CN114586300A

CN114586300A - Method for determining frame error rate and related device

Info

Publication number: CN114586300A
Application number: CN201980101599.9A
Authority: CN
Inventors: 高林; 李文俊; 郭湛
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2022-06-03
Also published as: WO2021081889A1

Abstract

In the technical scheme, a sending end sends N channel measurement frames to a receiving end, the receiving end determines a channel quality parameter statistic value corresponding to each channel measurement frame according to the receiving condition of the channel measurement frames and feeds the channel quality parameter statistic value back to the sending end, and then the sending end receives the channel quality parameter statistic value. The sending end can determine the weight corresponding to the channel measurement frame according to the channel quality parameter statistic value. And finally, the sending end determines the frame error rate between the sending end and the receiving end according to the weight and the number N of the channel measurement frames. In the embodiment of the application, different channel quality parameter statistics values can be obtained for different frame loss reasons, and the sending end can determine the weight corresponding to each frame loss reason according to the channel quality parameter statistics values. The error frame rate calculated by the sending end according to the weight can accurately reflect the link condition, and the sending end has better effect when carrying out optimization adjustment.

Description

Method for determining frame error rate and related device

Technical Field

The present invention relates to the field of communications, and in particular, to a method for determining a frame error rate and a related apparatus.

Background

With the development of communication technology, network communication is widely applied to terminal devices. The terminal equipment is connected with other terminal equipment or a server through network communication to realize information transmission. Wireless Local Area Networks (WLANs) enable various terminal devices to get rid of the constraint of cables, which is convenient for people's life.

Compared with a stable and reliable wired environment, the time-varying characteristic of a wireless channel requires that various receiving and transmitting parameters can be automatically adjusted to adapt to the channel environment, so that quality of service (QoS) is guaranteed. In the current automatic tuning scheme, the sender typically performs automatic tuning according to the IEEE 802.11 protocol of the wireless network standard of the Institute of Electrical and Electronics Engineers (IEEE). For example, in the rate adaptive algorithm (auto), a transmitting end transmits a sounding frame to a receiving end by using different Modulation and Coding Schemes (MCS). And after receiving the detection frame, the receiving end sends the information of the receiving end to the sending end so that the sending end can adjust various sending parameters.

However, in the rate adaptive algorithm, the sending end performs Frame Error Rate (FER) statistics according to the information of the receiving end, the sending end does not analyze the reason of frame loss, and the frame error rate obtained through statistics cannot accurately reflect the link condition. For example, when a frame is lost due to interference in most of frames sent from a sending end to a receiving end, reducing a link rate cannot solve the problem of frame loss due to interference, but at this time, a frame error rate counted by the sending end is relatively high, and an optimization measure for reducing the link rate is still adopted.

Disclosure of Invention

The embodiment of the application provides a method and a related device for determining a frame error rate, wherein a sending end can give corresponding weights to channel measurement frames according to different frame loss reasons, and the frame error rate obtained through statistics can accurately reflect link conditions, so that the frame error rate statistics is more accurate.

A first aspect of an embodiment 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, wherein the channel measurement frames are used for indicating the receiving end to send channel quality parameter statistics values corresponding to the channel measurement frames to the sending end, and N is a positive integer; the sending end receives the channel quality parameter statistic value; the sending end determines the weight corresponding to the channel measurement frame according to the channel quality parameter statistic value; and 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 the application, a sending end sends N channel measurement frames to a receiving end, the receiving end determines a channel quality parameter statistic value corresponding to each channel measurement frame according to the receiving condition of the channel measurement frames and feeds the channel quality parameter statistic value back to the sending end, and then the sending end receives the channel quality parameter statistic value. The sending end can determine the weight corresponding to the channel measurement frame according to the channel quality parameter statistic value. And finally, the sending end determines the frame error rate between the sending end and the receiving end according to the weight and the number N of the channel measurement frames. In the embodiment of the application, different channel quality parameter statistics values can be obtained for different frame loss reasons, the sending end can determine the weight corresponding to each frame loss reason according to the channel quality parameter statistics values, for important frame loss reasons, the sending end can set a higher weight, for irrelevant frame loss reasons, the sending end can set a lower weight, and then the frame error rate is determined according to the weights 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 condition, and the effect is better when the sending end performs optimization adjustment. For example, the sending end associates a second condition and a lower second weight in advance according to the frame loss reason, i.e., interference, and if the channel quality parameter received by the sending end satisfies the second condition, it indicates that the frame loss reason of the channel measurement frame is interference, and the sending end determines the second weight corresponding to the channel measurement frame. Even if a large number of frames are lost due to interference during the frame error rate statistics, the frame error rate can still be low because the second weight is low, and the sending end cannot mistakenly reduce the link rate due to the frame loss caused by the interference.

With reference to the first aspect of the present embodiment, in a first implementation manner of the first aspect of the present embodiment, the channel quality parameter statistic includes a maximum value, a minimum value, and an average value of the channel quality parameter; the step of the sending end determining the weight corresponding to the channel measurement frame according to the channel quality parameter statistic value comprises the following steps: the sending end obtains a first difference value, and the first difference value is obtained by subtracting the minimum value from the average value; the sending end obtains a second difference value, and the second difference value is obtained by subtracting the average value from the maximum value; the sending end obtains a comprehensive difference value, wherein the comprehensive difference value is an absolute value of the difference between the first difference value and the second difference value; and if the comprehensive difference value is smaller than a first preset threshold value, the sending end determines a first weight corresponding to the channel measurement frame.

With reference to the first aspect of the present application and the first implementation manner of the present application, in a second implementation manner of the first aspect 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, and the first weight is used for indicating that the reason of frame loss is attenuation; the sending end acquires a first condition corresponding to attenuation of the frame loss reason, wherein the first condition comprises that the comprehensive difference value is smaller than the first preset threshold value; the transmitting end establishes the incidence relation of the first condition, the first weight and the frame loss reason due to attenuation.

With reference to the first aspect of the embodiment of the present application and any one of the first to second implementation manners of the embodiment of the present application, in a third implementation manner of the first aspect of the embodiment of the present application, after the sending end obtains the comprehensive difference value, the method further includes: if the comprehensive difference value is not less than the first preset threshold value, the comprehensive difference value is greater than or equal to a second preset threshold value, the channel quality parameter statistic value is carried in a Block Acknowledgement (BA) frame or a multi-user block acknowledgement (MBA) frame, and the first difference value is greater than or equal to the second difference value, the sending end determines a second weight corresponding to the channel measurement frame, wherein the BA frame or the MBA frame is a frame sent to the sending end by the receiving end; and if the comprehensive difference value is not less than the first preset threshold value, the comprehensive difference value is greater than or equal to a second preset threshold value, the channel quality parameter statistic value is carried in a BA frame or an MBA frame, and the first difference value is less than the second difference value, the transmitting end determines the first weight corresponding to the channel measurement frame.

With reference to the first aspect of the embodiment of the present application and any one of the first to third implementation manners of the first aspect of the embodiment of the present application, in a fourth implementation manner of the first aspect of the embodiment of the present application, before the sending, by the sending end, N channel measurement frames to the receiving end, the method further includes: the sending end acquires the second weight, and the second weight is used for indicating that the reason of frame loss is interference; the sending end acquires a second condition corresponding to the frame loss reason being interference, wherein the second condition comprises that the comprehensive difference is not less than the first preset threshold, the comprehensive difference is greater than or equal to the second preset threshold, the channel quality parameter statistic 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 incidence relation of the second condition, the second weight and the frame loss reason as interference.

With reference to the first aspect of the present embodiment and any one of the first to fourth implementation manners of the first aspect of the present embodiment, in a fifth implementation manner of the first aspect of the present embodiment, before the sending, by the sending end, N channel measurement frames to the receiving end, the method further includes: the sending end obtains the first weight, and the first weight is used for indicating that the reason of frame loss is attenuation; the sending end acquires a first condition corresponding to the frame loss reason being attenuation, wherein the first condition comprises that the comprehensive difference is not less than a first preset threshold, the comprehensive difference is greater than or equal to a second preset threshold, the channel quality parameter statistic is carried in a BA frame or an MBA frame, and the first difference is less than the second difference; the transmitting end establishes the incidence relation of the first condition, the first weight and the frame loss reason due to attenuation.

With reference to the first aspect of the embodiment of the present application and any one of the first to fifth implementation manners of the first aspect of the embodiment of the present application, in a sixth implementation manner of the first aspect of the embodiment of the present application, after the sending end obtains the comprehensive difference value, the method further includes: if the comprehensive difference value is not less than the first preset threshold value, the comprehensive difference value is greater than or equal to a second preset threshold value, the channel quality parameter statistic value is carried in an acknowledgement frame (ACK) frame, and the first difference value is greater than or equal to the second difference value, the sending end determines a second weight corresponding to the channel measurement frame, wherein the ACK frame is a frame sent to the sending end after the receiving end is retransmitted by hardware; and if the comprehensive difference value is not less than the first preset threshold value, the comprehensive difference value is greater than or equal to a second preset threshold value, the channel quality parameter statistic value is carried in an ACK frame, and the first difference value is less than the second difference value, the sending end determines the first weight corresponding to the channel measurement frame.

With reference to the first aspect of the present embodiment and any one of the first to sixth implementation manners of the first aspect of the present embodiment, in a seventh implementation manner of the first aspect of the present embodiment, before the sending, by the sending end, N channel measurement frames to the receiving end, the method further includes: the sending end acquires the second weight, and the second weight is used for indicating that the reason of frame loss is interference; the sending end acquires a second condition corresponding to the frame loss reason being interference, wherein the second condition comprises that the comprehensive difference is not less than the first preset threshold, the comprehensive difference is greater than or equal to a second preset threshold, the channel quality parameter statistic is carried in an ACK frame, and the first difference is greater than or equal to the second difference; the sending end establishes the incidence relation of the second condition, the second weight and the frame loss reason as interference.

With reference to the first aspect of the embodiment of the present application and any one of the first to seventh implementation manners of the first aspect of the embodiment of the present application, in an eighth implementation manner of the first aspect of the embodiment of the present application, before the sending, by the sending end, N channel measurement frames to the receiving end, the method further includes: the sending end obtains the first weight, and the first weight is used for indicating that the reason of frame loss is attenuation; the sending end acquires a first condition corresponding to the frame loss reason being attenuation, wherein the first condition comprises that the comprehensive difference is not less than a first preset threshold, the comprehensive difference is greater than or equal to a second preset threshold, the channel quality parameter statistic is carried in an ACK frame, and the first difference is less than the second difference; the transmitting end establishes the incidence relation of the first condition, the first weight and the frame loss reason due to attenuation.

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

With reference to the first aspect of the embodiment of the present application and any one of the first to ninth implementation manners of the first aspect of the embodiment of the present application, in a tenth implementation manner of the first aspect of the embodiment of the present application, the receiving end multiplexes the ACK frame, and a field in the BA frame or the MBA frame carries the channel quality parameter statistics value in the ACK frame, the BA frame, or the MBA frame.

With reference to the first aspect of the embodiment of the present application and any one of the first to tenth implementation manners of the first aspect of the embodiment of the present application, in an eleventh implementation manner of the first aspect of the embodiment of the present application, the receiving end inserts an extra field into the ACK frame, the BA frame, or the MBA frame to carry the channel quality parameter statistic in the ACK frame, the BA frame, or the MBA frame.

With reference to the first aspect of the embodiment of the present application and any one of the first to eleventh implementation manners of the first aspect of the embodiment of the present application, in a twelfth implementation manner of the first aspect of the embodiment of the present application, the determining, by the sending end, a 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, wherein the frame error condition comprises a frame error with a count value of 1 and a correct frame with a count value of 0; the sending end determines a target counting value of the error frame according to the counting value of the error frame and the weight; and the sending end determines the frame error rate according to the target counting value of the frame error and the N.

With reference to the first aspect of the embodiment of the present application, and any one of the first to twelfth implementation manners of the first aspect of the embodiment of the present application, in a thirteenth implementation manner of the first aspect of the embodiment of the present application, after the determining, by the sending end, a frame error rate between the sending end and the receiving end according to the weight and the N, the method further includes: and if the frame error rate is greater than a third threshold, the sending end adjusts the sending parameters of the sending end according to a preset adjusting 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, where the channel measurement frames are used to instruct the receiving end to send channel quality parameter statistics corresponding to the channel measurement frames to the sending end, and N is a positive integer; an obtaining unit, configured to receive the channel quality parameter statistic; the processing unit is used for determining the weight corresponding to the channel measurement frame according to the channel quality parameter statistic value; the processing unit is further configured to determine a 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 a first implementation manner of the second aspect of the embodiments of the present application, the channel quality parameter statistics include a maximum value, a minimum value, and an average value of the channel quality parameter; the processing unit is further configured to obtain a first difference value, where the first difference value is the average value minus the minimum value; the processing unit is further configured 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 composite difference value, where the composite difference value is an absolute value of a difference between the first difference value and the second difference value; the processing unit is further configured to determine a first weight corresponding to the channel measurement frame if the integrated difference is smaller than a first preset threshold.

With reference to the second aspect of the embodiment of the present application and the first implementation manner of the second aspect of the embodiment of the present application, in the second implementation manner of the second aspect of the embodiment of the present application, the processing unit is further configured to obtain the first weight, where the first weight is used to indicate that the reason for frame loss is attenuation; the processing unit is further configured to obtain a first condition corresponding to the frame loss reason being attenuation, where the first condition includes that the composite difference is smaller than the first preset threshold; the processing unit is further configured to establish an association relationship between the first condition, the first weight, and the frame loss reason due to attenuation.

With reference to the second aspect of the present embodiment and any one of the first to second implementation manners of the second aspect of the present embodiment, in a third implementation manner of the second aspect of the present embodiment, the processing unit is further configured to determine a second weight corresponding to the channel measurement frame if the integrated difference is not smaller than the first preset threshold, and the integrated difference is greater than or equal to a second preset threshold, and the channel quality parameter statistic is carried in a block acknowledgement frame BA frame or a multi-user block acknowledgement frame MBA frame, and the first difference is greater than or equal to a second difference, where the BA frame or the MBA frame is a frame sent by the receiving end to the sending end; the processing unit is further configured to determine the first weight corresponding to the channel measurement frame if the integrated difference is not smaller than the first preset threshold, the integrated difference is greater than or equal to a second preset threshold, the channel quality parameter statistic is carried in a BA frame or an MBA frame, and the first difference is smaller than the second difference.

With reference to the second aspect of the embodiment of the present application and any one of the first to third implementation manners of the second aspect of the embodiment of the present application, in a fourth implementation manner of the second aspect of the embodiment of the present application, the processing unit is further configured to obtain the second weight, where the second weight is used to indicate that the reason for frame loss is interference; the processing unit is further configured to obtain a second condition corresponding to the frame loss reason being interference, where the second condition includes that the combined difference is not less than the first preset threshold, the combined difference is greater than or equal to the second preset threshold, the channel quality parameter statistic is carried in a BA frame or 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 frame loss cause due to interference.

With reference to the second aspect of the embodiment of the present application and any one of the first to fourth implementation manners of the second aspect of the embodiment of the present application, in a fifth implementation manner of the second aspect of the embodiment of the present application, the processing unit is further configured to obtain the first weight, where the first weight is used to indicate that the reason for frame loss is attenuation; the processing unit is further configured to obtain a first condition corresponding to the frame loss reason being attenuation, where the first condition includes that the combined difference is not less than the first preset threshold, the combined difference is greater than or equal to a second preset threshold, the channel quality parameter statistic is carried in a BA frame or an MBA frame, and the first difference is less than the second difference; the processing unit is further configured to establish an association relationship among the first condition, the first weight, and the frame loss factor due to attenuation.

With reference to the second aspect of the present embodiment and any one of the first to fifth implementation manners of the second aspect of the present embodiment, in a sixth implementation manner of the second aspect of the present embodiment, the processing unit is further configured to determine a second weight corresponding to the channel measurement frame if the integrated difference is not smaller than the first preset threshold, the integrated difference is greater than or equal to a second preset threshold, the channel quality parameter statistic is carried in an ACK frame, and the first difference is greater than or equal to the second difference, where the ACK frame is a frame that is sent to the sending end after being retransmitted by hardware by the receiving end; the processing unit is further configured to determine the first weight corresponding to the channel measurement frame if the integrated difference is not smaller than the first preset threshold, the integrated difference is greater than or equal to a second preset threshold, the channel quality parameter statistic is carried in an ACK frame, and the first difference is smaller than the second difference.

With reference to the second aspect of the embodiment of the present application and any one of the first to sixth implementation manners of the second aspect of the embodiment of the present application, in a seventh implementation manner of the second aspect of the embodiment of the present application, the processing unit is further configured to obtain the second weight, where the second weight is used to indicate that the reason for the frame loss is interference; the processing unit is further configured to acquire a second condition corresponding to the frame loss reason being interference, where the second condition includes that the combined difference is not less than the first preset threshold, the combined difference is greater than or equal to a second preset threshold, the channel quality parameter statistic 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 frame loss cause due to interference.

With reference to the second aspect of the embodiment of the present application and any one of the first to seventh implementation manners of the second aspect of the embodiment of the present application, in an eighth implementation manner of the second aspect of the embodiment of the present application, the processing unit is further configured to obtain the first weight, where the first weight is used to indicate that the reason for the frame loss is attenuation; the processing unit is further configured to obtain a first condition corresponding to the frame loss reason being attenuation, where the first condition includes that the combined difference is not less than the first preset threshold, the combined difference is greater than or equal to a second preset threshold, the channel quality parameter statistic is carried in an ACK frame, and the first difference is less than the second difference; the processing unit is further configured to establish an association relationship among the first condition, the first weight, and the frame loss factor due to attenuation.

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

With reference to the second aspect of the present embodiment and any one of the first to ninth implementation manners of the second aspect of the present embodiment, in a tenth implementation manner of the second aspect of the present embodiment, the receiving end multiplexes the ACK frame, and a field in the BA frame or the MBA frame carries the channel quality parameter statistic in the ACK frame, the BA frame or the MBA frame.

With reference to the second aspect of the present embodiment and any one of the first to tenth implementation manners of the second aspect of the present embodiment, in an eleventh implementation manner of the second aspect of the present embodiment, the receiving end inserts an extra field into the ACK frame, the BA frame, or the MBA frame to carry the channel quality parameter statistic in the ACK frame, the BA frame, or the MBA frame.

With reference to the second aspect of the embodiment of the present application and any one of the first to eleventh implementation manners of the second aspect of the embodiment of the present application, in a twelfth implementation manner of the second aspect of the embodiment of the present application, the processing unit is further configured to acquire a frame error condition of the channel measurement frame, where the frame error condition includes a frame error with a count value of 1 and a correct frame with a count value of 0; the processing unit is further used for determining a target count value of the error frame according to the count value of the error frame and the weight; the processing unit is further configured to determine the frame error rate according to the target count value of the frame error and the N.

With reference to the second aspect of the embodiment of the present application and any one of the first to twelfth implementation manners of the second aspect of the embodiment of the present application, in a thirteenth implementation manner of the second aspect of the embodiment of the present application, the processing unit is further configured to adjust the transmission parameter 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 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 frames are used to instruct the station to send channel quality parameter statistics corresponding to the channel measurement frames to the access point, where N is a positive integer; the processor is further configured to: receiving the channel quality parameter statistic 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 statistic value; and determining a frame error rate between the access point and the site according to the weight and the N.

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 perform any one of the methods of the first aspect described above.

A fourth aspect of the present embodiment provides a data processing system, including an access point and a station; the access point is used for sending N channel measurement frames to a station, wherein N is a positive integer; the station is used for sending the channel quality parameter statistic corresponding to the channel measurement frame to the access point; the access point is further configured to receive the channel quality parameter statistics; the access point is further used for determining the weight corresponding to the channel measurement frame according to the channel quality parameter statistic 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.

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 perform any one of the methods of the first aspect.

A fifth aspect of embodiments of the present application provides a computer-readable storage medium, comprising instructions that, when executed on a computer, cause the computer to perform any one of the methods according to the first aspect.

A sixth aspect of embodiments of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform any one of the methods according to the first aspect above.

In the technical scheme provided by the embodiment of the application, a sending end sends N channel measurement frames to a receiving end, the receiving end determines the channel quality parameter statistic value corresponding to each channel measurement frame according to the receiving condition of the channel measurement frames and feeds the channel quality parameter statistic value back to the sending end, and then the sending end receives the channel quality parameter statistic value. The sending end can determine the weight corresponding to the channel measurement frame according to the channel quality parameter statistic value. And finally, the sending end determines the frame error rate between the sending end and the receiving end according to the weight and the number N of the channel measurement frames. In the embodiment of the application, different channel quality parameter statistics values can be obtained for different frame loss reasons, the sending end can determine the weight corresponding to each frame loss reason according to the channel quality parameter statistics values, for important frame loss reasons, the sending end can set higher weight, for irrelevant frame loss reasons, the sending end can set lower weight, and then the frame error rate is determined according to the weight and the number of channel measurement frames. The error frame rate calculated by the sending end according to the weight can accurately reflect the link condition, and the sending end has better effect when carrying out optimization adjustment.

Drawings

Fig. 1 is an exemplary diagram illustrating a transmitting end and a receiving end communicating via a WLAN frame in an embodiment of the present application;

fig. 2 is an exemplary diagram of a channel between a current transmitting end and a receiving end;

FIG. 3 is a diagram illustrating a method for determining a frame error rate according to an embodiment of the present disclosure;

fig. 4 is a diagram illustrating an example of communication between a transmitting end and a receiving end in an embodiment of the present application;

fig. 5 is a diagram illustrating an example of a MAC frame in an embodiment of the present application;

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

fig. 7 is an exemplary diagram of an ACK frame in an embodiment of the present application;

fig. 8 is a diagram illustrating an example of an ack frame in an embodiment of the present application;

fig. 9 is an exemplary diagram of a BA frame in an embodiment of the present application;

FIG. 10 is a diagram of another example of an acknowledgment frame in an embodiment of the present application;

fig. 11 is an exemplary diagram of an access point in an embodiment of the present application;

FIG. 12 is an exemplary diagram of a site in an embodiment of the present application;

fig. 13 is a diagram illustrating an example of a system for data processing in an embodiment of the present application.

Detailed Description

The terms "first," "second," "third," "fourth," and the like in the description and claims of this application and in the above-described drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "corresponding" and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present relevant concepts in a concrete fashion.

For clarity and conciseness of the following descriptions of the various embodiments, a brief introduction to the related art is first given:

wireless Local Area Networks (WLANs) refer to a network system that uses wireless communication technology to interconnect computer devices and can communicate with each other and realize resource sharing. The wireless local area network is essentially characterized in that a communication cable is not used for connecting a computer with a network, but the computer is connected in a wireless mode, so that the network construction and the terminal movement are more flexible.

Among them, wireless communication (wireless communication) is a communication method for exchanging information by using a characteristic that an electromagnetic wave signal can propagate in a free space. In a WLAN, a transmitting end and a receiving end exchange information in a certain channel generally through a WLAN frame. The channel (channel) may be a wireless channel in the embodiment of the present application, and is a data signal transmission channel using a wireless signal as a transmission medium, and is generally divided according to a frequency band used by the wireless signal. Wherein the radio signals are transmitted in the link layer in the form of WLAN frames. The WLAN frames may include, but are not limited to, data frames, control frames, management frames, sounding frames, traffic frames, non-traffic frames, and the like.

Fig. 1 is an exemplary diagram illustrating a transmitting end and a receiving end communicating through a WLAN frame in an embodiment of the present application. It can be seen that one sender 101 may communicate with multiple receivers 102. The sending end 101 and the receiving end 102 may be the same type of device, or different types of devices, and specifically may be a base station, a wireless Access Point (AP), a router, an electronic device, or the like. The electronic device can be a mobile phone, a smart watch, a smart sound box and the like, and the embodiment of the application does not limit the electronic device. It is understood that in some embodiments, the transceiving relationship of the transmitting end 101 and the receiving end 102 may be interchanged. For example, the mobile phone can also be used as a sending end to communicate with other mobile phones.

In the communication process between the transmitting end and the receiving end, the time-varying characteristic of the wireless channel requires that various receiving and transmitting parameters can be automatically adjusted to adapt to the channel environment, thereby ensuring quality of service (QoS). Currently, the sender typically performs automatic adjustment according to the IEEE 802.11 protocol.

Fig. 2 is a diagram illustrating an example of a channel between a current transmitting end and a current receiving end. Included in fig. 2 are a first channel 21 and a second channel 22. The first channel 21 is divided into an upper half and a lower half by an arrow, the upper half of the first channel 21 displays a WLAN frame transmitted from a transmitting end to a receiving end, and the lower half of the first channel 21 displays a WLAN frame transmitted from the receiving end to the transmitting end. The second channel 22 is similar to the first channel 21 and will not be described in detail here. The transmitting end first transmits a sounding frame 201 to the receiving end through a first channel 21. The sounding frame 201 may be a data frame, a management frame, a control frame, or other proprietary format frame. The probe frame 201 may include additional information, where the additional information is used to instruct the receiving end to send an information feedback frame 203 to the transmitting end, and after receiving the probe frame 201, the receiving end returns an acknowledgement frame 202 to the transmitting end through the first channel according to the IEEE 802.11 protocol. And, the receiving end statistically obtains channel quality information in response to the additional information in the sounding frame 201. The channel quality information may include, but is not limited to, statistics on granularity per spatial stream, per symbol, per 20MHz bandwidth, etc. for metrics such as queue length, channel load, packet error rate, signal-to-noise ratio (SNR)/Error Vector Magnitude (EVM)/Received Signal Strength (RSSI) of the sounding frame 201, etc. In some embodiments, the transmitting end may transmit multiple wireless signals at the same time, and each wireless signal may be referred to as a spatial stream. The spatial streams may be transmitted through antennas at the transmitting end, and each spatial stream may reach the receiving end through a different path. Then, the receiving end may generate an information feedback frame 203, where the information feedback frame may carry channel quality information counted by the receiving end. The information feedback frame 203 may be one of a data frame, a management frame, a control frame, a traffic frame, and a non-traffic frame. For example, the receiving end may determine that the channel used for transmitting the information feedback frame 203 is the second channel 22 through channel contention. The receiving end then transmits an information feedback frame 203 to the transmitting end through the second channel 22.

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

When most of the probe frames 201 are lost due to interference, the sending end reduces the link rate and cannot solve the problem of frame loss due to interference. However, at this time, the frame error rate counted by the sending end according to the channel quality information is higher, and the sending end still takes an adjustment measure for reducing the link rate. Therefore, the above method easily causes a technical problem of erroneously lowering the link rate.

In order to solve the above problem, an embodiment of the present application provides a method for determining a frame error rate, as shown in fig. 3, including:

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

in some embodiments, the channel measurement frame refers to a WLAN frame used for channel measurement, and may be a traffic frame or a non-traffic frame that is self-constructed by the transmitting end. 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, similar to the sounding frame 201, which is not described herein again.

302. The receiving end determines a channel quality parameter statistic value according to the receiving condition of the channel measurement frame;

in an embodiment of the present application, the channel measurement frame may include a plurality of subframes, and each subframe may include a plurality of symbols. Illustratively, a certain channel measurement frame includes 10 subframes, each subframe including 14 symbols, and 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 receiving condition of the channel measurement frame. Illustratively, the channel measurement frame includes 140 symbols, the receiving end can determine 140 SNRs. Then, the receiving end may count the maximum, minimum, and average values of all SNRs. For example, after the receiving end determines 140 SNRs, the maximum value, the minimum value and the average value of the 140 SNRs may be counted.

In some embodiments, the receiving end may determine the EVM corresponding to each symbol in the channel measurement frame according to the channel measurement frame receiving condition. Illustratively, 140 symbols are included in the channel measurement frame, the receiving end can determine 140 EVMs. Then, the receiving end may count the maximum value, the minimum value, and the average value of all EVMs. For example, after the receiving end determines 140 SNRs, the maximum value, the minimum value, and the average value of the 140 EVMs may be counted.

In practical application, the receiving end may also determine other channel quality parameters in the channel measurement frame according to the receiving condition of the channel measurement frame, and determine the maximum value, the minimum value, and the average value thereof, which is not described herein again. It is to be understood that the channel quality parameter may be the SNR and the EVM, or may be RSSI, and the embodiment of the present application does not limit this. The channel quality parameter statistic may be a maximum value, a minimum value, and an average value of the channel quality parameter, and in practical application, the channel quality parameter statistic may also be other statistics values, such as a standard deviation, and the like. In this embodiment of the application, the channel corresponding to the channel quality parameter may be a channel used by a channel measurement frame currently received by the receiving end, as shown in fig. 4, when the transmitting end transmits the channel measurement frame to the receiving end through a third channel 41, the channel corresponding to the channel quality parameter is the third channel 41.

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

in this embodiment, the receiving end may send the channel quality parameter statistic to the sending end through the acknowledgement frame. For example, the receiving end may carry the channel quality parameter statistics in an acknowledgement frame, and then send the acknowledgement frame to the transmitting end. In the embodiment of the application, the receiving end can directly carry the channel quality parameter statistic in the confirmation frame, and the channel quality parameter statistic does not need to be transmitted through the information feedback frame. Therefore, the receiving end can send the channel quality parameter statistic to the sending end without channel competition, and collision overhead caused by channel competition is avoided.

In some embodiments, the acknowledgement frame may be an Acknowledgement (ACK) frame. The ACK frame is a control frame for feeding back an acknowledgement of receipt of the channel measurement frame to the transmitting end.

In other embodiments, the acknowledgement frame may be a Block Acknowledgement (BA) frame or a multi-user block acknowledgement (MBA) frame. When the frame aggregation technique (FrameAggregation) is used for communication between the transmitting end and the receiving end, the receiving end generally uses a BA frame or an MBA frame to feed back an acknowledgment to the transmitting end that the channel measurement frame is received. The frame aggregation technique may include aggregation for MSDUs (a-MSDUs) and aggregation for MPDUs (a-MPDUs), which are not limited in this application.

304. The sending end determines the weight corresponding to the channel measurement frame according to the channel quality parameter statistic value;

in the embodiment of the application, a sending end firstly receives an acknowledgement frame of a receiving end, and the acknowledgement frame carries a channel quality parameter statistic value. Then, the sending end can determine the weight corresponding to the channel measurement frame according to the channel quality parameter statistic value. In some embodiments, the sending end presets the association relationship between the frame loss reason, the judgment condition and the weight. Illustratively, table 1 is an example of the association relationship in the embodiment of the present application. In some embodiments, the determination condition may include a first condition and a second condition, and for convenience of description, the embodiments of the present application are collectively referred to as the determination condition.

TABLE 1

Judgment of conditions	Weight of	Reason for frame loss
D<D _th1	First weight	Attenuation of
D is more than or equal to Dth 2, the confirmed frame is a BA frame or an MBA frame, and Dmin is more than or equal to Dmax	Second weight	Interference
D is more than or equal to Dth 2, the frame is confirmed to be a BA frame or an MBA frame, and Dmin Dmax >	First weight	Attenuation of
D is more than or equal to Dth 2, the acknowledgement frame is an ACK frame, and hardware retransmission occurs, Dmin is more than or equal to Dmax	Second weight	Interference
D is more than or equal to Dth 2, the confirmed frame is an ACK frame, and hardware retransmission occurs, Dmin < Dmax >	First weight	Attenuation of

In Table 1, D_min＝avg-min，D _max＝max-avg，D＝|D _min-D _maxWhere avg is the average value of the channel quality parameters, min is the minimum value of the channel quality parameters, and max is the maximum value of the channel quality parameters. Illustratively, if the receiving end statistically obtains 140 SNRs, avg is an average value of 140 SNRs, min is a minimum value of 140 SNRs, and max is a maximum value of 140 SNRs. The sending end can receive avg, min and max, and then D is obtained through calculation_min、D _maxAnd D.

In some embodiments, the sending end may preset D_th1And D_th2. Wherein D is_th1Is a first predetermined threshold value, D_th2Is a second preset threshold. Illustratively, the worker will D_th1And D_th2The specific values are input to the sending end, and then the sending end can record the two values and use the two values as a first preset threshold value and a second preset threshold value. The implementation manner of recording the first preset threshold and the second preset threshold by the sending end may be that the sending end stores the first preset threshold and the second preset threshold in a database, or that the sending end stores the first preset threshold and the second preset threshold through a memory of a chip.

In some embodiments, D_th1May be equal to D_th2. In other embodiments, D_th1May be less than D_th2. At this time, a situation may occur in which the channel quality parameter statistics carried by the acknowledgement frame do not satisfy all the determination conditions in table 1. If the sending end determines that the channel quality parameter statistic carried by the acknowledgement frame does not satisfy all the determination conditions in table 1, the sending end may set the weight of the corresponding channel measurement frame as the third weight.

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

In some embodiments, the sender receives the acknowledgement frame from the receiverThe type of the ack frame can be determined, and avg, min, and max are extracted from the ack frame and then calculated to obtain D_min、D _maxAnd D. The type of the acknowledgement frame may be an ACK frame, a BA frame, or an MBA frame. The weight of the corresponding channel measurement frame is then determined according to the judgment conditions as in table 1.

In some embodiments, if a frame aggregation technique is used in communication between the sender and the receiver, the sender defaults that the acknowledgment frame of the receiver is a BA frame or an MBA frame. In some embodiments, if an automatic repeat request (ARQ) is used when the sending end and the receiving end communicate, the sending end determines that an acknowledgement frame of the receiving end is an ACK frame, and further determines whether the ACK frame is an ACK frame sent by the receiving end after hardware retransmission.

It can be understood that the frame loss reasons in table 1 have a correlation with the weights, for example, the frame loss reason associated with the first weight is attenuation, and the frame loss reason associated with the second weight is interference. In practical application, the sending end may also set other determination conditions, weights, and frame loss reasons, which are not limited in this application embodiment.

In the embodiment of the present application, SNR is a simple term of Signal to Interference plus Noise ratio (SINR), where SINR is Signal/(Interference + Noise), where Signal represents the power of a useful Signal measured by a receiving end, Interference represents the power of a Signal or a channel Interference Signal measured by the receiving end, including Interference of other cells in the system and Interference of an alien system, and Noise represents low Noise, and is related to a specific measurement bandwidth and a receiver Noise factor. Based on this SINR calculation formula, it can be considered that fading is a case where Signal is relatively small, and Interference (or collision) is a case where Interference is relatively large. Both fading and interference situations result in a small SINR value, so that the transmitting end makes the same determination on the channel quality in both situations. Therefore, in some embodiments, the transmitting end sets different weights according to the two situations, so that the transmitting end makes different judgments on the channel quality in the two situations.

When the frame loss reason is attenuation, the power of the useful signal measured by the receiving end is relatively low, so that when the transmitting end performs adjustment, the power of the useful signal can be increased to reduce frame loss. When counting the frame loss caused by attenuation, the sending end can give higher weight to the frame error count value to make proper adjustment. When the frame loss is caused by Interference, the Interference is generally a situation with a large Interference, that is, the power of the channel Interference signal is large, and at this time, the sending end is generally difficult to adjust, and the Interference situation should be manually checked. Therefore, when counting the frame loss caused by interference, the sending end can give a lower weight to the frame error count value, thereby avoiding the error adjustment caused by interference. In some embodiments, the first weight is set to be greater than the second weight by the sender. For example, the transmitting end may set the first weight of the fading association to 0.8 and the second weight of the interference association to 0.1.

305. And determining the frame error rate by the weight corresponding to the channel measurement frame at the sending end and the total number of the channel measurement frames.

In this embodiment, a sending end may send N channel measurement frames to a receiving end, where N is a positive integer. The sending end can determine the weight of the N channel measurement frames according to the received channel quality parameter statistic and the preset judgment condition.

In some embodiments, the sending end may obtain a frame error condition of the channel measurement frame, where the frame error condition includes a frame error with a count value of 1 and a correct frame with a count value of 0, and an implementation manner of obtaining the frame error condition by the sending end is similar to a conventional manner of calculating a frame error rate, and details are not repeated here. Illustratively, after a sending end sends 1000 channel measurement frames to a receiving end, the sending end determines that a frame error condition is that 5 channel measurement frames are frame errors, and the other 995 channel measurement frames are correct frames.

In some embodiments, the sending end may multiply the count value of the frame error by the weight corresponding to the frame error to obtain the target technical value of the frame error. Illustratively, the weights of the 5 error frames are 0.1, 0.8, 0.1, and 0.1, respectively, and the target count values of the 5 error frames can be obtained as 0.1, 0.8, 0.1, and 0.1 by multiplying the count value by the weight at the transmitting end.

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

In some embodiments, the sending end may automatically adjust according to the determined frame error rate. Illustratively, the automatic adjustment rule set by the sending end is as follows: if the frame error rate is greater than or equal to the preset threshold (5 thousandths), the link rate is reduced, and if the frame error rate is less than the preset threshold (5 thousandths), the link rate is not reduced. Suppose that 5 of 1000 channel measurement frames sent by a sending end are error frames, which are caused by interference, attenuation, interference and interference, respectively. The sending end may determine that the weights of the 5 frames are 0.1, 0.8, 0.1, and 0.1 according to the determination rule in step 304, and finally calculate to obtain the frame error rate of 1.2 per thousand. The sending end will not reduce the link rate according to the above automatic adjustment rule. However, if the frame error rate is calculated in the conventional manner, the frame error rate calculated by the sending end is 5 thousandth, and the link rate is erroneously decreased according to the automatic adjustment rule. Therefore, the embodiment of the application can actually analyze the reason of frame loss, and solve the technical problem that the current mode for calculating the frame error rate can mistakenly reduce the link rate due to the frame loss caused by interference.

In practical application, the transmitting end may also adjust the transmitting 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 (auto), which is not specifically limited in this embodiment of the present application. Fig. 4 is a diagram illustrating an example of communication between a transmitting end and a receiving end in an embodiment of the present application. The third channel 41 is divided into an upper half and a lower half by arrows in fig. 4, the upper half showing the WLAN frame transmitted from the transmitting end to the receiving end, and the lower half showing the WLAN frame transmitted from the receiving end to the transmitting end. The transmitting end first transmits a channel measurement frame 401 to the receiving end through a third channel 41. The channel measurement frame 401 is similar to the sounding frame 201 of fig. 2, and is not described herein again.

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 transmitting end. Illustratively, the channel measurement frame 401 is formed by an existing MAC frame, as shown in fig. 5, with additional information 402. Fig. 5 is an exemplary diagram of a MAC frame in the embodiment of the present application. The MAC frame may include a frame header field 501, a high throughput control (HT control, HTC) field 502, a key field (payload)503, and a Frame Check Sequence (FCS) 504. The frame header portion 501 includes a frame control portion, an address, and the like, which is not specifically limited in this embodiment. The HTC field 502 is primarily used to support high throughput data transfers. The key field 503, which may also be referred to as a frame body field, is a body portion of the MAC frame for transmitting data. The FCS field, also called the trailer, is used to check the MAC frame. The transmitting end may insert additional information 402 into the MAC frame as shown in fig. 5, forming a channel measurement frame 401 as shown in fig. 6. The sender may insert the additional information 402 after the HTC field 502 and before the critical field 503.

In some embodiments, the sender may also use a bit in the HTC field to indicate that the channel measurement frame 401 has additional information 402. For example, the sender may use a reserved bit in the HTC field, which indicates that the channel measurement frame 401 has the additional information 402 when the sender sets the value of the reserved bit to 1, and indicates that the channel measurement frame 401 does not have the additional information 402 when the sender sets the value of the reserved bit to 0. In another example, the HTC field 502 is embodied as a very high throughput control field (VHT HTC), and the transmitting end may multiplex a coding type field in the VHT HTC to indicate whether the channel measurement frame 401 contains the additional information 402. In practical applications, the HTC field 502 may also adopt other variants, and the sending end may all indicate whether the channel measurement frame 401 includes the additional information 402 by multiplexing the field in the HTC or using the reserved bit, which is not described herein again in this embodiment of the present application.

After receiving the channel measurement frame 401 of the transmitting end, the receiving end may obtain feedback information 404 by statistics in response to the additional information 402 in the channel measurement frame 401. In some embodiments, the feedback information 404 may be the channel quality parameter statistics in the corresponding embodiment of fig. 3. And, the receiving end may attach the feedback information 404 to the acknowledgement frame 403. The acknowledgement 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 exemplary diagram of an ACK frame in the embodiment of the present application. The ACK frame includes a frame header field 701, a key field 702, and a frame check sequence 703. The frame header field 701 includes fields such as a frame control field, which is not specifically limited in this embodiment. The key field 702 is used to indicate an confirmed address, associated information, and the like, which is not specifically limited in this embodiment of the application. The frame check sequence 703 is used to check the ACK frame. The receiving end may insert feedback information 404 into the ACK frame as shown in fig. 7, resulting in an acknowledgement frame 403 as shown in fig. 8. In some embodiments, the receiver may insert the feedback information 404 after the key field 702 and before the frame check sequence 703. And the receiving end may insert a magic number (404 a) before the feedback information 404 for indicating that the acknowledgement frame 403 has the feedback information 404. Illustratively, the magic number 404a may be 0x5A5A5A 5A. In practical application, the receiving end may also use other codes to represent the magic number 404a, and the embodiment of the present application does not limit the specific code of the magic number.

In other embodiments, the receiving end may append the feedback information 404 to the BA frame. Fig. 9 is an exemplary diagram of a BA frame in the embodiment of the present application. The BA frame includes a header field 901, a key field 902, and a frame check sequence 903. The frame header field 901 includes fields such as a frame control field, which is not specifically limited in this embodiment of the present application. The key field 902 is used to indicate an address, associated information, and the like of the confirmation, which is not specifically limited in this embodiment of the application. The frame check sequence 903 is used to check the ACK frame. The receiving end may insert feedback information 404 into the BA frame as shown in fig. 9, resulting in an acknowledgement frame 403 as shown in fig. 10. In some embodiments, the receiving end may insert the feedback information 404 after the header field 901 and before the key field 903. Also, the receiving end may insert a magic number (magic number)404a before the feedback information 404 to indicate that the acknowledgement frame 403 has the feedback information 404. The code of the magic number is similar to the magic number in the embodiment shown in fig. 8, and is not described here again.

In other embodiments, the receiving end may attach the feedback information 404 to the MBA frame, which is similar to the foregoing embodiments corresponding to fig. 9 and fig. 10 and is not described herein again.

In some embodiments, the receiving end may also append the feedback information 404 to the acknowledgement frame 403 by multiplexing certain fields in the acknowledgement frame 403. The multiplexing manner is similar to the multiplexing manner of the HTC field in the embodiment corresponding to fig. 6, and details thereof are not repeated in this embodiment.

In this embodiment, after the receiving end generates the acknowledgement frame 403 containing the feedback information 404, the receiving end may return the acknowledgement frame 403 to the transmitting end. In the WLAN technology, after a transmitting end transmits a WLAN frame to a receiving end, the receiving end will quickly return an acknowledgement frame without channel contention. Therefore, in the embodiment of the present application, the feedback information 404 is added to the acknowledgement frame 403, and the feedback information 404 can be returned without channel contention, thereby avoiding contention overhead and increasing the speed of information feedback.

Fig. 11 is an exemplary diagram of an access point in an embodiment of the present application. In this embodiment, an Access Point (AP) may be a sending end or a receiving end. For convenience of description, the embodiments of the present application use an AP as a transmitting end for description. The AP may include a processor 1101 and a Radio Frequency (RF) transceiver circuit 1102. The processor 1101 may be a Microprocessor (MCU), a processor, a main processor, a controller, or an Application Specific Integrated Circuit (ASIC), and may be connected to other modules of the AP through interfaces and lines, execute various types of digital storage instructions, and execute various functions of the AP and process data, so as to implement various functions of the AP. The RF transceiver circuit 1102 is coupled to the processor 1101, and the RF transceiver circuit 1102 may include a transceiver, a power amplifier, a frequency filter, and other devices, and is configured to perform processing such as filtering, power amplifying, and the like on the channel measurement frame, which is not specifically limited in this embodiment of the present invention. In practical applications, the AP may add other modules or reduce modules according to actual needs, for example, a Media Access Control (MAC) layer or a physical layer (PHY), which is not specifically limited in this embodiment of the present application.

In some embodiments, the AP may communicate with a Station (STA), and the STA may be a client in the WLAN, may be a computer equipped with a wireless network card, may also be a smart phone with a WiFi module, may be mobile, and may also be fixed. Specifically, the STA includes, but is not limited to, a mobile phone, a tablet computer, a desktop computer, and the like, which is not limited in this embodiment of the present application. Fig. 12 is an exemplary diagram of a station STA. In an embodiment of the application, the STA may include a processor 1201, and RF transceiver circuitry 1202 coupled to the processor 1201. The processor 1201 may be a microprocessor, a processor, a main processor, a controller, or an application specific integrated circuit, among other components. RF transceiver circuitry 1202 may include transceivers, power amplifiers, frequency filters, and the like. This is not particularly limited in the embodiments of the present application.

In some embodiments, the processor 1101 may generate additional information when the AP needs to determine the frame error rate. Then, the processor 1101 may insert the additional information into the WLAN frame, and multiplex some reserved bits in the WLAN frame to indicate that the WLAN frame has the additional information, and the specific process may refer to the foregoing embodiments corresponding to fig. 4 to fig. 10, which is not described herein again. The WLAN frame into which the additional information is inserted may also be referred to as a channel measurement frame. Processor 1101 may transmit the generated channel measurement frame to RF transceiver circuitry 1102. Then, the RF transceiver circuit 1102 may transmit the channel measurement frame to the STA through the antenna, which is similar to step 301 in the foregoing embodiment and will not be described herein again.

In some embodiments, after the STA receives the channel measurement frame through the RF transceiver circuit 1202, the processor 1201 may determine, in response to the channel measurement frame, a channel quality parameter statistic according to a reception condition of the channel measurement frame, where a specific process is similar to step 302 in the foregoing embodiment and is not repeated here. Then, the processor 1201 may add the channel quality parameter statistic as feedback information to the acknowledgement frame corresponding to the channel measurement frame, and send the feedback information to the AP through the RF transceiver circuit 1202, which is similar to the step 303 in the foregoing embodiment and is not described herein again.

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 circuitry 1102. RF transceiver circuitry 1102 may perform filtering, power amplification, etc. on the acknowledgement frame. RF transceiver circuitry 1102 then transmits the processed acknowledgement frame to processor 1101. The processor 1101 may extract the feedback information in the acknowledgement frame, and then determine the weight corresponding to the channel measurement frame according to the feedback information, thereby determining the frame error rate, which is similar to the foregoing step 304 and step 305 in the embodiment corresponding to fig. 3, and details are not repeated here.

In some embodiments, after the processor 1101 determines the frame error rate, parameters in the processor 1101 or the RF transceiver circuit 1102 may be adjusted according to the frame error rate. For example, the rule of the AP auto-adjustment algorithm may be that the frame error rate is increased by more than five per thousand, and the processor 1101 may increase the amplification factor of the power amplifier in the RF transceiver circuit when the frame error rate determined by the processor 1101 is greater than five per thousand. 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 this embodiment of the present application.

In some embodiments, the AP may also include a memory. The memory is connected to the processor 1101 for storing additional information or feedback information. Illustratively, the memory may be Direct Memory Access (DMA).

Fig. 13 is a diagram of an example system for data processing according to an embodiment of the present application. The data processing system comprises an access point 1301 and a station, wherein the access point 1301 can be a router, a modem (modem) with a wireless connection function, a portable wifi and other access devices, and can be arranged in a room, a living room, a public place and other places. The types of the sites may include, but are not limited to, a mobile phone terminal 1302, a notebook computer 1303, and a tablet computer 1304, and in practical applications, the sites may also be other devices capable of implementing wireless internet access, which is not described in this embodiment of the present application. In some embodiments, one access point 1301 may be connected to multiple mobile phone terminals 1302 simultaneously, or may be connected to multiple notebook computers 1303 or tablet computers 1304. It is understood that the stations may connect to the internet through access point 1301.

In this embodiment of the application, the access point 1301 may perform steps, such as step 301, step 304, and step 305, of the transmitting end in each embodiment corresponding to fig. 3. The station may perform the steps of the receiving end, such as step 302 and step 303, in the embodiments corresponding to fig. 3. The embodiment of the present application is not described in detail herein.

In some embodiments, the station may perform the steps of the transmitting side in the embodiments corresponding to fig. 3, and the access point 1301 may perform the steps of the receiving side in the embodiments corresponding to fig. 3. For example, when the mobile phone terminal 1302 uploads a video file, the mobile phone terminal 1302 may perform the steps of the transmitting end in each embodiment corresponding to fig. 3, and meanwhile, the access point 1302 may perform the steps of the receiving end in each embodiment corresponding to fig. 3. In this case, the mobile phone terminal 1302 may 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 uploading rate.

In some embodiments, the mobile phone terminal 1302 may open a "mobile phone hotspot" to connect with other mobile phone terminals 1302, so that the other mobile phone terminals 1302 may communicate through the mobile phone terminal 1302 that opens the "mobile phone hotspot". At this time, the handset terminal 1302 that opens the "handset hotspot" may perform steps similar to the access point 1301 described above. Similarly, the notebook computer 1303 or the tablet computer 1304 may also open similar hotspots, and perform steps similar to those described above for the access point 1301.

It should be noted that the above-described embodiments of the apparatus are merely schematic, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiments of the apparatus provided in the present application, the connection relationship between the modules indicates that there is a communication connection therebetween, and may be implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.

Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented by software plus necessary general-purpose hardware, and certainly can also be implemented by special-purpose hardware including special-purpose integrated circuits, special-purpose CPUs, special-purpose memories, special-purpose components and the like. Generally, functions performed by computer programs can be easily implemented by corresponding hardware, and specific hardware structures for implementing the same functions may be various, such as analog circuits, digital circuits, or dedicated circuits. However, for the present application, the implementation of a software program is more preferable. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a readable storage medium, such as a floppy disk, a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk of a computer, and includes instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods described in the embodiments of the present application.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product.

The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can store or a data storage device, such as a server, a data center, etc., that is integrated with one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Claims

A method for determining a frame error rate, applied to a wireless local area network, includes:

a sending end sends N channel measurement frames to a receiving end, wherein the channel measurement frames are used for indicating the receiving end to send channel quality parameter statistics values corresponding to the channel measurement frames to the sending end, and N is a positive integer;

the sending end receives the channel quality parameter statistic value;

the sending end determines the weight corresponding to the channel measurement frame according to the channel quality parameter statistic value;

and 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 of claim 1, wherein the channel quality parameter statistics comprise maximum, minimum and average values of the channel quality parameter;

the step of the sending end determining the weight corresponding to the channel measurement frame according to the channel quality parameter statistic value comprises the following steps:

the sending end obtains a first difference value, and the first difference value is obtained by subtracting the minimum value from the average value;

the sending end obtains a second difference value, and the second difference value is obtained by subtracting the average value from the maximum value;

the sending end obtains a comprehensive difference value, wherein the comprehensive difference value is an absolute value of the difference between the first difference value and the second difference value;

and if the comprehensive difference value is smaller than a first preset threshold value, the sending end determines a first weight corresponding to the channel measurement frame.
The method according to claim 1 or 2, wherein before the transmitting end transmits N channel measurement frames to the receiving end, the method further comprises:

the sending end obtains the first weight, and the first weight is used for indicating that the reason of frame loss is attenuation;

the sending end acquires a first condition corresponding to attenuation of the frame loss reason, wherein the first condition comprises that the comprehensive difference value is smaller than the first preset threshold value;

the transmitting end establishes the incidence relation of the first condition, the first weight and the frame loss reason due to attenuation.
The method according to any one of claims 1 to 3, wherein after the sending end obtains the composite difference value, the method further comprises:

if the comprehensive difference value is not less than the first preset threshold value, the comprehensive difference value is greater than or equal to a second preset threshold value, the channel quality parameter statistic value is carried in a Block Acknowledgement (BA) frame or a multi-user block acknowledgement (MBA) frame, and the first difference value is greater than or equal to the second difference value, the sending end determines a second weight corresponding to the channel measurement frame, wherein the BA frame or the MBA frame is a frame sent to the sending end by the receiving end;

and if the comprehensive difference value is not less than the first preset threshold value, the comprehensive difference value is greater than or equal to a second preset threshold value, the channel quality parameter statistic value is carried in a BA frame or an MBA frame, and the first difference value is less than the second difference value, the transmitting 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 transmitting end transmits N channel measurement frames to a receiving end, the method further comprises:

the sending end acquires the second weight, and the second weight is used for indicating that the reason of frame loss is interference;

the sending end acquires a second condition corresponding to the frame loss reason being interference, wherein the second condition comprises that the comprehensive difference is not less than the first preset threshold, the comprehensive difference is greater than or equal to the second preset threshold, the channel quality parameter statistic 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 incidence relation of the second condition, the second weight and the frame loss reason as interference.
The method according to any one of claims 1 to 5, wherein before the transmitting end transmits N channel measurement frames to the receiving end, the method further comprises:

the sending end obtains the first weight, and the first weight is used for indicating that the reason of frame loss is attenuation;

the sending end acquires a first condition corresponding to the frame loss reason being attenuation, wherein the first condition comprises that the comprehensive difference is not less than a first preset threshold, the comprehensive difference is greater than or equal to a second preset threshold, the channel quality parameter statistic is carried in a BA frame or an MBA frame, and the first difference is less than the second difference;

the transmitting end establishes the incidence relation of the first condition, the first weight and the frame loss reason due to attenuation.
The method according to any one of claims 1 to 6, wherein after the sending end obtains the composite difference value, the method further comprises:

if the comprehensive difference value is not less than the first preset threshold value, the comprehensive difference value is greater than or equal to a second preset threshold value, the channel quality parameter statistic value is carried in an acknowledgement frame (ACK) frame, and the first difference value is greater than or equal to the second difference value, the sending end determines a second weight corresponding to the channel measurement frame, wherein the ACK frame is a frame sent to the sending end after the receiving end is retransmitted by hardware;

and if the comprehensive difference value is not less than the first preset threshold value, the comprehensive difference value is greater than or equal to a second preset threshold value, the channel quality parameter statistic value is carried in an ACK frame, and the first difference value is less than the second difference value, 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 transmitting end transmits N channel measurement frames to a receiving end, the method further comprises:

the sending end acquires the second weight, and the second weight is used for indicating that the reason of frame loss is interference;

the sending end acquires a second condition corresponding to the frame loss reason being interference, wherein the second condition comprises that the comprehensive difference is not less than the first preset threshold, the comprehensive difference is greater than or equal to a second preset threshold, the channel quality parameter statistic is carried in an ACK frame, and the first difference is greater than or equal to the second difference;

the sending end establishes the incidence relation of the second condition, the second weight and the frame loss reason as interference.
The method according to any one of claims 1 to 8, wherein before the transmitting end transmits N channel measurement frames to the receiving end, the method further comprises:

the sending end obtains the first weight, and the first weight is used for indicating that the reason of frame loss is attenuation;

the sending end acquires a first condition corresponding to the frame loss reason being attenuation, wherein the first condition comprises that the comprehensive difference is not less than a first preset threshold, the comprehensive difference is greater than or equal to a second preset threshold, the channel quality parameter statistic is carried in an ACK frame, and the first difference is less than the second difference;

the transmitting end establishes the incidence relation of the first condition, the first weight and the frame loss reason due to attenuation.
The method according to any of claims 1 to 9, characterized in that said channel quality parameter statistics are carried in ACK frames, BA frames or MBA frames.
The method according to any of the claims 1-10, wherein the receiving end carries the channel quality parameter statistics in the ACK frame, the BA frame or the MBA frame by multiplexing fields in the ACK frame, the BA frame or the MBA frame.
The method according to any of claims 1-10, wherein the receiving end carries the channel quality parameter statistics in the ACK frame, the BA frame or the MBA frame by inserting an additional field in the ACK frame, the BA frame or the MBA frame.
The method according to any one of claims 1 to 12, wherein the determining, by the sending end, 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, wherein the frame error condition comprises a frame error with a count value of 1 and a correct frame with a count value of 0;

the sending end determines a target counting value of the error frame according to the counting value of the error frame and the weight;

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

and if the frame error rate is greater than a third threshold, the sending end adjusts the sending parameters of the sending end according to a preset adjusting algorithm.
An access point, comprising: a processor, and radio frequency transceiver circuitry 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 frames are used to instruct the station to send channel quality parameter statistics corresponding to the channel measurement frames to the access point, where N is a positive integer;

the processor is further configured to:

receiving the channel quality parameter statistic 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 statistic value; and

and determining the frame error rate between the access point and the site according to the weight and the N.
The access point of claim 15, wherein the channel quality parameter statistics comprise maximum, minimum and average values of the channel quality parameter;

the processor is further configured to:

obtaining a first difference value, wherein the first difference value is obtained by subtracting the minimum value from the average value;

obtaining a second difference value, wherein the second difference value is obtained by subtracting the average value from the maximum value; and

acquiring a comprehensive difference value, wherein the comprehensive difference value is an absolute value of the difference between the first difference value and the second difference value;

and if the comprehensive difference value is smaller than a first preset threshold value, the processor determines a first weight corresponding to the channel measurement frame.
The access point of claim 15 or 16,

if the comprehensive difference value is not smaller than the first preset threshold value, the comprehensive difference value is larger than or equal to a second preset threshold value, the channel quality parameter statistic value is carried in a Block Acknowledgement (BA) frame or a multi-user block acknowledgement (MBA) frame, and the first difference value is larger than or equal to the second difference value, the processor determines a second weight corresponding to the channel measurement frame, wherein the BA frame or the MBA frame is a frame sent by the station to the access point;

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

if the comprehensive difference value is not smaller than the first preset threshold value, the comprehensive difference value is larger than or equal to a second preset threshold value, the channel quality parameter statistic value is carried in an acknowledgement frame (ACK) frame, and the first difference value is larger than or equal to the second difference value, the processor determines a second weight corresponding to the channel measurement frame, wherein the ACK frame is a frame sent to the access point after the station is retransmitted by hardware;

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

acquiring frame error conditions of the channel measurement frame, wherein the frame error conditions comprise a frame error with a count value of 1 and a correct frame with a count value of 0;

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

and determining the frame error rate according to the target counting value of the frame error and the N.
The access point of any of claims 15 to 19,

and if the frame error rate is greater than a third threshold value, the processor adjusts the transmission parameters of the access point according to a preset adjustment algorithm.
A data processing system comprising an access point and a station;

the access point is used for sending N channel measurement frames to a station, wherein N is a positive integer;

the station is used for sending the channel quality parameter statistic corresponding to the channel measurement frame to the access point;

the access point is further configured to receive the channel quality parameter statistics;

the access point is further used for determining the weight corresponding to the channel measurement frame according to the channel quality parameter statistic 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 said channel quality parameter statistics comprise maximum, minimum and average values of channel quality parameters;

the access point is further configured to:

obtaining a first difference value, wherein the first difference value is obtained by subtracting the minimum value from the average value;

obtaining a second difference value, wherein the second difference value is obtained by subtracting the average value from the maximum value; and

acquiring a comprehensive difference value, wherein the comprehensive difference value is an absolute value of the difference between the first difference value and the second difference value;

and if the comprehensive difference value is smaller than a first preset threshold value, the access point determines a first weight corresponding to the channel measurement frame.
The system of claim 21 or 22,

if the comprehensive difference value is not smaller than the first preset threshold value, the comprehensive difference value is larger than or equal to a second preset threshold value, the channel quality parameter statistic value is carried in a Block Acknowledgement (BA) frame or a multi-user block acknowledgement (MBA) frame, and the first difference value is larger than or equal to the second difference value, the access point determines a second weight corresponding to the channel measurement frame, wherein the BA frame or the MBA frame is a frame sent to the access point by the station;

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

if the comprehensive difference value is not smaller than the first preset threshold value, the comprehensive difference value is larger than or equal to a second preset threshold value, the channel quality parameter statistic value is carried in an acknowledgement frame (ACK) frame, and the first difference value is larger than or equal to the second difference value, the access point determines a second weight corresponding to the channel measurement frame, wherein the ACK frame is a frame sent to the access point after the station is retransmitted by hardware;

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

acquiring frame error conditions of the channel measurement frame, wherein the frame error conditions comprise a frame error with a count value of 1 and a correct frame with a count value of 0;

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

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