Lontium Semiconductor Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • 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
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/203—Details of error rate determination, e.g. BER, FER or WER
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/16—Threshold monitoring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/50—Testing arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Quality & Reliability (AREA)
  • Dc Digital Transmission (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

The application discloses equalizer parameter testing method and device, wherein the method comprises the following steps: in a handshake stage before communication starts, an ith equalizer parameter EQ value in an equalizer compensation range is used for adjusting information received by a signal receiving end through a channel between the signal receiving end and a signal transmitting end to obtain actual information; executing detection operation once every preset time within the test time of the ith EQ value; the detection operation comprises the following steps: comparing the actual information with the initial information to determine the error rate of the channel; if the error rate is greater than the error threshold, stopping the test on the ith EQ value, determining the ith EQ value as an invalid EQ value, and starting the test on the next EQ value; if the error rate is not greater than the error threshold, continuing to execute detection operation every preset time; if the error rate determined by each detection operation is not greater than the error threshold value within the test duration, the ith EQ value is determined as an effective EQ value.

Description

Equalizer parameter testing method and device
Technical Field
The application relates to the technical field of communication testing, in particular to an equalizer parameter testing method and device.
Background
As communication technology advances, the rate of communication transmissions increases. The high-speed signal transmitted from the high-speed signal transmitting Terminal (TX) to the high-speed signal receiving terminal (RX) is greatly attenuated by the wire, the printed circuit board (Printed Circuit Board, PCB) and the physical interface, and the RX compensates for the loss or the introduced interference caused by the wire or the PCB routing by adjusting the Equalizer (EQ). Where EQ value is a generic parameter for equalizer adjustment or compensation loss, an important purpose is for the RX to find an EQ value that is appropriate for the current path during the handshake phase of establishing communication for compensating for loss. The compensation range of the EQ value is generally designed according to the chip process during the design phase of the equalizer.
In the related art, the EQ values in the compensation range are tested one by using a fixed test duration to find the EQ value that is suitable for the current path, but this method needs to test the EQ values in the compensation range by using a fixed test duration, and the required test time is long.
Disclosure of Invention
The embodiment of the application provides an equalizer parameter testing method and device, which can save time required for testing EQ values.
The first aspect of the application provides an equalizer parameter testing method, which comprises the following steps:
in a handshake stage before communication starts, an ith equalizer parameter EQ value in an equalizer compensation range is used for adjusting information received by a signal receiving end through a channel between the signal receiving end and a signal transmitting end to obtain actual information so as to realize the test of the ith EQ value; wherein i is an integer greater than or equal to 1;
executing detection operation every preset time within the test time of the ith EQ value; the detecting operation includes: comparing the actual information with the initial information to determine the error rate of the channel; the test time period is longer than the preset time period, and the initial information is the initial information sent by the signal sending end to the signal receiving end through the channel;
if the error rate is greater than the error threshold, stopping the test on the ith EQ value, determining the ith EQ value as an invalid EQ value, and starting the test on the next EQ value;
if the error rate is not greater than the error threshold, continuing to execute the detection operation once every the preset duration;
And if the error rate determined by each detection operation is not greater than the error code threshold value within the test duration, determining the ith EQ value as an effective EQ value.
Preferably, in the handshake phase before the communication starts, the adjusting the information received by the signal receiving end through the path between the signal receiving end and the signal transmitting end by using the ith equalizer parameter EQ value in the equalizer compensation range to obtain actual information, so as to implement the test of the ith EQ value, including:
in a handshake stage before communication starts, performing a first test according to a forward arrangement sequence of EQ values in an EQ sequence, and performing a second test according to a reverse arrangement sequence of the EQ values in the EQ sequence; the EQ sequence comprises n EQ values in an equalizer compensation range which are arranged according to a preset sequence, wherein n is an integer greater than or equal to 1;
in the first test, the ith in the EQ sequence is used 1 The EQ value is used for adjusting the information received by the signal receiving end through the channel between the signal receiving end and the signal transmitting end to obtain first actual information so as to realize the ith information 1 Testing the EQ values; in the second test, the ith in the EQ sequence is used 2 The EQ value is used for adjusting the information received by the signal receiving end through the channel to obtain second actual information so as to realize the information processing of the signal receiving endIth (i) 2 Testing the EQ values;
and if the bit error rate determined by each detection operation is not greater than the bit error threshold within the test duration, determining the ith EQ value as an effective EQ value further includes:
the ith is taken 1 Determining the EQ values as first boundary values, and ending the first test;
the ith is taken 2 Determining the EQ values as second boundary values, and ending the second test;
determining a final EQ value in the EQ sequence from the first boundary value and the second boundary value; the final EQ value is used to adjust the information received by the signal receiving end through the channel in the communication stage.
Preferably, in the EQ sequence, determining a final EQ value according to the first boundary value and the second boundary value includes:
in the EQ sequence, a median between the first boundary value and the second boundary value is taken as the final EQ value.
Preferably, the preset sequence includes: ascending or descending order.
Preferably, the bit error rate is determined by:
The information received by the signal receiving end through the channel from the test starting time of the ith EQ value to the ending time of the jth preset duration is used as the actual information;
comparing the actual information with the initial information, and determining a j bit error rate corresponding to the j preset duration ending time in the test duration of the i EQ value; wherein j is an integer greater than or equal to 1.
Preferably, in the handshake phase before the communication starts, the adjusting the information received by the signal receiving end through the path between the signal receiving end and the signal transmitting end by using the ith equalizer parameter EQ value in the equalizer compensation range to obtain actual information, so as to implement the test of the ith EQ value, including:
in a handshake stage before communication starts, adjusting information received by a signal receiving end through a channel between the signal receiving end and a signal transmitting end by using the EQ value to obtain actual information, and testing the EQ value to obtain a test result corresponding to the EQ value, wherein the test result is used for representing whether the EQ value is an effective EQ value or an ineffective EQ value;
The method further comprises the steps of:
determining each effective EQ value in the equalizer compensation range according to the test result corresponding to each EQ value in the equalizer compensation range;
and determining a final EQ value according to the effective EQ values, and adjusting information received by the signal receiving end through the channel in a communication stage.
Preferably, the method further comprises:
and when testing all the EQ values in the equalizer compensation range is completed and the valid EQ value is determined to be absent, indicating the signal transmitting end to adjust the driving capability.
A second aspect of the present application provides an equalizer parameter testing apparatus, the apparatus comprising:
an adjusting unit for: in a handshake stage before communication starts, an ith equalizer parameter EQ value in an equalizer compensation range is used for adjusting information received by a signal receiving end through a channel between the signal receiving end and a signal transmitting end to obtain actual information so as to realize the test of the ith EQ value; wherein i is an integer greater than or equal to 1;
a detection unit for: executing detection operation every preset time within the test time of the ith EQ value; the detecting operation includes: comparing the actual information with the initial information to determine the error rate of the channel; the test time period is longer than the preset time period, and the initial information is the initial information sent by the signal sending end to the signal receiving end through the channel;
A result determination unit configured to: if the error rate is greater than the error threshold, stopping the test on the ith EQ value, determining the ith EQ value as an invalid EQ value, and starting the test on the next EQ value;
the detection unit is also used for: if the error rate is not greater than the error threshold, continuing to execute the detection operation once every the preset duration;
the result determination unit is further configured to: and if the error rate determined by each detection operation is not greater than the error code threshold value within the test duration, determining the ith EQ value as an effective EQ value.
Preferably, the adjusting unit is specifically configured to:
in a handshake stage before communication starts, performing a first test according to a forward arrangement sequence of EQ values in an EQ sequence, and performing a second test according to a reverse arrangement sequence of the EQ values in the EQ sequence; the EQ sequence comprises n EQ values in an equalizer compensation range which are arranged according to a preset sequence, wherein n is an integer greater than or equal to 1;
in the first test, the ith in the EQ sequence is used 1 The EQ value is used for adjusting the information received by the signal receiving end through the channel between the signal receiving end and the signal transmitting end to obtain first actual information so as to realize the ith information 1 Testing the EQ values; in the second test, the ith in the EQ sequence is used 2 An EQ value, for adjusting the information received by the signal receiving end through the channel to obtain second actual information, so as to realize the ith information 2 Testing the EQ values;
the result determination unit is further configured to:
the ith is taken 1 Determining the EQ values as first boundary values, and ending the first test;
the ith is taken 2 Determining the EQ values as second boundary values, and ending the second test;
determining a final EQ value in the EQ sequence from the first boundary value and the second boundary value; the final EQ value is used to adjust the information received by the signal receiving end through the channel in the communication stage.
Preferably, the result determination unit is specifically configured to:
in the EQ sequence, a median between the first boundary value and the second boundary value is taken as the final EQ value.
From the above technical scheme, the application has the following advantages: according to the method, through the handshake stage before communication starts, the information received by a signal receiving end through a channel between the signal receiving end and a signal transmitting end is regulated by using an ith equalizer parameter EQ value in an equalizer compensation range, so that actual information is obtained, and the test of the ith EQ value is realized; and in the test duration of the ith EQ value, executing detection operation once every preset duration: comparing the actual information with initial information sent by a signal sending end to a signal receiving end through a channel, and determining the error rate of the channel; if the error rate is greater than the error threshold, stopping the test of the ith EQ value, and determining the ith EQ value as an invalid EQ value; the invalid EQ value does not need to pass through the complete test time, so that the test time of the invalid EQ value is saved, and the test time of all EQ values in the compensation range is further saved; if the error rate is not greater than the error threshold, continuing to execute detection operation every preset time; when the test duration is over and the error rate determined by each detection operation is not greater than the error threshold, determining the ith EQ value as an effective EQ value; the effective EQ value is required to be verified in the whole test duration, detection is carried out in the test duration, and the effective EQ value can be determined when the error rate larger than the error threshold value does not appear, so that the effectiveness of the EQ value is ensured, and the communication quality in the communication stage is improved.
Drawings
Fig. 1 is a flowchart of an equalizer parameter testing method provided in an embodiment of the present application;
fig. 2 is a flowchart of a method for calculating an error rate according to an embodiment of the present application;
FIG. 3 is a flowchart of an equalizer parameter testing method according to another embodiment of the present disclosure;
fig. 4 is a schematic diagram of an equalizer parameter testing apparatus according to an embodiment of the present application;
fig. 5 is a schematic diagram of an equalizer parameter testing system according to an embodiment of the present application.
Detailed Description
Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present application are shown in the drawings, it is to be understood that the present application may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and examples of the present application are for illustrative purposes only and are not intended to limit the scope of the present application.
Referring to fig. 1, an embodiment of the present application provides a method for testing equalizer parameters, which specifically includes the following steps:
step 101: in a handshake stage before communication starts, the information received by a signal receiving end through a channel between the signal receiving end and a signal transmitting end is regulated by using an ith equalizer parameter EQ value in an equalizer compensation range, so as to obtain actual information, and realize the test of the ith EQ value.
Wherein i is an integer of 1 or more. In the process of high-speed signal transmission, a digital display interface (DisplayPort, DP) or a high-definition multimedia interface (High Definition Multimedia Interface, HDMI) has a handshake phase for a period of time before a high-speed signal is actually transmitted, and in the handshake phase, a signal receiving end needs to find an EQ value suitable for a current channel from EQ values in a compensation range for compensating loss at the signal receiving end. The EQ value is a generic parameter when the equalizer adjusts or compensates for the loss. For example, the equalizer may use current amplification and feedback to compensate for the loss, different amplification factors may result in different gains and bandwidths of the equalizer, and the EQ value is a combination of the gain and bandwidth. In the equalizer design stage, a compensation range is designed according to the current chip process, for example, the compensation range is 0 dB-20 dB, and the 0 dB-20 dB is equally divided into 16 groups of EQ values, so that the finer the compensation range is, the more EQ values to be tested in the handshake stage are, and the longer the corresponding test time is.
Step 102: and in the test duration of the ith EQ value, executing detection operation once every preset duration.
Wherein, the test time length is longer than the preset time length, and the detection operation comprises: and comparing the actual information with initial information to determine the error rate of the channel, wherein the initial information is sent by the signal sending end to the signal receiving end through the channel.
The actual information used in determining the error rate includes: the signal receiving end receives the actual information through the channel within each preset duration, or receives the actual information through the channel from the test starting time of the ith EQ value to the current preset duration ending time; corresponding to the foregoing actual information, the initial information used in determining the error rate includes: and the signal transmitting end transmits initial information to the signal receiving end through the channel within each preset duration, or transmits initial information to the signal receiving end through the channel from the test starting time of the ith EQ value to the current preset duration ending time.
In one possible implementation, the bit error rate may be calculated as follows:
step 201: and taking the information received by the signal receiving end through the channel from the test starting time of the ith EQ value to the ending time of the jth preset duration as actual information.
Wherein j is an integer of 1 or more. For example, when j=2, the actual information is all the information received by the signal receiving end from the test start time of the ith EQ value, through two preset durations, to the end time of the 2 nd preset duration through the channel.
Step 202: and comparing the actual information with the initial information, and determining the j bit error rate corresponding to the j preset duration ending time in the test duration of the i EQ value.
For example, when j=2, the initial information is all the information sent by the signal sending end to the signal receiving end through the channel from the test start time of the ith EQ value, through two preset durations, to the end time of the 2 nd preset duration. And comparing the initial information with the actual information to obtain the number of error codes between the initial information and the actual information, and comparing the number of error codes with the code length in the initial information to obtain the j error rate. The influence of randomness in the test of the EQ value on the test result is reduced, and the integrity of the evaluation of the EQ value is improved.
In the handshake stage, when the EQ value is tested, the signal transmitting end informs the signal receiving end of initial information sent by the signal transmitting end to the signal receiving end in a mode other than the channel, so that the signal receiving end performs detection operation based on the initial information.
Step 103: if the bit error rate is greater than the bit error threshold, the test for the ith EQ value is stopped, the ith EQ value is determined to be an invalid EQ value, and the test for the next EQ value is started.
When the bit error rate obtained by a certain detection operation is greater than the bit error threshold value within the test duration of the ith EQ value, the adjustment capability of the ith EQ value is considered unsuitable for the current channel, namely, when the ith EQ value is used for adjusting the information received by the signal receiving end in the communication stage, the problems of irregular image screen or flickering and the like can exist, then the ith EQ value can be determined to be an invalid EQ value, the test of the ith EQ value is stopped, and the test of the next EQ value is started; the aforementioned next EQ value may be any EQ value that has not been tested in the compensation range.
It should be noted that, the error code threshold may be set according to the requirement of the communication stage on the communication quality, so that the implementation of the embodiment of the present application is not affected, and the present application does not limit this.
Step 104: if the error rate is not greater than the error threshold, the detection operation is continuously executed every preset time.
And when the error rate obtained by the detection operation is not greater than the error code threshold value within the test duration of the ith EQ value, continuing to execute the detection operation every other preset duration until the error rate obtained by the detection operation is greater than the error code threshold value at a certain time, or ending the test duration of the ith EQ value.
Step 105: if the error rate determined by each detection operation is not greater than the error threshold value within the test duration, the ith EQ value is determined as an effective EQ value.
Further, when testing of all EQ values within the equalizer compensation range is completed and it is determined that there is no valid EQ value, the signal transmitting end is instructed to adjust the driving capability.
The driving capability of the signal transmitting end can be realized by adjusting signal amplitude (Swing) and Pre-emphasis (Pre-emphasis).
According to the embodiment of the application, through the handshake stage before communication starts, the information received by the signal receiving end through a channel between the signal receiving end and the signal transmitting end is regulated by using the ith equalizer parameter EQ value in the equalizer compensation range, so that actual information is obtained, and the test of the ith EQ value is realized; and in the test duration of the ith EQ value, executing detection operation once every preset duration: comparing the actual information with initial information sent by a signal sending end to a signal receiving end through a channel, and determining the error rate of the channel; if the error rate is greater than the error threshold, stopping the test of the ith EQ value, and determining the ith EQ value as an invalid EQ value; the invalid EQ value does not need to pass through the complete test time, so that the test time of the invalid EQ value is saved, and the test time of all EQ values in the compensation range is further saved; if the error rate is not greater than the error threshold, continuing to execute detection operation every preset time; when the test duration is over and the error rate determined by each detection operation is not greater than the error threshold, determining the ith EQ value as an effective EQ value; the effective EQ value is required to be verified in the whole test duration, detection is carried out in the test duration, and the effective EQ value can be determined when the error rate larger than the error threshold value does not appear, so that the effectiveness of the EQ value is ensured, and the communication quality in the communication stage is improved.
Further, the method shown in fig. 1 may further include the following steps:
step 106: the final EQ value is determined from the valid EQ value for adjusting the information received by the signal receiving end via the path during the communication phase.
In one possible implementation manner, through the steps 101 to 105, each EQ value in the equalizer compensation range may be tested one by one, so as to obtain a test result corresponding to each EQ value. That is, in the handshake stage, each EQ value in the compensation range of the equalizer is used to adjust the information received by the signal receiving end through the channel between the signal receiving end and the signal transmitting end, so as to obtain the actual information, and the test of the EQ value is implemented, so as to obtain the test result corresponding to the EQ value, where the test result is used to characterize that the EQ value is an effective EQ value or an ineffective EQ value. And further, according to the test results corresponding to the EQ values in the equalizer compensation range, determining the effective EQ values in the equalizer compensation range. And determining a final EQ value according to each effective EQ value, and adjusting information received by the signal receiving end through the channel in a communication stage.
Any effective EQ value determined by the test can be used for adjusting the information received by the signal receiving end through the channel in the communication stage, so that the communication quality is improved.
In another possible implementation, the EQ values in the equalizer compensation range may be arranged in a preset order, and then the EQ values are tested in order to determine a boundary value of the valid EQ values, and the EQ values in the boundary range are determined as valid EQ values, and a final EQ value is determined therefrom.
Referring to fig. 3, another embodiment of the present application provides a method for testing equalizer parameters, which specifically includes the following steps:
step 301: in a handshake stage before communication starts, a first test is performed according to the forward arrangement order of EQ values in an EQ sequence, and a second test is performed according to the reverse arrangement order of EQ values in the EQ sequence.
The EQ sequence comprises n EQ values in an equalizer compensation range which are arranged according to a preset sequence, wherein n is an integer greater than or equal to 1; the forward direction arrangement sequence is the sequence from the 1 st EQ value to the nth EQ value in the EQ sequence; the reverse arrangement is in the order from the nth EQ value to the 1 st EQ value in the EQ sequence.
It should be noted that, the preset sequence used when the EQ sequences are arranged may be ascending, that is, the sequence of the EQ values from small to large; the decreasing order, i.e. the order of the EQ values from large to small, may also be used without affecting the implementation of the embodiments of the present application.
The EQ values are arranged according to the preset sequence, so that the boundary values of the effective EQ values can be searched conveniently, the EQ values between the boundary values do not need to be further tested, and the test time for the EQ sequence is further saved.
Step 302: in the first test, the ith in the EQ sequence is used 1 EQ values, which are used for adjusting information received by a signal receiving end through a channel between the signal receiving end and a signal transmitting end to obtain first actual information so as to realize the ith information 1 Testing the EQ values; in the second test, the ith in the EQ sequence was used 2 The EQ value is used for adjusting the information received by the signal receiving end through the channel to obtain second actual information so as to realize the ith information 2 Testing of the EQ values.
Wherein, in the first test, when the test is to the ith 1 After the test of the EQ value is completed, if the ith is determined 1 If the EQ value is the valid EQ value, then the following step 303 is executed; if the ith is determined 1 The EQ value is an invalid EQ value, and then begins for the ith 1 +1 EQ values were tested.
Accordingly, in the second test, when the ith test 2 After the test of the EQ value is completed, if the ith is determined 2 If the EQ value is the valid EQ value, the following step 303 is executed, if it is determined that the ith 2 The EQ value is an invalid EQ value, and then begins for the ith 2 -1 EQ value was tested.
Specifically, the specific test procedure for each EQ value may be described with reference to steps 102 to 105 in fig. 1, and will not be described herein.
Step 303: when the ith 1 After the EQ values are determined to be valid EQ values, the ith will be 1 The EQ values are determined as first boundary values and the first test is ended.
In the first test process, the test purpose is to find the first effective EQ value in the forward arrangement sequence, determine the first effective EQ value as the first boundary value, and end the first test after the first boundary value is determined, so that the test duration of the subsequent effective EQ value is saved.
Step 304: when the ith 2 After the EQ values are determined to be valid EQ values, the ith will be 2 E (E)And determining the Q value as a second boundary value, and ending the second test.
In the second test process, the test purpose is to find the first effective EQ value in the reverse arrangement sequence, determine the first effective EQ value as a second boundary value, and end the second test after the second boundary value is determined, so that the test duration of the subsequent effective EQ values is saved.
It should be noted that, the first test may be performed before the second test or may be performed after the second test, and both may be performed simultaneously, which does not affect the implementation of the embodiments of the present application.
Step 305: in the EQ sequence, a final EQ value is determined according to the first boundary value and the second boundary value, for adjusting information received by the signal receiving end through the channel in the communication phase.
After the first boundary value and the second boundary value are determined from the EQ sequence, all EQ values between the first boundary value and the second boundary value can be directly determined as effective EQ values, so that any effective EQ value can be determined as a final EQ value, and information received by the signal receiving end through the channel is regulated in a communication stage.
By testing the EQ values of the EQ sequences arranged according to the preset sequence, the boundary values of the EQ values in the sequences are found, so that all the EQ values between the boundary values can be directly determined as effective EQ values, the test duration of the effective EQ values is further saved, the test time of the whole EQ sequence is shortened, and the test efficiency is improved.
In one possible implementation, the median between the first boundary value and the second boundary value may be used as the final EQ value for adjusting the information received by the signal receiving end through the path during the communication phase.
When the number of valid EQ values is odd, the median between the first and second boundary values in the EQ sequence may be used as the final EQ value; the number of valid EQ values is even, and one may be selected from the two middle EQ values as the final EQ value.
By selecting the EQ value farthest from the two boundary values in the EQ sequence as the final EQ value, the communication quality in the communication phase is further improved.
Referring to fig. 4, the present application provides an equalizer parameter testing apparatus, including: an adjusting unit 401, a detecting unit 402, and a result determining unit 403.
An adjusting unit 401, configured to adjust information received by the signal receiving end through a path between the signal receiving end and the signal transmitting end by using an ith equalizer parameter EQ value in an equalizer compensation range in a handshake phase before communication starts, so as to obtain actual information, so as to implement a test for the ith EQ value; wherein i is an integer of 1 or more.
A detecting unit 402, configured to perform a detecting operation every a preset period of time within a test period of the ith EQ value; the detection operation comprises the following steps: comparing the actual information with the initial information to determine the error rate of the channel; the testing time period is longer than the preset time period, and the initial information is the initial information sent by the signal sending end to the signal receiving end through the access.
The result determining unit 403 is configured to stop the test for the ith EQ value, determine the ith EQ value as an invalid EQ value, and start the test for the next EQ value if the bit error rate is greater than the bit error threshold.
The detection unit 402 is further configured to: if the error rate is not greater than the error threshold, the detection operation is continuously executed every preset time.
The result determination unit 403 is further configured to: if the error rate determined by each detection operation is not greater than the error threshold value within the test duration, the ith EQ value is determined as an effective EQ value.
Further, the adjusting unit 401 is specifically configured to:
in a handshake stage before communication starts, performing a first test according to a forward arrangement sequence of EQ values in an EQ sequence, and performing a second test according to a reverse arrangement sequence of EQ values in the EQ sequence; the EQ sequence comprises n EQ values in an equalizer compensation range which are arranged according to a preset sequence, wherein n is an integer greater than or equal to 1;
in the first test, the ith in the EQ sequence is used 1 The EQ value is used for adjusting the information received by the signal receiving end through a channel between the signal receiving end and the signal transmitting end to obtain first actual information,to achieve for the ith 1 Testing the EQ values; in the second test, the ith in the EQ sequence was used 2 EQ values, which are used for adjusting the information received by the signal receiving end through the channel to obtain second actual information so as to realize the ith information 2 Testing of the EQ values.
The result determination unit is further configured to:
will be the ith 1 The EQ values are determined to be first boundary values, and the first test is ended;
will be the ith 2 The EQ values are determined to be second boundary values, and the second test is ended;
In the EQ sequence, a final EQ value is determined according to the first boundary value and the second boundary value, for adjusting information received by the signal receiving end through the channel in the communication phase.
Further, the result determination unit 403 is specifically configured to:
in the EQ sequence, the median between the first and second boundary values is taken as the final EQ value.
Further, the detection unit 402 is specifically configured to:
the method comprises the steps that information received by a signal receiving end through a channel from the test starting time of an ith EQ value to the ending time of a jth preset duration is used as actual information;
comparing the actual information with the initial information, and determining a j bit error rate corresponding to the ending time of the j preset duration in the test duration of the i EQ value; wherein j is an integer of 1 or more.
Further, the adjusting unit 401 is specifically configured to:
in the handshake stage, for each EQ value in the equalizer compensation range, adjusting information received by a signal receiving end through a channel between the signal receiving end and a signal transmitting end by using the EQ value to obtain actual information, and realizing test of the EQ value to obtain a test result corresponding to the EQ value, wherein the test result is used for representing whether the EQ value is an effective EQ value or an ineffective EQ value;
The result determination unit 403 is further configured to:
determining each effective EQ value in the equalizer compensation range according to the test result corresponding to each EQ value in the equalizer compensation range;
and determining a final EQ value according to each effective EQ value, and adjusting information received by a signal receiving end through a channel in a communication stage.
Further, the adjusting unit 401 is further configured to:
and when testing all the EQ values in the equalizer compensation range is completed and no valid EQ value is determined, the signal transmitting end is instructed to adjust the driving capability.
Referring to fig. 5, an embodiment of the present application provides an equalizer parameter testing system, in a handshake stage before communication starts, a signal transmitting end sends a signal stream carrying initial information to a signal receiving end, and the signal receiving end adjusts the received information through an equalizer to obtain actual information; comparing the actual information with the initial information to obtain the adjusting effect of the current equalizer parameter EQ value; when testing all EQ values in the compensation range of the equalizer is completed and no effective EQ value is determined, the signal receiving end sends feedback information to the signal sending end through the equalizer, and instructs the signal sending end to adjust the driving capability of the signal sending end through adjusting the signal amplitude or pre-emphasis.
The device provided by the application adjusts the information received by the signal receiving end through the channel between the signal receiving end and the signal transmitting end by using the ith equalizer parameter EQ value in the equalizer compensation range in the handshake stage before communication starts, so as to obtain actual information, and realize the test of the ith EQ value; and in the test duration of the ith EQ value, executing detection operation once every preset duration: comparing the actual information with initial information sent by a signal sending end to a signal receiving end through a channel, and determining the error rate of the channel; if the error rate is greater than the error threshold, stopping the test of the ith EQ value, and determining the ith EQ value as an invalid EQ value; the invalid EQ value does not need to pass through the complete test time, so that the test time of the invalid EQ value is saved, and the test time of all EQ values in the compensation range is further saved; if the error rate is not greater than the error threshold, continuing to execute detection operation every preset time; when the test duration is over and the error rate determined by each detection operation is not greater than the error threshold, determining the ith EQ value as an effective EQ value; the effective EQ value is required to be verified in the whole test duration, detection is carried out in the test duration, and the effective EQ value can be determined when the error rate larger than the error threshold value does not appear, so that the effectiveness of the EQ value is ensured, and the communication quality in the communication stage is improved.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
The names of messages or information interacted between the various devices in the embodiments of the present application are for illustrative purposes only and are not intended to limit the scope of such messages or information.
Although operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order. In certain circumstances, multitasking and parallel processing may be advantageous.
It should be understood that the various steps recited in the method embodiments of the present application may be performed in a different order and/or performed in parallel. Furthermore, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the present application is not limited in this respect.
Computer program code for carrying out operations of the present application may be written in one or more programming languages, including, but not limited to, an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media in which a computer program can be stored.
The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. A method for testing equalizer parameters, the method comprising:
in a handshake stage before communication starts, an ith equalizer parameter EQ value in an equalizer compensation range is used for adjusting information received by a signal receiving end through a channel between the signal receiving end and a signal transmitting end to obtain actual information so as to realize the test of the ith EQ value; wherein i is an integer greater than or equal to 1;
executing detection operation every preset time within the test time of the ith EQ value; the detecting operation includes: comparing the actual information with the initial information to determine the error rate of the channel; the test time period is longer than the preset time period, and the initial information is the initial information sent by the signal sending end to the signal receiving end through the channel;
if the error rate is greater than the error threshold, stopping the test on the ith EQ value, determining the ith EQ value as an invalid EQ value, and starting the test on the next EQ value;
if the error rate is not greater than the error threshold, continuing to execute the detection operation once every the preset duration;
And if the error rate determined by each detection operation is not greater than the error code threshold value within the test duration, determining the ith EQ value as an effective EQ value.
2. The method of claim 1, wherein the step of adjusting information received by the signal receiving end through a path between the signal receiving end and the signal transmitting end by using the value of the ith equalizer parameter EQ within the equalizer compensation range in the handshake phase before the communication starts to obtain actual information, so as to implement the test for the ith EQ value, includes:
in a handshake stage before communication starts, performing a first test according to a forward arrangement sequence of EQ values in an EQ sequence, and performing a second test according to a reverse arrangement sequence of the EQ values in the EQ sequence; the EQ sequence comprises n EQ values in an equalizer compensation range which are arranged according to a preset sequence, wherein n is an integer greater than or equal to 1;
in the first test, the ith in the EQ sequence is used 1 The EQ value is used for adjusting the information received by the signal receiving end through the channel between the signal receiving end and the signal transmitting end to obtain first actual information so as to realize the ith information 1 Testing the EQ values; in the second test, the ith in the EQ sequence is used 2 An EQ value, for adjusting the information received by the signal receiving end through the channel to obtain second actual information, so as to realize the ith information 2 Testing the EQ values;
and if the bit error rate determined by each detection operation is not greater than the bit error threshold within the test duration, determining the ith EQ value as an effective EQ value further includes:
the ith is taken 1 Determining the EQ values as first boundary values, and ending the first test;
the ith is taken 2 Determining the EQ values as second boundary values, and ending the second test;
determining a final EQ value in the EQ sequence from the first boundary value and the second boundary value; the final EQ value is used to adjust the information received by the signal receiving end through the channel in the communication stage.
3. The method of claim 2, wherein the determining a final EQ value in the EQ sequence from the first boundary value and the second boundary value comprises:
in the EQ sequence, a median between the first boundary value and the second boundary value is taken as the final EQ value.
4. The method of claim 2, wherein the predetermined sequence comprises: ascending or descending order.
5. The method of claim 1, wherein the bit error rate is determined by:
the information received by the signal receiving end through the channel from the test starting time of the ith EQ value to the ending time of the jth preset duration is used as the actual information;
comparing the actual information with the initial information, and determining a j bit error rate corresponding to the j preset duration ending time in the test duration of the i EQ value; wherein j is an integer greater than or equal to 1.
6. The method of claim 1, wherein the step of adjusting information received by the signal receiving end through a path between the signal receiving end and the signal transmitting end by using the value of the ith equalizer parameter EQ within the equalizer compensation range in the handshake phase before the communication starts to obtain actual information, so as to implement the test for the ith EQ value, includes:
in a handshake stage before communication starts, adjusting information received by a signal receiving end through a channel between the signal receiving end and a signal transmitting end by using the EQ value to obtain actual information, and testing the EQ value to obtain a test result corresponding to the EQ value, wherein the test result is used for representing whether the EQ value is an effective EQ value or an ineffective EQ value;
The method further comprises the steps of:
determining each effective EQ value in the equalizer compensation range according to the test result corresponding to each EQ value in the equalizer compensation range;
and determining a final EQ value according to the effective EQ values, and adjusting information received by the signal receiving end through the channel in a communication stage.
7. The method according to claim 1, wherein the method further comprises:
and when testing all the EQ values in the equalizer compensation range is completed and the valid EQ value is determined to be absent, indicating the signal transmitting end to adjust the driving capability.
8. An equalizer parameter testing apparatus, the apparatus comprising:
an adjusting unit for: in a handshake stage before communication starts, an ith equalizer parameter EQ value in an equalizer compensation range is used for adjusting information received by a signal receiving end through a channel between the signal receiving end and a signal transmitting end to obtain actual information so as to realize the test of the ith EQ value; wherein i is an integer greater than or equal to 1;
a detection unit for: executing detection operation every preset time within the test time of the ith EQ value; the detecting operation includes: comparing the actual information with the initial information to determine the error rate of the channel; the test time period is longer than the preset time period, and the initial information is the initial information sent by the signal sending end to the signal receiving end through the channel;
A result determination unit configured to: if the error rate is greater than the error threshold, stopping the test on the ith EQ value, determining the ith EQ value as an invalid EQ value, and starting the test on the next EQ value;
the detection unit is also used for: if the error rate is not greater than the error threshold, continuing to execute the detection operation once every the preset duration;
the result determination unit is further configured to: and if the error rate determined by each detection operation is not greater than the error code threshold value within the test duration, determining the ith EQ value as an effective EQ value.
9. The device according to claim 8, wherein the adjustment unit is specifically configured to:
in a handshake stage before communication starts, performing a first test according to a forward arrangement sequence of EQ values in an EQ sequence, and performing a second test according to a reverse arrangement sequence of the EQ values in the EQ sequence; the EQ sequence comprises n EQ values in an equalizer compensation range which are arranged according to a preset sequence, wherein n is an integer greater than or equal to 1;
in the first test, the ith in the EQ sequence is used 1 The EQ value is used for adjusting the information received by the signal receiving end through the channel between the signal receiving end and the signal transmitting end to obtain first actual information so as to realize the ith information 1 Testing the EQ values; in the second test, the ith in the EQ sequence is used 2 An EQ value, for adjusting the information received by the signal receiving end through the channel to obtain second actual information, so as to realize the ith information 2 Testing the EQ values;
the result determination unit is further configured to:
the ith is taken 1 Determining the EQ values as first boundary values, and ending the first test;
the ith is taken 2 Determining the EQ values as second boundary values, and ending the second test;
determining a final EQ value in the EQ sequence from the first boundary value and the second boundary value; the final EQ value is used to adjust the information received by the signal receiving end through the channel in the communication stage.
10. The apparatus according to claim 9, wherein the result determination unit is specifically configured to:
in the EQ sequence, a median between the first boundary value and the second boundary value is taken as the final EQ value.
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