CN114697245A - Network testing method and device, computer readable storage medium and terminal equipment - Google Patents
Network testing method and device, computer readable storage medium and terminal equipment Download PDFInfo
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Abstract
The invention discloses a network testing method, a device, a computer readable storage medium and terminal equipment, wherein the method comprises the steps of scanning a network environment to obtain a plurality of terminal identifications in the network environment and network parameters corresponding to the terminal identifications; determining a channel interference value corresponding to each transmission channel in the network environment according to the network parameters; and aiming at each transmission channel, determining the network state corresponding to the transmission channel according to the channel interference value corresponding to the transmission channel. The network testing method provided by the invention can provide a more stable and reliable network state.
Description
Technical Field
The present invention relates to network testing technologies, and in particular, to a network testing method and apparatus, a computer-readable storage medium, and a terminal device.
Background
In a local area network, WiFi is a wireless networking technology, and can provide a wireless network access function for terminals within a certain range. With the development of network technology, WiFi is seen everywhere in daily life, for example, a home router can access an intelligent terminal in a home after being connected to the network. At present, the working frequency band of Wireless Local Area Network (WLAN) transmission includes two frequency bands of 2.4G and 5G, and each of the two frequency bands has a plurality of channels. In a highly-deployed network, one channel is usually used by multiple Wireless Access Points (APs), and when multiple APs transmit data simultaneously, the network is congested, so that data transmission in the local area network is slow.
The current network state test is mostly realized by testing the transmission rate of data packets, and although the method has the specificity of real-time property, the test data packets need to be frequently sent, but the requirements for the network are different when different data are transmitted. When data transmission needs to be stably carried out for a long time, for example, when a screen is projected, if the screen projection effect is adjusted according to the network state in real time, the problem of unstable transmission exists. In addition, if parameter changes, such as screen projection, need to be performed according to the network status, frequent changes of related parameters will result in large energy consumption.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a network testing method aiming at the defects of the prior art.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a method of network testing, the method comprising:
scanning a network environment to obtain a plurality of terminal identifications in the network environment and network parameters corresponding to the terminal identifications;
determining channel interference values corresponding to all transmission channels in the network environment according to the network parameters;
and aiming at each transmission channel, determining the network state corresponding to the transmission channel according to the channel interference value corresponding to the transmission channel.
The network testing method comprises the steps that the network parameters comprise signal intensity corresponding to each terminal identification, a transmission channel corresponding to each terminal identification and a transmission frequency band of each transmission channel.
In the network testing method, for each transmission channel, a channel interference value corresponding to the transmission channel is the sum of terminal interference values corresponding to the transmission channel, where the terminal interference value is an interference value corresponding to different terminal identifiers of the transmission channel.
The network testing method, wherein the determining channel interference values corresponding to transmission channels in the network environment according to the network parameters specifically includes:
aiming at each terminal identification, determining an initial interference value corresponding to the terminal identification according to the signal strength corresponding to the terminal identification;
and determining a terminal interference value corresponding to each transmission channel according to the initial interference value and a preset interference evaluation rule.
The network testing method, wherein the determining a terminal interference value corresponding to each transmission channel according to the initial interference value and a preset interference evaluation rule specifically includes:
determining a central channel corresponding to the terminal identification in the transmission channel according to the transmission frequency band;
and aiming at each transmission channel, calculating a terminal interference value corresponding to the transmission channel according to the initial interference value and a channel distance corresponding to the transmission channel, wherein the channel distance is the distance between the transmission channel and the central channel.
The network testing method, wherein the calculating a terminal interference value corresponding to the transmission channel according to the initial interference value and the channel distance corresponding to the transmission channel specifically includes:
determining an interference value calculation formula corresponding to the transmission channel according to the transmission frequency band corresponding to the terminal identification and the channel distance corresponding to the transmission channel;
and calculating a terminal interference value corresponding to the transmission channel according to the interference value calculation formula and the initial interference value.
In the network testing method, for each transmission channel, the channel distance corresponding to the transmission channel includes the number of transmission channels spaced between the transmission channel and the central channel.
In the network testing method, for each transmission channel, the value of the terminal interference value corresponding to the transmission channel is inversely related to the value of the channel distance corresponding to the transmission channel.
The network testing method, wherein the network parameters include the bandwidth of each transmission channel;
for each transmission channel, the value of the terminal interference value corresponding to the transmission channel is positively correlated with the value of the bandwidth of the transmission channel.
The network testing method, wherein the determining, for each transmission channel, a network state corresponding to the transmission channel according to a channel interference value corresponding to the transmission channel specifically includes:
for each transmission channel, when the channel interference value corresponding to the transmission channel is greater than or equal to a preset interference value threshold value, determining that the network state of the transmission channel is network congestion; alternatively, the first and second electrodes may be,
and when the channel interference value corresponding to the transmission channel is smaller than the interference value threshold value, determining that the network state of the transmission channel is good.
The network testing method, wherein, after determining the network state corresponding to the transmission channel according to the channel interference value corresponding to the transmission channel for each transmission channel, further includes:
determining a target identifier in the terminal identifiers according to a preset terminal identification code, and taking a transmission channel corresponding to the target identifier as a screen projection channel;
and acquiring the application to be screen-projected, and determining screen-projecting parameters corresponding to the application to be screen-projected according to the network state of the screen-projecting channel.
The network test method comprises the steps that screen projection parameters comprise resolution negotiation parameters and display parameters; determining screen projection parameters corresponding to the application to be screen projected according to the network state of the screen projection channel, specifically comprising:
determining resolution negotiation parameters corresponding to the application to be screen-projected according to the network state of the screen-projecting channel;
and determining display parameters corresponding to the application to be projected according to the application type of the application to be projected.
A network test device specifically comprises: the application type comprises a real-time application type and a delay application type; the determining, according to the application type of the application to be screen-projected, a display parameter corresponding to the application to be screen-projected specifically includes:
when the application type of the application to be screen-projected is a real-time application type, determining the screen-projecting parameter as a preset real-time screen-projecting parameter;
and when the application type of the application to be screen-projected is a delay application type, determining the screen-projecting parameter as a preset delay screen-projecting parameter.
A network test apparatus, wherein the apparatus comprises:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for scanning a network environment to obtain a plurality of terminal identifications in the network environment and network parameters corresponding to the terminal identifications;
the interference value module is used for determining channel interference values corresponding to all transmission channels in the network environment according to the network parameters;
and the determining module is used for determining channel interference values corresponding to all transmission channels in the network environment according to the network parameters.
A computer readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement steps in a network testing method as recited in any of the above.
A terminal device, comprising: a processor, a memory, and a communication bus; the memory has stored thereon a computer readable program executable by the processor;
the communication bus realizes connection communication between the processor and the memory;
the processor, when executing the computer readable program, implements the steps in the network testing method as described in any of the above.
Has the advantages that: compared with the prior art, the invention provides a network testing method, a computer readable storage medium and terminal equipment, wherein the method obtains network parameters of each network terminal in a network environment, then determines the degree of interference of the network terminal received by a transmission channel in the network environment according to the network parameters of each network terminal, namely a channel interference value, and then determines the network state of each transmission channel according to the channel interference value. According to the scheme, the network state is evaluated without sending a data packet in real time, and the interference of the whole transmission channel is used for evaluation, so that the evaluation result is more reliable, and the large data transmission is more stable.
Drawings
Fig. 1 is a schematic view of an application scenario of the network testing method provided by the present invention.
Fig. 2 is a flowchart of a network testing method provided by the present invention.
Fig. 3 is a schematic flow chart of acquiring network parameters and performing a test in the network testing method provided by the present invention.
Fig. 4 is a schematic diagram of screen projection performed on a screen projection terminal in the network testing method provided by the present invention.
Fig. 5 is a schematic structural diagram of a terminal device provided in the present invention.
Detailed Description
The present invention provides a network testing method, a computer readable storage medium and a terminal device, and in order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The inventor has found through research that the current network state test is mostly realized by testing the transmission rate of the data packets, and although the method has the specificity of real-time performance, the test data packets need to be frequently sent, but the requirements for the network are different when different data are transmitted. When data transmission needs to be stably carried out for a long time, for example, when a screen is projected, if screen projection effect is adjusted according to a network state in real time, on one hand, the display effect is unstable, and on the other hand, the screen projection parameters are frequently changed, so that large energy consumption can be generated on the intelligent terminal.
In order to solve the above problem, in the embodiment of the present invention, network parameters of each network terminal in a network environment are obtained; determining a channel interference value corresponding to each transmission channel in the network environment according to the network parameters; and aiming at each transmission channel, determining the network state corresponding to the transmission channel according to the channel interference value corresponding to the transmission channel.
For example, embodiments of the present invention may be applied to a scenario as shown in FIG. 1. The wireless local area network comprises a plurality of network terminals, wherein the network terminals at least comprise an AP (access point) and a plurality of stations (Station, STA), the AP can be a common router, the STA comprises a display terminal for displaying videos, the wireless local area network further comprises a screen projection terminal for sending screen projection data to the display terminal, and the screen projection terminal can be a smart phone, a computer and the like. It should be noted that the above application scenarios are only presented to facilitate understanding of the present invention, and the embodiments of the present invention are not limited in any way in this respect. Rather, embodiments of the present invention may be applied to any scenario where applicable.
The invention will be further explained by the description of the embodiments with reference to the drawings.
As shown in fig. 2, the present embodiment provides a network testing method, which is described by taking any STA in a network environment as a main body. It should be noted that the method is not only executable by the STA, but also executable by the AP, i.e. executable by any network terminal in the network environment. The method may comprise the steps of:
s10, scanning the network environment to obtain a plurality of terminal identifications in the network environment and network parameters corresponding to the terminal identifications.
Specifically, in the scenario of this embodiment, the network environment includes a plurality of network terminals, and for simplicity of description, this embodiment describes a wireless network including three network terminals, namely, only one AP and one display terminal and one screen projection terminal.
First, as shown in fig. 3, when the STA or the AP performs a network environment, in order to announce its presence, the STA or the AP establishes contact with another network terminal, and transmits a management frame in the network environment based on a WiFi protocol.
Meanwhile, the STA executing the method is controlled to enter a monitoring mode, periodically executes WiFi scanning, and scans each transmission channel in the current network environment, thereby acquiring management frames of each transmission channel, such as data of a Beacon (Beacon) frame of an AP, a Probe Request (Probe Request) frame of the STA, a Probe Response (Probe Response) frame, and the like. Each management frame includes the terminal id for sending the management frame, so as to announce the body for sending the probe request frame. The terminal Identifier is an Identifier that can identify a main body from which the management frame is sent according to the management frame, for example, a beacon frame may include a Service Set Identifier (SSID) of the AP, and the probe request frame includes a Media Access Control Address (MAC) Address. Therefore, after the management frame is obtained, the terminal identification can be extracted from the management frame, so that a plurality of terminal identifications in the network environment are obtained, and each terminal identification corresponds to a network terminal in the network environment.
Because each STA needs to perform data transmission with the AP or other STAs based on the management frames such as the beacon frame, the probe request frame, and the probe response frame when accessing the wireless network, the relevant network information of all APs and STAs in the current network environment range, such as the signal strength (Rssi) corresponding to each terminal identifier, the transmission channel corresponding to each terminal identifier for transmitting data, and the transmission frequency band of each transmission channel, can be obtained according to the data obtained by scanning.
In this embodiment, the transmission channel refers to the sum of transmission channels through which each network terminal performs data transmission, and data transmission performed by one network terminal is not limited to only one transmission channel, but is performed in a frequency band range corresponding to a plurality of transmission channels, where the sum of the plurality of transmission channels is the transmission channel corresponding to the network terminal.
The transmission channels are channels (channels) obtained by dividing frequency bands by using a telecommunication protocol, for example, the frequency band at 802.11b/g/n is 2.4GHz, and the total number of the transmission channels is 13, and the labels are 1 to 13, and are also often abbreviated as CH1 to CH 13. For example, in a 2.4GHz environment, a transmission channel connected to a network terminal is CH6, a transmission frequency band is 40MHz, and a width of each transmission channel is fixed to 22MHz, a frequency band of a network channel corresponding to the network terminal is up to 2.437GHz (a center frequency of CH 6) and down to 40MHz, that is, the transmission channel of the network terminal includes CH6 and a plurality of transmission channels adjacent to the CH 6. Therefore, the channel frequency band includes the signal frequency range of the transmission channel, and the bandwidth of the network terminal corresponding to the terminal identifier can be known by determining the channel frequency band range, wherein the bandwidth of the transmission channel of the AP can be calculated according to the maximum rate of the AP for transmitting data.
And S20, determining channel interference values corresponding to each transmission channel in the network environment according to the network parameters.
Specifically, the channel interference value corresponding to the transmission channel is a quantized value of the interference of the transmission channel, and represents the degree of interference of the transmission channel. The interference source of the transmission channel includes interference of an STA performing data transmission based on the transmission channel, interference of an adjacent channel of the transmission channel, interference between APs, and the like, which are substantially caused by different network terminals in a network environment, and therefore, may also be described as a pollution (dirtynness) degree of the transmission channel. Based on the network parameters, the interference brought by each AP and STA to each transmission channel can be determined, and for each transmission channel, the interference brought by all APs and STAs is superimposed, so that the interference condition corresponding to the transmission channel, that is, the channel interference value, can be obtained, and the interference brought by each network terminal to the transmission channel is referred to as the terminal interference value. For example, when the number of APs using the same transmission channel is larger, the transmission channel is more likely to be interfered. When the signal strength of an AP is higher, the more channel resources it occupies, and therefore the higher the interference value corresponding to the transmission channel used by the AP to transmit data is.
Further, if a plurality of APs and STAs exist in the network environment, each AP and STA may cause interference to the transmission channel, and therefore, in this embodiment, the channel interference value corresponding to one transmission channel is the sum of terminal interference values obtained by all the APs and STAs interfering with the transmission channel. The terminal interference value refers to an interference value of the transmission channel corresponding to different terminal identifiers. For example, if the terminal interference value of the AP1 on the transmission channel CH1 is 10, the terminal interference value of the AP2 on the transmission channel CH1 is 0, and the terminal interference value of the STA on the transmission channel CH1 is 10, the channel interference value corresponding to the transmission channel is 10+0+10 — 20.
Further, the WiFi-based transmission channels are not completely isolated from each other for data transmission. For example, in the 2.5 band, CH1 corresponds to a band of 2.4GHz, a bandwidth is 2412MHz, a center frequency is 2.412GHz, and a center band of CH2 is 2.417GHz, and the center band is within the range of CH1, so that there is a large overlap between CH1 and CH2, and in 2.5GHz, only CH1, CH6, and CH11 are transmission channels without overlapping bands. Therefore, when a certain AP performs data transmission through CH1, it will cause some interference to the adjacent transmission channel. Therefore, in this embodiment, when calculating the transmission interference value corresponding to each transmission channel, it is necessary to calculate the interference value caused by each network terminal in the environment, rather than only calculating the interference caused by the transmission channel transmitted by the network terminal. Therefore, the process of determining the channel interference value corresponding to each transmission channel is as follows:
and A10, determining an initial interference value corresponding to each terminal identification according to the signal strength corresponding to the terminal identification.
Specifically, when the signal strength of a network terminal is stronger, the interference of the network terminal to the transmission channel is larger, that is, the signal strength corresponding to each terminal identifier directly has positive correlation with the interference of the transmission channel, so for each network terminal, according to the signal strength corresponding to the network terminal, an initial interference value corresponding to the network terminal is determined, where the initial interference value refers to the strength of the direct interference of the network terminal to the transmission channel used by the network terminal to transmit data. For example, for the network terminal AP1, when the signal strength corresponding to the AP1 is higher, the initial interference value is higher. In a first implementation manner of this embodiment, an operation function is preset, a signal of a network terminal is used as an independent variable, and a corresponding dependent variable, that is, an initial interference value, is calculated based on the operation function. In a second implementation manner of this embodiment, a mapping table is preset, as shown in table 1 below, where dbm is a unit of power in decibel and milliwatt, and dintiness is an initial interference value.
Table 1 mapping table of signal strength and initial interference value
| Rssi | <-75dbm | -75dbm＝<Rssi<-45dbm | >＝-45dbm |
| Dirtiness(Dinit) | 30 | 50 | 80 |
And A20, determining a terminal interference value corresponding to each transmission channel according to the initial interference value and a preset interference evaluation rule.
Specifically, because there is an overlap of frequency bands between transmission channels, each network terminal may interfere with not only one transmission channel in the environment, for example, it may also interfere with CH2 by using CH1 for data transmission. Therefore, in this embodiment, an interference evaluation rule is preset, and the interference evaluation rule is used to evaluate a terminal interference value of a network terminal to other transmission channels according to interference of the network terminal to a main transmission channel for data transmission. Therefore, after the initial interference value corresponding to the network terminal is obtained, the terminal interference value brought by the network terminal to all the transmission channels can be determined according to the information such as the bandwidth of the transmission channel, the corresponding frequency band and the like. For example, the interference strength gradually attenuates as the distance between transmission channels is longer. For example, there is no frequency overlap between CH1 and CH6, and therefore, when AP1 uses CH1 for data transmission, it generally does not interfere with CH 6; due to the overlap between CH2 and CH1, AP1 may interfere with CH 2. Similar to voiceprint propagation, the interference caused by the network device is smaller as the frequency difference of the transmission channels is larger. Also for example, when the bandwidth of a transmission channel is larger, the more transmission channels are interfered.
Further, step a20 includes:
b10, according to the transmission frequency band, determining a central channel corresponding to the terminal identification in the transmission channel.
Specifically, a central channel corresponding to the network terminal in all the transmission channels is calculated according to the transmission frequency band of the transmission channel corresponding to the network terminal. Although the network terminal can perform data transmission in all frequencies of its corresponding transmission channel, it has a certain preference in transmission and usually employs a certain frequency band for transmission. And the center channel refers to a transmission channel where the network terminal mainly performs transmission based on such preference on transmission. For example, the transmission Band of a certain transmission channel uses the transmission channel CH6 as the center Band, the Bandwidth (BW) is 40, and if the transmission channel is biased upwards, the center channel may be CH 8; if the transmission is down-biased, the center channel may be CH 4.
B20, for each transmission channel, calculating a terminal interference value corresponding to the transmission channel according to the initial interference value and a channel distance corresponding to the transmission channel, where the channel distance is a distance between the transmission channel and the center channel.
Specifically, since the transmission channel through which the network terminal mainly performs transmission is the central channel, the interference of the network terminal on the transmission channel decreases as the distance from the central channel to the large channel increases. Therefore, according to the initial interference value corresponding to the network terminal and the channel distances between all the transmission channels and the center channel, the terminal interference value of the network terminal to all the transmission channels can be calculated. That is, each transmission channel corresponds to the terminal interference value of the network terminal, and the terminal interference value can be calculated according to the initial interference value and the channel distance between the transmission channel and the center channel. The channel distance is a parameter describing a distance between transmission channels, and may be calculated by using one or more of parameters such as a frequency band difference between different transmission channels, a difference between channel numbers corresponding to different transmission channels, an overlapping ratio between the transmission channel and a central channel, and the number of transmission channels spaced between the transmission channel and the central channel.
Further, the process of calculating the terminal interference value is as follows:
determining an interference value calculation formula corresponding to the transmission channel according to the transmission frequency band corresponding to the terminal identification and the channel distance corresponding to the transmission channel;
and calculating a terminal interference value corresponding to the transmission channel according to the interference value calculation formula and the initial interference value.
Specifically, different interference value calculation formulas are set in advance for different transmission frequency bands and different channel distances. For example, in the case of the same channel distance, the larger the bandwidth corresponding to the transmission frequency band is, the larger the interference degree received by the transmission channel is. In addition, there are differences in the interference received at different operating frequencies. In this embodiment, the following tables 2 and 3 provide a rough interference value calculation formula based on the operating frequencies 2.4GHz and 5GHz, where D represents a channel distance, the number of transmission channels spaced between the transmission channel and the central channel is used as the channel distance, and Dint is an initial interference value.
TABLE 22.4 GHz interference value calculation formula
Table 35 GHz interference value calculation formula
It should be noted that the above formula only illustrates the general rule of the interference value calculation process. For the same network terminal, the higher the working frequency band of the carrier wave is, the more transmission channels are interfered by the network terminal, that is, the terminal interference value of the transmission channel is positively correlated with the working frequency band. When the working frequency ranges are the same, in a certain range, the closer the transmission channel is to the central channel, the larger the terminal interference value of the transmission channel is, that is, for each transmission channel, the value of the terminal interference value corresponding to the transmission channel is negatively correlated with the value of the channel distance corresponding to the transmission channel. Under the condition of the same channel distance, if the bandwidth of the transmission channel is larger, the terminal interference value of the transmission channel is larger in a certain range, that is, for each transmission channel, the value of the terminal interference value corresponding to the transmission channel is positively correlated with the value of the bandwidth of the transmission channel.
And S30, determining the network state corresponding to each transmission channel according to the channel interference value corresponding to the transmission channel.
Specifically, after the channel interference value corresponding to each transmission channel is obtained, the pressure applied to each STA or AP for data transmission is determined. For example, if a certain AP performs channel transmission based on CH1 and the channel interference value corresponding to CH1 is large, it indicates that the AP is under high pressure during data transmission, and the network status is network congestion, i.e., the network is poor. The method for judging the network state can adopt a method of presetting an interference value threshold for judging a channel interference value, for example, presetting an interference value threshold, and if the channel interference value is greater than or equal to the interference value threshold, indicating that the network is crowded; and if the channel interference value is smaller than the interference value threshold value, the network state is a good network state. Besides setting an interference value threshold, a plurality of interference value thresholds can be set according to actual requirements, for example, the interference value thresholds include 25, 50, 75 and 100, the network state is divided into difference, middle lower, middle upper and superior, and when the channel interference value is within the range of 0-25, the transmission channel corresponds to the network state difference; and when the channel interference value is within the range of 50-70, the transmission channel corresponds to the network state. The number of the divided network states and the interference value threshold corresponding to each network state can be adjusted according to actual requirements. Generally, the more types of network states, the more refined the network state results are.
Further, in this embodiment, the screen projection is used as an application scenario description to determine the network state, and then a more stable screen projection can be achieved. After determining the network state corresponding to each transmission channel, the screen projection terminal determines a target identifier in the terminal identifier according to a preset terminal identification code.
In order to join the network environment, the network terminal, i.e. STA or AP, needs to send out a management frame. The screen projection terminal writes data to be transmitted and a terminal identification code of the screen projection terminal into a blank frame based on a preset management frame format, so that a management frame to be transmitted is generated and transmitted. Therefore, when the terminal identification is obtained through scanning, the terminal identification can be compared with the terminal identification code of the screen projection terminal, so that the terminal identification which is the same as or corresponds to the terminal identification code of the terminal identification is determined, and the terminal identification is used as the target identification. And after the target identification is determined, taking the transmission channel corresponding to the target identification as a screen projection channel corresponding to the screen projection terminal, and judging the network state in the data transmission process based on the screen projection channel.
In a first way of determining the network state of the screen projection channel in this embodiment, a central channel in the transmission channel is directly used as a screen projection channel corresponding to the screen projection terminal. Because the central channel is a channel for the network terminal to mainly transmit data, the stability of the network environment in the screen projection process can be determined according to the network state of the central channel.
In the second way of determining the network state of the screen projection channel in this embodiment, the network state of each transmission channel corresponding to the screen projection terminal is comprehensively evaluated. The channel interference values of the transmission channels corresponding to the transmission channels can be accumulated to obtain the transmission channel interference values, a transmission channel interference value threshold value is preset, and the network state of the transmission channel is determined according to the magnitude relation between the transmission channel interference values and the transmission channel interference value threshold value.
And simultaneously acquiring the screen application to be projected, and determining screen projection parameters corresponding to the screen application to be projected according to the network state of the screen projection channel. The screen projection parameters comprise resolution negotiation parameters and display parameters, wherein the screen projection parameters refer to parameters for displaying and loading images or videos by the display terminal when the screen projection terminal sends the images or videos to the display terminal, the display parameters refer to parameters except resolution protocol parameters in the screen projection parameters, and the resolution protocol parameters refer to resolution when the display terminal displays the images or videos.
And monitoring the screen projection terminal before screen projection so as to obtain an application to be subjected to screen projection, wherein the application to be subjected to screen projection is an application of the screen projection terminal needing to perform screen projection of a display interface. And then, screen projection parameters corresponding to the screen application to be projected are determined according to the screen application to be projected and the network state corresponding to the screen projection channel. As shown in fig. 4, the process of determining the projection parameters in this embodiment is as follows:
and C10, determining resolution negotiation parameters corresponding to the screen projection application according to the network state of the screen projection channel.
Specifically, for example, a screen projection terminal is taken as a smart phone, the current smart phone basically supports a Miracast screen projection function by default, and Miracast is a video picture sharing protocol based on WiFi. Based on Miracast, the screen projection terminal needs to preset resolution negotiation parameters before projecting the screen and sends the resolution negotiation parameters to the display terminal, and the resolution negotiation parameters are used for the display terminal to determine the resolution adopted by the displayed video based on the resolution negotiation parameters. Taking the network state including network congestion and network good as an example, when the network state is network good, taking the preset good resolution as a resolution negotiation parameter; and when the network state is network congestion, using the preset congestion resolution as a resolution negotiation parameter. The good resolution and the crowded resolution are fixed values of the screen projection terminal, and can also be determined according to the resolution of the video to be displayed, for example, the highest resolution of the video to be displayed in the screen projection terminal is used as a preset good resolution; and taking the lowest resolution of the video to be displayed in the screen projection terminal as the crowding resolution. That is, the screen projection resolution corresponding to each network state can be determined according to the resolution of the video to be displayed and the preset network state.
And C20, determining display parameters corresponding to the application to be screen-projected according to the application type of the application to be screen-projected.
Specifically, the display parameters are determined according to the parameters, application types and the like of the application to be projected. In this embodiment, the display parameter is a parameter for performing screen projection display that needs to be set by the display terminal in addition to the resolution negotiation parameter, for example, the file to be displayed is a video file, and the screen projection parameter includes a frame rate, a buffer rate, a decoding mode, and the like.
A game application, a video application, a live application, and the like may be used as the to-be-screened application. In this embodiment, the applications to be screen-cast are divided into a real-time application type and a delay application type according to the requirements of the user on the screen-casting effect, where the real-time application type is an application that has a high requirement on the real-time performance of the user and has a low requirement on the display effect such as the frame rate of a video, and the like, for example, a live event application, a game application, and the like; the delay application type is an application, such as a video application, in which a user has a low requirement on real-time performance and a high requirement on a display effect, such as a frame rate of a video. Thus, step C20 includes: when the application type of the application to be screen-projected is a real-time application type, determining the screen-projecting parameter as a preset real-time screen-projecting parameter; or when the application type of the screen application to be projected is the delay application type, determining the screen projection parameter as a preset delay screen projection parameter.
Specifically, after the screen application to be projected is obtained, the application type corresponding to the screen application to be projected can be determined. The determining method can adopt a preset real-time application table and a delay application table, and after parameters such as the name of the screen application to be projected are obtained through monitoring, the application type of the screen application to be projected is determined according to the application table. And when the application to be screen-thrown is downloaded, the relevant information of the application to be screen-thrown is obtained from a downloading store or a database, so that the corresponding application type is determined. And when the application to be projected is monitored, acquiring the determined application type.
And setting real-time screen projection parameters and delay screen projection parameters in advance according to the application type of the screen projection application. The video frame rate in the real-time screen projection parameters adopts a lower frame rate or a good frame rate, the buffer value is smaller, and in addition, the adopted video decoding mode preferably selects a mode with a high processing rate so as to ensure the real-time property of the picture. The delay screen projection parameters adopt a good frame rate or a higher frame rate, a video decoding mode for optimizing the picture is performed, and the cache value is larger so as to acquire more data. In addition, a picture optimization algorithm, a frame insertion algorithm and the like can be set in the delayed screen projection parameters to make up for video frame loss and blocking caused by packet loss in the data transmission process, and provide better viewing experience for users.
Therefore, when the application type of the application to be screen-projected is a real-time application type, determining the screen-projecting parameter as a preset real-time screen-projecting parameter; and when the application type of the application to be screen-projected is a delay application type, determining the screen-projecting parameter as a preset delay screen-projecting parameter.
In addition to the two types of applications and the corresponding screen projection parameters, the game may be divided more finely according to actual needs, for example, even in game-type applications, the game may be divided according to whether the game is a game in which the user participates in pursuit of image quality and music or a game in which the user participates in pursuit of fast tempo and animation, and the screen projection parameters corresponding to the game may be set.
And after screen projection parameters are determined, screen projection data corresponding to the screen projection application are sent to the corresponding display terminal according to the screen projection parameters.
Specifically, screen projection parameters and screen projection data corresponding to screen projection applications such as videos and images to be displayed are transmitted to corresponding display terminals together, and after the display terminals receive resolution negotiation parameters, screen projection parameters and screen projection data, the screen projection data are loaded to a display interface according to the resolution negotiation parameters and the screen projection parameters, so that screen projection contents required to be presented are displayed.
Based on the foregoing network testing method, this embodiment provides a network testing apparatus, where the network testing apparatus includes:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for scanning a network environment to obtain a plurality of terminal identifications in the network environment and network parameters corresponding to the terminal identifications;
the interference value module is used for determining channel interference values corresponding to all transmission channels in the network environment according to the network parameters;
and the determining module is used for determining the channel interference value corresponding to each transmission channel in the network environment according to the network parameters.
The network testing device, wherein the network parameters include signal strength corresponding to each terminal identifier, a transmission channel corresponding to each terminal identifier, and a transmission frequency band of each transmission channel.
In the network testing apparatus, for each transmission channel, a channel interference value corresponding to the transmission channel is a sum of terminal interference values corresponding to the transmission channel, where the terminal interference value is an interference value corresponding to a different terminal identifier for the transmission channel.
The network testing device, wherein the interference value module comprises:
the initial interference value unit is used for determining an initial interference value corresponding to each terminal identifier according to the signal intensity corresponding to the terminal identifier;
and the terminal interference value unit is used for determining the terminal interference value corresponding to each transmission channel according to the initial interference value and a preset interference evaluation rule.
The network testing device, wherein the terminal interference value unit includes:
a central channel subunit, configured to determine, according to the transmission frequency band, a central channel corresponding to the terminal identifier in the transmission channel;
and the terminal interference value subunit is configured to calculate, for each transmission channel, a terminal interference value corresponding to the transmission channel according to the initial interference value and a channel distance corresponding to the transmission channel, where the channel distance is a distance between the transmission channel and the central channel.
The network testing device, wherein the terminal interference value subunit is specifically configured to:
determining an interference value calculation formula corresponding to the transmission channel according to the transmission frequency band corresponding to the terminal identification and the channel distance corresponding to the transmission channel;
and calculating a terminal interference value corresponding to the transmission channel according to the interference value calculation formula and the initial interference value.
In the network test apparatus, for each transmission channel, the channel distance corresponding to the transmission channel includes the number of transmission channels spaced between the transmission channel and the central channel.
In the network testing apparatus, for each transmission channel, a value of a terminal interference value corresponding to the transmission channel is inversely related to a value of a channel distance corresponding to the transmission channel.
The network testing device, wherein the network parameter comprises a bandwidth of each of the transmission channels; for each transmission channel, the value of the terminal interference value corresponding to the transmission channel is positively correlated with the value of the bandwidth of the transmission channel.
The network testing device, wherein the determining module is specifically configured to:
for each transmission channel, when the channel interference value corresponding to the transmission channel is greater than or equal to a preset interference value threshold value, determining that the network state of the transmission channel is network congestion; alternatively, the first and second electrodes may be,
and when the channel interference value corresponding to the transmission channel is smaller than the interference value threshold value, determining that the network state of the transmission channel is good.
The network testing device, wherein, network testing device still includes projection module, projection module includes:
the channel unit is used for determining a target identifier in the terminal identifier according to a preset terminal identification code and taking a transmission channel corresponding to the target identifier as a screen projection channel;
and the parameter unit is used for acquiring the application to be screen-projected and determining the screen projection parameters corresponding to the application to be screen-projected according to the network state of the screen projection channel.
The network test device, wherein the parameter unit includes:
the resolution subunit is configured to determine, according to the network state of the screen projection channel, a resolution negotiation parameter corresponding to the screen application to be projected;
and the display parameter subunit is used for determining the display parameters corresponding to the screen application to be projected according to the application type of the screen application to be projected.
The network testing device, wherein the display parameter subunit is specifically configured to:
when the application type of the application to be screen-projected is a real-time application type, determining the screen-projecting parameter as a preset real-time screen-projecting parameter;
and when the application type of the application to be screen-projected is a delay application type, determining the screen-projecting parameter as a preset delay screen-projecting parameter.
Based on the network testing method, the embodiment provides a computer-readable storage medium, which stores one or more programs that can be executed by one or more processors to implement the steps in the network testing method according to the embodiment.
Based on the above network testing method, the present invention further provides a terminal device, as shown in fig. 5, which includes at least one processor (processor) 20; a display screen 21; and a memory (memory)22, and may further include a communication Interface (Communications Interface)23 and a bus 24. The processor 20, the display 21, the memory 22 and the communication interface 23 can communicate with each other through the bus 24. The display screen 21 is configured to display a user guidance interface preset in the initial setting mode. The communication interface 23 may transmit information. The processor 20 may call logic instructions in the memory 22 to perform the methods in the embodiments described above.
Furthermore, the logic instructions in the memory 22 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product.
The memory 22, which is a computer-readable storage medium, may be configured to store a software program, a computer-executable program, such as program instructions or modules corresponding to the methods in the embodiments of the present disclosure. The processor 20 executes the functional applications and data processing, i.e. implements the methods in the above embodiments, by running software programs, instructions or modules stored in the memory 22.
The memory 22 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 22 may include a high speed random access memory and may also include a non-volatile memory. For example, a variety of media that can store program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, may also be used as the transient computer readable storage medium.
In addition, the specific processes loaded and executed by the instruction processors in the computer-readable storage medium and the terminal device are described in detail in the method, and are not stated herein.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (16)
1. A method for network testing, the method comprising:
scanning a network environment to obtain a plurality of terminal identifications in the network environment and network parameters corresponding to the terminal identifications;
determining a channel interference value corresponding to each transmission channel in the network environment according to the network parameters;
and aiming at each transmission channel, determining the network state corresponding to the transmission channel according to the channel interference value corresponding to the transmission channel.
2. The network testing method according to claim 1, wherein the network parameters include signal strength corresponding to each of the terminal identifiers, transmission channels corresponding to each of the terminal identifiers, and transmission frequency bands of each of the transmission channels.
3. The network testing method according to claim 2, wherein for each of the transmission channels, the channel interference value corresponding to the transmission channel is a sum of terminal interference values corresponding to the transmission channel, and the terminal interference value is an interference value corresponding to a different terminal identifier for the transmission channel.
4. The network testing method according to claim 3, wherein the determining, according to the network parameter, a channel interference value corresponding to each transmission channel in the network environment specifically includes:
aiming at each terminal identification, determining an initial interference value corresponding to the terminal identification according to the signal intensity corresponding to the terminal identification;
and determining a terminal interference value corresponding to each transmission channel according to the initial interference value and a preset interference evaluation rule.
5. The network test method according to claim 4, wherein the determining, according to the initial interference value and a preset interference evaluation rule, a terminal interference value corresponding to each transmission channel specifically includes:
determining a central channel corresponding to the terminal identification in the transmission channel according to the transmission frequency band;
and aiming at each transmission channel, calculating a terminal interference value corresponding to the transmission channel according to the initial interference value and a channel distance corresponding to the transmission channel, wherein the channel distance is the distance between the transmission channel and the central channel.
6. The network testing method according to claim 5, wherein the calculating a terminal interference value corresponding to the transmission channel according to the initial interference value and the channel distance corresponding to the transmission channel specifically comprises:
determining an interference value calculation formula corresponding to the transmission channel according to the transmission frequency band corresponding to the terminal identification and the channel distance corresponding to the transmission channel;
and calculating a terminal interference value corresponding to the transmission channel according to the interference value calculation formula and the initial interference value.
7. The network testing method of claim 5, wherein for each of the transmission channels, the channel distance corresponding to the transmission channel comprises the number of transmission channels spaced from the central channel by the transmission channel.
8. The network testing method of claim 5, wherein for each of the transmission channels, the value of the terminal interference value corresponding to the transmission channel is inversely related to the value of the channel distance corresponding to the transmission channel.
9. The network test method of claim 3, wherein the network parameters include a bandwidth of each of the transmission channels;
for each transmission channel, the value of the terminal interference value corresponding to the transmission channel is positively correlated with the value of the bandwidth of the transmission channel.
10. The network testing method according to claim 1, wherein the determining, for each of the transmission channels, a network state corresponding to the transmission channel according to the channel interference value corresponding to the transmission channel specifically includes:
for each transmission channel, when the channel interference value corresponding to the transmission channel is greater than or equal to a preset interference value threshold value, determining that the network state of the transmission channel is network congestion; alternatively, the first and second electrodes may be,
and when the channel interference value corresponding to the transmission channel is smaller than the interference value threshold value, determining that the network state of the transmission channel is good.
11. The network testing method according to any one of claims 5 to 10, wherein after determining the network state corresponding to the transmission channel according to the channel interference value corresponding to the transmission channel for each of the transmission channels, the method further comprises:
determining a target identifier in the terminal identifiers according to a preset terminal identification code, and taking a transmission channel corresponding to the target identifier as a screen projection channel;
and acquiring the application to be screen-projected, and determining screen-projecting parameters corresponding to the application to be screen-projected according to the network state of the screen-projecting channel.
12. The network test method of claim 11, wherein the screen projection parameters comprise a resolution negotiation parameter and a display parameter; determining screen projection parameters corresponding to the application to be screen projected according to the network state of the screen projection channel, specifically comprising:
determining resolution negotiation parameters corresponding to the application to be screen-projected according to the network state of the screen-projecting channel;
and determining display parameters corresponding to the application to be projected according to the application type of the application to be projected.
13. The network test method of claim 12, wherein the application types include a real-time application type and a delayed application type; the determining, according to the application type of the application to be screen-projected, a display parameter corresponding to the application to be screen-projected specifically includes:
when the application type of the application to be screen-projected is a real-time application type, determining the screen-projecting parameter as a preset real-time screen-projecting parameter;
and when the application type of the application to be screen-projected is a delay application type, determining the screen-projecting parameter as a preset delay screen-projecting parameter.
14. A network test apparatus, the apparatus comprising:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for scanning a network environment to obtain a plurality of terminal identifications in the network environment and network parameters corresponding to the terminal identifications;
an interference value module, configured to determine, according to the network parameter, a channel interference value corresponding to each transmission channel in the network environment;
and the determining module is used for determining the channel interference value corresponding to each transmission channel in the network environment according to the network parameters.
15. A computer readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to perform the steps of the network testing method of any one of claims 1 to 13.
16. A terminal device, comprising: a processor, a memory, and a communication bus; the memory has stored thereon a computer readable program executable by the processor;
the communication bus realizes the connection communication between the processor and the memory;
the processor, when executing the computer readable program, implements the steps in the network testing method of any of claims 1-13.
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