WO2021081889A1

WO2021081889A1 - Method for determining frame error ratio and related device

Info

Publication number: WO2021081889A1
Application number: PCT/CN2019/114695
Authority: WO
Inventors: 高林; 李文俊; 郭湛
Original assignee: 华为技术有限公司
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2021-05-06
Also published as: CN114586300A

Abstract

Embodiments of the present application provide a method for determining a frame error ratio and a related device. In the technical solution, a sender sends N channel measurement frames to a receiver; the receiver determines, according to the reception states of the channel measurement frames, a channel quality parameter statistical value corresponding to each channel measurement frame, and feeds same back to the sender; then the sender receives the channel quality parameter statistical value. The sender can determine weights corresponding to the channel measurement frames according to the channel quality parameter statistical values. Finally, the sender determines the frame error ratio between the sender and the receiver according to the weights and the number N of the channel measurement frames. In the embodiments of the present application, different channel quality parameter statistical values can be obtained for different frame loss reasons, and a sender can determine weights corresponding to the frame loss reasons according to the channel quality parameter statistical values. The frame error ratio calculated by the sender according to the weights can accurately reflect the link state, and the effect will be better when the sender performs optimization adjustment.

Description

Method for determining frame error rate and related device

Technical field

The embodiments of the present application relate to the field of communications, and in particular, to a method for determining a frame error rate and related devices.

Background technique

With the development of communication technology, network communication is widely used in terminal equipment. The terminal device is connected with other terminal devices or servers through network communication to realize information transmission. Wireless local area networks (WLAN) frees various terminal devices from the shackles of cables and facilitates people's lives.

Compared with a stable and reliable wired environment, the time-varying characteristics of wireless channels require that various transceiver parameters be automatically adjusted to adapt to the channel environment, thereby ensuring quality of service (QoS). In the current automatic adjustment scheme, the sender generally automatically adjusts in accordance with the IEEE 802.11 protocol, a wireless network standard of the Institute of Electrical and Electronics Engineers (IEEE). For example, in the rate adaptation algorithm (autorate), the sending end sends detection frames to the receiving end by using different modulation and coding schemes (MCS). After receiving the detection frame, the receiving end sends the information of the receiving end to the sending end for the sending end to adjust various sending parameters.

However, in the rate adaptation algorithm, when the sender performs frame error ratio (FER) statistics based on the information of the receiver, the sender does not analyze the cause of the frame loss, and the statistically obtained frame error rate cannot accurately reflect the link status. . For example, when most of the frames sent from the sender to the receiver are lost due to interference, reducing the link rate cannot solve the problem of frame loss due to interference, but the frame error rate counted by the sender is still high at this time. Optimized measures to reduce the link rate have been taken.

Summary of the invention

The embodiment of the present application provides a method and related device for determining the frame error rate. The sending end can assign the corresponding weight to the channel measurement frame according to different frame loss reasons, and the statistically obtained frame error rate can accurately reflect the link status, and make the error The frame rate statistics are more accurate.

The first aspect of the embodiments of the present application provides a method for determining a frame error rate, which is applied to a wireless local area network, and includes: a sending end sends N channel measurement frames to a receiving end, and the channel measurement frames are used to instruct the receiving end to send N channel measurement frames to the receiving end. The sending end sends the channel quality parameter statistical value corresponding to the channel measurement frame, where N is a positive integer; the sending end receives the channel quality parameter statistical value; the sending end according to the channel quality parameter statistical value The weight corresponding to the channel measurement frame is determined; the sending end determines the frame error rate between the sending end and the receiving end according to the weight and the N.

In the embodiment of this application, the sending end sends N channel measurement frames to the receiving end, and the receiving end determines the channel quality parameter statistical value corresponding to each channel measurement frame according to the reception of the channel measurement frame, and feeds it back to the sending end, and then sends it The terminal receives the statistical value of the channel quality parameter. The sending end may determine the weight corresponding to the channel measurement frame according to the statistical value of the channel quality parameter. Finally, the sending end determines the frame error rate between the sending end and the receiving end according to the weight and the number of channel measurement frames N. In the embodiments of the present application, different frame loss causes can obtain different channel quality parameter statistical values. The sending end can determine the weight corresponding to each frame loss cause according to the channel quality parameter statistical value. For important frame loss reasons, the sending end can Set a higher weight. For irrelevant frame loss reasons, the sender can set a lower weight, and then determine the frame error rate according to the weight and the number of channel measurement frames. The frame error rate calculated by the sending end according to the weight can accurately reflect the link status, and the effect is better when the sending end performs optimization and adjustment. For example, the sender associates the second condition and a lower second weight in advance according to the cause of frame loss such as interference. If the channel quality parameter received by the sender satisfies the second condition, it means that the cause of the frame loss of the channel measurement frame is Interference, the sender determines the second weight corresponding to the channel measurement frame. When calculating the frame error rate, even if there is a large number of frame loss caused by interference, because the second weight is low, the frame error rate can still be low, and the sender will not mistakenly drop the link rate due to the frame loss caused by the interference.

With reference to the first aspect of the embodiments of the present application, in the first implementation of the first aspect of the embodiments of the present application, the channel quality parameter statistical value includes the maximum value, the minimum value, and the average value of the channel quality parameter; The sending end determining the weight corresponding to the channel measurement frame according to the channel quality parameter statistical value includes: the sending end obtains a first difference value, where the first difference value is the average value minus the minimum value; The sending end obtains a second difference value, where the second difference value is the maximum value minus the average value; the sending end obtains a comprehensive difference value, and the comprehensive difference value is the first difference value and the sum The absolute value of the difference between the second difference; if the comprehensive difference is less than a first preset threshold, the sending end determines the first weight corresponding to the channel measurement frame.

In combination with the first aspect of the embodiments of the present application and the first implementation manner of the embodiments of the present application, in the second implementation manner of the first aspect of the embodiments of the present application, the sending end sends N channel measurements to the receiving end. Before the frame, the method further includes: the sending end obtains the first weight, where the first weight is used to indicate that the cause of the frame loss is attenuation; and the sending end obtains the first weight corresponding to the cause of the frame loss as the attenuation. A condition, the first condition includes that the comprehensive difference is less than the first preset threshold; the sending end establishes an association relationship in which the first condition, the first weight, and the cause of frame loss are attenuation .

With reference to the first aspect of the embodiments of the present application and any one of the first to second implementation manners of the embodiments of the present application, in the third implementation manner of the first aspect of the embodiments of the present application, the sending After obtaining the integrated difference at the terminal, the method further includes: if the integrated difference is not less than the first preset threshold, and the integrated difference is greater than or equal to a second preset threshold, and the channel quality parameter The statistical value is carried in the block confirmation frame BA frame or the multi-user block confirmation frame MBA frame, and the first difference is greater than or equal to the second difference, the sending end determines the second weight corresponding to the channel measurement frame , Wherein the BA frame or the MBA frame is a frame sent by the receiving end to the sending end; if the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or Equal to the second preset threshold, and the channel quality parameter statistical value is carried in the BA frame or the MBA frame, and the first difference is less than the second difference, the sending end determines the channel measurement frame corresponding to the The first weight.

In combination with the first aspect of the embodiments of the present application and any one of the first to third implementation manners of the first aspect of the embodiments of the present application, in the fourth implementation manner of the first aspect of the embodiments of the present application Before the sending end sends N channel measurement frames to the receiving end, the method further includes: the sending end obtains the second weight, where the second weight is used to indicate that the cause of the frame loss is interference; The terminal obtains a second condition corresponding to the cause of the frame loss as interference, where the second condition includes that the integrated difference is not less than the first preset threshold, and the integrated difference is greater than or equal to the second A preset threshold, and the channel quality parameter statistical value is carried in a BA frame or an MBA frame, and the first difference is greater than or equal to the second difference; the sending end establishes the second condition, the first difference The correlation between the second weight and the frame loss cause is interference.

In combination with the first aspect of the embodiments of the present application and any one of the first to fourth implementation manners of the first aspect of the embodiments of the present application, in the fifth implementation manner of the first aspect of the embodiments of the present application Before the sending end sends N channel measurement frames to the receiving end, the method further includes: the sending end obtains the first weight, where the first weight is used to indicate that the cause of the frame loss is attenuation; The terminal obtains the first condition corresponding to the attenuation due to the frame loss, the first condition includes that the integrated difference is not less than the first preset threshold, and the integrated difference is greater than or equal to the second preset Threshold, and the channel quality parameter statistical value is carried in a BA frame or an MBA frame, and the first difference is smaller than the second difference; the sending end establishes the first condition, the first weight, and the The reason for the frame loss is the correlation relationship of attenuation.

In combination with the first aspect of the embodiments of the present application and any one of the first to fifth implementation manners of the first aspect of the embodiments of the present application, in the sixth implementation manner of the first aspect of the embodiments of the present application After the sending end obtains the integrated difference, the method further includes: if the integrated difference is not less than the first preset threshold, and the integrated difference is greater than or equal to the second preset threshold, and The channel quality parameter statistical value is carried in the ACK frame of the confirmation frame, and the first difference is greater than or equal to the second difference, then the sending end determines the second weight corresponding to the channel measurement frame, wherein the An ACK frame is a frame sent by the receiving end to the sending end after hardware retransmission; if the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to the second preset And the channel quality parameter statistical value is carried in the ACK frame, and the first difference is smaller than the second difference, the sending end determines the first weight corresponding to the channel measurement frame.

In combination with the first aspect of the embodiments of the present application and any one of the first to sixth implementation manners of the first aspect of the embodiments of the present application, in the seventh implementation manner of the first aspect of the embodiments of the present application Before the sending end sends N channel measurement frames to the receiving end, the method further includes: the sending end obtains the second weight, where the second weight is used to indicate that the cause of the frame loss is interference; The terminal obtains a second condition corresponding to interference that the cause of the frame loss is interference, where the second condition includes that the integrated difference is not less than the first preset threshold, and the integrated difference is greater than or equal to a second preset Threshold, and the channel quality parameter statistical value is carried in the ACK frame, and the first difference is greater than or equal to the second difference; the sending end establishes the second condition, the second weight, and the The cause of frame loss is the correlation of interference.

In combination with the first aspect of the embodiments of the present application and any one of the first to seventh implementation manners of the first aspect of the embodiments of the present application, in the eighth implementation manner of the first aspect of the embodiments of the present application Before the sending end sends N channel measurement frames to the receiving end, the method further includes: the sending end obtains the first weight, where the first weight is used to indicate that the cause of the frame loss is attenuation; The terminal obtains the first condition corresponding to the attenuation due to the frame loss, the first condition includes that the integrated difference is not less than the first preset threshold, and the integrated difference is greater than or equal to the second preset Threshold, and the channel quality parameter statistical value is carried in the ACK frame, and the first difference is smaller than the second difference; the sending end establishes the first condition, the first weight, and the frame loss The reason is the attenuation relationship.

In combination with the first aspect of the embodiments of the present application and any one of the first to eighth implementation manners of the first aspect of the embodiments of the present application, in the ninth implementation manner of the first aspect of the embodiments of the present application , The statistical value of the channel quality parameter is carried in an ACK frame, a BA frame or an MBA frame.

In combination with the first aspect of the embodiments of the present application and any one of the first to the ninth implementation manners of the first aspect of the embodiments of the present application, in the tenth implementation manner of the first aspect of the embodiments of the present application The receiving end carries the channel quality parameter statistical value in the ACK frame, the BA frame or the MBA frame by multiplexing the ACK frame, the BA frame or the field in the MBA frame .

In combination with the first aspect of the embodiments of the present application and any one of the first to tenth implementation manners of the first aspect of the embodiments of the present application, in the eleventh implementation manner of the first aspect of the embodiments of the present application Wherein, the receiving end carries the channel quality parameter statistical value in the ACK frame, the BA frame or the MBA frame by inserting additional fields in the ACK frame, the BA frame or the MBA frame in.

In combination with the first aspect of the embodiments of the present application, any one of the first to the eleventh implementation manners of the first aspect of the embodiments of the present application, in the twelfth implementation of the first aspect of the embodiments of the present application In the manner, the sending end determining the frame error rate between the sending end and the receiving end according to the weight and the N specifically includes: the sending end obtains the frame error condition of the channel measurement frame, and The error frame condition includes an error frame with a count value of 1 and a correct frame with a count value of 0; the sending end determines the target count value of the error frame through the count value of the error frame and the weight; The terminal determines the frame error rate according to the target count value of the error frame and the N.

Combining any one of the first aspect of the embodiments of the present application, the first to the twelfth implementation manners of the first aspect of the embodiments of the present application, and the thirteenth implementation of the first aspect of the embodiments of the present application In the manner, after the transmitting end determines the frame error rate between the transmitting end and the receiving end according to the weight and the N, the method further includes: if the frame error rate is greater than a third threshold, Then the transmitting end adjusts the transmitting parameters of the transmitting end according to the preset adjustment algorithm.

A second aspect of the embodiments of the present application provides an apparatus for determining a frame error rate, including: a sending unit, configured to send N channel measurement frames to a receiving end, and the channel measurement frames are used to instruct the receiving end to send The terminal sends the channel quality parameter statistical value corresponding to the channel measurement frame, where N is a positive integer; the acquiring unit is configured to receive the channel quality parameter statistical value; and the processing unit is configured to determine according to the channel quality parameter statistical value The weight corresponding to the channel measurement frame; the processing unit is further configured to determine the frame error rate between the sending end and the receiving end according to the weight and the N.

With reference to the second aspect of the embodiments of the present application, in the first implementation of the second aspect of the embodiments of the present application, the channel quality parameter statistical value includes the maximum value, the minimum value, and the average value of the channel quality parameter; The processing unit is also used to obtain a first difference value, where the first difference value is the average value minus the minimum value; the processing unit is also used to obtain a second difference value, where the second difference value is The maximum value minus the average value; the processing unit is further configured to obtain a comprehensive difference value, the comprehensive difference value being the absolute value of the difference between the first difference value and the second difference value; the processing The unit is further configured to determine the first weight corresponding to the channel measurement frame if the comprehensive difference value is less than a first preset threshold.

With reference to the second aspect of the embodiments of the present application and the first implementation manner of the second aspect of the embodiments of the present application, in the second implementation manner of the second aspect of the embodiments of the present application, the processing unit is further configured to obtain The first weight, the first weight is used to indicate that the cause of the frame loss is attenuation; the processing unit is further configured to obtain a first condition corresponding to the cause of the frame loss as the attenuation, and the first condition includes the comprehensive The difference is less than the first preset threshold; the processing unit is further configured to establish an association relationship in which the first condition, the first weight, and the cause of frame loss are attenuation.

With reference to the second aspect of the embodiments of the present application and any one of the first to second implementation manners of the second aspect of the embodiments of the present application, in the third implementation manner of the second aspect of the embodiments of the present application, The processing unit is further configured to: if the integrated difference is not less than the first preset threshold, and the integrated difference is greater than or equal to a second preset threshold, and the channel quality parameter statistical value is carried in the block confirmation Frame BA frame or multi-user block confirmation frame MBA frame, and the first difference is greater than or equal to the second difference, the second weight corresponding to the channel measurement frame is determined, wherein, the BA frame or the The MBA frame is a frame sent by the receiving end to the sending end; the processing unit is further configured to: if the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to the second If the threshold is preset, and the channel quality parameter statistical value is carried in a BA frame or an MBA frame, and the first difference is smaller than the second difference, the first weight corresponding to the channel measurement frame is determined.

With reference to the second aspect of the embodiments of the present application and any one of the first to third implementation manners of the second aspect of the embodiments of the present application, in the fourth implementation manner of the second aspect of the embodiments of the present application, The processing unit is further configured to obtain the second weight, and the second weight is used to indicate that the cause of the frame loss is interference; the processing unit is further configured to obtain a second condition corresponding to the cause of the frame loss to be interference, The second condition includes that the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to the second preset threshold, and the channel quality parameter statistical value is carried in the BA frame Or in an MBA frame, and the first difference is greater than or equal to the second difference; the processing unit is further configured to establish an association relationship between the second condition, the second weight, and the cause of the frame loss as interference .

With reference to the second aspect of the embodiments of the present application and any one of the first to fourth implementation manners of the second aspect of the embodiments of the present application, in the fifth implementation manner of the second aspect of the embodiments of the present application, The processing unit is further configured to obtain the first weight, and the first weight is used to indicate that the cause of the frame loss is attenuation; the processing unit is also configured to obtain the first condition corresponding to the cause of the frame loss as the attenuation, The first condition includes that the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to a second preset threshold, and the channel quality parameter statistical value is carried in a BA frame or MBA In the frame, and the first difference is smaller than the second difference; the processing unit is further configured to establish an association relationship in which the first condition, the first weight, and the cause of the frame loss are attenuation.

With reference to the second aspect of the embodiments of the present application and any one of the first to fifth implementation manners of the second aspect of the embodiments of the present application, in the sixth implementation manner of the second aspect of the embodiments of the present application, The processing unit is further configured to: if the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to a second preset threshold, and the channel quality parameter statistical value is carried in the confirmation frame In the ACK frame, and the first difference is greater than or equal to the second difference, the second weight corresponding to the channel measurement frame is determined, wherein the ACK frame is retransmitted by the receiving end after hardware retransmission. The frame sent by the sending end; the processing unit is further configured to: if the integrated difference is not less than the first preset threshold, and the integrated difference is greater than or equal to a second preset threshold, and the channel quality The parameter statistical value is carried in the ACK frame, and the first difference is smaller than the second difference, then the first weight corresponding to the channel measurement frame is determined.

With reference to the second aspect of the embodiments of the present application and any one of the first to sixth implementation manners of the second aspect of the embodiments of the present application, in the seventh implementation manner of the second aspect of the embodiments of the present application, The processing unit is further configured to obtain the second weight, and the second weight is used to indicate that the cause of the frame loss is interference; the processing unit is further configured to obtain a second condition corresponding to the cause of the frame loss to be interference, The second condition includes that the comprehensive difference value is not less than the first preset threshold value, and the comprehensive difference value is greater than or equal to a second preset threshold value, and the channel quality parameter statistical value is carried in an ACK frame, And the first difference is greater than or equal to the second difference; the processing unit is further configured to establish an association relationship between the second condition, the second weight, and the cause of the frame loss being interference.

With reference to the second aspect of the embodiments of the present application and any one of the first to seventh implementation manners of the second aspect of the embodiments of the present application, in the eighth implementation manner of the second aspect of the embodiments of the present application, The processing unit is further configured to obtain the first weight, and the first weight is used to indicate that the cause of the frame loss is attenuation; the processing unit is also configured to obtain the first condition corresponding to the cause of the frame loss as the attenuation, The first condition includes that the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to a second preset threshold, and the channel quality parameter statistical value is carried in an ACK frame, And the first difference is smaller than the second difference; the processing unit is further configured to establish an association relationship in which the first condition, the first weight, and the cause of frame loss are attenuation.

With reference to the second aspect of the embodiments of the present application and any one of the first to eighth implementation manners of the second aspect of the embodiments of the present application, in the ninth implementation manner of the second aspect of the embodiments of the present application, The statistical value of the channel quality parameter is carried in an ACK frame, a BA frame or an MBA frame.

With reference to the second aspect of the embodiments of the present application and any one of the first to ninth implementation manners of the second aspect of the embodiments of the present application, in the tenth implementation manner of the second aspect of the embodiments of the present application, The receiving end carries the channel quality parameter statistical value in the ACK frame, the BA frame or the MBA frame by multiplexing the ACK frame, the BA frame or the fields in the MBA frame.

In combination with the second aspect of the embodiments of the present application and any one of the first to tenth implementation manners of the second aspect of the embodiments of the present application, in the eleventh implementation manner of the second aspect of the embodiments of the present application The receiving end carries the channel quality parameter statistical value in the ACK frame, the BA frame or the MBA frame by inserting an extra field in the ACK frame, the BA frame or the MBA frame .

In combination with the second aspect of the embodiments of the present application, any one of the first to the eleventh implementation manners of the second aspect of the embodiments of the present application, in the twelfth implementation manner of the second aspect of the embodiments of the present application The processing unit is also used to obtain the error frame condition of the channel measurement frame, and the error frame condition includes an error frame with a count value of 1 and a correct frame with a count value of 0; the processing unit is also used to pass The count value of the errored frame and the weight determine the target count value of the errored frame; the processing unit is further configured to determine the frame error rate according to the target count value of the errored frame and the N.

In combination with the second aspect of the embodiments of the present application and any one of the first to twelfth implementation manners of the second aspect of the embodiments of the present application, in the thirteenth implementation manner of the second aspect of the embodiments of the present application Wherein, the processing unit is further configured to adjust the transmission parameters of the transmitting end according to a preset adjustment algorithm if the frame error rate is greater than a third threshold.

A third aspect of the embodiments of the present application provides an access point, including a processor, and a radio frequency transceiving circuit coupled to the processor; the processor is configured to send N channel measurements to a station through the radio frequency transceiving circuit Frame, the channel measurement frame is used to instruct the station to send the channel quality parameter statistical value corresponding to the channel measurement frame to the access point, and the N is a positive integer; the processor is further used to: The radio frequency transceiver circuit receives the channel quality parameter statistical value fed back by the station; determines the weight corresponding to the channel measurement frame according to the channel quality parameter statistical value; and determines the interface according to the weight and the N The frame error rate between the entry point and the site.

With reference to the third aspect of the embodiments of the present application, in an implementation manner of the third aspect of the embodiments of the present application, the processor is further configured to execute any method of the first aspect described above.

The fourth aspect of the embodiments of the present application provides a data processing system, including an access point and a station; the access point is used to send N channel measurement frames to the station, where N is a positive integer; the station is used for Send the channel quality parameter statistical value corresponding to the channel measurement frame to the access point; the access point is also used to receive the channel quality parameter statistical value; the access point is also used to receive the channel quality parameter statistical value according to the channel quality The parameter statistical value determines the weight corresponding to the channel measurement frame; the access point is further configured to determine the frame error rate between the access point and the station according to the weight and the N.

With reference to the fourth aspect of the embodiments of the present application, in an implementation manner of the fourth aspect of the embodiments of the present application, the access point is further configured to execute any method of the first aspect described above.

A fifth aspect of the embodiments of the present application provides a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute any method as described in the first aspect.

The sixth aspect of the embodiments of the present application provides a computer program product containing instructions, which when run on a computer, causes the computer to execute any method as in the first aspect described above.

In the technical solution provided by the embodiments of the present application, the sending end sends N channel measurement frames to the receiving end, and the receiving end determines the channel quality parameter statistical value corresponding to each channel measurement frame according to the reception of the channel measurement frame, and feeds it back to the sending end , And then the sender receives the statistical value of the channel quality parameter. The sending end may determine the weight corresponding to the channel measurement frame according to the statistical value of the channel quality parameter. Finally, the sending end determines the frame error rate between the sending end and the receiving end according to the weight and the number of channel measurement frames N. In the embodiments of the present application, different frame loss causes can obtain different channel quality parameter statistical values. The sending end can determine the weight corresponding to each frame loss cause according to the channel quality parameter statistical value. For important frame loss reasons, the sending end can Set a higher weight. For irrelevant frame loss reasons, the sender can set a lower weight, and then determine the frame error rate according to the weight and the number of channel measurement frames. The frame error rate calculated by the sending end according to the weight can accurately reflect the link status, and the effect is better when the sending end performs optimization and adjustment.

Description of the drawings

FIG. 1 is an example diagram of communication between the sending end and the receiving end through WLAN frames in an embodiment of the application;

Figure 2 is a diagram showing an example of a channel between the current transmitting end and the receiving end;

FIG. 3 is a schematic diagram of a method for determining a frame error rate in an embodiment of the application;

FIG. 4 is an example diagram of communication between the sending end and the receiving end in an embodiment of this application;

FIG. 5 is an example diagram of a MAC frame in an embodiment of the application;

FIG. 6 is an example diagram of a channel measurement frame in an embodiment of this application;

FIG. 7 is an example diagram of an ACK frame in an embodiment of the application;

FIG. 8 is an example diagram of a confirmation frame in an embodiment of this application;

FIG. 9 is an example diagram of a BA frame in an embodiment of the application;

FIG. 10 is another example diagram of the confirmation frame in the embodiment of this application;

FIG. 11 is an example diagram of an access point in an embodiment of this application;

FIG. 12 is an example diagram of a site in an embodiment of this application;

FIG. 13 is an example diagram of a data processing system in an embodiment of this application.

Detailed ways

The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, without having to use To describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "corresponding to" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to a clearly listed Instead, it may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment.

In the embodiments of the present application, words such as "exemplary" or "for example" are used as examples, illustrations, or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as "exemplary" or "for example" are used to present related concepts in a specific manner.

In order to make the description of the following embodiments clear and concise, a brief introduction of related technologies is first given:

Wireless local area networks (WLAN) refers to the application of wireless communication technology to interconnect computer devices to form a network system that can communicate with each other and share resources. The essential feature of the wireless local area network is that it no longer uses a communication cable to connect the computer to the network, but connects it wirelessly, which makes the construction of the network and the movement of the terminal more flexible.

Among them, wireless communication (wireless communication) technology is a communication method that uses the characteristic that electromagnetic wave signals can propagate in free space for information exchange. In WLAN, the sender and receiver generally exchange information in a certain channel through WLAN frames. A channel may be a wireless channel in the embodiment of the present application, which is a data signal transmission channel that uses a wireless signal as a transmission medium, and is generally divided according to the frequency band used by the wireless signal. Among them, wireless signals are transmitted in the form of WLAN frames in the link layer. WLAN frames may include, but are not limited to, data frames, control frames, management frames, detection frames, service frames, and non-service frames.

FIG. 1 is an example diagram of communication between a sending end and a receiving end through a WLAN frame in an embodiment of the application. It can be seen that one sending end 101 can communicate with multiple receiving ends 102. The sending end 101 and the receiving end 102 may be the same type of equipment or different types of equipment, and specifically may be a base station, a wireless access point (AP), a router, an electronic device, and so on. Among them, the electronic device may be a mobile phone, a smart watch, a smart speaker, etc., which is not limited in the embodiment of the present application. It can be understood that, in some embodiments, the sending and receiving relationship between the sending end 101 and the receiving end 102 can be exchanged. For example, a mobile phone can also be used as a sender to communicate with other mobile phones.

In the communication process between the sending end and the receiving end, the time-varying characteristics of the wireless channel require that various sending and receiving parameters can be automatically adjusted to adapt to the channel environment, thereby ensuring the quality of service (QoS). At present, the sender generally adjusts automatically according to the IEEE 802.11 protocol.

Figure 2 is an example diagram of the current channel between the sending end and the receiving end. The first channel 21 and the second channel 22 are included in FIG. 2. The first channel 21 is divided into an upper part and a lower part by arrows. The upper part of the first channel 21 shows the WLAN frame sent by the sender to the receiver, and the lower part of the first channel 21 shows the receiver sends to the sender. WLAN frame. The second channel 22 is similar to the first channel 21, and will not be repeated here. The sending end first sends a detection frame 201 to the receiving end through the first channel 21. The detection frame 201 may be a data frame, a management frame, a control frame or other proprietary format frames. The detection frame 201 may include additional information, which is used to instruct the receiving end to send an information feedback frame 203 to the sending end. After receiving the detection frame 201, the receiving end returns an acknowledgement frame 202 to the sending end through the first channel according to the IEEE 802.11 protocol. . In addition, the receiving end responds to the additional information in the detection frame 201 to obtain channel quality information through statistics. Channel quality information may include, but is not limited to, queue length, channel load, packet error rate, signal-to-noise ratio (SNR)/error vector magnitude (EVM)/received signal strength of detection frame 201 Statistics of indicators (received signal strength indication, RSSI) at the granularity of each spatial stream, each symbol, and each 20MHz bandwidth, etc. In some embodiments, the sending end may send multiple wireless signals at the same time, and each wireless signal may be referred to as a spatial stream. The spatial stream can be sent through the antenna at the transmitting end, and each spatial stream can reach the receiving end through a different path. Then, the receiving end may generate an information feedback frame 203, and the information feedback frame may carry channel quality information obtained by statistics of the receiving end. The information feedback frame 203 may be one of a data frame, a management frame, a control frame, a service frame, and a non-service frame. Exemplarily, the receiving end may determine through channel competition that the channel used when the information feedback frame 203 is transmitted is the second channel 22. Then the receiving end sends an information feedback frame 203 to the sending end through the second channel 22.

After receiving the information feedback frame 203 through the second channel 22, the sending end may return an acknowledgement frame 204 to the receiving end according to the IEEE 802.11 protocol. In addition, the sending end can automatically adjust various transmission parameters according to the channel quality information in the information feedback frame 203. For example, the transmitting end can adjust the link rate, adjust the signal transmission power, or adjust the signal frequency. The embodiment of the present application does not specifically limit the adjustment algorithm of the adjustment parameter of the sender. In practical applications, the sending end may also adjust other transmission parameters, such as link rate, etc. The embodiment of the present application does not specifically limit the type of adjusting transmission parameters.

When most of the detection frames 201 are lost due to interference, reducing the link rate at the transmitting end cannot solve the problem of frame loss due to interference. However, at this time, the frame error rate calculated by the sender according to the channel quality information is too high, and the sender still takes adjustment measures to reduce the link rate. Therefore, the above method is likely to cause the technical problem of erroneously lowering the link rate.

In order to solve the foregoing problem, an embodiment of the present application provides a method for determining a frame error rate, as shown in FIG. 3, which includes:

301. The sending end sends a channel measurement frame to the receiving end;

In some embodiments, the channel measurement frame refers to a WLAN frame used for channel measurement, which may be a service frame or a non-service frame constructed by the sender itself. The channel measured by the channel measurement frame is the channel currently used by the channel measurement frame.

In some embodiments, the channel measurement frame includes additional information, which is similar to the aforementioned detection frame 201, and will not be repeated here.

302. The receiving end determines the channel quality parameter statistical value according to the reception situation of the channel measurement frame.

In the embodiment of the present application, the channel measurement frame may include multiple subframes, and each subframe may include multiple symbols. Exemplarily, a certain channel measurement frame includes 10 subframes, and each subframe includes 14 symbols, then the channel measurement frame includes 140 symbols.

In some embodiments, the receiving end may determine the SNR corresponding to each symbol in the channel measurement frame according to the reception of the channel measurement frame. Exemplarily, if 140 symbols are included in the channel measurement frame, the receiving end can determine 140 SNRs. Then, the receiving end can count the maximum, minimum, and average values of all SNRs. Exemplarily, after the receiving end determines 140 SNRs, the maximum, minimum, and average values of the 140 SNRs can be counted.

In some embodiments, the receiving end may determine the EVM corresponding to each symbol in the channel measurement frame according to the reception of the channel measurement frame. Exemplarily, if 140 symbols are included in the channel measurement frame, the receiving end can determine 140 EVMs. Then, the receiving end can count the maximum, minimum, and average values of all EVMs. Exemplarily, after the receiving end determines 140 SNRs, the maximum, minimum, and average values of these 140 EVMs can be counted.

In practical applications, the receiving end can also determine other channel quality parameters in the channel measurement frame according to the reception of the channel measurement frame, and determine the maximum value, minimum value, and average value, which will not be repeated here. It is understandable that the channel quality parameter may be the aforementioned SNR, EVM, or RSSI, which is not limited in the embodiment of the present application. The channel quality parameter statistical value may be the maximum value, the minimum value, and the average value of the channel quality parameter. In practical applications, it may also be other statistical values, such as standard deviation, which are not limited in the embodiment of the present application. In the embodiment of the present application, the channel corresponding to the above-mentioned channel quality parameter may be the channel used by the channel measurement frame currently received by the receiving end. As shown in FIG. 4, the transmitting end sends the channel measurement frame to the receiving end through the third channel 41. Then the channel corresponding to the channel quality parameter is the third channel 41.

303. The receiving end sends the channel quality parameter statistical value to the sending end.

In the embodiment of the present application, the receiving end may send the channel quality parameter statistical value to the sending end through an acknowledgement frame. Exemplarily, the receiving end may carry the channel quality parameter statistical value in the confirmation frame, and then send the confirmation frame to the sending end. In the embodiment of the present application, the receiving end may directly carry the channel quality parameter statistical value in the confirmation frame, and there is no need to transmit the channel quality parameter statistical value through the information feedback frame. Therefore, the receiving end can send the channel quality parameter statistics to the transmitting end without channel competition, avoiding collision overhead caused by channel competition.

In some embodiments, the acknowledgement frame may be an acknowledgement (acknowledge, ACK) frame. The ACK frame is a control frame that is used to feed back to the sender confirming the receipt of the channel measurement frame.

In other embodiments, the confirmation frame may be a block ack (BA) frame or a multi-user block ack (MBA) frame. When the frame aggregation technology (Frame Aggregation) is used for the communication between the sender and the receiver, the receiver usually uses a BA frame or an MBA frame to feed back to the sender to confirm receipt of the channel measurement frame. The frame aggregation technology may include aggregation for MSDU (A-MSDU) and aggregation for MPDU (A-MPDU), which is not limited in the embodiment of the present application.

304. The transmitting end determines the weight corresponding to the channel measurement frame according to the statistical value of the channel quality parameter.

In the embodiment of the present application, the sending end first receives the confirmation frame from the receiving end, and the confirmation frame carries the channel quality parameter statistical value. Then, the sending end can determine the weight corresponding to the channel measurement frame according to the statistical value of the channel quality parameter. In some embodiments, the sender pre-sets the association relationship between the cause of frame loss, the judgment condition, and the weight. Exemplarily, Table 1 is an example of the association relationship in the embodiment of the application. In some embodiments, the judgment condition may include a first condition and a second condition. For ease of description, the embodiments of the present application are collectively referred to as the judgment condition.

Table 1

判断条件Analyzing conditions	权重Weights	丢帧原因Reasons for frame loss
D<D _th1 D<D _th1	第一权重First weight	衰减attenuation
D≥D _th2,确认帧为BA帧或MBA帧,D _min≥D _max D≥D _th2 , the confirmation frame is BA frame or MBA frame, D _min ≥D _max	第二权重Second weight	干扰interference
D≥D _th2,确认帧为BA帧或MBA帧,D _min<D _max D≥D _th2 , the confirmation frame is BA frame or MBA frame, D _min <D _max	第一权重First weight	衰减attenuation
D≥D _th2,确认帧为ACK帧,且发生过硬件重传,D _min≥D _max D≥D _th2 , the confirmation frame is an ACK frame, and hardware retransmission has occurred, D _min ≥D _max	第二权重Second weight	干扰interference
D≥D _th2,确认帧为ACK帧,且发生过硬件重传,D _min<D _max D≥D _th2 , the confirmation frame is an ACK frame, and hardware retransmission has occurred, D _min <D _max	第一权重First weight	衰减attenuation

In Table 1, D _min =avg-min, D _max =max-avg, D=|D _min -D _max |, where avg is the average value of channel quality parameters, min is the minimum value of channel quality parameters, and max is The maximum value of the channel quality parameter. Exemplarily, if the receiving end obtains 140 SNR statistics, avg is the average value of 140 SNRs, min is the minimum value of 140 SNRs, and max is the maximum value of 140 SNRs. The sending end can receive avg, min, and max, and then calculate D _min , D _max and D.

In some embodiments, the sending end may preset D _th1 and D _th2 . Wherein, D _th1 is the first preset threshold, and D _th2 is the second preset threshold. Exemplarily, a worker _{inputs specific values of D th1} and D _th2 into the sending end, and the sending end may record these two values as the first preset threshold and the second preset threshold. The sending end records the first preset threshold value and the second preset threshold value can be realized by the sending end storing the first preset threshold value and the second preset threshold value in the database, or the sending end can save the first preset threshold value and the second preset threshold value in the memory The preset threshold and the second preset threshold.

In some embodiments, D _th1 may be equal to D _th2 . In other embodiments, D _th1 may be smaller than D _th2 . At this time, it may happen that the statistical values of the channel quality parameters carried in the confirmation frame do not meet all the judgment conditions in Table 1. If the sending end determines that the statistical values of the channel quality parameters carried in the confirmation frame do not satisfy all the judgment conditions in Table 1, the sending end can set the weight of the corresponding channel measurement frame as the third weight.

In some embodiments, the sending end may pre-set the association relationship between the cause of the frame loss, the judgment condition and the weight. Exemplarily, a worker can connect to the sending end through a terminal, and input the frame loss cause, judgment condition, and weight into the sending end through an input device of the terminal, so that the sending end establishes an association relationship between the frame loss cause, judgment condition, and weight. For example, if the sending end is a home router, the worker can connect to the home router through a computer, and input the frame loss reason, judgment condition and weight into the home router, so that the home router establishes an association relationship between the frame loss reason, judgment condition and weight. After the sending end receives the confirmation frame from the receiving end, the weight of the corresponding channel measurement frame can be determined according to the pre-established association relationship.

In some embodiments, after receiving the confirmation frame from the receiving end, the sending end can determine the type of the confirmation frame, and extract avg, min, and max from the confirmation frame, and then calculate D _min , D _max and D. The type of confirmation frame can be ACK frame, BA frame or MBA frame. Then determine the weight of the corresponding channel measurement frame according to the judgment conditions as shown in Table 1.

In some embodiments, if the frame aggregation technology is adopted for the communication between the sender and the receiver, the sender defaults that the acknowledgement frame of the receiver is a BA frame or an MBA frame. In some embodiments, if an automatic repeat request (ARQ) is used during the communication between the sender and the receiver, the sender determines that the acknowledgement frame of the receiver is an ACK frame, and further determines whether the ACK frame is passed by the receiver. ACK frame sent after hardware retransmission.

It can be understood that the frame loss reasons in Table 1 are related to weights. For example, the frame loss cause associated with the first weight is attenuation, and the frame loss cause associated with the second weight is interference. In practical applications, the sending end may also set other judgment conditions, weights, and frame loss reasons, which are not limited in the embodiment of the present application.

In the embodiments of this application, SNR is the abbreviation of signal to interference plus noise ratio (SINR), SINR=Signal/(Interference+Noise), where Signal represents the value of the useful signal measured by the receiving end Power, Interference represents the power of the signal or channel interference signal measured at the receiving end, including interference from other cells in the system and interference from different systems. Noise represents low noise, which is related to the specific measurement bandwidth and receiver noise figure. Based on this SINR calculation formula, it can be considered that the attenuation refers to the situation where the Signal is relatively small, and the interference (or collision) is the situation where the Interference is relatively large. Both the attenuation and interference will cause the SINR value to be small, so that the sender makes the same judgment on the channel quality in these two situations. Therefore, in some embodiments, the sending end sets different weights according to the two situations, so that the sending end makes different judgments on the channel quality in the two situations.

Among them, when the cause of frame loss is attenuation, the power of the useful signal measured by the receiving end is relatively small. Therefore, when adjusting at the transmitting end, the power of the useful signal can be increased to reduce frame loss. The sender can assign a higher weight to the error frame count value to make appropriate adjustments when counting the frame loss situations where the cause of the frame loss is attenuation. When the cause of frame loss is interference, it is generally the case that the Interference is relatively large, that is, the power of the channel interference signal is large, and it is generally difficult for the sender to adjust at this time, and the interference should be checked manually. Therefore, the sender can assign a lower weight to the error frame count value when counting the frame loss situations where the cause of the frame loss is interference, so as to avoid erroneous adjustments due to interference. In some embodiments, the first weight set by the sending end is greater than the second weight. Exemplarily, the transmitting end may set the first weight of the attenuation association to 0.8, and the second weight of the interference association to 0.1.

305. The weight corresponding to the channel measurement frame at the transmitting end and the total number of channel measurement frames determine the frame error rate.

In the embodiment of the present application, the sending end may send N channel measurement frames to the receiving end, and N is a positive integer. The sending end may determine the weights of the N channel measurement frames according to the received statistical values of channel quality parameters and preset judgment conditions.

In some embodiments, the sender can obtain the error frame condition of the channel measurement frame. The error frame condition includes the error frame with a count value of 1 and the correct frame with a count value of 0. The implementation method for the sender to obtain the error frame condition is the same as traditional calculations. The frame error rate method is similar and will not be repeated here. Exemplarily, after the sending end sends 1000 channel measurement frames to the receiving end, the sending end determines that the error frame condition is that 5 of the channel measurement frames are error frames, and the remaining 995 channel measurement frames are correct frames.

In some embodiments, the sending end may multiply the error frame count value with the weight corresponding to the error frame to obtain the target technical value of the error frame. Exemplarily, the weights of the 5 errored frames are 0.1, 0.8, 0.1, 0.1, 0.1, and the sender multiplies the count value and the weight to obtain the target count value of the 5 errored frames is 0.1, 0.8 , 0.1, 0.1, 0.1.

In some embodiments, the sending end may calculate the sum of the target count values of error frames, and then divide the sum of the target count values by the total number of channel measurement frames N to obtain the frame error rate. Exemplarily, the target count values of 5 errored frames are 0.1, 0.8, 0.1, 0.1, 0.1, the sum of the target count values is 1.2, and the total number of channel measurement frames N is 1000, then the frame error rate is 1.2 per thousand.

In some embodiments, the sending end can automatically adjust according to the determined frame error rate. Exemplarily, the automatic adjustment rule set by the sender is: if the frame error rate is greater than or equal to the preset threshold (5 parts per thousand), then the link rate is reduced; if the frame error rate is less than the preset threshold value (5 parts per thousand), ), the link rate is not reduced. Assume that 5 of the 1000 channel measurement frames sent by the sender are errored frames, and the errored frames are caused by interference, attenuation, interference, interference, and interference. Then the sending end can determine the weights of the five error frames to be 0.1, 0.8, 0.1, 0.1, 0.1 according to the judgment rule in step 304, and finally calculate the frame error rate to be 1.2 per thousand. Then the sender will not reduce the link rate according to the above-mentioned automatic adjustment rule. However, if the traditional method is used to calculate the frame error rate, the sending end calculates the frame error rate of 5 per thousand. According to the above-mentioned automatic adjustment rule, the link rate will be dropped by mistake. Therefore, the embodiment of the present application can actually analyze the cause of frame loss, and solve the technical problem that the current method of calculating the frame error rate will mistakenly drop the link rate due to the interference of the frame loss.

In practical applications, the sender can also adjust the transmission parameters according to the determined frame error rate through other automatic adjustment algorithms. For example, the sending end may adjust through a rate adaptive algorithm (autorate), which is not specifically limited in the embodiment of the present application. FIG. 4 is a diagram of an example of communication between the sending end and the receiving end in an embodiment of this application. In Fig. 4, the third channel 41 is divided by arrows into an upper part and a lower part. The upper part shows the WLAN frame sent by the sender to the receiver, and the lower part shows the WLAN frame sent by the receiver to the sender. The sending end first sends a channel measurement frame 401 to the receiving end through the third channel 41. The channel measurement frame 401 is similar to the detection frame 201 corresponding to FIG. 2, and will not be repeated here.

In the embodiment of the present application, the channel measurement frame 401 includes additional information 402, and the additional information 402 is used to instruct the receiving end to send an acknowledgement frame 403 to the sending end. Exemplarily, the channel measurement frame 401 is formed by an existing MAC frame with additional information 402, and the existing MAC frame is shown in FIG. 5. Fig. 5 is a diagram of an example of a MAC frame in an embodiment of the application. The MAC frame may include a frame header field 501, a high throughput control (HTcomtrol, HTC) field 502, a key field (payload) 503, and a frame check sequence (FCS) 504. Wherein, the frame header part 501 includes a frame control part, an address, etc., which are not specifically limited in the embodiment of the present application. The HTC field 502 is mainly used to support high-throughput data transmission. The key field 503 may also be referred to as a frame body field, which is the main part of the MAC frame and is used to transmit data. The FCS field is also called the frame tail, which is used to verify the MAC frame. The sending end can insert the additional information 402 into the MAC frame shown in FIG. 5 to form the channel measurement frame 401 shown in FIG. 6. The sender can insert the additional information 402 after the HTC field 502 and before the key field 503.

In some embodiments, the sending end may also use a bit in the HTC field to indicate that the channel measurement frame 401 has additional information 402. Exemplarily, the sender can use the reserved bit in the HTC field. When the sender sets the value of the reserved bit to 1, it means that the channel measurement frame 401 has additional information 402. When the sender sets the value of the reserved bit When it is 0, it means that the channel measurement frame 401 does not have additional information 402. In another example, the HTC field 502 is specifically a very high throughput control field (VHT HTC), and the sending end can multiplex the coding type field in the VHT HTC to indicate whether the channel measurement frame 401 contains additional information 402. In practical applications, the HTC field 502 can also adopt other variants. The sender can multiplex the HTC field or use reserved bits to indicate whether the channel measurement frame 401 contains additional information 402. This is the case in this application. No longer.

After receiving the channel measurement frame 401 from the transmitting end, the receiving end may respond to the additional information 402 in the channel measurement frame 401 to obtain feedback information 404 by statistics. In some embodiments, the feedback information 404 may be the channel quality parameter statistical value in the embodiment corresponding to FIG. 3 described above. In addition, the receiving end may add the feedback information 404 to the confirmation frame 403. The confirmation frame 403 may be an ACK frame, a BA frame, or an MBA frame.

In some embodiments, the receiving end may append the feedback information 404 to the ACK frame. FIG. 7 is an example diagram of an ACK frame in an embodiment of the application. The ACK frame includes a frame header field 701, a key field 702, and a frame check sequence 703. Wherein, the frame header field 701 includes fields such as the frame control field, which is not specifically limited in the embodiment of the present application. The key field 702 is used to indicate the confirmed address, associated information, etc., which is not specifically limited in the embodiment of the present application. The frame check sequence 703 is used to check the ACK frame. The receiving end can insert the feedback information 404 into the ACK frame as shown in FIG. 7 to obtain the confirmation frame 403 as shown in FIG. 8. In some embodiments, the receiving end may insert the feedback information 404 after the key field 702 and before the frame check sequence 703. In addition, the receiving end may insert a magic number 404a before the feedback information 404 to indicate that the confirmation frame 403 has the feedback information 404. Exemplarily, the magic number 404a may be 0x5A5A5A5A. In practical applications, the receiving end may also use other codes to represent the magic number 404a, and the specific code of the magic number is not limited in the embodiment of the present application.

In other embodiments, the receiving end may append the feedback information 404 to the BA frame. Fig. 9 is an example diagram of a BA frame in an embodiment of the application. The BA frame includes a frame header field 901, a key field 902, and a frame check sequence 903. Wherein, the frame header field 901 includes fields such as the frame control field, which is not specifically limited in the embodiment of the present application. The key field 902 is used to indicate the confirmed address, associated information, etc., which is not specifically limited in the embodiment of the present application. The frame check sequence 903 is used to check the ACK frame. The receiving end can insert the feedback information 404 into the BA frame as shown in FIG. 9 to obtain the confirmation frame 403 as shown in FIG. 10. In some embodiments, the receiving end may insert the feedback information 404 after the frame header field 901 and before the key field 903. In addition, the receiving end may also insert a magic number 404a before the feedback information 404 to indicate that the confirmation frame 403 has feedback information 404. The code of the magic number is similar to the magic number in the embodiment shown in FIG. 8, and will not be repeated here.

In other embodiments, the receiving end may add the feedback information 404 to the MBA frame, which is similar to the embodiments corresponding to FIG. 9 and FIG. 10 and will not be repeated here.

In some embodiments, the receiving end may also add the feedback information 404 to the confirmation frame 403 by multiplexing certain fields in the confirmation frame 403. The multiplexing manner is similar to the multiplexing manner of the HTC field in the foregoing embodiment corresponding to FIG. 6, which is not repeated in the embodiment of the present application.

In the embodiment of the present application, after the receiving end generates the confirmation frame 403 containing the feedback information 404, the confirmation frame 403 may be returned to the transmitting end. In WLAN technology, after the sender sends a WLAN frame to the receiver, the receiver will quickly return an acknowledgement frame without channel competition. Therefore, in the embodiment of the present application, the feedback information 404 is added to the confirmation frame 403, which can return the feedback information 404 without channel competition, avoiding competition overhead, and speeding up the information feedback.

Fig. 11 is an example diagram of an access point in an embodiment of the application. In this embodiment of the present application, an access point (access point, AP) may be the sending end or the receiving end. For ease of description, the embodiment of the present application uses the AP as the transmitting end for description. The AP may include a processor 1101 and a radio frequency (RF) transceiver circuit 1102. Among them, the processor 1101 may be a microprocessor (microcontroller unit, MCU), processor, main processor, controller, or application specific integrated circuit (ASIC), etc., and may be connected to the AP by using various interfaces and lines. The various other modules of the AP execute various types of digital storage instructions, perform various functions of the AP and process data, thereby realizing various functions of the AP. The RF transceiver circuit 1102 is coupled to the processor 1101. The RF transceiver circuit 1102 may include a transceiver, a power amplifier, a frequency filter and other devices for filtering and power amplifying the channel measurement frame. This is not done in this embodiment of the application. Specific restrictions. In practical applications, the AP can add other modules or reduce modules according to actual needs, such as media access control (MAC) or physical layer (PHY), which is not specifically limited in the embodiment of the present application.

In some embodiments, the AP can communicate with a station (STA). The STA can be a client in a WLAN, a computer equipped with a wireless network card, or a smart phone with a WiFi module, and it can be mobile. , It can also be fixed. Specifically, the STA includes but is not limited to a mobile phone, a tablet computer, a desktop computer, etc., which is not limited in the embodiment of the present application. Figure 12 is an example diagram of a station STA. In this embodiment of the present application, the STA may include a processor 1201 and an RF transceiver circuit 1202 coupled to the processor 1201. The processor 1201 may be an element such as a microprocessor, a processor, a main processor, a controller, or an application specific integrated circuit. The RF transceiver circuit 1202 may include devices such as transceivers, power amplifiers, and frequency filters. The embodiment of the application does not specifically limit this.

In some embodiments, when the AP needs to determine the frame error rate, the processor 1101 may generate additional information. Then, the processor 1101 can insert the additional information into the WLAN frame, and multiplex some reserved bits in the WLAN frame to indicate that the WLAN frame has additional information. For the specific process, refer to the aforementioned embodiments in FIGS. 4 to 10 , I won’t repeat it here. The WLAN frame with additional information inserted may also be referred to as a channel measurement frame. The processor 1101 may transmit the generated channel measurement frame to the RF transceiver circuit 1102. Then, the RF transceiver circuit 1102 can send the channel measurement frame to the STA through the antenna. The specific process is similar to step 301 in the foregoing embodiment, and will not be repeated here.

In some embodiments, after the STA receives the channel measurement frame through the RF transceiver circuit 1202, the processor 1201 may respond to the channel measurement frame and determine the channel quality parameter statistics according to the reception of the channel measurement frame. The specific process is the same as the previous embodiment. Step 302 in is similar and will not be repeated here. Then, the processor 1201 may add the channel quality parameter statistical value as feedback information to the confirmation frame corresponding to the channel measurement frame, and send it to the AP through the RF transceiver circuit 1202. The specific process is similar to step 303 in the foregoing embodiment. I won't repeat it here.

In some embodiments, when the STA returns an acknowledgement frame carrying feedback information to the AP, the AP may receive the acknowledgement frame through the RF transceiver circuit 1102. The RF transceiver circuit 1102 can perform processing such as filtering and power amplification on the confirmation frame. Then the RF transceiver circuit 1102 transmits the processed confirmation frame to the processor 1101. The processor 1101 can extract the feedback information in the confirmation frame, and then determine the weight corresponding to the channel measurement frame according to the feedback information, and then determine the frame error rate. This process is similar to steps 304 and 305 in the embodiment corresponding to FIG. 3, I won't repeat them here.

In some embodiments, after the processor 1101 determines the frame error rate, it can adjust the parameters in the processor 1101 or the RF transceiver circuit 1102 according to the frame error rate. Exemplarily, the rule of the AP automatic adjustment algorithm may be that the frame error rate exceeds five thousandths and the signal transmission power is increased. Then, when the frame error rate determined by the processor 1101 exceeds five thousandths, the processor 1101 can transmit and receive RF The amplification factor of the power amplifier in the circuit is increased. In practical applications, the processor 1101 may also perform other similar adjustments according to the frame error rate and the automatic adjustment algorithm, which is not specifically limited in the embodiment of the present application.

In some embodiments, the AP may also include memory. The memory is connected to the processor 1101 and is used to store additional information or feedback information. Exemplarily, the memory may be a direct memory access (DMA).

FIG. 13 is an example diagram of a data processing system provided by an embodiment of the application. The data processing system includes an access point 1301 and a station, where the access point 1301 can be a router, a modem with wireless connection function, portable wifi and other access devices, which can be set in a room, living room, public place, etc. local. The types of sites may include, but are not limited to, mobile phone terminals 1302, notebook computers 1303, and tablet computers 1304. In actual applications, sites may also be other devices that can realize wireless Internet access, which is not described in detail in the embodiment of the present application. In some embodiments, one access point 1301 can be connected to multiple mobile phone terminals 1302 at the same time, and can also be connected to multiple laptop computers 1303 or tablet computers 1304. It is understandable that the station can connect to the Internet through the access point 1301.

In the embodiment of the present application, the access point 1301 may execute the steps of the sending end in each embodiment corresponding to FIG. 3, such as step 301, step 304, and step 305. The station may execute the steps of the receiving end in each embodiment corresponding to FIG. 3, such as step 302 and step 303. This is not repeated in the embodiment of the application.

In some embodiments, the station may perform the steps of the sending end in the various embodiments corresponding to FIG. 3, and the access point 1301 may perform the steps of the receiving end in the various embodiments corresponding to FIG. 3. Exemplarily, when the mobile terminal 1302 uploads a video file, the mobile terminal 1302 may execute the steps of the sending end in the embodiments corresponding to FIG. 3, and the access point 1302 may execute the steps of the receiving end in the embodiments corresponding to FIG. 3. In this case, the mobile phone terminal 1302 can determine the frame error rate, and then adjust the transmission parameters of the mobile phone terminal 1302 according to the frame error rate to improve the upload rate.

In some embodiments, the mobile phone terminal 1302 can open a "mobile phone hotspot" and connect with other mobile phone terminals 1302, so that the other mobile phone terminals 1302 can communicate through the mobile phone terminal 1302 that opens the "mobile phone hotspot". At this time, the mobile terminal 1302 that opens the "mobile phone hotspot" can perform steps similar to the above-mentioned access point 1301. In the same way, the laptop 1303 or the tablet 1304 can also open a similar hotspot and perform the steps similar to the access point 1301 described above.

In addition, it should be noted that the device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physically separate. The physical unit can be located in one place or distributed across multiple network units. Some or all of the modules can be selected according to actual needs to achieve the objectives of the solutions of the embodiments. In addition, in the drawings of the device embodiments provided in the present application, the connection relationship between the modules indicates that they have a communication connection between them, which can be specifically implemented as one or more communication buses or signal lines. Those of ordinary skill in the art can understand and implement it without creative work.

Through the description of the above embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general hardware. Of course, it can also be implemented by dedicated hardware including dedicated integrated circuits, dedicated CPUs, dedicated memory, Dedicated components and so on to achieve. Under normal circumstances, all functions completed by computer programs can be easily implemented with corresponding hardware. Moreover, the specific hardware structures used to achieve the same function can also be diverse, such as analog circuits, digital circuits or special-purpose circuits. Circuit etc. However, for this application, software program implementation is a better implementation in more cases. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, such as a computer floppy disk. , U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc., including several instructions to make a computer device (which can be A personal computer, server, or network device, etc.) execute the method described in each embodiment of the present application.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part.

The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website site, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

Claims

A method for determining frame error rate, which is characterized in that it is applied to a wireless local area network and includes:

The sending end sends N channel measurement frames to the receiving end, where the channel measurement frames are used to instruct the receiving end to send channel quality parameter statistical values corresponding to the channel measurement frames to the sending end, where N is a positive integer;

Receiving, by the sending end, the channel quality parameter statistical value;

Determining, by the sending end, the weight corresponding to the channel measurement frame according to the statistical value of the channel quality parameter;

The sending end determines the frame error rate between the sending end and the receiving end according to the weight and the N.
The method according to claim 1, wherein the channel quality parameter statistical value comprises a maximum value, a minimum value and an average value of the channel quality parameter;

The sending end determining the weight corresponding to the channel measurement frame according to the channel quality parameter statistical value includes:

Acquiring, by the sending end, a first difference value, where the first difference value is the average value minus the minimum value;

Acquiring, by the sending end, a second difference value, where the second difference value is the maximum value minus the average value;

Acquiring, by the sending end, a comprehensive difference value, where the comprehensive difference value is the absolute value of the difference between the first difference value and the second difference value;

If the comprehensive difference is less than the first preset threshold, the sending end determines the first weight corresponding to the channel measurement frame.
The method according to claim 1 or 2, characterized in that, before the sending end sends N channel measurement frames to the receiving end, the method further comprises:

Acquiring, by the sending end, the first weight, where the first weight is used to indicate that the cause of frame loss is attenuation;

Acquiring, by the sending end, a first condition corresponding to the cause of frame loss being attenuation, where the first condition includes that the comprehensive difference is less than the first preset threshold;

The sending end establishes an association relationship in which the first condition, the first weight, and the cause of frame loss are attenuation.
The method according to any one of claims 1 to 3, wherein after the sending end obtains the integrated difference, the method further comprises:

If the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to the second preset threshold, and the channel quality parameter statistical value is carried in a block confirmation frame BA frame or a multi-user block In the confirmation frame MBA frame, and the first difference is greater than or equal to the second difference, the sending end determines the second weight corresponding to the channel measurement frame, where the BA frame or the MBA frame is The frame sent by the receiving end to the sending end;

If the integrated difference is not less than the first preset threshold, and the integrated difference is greater than or equal to the second preset threshold, and the channel quality parameter statistical value is carried in a BA frame or an MBA frame, and If the first difference is less than the second difference, the sending end determines the first weight corresponding to the channel measurement frame.
The method according to any one of claims 1 to 4, wherein before the sending end sends N channel measurement frames to the receiving end, the method further comprises:

Acquiring, by the sending end, the second weight, where the second weight is used to indicate that the cause of frame loss is interference;

The sending end obtains a second condition corresponding to the cause of the frame loss as interference, where the second condition includes that the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to all The second preset threshold, and the channel quality parameter statistical value is carried in a BA frame or an MBA frame, and the first difference is greater than or equal to the second difference;

The sending end establishes an association relationship in which the second condition, the second weight, and the cause of frame loss are interference.
The method according to any one of claims 1 to 5, wherein before the sending end sends N channel measurement frames to the receiving end, the method further comprises:

Acquiring, by the sending end, the first weight, where the first weight is used to indicate that the cause of frame loss is attenuation;

The sending end obtains a first condition corresponding to the cause of the frame loss being attenuation, where the first condition includes that the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to the first 2. A preset threshold, and the channel quality parameter statistical value is carried in a BA frame or an MBA frame, and the first difference is smaller than the second difference;

The sending end establishes an association relationship in which the first condition, the first weight, and the cause of frame loss are attenuation.
The method according to any one of claims 1 to 6, wherein after the sending end obtains the integrated difference, the method further comprises:

If the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to the second preset threshold, and the channel quality parameter statistical value is carried in the ACK frame of the confirmation frame, and the If the first difference is greater than or equal to the second difference, the sending end determines the second weight corresponding to the channel measurement frame, where the ACK frame is retransmitted by the receiving end to the sending end after hardware retransmission. Frames sent;

If the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to a second preset threshold, and the channel quality parameter statistical value is carried in an ACK frame, and the first If the difference is less than the second difference, the sending end determines the first weight corresponding to the channel measurement frame.
The method according to any one of claims 1 to 7, wherein before the sending end sends N channel measurement frames to the receiving end, the method further comprises:

Acquiring, by the sending end, the second weight, where the second weight is used to indicate that the cause of frame loss is interference;

The sending end obtains a second condition corresponding to the cause of the frame loss as interference, where the second condition includes that the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to the first 2. A preset threshold, and the channel quality parameter statistical value is carried in the ACK frame, and the first difference is greater than or equal to the second difference;

The sending end establishes an association relationship in which the second condition, the second weight, and the cause of frame loss are interference.
The method according to any one of claims 1 to 8, wherein before the sending end sends N channel measurement frames to the receiving end, the method further comprises:

Acquiring, by the sending end, the first weight, where the first weight is used to indicate that the cause of frame loss is attenuation;

The sending end obtains a first condition corresponding to the cause of the frame loss being attenuation, where the first condition includes that the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to the first 2. A preset threshold value, and the channel quality parameter statistical value is carried in an ACK frame, and the first difference value is smaller than the second difference value;

The sending end establishes an association relationship in which the first condition, the first weight, and the cause of frame loss are attenuation.
The method according to any one of claims 1 to 9, wherein the statistical value of the channel quality parameter is carried in an ACK frame, a BA frame or an MBA frame.
The method according to any one of claims 1 to 10, wherein the receiving end multiplexes the ACK frame, the BA frame or the field in the MBA frame to calculate the channel quality parameter statistical value It is carried in the ACK frame, the BA frame or the MBA frame.
The method according to any one of claims 1 to 10, wherein the receiving end inserts an additional field into the ACK frame, the BA frame or the MBA frame to obtain the statistical value of the channel quality parameter. It is carried in the ACK frame, the BA frame or the MBA frame.
The method according to any one of claims 1 to 12, wherein the sending end determining the frame error rate between the sending end and the receiving end according to the weight and the N specifically comprises:

Acquiring, by the sending end, an error frame condition of the channel measurement frame, where the error frame condition includes an error frame with a count value of 1 and a correct frame with a count value of 0;

Determining, by the sending end, the target count value of the error frame according to the count value of the error frame and the weight;

The sending end determines the frame error rate according to the target count value of the error frame and the N.
The method according to any one of claims 1 to 13, wherein after the sending end determines the frame error rate between the sending end and the receiving end according to the weight and the N, the method Also includes:

If the frame error rate is greater than the third threshold, the transmitting end adjusts the transmitting parameters of the transmitting end according to a preset adjustment algorithm.
An access point, characterized by comprising: a processor, and a radio frequency transceiver circuit coupled to the processor;

The processor is configured to send N channel measurement frames to a station through the radio frequency transceiver circuit, where the channel measurement frame is used to instruct the station to send the channel quality parameter corresponding to the channel measurement frame to the access point Statistical value, the N is a positive integer;

The processor is also used for:

Receiving the channel quality parameter statistical value fed back by the station through the radio frequency transceiver circuit;

Determining the weight corresponding to the channel measurement frame according to the channel quality parameter statistical value; and

The frame error rate between the access point and the station is determined according to the weight and the N.
The access point according to claim 15, wherein the statistical value of the channel quality parameter comprises a maximum value, a minimum value and an average value of the channel quality parameter;

The processor is also used for:

Obtaining a first difference value, where the first difference value is the average value minus the minimum value;

Obtaining a second difference value, where the second difference value is the maximum value minus the average value; and

Obtaining a comprehensive difference, where the comprehensive difference is the absolute value of the difference between the first difference and the second difference;

If the comprehensive difference is less than the first preset threshold, the processor determines the first weight corresponding to the channel measurement frame.
The access point according to claim 15 or 16, characterized in that:

If the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to the second preset threshold, and the channel quality parameter statistical value is carried in a block confirmation frame BA frame or a multi-user block In the confirmation frame MBA frame, and the first difference is greater than or equal to the second difference, the processor determines the second weight corresponding to the channel measurement frame, where the BA frame or the MBA frame is The frame sent by the station to the access point;

If the integrated difference is not less than the first preset threshold, and the integrated difference is greater than or equal to the second preset threshold, and the channel quality parameter statistical value is carried in a BA frame or an MBA frame, and If the first difference is less than the second difference, the processor determines the first weight corresponding to the channel measurement frame.
The access point according to any one of claims 15 to 17, wherein:

If the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to the second preset threshold, and the channel quality parameter statistical value is carried in the ACK frame of the confirmation frame, and the If the first difference value is greater than or equal to the second difference value, the processor determines the second weight corresponding to the channel measurement frame, where the ACK frame is retransmitted by the station to the access point after hardware retransmission. Frames sent;

If the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to a second preset threshold, and the channel quality parameter statistical value is carried in an ACK frame, and the first If the difference is less than the second difference, the processor determines the first weight corresponding to the channel measurement frame.
The access point according to any one of claims 15 to 18, wherein the processor is further configured to:

Acquiring an error frame condition of the channel measurement frame, where the error frame condition includes an error frame with a count value of 1 and a correct frame with a count value of 0;

Determining the target count value of the error frame according to the count value of the error frame and the weight; and

The frame error rate is determined according to the target count value of the error frame and the N.
The access point according to any one of claims 15 to 19, characterized in that:

If the frame error rate is greater than the third threshold, the processor adjusts the transmission parameters of the access point according to a preset adjustment algorithm.
A data processing system, which is characterized in that it includes an access point and a station;

The access point is used to send N channel measurement frames to the station, where N is a positive integer;

The station is configured to send the channel quality parameter statistical value corresponding to the channel measurement frame to the access point;

The access point is also used to receive the channel quality parameter statistical value;

The access point is further configured to determine the weight corresponding to the channel measurement frame according to the channel quality parameter statistical value;

The access point is further configured to determine a frame error rate between the access point and the station according to the weight and the N.
The system according to claim 21, wherein the channel quality parameter statistical value comprises a maximum value, a minimum value and an average value of the channel quality parameter;

The access point is also used for:

Obtaining a first difference value, where the first difference value is the average value minus the minimum value;

Obtaining a second difference value, where the second difference value is the maximum value minus the average value; and

Obtaining a comprehensive difference, where the comprehensive difference is the absolute value of the difference between the first difference and the second difference;

If the comprehensive difference is less than the first preset threshold, the access point determines the first weight corresponding to the channel measurement frame.
The system according to claim 21 or 22, wherein:

If the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to the second preset threshold, and the channel quality parameter statistical value is carried in a block confirmation frame BA frame or a multi-user block In the confirmation frame MBA frame, and the first difference is greater than or equal to the second difference, the access point determines the second weight corresponding to the channel measurement frame, where the BA frame or the MBA frame Is the frame sent by the station to the access point;

If the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to the second preset threshold, and the channel quality parameter statistical value is carried in a BA frame or an MBA frame, and If the first difference is less than the second difference, the access point determines the first weight corresponding to the channel measurement frame.
The system according to any one of claims 21 to 23, wherein:

If the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to the second preset threshold, and the channel quality parameter statistical value is carried in the ACK frame of the confirmation frame, and the If the first difference is greater than or equal to the second difference, the access point determines the second weight corresponding to the channel measurement frame, where the ACK frame is the hardware retransmission of the station to the access point. Point sent frame;

If the comprehensive difference is not less than the first preset threshold, and the comprehensive difference is greater than or equal to a second preset threshold, and the channel quality parameter statistical value is carried in an ACK frame, and the first If the difference is less than the second difference, the access point determines the first weight corresponding to the channel measurement frame.
The system according to any one of claims 21 to 24, wherein the access point is further used for:

Acquiring an error frame condition of the channel measurement frame, where the error frame condition includes an error frame with a count value of 1 and a correct frame with a count value of 0;

Determining the target count value of the error frame according to the count value of the error frame and the weight; and

The frame error rate is determined according to the target count value of the error frame and the N.
The system according to any one of claims 21 to 25, wherein if the frame error rate is greater than a third threshold, the access point adjusts the transmission parameters of the access point according to a preset adjustment algorithm.
A computer-readable storage medium, comprising instructions, which when run on a computer, cause the computer to execute the method according to any one of claims 1 to 14.
A computer program product containing instructions that, when run on a computer, causes the computer to execute the method according to any one of claims 1 to 14.