WO2020108506A1 - 干扰源识别方法、相关设备及计算机存储介质 - Google Patents

干扰源识别方法、相关设备及计算机存储介质 Download PDF

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Publication number
WO2020108506A1
WO2020108506A1 PCT/CN2019/121122 CN2019121122W WO2020108506A1 WO 2020108506 A1 WO2020108506 A1 WO 2020108506A1 CN 2019121122 W CN2019121122 W CN 2019121122W WO 2020108506 A1 WO2020108506 A1 WO 2020108506A1
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Prior art keywords
rate
channel
correlation coefficient
frequency interference
same
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PCT/CN2019/121122
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English (en)
French (fr)
Inventor
丁律
吴俊�
史济源
尘福兴
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华为技术有限公司
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Priority to EP19888694.7A priority Critical patent/EP3820191A4/en
Priority to JP2021511632A priority patent/JP7147049B2/ja
Publication of WO2020108506A1 publication Critical patent/WO2020108506A1/zh
Priority to US17/173,253 priority patent/US11909675B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/345—Interference values
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • the present invention relates to the field of communication technologies, and in particular, to an interference source identification method, related equipment, and computer storage media.
  • Co-channel interference means that the carrier frequency of the interfering signal is the same as the carrier frequency of the useful signal, and the interference caused by the interfering signal to the receiver receiving the useful signal.
  • frequency reuse technology is usually used, so that there will be multiple access points (access points using the same frequency) in a certain area.
  • AP such as conference halls, student dorms, and libraries, usually deploy multiple APs that use the same frequency to meet the user's needs.
  • STA station
  • STA station
  • co-frequency interference problems occur in other APs, you need to determine the interfering sites that constitute co-frequency interference to the AP, and then you can process the interfering sites to reduce or eliminate them Co-channel interference.
  • the embodiments of the present application disclose an interference source identification method, related equipment, and a computer storage medium, which can identify an interference source that causes co-frequency interference to an AP.
  • an interference source identification method including:
  • the first parameter includes a co-channel interference rate of a first access point in a preset time period, a utilization rate of a second access point's receiving channel in the preset time period, and the second access point The utilization rate of the transmission channel of the entry point in the preset time period, and the reception frame rate of the second access point receiving the data sent by the first station in the preset time period;
  • the first parameter satisfies the first preset condition, it is determined that the data sent by the first station to the second access point constitutes co-frequency interference to the first access point.
  • the preset time period includes one or more sampling periods
  • the co-channel interference rate is the ratio of the time that the first access point receives interference data in the sampling period and the sampling period;
  • the utilization rate of the receiving channel is a ratio of the time during which the second access point receives useful data in the sampling period and the sampling period;
  • the transmission channel utilization rate is a ratio of the time that the second access point sends data in the sampling period to the sampling period;
  • the receiving frame rate is a frame rate at which the second access point receives data sent by the first station during the sampling period.
  • the co-frequency interference rate is related to the receive channel utilization rate
  • the same If the frequency interference rate is not related to the transmission channel utilization rate, the reception frame rate is related to the reception channel utilization rate, and the average reception frame rate of the reception frame rate is greater than the reception frame rate threshold, determine the first The data sent by a station to the second access point constitutes co-channel interference to the first access point, wherein the average value of the received frame rate is the value of the received frame rate collected in the one or more sampling periods average value.
  • the first correlation coefficient of the co-channel interference rate and the receive channel utilization rate is greater than a first correlation threshold, it is determined that the co-channel interference rate is related to the receive channel utilization rate; wherein, the first The correlation coefficient includes any one of Pearson correlation coefficient, Spearman correlation coefficient or Kendall correlation coefficient;
  • the second correlation coefficient of the co-channel interference rate and the transmission channel utilization rate is less than the second correlation threshold, it is determined that the co-channel interference rate and the transmission channel utilization rate are not correlated; wherein, the first The second correlation coefficient includes any one of Pearson correlation coefficient, Spearman correlation coefficient or Kendall correlation coefficient;
  • the third correlation coefficient of the received frame rate and the utilization rate of the received channel is greater than a third correlation threshold, it is determined that the received frame rate and the utilization rate of the received channel are related; wherein, the third correlation coefficient Including any one of Pearson correlation coefficient, Spearman correlation coefficient or Kendall correlation coefficient.
  • the fourth correlation coefficient of the co-frequency interference rate and the utilization rate of the receiving channel is less than a fourth correlation threshold, it is determined that the co-frequency interference rate is related to the utilization rate of the receiving channel;
  • the sixth correlation coefficient of the received frame rate and the utilization rate of the received channel is less than a sixth correlation threshold, it is determined that the received frame rate is related to the utilization rate of the received channel;
  • the fourth correlation coefficient, the fifth correlation coefficient and the sixth correlation coefficient are time warping distances.
  • Determining a second parameter composed of any one or more of the mean value of the same-frequency interference rate, the peak value of the same-frequency interference rate, or the ratio of the share of the same-frequency interference rate, and the mean value of the same-frequency interference rate is the number of multiple acquisitions in the preset time period
  • the average value of the same-frequency interference rate; the peak value of the same-frequency interference rate is the maximum value among the multiple same-frequency interference rates; the proportion of the same-frequency interference rate is greater than the The proportion of the same-frequency interference rate of the same-frequency interference rate among the multiple same-frequency interference rates;
  • the preset condition that the mean value of the same frequency interference rate satisfies includes: the mean value of the same frequency interference rate is greater than the mean value of the same frequency interference rate threshold;
  • the preset condition that the peak of the same-frequency interference rate satisfies the peak of the same-frequency interference rate is greater than the threshold of the peak of the same-frequency interference rate;
  • the preset condition that the ratio of the same frequency interference rate satisfies includes: the ratio of the same frequency interference rate is greater than the threshold of the ratio of the same frequency interference rate.
  • the acquiring the first parameter includes: acquiring the acquisition The first parameter collected by the device.
  • the interference source identification method it can be determined whether data sent by stations within the coverage area of the second access point will cause co-frequency interference to the first access point. If the data sent by the stations within the coverage area of the point will cause co-channel interference to the first access point, it may be further determined that the co-channel interference to the first access point within the coverage area of the second access point Interfering with a site, so that the site can be processed to reduce or eliminate co-channel interference from the site to the first access point.
  • an interference source identification device in a second aspect, provides an interference source identification device, and the device includes:
  • An obtaining module configured to obtain a first parameter, the first parameter including a co-channel interference rate of a first access point in a preset time period, a receiving channel utilization rate of a second access point in the preset time period, A transmission channel utilization rate of the second access point in the preset time period, and a reception frame rate of the second access point receiving data sent by the first station in the preset time period;
  • the processing module is configured to determine that the data sent by the first station to the second access point constitutes co-frequency interference to the first access point when the first parameter meets a preset condition.
  • the preset time period includes one or more sampling periods
  • the co-channel interference rate is the ratio of the time that the first access point receives interference data in the sampling period and the sampling period;
  • the receiving channel utilization rate is a ratio of the time that the second access point receives useful data in the sampling period and the sampling period;
  • the transmission channel utilization rate is a ratio of the time that the second access point sends data in the sampling period to the sampling period;
  • the receiving frame rate is a frame rate at which the second access point receives data sent by the first station during the sampling period.
  • the processing module is specifically configured to:
  • the co-channel interference rate is related to the receive channel utilization rate
  • the co-channel interference rate is not related to the transmit channel utilization rate
  • the receive frame rate is related to the receive channel utilization rate
  • the receive frame is related to the receive channel utilization rate
  • the receive frame is related to the receive channel utilization rate
  • the receive frame is related to the receive channel utilization rate
  • the receive frame is related to the receive channel utilization rate
  • the receive frame is related to the receive channel utilization rate
  • the receive frame When the average value of the received frame rate of the rate is greater than the threshold value of the received frame rate, it is determined that the data sent by the first station to the second access point constitutes co-channel interference to the first access point, wherein the receiving The average frame rate is the average of the received frame rates collected in the one or more sampling periods.
  • the processing module is specifically configured to:
  • the first correlation coefficient of the co-channel interference rate and the receive channel utilization rate is greater than a first correlation threshold, it is determined that the co-channel interference rate is related to the receive channel utilization rate; wherein, the first The correlation coefficient is any one of Pearson correlation coefficient, Spearman correlation coefficient or Kendall correlation coefficient;
  • the second correlation coefficient of the co-channel interference rate and the transmission channel utilization rate is less than the second correlation threshold, it is determined that the co-channel interference rate and the transmission channel utilization rate are not correlated; wherein, the first The second correlation coefficient is any one of Pearson correlation coefficient, Spearman correlation coefficient or Kendall correlation coefficient;
  • the third correlation coefficient of the received frame rate and the utilization rate of the received channel is greater than a third correlation threshold, it is determined that the received frame rate and the utilization rate of the received channel are related; wherein, the third correlation coefficient It is any one of Pearson correlation coefficient, Spearman correlation coefficient, or Kendall correlation coefficient.
  • the processing module is specifically configured to:
  • the fourth correlation coefficient of the co-frequency interference rate and the utilization rate of the receiving channel is less than a fourth correlation threshold, it is determined that the co-frequency interference rate is related to the utilization rate of the receiving channel;
  • the sixth correlation coefficient of the received frame rate and the utilization rate of the received channel is less than a sixth correlation threshold, it is determined that the received frame rate is related to the utilization rate of the received channel;
  • the fourth correlation coefficient, the fifth correlation coefficient and the sixth correlation coefficient are time warping distances.
  • the processing module is further configured to:
  • Determining a second parameter composed of any one or more of the mean value of the same frequency interference rate, the peak value of the same frequency interference rate, or the ratio of the same frequency interference rate, and the mean value of the same frequency interference rate is the number of multiple acquisitions in the multiple sampling periods
  • the preset condition that the mean value of the same frequency interference rate satisfies includes: the mean value of the same frequency interference rate is greater than the mean value of the same frequency interference rate threshold;
  • the preset condition that the peak of the same-frequency interference rate satisfies the peak of the same-frequency interference rate is greater than the threshold of the peak of the same-frequency interference rate;
  • the preset condition that the ratio of the same frequency interference rate satisfies includes: the ratio of the same frequency interference rate is greater than the threshold of the ratio of the same frequency interference rate.
  • the acquisition module is specifically configured to acquire the One parameter.
  • an embodiment of the present application provides a network device, including a processor, a communication interface, and a memory; the memory is used to store instructions, the processor is used to execute the instructions, and the communication interface is used to receive or send Data; wherein, when the processor executes the instruction, the method described in the first aspect or any possible implementation manner of the first aspect above is executed.
  • the present application provides a non-transitory computer storage medium that stores a computer program, and when the computer program is executed by a processor, the above-mentioned first aspect or any possible aspect of the first aspect is implemented The method described in the embodiment.
  • FIG. 1 is a schematic diagram of an access point as a hidden node provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of a site that is a hidden node of each other provided by an embodiment of the present application;
  • FIG. 3 is a schematic diagram of a scenario of applying an interference source identification method provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a method for identifying an interference source according to an embodiment of the present application
  • FIG. 5 is a schematic flowchart of another method for identifying an interference source according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of an interference source identification device provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of an interference source identification device provided by an embodiment of the present application.
  • Scenario 1 As shown in Figure 1, in Figure 1, the first access point AP1 and the second access point AP2 use the same channel. Due to distance or other factors, AP1 and AP2 cannot communicate directly, you can connect AP1 It is called the hidden node of AP2, and AP2 is called the hidden node of AP1, that is, AP1 and AP2 are hidden nodes from each other.
  • Station (STA)1 is located in the overlapping coverage area of AP1 and AP2, and AP1 and AP2 are within the signal coverage of STA1. If STA1 and AP2 communicate, when STA1 sends a signal to AP2, the signal sent by STA1 will also Received by AP1, causing co-channel interference to AP1.
  • Scenario 2 As shown in Figure 2, in Figure 2, STA2 and STA3 can directly transmit data with the third access point AP3, but due to distance or other factors, STA2 and STA3 cannot communicate directly, that is, STA2 and STA3 Mutually hidden nodes. If STA2 and STA3 send signals to the AP at the same time, because the AP cannot process the two signals at the same time, the AP will not be able to correctly analyze the signals sent by STA2 and STA3, which will result in data transmission failure.
  • the above scene in FIG. 1 is referred to as an AP mutual hidden node scene, and the above scene in FIG. 2 is referred to as an STA mutual hidden node scene.
  • a request to send/clear to send (RTS/CTS) solution can be used to solve the problem that STAs are hidden nodes of each other.
  • RTS/CTS request to send/clear to send
  • STA2 needs to send data to AP3
  • STA2 first sends an RTS frame to AP3.
  • the RTS frame is used to reserve channel usage rights to AP3.
  • AP3 sends a reply to the STA in the coverage area of AP3.
  • STA2 can send data to AP3, and other STAs such as STA3 remain silent after receiving the CTS frame, thereby preventing two or more STAs from sending data to the AP at the same time.
  • the RTS/CTS solution cannot solve the problem of co-frequency interference in scenarios where APs are hidden nodes.
  • the interference source such as forcing the interference source STA to switch the frequency band or the STA.
  • an embodiment of the present application provides a method for identifying an interference source.
  • the network shown in FIG. 3 The interference source identification method is introduced.
  • the STA may be a mobile phone, a tablet (personal computer), a personal digital assistant (PDA), a mobile internet device (MID) or a wearable device
  • PDA personal digital assistant
  • MID mobile internet device
  • the AP may be a device such as a wireless router that can form a wireless local area network, which is not specifically limited in the embodiments of the application.
  • FIG. 4 is a schematic flowchart of a method for identifying an interference source according to an embodiment of the present application. The method includes:
  • the first parameter includes the co-channel interference rate CCI AP1 of the first access point AP1 in a preset time period and the reception of the second access point AP2 in the preset time period
  • the preset time period includes one or more sampling periods, and the co-channel interference rate is the ratio of the time that AP1 receives interference data in one of the sampling periods and the sampling period; the receiving channel utilization The ratio is the ratio of the time that AP2 receives useful data to the sampling period in one sampling period; the transmission channel utilization rate is the time and data that the AP2 sends data in one sampling period.
  • a ratio of the sampling period; the receiving frame rate is a receiving rate at which the AP2 receives data sent by the STA1 within a sampling period.
  • AP1 takes 4 seconds to receive useful data, 2 seconds to send data, and 2 seconds to receive interference data. Is 3 seconds, then the co-frequency interference rate of the AP1 is 30%.
  • the time taken by AP2 to receive useful data is 5 seconds, the time taken to send data is 2 seconds, and the time taken to receive interference data is 1 second.
  • the utilization rate of AP2's receive channel is 50%.
  • the channel utilization rate is 20%, and the co-channel interference rate is 10%.
  • AP2 receives the data sent by STA1 and STA2, where the time taken to receive the data sent by STA1 is 2 seconds, and a total of 2400 frames of data sent by STA1 are received, within this sampling period,
  • the reception frame rate of AP2 corresponding to STA1 is 1200, which also indicates that the transmission frame rate of STA1 in the sampling period is 1200.
  • the collector collects the co-channel interference rate of the AP1, the utilization rate of the reception channel of the AP2, the utilization rate of the transmission channel of the AP2, and the reception of data received by the AP2 from the first station STA1 every 10 seconds For the frame rate, the collector collects the above data five times within a preset time period to form the first parameter, and the interference source identification device obtains the first parameter collected by the collector every 50 seconds.
  • the collector may be located in an AP, and each AP integrates a collector; the collector may also be a separate device, wired or wirelessly connected to the AP and the interference source identification device Connection, the collector may also be integrated into the interference source identification device, and the embodiment of the present application does not make specific limitations.
  • the preset conditions include:
  • the preset condition 1 the same-frequency interference rate CCI AP1 of the AP1 in a preset time period is related to the reception channel utilization rate RX AP2 of the AP2 in the preset time period;
  • Preset condition 2 the same-frequency interference rate CCI AP1 of the AP1 in a preset time period is not related to the transmission channel utilization TX AP2 of the AP2 in the preset time period;
  • Preset condition 3 The AP2 receives the frame rate V STA of the data sent by STA1 in the preset time period and the received channel utilization rate RX AP2 of the second access point AP2 in the preset time period is related ;
  • Preset Condition 4 The AP2 receives the frame rate V data received from STA1 during the preset period of time V STA 's average received frame rate V mean is greater than the received frame rate threshold TH sta , the average received frame rate V mean is at The average value of multiple received frame rates collected in multiple sampling periods of the preset time period.
  • the first parameter satisfies the above four conditions, it is determined that the data sent by the first station to the second access point constitutes co-channel interference to the first access point.
  • determining whether the two sets of data are related can be calculated by calculating the correlation coefficient between the two sets of data, and determining whether the two sets of data are related according to whether the correlation coefficients between the two sets of data meet the threshold requirements.
  • the correlation coefficient used to determine whether the two sets of data are correlated can be any of the four coefficients of pearson correlation coefficient, Spearman correlation coefficient, Kendall kendall correlation coefficient, or time warpage distance, this application The embodiments are not specifically limited.
  • the time warping distance is calculated by a dynamic time warping (DTW) algorithm.
  • the interference source identification device calculates the inter-frequency interference rate CCI AP1 of the AP1 in a preset time period and the receiving channel utilization rate RX AP2 of the AP2 in a preset time period A correlation coefficient to determine whether the co-channel interference rate CCI AP1 and the receive channel utilization rate RX AP2 are related; calculate the co-channel interference rate CCI AP1 of the AP1 and the AP2 at the preset time period A correlation coefficient between the transmission channel utilization TX AP2 of the preset time period to determine whether the co-channel interference rate CCI AP1 is not related to the transmission channel utilization TX AP2 ; calculate that AP2 receives the STA1 V STA receives the frame rate of the transmitted data with the correlation coefficient between the AP2 preset time period AP2 receives the RX channel utilization to determine if the received frame rate V STA channel utilization with the reception of the RX AP2 Whether the time is related.
  • the co-frequency is calculated Pearson correlation coefficient between the interference rate CCI AP1 and the received channel utilization RX AP2 two sets of data, if the pearson correlation coefficient between the two sets of data is greater than the first threshold, the co-frequency interference rate CCI AP1 and the reception channel are determined The utilization ratio RX AP2 is correlated. If the pearson correlation coefficient between the two sets of data is less than or equal to the first threshold, it is determined that the co-channel interference rate CCI AP1 is not correlated with the reception channel utilization RX AP2 .
  • the three coefficients of pearson correlation coefficient, spearman correlation coefficient, and kendall correlation coefficient are all absolute values greater than a preset threshold, it indicates that the two sets of data are correlated, and the time warpage distance is an absolute value. When it is less than a preset threshold, it indicates that the two sets of data are related. Therefore, when determining whether the two sets of data are related according to the correlation coefficient between the two sets of data, the type of correlation coefficient selected for calculation is different to determine the two sets of data. The requirements to be met are also different depending on whether they are related. Specifically, the requirements that satisfy the above-mentioned preset condition 1, preset condition 2, and preset condition 3 include:
  • the first correlation coefficient is any one of Pearson correlation coefficient, Spearman correlation coefficient, or Kendall correlation coefficient; or, the fourth correlation coefficient between the co-channel interference rate and the receive channel utilization rate is less than the fourth
  • a correlation threshold it is determined that the co-channel interference rate is related to the receive channel utilization rate, and the fourth correlation coefficient is the time warping distance
  • the second correlation coefficient of the co-channel interference rate and the transmission channel utilization rate When the absolute value of the second correlation coefficient of the co-channel interference rate and the transmission channel utilization rate is less than a second correlation threshold, it is determined that the co-channel interference rate and the transmission channel utilization rate are not related; wherein, The second correlation coefficient is any one of Pearson correlation coefficient, Spearman correlation coefficient, or Kendall correlation coefficient; or, the fifth correlation coefficient of the co-channel interference rate and the transmission channel utilization rate is greater than In the case of five correlation thresholds, it is determined that the co-channel interference rate and the transmission channel utilization rate are not related, and the fifth correlation coefficient is the time warping distance;
  • the absolute value of the third correlation coefficient of the received frame rate and the received channel utilization rate is greater than a third correlation threshold, it is determined that the received frame rate is related to the received channel utilization rate; wherein, the first The three correlation coefficients are any one of Pearson correlation coefficient, Spearman correlation coefficient or Kendall correlation coefficient; or, the sixth correlation coefficient of the received frame rate and the received channel utilization rate is less than the sixth correlation threshold In the case, it is determined that the received frame rate is related to the received channel utilization rate, and the sixth correlation coefficient is the time warping distance;
  • the first correlation threshold, the second correlation threshold and the third correlation threshold are all positive real numbers less than 1, the second correlation threshold is less than or equal to the first correlation threshold, the second The correlation threshold is less than or equal to the third correlation threshold.
  • the fourth correlation threshold is less than or equal to the fifth correlation threshold, and the sixth correlation threshold is less than or equal to the fifth correlation threshold.
  • the number of data in the two sets of data must be the same, and the DTW algorithm does not require that the number of data in the two sets of data is completely the same.
  • the interference source identification device first acquires to participate in the calculation
  • the number of data in each of the two sets of data in the two sets of data if the number of data in the two sets of data is the same, the correlation coefficient may be the Pearson correlation coefficient, Spearman correlation coefficient, Kendall kendall correlation coefficient or Any one of the four coefficient types of time warpage distance; if the number of data in the two sets of data is different, the correlation coefficient is time warpage distance.
  • the interference source identification device determines that the same-frequency interference source CCI AP1 and the reception channel utilization rate RX AP2 include the same number of data, it can calculate the same-frequency interference source CCI AP1 and the reception channel utilization
  • the correlation coefficient between the rate RX AP2 is as follows: pearson correlation coefficient, spearman correlation coefficient, kendall correlation coefficient, or time warping distance, to determine whether the co-channel interference source CCI AP1 is related to the receive channel utilization RX AP2 .
  • the interference source identification device determines that the number of data included in the co-channel interference source CCI AP1 and the reception channel utilization rate RX AP2 is different, it can only calculate the co-channel interference source CCI AP1 and reception channel utilization rate RX The time warping distance between AP2 , and whether the co-channel interference source CCI AP1 and the receiving channel utilization rate RX AP2 are related according to the time warping distance.
  • the DTW algorithm does not require that the number of data in the two sets of data is exactly the same when calculating the time warping distance of the two sets of data. Whether the number of the two sets of data is the same, reduces the calculation amount of the interference source identification device, improves the calculation efficiency, and can set the correlation coefficients as the time warping distance, which is not specifically limited in the embodiments of the present application.
  • the STA1 when the STA1 forms co-frequency interference with the AP1, the AP2 is a hidden node of the AP1, and the STA1 is AP2 sends data, that is, when it is determined that the data sent by STA1 to AP2 constitutes co-channel interference to AP1, it may be determined that AP2 is a hidden node of AP1, and then determine that STA1 sends to AP2 The transmitted data constitutes co-channel interference to the AP1.
  • the step S120 may include the following steps:
  • S1201 Determine the mean value of the received frame rate and the received frame rate when the same-frequency interference rate is related to the utilization rate of the received channel and the same-frequency interference rate is not related to the utilization rate of the transmission channel It is related to the utilization rate of the receiving channel.
  • the interference source identification device After acquiring the first parameter, the interference source identification device first calculates the correlation coefficient between the co-channel interference rate and the receiving channel utilization rate and the co-channel interference rate and the transmission channel utilization rate Correlation coefficient. If the absolute value of the first correlation coefficient of the co-channel interference rate and the reception channel utilization rate is greater than the first correlation threshold, or, if the fourth correlation coefficient of the co-channel interference rate and the reception channel utilization rate is If the absolute value is less than the fourth correlation threshold, it is determined that the co-frequency interference rate is related to the utilization rate of the receiving channel, that is, the data received by the AP2 will cause co-frequency interference to the AP1.
  • the co-frequency interference rate and the transmission channel utilization rate are not related, that is, the data sent by AP2 does not cause interference to AP1.
  • the data sent by AP2 does not cause the same-frequency interference to AP1, it means that AP2 and AP1 cannot directly communicate, and the data received by AP2 will cause the same-frequency interference to AP1, indicating that the area covered by AP2
  • the data sent by the STA that communicates with the AP2 within range will cause co-frequency interference to the AP1, that is, the AP2 is a hidden node of the AP1.
  • the average value of the received frame rate corresponding to the received frame rate collected in multiple collection periods in the preset time period, and the received frame rate and the utilization of the received channel The correlation coefficient between rates.
  • the absolute value of the third correlation coefficient of the reception frame rate and the utilization rate of the reception channel is greater than a third correlation threshold, or the sixth correlation coefficient of the reception frame rate and the utilization rate of the reception channel is less than the sixth correlation
  • a threshold it is determined that the received frame rate is related to the received channel utilization; the absolute value of the third correlation coefficient of the received frame rate and the received channel utilization is less than or equal to the third correlation threshold, or
  • the sixth correlation coefficient of the received frame rate and the utilization rate of the received channel is greater than or equal to a sixth correlation threshold, it is determined that the received frame rate is not related to the utilization rate of the received channel.
  • the average value of the received frame rate may be any one of the arithmetic average, geometric average, or weighted average of the multiple received frame
  • V mean is greater than the threshold value of the received frame rate TH sta , and the received frame rate and the Receiving the channel utilization rate, it means that the data sent by STA1 within the coverage area of AP2 to AP2 causes co-frequency interference to AP1, and uses STA1 as the co-frequency interference source of AP1.
  • an interfering site that causes co-frequency interference to the first access point within the coverage of the second access point may be further determined, so that the site may be processed to reduce or eliminate the site’s Co-channel interference of the first access point.
  • the multiple The same-frequency interference rate is calculated to obtain any one or more of the same-frequency interference rate average CCI mean , the same-frequency interference rate peak value CCI max, or the same-frequency interference rate ratio CCI pro , where the CCI mean is the preset time The average value of the multiple co-channel interference rates in the period; the CCI max is the maximum value of the multiple co-frequency interference rates in the preset time period; the CCI pro is the preset time period Among the multiple co-frequency interference rates, a ratio of the co-frequency interference rate greater than the average of the co-frequency interference rates in the multiple co-frequency interference rates; the CCI mean may be the multiple co-frequency interference rates Any one of the arithmetic average, geometric average or weighted average, the arithmetic average is taken as an example in the embodiments of the present
  • the second parameter In addition to satisfying that the co-channel interference rate is related to the receiving channel utilization rate and that the co-channel interference rate is not related to the transmission channel utilization rate, the second parameter Each parameter satisfies the corresponding preset condition, and then it can be determined that AP2 is a hidden node of AP1, and then whether the received frame rate is related to the received channel utilization rate is determined, wherein:
  • the preset condition that the CCI mean needs to be satisfied is that the CCI mean is greater than the same-frequency interference rate average threshold TH mean ;
  • the preset condition that the CCI max needs to be satisfied is that the CCI max is greater than the peak threshold TH max of the co-frequency interference rate;
  • the preset condition that the CCI pro needs to meet is that the CCI pro is greater than the threshold TH pro of the co-frequency interference rate.
  • the Set multiple reception frame rates V STA ⁇ V 1 , V 2 ,...V i ⁇ collected during multiple sampling periods in the time period to calculate the peak reception frame rate V max or the ratio of the reception frame rate V pro Any one or more of the above, wherein the peak value of the received frame rate V max is the maximum value among the multiple received frame rates; the ratio of the received frame rate V pro is among the multiple received frame rates, greater than The ratio of the received frame rate of the mean received frame rate V mean among the multiple received frame rates.
  • the V mean may be any one of the arithmetic average, geometric average, or weighted average of the multiple co-channel interference rates.
  • the V max or the Any one or more data in the V pro is used as the third parameter.
  • the received frame needs to be
  • the rate average value V mean being greater than the receiving frame rate threshold TH sta and the receiving frame rate being related to the receiving channel utilization rate
  • each of the third parameters also needs to satisfy their respective preset conditions, among them,
  • the preset condition that the V max needs to meet is that the V max is greater than the peak threshold of the received frame rate
  • the preset condition that the V pro needs to meet is that the V pro is greater than the threshold of the received frame rate.
  • STA1 within the coverage of AP2 is used as an example to explain how to determine when STA1 within the coverage of AP2 sends data to AP2 after determining that AP2 is a hidden node of AP1.
  • the AP1 constitutes co-channel interference.
  • the interference source identification device can obtain the transmission frame rate of any one STA other than the STA1 within the coverage area of the AP2 (that is, the reception frame rate of the AP2 receiving data sent by the STA) To determine whether the data sent by any one STA in the coverage area of AP2 to AP2 constitutes co-frequency interference to AP1, so as to find out all STAs in the coverage area of AP2 that cause co-frequency interference to AP1.
  • the interference source identification device may also obtain parameters such as the transmission channel utilization rate and the reception channel utilization rate of the access point such as AP3 in FIG. Whether the entry point is a hidden node of the AP1, and then determine a plurality of hidden nodes of the AP1 and a STA under each hidden node that causes co-frequency interference to the AP1.
  • the method for identifying the interference source will be described below through specific examples.
  • the preset time period is 25 seconds, that is, the interference source identification device obtains the data from the collector every 25 seconds.
  • the correlation coefficient may be a pearson correlation coefficient, a spearman correlation coefficient, a kendall correlation coefficient, or a time warpage distance
  • the pearson correlation coefficient is defined as: the Pearson correlation coefficient ⁇ (X,Y) between the two variables (X,Y) is the covariance cov(X,Y) between the two variables and the standard of the two continuous variables The ratio of the difference product, ie
  • E(X) represents the mathematical expectation of variable X
  • E(Y) represents the mathematical expectation of variable Y
  • E(XY) represents the mathematical expectation of XY
  • ⁇ X represents the standard deviation of variable X
  • ⁇ Y represents the standard of variable Y difference.
  • the calculation formula of the correlation coefficient P1 (CCI AP1 , RX AP2 ) between the co-channel interference rate and the utilization rate of the receiving channel is:
  • E(CCI AP1 ) represents the mathematical expectation of the five co-channel interference rates in the variable CCI AP1
  • E(RX AP2 ) represents the mathematical expectation of the utilization rate of the five receiving channels in the variable RX AP2
  • E(CCI AP1 RX AP2 ) represents The mathematical expectation of CCI AP1 RX AP2
  • ⁇ CCIAP1 represents the standard deviation of the variable CCI AP1
  • ⁇ RXAP2 represents the standard deviation of the variable RX AP2 .
  • the calculation formula of the correlation coefficient P2 (CCI AP1 , TX AP2 ) between the co-channel interference rate and the transmission channel utilization rate is:
  • E (TX AP2 ) represents the mathematical expectation of the utilization rate of the five receiving channels in the variable TX AP2
  • E (CCI AP1 TX AP2 ) represents the mathematical expectation of CCI AP1 TX AP2
  • ⁇ TXAP2 represents the standard deviation of the variable TX AP2 .
  • E(V STA ) represents the mathematical expectation of five received frame rates in the variable V STA
  • E(V STA RX AP2 ) represents the mathematical expectation of V STA RX AP2
  • ⁇ VSTA represents the standard deviation of the variable V STA .
  • P1 (CCI AP1 , RX AP2 ) is greater than the first correlation threshold of 0.7
  • P2 (CCI AP1 , TX AP2 ) is less than the second correlation threshold of 0.3
  • P3 (V STA , RX AP2 ) is greater than the third correlation
  • the threshold value is 0.7
  • the average value of the received frame rate is greater than the threshold value of the received frame rate, that is, the co-frequency interference rate is related to the receive channel utilization rate, the co-frequency interference rate is not related to the transmit channel utilization rate
  • the received frame rate is related to the received channel utilization rate
  • the average received frame rate of the received frame rate is greater than the received frame rate threshold, so it is determined that the data sent by the STA1 to the AP2 constitutes co-frequency interference to the AP1 .
  • FIG. 6 is a schematic structural diagram of an interference source identification device according to an embodiment of the present invention.
  • the device 600 includes an acquisition module 602 and a processing module 604.
  • the processing module 604 can be used to control and manage the actions of the interference source identification device 600.
  • the processing module 604 is used to perform step S120 in FIG. 4 or step S1201 in FIG. 5, step S1202, and/or other content for performing the technology described in the method embodiments of the present application.
  • the acquisition module 602 is used to communicate with other modules or devices.
  • the acquisition module 602 is used to perform step S110 in FIG. 4 and/or to perform other contents of the technology described in this application.
  • the interference source identification device 600 may further include a storage module 606.
  • the storage module 606 is used to store the program code and data of the interference source identification device 600, for example, to store the program code for interference source identification.
  • the processing module 604 is used to call the program code in the storage module 606 to implement the implementation steps in the embodiment described in FIG. 4 or FIG. 5 with the interference source identification device as the main body of execution, and/or used to execute the Other content steps of the described technology.
  • the processing module 604 may be a processor or a controller, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), or an application-specific integrated circuit (application-specific) integrated circuit (ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of the present application.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of DSP and microprocessor, and so on.
  • the acquisition module 602 may be a communication interface, a transceiver, a transceiver circuit, etc., where the communication interface is a collective term and may include one or more interfaces, such as an interface between the communication module and the processing module, an interference source identification device, and user equipment Interface etc.
  • the storage module 606 may be a memory, or other services or modules for providing storage functions.
  • FIG. 7 is an interference source identification device 700 provided by an embodiment of the present application.
  • the interference source identification device 700 includes one or more processors 701, a communication interface 702, and a memory 703.
  • the interface 702 and the memory 703 may be connected to each other through a bus 704. among them:
  • the processor 701 may be composed of one or more general-purpose processors, such as a CPU.
  • the processor may be used to run relevant program code to realize the functions of the above processing module.
  • the processor 701 may be used to run relevant program code in the memory 703 to perform step S120 in FIG. 4 or step S1201 in FIG. 5, step S1202, and/or for performing the techniques described in the method embodiments of the present application Of other content.
  • the communication interface 702 may be a wired interface (such as an Ethernet interface) or a wireless interface (such as a cellular network interface or use a wireless local area network interface) for communicating with other modules or devices.
  • a wired interface such as an Ethernet interface
  • a wireless interface such as a cellular network interface or use a wireless local area network interface
  • the communication interface 702 in the embodiment of the present application may be specifically used to receive the first parameter and the like.
  • the memory 703 may include volatile memory (volatile memory), such as random access memory (random access memory, RAM); the memory may also include non-volatile memory (non-volatile memory), such as read-only memory (read-only) memory (ROM), flash memory (flash memory), hard disk (hard disk drive), or solid-state drive (SSD); memory 703 may also include a combination of the aforementioned types of memory.
  • volatile memory volatile memory
  • non-volatile memory such as read-only memory (read-only) memory (ROM), flash memory (flash memory), hard disk (hard disk drive), or solid-state drive (SSD); memory 703 may also include a combination of the aforementioned types of memory.
  • the memory can be used to store a set of program codes and data, so that the processor can call the program codes and data stored in the memory to implement the functions of the communication module and/or the processing module involved in the embodiments of the present application.
  • the embodiments of the present application do not do limited.
  • FIG. 4 or FIG. 5 is only one possible implementation manner of the embodiments of the present application.
  • the interference source identification device may further include more or fewer components, which is not limited herein.
  • An embodiment of the present invention also provides a computer non-transitory storage medium, where the computer non-transitory storage medium stores instructions, and when it runs on a processor, execute steps S110, S120 in FIG. 4, or FIG. 5 Step S1201, step S1202, and/or other steps performed by the fault analysis device described in the method embodiment of the present application.
  • the steps of the method or algorithm described in conjunction with the disclosure of the embodiments of the present invention may be implemented by hardware, or by a processor executing software instructions.
  • Software instructions can be composed of corresponding software modules, which can be stored in RAM, flash memory, ROM, erasable programmable read only memory (erasable programmable ROM, EPROM), electrically erasable programmable read only memory (electrically EPROM, EEPROM), registers, hard disk, removable hard disk, CD-ROM or any other form of storage medium well known in the art.
  • An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and can write information to the storage medium.
  • the storage medium may also be a component of the processor.
  • the processor and the storage medium may be located in the ASIC.
  • the ASIC may be located in the computing device.
  • the processor and the storage medium may also exist as discrete components in the computing device.
  • a person of ordinary skill in the art may understand that all or part of the process in the method of the above embodiments may be completed by instructing relevant hardware through a computer program, and the program may be stored in a computer-readable storage medium. When executed, it may include the processes of the foregoing method embodiments.
  • the foregoing storage media include various media that can store program codes, such as ROM, RAM, magnetic disks, or optical disks.

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Abstract

本申请实施例公开了一种干扰源识别方法，包括：获取第一参数，第一参数包括第一接入点在预设时间段的同频干扰率，第二接入点在预设时间段的接收信道利用率和发送信道利用率，以及第二接入点在预设时间段接收第一站点发送的数据的接收帧率；在第一参数满足预设条件的情况下，确定第一站点向第二接入点发送的数据对第一接入点构成同频干扰。通过在预设时间段获取第一接入点的同频干扰率、第二接入点的接收信道利用率、发送信道利用率以及第二接入点接收第一站点发送的数据的接收帧率，可以确定第二接入点覆盖范围内对第一接入点造成同频干扰的站点，从而可以对该站点进行处理，降低或者消除对第一接入点的同频干扰。

Description

干扰源识别方法、相关设备及计算机存储介质
本申请要求于2018年11月28日提交中国国家知识产权局、申请号为CN 201811440927.1、发明名称为“干扰源识别方法、相关设备及计算机存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，尤其涉及干扰源识别方法、相关设备及计算机存储介质。
背景技术
同频干扰是指干扰信号的载频与有用信号的载频相同，干扰信号对接收有用信号的接收机造成的干扰。在移动通信***中，由于频率资源有限，为了提高频率利用率，增加***容量，通常采用频率复用技术，从而会在一定的区域内，存在多个使用同一频率的接入点(access point，AP)，例如会议大厅、学生宿舍以及图书馆等场所，通常会部署多个使用同一频率的AP以满足用户的使用需求，站点(station，STA)在与所连接的目标AP进行通信时，可能会对与目标AP相邻的其他AP造成同频干扰，在其他AP出现同频干扰问题时，需要确定对AP构成同频干扰的干扰站点，进而才能对所述干扰站点进行处理，降低或者消除同频干扰。
发明内容
本申请实施例公开了干扰源识别方法、相关设备及计算机存储介质，能够识别出对AP造成同频干扰的干扰源。
第一方面，本申请实施例公开了一种干扰源识别方法，包括：
获取第一参数，所述第一参数包括第一接入点在预设时间段的同频干扰率、第二接入点在所述预设时间段的接收信道利用率、所述第二接入点在所述预设时间段的发送信道利用率，以及所述第二接入点在预设时间段接收第一站点发送的数据的接收帧率；
在所述第一参数满足第一预设条件的情况下，确定所述第一站点向所述第二接入点发送的数据对所述第一接入点构成同频干扰。
结合第一方面，在第一方面的第一种可能的实施方式中，所述预设时间段包括一个或多个采样周期；
所述同频干扰率为所述第一接入点在所述采样周期接收干扰数据的时间与所述采样周期的比值；
所述接收信道利用率为所述第二接入点在所述采样周期接收有用数据的时间与所述 采样周期的比值；
所述发送信道利用率为所述第二接入点在所述采样周期发送数据的时间与所述采样周期的比值；
所述接收帧率为所述第二接入点在所述采样周期接收所述第一站点发送的数据的帧率。
结合第一方面或第一方面的第一种可能的实施方式，在第一方面的第二种可能的实施方式中，在所述同频干扰率和所述接收信道利用率相关、所述同频干扰率和所述发送信道利用率不相关、所述接收帧率和所述接收信道利用率相关、所述接收帧率的接收帧率均值大于接收帧率阈值的情况下，确定所述第一站点向所述第二接入点发送的数据对所述第一接入点构成同频干扰，其中，所述接收帧率均值为所述一个或者多个采样周期采集到的接收帧率的平均值。
结合第一方面或第一方面的第一种或第二种可能的实施方式，在第一方面的第三种可能的实施方式中，
在所述同频干扰率和所述接收信道利用率的第一相关系数大于第一相关阈值的情况下，确定所述同频干扰率和所述接收信道利用率相关；其中，所述第一相关系数包括皮尔森相关系数、斯皮尔曼相关系数或肯德尔相关系数中的任意一种；
在所述同频干扰率和所述发送信道利用率的第二相关系数小于第二相关阈值的情况下，确定所述同频干扰率和所述发送信道利用率不相关；其中，所述第二相关系数包括皮尔森相关系数、斯皮尔曼相关系数或肯德尔相关系数中的任意一种；
在所述接收帧率和所述接收信道利用率的第三相关系数大于第三相关阈值的情况下，确定所述接收帧率和所述接收信道利用率相关；其中，所述第三相关系数包括皮尔森相关系数、斯皮尔曼相关系数或肯德尔相关系数中的任意一种。
结合第一方面或第一方面的第一种至第三种中的任何一种可能的实施方式，在第一方面的第四种可能的实施方式中，
在所述同频干扰率和所述接收信道利用率的第四相关系数小于第四相关阈值的情况下，确定所述同频干扰率和所述接收信道利用率相关；
在所述同频干扰率和所述发送信道利用率的第五相关系数大于第五相关阈值的情况下，确定所述同频干扰率和发送信道利用率不相关；
在所述接收帧率和所述接收信道利用率的第六相关系数小于第六相关阈值的情况下，确定所述接收帧率和所述接收信道利用率相关；
其中，所述第四相关系数、所述第五相关系数以及所述第六相关系数为时间翘曲距离。
结合第一方面或第一方面的第一种至第四种中的任何一种可能的实施方式，在第一方面的第五种可能的实施方式中，
确定同频干扰率均值、同频干扰率峰值或同频干扰率占比中的任意一个或者多个组成的第二参数，所述同频干扰率均值为所述预设时间段采集的多个同频干扰率的平均值；所述同频干扰率峰值为所述多个同频干扰率中的最大值；所述同频干扰率占比为所述多个同频干扰率中，大于所述同频干扰率均值的同频干扰率在所述多个同频干扰率中的比例；
在所述第二参数中每个参数满足各自的第二预设条件，且所述第一参数满足所述第一预设条件的情况下，确定所述第一站点向所述第二接入点发送的数据对所述第一接入点构成同频干扰，其中，
所述同频干扰率均值满足的预设条件包括：所述同频干扰率均值大于同频干扰率均值阈值；
所述同频干扰率峰值满足的预设条件包括：所述同频干扰率峰值大于同频干扰率峰值阈值；
所述同频干扰率占比满足的预设条件包括：所述同频干扰率占比大于同频干扰率占比阈值。
结合第一方面或第一方面的第一种至第五种中的任何一种可能的实施方式，在第一方面的第六种可能的实施方式中，所述获取第一参数包括：获取采集器采集的第一参数。
通过实施本申请实施例中的干扰源识别方法，能够确定所述第二接入点覆盖范围内的站点发送的数据是否会对第一接入点造成同频干扰，在所述第二接入点覆盖范围内的站点发送的数据会对第一接入点造成同频干扰的情况下，可以进一步确定所述第二接入点覆盖范围内对所述第一接入点造成同频干扰的干扰站点，从而可以对该站点进行处理，降低或者消除该站点对所述第一接入点的同频干扰。
第二方面，本申请实施例提供一种干扰源识别装置，所述装置包括：
获取模块，用于获取第一参数，所述第一参数包括第一接入点在预设时间段的同频干扰率、第二接入点在所述预设时间段的接收信道利用率、所述第二接入点在所述预设时间段的发送信道利用率，以及所述第二接入点在预设时间段接收第一站点发送的数据的接收帧率；
处理模块，用于在所述第一参数满足预设条件的情况下，确定所述第一站点向所述第二接入点发送的数据对所述第一接入点构成同频干扰。
结合第二方面，在第二方面的第一种可能的实施方式中，，所述预设时间段包括一个或多个采样周期；
所述同频干扰率为所述第一接入点在所述采样周期接收干扰数据的时间与所述采样周期的比值；
所述接收信道利用率为所述第二接入点在所述采样周期接收有用数据的时间与所述采样周期的比值；
所述发送信道利用率为所述第二接入点在所述采样周期发送数据的时间与所述采样周期的比值；
所述接收帧率为所述第二接入点在所述采样周期接收所述第一站点发送的数据的帧率。
结合第二方面或第二方面的第一种可能的实施方式，在第二方面的第二种可能的实施方式中，所述处理模块具体用于：
在所述同频干扰率和所述接收信道利用率相关、所述同频干扰率和所述发送信道利用率不相关、所述接收帧率和所述接收信道利用率相关、所述接收帧率的接收帧率均值大于接收帧率阈值的情况下，确定所述第一站点向所述第二接入点发送的数据对所述第一接入点构成同频干扰，其中，所述接收帧率均值为所述一个或者多个采样周期采集到的接收帧率的平均值。
结合第二方面或第二方面的第一种或第二种可能的实施方式，在第二方面的第三种可能的实施方式中，所述处理模块具体用于：
在所述同频干扰率和所述接收信道利用率的第一相关系数大于第一相关阈值的情况 下，确定所述同频干扰率和所述接收信道利用率相关；其中，所述第一相关系数为皮尔森相关系数、斯皮尔曼相关系数或肯德尔相关系数中任意一种；
在所述同频干扰率和所述发送信道利用率的第二相关系数小于第二相关阈值的情况下，确定所述同频干扰率和所述发送信道利用率不相关；其中，所述第二相关系数为皮尔森相关系数、斯皮尔曼相关系数或肯德尔相关系数中任意一种；
在所述接收帧率和所述接收信道利用率的第三相关系数大于第三相关阈值的情况下，确定所述接收帧率和所述接收信道利用率相关；其中，所述第三相关系数为皮尔森相关系数、斯皮尔曼相关系数或肯德尔相关系数中任意一种。
结合第二方面或第二方面的第一种至第三种可能的实施方式，在第二方面的第四种可能的实施方式中，所述处理模块具体用于：
在所述同频干扰率和所述接收信道利用率的第四相关系数小于第四相关阈值的情况下，确定所述同频干扰率和所述接收信道利用率相关；
在所述同频干扰率和所述发送信道利用率的第五相关系数大于第五相关阈值的情况下，确定所述同频干扰率和发送信道利用率不相关；
在所述接收帧率和所述接收信道利用率的第六相关系数小于第六相关阈值的情况下，确定所述接收帧率和所述接收信道利用率相关；
其中，所述第四相关系数、所述第五相关系数以及所述第六相关系数为时间翘曲距离。
结合第二方面或第二方面的第一种至第四种可能的实施方式，在第二方面的第五种可能的实施方式中，所述处理模块还用于：
确定同频干扰率均值、同频干扰率峰值或同频干扰率占比中的任意一个或者多个组成的第二参数，所述同频干扰率均值为所述多个采样周期采集的多个同频干扰率的平均值；所述同频干扰率峰值为所述多个同频干扰率中的最大值；所述同频干扰率占比为所述多个同频干扰率中，大于所述同频干扰率均值的同频干扰率在所述多个同频干扰率中的比例；
在所述第二参数中每个参数满足各自的第二预设条件，且所述第一参数满足所述第一预设条件的情况下，确定所述第一站点向所述第二接入点发送的数据对所述第一接入点构成同频干扰，其中，
所述同频干扰率均值满足的预设条件包括：所述同频干扰率均值大于同频干扰率均值阈值；
所述同频干扰率峰值满足的预设条件包括：所述同频干扰率峰值大于同频干扰率峰值阈值；
所述同频干扰率占比满足的预设条件包括：所述同频干扰率占比大于同频干扰率占比阈值。
结合第二方面或第二方面的第一种至第五种可能的实施方式，在第二方面的第六种可能的实施方式中，所述获取模块具体用于获取采集器采集的所述第一参数。
第三方面，本申请实施例提供一种网络设备，包括处理器、通信接口以及存储器；所述存储器用于存储指令，所述处理器用于执行所述指令，所述通信接口用于接收或者发送数据；其中，所述处理器执行所述指令时执行如上第一方面或者第一方面的任意可能的实施方式中所描述的方法。
第四方面，本申请提供一种非瞬态计算机存储介质，所述计算机非瞬态介质存储有计算机程序，所述计算机程序被处理器执行时实现如上第一方面或者第一方面的任意可能的 实施方式中所描述的方法。
附图说明
为了更清楚地说明本发明实施例技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的一种接入点互为隐藏节点的示意图；
图2是本申请实施例提供的一种站点互为隐藏节点的示意图；
图3是本申请实施例提供的一种应用干扰源识别方法的场景示意图；
图4是本申请实施例提供的一种干扰源识别方法的流程示意图；
图5是本申请实施例提供的另一种干扰源识别方法的流程示意图；
图6是本申请实施例提供的一种干扰源识别装置的结构示意图；
图7是本申请实施例提供的一种干扰源识别设备的结构示意图。
具体实施方式
下面结合附图，首先对涉及到同频干扰的通信场景进行介绍。
场景一：如图1所示，图1中，第一接入点AP1与第二接入点AP2使用相同的信道，由于距离或者其他因素，AP1与AP2之间不能直接通信，则可以将AP1称为AP2的隐藏节点，将AP2称为AP1的隐藏节点，即AP1与AP2之间互为隐藏节点。站点(station，STA)1位于AP1和AP2的重叠覆盖区域内，且AP1与AP2位于STA1的信号覆盖范围内，若STA1与AP2进行通信，在STA1向AP2发送信号时，STA1发送的信号同样会被AP1接收到，从而对AP1产生同频干扰。
场景二：如图2所示，图2中，STA2以及STA3均可以直接与第三接入点AP3进行数据传输，但是由于距离或其他因素，STA2与STA3之间不能直接通信，即STA2与STA3互为隐藏节点。若STA2与STA3同时向AP发送信号，由于AP不能同时处理两个信号，会导致AP无法对STA2与STA3发送的信号进行正确的解析，进而导致数据传输失败。
将上述图1中的场景称为AP互为隐藏节点场景，将上述图2中的场景称为STA互为隐藏节点场景。针对上述图2中描述的场景，可以采用请求发送/允许发送(request to send/clear to send，RTS/CTS)方案解决STA互为隐藏节点的问题，具体的，继续以图2为例，在STA2需要向AP3发送数据时，STA2先向AP3发送一个RTS帧，RTS帧用于向AP3预约信道使用权，AP3在接收到RTS帧之后，向AP3覆盖区域内的STA发送一个答复所述RTS帧的CTS帧，STA2在接收到CTS帧之后，即可向AP3发送数据，而STA3等其他STA接收到该CTS帧之后则保持沉默，从而避免两个或者两个以上的STA同时向AP发送数据。
但是，上述AP互为隐藏节点的场景中，若同样采用RTS/CTS方案，当STA1需要与AP2进行通信时，STA1向AP2发送RTS帧，由于STA只能和一个AP进行通信，AP1会因为STA1发送的RTS帧的目的地址不匹配，将该RTS帧丢弃，从而AP1不会发送针对 该RTS帧的CTS帧使AP1覆盖区域内的其他STA保持沉默，则AP1会同时接收到STA1发送的数据以及AP1覆盖区域内其他STA发送的数据，因此STA1向AP2发送的数据会对AP1造成同频干扰，RTS/CTS方案并不能解决AP互为隐藏节点场景中的同频干扰问题。在解决该场景中同频干扰问题时，需要首先识别出AP互为隐藏节点的场景，然后识别出干扰源STA，再对干扰源进行处理，例如强制干扰源STA切换频段或者对所述STA进行引导以使该STA接入不同信道的接入点等，消除同频干扰，提升网络性能。
为了解决识别上述AP互为隐藏节点的场景，然后识别干扰源STA的问题，本申请实施例提供了一种干扰源识别方法，本申请实施例中，以图3所示的网络对本申请提供的干扰源识别方法进行介绍，图3中，所述STA可以是手机、平板电脑(table personal computer)、个人数字助理(personal digital assistant，PDA)、移动上网装置(mobile internet device，MID)或可穿戴式设备(wearable device)等终端侧设备，本申请不限定所述STA的具体形式或类型，AP可以是无线路由器等可以组建无线局域网的设备，本申请实施例不做具体限定。基于图3所示的网络，请参见图4，图4是本申请实施例提供的一种干扰源识别方法的流程示意图，所述方法包括：
S110、获取第一参数。
本申请实施例中，所述第一参数包括所述第一接入点AP1在预设时间段的同频干扰率CCI AP1、所述第二接入点AP2在所述预设时间段的接收信道利用率RX AP2、所述AP2在所述预设时间段的发送信道利用率TX AP2以及所述AP2在所述预设时间段接收第一站点STA1发送的数据的接收帧率V STA，其中，所述预设时间段包括一个或者多个采样周期，所述同频干扰率为所述AP1在一个所述采样周期内接收干扰数据的时间与所述采样周期的比值；所述接收信道利用率为所述AP2在一个所述采样周期内，接收有用数据的时间与所述采样周期的比值；所述发送信道利用率为所述AP2在一个所述采样周期内，发送数据的时间与所述采样周期的比值；所述接收帧率为所述AP2在一个采样周期内接收所述STA1发送的数据的接收速率。
举例来讲，若一个采样周期为10秒，预设时间段为50秒，在一个采样周期内，AP1接收有用数据占用的时间为4秒，发送数据占用的时间为2秒，接收干扰数据占用的时间为3秒，则所述AP1的同频干扰率为30％。所述AP2接收有用数据占用的时间为5秒，发送数据占用的时间为2秒，接收干扰数据占用的时间为1秒，则在这个采样周期内，AP2的接收信道利用率为50％，发送信道利用率为20％，同频干扰率为10％。若在该采样周期内，AP2接收到STA1以及STA2发送的数据，其中接收所述STA1发送的数据所占用的时间为2秒，共接收到STA1发送的2400帧数据，则在该采样周期内，所述AP2对应STA1的接收帧率为1200，也表示所述STA1在该采样周期内的发送帧率为1200。采集器每隔10秒采集一次所述AP1的同频干扰率、采集一次所述AP2的接收信道利用率、所述AP2的发送信道利用率以及所述AP2接收第一站点STA1发送的数据的接收帧率，在预设时间段内，采集器采集五次上述数据组成所述第一参数，干扰源识别设备每隔50秒获取一次采集器采集到的所述第一参数。
本申请实施例中，所述采集器可以位于AP中，每个AP中集成一个采集器；所述采集器也可以为单独的一台设备，与AP以及所述干扰源识别设备通过有线或者无线的方式连接，所述采集器还可以集成于所述干扰源识别设备中，本申请实施例不做具体限制。
S120、在所述第一参数满足预设条件的情况下，确定所述第一站点向所述第二接入点发送的数据对所述第一接入点构成同频干扰。
本申请实施例中，所述预设条件包括：
预设条件一：所述AP1在预设时间段的同频干扰率CCI AP1与所述AP2在所述预设时间段的接收信道利用率RX AP2相关；
预设条件二：所述AP1在预设时间段的同频干扰率CCI AP1与所述AP2在所述预设时间段的发送信道利用率TX AP2不相关；
预设条件三：所述AP2在所述预设时间段接收STA1发送的数据的接收帧率V STA与所述第二接入点AP2在所述预设时间段的接收信道利用率RX AP2相关；
预设条件四：所述AP2在所述预设时间段接收STA1发送的数据的接收帧率V STA的接收帧率均值V mean大于接收帧率阈值TH sta，接收帧率均值V mean为在所述预设时间段的多个采样周期采集的多个接收帧率的平均值。
在所述第一参数满足上述四个条件的情况下，确定所述第一站点向所述第二接入点发送的数据对所述第一接入点构成同频干扰。
本申请实施例中，确定两组数据之间是否相关可以通过计算两组数据之间的相关系数，根据两组数据之间的相关系数是否满足阈值要求确定这两组数据之间是否相关，其中，用来确定两组数据之间是否相关的相关系数可以是皮尔森pearson相关系数、斯皮尔曼spearman相关系数、肯德尔kendall相关系数或时间翘曲距离四种系数中的任意一种，本申请实施例不做具体限定。其中，所述时间翘曲距离通过动态时间规整(dynamic time warping，DTW)算法计算得到。
所述干扰源识别设备在获取所述第一参数之后，计算所述AP1在预设时间段的同频干扰率CCI AP1与所述AP2在预设时间段的接收信道利用率RX AP2之间的相关系数，以确定所述同频干扰率CCI AP1与所述接收信道利用率RX AP2之间是否相关；计算所述AP1在预设时间段的同频干扰率CCI AP1与所述AP2在所述预设时间段的发送信道利用率TX AP2之间的相关系数，以确定所述同频干扰率CCI AP1与所述发送信道利用率TX AP2之间是否不相关；计算所述AP2接收所述STA1发送的数据的接收帧率V STA与所述AP2在预设时间段的接收信道利用率RX AP2之间的相关系数，以确定所述接收帧率V STA与所述接收信道利用率RX AP2之间是否相关。
以相关系数为pearson相关系数，确定所述同频干扰率CCI AP1与所述信道利用率RX AP2之间是否相关为例，在干扰源识别设备获取所述第一参数之后，计算所述同频干扰率CCI AP1与接收信道利用率RX AP2两组数据之间的pearson相关系数，若这两组数据之间的pearson相关系数大于第一阈值，则确定所述同频干扰率CCI AP1与接收信道利用率RX AP2之间相关，若这两组数据之间的pearson相关系数小于或者等于第一阈值，则确定所述同频干扰率CCI AP1与接收信道利用率RX AP2之间不相关。
本申请实施例中，由于pearson相关系数、spearman相关系数以及kendall相关系数三种系数都是绝对值大于一个预设阈值时，表示两组数据之间相关，而时间翘曲距离则是绝对值小于一个预设阈值时，表示两组数据之间相关，因此，在根据两组数据之间的相关系数确定两组数据之间是否相关时，选择计算的相关系数类型不同，确定两组数据之间是否 相关所要满足的要求也不同，具体的，满足上述预设条件一、预设条件二以及预设条件三的要求包括：
在所述同频干扰率和所述接收信道利用率的第一相关系数的绝对值大于第一相关阈值的情况下，确定所述同频干扰率和所述接收信道利用率相关；其中，所述第一相关系数为皮尔森相关系数、斯皮尔曼相关系数或肯德尔相关系数中任意一种；或者，在所述同频干扰率和所述接收信道利用率的第四相关系数小于第四相关阈值的情况下，确定所述同频干扰率和所述接收信道利用率相关，所述第四相关系数为时间翘曲距离；
在所述同频干扰率和所述发送信道利用率的第二相关系数的绝对值小于第二相关阈值的情况下，确定所述同频干扰率和所述发送信道利用率不相关；其中，所述第二相关系数为皮尔森相关系数、斯皮尔曼相关系数或肯德尔相关系数中任意一种；或者，在所述同频干扰率和所述发送信道利用率的第五相关系数大于第五相关阈值的情况下，确定所述同频干扰率和发送信道利用率不相关，所述第五相关系数为时间翘曲距离；
在所述接收帧率和所述接收信道利用率的第三相关系数的绝对值大于第三相关阈值的情况下，确定所述接收帧率和所述接收信道利用率相关；其中，所述第三相关系数为皮尔森相关系数、斯皮尔曼相关系数或肯德尔相关系数中任意一种；或者，在所述接收帧率和所述接收信道利用率的第六相关系数小于第六相关阈值的情况下，确定所述接收帧率和所述接收信道利用率相关，所述第六相关系数为时间翘曲距离；
其中，所述第一相关阈值、所述第二相关阈值以及所述第三相关阈值均为小于1的正实数，所述第二相关阈值小于或者等于所述第一相关阈值，所述第二相关阈值小于或者等于所述第三相关阈值。所述第四相关阈值小于或者等于所述第五相关阈值，所述第六相关阈值小于或者等于所述第五相关阈值。
本申请实施例中，由于在计算两组数据的pearson相关系数、spearman相关系数或者kendall相关系数三种系数中的任意一种时，要求该两组数据中数据的个数必须一样，而所述DTW算法在计算两组数据之间的时间翘曲距离时，不要求两组数据中数据个数完全一致，因此，所述干扰源识别设备在获取所述第一参数之后，首先获取参与计算的两组数据中每组数据的数据个数，若该两组数据中数据个数相同，则所述相关系数可以为皮尔森pearson相关系数、斯皮尔曼spearman相关系数、肯德尔kendall相关系数或时间翘曲距离四种系数类型中的任意一种；若该两组数据中数据的个数不同，则所述相关系数为时间翘曲距离。
举例来讲，如果所述干扰源识别设备确定所述同频干扰源CCI AP1以及接收信道利用率RX AP2中包括的数据个数相同，则可以计算所述同频干扰源CCI AP1与接收信道利用率RX AP2之间的如下任意一个相关系数：pearson相关系数、spearman相关系数、kendall相关系数或时间翘曲距离，进而确定所述同频干扰源CCI AP1与接收信道利用率RX AP2之间是否相关。如果所述干扰源识别设备确定所述同频干扰源CCI AP1以及接收信道利用率RX AP2中包括的数据个数不一样，则只能计算所述同频干扰源CCI AP1与接收信道利用率RX AP2之间的时间翘曲距离，根据时间翘曲距离确定所述同频干扰源CCI AP1与接收信道利用率RX AP2之间是否相关。
可以理解，由于所述DTW算法在计算两组数据的时间翘曲距离时，不要求两组数据中数据个数完全一致，为了避免所述干扰源识别设备每次都需要判断参与计算相关系数的 两组数据的个数是否一样，减少所述干扰源识别设备的计算量，提高计算效率，可以将相关系数都设置为时间翘曲距离，本申请实施例不做具体限定。
在一种可能的实施方式中，根据上述对图1场景的描述，所述STA1对所述AP1构成同频干扰时，所述AP2是所述AP1的隐藏节点，且所述STA1在向所述AP2发送数据，即在确定所述STA1向所述AP2发送的数据对所述AP1构成同频干扰时，可以先确定所述AP2是所述AP1的隐藏节点，再确定所述STA1向所述AP2发送的数据对所述AP1构成同频干扰，则如图5所示，所述步骤S120可以包括以下步骤：
S1201、在所述同频干扰率与所述接收信道利用率相关且所述同频干扰率与所述发送信道利用率不相关的情况下，确定所述接收帧率均值以及所述接收帧率与所述接收信道利用率相关。
所述干扰源识别设备在获取所述第一参数之后，先计算所述同频干扰率与所述接收信道利用率之间的相关系数以及所述同频干扰率与所述发送信道利用率之间的相关系数。若所述同频干扰率和所述接收信道利用率的第一相关系数的绝对值大于第一相关阈值，或者，若所述同频干扰率和所述接收信道利用率的第四相关系数的绝对值小于第四相关阈值，则确定所述同频干扰率和所述接收信道利用率相关，即所述AP2接收的数据会对所述AP1产生同频干扰。若所述同频干扰率和所述发送信道利用率的第二相关系数的绝对值小于第二相关阈值，或者，所述同频干扰率和所述发送信道利用率的第五相关系数大于第五相关阈值，则确定所述同频干扰率和所述发送信道利用率不相关，即所述AP2发送的数据对所述AP1没有产生干扰。因为AP2发送的数据对所述AP1没有产生同频干扰，表明所述AP2与所述AP1之间不能直接进行通信，AP2接收的数据会对所述AP1产生同频干扰，表明所述AP2覆盖区域范围内与所述AP2进行通信的STA发送的数据会对所述AP1产生同频干扰，即所述AP2是所述AP1的隐藏节点。
在确定所述AP2是所述AP1的隐藏节点后，计算所述预设时间段内多个采集周期采集的接收帧率对应的接收帧率均值，以及所述接收帧率与所述接收信道利用率之间的相关系数。在所述接收帧率和所述接收信道利用率的第三相关系数的绝对值大于第三相关阈值，或者，所述接收帧率和所述接收信道利用率的第六相关系数小于第六相关阈值的情况下，确定所述接收帧率与所述接收信道利用率相关；在所述接收帧率和所述接收信道利用率的第三相关系数的绝对值小于或者等于第三相关阈值，或者，所述接收帧率和所述接收信道利用率的第六相关系数大于或者等于第六相关阈值的情况下，确定所述接收帧率与所述接收信道利用率不相关。其中，所述接收帧率均值可以是所述多个接收帧率的算数平均值、几何平均值或加权平均值中的任意一种，本申请实施例不做具体限制。
S1202、在所述接收帧率均值大于接收帧率阈值且所述接收帧率与所述接收信道利用率相关的情况下，确定所述STA1向所述AP2发送的数据对所述AP1构成同频干扰。
在确定所述接收帧率平均值V mean以及所述接收帧率与所述接收信道利用率是否相关之后，若所述V mean大于接收帧率阈值TH sta，且所述接收帧率与所述接收信道利用率相关，则说明所述AP2覆盖区域范围内的STA1向所述AP2发送的数据对所述AP1产生同频干扰，将所述STA1作为所述AP1的同频干扰源。
通过实施本申请实施例中的干扰源识别方法，能够通过获取所述第一接入点在预设时间段的同频干扰率，所述第二接入点在预设时间段的接收信道利用率、所述第二接入点在 预设时间段的发送信道利用率，以及所述第二接入点在预设时间段接收第一站点发送的数据的接收帧率，确定所述第二接入点覆盖范围内的站点发送的数据是否会对第一接入点造成同频干扰，在所述第二接入点覆盖范围内的站点发送的数据会对第一接入点造成同频干扰的情况下，可以进一步确定所述第二接入点覆盖范围内对所述第一接入点造成同频干扰的干扰站点，从而可以对该站点进行处理，降低或者消除该站点对所述第一接入点的同频干扰。
可选地，在获取预设时间段内多个采样周期采集的所述AP1的多个同频干扰率CCI AP1＝{C 1，C 2，……C i}之后，可以根据所述多个同频干扰率计算得到同频干扰率均值CCI mean、同频干扰率峰值CCI max或者同频干扰率占比CCI pro中的任意一个或者多个，其中，所述CCI mean为所述预设时间段内所述多个同频干扰率的平均值；所述CCI max为所述预设时间段内所述多个同频干扰率的最大值；所述CCI pro为所述预设时间段内所述多个同频干扰率中，大于所述同频干扰率均值的同频干扰率在所述多个同频干扰率中的比例；所述CCI mean可以是所述多个同频干扰率的算术平均值、几何平均值或者加权平均值中的任意一种，本申请实施例中以算术平均值为例进行说明，例如，所述CCI AP1＝{35％，28％，41％，25％，26％}，则所述CCI mean＝31％，所述CCI max＝41％，所述CCI pro＝40％。
在根据所述AP1的所述多个同频干扰率CCI AP1＝{C 1，C 2，……C i}得到所述CCI mean、CCI max或者所述CCI pro中的任意一个数据或者多个数据之后，将所述CCI mean、CCI max或者所述CCI pro中任意一个数据或者多个数据作为第二参数。上述步骤S1201中，除需满足所述同频干扰率与所述接收信道利用率相关且所述同频干扰率与所述发送信道利用率不相关之外，还需所述第二参数中的每个参数满足各自对应的预设条件，才能确定所述AP2是所述AP1的隐藏节点，进而确定所述接收帧率与所述接收信道利用率是否相关，其中：
所述CCI mean需要满足的预设条件为CCI mean大于同频干扰率均值阈值TH mean；
所述CCI max需要满足的预设条件为CCI max大于同频干扰率峰值阈值TH max；
所述CCI pro需要满足的预设条件为CCI pro大于同频干扰率占比阈值TH pro。
可选地，上述步骤S1201中，在所述同频干扰率与所述接收信道利用率相关且所述同频干扰率与所述发送信道利用率不相关的情况下，还可以根据所述预设时间段内多个采样周期采集到的多个接收帧率V STA＝{V 1，V 2，……V i}计算得到接收帧率峰值V max或所述接收帧率占比V pro中的任意一个或者多个，其中，所述接收帧率峰值V max为所述多个接收帧率中的最大值；所述接收帧率占比V pro为所述多个接收帧率中，大于所述接收帧率均值V mean的接收帧率在所述多个接收帧率中的比例。其中，所述V mean可以是所述多个同频干扰率的算术平均值、几何平均值或者加权平均值中的任意一种，本申请实施例中以算术平均值为例进行说明，例如，所述V STA＝{1200，1000，1100，1250，1050}，则所述V mean＝1120，所述V max＝1250，所述V pro＝40％。
在根据所述接收帧率V STA＝{V 1，V 2，……V i}得到所述V max或所述V pro中的任意一个数据或者多个数据之后，将所述V max或所述V pro中的任意一个数据或者多个数据作为第三参数，在上述步骤S1202，确定所述STA1向所述AP2发送的数据对所述AP1构成同频干扰时，除需满足所述接收帧率均值V mean大于所述接收帧率阈值TH sta以及所述接收帧率与所述接收信道利用率相关之外，还需要所述第三参数中的每个参数满足各自对应的预设条 件，其中，
所述V max需要满足的预设条件为所述V max大于接收帧率峰值阈值；
所述V pro需要满足的预设条件为所述V pro大于接收帧率占比阈值。
上述实施例中，是以AP2覆盖范围内的STA1为例，说明在确定所述AP2为所述AP1的隐藏节点之后，如何确定所述AP2覆盖范围内的STA1向所述AP2发送数据时对所述AP1构成同频干扰。根据相同的方法，所述干扰源识别设备可以获取所述AP2覆盖范围内除所述STA1之外的其他任意一个STA的发送帧率(即所述AP2接收该STA发送的数据的接收帧率)，确定所述AP2覆盖范围内任意一个STA向所述AP2发送的数据是否对所述AP1的构成同频干扰，从而找出所述AP2覆盖范围内所有对所述AP1产生同频干扰的STA。
可以理解，根据上述各实施例中的方法，所述干扰源识别设备还可以获取如图3中AP3等接入点的发送信道利用率与接收信道利用率等参数，确定所述AP3等其他接入点是否为所述AP1的隐藏节点，进而确定所述AP1的多个隐藏节点以及每个隐藏节点下对所述AP1造成同频干扰的STA。
根据上述实施例中介绍的干扰源识别方法，下面通过具体事例对所述干扰源识别的方法进行阐述。
继续以图3所述的网络进行说明，若所述采集周期为5秒，所述预设时间段为25秒，即所述干扰源识别设备每隔25秒从所述采集器获取一次所述第一参数。在某一时刻，所述干扰源识别设备获取到的所述AP1的多个同频干扰率CCI AP1＝{20％，22％，23％，21％，24％}，所述AP2的多个接收信道利用率RX AP2＝{40％，46％，47％，43％，49％}、所述AP2的多个发送信道利用率TX AP2＝{30％，36％，18％，31％，19％}以及所述AP2的多个接收帧率V STA＝{1000，1400，1450，1250，1500}。
获取上述第一参数之后，由于所述CCI AP1、RX AP2以及TX AP2中的数据个数都为5个，则相关系数可以为pearson相关系数、spearman相关系数、kendall相关系数或时间翘曲距离中的任意一种，本申请实施例中均以计算pearson相关系数为例进行说明，其中，所述第一相关阈值为0.7，所述第二相关阈值为0.3，所述第三相关阈值为0.7，所述接收帧率阈值TH sta＝1000。pearson相关系数的定义为：两个变量(X，Y)之间的皮尔森相关系数ρ(X,Y)为两个变量之间的协方差cov(X，Y)与两个连续变量的标准差乘积的比值，即
Figure PCTCN2019121122-appb-000001
其中，E(X)表示变量X的数学期望，E(Y)表示变量Y的数学期望，E(XY)表示XY的数学期望，σ X表示变量X的标准差，σ Y表示变量Y的标准差。
对应到本申请实施例中，所述同频干扰率与所述接收信道利用率之间的相关系数P1(CCI AP1，RX AP2)的计算公式为：
Figure PCTCN2019121122-appb-000002
Figure PCTCN2019121122-appb-000003
其中，E(CCI AP1)表示变量CCI AP1中五个同频干扰率的数学期望，E(RX AP2)表示变量RX AP2中五个接收通道利用率的数学期望，E(CCI AP1RX AP2)表示CCI AP1RX AP2的数学期望，σ CCIAP1表示变量CCI AP1的标准差，σ RXAP2表示变量RX AP2的标准差。
所述同频干扰率与所述发送信道利用率之间的相关系数P2(CCI AP1，TX AP2)的计算公式为：
Figure PCTCN2019121122-appb-000004
其中，E(TX AP2)表示变量TX AP2中五个接收通道利用率的数学期望，E(CCI AP1TX AP2)表示CCI AP1TX AP2的数学期望，σ TXAP2表示变量TX AP2的标准差。
所述接收帧率与所述发送信道利用率之间的相关系数P3(V STA，RX AP2)的计算公式为：
Figure PCTCN2019121122-appb-000005
其中，E(V STA)表示变量V STA中五个接收帧率的数学期望，E(V STA RX AP2)表示V STARX AP2的数学期望，σ VSTA表示变量V STA的标准差。
根据上述公式1至公式3，计算得到P1(CCI AP1，RX AP2)＝0.9841，P2(CCI AP1，TX AP2)＝0.2562，P3(V STA，RX AP2)＝0.9343，在预设时间段内所述接收帧率均值为1320。由于P1(CCI AP1，RX AP2)大于所述第一相关阈值为0.7，P2(CCI AP1，TX AP2)小于所述第二相关阈值0.3，P3(V STA，RX AP2)大于所述第三相关阈值为0.7，所述接收帧率均值大于所述接收帧率阈值，即所述同频干扰率和所述接收信道利用率相关、所述同频干扰率和所述发送信道利用率不相关、所述接收帧率和所述接收信道利用率相关、所述接收帧率的接收帧率均值大于接收帧率阈值，因此确定所述STA1向所述AP2发送的数据对所述AP1构成同频干扰。
结合上文图1-图5所述实施例中的相关描述，下面介绍本申请实施例适用的相关装置。请参见图6是本发明实施例提供的一种干扰源识别装置的结构示意图。该装置600包括获取模块602和处理模块604。其中，处理模块604可用于对干扰源识别装置600的动作进行控制和管理。例如，处理模块604用于执行图4中的步骤S120或图5中的步骤S1201、步骤S1202，和/或用于执行本申请方法实施例中所描述的技术的其他内容。获取模块602用于与其他模块或设备进行通信，例如，获取模块602用于执行图4中的步骤S110，和/或用于执行本申请中所描述的技术的其他内容。
可选地，该干扰源识别装置600还可包括存储模块606。该存储模块606用于存储干扰源识别装置600的程序代码和数据，例如存储用于干扰源识别的程序代码。处理模块604 用于调用该存储模块606中的程序代码以实现如上图4或图5所述实施例中的以干扰源识别装置为执行主体的实施步骤，和/或用于执行本申请中所描述的技术的其他内容步骤。
其中，处理模块604可以是处理器或控制器，例如可以是中央处理器(central processing unit，CPU)，通用处理器，数字信号处理器(digital signal processor，DSP)，专用集成电路(application-specific integrated circuit，ASIC)，现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。获取模块602可以是通信接口、收发器、收发电路等，其中，通信接口是统称，可以包括一个或多个接口，例如通信模块与处理模块之间的接口、干扰源识别装置与用户设备之间的接口等。存储模块606可以是存储器，或者其他用于提供存储功能的服务或模块。
请参见图7，图7是本申请实施例提供的一种干扰源识别设备700，所述干扰源识别设备700包括一个或多个处理器701、通信接口702和存储器703，处理器701、通信接口702和存储器703可通过总线704互相连接。其中：
处理器701可以由一个或者多个通用处理器构成，例如CPU。处理器可用于运行相关的程序代码实现上述处理模块的功能。具体的，处理器701可用于运行存储器703中的相关程序代码以执行图4中的步骤S120或图5中步骤S1201、步骤S1202，和/或用于执行本申请方法实施例中所描述的技术的其他内容。
通信接口702可以为有线接口(例如以太网接口)或无线接口(例如蜂窝网络接口或使用无线局域网接口)，用于与其他模块或设备进行通信。例如，本申请实施例中通信接口702具体可用于接收所述第一参数等。
存储器703可以包括易失性存储器(volatile memory)，例如随机存取存储器(random access memory，RAM)；存储器也可以包括非易失性存储器(non-volatile memory)，例如只读存储器(read-only memory，ROM)、快闪存储器(flash memory)、硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；存储器703还可以包括上述种类的存储器的组合。存储器可用于存储一组程序代码和数据，以便于处理器调用存储器中存储的程序代码和数据以实现本申请实施例中涉及的通信模块和/或处理模块的功能，本申请实施例并不做限定。
需要说明的，图4或图5仅仅是本申请实施例的一种可能的实现方式，实际应用中，干扰源识别设备还可以包括更多或更少的部件，这里不作限制。关于本申请实施例中未示出或未描述的内容，可参见前述方法实施例中的相关阐述，在此不再赘述。
本发明实施例还提供一种计算机非瞬态存储介质，所述计算机非瞬态存储介质中存储有指令，当其在处理器上运行时，执行图4中步骤S110、S120、或图5中步骤S1201、步骤S1202，和/或用于执行本申请方法实施例中所述故障分析设备所执行的其它步骤。
结合本发明实施例公开内容所描述的方法或者算法的步骤可以硬件的方式来实现，也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于RAM、闪存、ROM、可擦除可编程只读存储器(erasable programmable ROM，EPROM)、电可擦可编程只读存储器(electrically EPROM，EEPROM)、寄存器、 硬盘、移动硬盘、只读光盘(CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于计算设备中。当然，处理器和存储介质也可以作为分立组件存在于计算设备中。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。

Claims (16)

  1. 一种干扰源识别方法，其特征在于，包括：
    获取第一参数，所述第一参数包括第一接入点在预设时间段的同频干扰率、第二接入点在所述预设时间段的接收信道利用率、所述第二接入点在所述预设时间段的发送信道利用率，以及所述第二接入点在预设时间段接收第一站点发送的数据的接收帧率；
    在所述第一参数满足第一预设条件的情况下，确定所述第一站点向所述第二接入点发送的数据对所述第一接入点构成同频干扰。
  2. 根据权利要求1所述的方法，其特征在于，所述预设时间段包括一个或多个采样周期；
    所述同频干扰率为所述第一接入点在所述采样周期接收干扰数据的时间与所述采样周期的比值；
    所述接收信道利用率为所述第二接入点在所述采样周期接收有用数据的时间与所述采样周期的比值；
    所述发送信道利用率为所述第二接入点在所述采样周期发送数据的时间与所述采样周期的比值；
    所述接收帧率为所述第二接入点在所述采样周期接收所述第一站点发送的数据的帧率。
  3. 根据权利要求2所述的方法，其特征在于，
    在所述同频干扰率和所述接收信道利用率相关、所述同频干扰率和所述发送信道利用率不相关、所述接收帧率和所述接收信道利用率相关、所述接收帧率的接收帧率均值大于接收帧率阈值的情况下，确定所述第一站点向所述第二接入点发送的数据对所述第一接入点构成同频干扰，其中，所述接收帧率均值为所述一个或者多个采样周期采集到的接收帧率的平均值。
  4. 根据权利要求3所述的方法，其特征在于，
    在所述同频干扰率和所述接收信道利用率的第一相关系数的绝对值大于第一相关阈值的情况下，确定所述同频干扰率和所述接收信道利用率相关；其中，所述第一相关系数包括皮尔森相关系数、斯皮尔曼相关系数或肯德尔相关系数中的任意一种；
    在所述同频干扰率和所述发送信道利用率的第二相关系数的绝对值小于第二相关阈值的情况下，确定所述同频干扰率和所述发送信道利用率不相关；其中，所述第二相关系数包括皮尔森相关系数、斯皮尔曼相关系数或肯德尔相关系数中的任意一种；
    在所述接收帧率和所述接收信道利用率的第三相关系数的绝对值大于第三相关阈值的情况下，确定所述接收帧率和所述接收信道利用率相关；其中，所述第三相关系数包括皮尔森相关系数、斯皮尔曼相关系数或肯德尔相关系数中的任意一种。
  5. 根据权利要求3所述的方法，其特征在于，
    在所述同频干扰率和所述接收信道利用率的第四相关系数的绝对值小于第四相关阈 值的情况下，确定所述同频干扰率和所述接收信道利用率相关；
    在所述同频干扰率和所述发送信道利用率的第五相关系数的绝对值大于第五相关阈值的情况下，确定所述同频干扰率和发送信道利用率不相关；
    在所述接收帧率和所述接收信道利用率的第六相关系数的绝对值小于第六相关阈值的情况下，确定所述接收帧率和所述接收信道利用率相关；
    其中，所述第四相关系数、所述第五相关系数以及所述第六相关系数为时间翘曲距离。
  6. 根据权利要求1至5任一项所述的方法，其特征在于，
    确定同频干扰率均值、同频干扰率峰值或同频干扰率占比中的任意一个或者多个组成的第二参数，所述同频干扰率均值为所述预设时间段采集的多个同频干扰率的平均值；所述同频干扰率峰值为所述多个同频干扰率中的最大值；所述同频干扰率占比为所述多个同频干扰率中，大于所述同频干扰率均值的同频干扰率在所述多个同频干扰率中的比例；
    在所述第二参数中每个参数满足各自的第二预设条件，且所述第一参数满足所述第一预设条件的情况下，确定所述第一站点向所述第二接入点发送的数据对所述第一接入点构成同频干扰，其中，
    所述同频干扰率均值满足的第二预设条件包括：所述同频干扰率均值大于同频干扰率均值阈值；
    所述同频干扰率峰值满足的第二预设条件包括：所述同频干扰率峰值大于同频干扰率峰值阈值；
    所述同频干扰率占比满足的第二预设条件包括：所述同频干扰率占比大于同频干扰率占比阈值。
  7. 根据权利要求1至6任一所述的方法，其特征在于，所述获取第一参数包括：
    获取采集器采集的所述第一参数。
  8. 一种干扰源识别装置，其特征在于，所述装置包括：
    获取模块，用于获取第一参数，所述第一参数包括第一接入点在预设时间段的同频干扰率、第二接入点在所述预设时间段的接收信道利用率、所述第二接入点在所述预设时间段的发送信道利用率，以及所述第二接入点在预设时间段接收第一站点发送的数据的接收帧率；
    处理模块，用于在所述第一参数满足第一预设条件的情况下，确定所述第一站点向所述第二接入点发送的数据对所述第一接入点构成同频干扰。
  9. 根据权利要求8所述的装置，其特征在于，所述预设时间段包括一个或多个采样周期；
    所述同频干扰率为所述第一接入点在所述采样周期接收干扰数据的时间与所述采样周期的比值；
    所述接收信道利用率为所述第二接入点在所述采样周期接收有用数据的时间与所述采样周期的比值；
    所述发送信道利用率为所述第二接入点在所述采样周期发送数据的时间与所述采样 周期的比值；
    所述接收帧率为所述第二接入点在所述采样周期接收所述第一站点发送的数据的帧率。
  10. 根据权利要求9所述的装置，其特征在于，所述处理模块具体用于：
    在所述同频干扰率和所述接收信道利用率相关、所述同频干扰率和所述发送信道利用率不相关、所述接收帧率和所述接收信道利用率相关、所述接收帧率的接收帧率均值大于接收帧率阈值的情况下，确定所述第一站点向所述第二接入点发送的数据对所述第一接入点构成同频干扰，其中，所述接收帧率均值为所述一个或者多个采样周期采集到的接收帧率的平均值。
  11. 根据权利要求10所述的装置，其特征在于，所述处理模块具体用于：
    在所述同频干扰率和所述接收信道利用率的第一相关系数大于第一相关阈值的情况下，确定所述同频干扰率和所述接收信道利用率相关；其中，所述第一相关系数包括皮尔森相关系数、斯皮尔曼相关系数或肯德尔相关系数中的任意一种；
    在所述同频干扰率和所述发送信道利用率的第二相关系数小于第二相关阈值的情况下，确定所述同频干扰率和所述发送信道利用率不相关；其中，所述第二相关系数包括皮尔森相关系数、斯皮尔曼相关系数或肯德尔相关系数中的任意一种；
    在所述接收帧率和所述接收信道利用率的第三相关系数大于第三相关阈值的情况下，确定所述接收帧率和所述接收信道利用率相关；其中，所述第三相关系数包括皮尔森相关系数、斯皮尔曼相关系数或肯德尔相关系数中的任意一种。
  12. 根据权利要求10所述的装置，其特征在于，所述处理模块具体用于：
    在所述同频干扰率和所述接收信道利用率的第四相关系数小于第四相关阈值的情况下，确定所述同频干扰率和所述接收信道利用率相关；
    在所述同频干扰率和所述发送信道利用率的第五相关系数大于第五相关阈值的情况下，确定所述同频干扰率和发送信道利用率不相关；
    在所述接收帧率和所述接收信道利用率的第六相关系数小于第六相关阈值的情况下，确定所述接收帧率和所述接收信道利用率相关；
    其中，所述第四相关系数、所述第五相关系数以及所述第六相关系数为时间翘曲距离。
  13. 根据权利要求8至12任一项所述的装置，其特征在于，所述处理模块还用于：
    确定同频干扰率均值、同频干扰率峰值或同频干扰率占比中的任意一个或者多个组成的第二参数，所述同频干扰率均值为所述预设时间段采集的多个同频干扰率的平均值；所述同频干扰率峰值为所述多个同频干扰率中的最大值；所述同频干扰率占比为所述多个同频干扰率中，大于所述同频干扰率均值的同频干扰率在所述多个同频干扰率中的比例；
    在所述第二参数中每个参数满足各自的第二预设条件，且所述第一参数满足所述第一预设条件的情况下，确定所述第一站点向所述第二接入点发送的数据对所述第一接入点构成同频干扰，其中，
    所述同频干扰率均值满足的预设条件包括：所述同频干扰率均值大于同频干扰率均值 阈值；
    所述同频干扰率峰值满足的预设条件包括：所述同频干扰率峰值大于同频干扰率峰值阈值；
    所述同频干扰率占比满足的预设条件包括：所述同频干扰率占比大于同频干扰率占比阈值。
  14. 根据权利要求8至13任一项所述的装置，其特征在于，所述获取模块具体用于获取采集器采集的所述第一参数。
  15. 一种网络设备，其特征在于，包括处理器、通信接口以及存储器；所述存储器用于存储指令，所述处理器用于执行所述指令，所述通信接口用于接收或者发送数据；其中，所述处理器执行所述指令时执行如权利要求1-7任一项所述的方法。
  16. 一种非瞬态计算机存储介质，所述计算机非瞬态介质存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现如权利要求1-7任一项所述的方法。
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