WO2014067057A1 - 一种干扰收集和识别的方法、设备及系统 - Google Patents

一种干扰收集和识别的方法、设备及系统 Download PDF

Info

Publication number
WO2014067057A1
WO2014067057A1 PCT/CN2012/083718 CN2012083718W WO2014067057A1 WO 2014067057 A1 WO2014067057 A1 WO 2014067057A1 CN 2012083718 W CN2012083718 W CN 2012083718W WO 2014067057 A1 WO2014067057 A1 WO 2014067057A1
Authority
WO
WIPO (PCT)
Prior art keywords
access point
spectrum
scan
point devices
interference
Prior art date
Application number
PCT/CN2012/083718
Other languages
English (en)
French (fr)
Inventor
王云贵
彭敏
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201280021530.3A priority Critical patent/CN103947242B/zh
Priority to EP12887615.8A priority patent/EP2894894B1/en
Priority to PCT/CN2012/083718 priority patent/WO2014067057A1/zh
Publication of WO2014067057A1 publication Critical patent/WO2014067057A1/zh
Priority to US14/694,782 priority patent/US9686700B2/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/08Testing, supervising or monitoring using real traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/04Arrangements for maintaining operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/189Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method, device and system for interference collection and identification. Background technique
  • WLAN Wireless Local Area Network
  • interference When interference has an impact on the normal service of the WLAN environment, it is especially important to quickly and accurately obtain the location information of the interfering device to avoid and reduce the impact of interference as soon as possible.
  • it is necessary to acquire the interference source information at a plurality of detection points, and determine the position by a certain method. After multiple detection points detect the interference signal, how to confirm that the interference signals detected by multiple detection points are sent by the same interference source is a key problem to be solved in the wireless positioning technology.
  • each access point device receives, collects, and analyzes the interference signal, and the various characteristic information obtained after the signal analysis is called It is a pseudo-MAC (Media Access Control) address (Pseudo MAC, PMAC for short).
  • PMAC includes spectrum information and other information.
  • the spectrum information includes center frequency, bandwidth, pulse period, etc. Other information includes equipment. Identification, simulation features, etc., device identification is required to decode the data to obtain.
  • the access point device reports the PMAC data of the interference source to the wireless controller (Access Controller, AC for short), and the wireless controller compares the PMAC data by a predetermined rule, and divides the similar PMAC data into a cluster. With the comparison of multiple sets of PMAC data reported for a period of time, after clustering or splitting, finally, the PMAC data of each cluster can be identified as the same interference source.
  • the wireless controller Access Controller, AC for short
  • the above method for identifying the same interference source solves the problem of interference source identification to some extent, the above method also has some problems: On the one hand, PMAC generation is complicated, and not only spectrum analysis but also data decoding is required. The requirements for the detection equipment are high; on the other hand, due to the complexity of the wireless environment, the accuracy of the PMAC generated based on the spectrum information is difficult to guarantee. Summary of the invention
  • the present invention provides a method, device, and system for interference collection and identification, which are used to solve the problems of the interference recognition method for the interference source in the wireless network and the low recognition accuracy in the prior art.
  • the present invention provides a method for interference identification, which is applied to a wireless communication network including a wireless management device and at least two access point devices, where the interference identification method includes: requesting the at least two accesses The point device collects the spectrum information of the interference source, and receives the spectrum information of the collected interference source from the at least two access point devices, and determines that the spectrum information collected by the at least two access point devices belongs to the same device type.
  • Spectrum information of the interference source extracting the spectrum information of the interference source belonging to the same device type from the spectrum information collected by the at least two access point devices; and matching the separately extracted interference sources belonging to the same device type
  • the feature sequence of the spectrum information in the same time period, the matching value of the feature sequence in the same time period is calculated; determining whether the matching value is greater than a preset threshold, and if it is greater than the preset threshold, determining The separately extracted spectrum information of the interference source belonging to the same device type is from the same interference source, if not large
  • the preset threshold value determines that said each extracted spectral information belonging to the same device type of the source of interference from different interference sources.
  • the requesting, by the at least two access point devices to separately collect the spectrum information of the interference source specifically includes: connecting each of the at least two access point devices
  • the ingress device sends a channel switching request message including the designated channel, and notifies the at least two access point devices to switch to the designated channel; and receives, returned by each of the at least two access point devices Channel switching response message; determining one primary access point device from the at least two access point devices, and determining an access point of the at least two access point devices except the primary access point device
  • the device is a slave access point device, and sends a spectrum scan request message to the master access point device, so that the master access point device sends a spectrum scan request carrying information about the start scan time to each slave access point device. Message.
  • the access point device specifically includes: comparing interference values reported by each of the at least two access point devices, selecting one access point device having the largest interference value as the primary access point device, and the other being the slave device Access point device.
  • the method for the primary access point device to send the information about the start of the scan time to the slave access point device includes: sending the primary access point device to transmit by using a broadcast frame. Generating a spectrum scan request message for starting scan time information to each slave access point device; or
  • the spectrum scan request message of the time information is sent to each slave access point device.
  • the requesting at least two access point devices separately collect interference sources
  • the spectrum information specifically includes: transmitting, to each of the at least two access point devices, a channel switch request message including a designated channel, to notify the at least two access point devices to switch to the designated channel; Receiving a channel switch response message returned by each of the at least two access point devices; transmitting a spectrum scan request message to each of the at least two access point devices, the spectrum
  • the scan request message includes a start scan timestamp, so that each of the at least two access point devices initiates a spectrum scan according to the start scan timestamp, and collects spectrum information of the interference source.
  • the method further includes: determining whether the response time of the at least two access point devices is synchronized, if the at least If the response times of the two access point devices are synchronized, the start scan timestamps included in the spectrum scan request message sent to each of the at least two access point devices are the same, if the at least two The response time of the access point device is not synchronized, and the startup scan time stamp included in the spectrum scan request message sent to each of the at least two access point devices is different.
  • the spectrum information includes one or more of fast Fourier transform FFT data, start-up time, and sampling time;
  • the feature sequence is that the interference originates from a spectrum in a time period.
  • the feature includes one or more of a center frequency, a bandwidth, a pulse fingerprint, and a duty type;
  • the matching value is a ratio value or a positive integer;
  • the preset threshold is a ratio value or a positive integer.
  • the present invention further provides a method for interference collection, which is applied to a wireless communication network including a wireless management device and at least two access point devices, where the interference collection method includes: according to the wireless management device Requesting to collect spectrum information of the interference source; and transmitting spectrum information of the collected interference source to the wireless management device.
  • the collecting the spectrum information of the interference source according to the request of the wireless management device includes: receiving a channel switching request message that includes the specified channel and sent by the wireless management device Switching to the designated channel, and returning a channel switching response message to the wireless management device; after receiving the spectrum scanning request message sent by the wireless management device, preset a start scan time, and the sending carries the start scan time
  • the spectrum scanning request message of the information is sent to other access point devices, and the spectrum scanning is started according to the startup scanning time, and the spectrum information of the interference source is collected.
  • the transmitting the spectrum scan request message carrying the start scan time information to other access point devices is specifically: sending, by using a broadcast frame or a multicast frame, a spectrum scan request message carrying the start scan time information to other Access point device.
  • the collecting the spectrum information of the interference source according to the request of the wireless management device includes: receiving a channel switching request that includes the specified channel and sent by the wireless management device And switching to the specified channel, and returning a channel switching response message to the wireless management device; receiving a spectrum scan request message that is sent by the wireless management device, including starting a scan timestamp, and starting the spectrum according to the startup scan timestamp. Sweep Trace, collect spectrum information of the interference source.
  • the present invention further provides a wireless management device, including: a requesting module, configured to separately send, to at least two access point devices, a request for collecting spectrum information of an interference source; and an extracting module, configured to use the at least two
  • the access point device receives the spectrum information of the collected interference source, and determines that the spectrum information collected by the at least two access point devices has spectrum information of the interference source belonging to the same device type, and is connected from the at least two
  • the spectrum information collected by the ingress device extracts the spectrum information of the interference source belonging to the same device type, and the matching module is configured to match the separately extracted spectrum information of the interference source belonging to the same device type in the same time period.
  • the identification module is configured to determine whether the matching value is greater than a preset threshold, and if the threshold is greater than the preset threshold, determine the difference
  • the extracted spectrum information of the interference source belonging to the same device type is from the same interference source, if not greater than the preset Value, it is determined the source of interference spectral information belonging to the same type of device is extracted from each of the different sources of interference.
  • the requesting module includes: a channel switching unit, configured to send, to the at least two access point devices, a channel switching request message that includes a designated channel, to notify the at least Two access point devices switch to the designated channel, and receive a channel switch response message returned by each of the at least two access point devices; a scan request unit, configured to use the at least two Determining a primary access point device in the access point device, and determining that the access point device other than the primary access point device of the at least two access point devices is a secondary access point device, and The primary access point device sends a spectrum scan request message, and causes the primary access point device to send, to each slave access point device, a spectrum scan request carrying information that the start scan time is.
  • the scanning request unit determines one primary access point device from the at least two access point devices, and determines that the at least two access point devices are connected except the primary access point device.
  • the ingress device is a slave access point device, and specifically includes: comparing an interference value reported by each access point device of the at least two access point devices, and selecting an access point device with the largest interference value as the primary access point device Others are slave access point devices.
  • the scanning request unit is configured to enable the primary access point device to send, to each slave access point device, a spectrum scan request that carries the information of the startup scan time, including: causing the primary access point device to pass a broadcast frame. Sending a spectrum scan request message carrying the start scan time information to each slave access point device, or the scan request unit sets the master access point device and each slave access point device as a multicast in advance The group or pre-configures a multicast address, and causes the primary access point device to send, by using the multicast frame, a spectrum scan request message carrying the start scan time information to each slave access point device.
  • the requesting module includes: a channel switching unit, configured to send a channel switch that includes the specified channel to each of the at least two access point devices a request message, informing the at least two access point devices to switch to the designated channel, and receiving a channel switch response message returned by each of the at least two access point devices; Accessing each of the at least two access point devices The device sends a spectrum scan request message, where the spectrum scan request message includes a start scan timestamp, so that each of the at least two access point devices starts spectrum scanning according to the startup scan timestamp, and collects The spectrum information of the interference source.
  • the scan requesting unit is further configured to determine whether the response time of the at least two access point devices is synchronized, and if the response times of the at least two access point devices are synchronized, accessing the at least two
  • the start scan timestamps included in the spectrum scan request message sent by each access point device in the point device are the same. If the response times of the at least two access point devices are not synchronized, the at least two access points are sent to the at least two access points.
  • the startup scan time stamp included in the spectrum scan request message sent by each access point device in the device is different.
  • the spectrum information includes one or more of fast Fourier transform FFT data, start-up time, and sampling time; the feature sequence is that the interference source is within a time period.
  • a spectral characteristic including one or more of a center frequency, a bandwidth, a pulse fingerprint, and a duty type; the matching value is a ratio value or a positive integer; the preset threshold is a ratio value or a positive integer .
  • the present invention further provides an access point device, including: a collecting module, configured to collect spectrum information of an interference source according to a request of a wireless management device; and a sending module, configured to collect interference sources collected by the collecting module The spectrum information is sent to the wireless management device.
  • the collecting module is specifically configured to receive a channel switching request message that is sent by the wireless management device and includes a designated channel, and switch to the designated channel, and receive the wireless
  • the spectrum scanning request message sent by the management device is preset to start a scanning time, and send a spectrum scanning request message carrying the startup scanning time information to other access point devices, and start spectrum scanning according to the startup scanning time to collect interference.
  • the spectrum information of the source is specifically configured to receive a channel switching request message that is sent by the wireless management device and includes a designated channel, and switch to the designated channel, and receive the wireless
  • the spectrum scanning request message sent by the management device is preset to start a scanning time, and send a spectrum scanning request message carrying the startup scanning time information to other access point devices, and start spectrum scanning according to the startup scanning time to collect interference.
  • the spectrum information of the source is specifically configured to receive a channel switching request message that is sent by the wireless management device and includes a designated channel, and switch to the designated channel, and receive the wireless
  • the spectrum scanning request message sent by the management device
  • the collecting module sends a spectrum scanning request message carrying the startup scanning time information to other access point devices through a broadcast frame or a multicast frame.
  • the collecting module is specifically configured to receive a channel switching request message that is sent by the wireless management device and includes a designated channel, and switch to the designated channel, and receive the wireless
  • the spectrum scan request message sent by the management device including the start scan timestamp, starts the spectrum scan according to the startup scan timestamp, and collects the spectrum information of the interference source.
  • the present invention provides a system for interference collection and identification, comprising the wireless management device according to any of the foregoing third aspect or the third aspect, and at least two access point devices;
  • the at least two access point devices are configured to collect spectrum information of the interference source, and send the collected spectrum information of the interference source to the wireless management device.
  • the invention utilizes the overlapping feature matching manner, has high accuracy for the identification of the interference source, and the scheme is simple and easy to implement, and does not affect the normal wireless access service in the process of identification, due to each access
  • the time of the point device acquisition is almost synchronized, which solves the problem that the time collected by each access point device in the prior art is inconsistent, and the signal characteristics are different at different time periods, resulting in inaccurate recognition results.
  • FIG. 1 is a schematic structural diagram of a system for collecting and identifying interference according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart diagram of a method for interference recognition according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram showing the principle of overlapping features provided by an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart diagram of another method for interference recognition according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart diagram of still another method for interference recognition according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart diagram of a method for collecting interference according to an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart diagram of another method for interference collection according to an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart diagram of still another method for interference collection according to an embodiment of the present invention.
  • FIG. 9 is a schematic block diagram of a wireless management device according to an embodiment of the present invention.
  • FIG. 10 is a schematic block diagram of a request module in a wireless management device according to an embodiment of the present invention.
  • FIG. 11 is a schematic block diagram of an access point device according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a wireless management device according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of an access point device according to an embodiment of the present invention. detailed description
  • the method, device and system for interference collection and identification provided by the present invention are applied to a wireless communication network including a wireless management device and at least two access point devices.
  • the wireless management device is configured to control the at least two access point devices to collect spectrum information of the interference source, to determine the spectrum information of the same interference type collected by the at least two access point devices.
  • the wireless management device may be a wireless controller AC, or Network management equipment, or interference identification equipment for spectrum analysis. If the wireless management device is a network management device or an interference identification device for spectrum analysis, the wireless management device may directly send a command to each access point device, or may access the controller AC to each access point. The device sends a command to enable the access point device to collect the spectrum information of the interference source.
  • the at least two access point devices are configured to collect spectrum information of the interference source, and may be a wireless router, a wireless gateway, or a wireless switch.
  • the interference source is an interference device to be detected and identified, and may be a standard device conforming to the WLAN standard protocol, such as a WIFI terminal, Bluetooth, or a device that does not comply with the WLAN standard protocol, such as a microwave oven, an analog device, or a device. A proprietary agreement for cordless phones, etc.
  • the method, device and system for interference collection and identification provided by the invention utilize the overlapping feature matching method, have high accuracy for the identification of the interference source, and the scheme is simple and easy to implement.
  • 1 is a schematic structural diagram of a system for collecting and identifying interference according to an embodiment of the present invention. As shown in FIG. 1, the system for collecting and identifying interference includes: a wireless management device 30, and three accesses. Point devices 31a, 31b, 31c and interference sources 20.
  • the three access point devices 31a, 31b, 31c are used to collect spectrum information of an interference source.
  • the wireless management device 30 is configured to request the three access point devices 31a, 31b, and 31c to separately collect spectrum information of the interference source, and determine whether the three access point devices 31a, 31b, and 31c are collected and belong to the same
  • the spectrum information of the interference source of the device type when it is determined that the spectrum information of the interference source belonging to the same device type exists in the spectrum information collected by the three access point devices 31a, 31b, 31c, then the three connections are
  • the spectrum information collected by the ingress device 31a, 31b, and 31c respectively extracts the spectrum information of the interference source 20 belonging to the same device type, and the spectrum information of the interference source belonging to the same device type that is separately extracted is located in the same time period.
  • the overlapping feature matching value of the feature sequence in the same time period is calculated, and the matching value of the overlapping feature is determined to be greater than a preset threshold, and if the threshold is greater than the preset threshold, the separately extracted
  • the spectrum information of the interference source belonging to the same device type is from the same interference source, and if it is not greater than the preset threshold, it is determined to be At least two sets of spectral information from various interference sources.
  • FIG. 1 is only a schematic diagram. In an actual network system, only two access point devices may be included, and possibly three access point devices 31a may be included. More than 31, 31b, 31c include more access point devices; may only include one interference source 20, and may also include two or more interference sources.
  • 2 is a schematic flowchart of a method for interference identification according to an embodiment of the present invention, which is applied to a wireless communication network including a wireless management device and at least two access point devices, for example, in the system shown in FIG. As shown in FIG. 2, the interference identification method includes:
  • the wireless management device requests the at least two access point devices to separately collect the spectrum information of the interference source.
  • the wireless management device may collect the interference source by centrally controlling the at least two access point devices.
  • the spectrum information that is, the request is sent directly to each access point device; the wireless management device may also control the spectrum information of the interference source by master-slave control of the at least two access point devices, that is, from the at least two
  • the ingress device determines a primary access point device, sends a request to the primary access point device, and then sends a request to the secondary access point device through the primary access point device; in the system shown in FIG. 1, the wireless management device 30
  • the three access point devices 31a, 31b, 31c are requested to collect the spectrum information of the interference source 20.
  • the radio management device determines whether the at least two access point devices collect spectrum information of interference sources belonging to the same device type, to determine spectrum information collected by the at least two access point devices.
  • the wireless management device 30 determines whether the three access point devices 31a, 31b, 31c are collected by the same device type.
  • the spectrum information of the interference source determines that the spectrum information collected by the three access point devices 31a, 31b, and 31c has spectrum information of interference sources belonging to the same device type.
  • Step 102 Extract, from the spectrum information collected by the at least two access point devices, the spectrum information of the interference source that belongs to the same device type.
  • the radio management device extracts spectrum information of the interference source belonging to the same device type from the spectrum information collected by the at least two access point devices.
  • the wireless management device 30 extracts the spectrum information of the interference source belonging to the same device type from the spectrum information collected by the three access point devices 31a, 31b, and 31c, respectively.
  • the spectral information includes one or more of fast Fourier transform FFT data, up to time, and sampling time.
  • the wireless management device matches the feature sequences located in the same time period in the spectrum information of the interference sources belonging to the same device type, and calculates the features in the same time period.
  • the overlap feature of the sequence matches the value.
  • the sequence of features can be understood as the spectral characteristics of the interferer over a period of time, including one or more of the center frequency, bandwidth, pulse fingerprint, and duty cycle type. And determining, by the same interference source, that the extracted spectrum information of the interference source belonging to the same device type is from the same interference source, if not greater than the Presetting the threshold, determining that the separately extracted spectrum information of the interference sources belonging to the same device type are from different interference sources;
  • the wireless management determines whether the calculated overlapping feature matching value is greater than a preset threshold; if greater than the preset threshold, determining that the separately extracted spectrum information of the interference source belonging to the same device type is from the same If the interference source is not greater than the preset threshold, the spectrum information determined to be the separately extracted interference sources belonging to the same device type is from different interference sources.
  • the overlapping feature is the same or similar feature in the feature sequence in the same time period in the spectrum information of the interference source of the same device type extracted by the at least two access point devices.
  • FIG. 3 a schematic diagram of the principle of overlapping features according to an embodiment of the present invention is shown.
  • the three access point devices 31a, 31b, and 31c in the system shown in FIG. 1 are used as an example to illustrate how to identify overlapping features, as shown in FIG. Matching three access point devices 31a, 31b, 31c - a total of three sets of spectral information in the same time period, that is, a feature sequence in T1, and calculating overlapping feature matching values.
  • the overlapping feature matching value is a ratio or a positive integer.
  • the overlapping feature matching value is a ratio of the spectrum information of the overlapping feature to all the spectrum information of the interference source, that is, at least two access point devices respectively extract the spectrum information of the interference source belonging to the same device type at the same time.
  • the ratio of the spectrum information of the feature sequence in the segment to the total spectrum information of the interference source; correspondingly, the preset threshold used for the determination is a ratio value, and the corresponding preset threshold, such as 0.5, may be set according to the empirical value.
  • the overlapping feature matching value is the number of overlapping features, ⁇ , two or more consecutive feature sequences in the spectrum information of the interference source belonging to the same device type extracted by one access point device and another accessing
  • the number of features of the same feature sequence in the spectrum information of the interference source of the same device type extracted by the point device; correspondingly, the preset threshold for determining is an integer, for example, setting a corresponding threshold according to an empirical value, such as 5.
  • the interference source 20 is Bluetooth
  • the overlapping feature matching value is the ratio of the spectrum information of the overlapping feature to the total spectrum information of the interference source 20
  • the predetermined threshold value is 0.5.
  • the wireless management device 30 matches the access point devices 31a, 31b, and 31c - the feature sequence of the three sets of spectrum information in the same time period, and the calculated overlapping feature matching value is 0.7, and the matching value is determined to be greater than the preset threshold.
  • determining that the separately extracted spectrum information of the interference source belonging to the same device type is from the same interference source in other words, if the wireless management device 30 matches the access point devices 31a, 31b, 31c - the total three sets of spectrum information are in the same
  • the calculated overlap feature value is 0.3, and the value is not greater than the preset threshold value of 0.5, it is determined that the separately extracted spectrum information of the interference source belonging to the same device type is from different interference sources.
  • FIG. 4 is a schematic flowchart of another method for interference identification according to an embodiment of the present invention. Specifically, in the embodiment of the present identification method, based on the interference identification method shown in FIG. 2, only Further introduces 100 an interference recognition method that specifically adopts a master-slave control scan. As shown in FIG. 4, the method includes:
  • the wireless management device sends a channel switch request message including the designated channel to the at least two access point devices, and notifies the at least two access point devices to switch to the designated channel.
  • the wireless management device 30 transmits a channel switch request message including a designated channel to each of the three access point devices 31a, 31b, 31c, notifying the three access point devices 31a.
  • Each access point device in 31b, 31c switches to the designated channel, and it should be noted that the wireless management device 30 transmits channel switching to each of the three access point devices 31a, 31b, 31c.
  • the specified channel carried in the request message is a specific frequency band, so that the three access point devices 31a, 31b, and 31c respectively switch to the specific frequency band, and three access points are ensured.
  • the devices 31a, 31b, 31c communicate with the wireless management device 30 in the same channel.
  • the wireless management device receives the channel switch response message replied by the at least two access point devices, and confirms. Specifically, in the system shown in FIG. 1, after the three access point devices 31a, 31b, 31c switch to the designated channel, the channel switching response message is replied to the wireless management device 30, and the wireless management device 30 goes to the third.
  • the access point devices 31a, 31b, 31c reply with a confirmation message.
  • the wireless management device determines one primary access point device from the at least two access point devices, and the other, that is, the at least two access point devices
  • the access point device other than the primary access point device is a secondary access point device.
  • the wireless management device may compare the interference value reported by each access point device of the at least two access point devices, and select an access point device with the largest interference value as the primary access point device, and other That is, the access point device of the at least two access point devices except the primary access point device acts as a secondary access point device, and marks the primary access point device to the primary device.
  • the access point device sends the tag information.
  • the wireless management device determines the primary access point device based on the severity of the interference.
  • the wireless management device 30 determines the access point device 31a as the primary access point device from the three access point devices 31a, 31b, 31c according to the severity of the interference, and the other two access points.
  • the devices 31b, 31c are set from the access point
  • the wireless management device 30 then transmits a spectrum scan request to the primary access point device 31a.
  • the wireless management device sends a spectrum scan request message to the primary access point device, and causes the primary access point device to send, to each slave access point device, a spectrum scan request carrying information of a start scan time, optionally
  • the wireless management device receives the spectrum scan response message that is sent by the primary access point device. Specifically, after receiving the spectrum scan request message sent by the wireless management device, the primary access point device presets the start scan time.
  • a spectrum scan request that carries the information of the start scan time; the start scan time is a relative time, and the primary access point device sends the information to each slave access point device.
  • the scan is started after the start scan time of the spectrum scan request, and each slave access point device receives the spectrum scan of the master access point device.
  • the scan is initiated after the start of the start scan time of the request. Basically, it is ensured that the primary access point device and each of the secondary access point devices initiate scanning at the same time, thereby scanning the pulse signals of the same time period.
  • the wireless management device 30 sends a spectrum scan request message to the primary access point device 31a, so that the primary access point device 31a is directed to the two secondary access point devices 31b, 31c sends a spectrum scan request carrying a message with a start scan time.
  • the primary access point device 31a receives the spectrum scanning request, the spectrum scanning response message is returned, and the primary access point device 31a does not immediately start the scanning, and presets a startup scanning time, for example, tl, and then According to the time of starting the scan, the scan is started after the time t1 after the start of the spectrum scan request is sent, and the primary access point device 31a carries the start scan time for sending the spectrum scan request to the two access point devices 31b and 31c. Tl.
  • the two slave access point devices 31b, 31c After receiving the request, the two slave access point devices 31b, 31c set the timing, and start to start scanning after receiving the spectrum scan request after the start scan time t1, the master access point device 31a and the slave access point device 31b,
  • the message between 31c is transmitted by wireless electromagnetic waves, and the time difference between the two access point devices 31b, 31c is nanosecond level, and the millisecond level required for relative spectrum scanning is negligible. Therefore, it is basically ensured that the three access point devices 31a, 31b, 31c start scanning at the same time, thereby scanning the pulse signals of the same time period.
  • Sending a spectrum scan request to the primary access point device may be implemented in two ways.
  • the wireless management device causes the primary access point device to send, by using a broadcast frame, a spectrum scan request carrying the start scan time information.
  • Each of the slave access point devices includes: the wireless management device sends the spectrum scan request to the primary access point device, where the method includes: setting the primary access point device and each slave access point device as a group in advance
  • the multicast group is pre-configured with a multicast address, and the primary access point device sends a spectrum scan request carrying the start scan time information to each slave access point device through the multicast frame.
  • the wireless management device receives the at least two access point devices, that is, the primary access point device and each The spectrum information of the interference source collected after the spectrum scanning is started by the access point device according to the startup scan time; and determining whether the spectrum information of the interference source collected by the primary access point device and each slave access point device is There is spectrum information for interference sources belonging to the same device type. For details, see 101, and details are not described here.
  • the radio management device extracts spectrum information of the interference source belonging to the same device type from the spectrum information collected by the at least two access point devices. For details, see 102, and details are not described here.
  • the wireless management device matches the feature sequences located in the same time period in the spectrum information of the interference sources belonging to the same device type, and calculates the features in the same time period.
  • the overlap feature of the sequence matches the value.
  • the sequence of features can be understood as the spectral characteristics of the interferer over a period of time, including one or more of the center frequency, bandwidth, pulse fingerprint, and duty cycle type. For details, see 103, and I will not repeat them here.
  • the wireless management determines whether the calculated overlapping feature matching value is greater than a preset threshold; if greater than the preset threshold, determining that the separately extracted spectrum information of the interference source belonging to the same device type is from the same If the interference source is not greater than the preset threshold, the spectrum information determined to be the separately extracted interference sources belonging to the same device type is from different interference sources. For details, see 104, and I will not repeat them here.
  • the wireless management device adopts a master-slave control scanning mode by determining a primary access point device, that is, the primary access point device controls the preset startup scan time from the access point device.
  • the spectrum scanning is started to ensure that the interference characteristics of a range of overlapping time ranges can be obtained between the access point devices, thereby ensuring that the access point devices scan the pulse signals of the same time period, based on the relative time of the air interface, independent of access.
  • FIG. 5 is a schematic flowchart of still another method for interference identification according to an embodiment of the present invention. Specifically, in the embodiment of the present identification method, based on the interference identification method shown in FIG. 2, further The introduction 100 specifically adopts an interference recognition method for centralized control scanning. As shown in FIG. 5, the method includes:
  • the wireless management device sends a channel switch request message including the designated channel to the at least two access point devices, and notifies the at least two access point devices to switch to the designated channel; specifically, In the system shown in FIG. 1, the wireless management device 30 transmits a channel switching request message including a designated channel to each of the three access point devices 31a, 31b, 31c, notifying the three accesses.
  • Each of the point devices 31a, 31b, 31c switches to the designated channel, and it should be noted that the wireless management device 30 transmits to each of the three access point devices 31a, 31b, 31c.
  • the designated channel carried in the channel switching request message is a specific frequency band, so that the three access point devices 31a, 31b, 31c respectively switch to the specific frequency band, ensuring that the three access point devices 31a, 31b, 31c are The wireless management device 30 is in communication in the same channel.
  • the wireless management device receives the channel switch response message replied by the at least two access point devices, and confirms. Specifically, in the system shown in FIG. 1, after the three access point devices 31a, 31b, and 31c switch to the designated channel, the channel management response message is returned to the wireless management device 30, and the wireless management device 30 goes to the third.
  • the access point devices 31a, 31b, 31c reply with a confirmation message.
  • the spectrum scan request message includes a start scan timestamp, so that the at least two access point devices are Each access point device starts a spectrum scan according to the startup scan timestamp, and collects spectrum information of the interference source.
  • the wireless management device sends the spectrum scan request message to each of the at least two access point devices, it is required to determine whether the response time of the at least two access point devices is synchronized, if The response time synchronization of the at least two access point devices is the same, and the start scan timestamp included in the spectrum scan request message sent to each of the at least two access point devices is the same, if the at least The response times of the two access point devices are not synchronized, and the start scan time stamps included in the spectrum scan request message sent to each of the at least two access point devices are different.
  • the wireless management device needs to determine the three access point devices 31a, 31b before transmitting the spectrum scan request message to the three access point devices 31a, 31b, 31c. Whether the response time of 31c is synchronized, if the response times of the three access point devices 31a, 31b, 31c are synchronized, the spectrum scan request message sent to the three access point devices 31a, 31b, 31c is included.
  • the startup scan timestamps are the same, and if the response times of the three access point devices 31a, 31b, 31c are not synchronized, the spectrum scan request sent to the three access point devices 31a, 31b, 31c is included in the The startup scan timestamp is different.
  • the spectrum information collected by the at least two access point devices includes the spectrum information of the interference source of the same device type. For details, refer to 101, and details are not described herein.
  • the radio management device extracts spectrum information of the interference source belonging to the same device type from the spectrum information collected by the at least two access point devices. For details, see 102, and details are not described here.
  • the wireless management device matches the feature sequences located in the same time period in the spectrum information of the interference sources belonging to the same device type, and calculates the features in the same time period.
  • the overlap feature of the sequence matches the value.
  • the sequence of features can be understood as the spectral characteristics of the interferer over a period of time, including one or more of the center frequency, bandwidth, pulse fingerprint, and duty cycle type. For details, see 103, and I will not repeat them here.
  • the wireless management determines whether the calculated overlapping feature matching value is greater than a preset threshold; if greater than the preset threshold, determining that the separately extracted spectrum information of the interference source belonging to the same device type is from the same If the interference source is not greater than the preset threshold, the spectrum information determined to be the separately extracted interference sources belonging to the same device type is from different interference sources. For details, see 104, and I will not repeat them here.
  • FIG. 6 is a schematic flowchart of a method for collecting interference according to an embodiment of the present invention. The method is applied to a wireless communication network including a wireless management device and at least two access point devices, where the wireless communication network may be, for example, The system shown in FIG. 1; as shown in FIG. 6, the interference collection method includes:
  • FIG. 7 is a schematic flowchart of another method for collecting interference according to an embodiment of the present invention.
  • the wireless management device determines a master access point device from the at least two access point devices, and Determining, among the at least two access point devices, an access point device other than the primary access point device as a secondary access point device. As shown in FIG. 7, the method includes:
  • the wireless management device 30 After receiving the channel switching request message that is sent by the wireless management device and including the specified channel, switching to the designated channel, and returning a response message to the wireless management device; specifically, the at least two access points Each access point device in the device receives the channel switching request message that is sent by the wireless management device and includes the specified channel, and then switches to the designated channel, and returns a response message to the wireless management device; In the system, the wireless management device 30 transmits a channel switching request message including the designated channel to each of the three access point devices 31a, 31b, and 31c, and notifies each of the three access point devices 31a, 31b, and 31c. The ingress device switches to the designated channel.
  • the designated channel carried in the channel switching request message sent by the radio management device 30 to each of the three access point devices 31a, 31b, and 31c is a specific one. Frequency band, so that three access point devices 31a, 31b, 31c respectively switch to the specific frequency band, ensuring three access point devices 31a 31b, 31c communicate with the wireless management device 30 in the same channel, and return a response message to the wireless management device 30, that is, after the three access point devices 31a, 31b, 31c switch to the designated channel, The channel management response message is replied to the wireless management device 30, and the wireless management device 30 replies to the three access point devices 31a, 31b, 31c with an acknowledgment message.
  • the wireless management device determines one primary access point device from the at least two access point devices, and determines, among the at least two access point devices, other than the primary access point device.
  • the access point device is a slave access point device, and sends a spectrum scan request message to the master access point device.
  • the wireless management device can compare each of the at least two access point devices.
  • the interference value reported by the device is selected, and the access point device having the largest interference value is selected as the primary access point device, and the other, that is, the access of the at least two access point devices except the primary access point device.
  • the point device acts as a slave access point device and marks the primary access point device to send tag information to the primary access point device.
  • the wireless management device determines the primary access point device based on the severity of the interference.
  • the wireless management device 30 determines the access point device 31a as the primary access point device from the three access point devices 31a, 31b, 31c according to the interference severity, and the other two access points.
  • the devices 31b, 31c are slave access point devices.
  • the primary access point device of the at least two access point devices After receiving the spectrum scan request message sent by the wireless management device, replying to the spectrum scan response message;
  • the primary access point device of the at least two access point devices receives the spectrum scan request sent by the wireless management device and returns a spectrum scan response message; that is, in the system shown in FIG. 1, the wireless management device 30 is After transmitting the spectrum scan request to the primary access point device 31a, the spectrum scan response message replied by the primary access point device 31a is received.
  • the primary access point device receives a spectrum scan of the wireless management device. After the request message is started, a scan time is preset, and then a spectrum scan request carrying the start scan time information is sent to each of the slave access point devices, and the spectrum is controlled from the access point device at a preset start scan time. scanning.
  • the startup scan time is a relative time, and the primary access point device starts scanning after the startup scan time after sending a spectrum scan request to each slave access point device, and each slave access point device The scan is initiated after the start scan time after receiving the spectrum scan request from the primary access point device. Basically, it can be ensured that the primary access point device and each of the secondary access point devices start scanning at the same time, thereby scanning the pulse signals of the same time period.
  • the primary access point device starts spectrum scanning according to the startup scan time, and collects spectrum information of the interference source. It can be understood that each of the at least two access point devices also starts spectrum scanning according to the startup scan time, and collects spectrum information of the interference source.
  • the primary access point device 31a receives the spectrum scanning request, the spectrum scanning response message is returned, and the primary access point device 31a does not immediately start the scanning, and presets a startup scanning time, for example, tl, and then According to the time of starting the scan, the scan is started after the time t1 after the start of the spectrum scan request is sent, and the primary access point device 31a sends a spectrum scan request to the two slave access point devices 31b, 31c, and carries the start scan. Time tl. After receiving the request, the two slave access point devices 31b, 31c set the timing, and start to start scanning after receiving the spectrum scan request after the start scan time t1, the master access point device 31a and the slave access point device 31b.
  • a startup scanning time for example, tl
  • the message between 31c is transmitted by wireless electromagnetic wave, and the time difference between the two access point devices 31b, 31c is nanosecond level, and the millisecond level required for relative spectrum scanning is negligible. Therefore, it is basically ensured that the three access point devices 31a, 31b, 31c start the scanning at the same time, thereby scanning the pulse signals of the same time period.
  • the primary access point device sends the spectrum scan request carrying the start scan time information to other access point devices, and the other is to send a spectrum scan request carrying the start scan time information to the broadcast frame.
  • Other access point devices another type transmits a spectrum scan request carrying the start scan time information to other access point devices through a multicast frame.
  • the interference collection method provided in this embodiment adopts a master-slave control scanning mode by determining a primary access point device, that is, the primary access point device controls the spectrum scanning from the access point device at a preset startup scanning time.
  • the interference characteristics of the overlapping time ranges can be obtained between the devices of the access points, and the pulse signals of the same time period are scanned by the access point devices.
  • the interference collection method provided in this embodiment is based on the air interface.
  • FIG. 8 is a schematic flowchart of still another method for collecting interference according to an embodiment of the present invention. Specifically, in the embodiment of the collecting method, based on the interference collecting method shown in FIG. 6, further Introduction 400 is an interference collection method that specifically takes a centralized control scan. As shown in FIG. 8, the method includes:
  • each access point device in the in-point device After receiving the channel switching request message that is sent by the wireless management device and including the specified channel, switching to the designated channel, and returning a channel switching response message to the wireless management device; specifically, the at least two connections Each access point device in the in-point device receives the channel switching request message that is sent by the wireless management device and includes the specified channel, and then switches to the designated channel, and returns a channel switching response message to the wireless management device; In the system shown in FIG.
  • the wireless management device 30 transmits a channel switching request message including a designated channel to each of the three access point devices 31a, 31b, 31c, notifying the three Each of the access point devices 31a, 31b, 31c switches to the designated channel, and it should be noted that the wireless management device 30 applies to each of the three access point devices 31a, 31b, 31c.
  • the designated channel carried in the channel switching request message sent by the device is a specific frequency band, so that the three access point devices 31a, 31b, 31c respectively Switching to the particular frequency band, ensuring that the three access point devices 31a, 31b, 31c communicate with the wireless management device 30 in the same channel and return a channel switch response message to the wireless management device 30, ie three After the access point devices 31a, 31b, 31c switch to the same channel, the channel management response message is replied to the wireless management device 30, and the wireless management device 30 returns an acknowledgment message to the three access point devices 31a, 31b, 31c.
  • Receive a spectrum scan request message that is sent by the wireless management device including starting a scan timestamp, start a spectrum scan according to the start scan timestamp, and collect spectrum information of the interference source.
  • Each of the at least two access point devices receives a spectrum scan request message that is sent by the wireless management device, including a start scan timestamp, starts a spectrum scan according to the start scan timestamp, and collects interference sources. Spectrum information.
  • the wireless management device initiates the spectrum scan request sent to each of the at least two access point devices. Scanning timestamps are the same. If the response times of the at least two access point devices are not synchronized, the wireless management device sends a spectrum scan request to each of the at least two access point devices.
  • the startup scan timestamps included are different.
  • the wireless management device is in the three access point devices 31a, 31b, 31c Before transmitting the spectrum scanning request, it is required to determine whether the response times of the three access point devices 31a, 31b, 31c are synchronized, and if the response times of the three access point devices 31a, 31b, 31c are synchronized, then The start scan timestamps included in the spectrum scan request sent by each of the three access point devices 31a, 31b, 31c are the same, if the response times of the three access point devices 31a, 31b, 31c are not Synchronization, the start scan time stamp included in the spectrum scan request sent to each of the at least two access point devices is different.
  • Each of the at least two access point devices transmits spectrum information of the collected interference source to the wireless management device.
  • three access point devices 31a, 31b, 31c respectively transmit spectrum information of the respective collected interference sources 20 to the wireless management device 30.
  • each of the at least two access point devices receives the spectrum scan request including the start scan timestamp, and then starts the spectrum scan according to the start scan timestamp to achieve synchronous collection and interference.
  • the purpose of the spectrum information of the source is as follows: Since the time collected by each access point device is almost synchronized, the time of the collection of the access point devices in the prior art can be solved, and the difference in signal characteristics in different time periods leads to the recognition result. Inaccurate question.
  • FIG. 9 is a schematic block diagram of a wireless management device according to an embodiment of the present invention, which is used to implement the interference identification method shown in FIG. 2, FIG. 4 and FIG. 5;
  • the inventive wireless management device includes: a requesting module 901, an extracting module 902, a matching module 903, and an identifying module 904.
  • the requesting module 901 is configured to separately send a request for collecting spectrum information of the interference source to the at least two access point devices. Specifically, in the system shown in FIG. 1, the requesting module 901 is configured to connect to the three The in-point devices 31a, 31b, 31c respectively transmit requests for collecting spectrum information of the interference source.
  • the extracting module 902 is configured to receive spectrum information of the collected interference source from the at least two access point devices, and determine that the spectrum information collected by the at least two access point devices has a spectrum of interference sources belonging to the same device type.
  • the information of the interference source belonging to the same device type is separately extracted from the spectrum information collected by the at least two access point devices; specifically, in the system shown in FIG. Receiving the spectrum information of the collected interference source from the three access point devices 31a, 31b, and 31c, and determining that the spectrum information collected by the three access point devices 31a, 31b, and 31c belongs to the same device type.
  • the spectrum information of the interference source belonging to the same device type is separately extracted from the spectrum information collected by the three access point devices 31a, 31b, and 31c; the spectrum information includes fast Fourier Transform one or more of the FFT data, up to the time, and the sampling time.
  • the matching module 903 is configured to match the feature sequences that are located in the same time period in the spectrum information of the interference sources that belong to the same device type, and calculate the overlapping feature matching values of the feature sequences that are located in the same time period; Description A sequence of features can be understood as a spectral signature of an interferer over a period of time, including one or more of the center frequency, bandwidth, pulse fingerprint, and duty cycle type.
  • the identification module 904 is configured to determine whether the overlap feature matching value is greater than a preset threshold. If the preset threshold is greater than the preset threshold, determine that the separately extracted spectrum information of the interference source belonging to the same device type is from the same interference source, if not If the threshold value is greater than the preset threshold, it is determined that the separately extracted spectrum information of the interference source belonging to the same device type is from different interference sources.
  • the overlapping feature is the same or similar feature in the feature sequence in the same time period in the spectrum information of the interference source of the same device type extracted by the at least two access point devices.
  • FIG. 3 a schematic diagram of the principle of overlapping features according to an embodiment of the present invention is shown.
  • the three access point devices 31a, 31b, and 31c in the system shown in FIG. 1 are used as an example to illustrate how to identify overlapping features, as shown in FIG. Matching three access point devices 31a, 31b, 31c - a total of three sets of spectral information in the same time period, that is, a feature sequence in T1, and calculating overlapping feature matching values.
  • the overlapping feature matching value is a ratio or a positive integer.
  • the overlapping feature matching value is a ratio of the spectrum information of the overlapping feature to all the spectrum information of the interference source, that is, at least two access point devices respectively extract the spectrum information of the interference source belonging to the same device type at the same time.
  • the ratio of the spectrum information of the feature sequence in the segment to the total spectrum information of the interference source; correspondingly, the preset threshold used for the determination is a ratio value, and the corresponding preset threshold, such as 0.5, may be set according to the empirical value.
  • the overlapping feature matching value is the number of overlapping features, ⁇ , two or more consecutive feature sequences in the spectrum information of the interference source belonging to the same device type extracted by one access point device and another accessing
  • the number of features of the same feature sequence in the spectrum information of the interference source of the same device type extracted by the point device; correspondingly, the preset threshold for determining is an integer, for example, setting a corresponding threshold according to an empirical value, such as 5.
  • the interference source 20 is Bluetooth
  • the overlapping feature matching value is the ratio of the spectrum information of the overlapping feature to the total spectrum information of the interference source 20
  • the predetermined threshold value is 0.5.
  • the wireless management device 30 matches the access point devices 31a, 31b, and 31c - the feature sequence of the three sets of spectrum information in the same time period, and the calculated overlapping feature matching value is 0.7, and the matching value is determined to be greater than the preset threshold.
  • FIG. 10 it is a schematic block diagram of another wireless management device according to an embodiment of the present invention.
  • the wireless management device includes various modules as shown in FIG.
  • the requesting module 901 specifically includes: a channel switching unit 9011 and a scan requesting unit 9012.
  • the channel switching unit 9011 is configured to send, to each access point device of the at least two access point devices, a channel switch request message including a designated channel, to notify the at least two access point devices to switch to the Specifying a channel; specifically, in the system shown in FIG. 1, a channel switching request message including a designated channel is sent to the three access point devices 31a, 31b, and 31c, and the three connections are notified.
  • the in-point devices 31a, 31b, and 31c switch to the designated channel, and receive the response message returned by the three access point devices 31a, 31b, and 31c, and then confirm.
  • the designated channel carried in the channel switching request message sent by the wireless management device 30 to each of the three access point devices 31a, 31b, and 31c is a specific frequency band, so that three interfaces are connected.
  • the in-point devices 31a, 31b, 31c respectively switch to the specific frequency band, ensuring that the three access point devices 31a, 31b, 31c communicate with the wireless management device 30 in the same channel, and return a response message to the
  • the channel management response message is returned to the wireless management device 30, and the wireless management device 30 redirects to the three access point devices 31a.
  • 31b, 31c reply to the confirmation message.
  • the scan request unit 9012 is connected to the channel switching unit 9011, and configured to send a spectrum scan request to the at least two access point devices, so that the at least two access point devices collect spectrum information of the interference source.
  • the wireless communication network adopts a master-slave control scanning mode
  • the wireless management device determines a primary access point device and is between the primary access point device and the secondary access point device.
  • the scanning requesting unit 9012 is specifically configured to determine one primary access point device from the at least two access point devices, and determine the at least two accesses
  • the access point device except the primary access point device in the point device is a slave access point device, and sends a spectrum scan request message to the primary access point device, and causes the primary access point device to And transmitting, by the access point device, a spectrum scan request message carrying the start scan time information, so that the primary access point device and each slave access point device collect spectrum information of the interference source at the start scan time.
  • the primary access point device After receiving the spectrum scan request message sent by the wireless management device, the primary access point device presets the start scan time, and then sends a spectrum carrying the information of the start scan time to each slave access point device. Scanning request; the startup scan time is a relative time, and the primary access point device starts scanning after the start scan time from the start of sending a spectrum scan request to each slave access point device, and each slave access point The device initiates scanning after receiving the start scan time from the start of the spectrum scan request of the primary access point device.
  • the scan requesting unit 9012 determines one primary access point device from the plurality of access point devices, and determines an access point of the at least two access point devices except the primary access point device.
  • the device selects, from the access point device, the interference value reported by each access point device of the at least two access point devices, and selects one access point device with the largest interference value as the primary access point device, and the other device, That is, the access point device of the at least two access point devices except the primary access point device acts as a secondary access point device, and marks the primary access point device to the primary access device.
  • the inbound device sends the tag information.
  • the point device control starts spectrum scanning from the access point devices 31b, 31c at the startup scan time, and basically ensures that the three access point devices 31a, 31b, 31c start scanning at the same time, thereby scanning pulses of the same time period.
  • the signal; and optionally, the wireless management device 30 receives the spectrum scan response message replied by the primary access point device 31a after transmitting the spectrum scan request message to the primary access point device 31a.
  • the primary access point device 31a receives the spectrum scanning request, the spectrum scanning response message is returned, and the primary access point device 31a does not immediately start the scanning, and presets a startup scanning time, for example, tl, and then According to the time when the scanning is started, the scanning is started after the scanning of the spectrum scanning request is started, and the time when the primary access point device 31a sends the spectrum scanning request to the two access point devices 31b and 31c to carry the startup scanning. Tl.
  • the two slave access point devices 31b, 31c After receiving the request, the two slave access point devices 31b, 31c set the timing, and start to start scanning after receiving the spectrum scan request after the start scan time t1, the master access point device 31a and the slave access point device 31b,
  • the message between 31c is transmitted by wireless electromagnetic waves, and the time difference between the two access point devices 31b, 31c is nanosecond level, and the millisecond level required for relative spectrum scanning is negligible. Therefore, it is basically ensured that the three access point devices 31a, 31b, 31c start scanning at the same time, thereby scanning the pulse signals of the same time period.
  • the scanning request unit 9012 may enable the primary access point device to send, by using a broadcast frame, a spectrum scanning request carrying the startup scanning time information to the secondary access point devices 31b, 31c; or the primary connection may be pre-selected
  • the ingress device and the slave access point device are configured as a multicast group or a multicast address is pre-configured, and then the master access point device sends a spectrum scan request carrying the start scan time information to the multicast access frame. From the access point device.
  • the extracting module 902 is specifically configured to receive, from the primary access point device and each of the secondary access point devices, spectrum information of the interference source that is started to be scanned and collected according to the startup scanning time, when determining the primary access point.
  • the extracted information is extracted from the spectrum information collected by the primary access point device and each of the access point devices. Spectral information of interference sources belonging to the same device type.
  • the wireless communication network adopts a centralized control scanning mode
  • the wireless management device ensures that the at least two access point devices acquire interference features within an overlapping time range.
  • the scan requesting unit 9012 is configured to separately send, to each of the at least two access point devices, a spectrum scan request that carries a start scan timestamp; the receiving unit 9013, specifically And receiving, by the at least two access point devices, spectrum information of the interference source that is started by performing spectrum scanning according to the startup scan timestamp; specifically, in the system of FIG. 1, receiving three access point devices 31a, 31b, 31c, after collecting the spectrum scan according to the startup scan timestamp, the collected location The spectrum information of the interference source 20 is described.
  • the scan requesting unit 9012 is further configured to determine whether the response time of the at least two access point devices is synchronized. And if the response time of the at least two access point devices is synchronized, sending, to the at least two access point devices, a spectrum scanning request that carries the same startup scan timestamp; if the at least two access point devices The response time is not synchronized, and the spectrum scan request carrying the different startup scan timestamps is respectively sent to the at least two access point devices according to the response times of the at least two access point devices.
  • the wireless management device may use the master-slave control spectrum scanning to obtain overlapping features based on air interface relative time, independent of time synchronization between the access point devices, and the solution is simple and easy to implement and accurate.
  • the rate is high.
  • the wireless management device sets the startup scan timestamp according to the relative time between the access point devices, so that the access point device synchronously collects the spectrum information of the interference source, and solves the access in the prior art.
  • the time of point device acquisition is inconsistent, and the signal characteristics of different time periods are different, resulting in inaccurate recognition results.
  • FIG. 11 it is a schematic block diagram of an access point device according to an embodiment of the present invention, which is used to implement the interference collection method shown in FIG. 6 , FIG. 7 and FIG. 8 of the present invention;
  • the access point device includes: a collection module 1101 and a transmission module 1102.
  • the collecting module 1101 is configured to collect spectrum information of the interference source according to the request of the wireless management device; for example, in the system shown in FIG. 1, the collecting module 1101 of the three access point devices 31a, 31b, 31c according to the wireless management device The request of 30 collects the spectrum information of the interferer.
  • the sending module 1102 is configured to send the spectrum information of the interference source collected by the collecting module 1101 to the wireless management device. That is, the transmitting module 1102 of the three access point devices 31a, 31b, 31c transmits the collected spectrum information of the interference source 20 to the wireless management device 30.
  • the collecting module 1101 is specifically configured to receive a channel switching request message that is sent by the wireless management device and includes a specified channel, and switch to the designated channel.
  • the method further includes: returning a channel switching response message to the wireless Manage devices.
  • the three access point devices 31a, 31b, 31c receive the channel switching request message including the designated channel sent by the wireless management device 30, the three access point devices 31a
  • the specified access channel carried in the channel switching request information is a specific frequency band, so that the three access point devices 31a, 31b, and 31c are respectively switched to the specified channel. This particular frequency band ensures that three access point devices 31a, 31b, 31c communicate with the wireless management device 30 in the same channel.
  • the access point device adopts a master-slave control scanning mode
  • the wireless management device determines a primary access point device from the at least two access point devices, and determines The access point device of the at least two access point devices except the primary access point device is a slave access point device, and then sends a spectrum sweep to the primary access point device. Trace the request message.
  • the wireless management device selects one access point device with the largest interference value as the primary access point device by comparing the interference value reported by the at least two access point devices, and the other, that is, the at least two connections
  • An access point device other than the primary access point device in the ingress device acts as a secondary access point device, and marks the primary access point device, and sends tag information to the primary access point device.
  • the wireless management device determines the primary access point device according to the severity of the interference, and then the primary access point device ensures that the interference features within a overlapping time range can be obtained between the access point devices.
  • the collecting module 1101 is further configured to receive a spectrum scanning request message sent by the wireless management device, preset a startup scanning time, and start scanning according to the Time-initiating the spectrum scanning, collecting the spectrum information of the interference source; and sending the spectrum scanning request message carrying the startup scanning time information to other access point devices, so that other access point devices start the spectrum according to the startup scanning time. Scan, collect spectrum information of the interference source.
  • the collecting module 1101 is further configured to: restore the spectrum scanning response message to the wireless management device.
  • the collecting module 1101 may send a spectrum scanning request carrying the startup scanning time information to other access point devices through a broadcast frame, or send a spectrum scanning request carrying the startup scanning time information to the multicast frame.
  • the other access point device, the wireless management device sets the primary access point device and each secondary access point device as a multicast group or configures a multicast address in advance.
  • the start scan time is a relative time, and the primary access point device starts scanning after the start scan time from the start of the spectrum scan request to each slave access point device, and each slave access point device The scan is initiated after the start of the start scan time at which the spectrum scan request of the primary access point device begins. Basically, it can be ensured that the primary access point device and each slave access point device start scanning at the same time, thereby scanning the pulse signals of the same time period.
  • the access point device adopts a centralized control scanning mode
  • the wireless management device controls each access point device to synchronously collect spectrum information of the interference source.
  • the collecting module 1101 is further configured to receive a spectrum scanning request that is sent by the wireless management device, including starting a scan timestamp, and start spectrum scanning according to the startup scan timestamp, and collect spectrum information of the interference source.
  • the scanning unit 11012 is further configured to send a spectrum scan response message to the wireless management device.
  • the wireless management device sends a spectrum scan request including the start scan timestamp to the access point device, so that the access point device starts the spectrum scan according to the start scan timestamp, and ensures that each access point device synchronizes.
  • the spectrum information of the interference source is collected, so as to solve the problem that the acquisition time of each access point device in the prior art is not synchronized, and the signal characteristics are different at different time periods, resulting in inaccurate recognition results.
  • FIG. 12 is a schematic structural diagram of a wireless management device according to an embodiment of the present invention.
  • the wireless management device includes a processor 1210 and a memory 1220.
  • the processor 1210 can be connected to the memory 1220 through a bus. Communicate.
  • the program code is stored in the memory 1220, and the program code includes a computer operation instruction.
  • the processor 1210 executes the program code, and can implement the interference identification method shown in FIG. 2, FIG. 4 and FIG. 5 of the present invention.
  • the processor 1210 executes the program code, configured to request at least two access point devices to separately collect spectrum information of an interference source, and receive spectrum information of the collected interference source from the at least two access point devices, to determine
  • the spectrum information collected by the at least two access point devices includes spectrum information of the interference source belonging to the same device type; and the spectrum information collected by the at least two access point devices respectively extracts the same device type
  • the spectrum information of the interference source is matched; the feature sequence located in the same time period in the spectrum information of the interference source belonging to the same device type is respectively matched, and the overlapping feature matching value of the feature sequence in the same time period is calculated; Determining whether the overlap feature matching value is greater than a preset threshold, and if the preset threshold is greater than the preset threshold, determining that the separately extracted spectrum information of the interference source belonging to the same device type is from the same interference source, if not greater than the preset Threshold, determining that the separately extracted spectrum information of the interference source belonging to the same device type comes from The same sources of interference.
  • the memory 1220 can also be used to store spectral information.
  • the overlapping feature is the same or similar feature in the feature sequence in the same time period in the spectrum information of the interference source of the same device type extracted by the at least two access point devices.
  • FIG. 3 a schematic diagram of the principle of overlapping features according to an embodiment of the present invention is shown.
  • the three access point devices 31a, 31b, and 31c in the system shown in FIG. 1 are used as an example to illustrate how to identify overlapping features, as shown in FIG. Matching three access point devices 31a, 31b, 31c - a total of three sets of spectral information in the same time period, that is, a feature sequence in T1, and calculating overlapping feature matching values.
  • the overlapping feature matching value is a ratio or a positive integer.
  • the overlapping feature matching value is a ratio of the spectrum information of the overlapping feature to all the spectrum information of the interference source, that is, at least two access point devices respectively extract the spectrum information of the interference source belonging to the same device type at the same time.
  • the ratio of the spectrum information of the feature sequence in the segment to the total spectrum information of the interference source; correspondingly, the preset threshold used for the determination is a ratio value, and the corresponding preset threshold, such as 0.5, may be set according to the empirical value.
  • the overlapping feature matching value is the number of overlapping features, ⁇ , two or more consecutive feature sequences in the spectrum information of the interference source belonging to the same device type extracted by one access point device and another accessing
  • the number of features of the same feature sequence in the spectrum information of the interference source of the same device type extracted by the point device; correspondingly, the preset threshold for determining is an integer, for example, setting a corresponding threshold according to an empirical value, such as 5.
  • the processor 1210 is specifically configured to send, to each access point device of the at least two access point devices, a channel switch request message that includes a designated channel, to notify the at least two access point devices to switch to the Designating a channel; receiving a channel switch response message returned by each of the at least two access point devices; determining a primary access point device from the at least two access point devices, and determining the An access point device of the at least two access point devices except the primary access point device is a secondary access point device, and sends a spectrum scan request message to the primary access point device, so that the primary connection Enter
  • the point device sends a spectrum scan request message carrying the information of the start scan time to each slave access point device, and receives a spectrum scan response message replied by the master access point device.
  • the start scan time is a relative time, and the primary access point device starts scanning after the start scan time from the start of the spectrum scan request to each slave access point device, and each slave access point device
  • the scan is initiated after the start of the start scan time at which the spectrum scan request of the primary access point device begins. Basically, it can be ensured that the primary access point device and each of the secondary access point devices start scanning at the same time, thereby scanning the pulse signals of the same time period. or,
  • the processor 1210 is specifically configured to send, to each access point device of the at least two access point devices, a channel switch request message that includes a designated channel, to notify the at least two access point devices to switch to the Specifying a channel; receiving a channel switch response message returned by each of the at least two access point devices; transmitting a spectrum scan request message to each of the at least two access point devices,
  • the spectrum scan request message includes a start scan timestamp, so that each of the at least two access point devices initiates a spectrum scan according to the startup scan timestamp, and collects spectrum information of the interference source.
  • FIG. 13 is a schematic structural diagram of an access point device according to an embodiment of the present invention. As shown, the access point device includes a processor 1310 and a memory 1320.
  • the processor 1310 can be connected to the bus through the bus.
  • the memory 1320 performs communication.
  • the program code is stored in the memory 1310, and the program code includes a computer operation instruction.
  • the processor 1310 executes the program code to implement the interference collection method of the present invention as shown in Figs. 6, 7, and 8.
  • the processor 1310 is configured to collect spectrum information of an interference source according to the request of the wireless management device, and send the collected spectrum information of the interference source to the wireless management device;
  • the memory 1310 can also be used to store spectrum information.
  • the processor 1310 is specifically configured to: after receiving a channel switching request message that includes the specified channel that is sent by the wireless management device, switch to the designated channel, and return a channel switching response message to the wireless management device;
  • the spectrum scanning request message sent by the wireless management device is preset to start a scanning time, and sends a spectrum scanning request message carrying the startup scanning time information to other access point devices, and starts spectrum scanning according to the startup scanning time.
  • the processor 1310 may send a spectrum scan request carrying the startup scan time information to other access point devices by using a broadcast frame; or sending the start scan time by using a multicast frame transmission
  • the spectrum scanning request of the information is sent to other access point devices;
  • the startup scanning time is a relative time, and the primary access point device may send the spectrum scanning request to the slave access point devices after the startup scanning time Start scanning, and each slave access point device will receive the primary access point device After requesting the spectral scan start the scan start time to start scanning.
  • it can be ensured that the primary access point device and each of the secondary access point devices start scanning at the same time, thereby scanning the pulse signals of the same time period.
  • the processor 1310 is specifically configured to: after receiving a channel switching request message that includes the specified channel that is sent by the wireless management device, switch to the designated channel, and return a channel switching response message to the wireless management device;
  • the spectrum scanning request message sent by the wireless management device including the start scan timestamp, starts spectrum scanning according to the startup scan timestamp, and collects spectrum information of the interference source.
  • the method and system provided by the present invention utilize overlapping matching features, have high accuracy for identification of interference sources, and are simple and easy to implement, and do not have normal wireless in the process of identification.
  • the access service is affected, the time collected by each access point device is almost synchronized, which solves the problem that the time collected by each access point device is inconsistent in the prior art, and the signal characteristics in different time periods are greatly different.
  • the recognition results may be plagued by inaccuracies. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明提供一种干扰收集和识别的方法、设备及系统,应用于包含有无线管理设备和至少两个接入点设备的无线通信网络中,所述方法令各接入点设备收集频谱信息,以确定至少两个接入点设备收集的属于相同干扰类型的频谱信息的干扰源,并从至少两个接入点设备收集的频谱信息中提取属于相同干扰类型的频谱信息;对干扰源的特征序列进行匹配,计算重叠特征的匹配值,以此判断匹配值是否大于预设阈值,若大于所述预设阈值则确定是相同干扰源,若不大于所述预设阈值则确定为不同干扰源。本发明提供的干扰收集和识别的方法、设备及系统利用了重叠特征匹配的方式,针对干扰源的识别具有较高的准确性,且方案简单易于实现。

Description

一种干扰收集和识别的方法、 设备及系统 技术领域
本发明涉及无线通信领域, 特别是涉及一种干扰收集和识别的方法、 设备及系统。 背景技术
随着各项无线通信技术的发展以及无线保真度 (Wireless-Fidelity, 简称 WIFI)设备的不 断普及和迅速增长, 带来无线局域网 (Wireless Local Area Network, 简称 WLAN) 应用的迅 猛发展。 包括个人家庭、 企业园区办公、 教育医疗机构等多类 WLAN的部署和发展, 在对基 础无线网络需求膨胀的同时, 也带来了 WLAN服务需求和用户体验的提升需求, 但是也引入 了一些新的问题, 特别是不兼容或兼容较弱的无线设备的广泛使用, 使得 WLAN环境受到了 很大的干扰。 干扰会影响无线接入点与客户端之间的吞吐量, 甚至会导致客户端业务中断。 当干扰对 WLAN环境的正常业务有影响时, 快速准确地获得干扰设备的位置信息, 尽快避免 和减少干扰的影响, 变得尤为重要。 为了实现干扰的定位, 需要在多个检测点获取干扰源信 息, 通过一定的方法来确定其位置。 多个检测点检测到干扰信号之后, 如何确认多个检测点 检测到的干扰信号是同一干扰源发出的, 这是无线定位技术中需要解决的一个关键的问题。
现有通过多个接入点设备检测并识别同一个干扰源的技术中, 干扰源发出干扰信号后, 各个接入点设备接收、 采集和分析干扰信号, 信号分析后得到的各种特征信息称为伪 MAC (媒体访问控制, Media Access Control) 地址 (Pseudo MAC, 简称 PMAC), PMAC中包括 频谱信息和其它的一些信息, 其中, 频谱信息包括中心频率、 带宽、 脉冲周期等, 其他信息 包括设备标识、 模拟特征等, 设备标识是需要对数据进行解码后才能获取的。 然后各接入点 设备将干扰源的 PMAC数据上报给无线控制器 (Access Controller, 简称 AC) , 无线控制器 通过预定的规则比较 PMAC数据, 将比较相似的 PMAC数据分为一个簇 (Cluster), 随着一 段时间上报的多组 PMAC数据的比较, 经过簇的合并或分割, 最后, 每个簇的 PMAC数据 可以识别为同一干扰源的。
上述识别同一干扰源的方法虽然在一定程度上解决了干扰源识别的问题, 但是, 上述方 法也存在一些问题: 一方面, PMAC生成比较复杂, 不仅需要频谱分析, 还需要对数据进行 解码等,对检测设备的要求较高; 另一方面, 由于无线环境复杂,根据频谱信息生成的 PMAC 准确率难以保证。 发明内容
有鉴于此, 本发明提供一种干扰收集和识别的方法、 设备及系统, 用于解决现有技术中 针对无线网络中干扰源的干扰识别方法复杂以及识别准确率低等问题。
第一方面, 本发明提供一种干扰识别的方法, 应用于包含有无线管理设备及至少两个接 入点设备的无线通信网络中, 所述干扰识别方法包括: 请求所述至少两个接入点设备分别收 集干扰源的频谱信息; 从所述至少两个接入点设备接收收集的干扰源的频谱信息, 确定所述 至少两个接入点设备收集的频谱信息中有属于相同设备类型的干扰源的频谱信息; 从所述至 少两个接入点设备收集的频谱信息中分别提取所述的属于相同设备类型的干扰源的频谱信息; 匹配所述分别提取的属于相同设备类型的干扰源的频谱信息中位于同一时间段内的特征序列, 计算所述的位于同一时间段内的特征序列的匹配值; 判断所述匹配值是否大于预设阈值, 若 大于所述预设阈值, 则确定所述分别提取的属于相同设备类型的干扰源的频谱信息来自同一 干扰源, 若不大于所述预设阈值, 则确定为所述分别提取的属于相同设备类型的干扰源的频 谱信息来自不同干扰源。
在第一方面的第一种可能实现方式中, 所述的请求所述至少两个接入点设备分别收集干 扰源的频谱信息具体包括: 向所述至少两个接入点设备中每个接入点设备发送包含有指定信 道的信道切换请求消息, 通知所述至少两个接入点设备切换到所述指定信道; 接收所述至少 两个接入点设备中每个接入点设备返回的信道切换响应消息; 从所述至少两个接入点设备中 确定一个主接入点设备, 并确定所述至少两个接入点设备中除所述主接入点设备之外的接入 点设备为从接入点设备, 并向所述主接入点设备发送频谱扫描请求消息, 令所述主接入点设 备向各从接入点设备发送携带有启动扫描时间的信息的频谱扫描请求消息。
其中, 从所述至少两个接入点设备中确定一个主接入点设备, 并确定所述至少两个接入 点设备中除所述主接入点设备之外的接入点设备为从接入点设备具体包括: 比较所述至少两 个接入点设备中每个接入点设备上报的干扰值, 选择干扰值最大的一个接入点设备作为主接 入点设备, 其他则为从接入点设备。
其中, 令所述主接入点设备向各从接入点设备发送携带有所述启动扫描时间的信息的频 谱扫描请求消息具体包括: 令所述主接入点设备通过广播帧发送携带有所述启动扫描时间信 息的频谱扫描请求消息给各从接入点设备; 或者,
预先将所述主接入点设备及各从接入点设备设置为一组播组或者预先配置一组播地址, 并令所述主接入点设备通过组播帧发送携带有所述启动扫描时间信息的频谱扫描请求消息给 各从接入点设备。
在第一方面的第二种可能实现方式中, 所述请求至少两个接入点设备分别收集干扰源的 频谱信息具体包括: 向所述至少两个接入点设备中每个接入点设备发送包含有指定信道的信 道切换请求消息, 通知所述至少两个接入点设备切换到所述指定信道; 接收所述至少两个接 入点设备中每个接入点设备返回的信道切换响应消息; 向所述至少两个接入点设备中每个接 入点设备发送频谱扫描请求消息, 所述频谱扫描请求消息中包括启动扫描时间戳, 以使所述 至少两个接入点设备中每个接入点设备依据所述启动扫描时间戳启动频谱扫描, 收集干扰源 的频谱信息。
其中, 在向所述至少两个接入点设备中每个接入点设备发送频谱扫描请求消息之前, 还 包括: 判断所述至少两个接入点设备的响应时间是否同步, 若所述至少两个接入点设备的响 应时间同步, 则向所述至少两个接入点设备中每个接入点设备发送的频谱扫描请求消息中包 括的启动扫描时间戳相同, 若所述至少两个接入点设备的响应时间不同步, 则向所述至少两 个接入点设备中每个接入点设备发送的频谱扫描请求消息中包括的启动扫描时间戳不同。
于本发明干扰识别方法中, 所述频谱信息包括快速傅氏变换 FFT数据、 起至时间、 及采 样时间中一项或多项;所述特征序列为所述干扰源于一时间段内的频谱特征,包括中心频率、 带宽、 脉冲指纹、 及占空比类型中一个或多个; 所述匹配值为一比率值或为一正整数; 所述 预设阈值为一比率值或一正整数。
第二方面, 本发明还提供一种干扰收集的方法, 应用于包含有无线管理设备及至少两个 接入点设备的无线通信网络中, 所述干扰收集方法包括: 依据所述无线管理设备的请求收集 干扰源的频谱信息; 将收集的干扰源的频谱信息发送给所述无线管理设备。
在第二方面的第一种可能实现方式中, 所述的依据所述无线管理设备的请求收集干扰源 的频谱信息具体包括: 接收所述无线管理设备发送的包含有指定信道的信道切换请求消息, 切换到所述指定信道, 并返回信道切换响应消息给所述无线管理设备; 接收所述无线管理设 备发送的频谱扫描请求消息后, 预设一启动扫描时间, 发送携带有所述启动扫描时间信息的 频谱扫描请求消息给其他接入点设备, 并依据所述启动扫描时间启动频谱扫描, 收集干扰源 的频谱信息。
其中, 所述发送携带有所述启动扫描时间信息的频谱扫描请求消息给其他接入点设备具 体为: 通过广播帧或者组播帧发送携带有所述启动扫描时间信息的频谱扫描请求消息给其他 接入点设备。
在第二方面的第二种可能实现方式中, 所述的依据所述无线管理设备的请求收集干扰源 的频谱信息具体包括: 接收到所述无线管理设备发送的包含有指定信道的信道切换请求消息 后切换到所述指定信道, 并返回信道切换响应消息给所述无线管理设备; 接收所述无线管理 设备发送的包括启动扫描时间戳的频谱扫描请求消息, 依据所述启动扫描时间戳启动频谱扫 描, 收集干扰源的频谱信息。
第三方面, 本发明还提供一种无线管理设备, 包括: 请求模块, 用于向至少两个接入点 设备分别发送收集干扰源的频谱信息的请求; 提取模块, 用于从所述至少两个接入点设备接 收收集的干扰源的频谱信息, 当确定所述至少两个接入点设备收集的频谱信息中有属于相同 设备类型的干扰源的频谱信息, 并从所述至少两个接入点设备收集的频谱信息中分别提取所 述的属于相同设备类型的干扰源的频谱信息; 匹配模块, 用于匹配所述分别提取的属于相同 设备类型的干扰源的频谱信息中位于同一时间段内的特征序列, 计算所述的位于同一时间段 内的特征序列的匹配值; 识别模块, 用于判断所述匹配值是否大于预设阈值, 若大于所述预 设阈值, 则确定所述分别提取的属于相同设备类型的干扰源的频谱信息来自同一干扰源, 若 不大于所述预设阈值, 则确定为所述分别提取的属于相同设备类型的干扰源的频谱信息来自 不同干扰源。
在第三方面的第一种可能实现方式中, 所述请求模块包括: 信道切换单元, 用于向所述 至少两个接入点设备发送包含有指定信道的信道切换请求消息, 通知所述至少两个接入点设 备切换到所述指定信道, 并接收所述至少两个接入点设备中每个接入点设备返回的信道切换 响应消息; 扫描请求单元, 用于从所述至少两个接入点设备中确定一个主接入点设备, 并确 定所述至少两个接入点设备中除所述主接入点设备之外的接入点设备为从接入点设备, 并向 所述主接入点设备发送频谱扫描请求消息, 令所述主接入点设备向各从接入点设备发送携带 有启动扫描时间是的信息的频谱扫描请求。
其中, 所述扫描请求单元从所述至少两个接入点设备中确定一个主接入点设备, 并确定 所述至少两个接入点设备中除所述主接入点设备之外的接入点设备为从接入点设备具体包括: 比较所述至少两个接入点设备中每个接入点设备上报的干扰值, 选择干扰值最大的一个接入 点设备作为主接入点设备, 其他则为从接入点设备。
其中, 所述扫描请求单元令所述主接入点设备向各从接入点设备发送携带有所述启动扫 描时间是的信息的频谱扫描请求包括: 令所述主接入点设备通过广播帧发送携带有所述启动 扫描时间信息的频谱扫描请求消息给各从接入点设备, 或者, 所述扫描请求单元预先将所述 主接入点设备及各从接入点设备设置为一组播组或者预先配置一组播地址, 并令所述主接入 点设备通过组播帧发送携带有所述启动扫描时间信息的频谱扫描请求消息给各从接入点设备。
在第三方面的第二种可能实现方式中, 所述请求模块包括: 信道切换单元, 用于向所述 至少两个接入点设备中每个接入点设备发送包含有指定信道的信道切换请求消息, 通知所述 至少两个接入点设备切换到所述指定信道, 并接收所述至少两个接入点设备中每个接入点设 备返回的信道切换响应消息; 扫描请求单元, 用于向所述至少两个接入点设备中每个接入点 设备发送频谱扫描请求消息, 所述频谱扫描请求消息中包括启动扫描时间戳, 以使所述至少 两个接入点设备中每个接入点设备依据所述启动扫描时间戳启动频谱扫描, 收集干扰源的频 谱信息。
其中, 所述扫描请求单元还用于判断所述至少两个接入点设备的响应时间是否同步, 若 所述至少两个接入点设备的响应时间同步, 则向所述至少两个接入点设备中每个接入点设备 发送的频谱扫描请求消息中包括的启动扫描时间戳相同, 若所述至少两个接入点设备的响应 时间不同步, 则向所述至少两个接入点设备中每个接入点设备发送的频谱扫描请求消息中包 括的启动扫描时间戳不同。
于本发明的无线管理设备中, 所述频谱信息包括快速傅氏变换 FFT数据、 起至时间、 及 采样时间中一项或多项; 所述特征序列为所述干扰源于一时间段内的频谱特征, 包括中心频 率、 带宽、 脉冲指纹、 及占空比类型中一个或多个; 所述匹配值为一比率值或为一正整数; 所述预设阈值为一比率值或一正整数。
第四方面, 本发明还提供一种接入点设备, 包括: 收集模块, 用于依据无线管理设备的 请求收集干扰源的频谱信息; 以及发送模块, 用于将所述收集模块收集的干扰源的频谱信息 发送给所述无线管理设备。
在第四方面的第一种可能实现方式中, 所述收集模块具体用于接收所述无线管理设备发 送的包含有指定信道的信道切换请求消息, 并切换到所述指定信道; 接收所述无线管理设备 发送的频谱扫描请求消息, 预设一启动扫描时间, 发送携带有所述启动扫描时间信息的频谱 扫描请求消息给其他接入点设备, 并依据所述启动扫描时间启动频谱扫描, 收集干扰源的频 谱信息。
所述收集模块具体通过广播帧或组播帧发送携带有所述启动扫描时间信息的频谱扫描请 求消息给其他接入点设备。
在第四方面的第二种可能实现方式中, 所述收集模块具体用于接收所述无线管理设备发 送的包含有指定信道的信道切换请求消息, 并切换到所述指定信道; 接收所述无线管理设备 发送的包括启动扫描时间戳的频谱扫描请求消息, 依据所述启动扫描时间戳启动频谱扫描, 收集干扰源的频谱信息。
第五方面, 本发明提供一种干扰收集和识别的系统, 包括上述第三方面或第三方面任一 种可能实现方式所述的无线管理设备, 和至少两个接入点设备;
所述至少两个接入点设备, 用于收集干扰源的频谱信息, 并将收集的干扰源的频谱信息 发送给所述无线管理设备。
如上所述, 本发明的干扰识别方法、 设备及系统, 具有以下有益效果: 本发明利用了重叠特征匹配的方式, 针对干扰源的识别具有较高的准确性, 且方案简单 易于实现, 同时在识别的过程中不会对正常的无线接入业务造成影响, 由于各接入点设备采 集的时间几乎达到了同步, 进而解决了现有技术中各接入点设备采集的时间不一致, 在不同 时间段的信号特征差异很大而导致识别结果不准确的问题。 附图说明
图 1显示为本发明实施例提供的一种干扰收集和识别的系统的结构示意图。
图 2显示为本发明实施例提供的一种干扰识别的方法的流程示意图。
图 3显示为本发明实施例提供的重叠特征原理示意图。
图 4显示为本发明实施例提供的另一种干扰识别的方法的流程示意图。
图 5显示为本发明实施例提供的再一种干扰识别的方法的流程示意图。
图 6显示为本发明实施例提供的一种干扰收集的方法的流程示意图。
图 7显示为本发明实施例提供的另一种干扰收集的方法的流程示意图。
图 8显示为本发明实施例提供的再一种干扰收集的方法的流程示意图。
图 9显示为本发明实施例提供的无线管理设备的原理框图。
图 10显示为本发明实施例提供的无线管理设备中请求模块的原理框图。
图 11显示为本发明实施例提供的接入点设备的原理框图。
图 12显示为本发明实施例提供的一种无线管理设备的结构示意图。
图 13显示为本发明实施例提供的一种接入点设备的结构示意图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本发明实施例中的附 图, 对本发明实施例中的技术方案进行清楚、 完整地描述, 显然, 所描述的实施例是本发明 一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有 作出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
需要说明的是, 本实施例中所提供的图示仅以示意方式说明本发明的基本构想, 遂图式 中仅显示与本发明中有关的组件而非按照实际实施时的组件数目、 形状及尺寸绘制, 其实际 实施时各组件的型态、数量及比例可为一种随意的改变,且其组件布局型态也可能更为复杂。
本发明提供的干扰收集和识别的方法、 设备和系统, 应用于包括无线管理设备、 至少两 个接入点设备的无线通信网络中。 所述无线管理设备用于控制所述至少两个接入点设备以收 集干扰源的频谱信息, 以确定至少两个接入点设备收集的属于相同干扰类型的频谱信息的干 扰源, 并从至少两个接入点设备收集的频谱信息中提取属于相同干扰类型的频谱信息; 对干 扰源的特征序列进行匹配, 计算重叠特征的匹配值, 以此判断匹配值是否大于预设阈值, 若 大于所述预设阈值则确定是相同干扰源, 若不大于所述预设阈值则确定为不同干扰源, 从而 实现干扰识别; 所述无线管理设备可以为无线控制器 AC, 或者网管设备, 或者用于频谱分析 的干扰识别设备。 如果所述无线管理设备是网管设备或用于频谱分析的干扰识别设备, 则所 述无线管理设备可以直接向各个接入点设备下发命令, 也可以通接入控制器 AC 向各个接入 点设备下发命令, 使接入点设备收集干扰源的频谱信息。 所述至少两个接入点设备用于收集 干扰源的频谱信息, 可以为无线路由器、 无线网关、 或者无线交换机。
其中, 干扰源为待检测识别的干扰设备, 可以是符合 WLAN标准协议的标准设备, 例如 WIFI终端, 蓝牙 (Bluetooth) 等, 也可以是不符合 WLAN标准协议的设备, 例如微波炉、 模拟设备、 使用专有协议的无绳电话等。
本发明提供的干扰收集和识别的方法、 设备及系统利用了重叠特征匹配的方式, 针对干 扰源的识别具有较高的准确性, 且方案简单易于实现。 请参阅图 1, 显示为本发明实施例提供的一种干扰收集和识别的系统的结构示意图, 如 图 1所示, 所述干扰收集和识别的系统包括: 无线管理设备 30、 三个接入点设备 31a、 31b、 31c和干扰源 20。
所述三个接入点设备 31a、 31b、 31c用于收集干扰源的频谱信息。
所述无线管理设备 30用于请求所述三个接入点设备 31a、 31b、 31c分别收集干扰源的频 谱信息; 确定所述的三个接入点设备 31a、 31b、 31c是否收集有属于相同设备类型的干扰源 的频谱信息, 当确定所述三个接入点设备 31a、 31b、 31c收集的频谱信息中存在属于相同设 备类型的干扰源的频谱信息时, 则从所述的三个接入点设备 31a、 31b、 31c收集的频谱信息 中分别提取所述的属于相同设备类型的干扰源 20的频谱信息,匹配上述分别提取的属于相同 设备类型的干扰源的频谱信息中位于同一时间段内的特征序列, 计算所述的位于同一时间段 内的特征序列的重叠特征匹配值, 判断所述重叠特征匹配值是否大于预设阈值, 若大于所述 预设阈值则确定所述分别提取的属于相同设备类型的干扰源的频谱信息来自同一干扰源, 若 不大于所述预设阈值则确定为所述的至少两组频谱信息来自不同干扰源。
需要说明的是, 图 1所示的干扰收集和识别的系统架构仅为一种示意, 实际的网络系统 中可能仅包括两个接入点设备, 也可能除所述三个接入点设备 31a、 31b、 31c外还包括更多 个接入点设备; 可能只包括一个干扰源 20, 也可能包括两个甚至更多个干扰源。 请参阅图 2, 为本发明实施例提供的一种干扰识别的方法的流程示意图, 应用于包括无 线管理设备和至少两个接入点设备的无线通信网络中,例如图 1所示的系统中;如图 2所示, 所述干扰识别方法包括:
100: 请求所述至少两个接入点设备分别收集干扰源的频谱信息;
在本实施例中,无线管理设备请求所述至少两个接入点设备分别收集干扰源的频谱信息; 具体地,无线管理设备可以通过集中式控制所述至少两个接入点设备收集干扰源的频谱信息, 即直接向每个接入点设备发送请求; 无线管理设备也可以通过主从式控制所述至少两个接入 点设备收集干扰源的频谱信息, 即从所述至少两个接入点设备中确定一个主接入点设备, 向 主接入点设备发送请求, 再通过主接入点设备向从接入点设备发送请求; 如图 1所示的系统 中, 无线管理设备 30请求三个接入点设备 31a、 31b、 31c收集干扰源 20的频谱信息。
101: 从所述至少两个接入点设备接收收集的干扰源的频谱信息, 确定所述至少两个接入 点设备收集的频谱信息中有属于相同设备类型的干扰源的频谱信息;
在本实施例中, 所述无线管理设备判断所述至少两个接入点设备是否收集有属于相同设 备类型的干扰源的频谱信息, 以确定所述至少两个接入点设备收集的频谱信息中有属于相同 设备类型的干扰源的频谱信息; 具体地, 如图 1所示的系统中, 无线管理设备 30判断所述三 个接入点设备 31a、 31b、 31c是否收集有属于相同设备类型的干扰源的频谱信息, 确定所述 三个接入点设备 31a、 31b、 31c收集的频谱信息中有属于相同设备类型的干扰源的频谱信息。
102:从所述至少两个接入点设备收集的频谱信息中分别提取所述的属于相同设备类型的 干扰源的频谱信息;
在本实施例中, 所述无线管理设备从所述至少两个接入点设备收集的频谱信息中分别提 取所述的属于相同设备类型的干扰源的频谱信息。 具体地, 如图 1所示的系统中, 无线管理 设备 30从所述三个接入点设备 31a、 31b、 31c收集的频谱信息中分别提取所述的属于相同设 备类型的干扰源的频谱信息。 所述频谱信息包括快速傅氏变换 FFT数据, 起至时间, 及采样 时间等一项或多项。
103:匹配所述分别提取的属于相同设备类型的干扰源的频谱信息中位于同一时间段内的 特征序列, 计算所述的位于同一时间段内的特征序列的重叠特征匹配值;
在本实施例中, 所述无线管理设备将上述分别提取的属于相同设备类型的干扰源的频谱 信息中位于同一时间段内的特征序列进行匹配, 并计算得到所述位于同一时间段内的特征序 列的重叠特征匹配值。
所述特征序列可以理解为干扰源在一个时间段内的频谱特征, 包括中心频率、 带宽、 脉 冲指纹、 及占空比类型中一个或多个特征。 104: 判断所述重叠特征匹配值是否大于预设阈值, 若大于所述预设阈值, 则确定所述分 别提取的属于相同设备类型的干扰源的频谱信息来自同一干扰源, 若不大于所述预设阈值, 则确定为所述分别提取的属于相同设备类型的干扰源的频谱信息来自不同干扰源;
在本实施例中, 无线管理判断上述计算得到的重叠特征匹配值是否大于预设阈值; 若大 于所述预设阈值, 则确定所述分别提取的属于相同设备类型的干扰源的频谱信息来自同一干 扰源; 若不大于所述预设阈值, 则确定为所述分别提取的属于相同设备类型的干扰源的频谱 信息来自不同干扰源。
所述重叠特征为至少两个接入点设备分别提取的属于相同设备类型的干扰源的频谱信息 中位于同一时间段内的特征序列中相同的或者相似的特征。 参阅图 3, 显示为本发明实施例 提供的重叠特征原理示意图, 以图 1所示系统中三个接入点设备 31a、 31b、 31c为例, 说明 如何识别重叠特征, 如图 3所示, 匹配三个接入点设备 31a、 31b、 31c—共 3组频谱信息中 位于同一时间段内, 即 T1内的特征序列, 计算重叠特征匹配值。
所述重叠特征匹配值为一比率或为一正整数。 具体地, 所述重叠特征匹配值为重叠特征 的频谱信息占干扰源的所有频谱信息的比率, 即, 至少两个接入点设备分别提取属于相同设 备类型的干扰源的频谱信息中位于同一时间段内的特征序列的频谱信息占所述干扰源的所有 频谱信息的比率; 相应的, 用于判断的预设阈值为一比率值, 可以根据经验值设置对应的预 设阈值, 比如 0.5。 或者, 所述重叠特征匹配值为重叠特征的个数, δΡ, 一个接入点设备提取 的属于相同设备类型的干扰源的频谱信息中连续 2个或 2个以上的特征序列与另一个接入点 设备提取的属于相同设备类型的干扰源的频谱信息中的特征序列相同的特征个数; 相应的, 用于判断的预设阈值为一整数, 例如根据经验值设置对应的阈值, 比如 5。
具体地, 如图 1所示的系统中, 比如干扰源 20为蓝牙, 重叠特征匹配值为重叠特征的频 谱信息占所述干扰源 20的所有频谱信息的比率, 判断的预设阈值为 0.5, 无线管理设备 30匹 配接入点设备 31a、 31b、 31c—共 3组频谱信息中位于同一时间段内的特征序列, 计算出的 重叠特征匹配值为 0.7, 则判断所述匹配值大于预设阈值 0.5, 则确定所述分别提取的属于相 同设备类型的干扰源的频谱信息来自同一干扰源, 换言之, 如果无线管理设备 30匹配接入点 设备 31a、 31b、 31c—共 3组频谱信息中位于同一时间段内的特征序列, 计算出的重叠特征 匹配值为 0.3, 则不大于所述预设阈值 0.5, 则确定为所述分别提取的属于相同设备类型的干 扰源的频谱信息来自不同干扰源。
本实施例提供的干扰识别的方法, 通过匹配至少两个接入点设备分别提取的属于相同设 备类型的干扰源的频谱信息中位于同一时间段内的特征序列中的重叠特征, 针对干扰源的识 别具有较高的准确性, 从而可以解决现有技术中针对无线网络中干扰源的识别方法复杂以及 识别准确率低等问题。 请参阅图 4, 为本发明实施例提供的另一种干扰识别的方法的流程示意图, 需要特别说 明的是, 本识别方法的实施例中, 在图 2所示的干扰识别方法基础上, 仅进一步介绍 100具 体采取主从式控制扫描的干扰识别方法。 如图 4所示, 所述方法包括:
200:向所述至少两个接入点设备中每个接入点设备发送包含有指定信道的信道切换请求 消息, 通知所述至少两个接入点设备切换到所述指定信道; 在本实施例中, 无线管理设备向 所述至少两个接入点设备发送包含有指定信道的信道切换请求消息, 通知所述至少两个接入 点设备切换到所述指定信道; 具体地, 如图 1所示的系统中, 无线管理设备 30向三个接入点 设备 31a、 31b、 31c中每个接入点设备发送包含有指定信道的信道切换请求消息, 通知所述 三个接入点设备 31a、 31b、 31c中每个接入点设备切换到所述指定信道, 需要说明的是, 无 线管理设备 30向三个接入点设备 31a、 31b、 31c中每个接入点设备发送的信道切换请求消息 中携带的指定信道为一个特定的频段, 以使三个接入点设备 31a、 31b、 31c分别切换到该特 定的频段, 确保三个接入点设备 31a、 31b、 31c在同一个信道中与所述无线管理设备 30进行 通信。
201: 接收所述至少两个接入点设备中每个接入点设备返回的信道切换响应消息; 在本实 施例中, 所述至少两个接入点设备切换到所述指定信道后, 所述无线管理设备会收到所述至 少两个接入点设备回复的信道切换响应消息, 并予以确认。 具体地, 如图 1所示的系统中, 三个接入点设备 31a、 31b、 31c切换到所述指定信道之后, 会向无线管理设备 30回复信道切 换响应消息, 无线管理设备 30再向三个接入点设备 31a、 31b、 31c回复确认消息。
202: 从所述至少两个接入点设备中确定一个主接入点设备, 并确定所述至少两个接入点 设备中除所述主接入点设备之外的接入点设备为从接入点设备; 在本实施例中, 所述无线管 理设备从所述至少两个接入点设备中确定一个主接入点设备, 其他, 即所述至少两个接入点 设备中除所述主接入点设备之外的接入点设备为从接入点设备。
具体的, 所述无线管理设备可以比较所述至少两个接入点设备中每个接入点设备上报的 干扰值, 选择干扰值最大的一个接入点设备作为主接入点设备, 其他, 即所述至少两个接入 点设备中除所述主接入点设备之外的接入点设备, 作为从接入点设备, 并将所述主接入点设 备予以标记, 向所述主接入点设备发送标记信息。 换言之, 所述无线管理设备根据干扰严重 程度来确定主接入点设备。
如图 1所示的系统中,无线管理设备 30根据干扰严重程度,从三个接入点设备 31a、31b、 31c中确定接入点设备 31a作为主接入点设备, 其他两个接入点设备 31b、 31c为从接入点设 备; 然后无线管理设备 30向主接入点设备 31a发送频谱扫描请求。
203: 向所述主接入点设备发送频谱扫描请求消息, 并令所述主接入点设备向各从接入点 设备发送携带有启动扫描时间的信息的频谱扫描请求; 在本实施例中, 无线管理设备向所述 主接入点设备发送频谱扫描请求消息, 并令所述主接入点设备向各从接入点设备发送携带有 启动扫描时间的信息的频谱扫描请求, 可选的, 无线管理设备接收所述主接入点设备回复的 频谱扫描响应消息; 具体的, 所述主接入点设备收到无线管理设备发送的频谱扫描请求消息 后, 会预设所述启动扫描时间, 再向各从接入点设备发送携带所述启动扫描时间的信息的频 谱扫描请求; 所述启动扫描时间为一相对时间, 所述主接入点设备会在向各从接入点设备发 送频谱扫描请求开始的所述启动扫描时间后启动扫描, 而各个从接入点设备会在收到主接入 点设备的频谱扫描请求开始的所述启动扫描时间后启动扫描。 基本上可以保证主接入点设备 和各个从接入点设备在同一时间启动扫描, 从而扫描到同一时间段的脉冲信号。
具体地, 如图 1所示的系统中, 无线管理设备 30向所述主接入点设备 31a发送频谱扫描 请求消息, 令所述主接入点设备 31a向两个从接入点设备 31b、 31c发送携带有启动扫描时间 是的信的频谱扫描请求。
于实际的执行过程中, 当主接入点设备 31a收到频谱扫描请求后, 回复频谱扫描响应消 息, 主接入点设备 31a不会立即启动扫描, 会预设一启动扫描时间, 例如 tl, 然后依据启动 扫描的时间, 在发送完频谱扫描请求经过启动扫描的时间 tl后启动扫描, 同时主接入点设备 31a给两个从接入点设备 31b、 31c发送频谱扫描请求中携带该启动扫描时间 tl。 两个从接入 点设备 31b、 31c在收到这个请求后, 设置定时, 在接收到频谱扫描请求经过启动扫描时间 tl 后开始启动扫描, 主接入点设备 31a及从接入点设备 31b、 31c之间的消息是通过无线电磁波 传输, 到达两个从接入点设备 31b、 31c的时间差是纳秒级别, 相对频谱扫描要求的毫秒级别 可忽略不计。 所以, 基本上可以保证所述的三个接入点设备 31a、 31b、 31c在同一时间启动 扫描, 从而扫描到同一时间段的脉冲信号。
向所述主接入点设备发送频谱扫描请求有两种方式可以实现, 一种是无线管理设备令所 述主接入点设备通过广播帧发送携带有所述启动扫描时间信息的频谱扫描请求给各从接入点 设备; 另一种方式是无线管理设备向所述主接入点设备发送频谱扫描请求具体包括: 预先将 所述主接入点设备及各从接入点设备设置为一组播组或者预先配置一组播地址, 并令所述主 接入点设备通过组播帧发送携带有所述启动扫描时间信息的频谱扫描请求给各从接入点设备。
204: 接收所述至少两个接入点设备收集的干扰源的频谱信息, 并确定所述至少两个接入 点设备收集的频谱信息中有属于相同设备类型的干扰源的频谱信息。
在本实施例中, 无线管理设备接收所述至少两个接入点设备, 即所述主接入点设备和各 个从接入点设备依据所述启动扫描时间启动频谱扫描后收集的干扰源的频谱信息; 并确定所 述主接入点设备和各个从接入点设备收集的干扰源的频谱信息中, 是否有属于相同设备类型 的干扰源的频谱信息。 具体参见 101, 此处不再赘述。
205:从所述至少两个接入点设备收集的频谱信息中分别提取所述的属于相同设备类型的 干扰源的频谱信息;
在本实施例中, 所述无线管理设备从所述至少两个接入点设备收集的频谱信息中分别提 取所述的属于相同设备类型的干扰源的频谱信息。 具体参见 102, 此处不再赘述。
206:匹配所述分别提取的属于相同设备类型的干扰源的频谱信息中位于同一时间段内的 特征序列, 计算所述的位于同一时间段内的特征序列的重叠特征匹配值;
在本实施例中, 所述无线管理设备将上述分别提取的属于相同设备类型的干扰源的频谱 信息中位于同一时间段内的特征序列进行匹配, 并计算得到所述位于同一时间段内的特征序 列的重叠特征匹配值。 所述特征序列可以理解为干扰源在一个时间段内的频谱特征, 包括中 心频率、 带宽、脉冲指纹、及占空比类型中一个或多个特征。 具体参见 103, 此处不再赘述。
207: 判断所述重叠特征匹配值是否大于预设阈值, 若大于所述预设阈值, 则确定所述分 别提取的属于相同设备类型的干扰源的频谱信息来自同一干扰源, 若不大于所述预设阈值, 则确定为所述分别提取的属于相同设备类型的干扰源的频谱信息来自不同干扰源;
在本实施例中, 无线管理判断上述计算得到的重叠特征匹配值是否大于预设阈值; 若大 于所述预设阈值, 则确定所述分别提取的属于相同设备类型的干扰源的频谱信息来自同一干 扰源; 若不大于所述预设阈值, 则确定为所述分别提取的属于相同设备类型的干扰源的频谱 信息来自不同干扰源。 具体参见 104, 此处不再赘述。
本实施例中提供的干扰识别方法, 无线管理设备通过确定一个主接入点设备, 采取主从 式控制扫描方式,即由主接入点设备控制从接入点设备在预设的启动扫描时间开始频谱扫描, 保证各个接入点设备之间能获取到一段重叠时间范围内的干扰特征, 进而保证各接入点设备 扫描的是同一时间段的脉冲信号, 基于空口相对时间, 不依赖接入点设备之间时间同步, 采 用主从式控制频谱扫描获得重叠特征, 方案简单容易实现且识别的准确率高。 请参阅图 5, 为本发明实施例提供的再一种干扰识别的方法的流程示意图, 需要特别说 明的是, 本识别方法的实施例中, 在图 2所示的干扰识别方法基础上, 进一步介绍 100具体 采取集中式控制扫描的干扰识别方法。 如图 5所示, 所述方法包括:
300:向所述至少两个接入点设备中每个接入点设备发送包含有指定信道的信道切换请求 消息, 通知所述至少两个接入点设备切换到所述指定信道; 在本实施例中, 无线管理设备向所述至少两个接入点设备发送包含有指定信道的信道切 换请求消息, 通知所述至少两个接入点设备切换到所述指定信道; 具体地, 如图 1所示的系 统中, 无线管理设备 30向三个接入点设备 31a、 31b、 31c中每个接入点设备发送包含有指定 信道的信道切换请求消息, 通知所述三个接入点设备 31a、 31b、 31c中每个接入点设备切换 到所述指定信道, 需要说明的是, 无线管理设备 30向三个接入点设备 31a、 31b、 31c中每个 接入点设备发送的信道切换请求消息中携带的指定信道为一个特定的频段, 以使三个接入点 设备 31a、 31b、 31c分别切换到该特定的频段, 确保三个接入点设备 31a、 31b、 31c在同一 个信道中与所述无线管理设备 30进行通信。
301: 接收所述至少两个接入点设备中每个接入点设备返回的信道切换响应消息; 在本实施例中, 所述至少两个接入点设备切换到所述指定信道后, 所述无线管理设备会 收到所述至少两个接入点设备回复的信道切换响应消息, 并予以确认。 具体地, 如图 1所示 的系统中, 三个接入点设备 31a、 31b、 31c切换到所述指定信道之后, 会向无线管理设备 30 回复信道切换响应消息,无线管理设备 30再向三个接入点设备 31a、31b、31c回复确认消息。
302: 向所述至少两个接入点设备中每个接入点设备发送频谱扫描请求消息, 所述频谱扫 描请求消息中包括启动扫描时间戳, 以使所述至少两个接入点设备中每个接入点设备依据所 述启动扫描时间戳启动频谱扫描, 收集干扰源的频谱信息。
具体地, 无线管理设备在向所述至少两个接入点设备中每个接入点设备发送频谱扫描请 求消息之前, 需要判断所述至少两个接入点设备的响应时间是否同步, 若所述至少两个接入 点设备的响应时间同步, 则向所述至少两个接入点设备中每个接入点设备发送的频谱扫描请 求消息中包括的启动扫描时间戳相同, 若所述至少两个接入点设备的响应时间不同步, 则向 所述至少两个接入点设备中每个接入点设备发送的频谱扫描请求消息中包括的启动扫描时间 戳不同。
具体地, 如图 1 所示的系统中, 无线管理设备在向所述三个接入点设备 31a、 31b、 31c 发送频谱扫描请求消息之前, 需要判断所述三个接入点设备 31a、 31b、 31c的响应时间是否 同步,若所述三个接入点设备 31a、31b、31c的响应时间同步,则向所述三个接入点设备 31a、 31b、31c发送的频谱扫描请求消息中包括的启动扫描时间戳相同,若所述三个接入点设备 31a、 31b、 31c的响应时间不同步, 则向所述三个接入点设备 31a、 31b、 31c发送的频谱扫描请求 中包括的启动扫描时间戳不同。
303: 从所述至少两个接入点设备接收收集的干扰源的频谱信息, 确定所述至少两个接入 点设备收集的频谱信息中有属于相同设备类型的干扰源的频谱信息;
所述无线管理设备从所述至少两个接入点设备接收收集的干扰源的频谱信息, 确定所述 至少两个接入点设备收集的频谱信息中有属于相同设备类型的干扰源的频谱信息; 具体参见 101, 此处不再赘述。
304:从所述至少两个接入点设备收集的频谱信息中分别提取所述的属于相同设备类型的 干扰源的频谱信息;
在本实施例中, 所述无线管理设备从所述至少两个接入点设备收集的频谱信息中分别提 取所述的属于相同设备类型的干扰源的频谱信息。 具体参见 102, 此处不再赘述。
305:匹配所述分别提取的属于相同设备类型的干扰源的频谱信息中位于同一时间段内的 特征序列, 计算所述的位于同一时间段内的特征序列的重叠特征匹配值;
在本实施例中, 所述无线管理设备将上述分别提取的属于相同设备类型的干扰源的频谱 信息中位于同一时间段内的特征序列进行匹配, 并计算得到所述位于同一时间段内的特征序 列的重叠特征匹配值。 所述特征序列可以理解为干扰源在一个时间段内的频谱特征, 包括中 心频率、 带宽、脉冲指纹、及占空比类型中一个或多个特征。 具体参见 103, 此处不再赘述。
306: 判断所述重叠特征匹配值是否大于预设阈值, 若大于所述预设阈值, 则确定所述分 别提取的属于相同设备类型的干扰源的频谱信息来自同一干扰源, 若不大于所述预设阈值, 则确定为所述分别提取的属于相同设备类型的干扰源的频谱信息来自不同干扰源;
在本实施例中, 无线管理判断上述计算得到的重叠特征匹配值是否大于预设阈值; 若大 于所述预设阈值, 则确定所述分别提取的属于相同设备类型的干扰源的频谱信息来自同一干 扰源; 若不大于所述预设阈值, 则确定为所述分别提取的属于相同设备类型的干扰源的频谱 信息来自不同干扰源。 具体参见 104, 此处不再赘述。
本实施例中提供的干扰识别方法, 无线管理设备集中向所述至少两个接入点设备中每个 接入点设备发送包括启动扫描时间戳的频谱扫描请求后, 所述至少两个接入点设备根据启动 扫描时间戳同时启动频谱扫描, 达到同步收集干扰源的频谱信息的目的, 由于各接入点设备 采集的时间几乎达到了同步, 进而解决了现有技术中各接入点设备采集的时间不一致, 在不 同时间段的信号特征差异很大而导致识别结果不准确的问题。 请参阅图 6, 为本发明实施例提供的一种干扰收集的方法的流程示意图, 应用于包括无 线管理设备和至少两个接入点设备的无线通信网络中, 所述无线通信网络可以是如图 1所示 的系统; 如图 6所示, 所述干扰收集方法包括:
400: 依据所述无线管理设备的请求收集干扰源的频谱信息; 接入点设备依据所述无线管 理设备的请求收集干扰源的频谱信息, 具体地, 如图 1所示的系统中, 三个接入点设备 31a、 31b、 31c依据所述无线管理设备 30的请求收集干扰源 20的频谱信息。 401: 将收集的干扰源的频谱信息发送给所述无线管理设备。接入点设备将收集的干扰源 的频谱信息发送给所述无线管理设备。具体地, 如图 1所示的系统中, 三个接入点设备 31a、 31b、 31c分别将收集的干扰源 20的频谱信息发送给所述无线管理设备 30。 请参阅图 7, 为本发明实施例提供的另一种干扰收集的方法的流程示意图, 需要特别说 明的是, 本收集方法的实施例中, 在图 6所示的干扰收集方法基础上, 仅进一步介绍 400具 体采取主从式控制扫描的干扰收集方法, 当采用主从式控制扫描时, 所述无线管理设备会从 所述至少两个接入点设备中确定一个主接入点设备, 并确定所述至少两个接入点设备中除所 述主接入点设备之外的接入点设备为从接入点设备。 如图 7所示, 所述方法包括:
500:接收到所述无线管理设备发送的包含有指定信道的信道切换请求消息后切换到所述 指定信道, 并返回响应消息给所述无线管理设备; 具体的, 所述至少两个接入点设备中每个 接入点设备接收到所述无线管理设备发送的包含有指定信道的信道切换请求消息后切换到所 述指定信道, 并返回响应消息给所述无线管理设备; 如图 1所示的系统中, 无线管理设备 30 向三个接入点设备 31a、 31b、 31c分别发送包含有指定信道的信道切换请求消息, 通知所述 三个接入点设备 31a、 31b、 31c中每个接入点设备切换到指定信道, 需要说明的是, 无线管 理设备 30向三个接入点设备 31a、 31b、 31c中每个接入点设备发送的信道切换请求消息中携 带的指定信道为一个特定的频段, 以使三个接入点设备 31a、 31b、 31c分别切换到该特定的 频段,确保三个接入点设备 31a、31b、31c在同一个信道中与所述无线管理设备 30进行通信, 并返回响应消息给所述无线管理设备 30, 即三个接入点设备 31a、 31b、 31c切换到该指定信 道之后, 会向无线管理设备 30回复信道切换响应消息, 无线管理设备 30再向三个接入点设 备 31a、 31b、 31c回复确认消息。
然后, 所述无线管理设备会从所述至少两个接入点设备中确定一个主接入点设备, 并确 定所述至少两个接入点设备中除所述主接入点设备之外的接入点设备为从接入点设备, 并向 所述主接入点设备发送频谱扫描请求消息; 具体的, 所述无线管理设备可以比较所述至少两 个接入点设备中每个接入点设备上报的干扰值, 选择干扰值最大的一个接入点设备作为主接 入点设备, 其他, 即所述至少两个接入点设备中除所述主接入点设备之外的接入点设备作为 从接入点设备, 并将所述主接入点设备予以标记, 向所述主接入点设备发送标记信息。 换言 之, 所述无线管理设备根据干扰严重程度来确定主接入点设备。 如图 1所示的系统中, 无线 管理设备 30根据干扰严重程度, 从三个接入点设备 31a、 31b、 31c中确定接入点设备 31a作 为主接入点设备, 其他两个接入点设备 31b、 31c为从接入点设备。
501: 接收所述无线管理设备发送的频谱扫描请求消息后, 回复频谱扫描响应消息; 具体 地, 所述至少两个接入点设备中主接入点设备接收所述无线管理设备发送的频谱扫描请求后 回复频谱扫描响应消息; 即如图 1所示的系统中, 无线管理设备 30在向主接入点设备 31a发 送频谱扫描请求之后, 接收主接入点设备 31a回复的频谱扫描响应消息。
502: 预设一启动扫描时间, 发送携带有所述启动扫描时间信息的频谱扫描请求消息给其 他接入点设备; 具体地, 所述主接入点设备收到所述无线管理设备的频谱扫描请求消息后, 预设一启动扫描时间, 然后向所述各个从接入点设备发送携带有所述启动扫描时间信息的频 谱扫描请求, 控制从接入点设备在预设的启动扫描时间开始频谱扫描。 其中, 所述启动扫描 时间为一相对时间, 所述主接入点设备会在向各从接入点设备发送频谱扫描请求后的所述启 动扫描时间后启动扫描, 而各个从接入点设备会在收到主接入点设备的频谱扫描请求后的所 述启动扫描时间后启动扫描。 基本上可以保证主接入点设备和各个从接入点设备在同一时间 启动扫描, 从而扫描到同一时间段的脉冲信号。
503: 依据所述启动扫描时间启动频谱扫描, 收集所述干扰源的频谱信息。 具体地, 所述 主接入点设备依据所述启动扫描时间启动频谱扫描,收集干扰源的频谱信息。可以理解的是, 所述至少两个接入点设备中的每个从接入点设备也会依据所述启动扫描时间启动频谱扫描, 收集干扰源的频谱信息。
于实际的执行过程中, 当主接入点设备 31a收到频谱扫描请求后, 回复频谱扫描响应消 息, 主接入点设备 31a不会立即启动扫描, 会预设一启动扫描时间, 例如 tl, 然后依据启动 扫描的时间, 在发送完频谱扫描请求经过启动扫描的时间 tl后启动扫描, 同时主接入点设备 31a给两个从接入点设备 31b、 31c发送频谱扫描请求, 同时携带该启动扫描的时间 tl。 两个 从接入点设备 31b、 31c在收到这个请求后, 设置定时, 在接收到频谱扫描请求经过启动扫描 的时间 tl后开始启动扫描, 主接入点设备 31a及从接入点设备 31b、 31c之间的消息是通过 无线电磁波传输, 到达两个从接入点设备 31b、 31c的时间差是纳秒级别, 相对频谱扫描要求 的毫秒级别可忽略不计。 所以, 基本上是可以保证所述的三个接入点设备 31a、 31b、 31c在 同一时间启动扫描, 从而扫描到同一时间段的脉冲信号。
主接入点设备发送携带有所述启动扫描时间信息的频谱扫描请求给其他接入点设备的方 式有两种, 一种为通过广播帧发送携带有所述启动扫描时间信息的频谱扫描请求给其他接入 点设备; 另一种通过组播帧发送携带有所述启动扫描时间信息的频谱扫描请求给其他接入点 设备。
504: 将收集的干扰源的频谱信息发送给所述无线管理设备; 所述至少两个接入点设备将 收集的所述干扰源的频谱信息发送给所述无线管理设备。 具体地, 如图 1所示的系统中, 三 个接入点设备 31a、31b、31c将收集的所述干扰源 20的频谱信息发送给所述无线管理设备 30。 本实施例中提供的干扰收集方法, 通过确定一个主接入点设备, 采取主从式控制扫描方 式, 即由主接入点设备控制从接入点设备在预设的启动扫描时间开始频谱扫描, 保证各个接 入点设备之间能获取到一段重叠时间范围内的干扰特征, 进而保证各接入点设备扫描的是同 一时间段的脉冲信号; 本实施例中提供的干扰收集方法, 基于空口相对时间, 不依赖接入点 设备之间时间同步, 采用主从式控制频谱扫描获得重叠特征, 方案简单容易实现且识别的准 确率高。 请参阅图 8, 为本发明实施例提供的再一种干扰收集的方法的流程示意图, 需要特别说 明的是, 本收集方法的实施例中, 在图 6所示的干扰收集方法基础上, 进一步介绍 400具体 采取集中式控制扫描的干扰收集方法。 如图 8所示, 所述方法包括:
600:接收到所述无线管理设备发送的包含有指定信道的信道切换请求消息后切换到所述 指定信道, 并返回信道切换响应消息给所述无线管理设备; 具体的, 所述至少两个接入点设 备中每个接入点设备接收到所述无线管理设备发送的包含有指定信道的信道切换请求消息后 切换到所述指定信道, 并返回信道切换响应消息给所述无线管理设备; 具体地, 如图 1所示 的系统中, 无线管理设备 30向三个接入点设备 31a、 31b、 31c中每个接入点设备发送包含有 指定信道的信道切换请求消息, 通知所述三个接入点设备 31a、 31b、 31c中每个接入点设备 切换到所述指定信道, 需要说明的是, 无线管理设备 30向三个接入点设备 31a、 31b、 31c中 每个接入点设备发送的信道切换请求消息中携带的指定信道为一个特定的频段, 以使三个接 入点设备 31a、 31b、 31c分别切换到该特定的频段, 确保三个接入点设备 31a、 31b、 31c在 同一个信道中与所述无线管理设备 30进行通信,并返回信道切换响应消息给所述无线管理设 备 30, 即三个接入点设备 31a、 31b、 31c切换到相同的信道之后, 会向无线管理设备 30回复 信道切换响应消息, 无线管理设备 30再向三个接入点设备 31a、 31b、 31c回复确认消息。
601: 接收所述无线管理设备发送的包括启动扫描时间戳的频谱扫描请求消息, 依据所述 启动扫描时间戳启动频谱扫描, 收集干扰源的频谱信息。 所述至少两个接入点设备中每个接 入点设备接收所述无线管理设备发送的包括启动扫描时间戳的频谱扫描请求消息, 依据所述 启动扫描时间戳启动频谱扫描, 收集干扰源的频谱信息。 具体地, 若所述至少两个接入点设 备的响应时间同步, 则所述无线管理设备向所述至少两个接入点设备中每个接入点设备发送 的频谱扫描请求中包括的启动扫描时间戳相同, 若所述至少两个接入点设备的响应时间不同 步, 则所述无线管理设备向所述至少两个接入点设备中每个接入点设备发送的频谱扫描请求 中包括的启动扫描时间戳不同。
具体地, 如图 1 所示的系统中, 无线管理设备在向所述三个接入点设备 31a、 31b、 31c 发送频谱扫描请求之前,需要判断所述三个接入点设备 31a、 31b、 31c的响应时间是否同步, 若所述三个接入点设备 31a、 31b、 31c的响应时间同步,则向所述三个接入点设备 31a、 31b、 31c 中每个接入点设备发送的频谱扫描请求中包括的启动扫描时间戳相同, 若所述三个接入 点设备 31a、 31b、 31c的响应时间不同步, 则向所述至少两个接入点设备中每个接入点设备 发送的频谱扫描请求中包括的启动扫描时间戳不同。
602: 将收集的干扰源的频谱信息发送给所述无线管理设备。所述至少两个接入点设备中 每个接入点设备将收集的干扰源的频谱信息发送给所述无线管理设备。 具体地, 如图 1所示 的系统中, 三个接入点设备 31a、 31b、 31c分别将各自收集的干扰源 20的频谱信息发送给所 述无线管理设备 30。
本实施例提供的干扰收集方法, 所述至少两个接入点设备中每个接入点设备接收到包括 启动扫描时间戳的频谱扫描请求后依据启动扫描时间戳启动频谱扫描, 达到同步收集干扰源 的频谱信息的目的; 由于各接入点设备采集的时间几乎达到了同步, 可以解决现有技术中各 接入点设备采集的时间不一致, 在不同时间段的信号特征差异很大导致识别结果不准确的问 题。 请参阅图 9, 显示为本发明实施例提供的一种无线管理设备的原理框图, 用于实现本发 明如图 2, 图 4和图 5所示的干扰识别方法; 如图 9所示, 本发明的无线管理设备包括: 请 求模块 901, 提取模块 902, 匹配模块 903, 以及识别模块 904。
请求模块 901用于向至少两个接入点设备分别发送收集干扰源的频谱信息的请求; 具体 地, 在图 1所示的系统中, 所述请求模块 901用于向所述的三个接入点设备 31a、 31b、 31c 分别发送收集干扰源的频谱信息的请求。
提取模块 902用于从所述至少两个接入点设备接收收集的干扰源的频谱信息, 当确定所 述至少两个接入点设备收集的频谱信息中有属于相同设备类型的干扰源的频谱信息时, 从所 述至少两个接入点设备收集的频谱信息中分别提取所述的属于相同设备类型的干扰源的频谱 信息; 具体地, 在图 1所示的系统中, 提取模块 902用于从所述三个接入点设备 31a、 31b、 31c接收收集的干扰源的频谱信息, 当确定所述三个接入点设备 31a、 31b、 31c收集的频谱信 息中有属于相同设备类型的干扰源的频谱信息时, 从所述三个接入点设备 31a、 31b、 31c收 集的频谱信息中分别提取所述的属于相同设备类型的干扰源的频谱信息; 所述频谱信息包括 快速傅氏变换 FFT数据, 起至时间, 及采样时间等一项或多项。
匹配模块 903用于匹配所述分别提取的属于相同设备类型的干扰源的频谱信息中位于同 一时间段内的特征序列, 计算所述的位于同一时间段内的特征序列的重叠特征匹配值; 所述 特征序列可以理解为干扰源在一个时间段内的频谱特征, 包括中心频率、 带宽、 脉冲指纹、 及占空比类型中一个或多个特征。
识别模块 904用于判断所述重叠特征匹配值是否大于预设阈值, 若大于所述预设阈值, 则确定所述分别提取的属于相同设备类型的干扰源的频谱信息来自同一干扰源, 若不大于所 述预设阈值, 则确定为所述分别提取的属于相同设备类型的干扰源的频谱信息来自不同干扰 源。
所述重叠特征为至少两个接入点设备分别提取的属于相同设备类型的干扰源的频谱信息 中位于同一时间段内的特征序列中相同的或者相似的特征。 参阅图 3, 显示为本发明实施例 提供的重叠特征原理示意图, 以图 1所示系统中三个接入点设备 31a、 31b、 31c为例, 说明 如何识别重叠特征, 如图 3所示, 匹配三个接入点设备 31a、 31b、 31c—共 3组频谱信息中 位于同一时间段内, 即 T1内的特征序列, 计算重叠特征匹配值。
所述重叠特征匹配值为一比率或为一正整数。 具体地, 所述重叠特征匹配值为重叠特征 的频谱信息占干扰源的所有频谱信息的比率, 即, 至少两个接入点设备分别提取属于相同设 备类型的干扰源的频谱信息中位于同一时间段内的特征序列的频谱信息占所述干扰源的所有 频谱信息的比率; 相应的, 用于判断的预设阈值为一比率值, 可以根据经验值设置对应的预 设阈值, 比如 0.5。 或者, 所述重叠特征匹配值为重叠特征的个数, δΡ, 一个接入点设备提取 的属于相同设备类型的干扰源的频谱信息中连续 2个或 2个以上的特征序列与另一个接入点 设备提取的属于相同设备类型的干扰源的频谱信息中的特征序列相同的特征个数; 相应的, 用于判断的预设阈值为一整数, 例如根据经验值设置对应的阈值, 比如 5。
具体地, 如图 1所示的系统中, 比如干扰源 20为蓝牙, 重叠特征匹配值为重叠特征的频 谱信息占所述干扰源 20的所有频谱信息的比率, 判断的预设阈值为 0.5, 无线管理设备 30匹 配接入点设备 31a、 31b、 31c—共 3组频谱信息中位于同一时间段内的特征序列, 计算出的 重叠特征匹配值为 0.7, 则判断所述匹配值大于预设阈值 0.5, 则确定所述分别提取的属于相 同设备类型的干扰源的频谱信息来自同一干扰源, 换言之, 如果无线管理设备 30匹配接入点 设备 31a、 31b、 31c—共 3组频谱信息中位于同一时间段内的特征序列, 计算出的重叠特征 匹配值为 0.3, 则不大于所述预设阈值 0.5, 则确定为所述分别提取的属于相同设备类型的干 扰源的频谱信息来自不同干扰源。 请参阅图 10, 显示为本发明实施例提供的另一种无线管理设备的原理框图。 所述无线管 理设备包括如图 9所示的各个模块, 其中所述请求模块 901具体包括: 信道切换单元 9011和 扫描请求单元 9012。 所述信道切换单元 9011 用于向所述至少两个接入点设备中每个接入点设备发送包含有 指定信道的信道切换请求消息,通知所述至少两个接入点设备切换到所述指定信道;具体的, 如图 1所示的系统中, 用于向所述的三个接入点设备 31a、 31b、 31c发送包含有指定信道的 信道切换请求消息, 通知所述的三个接入点设备 31a、 31b、 31c切换到所述指定信道, 并接 收到所述的三个接入点设备 31a、 31b、 31c返回的响应消息后予以确认。 需要说明的是, 无 线管理设备 30向三个接入点设备 31a、 31b、 31c中每个接入点设备发送的信道切换请求消息 中携带的指定信道为一个特定的频段, 以使三个接入点设备 31a、 31b、 31c分别切换到该特 定的频段, 确保三个接入点设备 31a、 31b、 31c在同一个信道中与所述无线管理设备 30进行 通信, 并返回响应消息给所述无线管理设备 30, 即三个接入点设备 31a、 31b、 31c切换到所 述指定信道之后, 会向无线管理设备 30回复信道切换响应消息, 无线管理设备 30再向三个 接入点设备 31a、 31b、 31c回复确认消息。
所述扫描请求单元 9012连接所述信道切换单元 9011, 用于向所述至少两个接入点设备 发送频谱扫描请求, 以使所述至少两个接入点设备收集干扰源的频谱信息。
本实施例的一种实现方式, 所述无线通信网络采用主从式控制扫描方式, 所述无线管理 设备通过确定一个主接入点设备并由来主接入点设备和从接入点设备之间获取到一段重叠时 间范围内的干扰特征; 则所述扫描请求单元 9012, 具体用于从所述至少两个接入点设备中确 定一个主接入点设备, 并确定所述至少两个接入点设备中除所述主接入点设备之外的接入点 设备为从接入点设备, 向所述主接入点设备发送频谱扫描请求消息, 并令所述主接入点设备 向各个从接入点设备发送携带有启动扫描时间信息的频谱扫描请求消息, 以使所述主接入点 设备和各个从接入点设备在所述启动扫描时间开始收集干扰源的频谱信息。 其中, 所述主接 入点设备收到无线管理设备发送的频谱扫描请求消息后, 会预设所述启动扫描时间, 再向各 从接入点设备发送携带所述启动扫描时间的信息的频谱扫描请求; 所述启动扫描时间为一相 对时间, 所述主接入点设备会在向各从接入点设备发送频谱扫描请求开始的所述启动扫描时 间后启动扫描, 而各个从接入点设备会在收到主接入点设备的频谱扫描请求开始的所述启动 扫描时间后启动扫描。
所述扫描请求单元 9012自所述多个接入点设备中确定一个主接入点设备,并确定所述至 少两个接入点设备中除所述主接入点设备之外的接入点设备为从接入点设备具体为比较所述 至少两个接入点设备中每个接入点设备上报的干扰值, 选择干扰值最大的一个接入点设备作 为主接入点设备, 其他, 即所述至少两个接入点设备中除所述主接入点设备之外的接入点设 备作为从接入点设备,并将所述主接入点设备予以标记,向所述主接入点设备发送标记信息。
如图 1所示的系统中,无线管理设备 30根据干扰严重程度,从三个接入点设备 31a、31b、 31c中确定接入点设备 31a作为主接入点设备, 其他两个接入点设备 31b、 31c为从接入点设 备; 然后无线管理设备 30向主接入点设备 31a发送频谱扫描请求, 以使主接入点设备 31a预 设一启动扫描时间, 并令主接入点设备 31a向从接入点设备 31b、 31c发送携带有所述启动扫 描时间的频谱扫描请求消息; 从而通过主接入点设备控制从接入点设备 31b、 31c在所述启动 扫描时间开始频谱扫描, 基本上可以保证三个接入点设备 31a、 31b、 31c在同一时间启动扫 描, 从而扫描到同一时间段的脉冲信号; 并可选地, 无线管理设备 30在向主接入点设备 31a 发送频谱扫描请求消息之后, 接收主接入点设备 31a回复的频谱扫描响应消息。
于实际的执行过程中, 当主接入点设备 31a收到频谱扫描请求后, 回复频谱扫描响应消 息, 主接入点设备 31a不会立即启动扫描, 会预设一启动扫描时间, 例如 tl, 然后依据启动 扫描的时间,在发送完频谱扫描请求经过启动扫描时间 tl后启动扫描,同时主接入点设备 31a 给两个从接入点设备 31b、 31c发送频谱扫描请求中携带该启动扫描的时间 tl。两个从接入点 设备 31b、 31c在收到这个请求后, 设置定时, 在接收到频谱扫描请求经过启动扫描时间 tl 后开始启动扫描, 主接入点设备 31a及从接入点设备 31b、 31c之间的消息是通过无线电磁波 传输, 到达两个从接入点设备 31b、 31c的时间差是纳秒级别, 相对频谱扫描要求的毫秒级别 可忽略不计。 所以, 基本上可以保证所述的三个接入点设备 31a、 31b、 31c在同一时间启动 扫描, 从而扫描到同一时间段的脉冲信号。
所述扫描请求单元 9012 可以令所述主接入点设备通过广播帧发送携带有所述启动扫描 时间信息的频谱扫描请求给从接入点设备 31b、 31c; 或者也可以预先将所述主接入点设备及 从接入点设备设置为一组播组或者预先配置一组播地址, 然后令所述主接入点设备通过组播 帧发送携带有所述启动扫描时间信息的频谱扫描请求给从接入点设备。
所述提取模块 902具体用于从所述主接入点设备和各个从接入点设备接收依据所述启动 扫描时间启动频谱扫描、 收集的干扰源的频谱信息, 当确定所述主接入点设备和各个从接入 点设备收集的频谱信息中有属于相同设备类型的干扰源的频谱信息时, 从所述主接入点设备 和各个从接入点设备收集的频谱信息中分别提取所述的属于相同设备类型的干扰源的频谱信 息。
本实施例的另一种实现方式, 所述无线通信网络采用集中式控制扫描方式, 由所述无线 管理设备来保证所述至少两个接入点设备获取到一段重叠时间范围内的干扰特征,则具体地, 所述扫描请求单元 9012, 用于向所述至少两个接入点设备中每个接入点设备分别发送携带有 启动扫描时间戳的频谱扫描请求; 所述接收单元 9013, 具体用于接收所述至少两个接入点设 备依据所述启动扫描时间戳启动频谱扫描,收集的干扰源的频谱信息;具体如图 1的系统中, 接收三个接入点设备 31a、 31b、 31c依据所述启动扫描时间戳启动频谱扫描后, 收集到的所 述干扰源 20的频谱信息。
所述扫描请求单元 9012具体还用于判断所述至少两个接入点设备的响应时间是否同步。 若所述至少两个接入点设备的响应时间同步, 则向所述至少两个接入点设备发送携带有相同 的启动扫描时间戳的频谱扫描请求; 若所述至少两个接入点设备的响应时间不同步, 则依据 所述至少两个接入点设备的响应时间分别向所述至少两个接入点设备发送携带有不同启动扫 描时间戳的频谱扫描请求。
本实施例中提供的一种实现方式, 无线管理设备可以基于空口相对时间, 不依赖接入点 设备之间时间同步, 采用主从式控制频谱扫描获得重叠特征, 方案简单容易实现且识别的准 确率高; 另一种实现方式, 无线管理设备根据接入点设备间的相对时间, 通过设置启动扫描 时间戳, 使接入点设备同步收集干扰源的频谱信息, 解决现有技术中各接入点设备采集的时 间不一致, 不同时间段的信号特征差异大, 导致识别结果不准确的问题。 请参阅图 11, 显示为本发明实施例提供的接入点设备的原理框图, 用于实现本发明如图 6, 图 7和图 8所示的干扰收集方法; 如图 11所示, 所述接入点设备包括: 收集模块 1101以 及发送模块 1102。
收集模块 1101用于依据无线管理设备的请求收集干扰源的频谱信息; 例如, 在图 1所示 的系统中, 三个接入点设备 31a、 31b、 31c的收集模块 1101依据所述无线管理设备 30的请 求收集干扰源的频谱信息。
发送模块 1102用于将所述收集模块 1101收集的干扰源的频谱信息发送给所述无线管理 设备。 即三个接入点设备 31a、 31b、 31c的发送模块 1102将收集的所述干扰源 20的频谱信 息发送给所述无线管理设备 30。
所述收集模块 1101 具体用于接收所述无线管理设备发送的包含有指定信道的信道切换 请求消息, 并切换到所述指定信道; 可选的, 还用于返回信道切换响应消息给所述无线管理 设备。 具体地, 如图 1所示的系统中, 三个接入点设备 31a、 31b、 31c接收无线管理设备 30 发送的包含有指定信道的信道切换请求消息后, 所述三个接入点设备 31a、 31b、 31c都切换 到所述指定信道, 需要说明的是, 所述信道切换请求信息中携带的指定信道为一个特定的频 段,以使三个接入点设备 31a、31b、31c分别切换到该特定的频段,确保三个接入点设备 31a、 31b、 31c在同一个信道中与所述无线管理设备 30进行通信。
一种可能实现方式中, 所述接入点设备采用主从式控制扫描方式, 则所述无线管理设备 会从所述至少两个接入点设备中确定一个主接入点设备, 并确定所述至少两个接入点设备中 除所述主接入点设备之外的接入点设备为从接入点设备, 再向主接入点设备发送携带频谱扫 描请求消息。 具体的, 所述无线管理设备通过比较所述至少两个接入点设备上报的干扰值, 选择干扰值最大的一个接入点设备作为主接入点设备, 其他, 即所述至少两个接入点设备中 除所述主接入点设备之外的接入点设备作为从接入点设备,并将所述主接入点设备予以标记, 向所述主接入点设备发送标记信息。 换言之, 所述无线管理设备根据干扰严重程度来确定主 接入点设备, 然后由主接入点设备来保证各个接入点设备之间能获取到一段重叠时间范围内 的干扰特征。
若所述接入点设备为主接入点设备,则所述收集模块 1101具体还用于接收所述无线管理 设备发送的频谱扫描请求消息, 预设一启动扫描时间, 并依据所述启动扫描时间启动频谱扫 描, 收集干扰源的频谱信息; 还用于向其他接入点设备发送携带所述启动扫描时间信息的频 谱扫描请求消息, 以使其他接入点设备依据所述启动扫描时间启动频谱扫描, 收集干扰源的 频谱信息。可选的, 所述收集模块 1101具体还用于向所述无线管理设备回复频谱扫描响应消 息。 所述收集模块 1101, 可以通过广播帧发送携带有所述启动扫描时间信息的频谱扫描请求 给其他接入点设备; 或者, 通过组播帧发送携带有所述启动扫描时间信息的频谱扫描请求给 其他接入点设备, 此时所述无线管理设备预先将所述主接入点设备及各从接入点设备设置为 一组播组或者配置一组播地址。 其中, 所述启动扫描时间为一相对时间, 所述主接入点设备 会在向各从接入点设备发送频谱扫描请求开始的所述启动扫描时间后启动扫描, 而各个从接 入点设备会在收到主接入点设备的频谱扫描请求开始的所述启动扫描时间后启动扫描。 基本 上可以保证主接入点设备和各个从接入点设备在同一时间启动扫描, 从而扫描到同一时间段 的脉冲信号。
另一种可能实现方式中, 所述接入点设备采用集中式控制扫描方式, 则由所述无线管理 设备控制各个接入点设备同步收集干扰源的频谱信息。则所述收集模块 1101具体还用于接收 所述无线管理设备发送的包括启动扫描时间戳的频谱扫描请求, 并依据所述启动扫描时间戳 启动频谱扫描, 收集干扰源的频谱信息。 可选的, 所述扫描单元 11012还用于向所述无线管 理设备回复的频谱扫描响应消息。
本实施例提供的干扰收集方法, 由无线管理设备向接入点设备发送包括启动扫描时间戳 的频谱扫描请求, 使接入点设备依据启动扫描时间戳启动频谱扫描, 保证各接入点设备同步 收集干扰源的频谱信息, 从而解决现有技术中各接入点设备采集时间不同步, 在不同时间段 的信号特征差异很大, 导致识别结果不准确的问题。 请参阅图 12, 为本发明实施例提供的一种无线管理设备的结构示意图, 如图所示, 所述 无线管理设备包括处理器 1210和存储器 1220;所述处理器 1210可以通过总线与存储器 1220 进行通信。 其中, 所述存储器 1220内存储有程序代码, 所述程序代码包括计算机操作指令。 所述处理器 1210执行所述程序代码, 可以实现本发明如图 2、 图 4和图 5所示的干扰识 别方法。
所述处理器 1210执行所述程序代码,用于请求至少两个接入点设备分别收集干扰源的频 谱信息; 从所述至少两个接入点设备接收收集的干扰源的频谱信息, 确定所述至少两个接入 点设备收集的频谱信息中有属于相同设备类型的干扰源的频谱信息; 从所述至少两个接入点 设备收集的频谱信息中分别提取所述的属于相同设备类型的干扰源的频谱信息; 匹配所述分 别提取的属于相同设备类型的干扰源的频谱信息中位于同一时间段内的特征序列, 计算所述 的位于同一时间段内的特征序列的重叠特征匹配值; 判断所述重叠特征匹配值是否大于预设 阈值, 若大于所述预设阈值, 则确定所述分别提取的属于相同设备类型的干扰源的频谱信息 来自同一干扰源, 若不大于所述预设阈值, 则确定为所述分别提取的属于相同设备类型的干 扰源的频谱信息来自不同干扰源。
所述存储器 1220还可用于存储频谱信息。
所述重叠特征为至少两个接入点设备分别提取的属于相同设备类型的干扰源的频谱信息 中位于同一时间段内的特征序列中相同的或者相似的特征。 参阅图 3, 显示为本发明实施例 提供的重叠特征原理示意图, 以图 1所示系统中三个接入点设备 31a、 31b、 31c为例, 说明 如何识别重叠特征, 如图 3所示, 匹配三个接入点设备 31a、 31b、 31c—共 3组频谱信息中 位于同一时间段内, 即 T1内的特征序列, 计算重叠特征匹配值。
所述重叠特征匹配值为一比率或为一正整数。 具体地, 所述重叠特征匹配值为重叠特征 的频谱信息占干扰源的所有频谱信息的比率, 即, 至少两个接入点设备分别提取属于相同设 备类型的干扰源的频谱信息中位于同一时间段内的特征序列的频谱信息占所述干扰源的所有 频谱信息的比率; 相应的, 用于判断的预设阈值为一比率值, 可以根据经验值设置对应的预 设阈值, 比如 0.5。 或者, 所述重叠特征匹配值为重叠特征的个数, δΡ, 一个接入点设备提取 的属于相同设备类型的干扰源的频谱信息中连续 2个或 2个以上的特征序列与另一个接入点 设备提取的属于相同设备类型的干扰源的频谱信息中的特征序列相同的特征个数; 相应的, 用于判断的预设阈值为一整数, 例如根据经验值设置对应的阈值, 比如 5。
所述处理器 1210 具体用于向所述至少两个接入点设备中每个接入点设备发送包含有指 定信道的信道切换请求消息, 通知所述至少两个接入点设备切换到所述指定信道; 接收所述 至少两个接入点设备中每个接入点设备返回的信道切换响应消息; 从所述至少两个接入点设 备中确定一个主接入点设备, 并确定所述至少两个接入点设备中除所述主接入点设备之外的 接入点设备为从接入点设备, 并向所述主接入点设备发送频谱扫描请求消息, 令所述主接入 点设备向各从接入点设备发送携带有启动扫描时间的信息的频谱扫描请求消息; 接收所述主 接入点设备回复的频谱扫描响应消息。 其中, 所述启动扫描时间为一相对时间, 所述主接入 点设备会在向各从接入点设备发送频谱扫描请求开始的所述启动扫描时间后启动扫描, 而各 个从接入点设备会在收到主接入点设备的频谱扫描请求开始的所述启动扫描时间后启动扫描。 基本上可以保证主接入点设备和各个从接入点设备在同一时间启动扫描, 从而扫描到同一时 间段的脉冲信号。 或者,
所述处理器 1210 具体用于向所述至少两个接入点设备中每个接入点设备发送包含有指 定信道的信道切换请求消息, 通知所述至少两个接入点设备切换到所述指定信道; 接收所述 至少两个接入点设备中每个接入点设备返回的信道切换响应消息; 向所述至少两个接入点设 备中每个接入点设备发送频谱扫描请求消息,所述频谱扫描请求消息中包括启动扫描时间戳, 以使所述至少两个接入点设备中每个接入点设备依据所述启动扫描时间戳启动频谱扫描, 收 集干扰源的频谱信息。 请参阅图 13, 为本发明实施例提供的一种接入点设备的结构示意图, 如图所示, 所述接 入点设备包括处理器 1310和存储器 1320; 所述处理器 1310可以通过总线与存储器 1320进 行通信。 其中, 所述存储器 1310内存储有程序代码, 所述程序代码包括计算机操作指令。 所 述处理器 1310执行所述程序代码,可以实现本发明如图 6,图 7和图 8所示的干扰收集方法。
所述处理器 1310用于依据所述无线管理设备的请求收集干扰源的频谱信息,并将收集的 干扰源的频谱信息发送给所述无线管理设备;
所述存储器 1310还可用于存储频谱信息。
所述处理器 1310 具体用于接收到所述无线管理设备发送的包含有指定信道的信道切换 请求消息后切换到所述指定信道, 并返回信道切换响应消息给所述无线管理设备; 接收所述 无线管理设备发送的频谱扫描请求消息, 预设一启动扫描时间, 并发送携带有所述启动扫描 时间信息的频谱扫描请求消息给其他接入点设备, 并依据所述启动扫描时间启动频谱扫描, 收集干扰源的频谱信息;所述处理器 1310可以通过广播帧发送携带有所述启动扫描时间信息 的频谱扫描请求给其他接入点设备; 或者, 通过组播帧发送携带有所述启动扫描时间信息的 频谱扫描请求给其他接入点设备; 所述启动扫描时间为一相对时间, 所述主接入点设备会在 向各从接入点设备发送频谱扫描请求开始的所述启动扫描时间后启动扫描, 而各个从接入点 设备会在收到主接入点设备的频谱扫描请求开始的所述启动扫描时间后启动扫描。 基本上可 以保证主接入点设备和各个从接入点设备在同一时间启动扫描, 从而扫描到同一时间段的脉 冲信号。 或者, 所述处理器 1310, 具体用于接收到所述无线管理设备发送的包含有指定信道的信道切换 请求消息后切换到所述指定信道, 并返回信道切换响应消息给所述无线管理设备; 接收所述 无线管理设备发送的包括启动扫描时间戳的频谱扫描请求消息, 依据所述启动扫描时间戳启 动频谱扫描, 收集干扰源的频谱信息。
综上所述, 本发明提供的方法及系统利用了重叠特征匹配的方式, 针对干扰源的识别具 有较高的准确性, 且方案简单易于实现, 同时在识别的过程中不会对正常的无线接入业务造 成影响, 由于各接入点设备采集的时间几乎达到了同步, 进而解决了现有技术中与各接入点 设备采集的时间不一致, 在不同时间段的信号特征差异很大而导致识别结果可能不准确的困 扰。 所以, 本发明有效克服了现有技术中的种种缺点而具高度产业利用价值。
上述实施例仅示例性说明本发明的原理及其功效, 而非用于限制本发明。 任何熟悉本技 术领域的技术人员在本发明揭露的技术范围内, 可轻易想到变化或替换, 都应涵盖在本发明 的保护范围之内, 因此, 本发明的保护范围应以所述权利要求的保护范围为准。

Claims

权 利 要 求 书 、一种干扰识别的方法, 应用于包含有无线管理设备及至少两个接入点设备的无线通信网络 中, 其特征在于, 所述干扰识别方法包括:
请求所述至少两个接入点设备分别收集干扰源的频谱信息;
从所述至少两个接入点设备接收收集的干扰源的频谱信息, 确定所述至少两个接入点 设备收集的频谱信息中有属于相同设备类型的干扰源的频谱信息;
从所述至少两个接入点设备收集的频谱信息中分别提取所述的属于相同设备类型的干 扰源的频谱信息;
匹配所述分别提取的属于相同设备类型的干扰源的频谱信息中位于同一时间段内的特 征序列, 计算所述的位于同一时间段内的特征序列的重叠特征匹配值;
判断所述重叠特征匹配值是否大于预设阈值, 若大于所述预设阈值, 则确定所述分别 提取的属于相同设备类型的干扰源的频谱信息来自同一干扰源, 若不大于所述预设阈值, 则确定为所述分别提取的属于相同设备类型的干扰源的频谱信息来自不同干扰源。 、根据权利要求 1所述的方法, 其特征在于, 所述的请求所述至少两个接入点设备分别收集 干扰源的频谱信息具体包括:
向所述至少两个接入点设备中每个接入点设备发送包含有指定信道的信道切换请求消 息, 通知所述至少两个接入点设备切换到所述指定信道;
接收所述至少两个接入点设备中每个接入点设备返回的信道切换响应消息; 从所述至少两个接入点设备中确定一个主接入点设备, 并确定所述至少两个接入点设 备中除所述主接入点设备之外的接入点设备为从接入点设备, 并向所述主接入点设备发送 频谱扫描请求消息, 令所述主接入点设备向各个从接入点设备发送携带有启动扫描时间的 信息的频谱扫描请求消息。 、 根据权利要求 2所述的方法, 其特征在于, 从所述至少两个接入点设备中确定一 个主接 入点设备, 并确定所述至少两个接入点设备中除所述主接入点设备之外的接入点设备为从 接入点设备具体包括: 比较所述至少两个接入点设备中每个接入点设备上报的干扰值, 选 择干扰值最大的一个接入点设备作为主接入点设备, 其他则为从接入点设备。 、根据权利要求 2或 3所述的方法, 其特征在于, 令所述主接入点设备向各从接入点设备发 送携带有所述启动扫描时间的信息的频谱扫描请求消息具体包括: 令所述主接入点设备通 过广播帧发送携带有所述启动扫描时间信息的频谱扫描请求消息给各从接入点设备。 、根据权利要求 2或 3所述的方法, 其特征在于, 令所述主接入点设备向各从接入点设备发 送携带有所述启动扫描时间的信息的频谱扫描请求消息具体包括: 预先将所述主接入点设 备及各从接入点设备设置为一组播组或者预先配置一组播地址, 并令所述主接入点设备通 过组播帧发送携带有所述启动扫描时间信息的频谱扫描请求消息给各从接入点设备。 、根据权利要求 1所述的方法, 其特征在于, 所述请求至少两个接入点设备分别收集干扰源 的频谱信息具体包括:
向所述至少两个接入点设备中每个接入点设备发送包含有指定信道的信道切换请求消 息, 通知所述至少两个接入点设备切换到所述指定信道;
接收所述至少两个接入点设备中每个接入点设备返回的信道切换响应消息; 向所述至少两个接入点设备中每个接入点设备发送频谱扫描请求消息, 所述频谱扫描 请求消息中包括启动扫描时间戳, 以使所述至少两个接入点设备中每个接入点设备依据所 述启动扫描时间戳启动频谱扫描, 收集干扰源的频谱信息。 、根据权利要求 6所述的方法, 其特征在于, 在向所述至少两个接入点设备中每个接入点设 备发送频谱扫描请求消息之前, 还包括: 判断所述至少两个接入点设备的响应时间是否同 步, 若所述至少两个接入点设备的响应时间同步, 则向所述至少两个接入点设备中每个接 入点设备发送的频谱扫描请求消息中包括的启动扫描时间戳相同, 若所述至少两个接入点 设备的响应时间不同步, 则向所述至少两个接入点设备中每个接入点设备发送的频谱扫描 请求消息中包括的启动扫描时间戳不同。 、 根据权利要求 1 至 7任一项所述的方法, 其特征在于, 所述频谱信息包括快速傅氏变换 FFT数据、 起至时间、 及采样时间中一项或多项; 所述特征序列为所述干扰源于一时间段 内的频谱特征, 包括中心频率、 带宽、 脉冲指纹、 及占空比类型中一个或多个; 所述匹配 值为一比率值或为一正整数; 所述预设阈值为一比率值或一正整数。 、一种干扰收集的方法, 应用于包含有无线管理设备及至少两个接入点设备的无线通信网络 中, 其特征在于, 所述干扰收集方法包括:
依据所述无线管理设备的请求收集干扰源的频谱信息; 将收集的干扰源的频谱信息发送给所述无线管理设备。 、 根据权利要求 9所述的方法, 其特征在于, 所述的依据所述无线管理设备的请求收集干 扰源的频谱信息具体包括:
接收所述无线管理设备发送的包含有指定信道的信道切换请求消息, 切换到所述指 定信道, 并返回信道切换响应消息给所述无线管理设备;
接收所述无线管理设备发送的频谱扫描请求消息, 预设一启动扫描时间, 发送携带 有所述启动扫描时间信息的频谱扫描请求消息给其他接入点设备, 并依据所述启动扫描 时间启动频谱扫描, 收集干扰源的频谱信息。 、 根据权利要求 10所述的方法, 其特征在于, 所述发送携带有所述启动扫描时间信息的频 谱扫描请求消息给其他接入点设备具体为: 通过广播帧或组播帧发送携带有所述启动扫 描时间信息的频谱扫描请求消息给其他接入点设备。 、 根据权利要求 9所述的方法, 其特征在于, 所述的依据所述无线管理设备的请求收集干 扰源的频谱信息具体包括:
接收到所述无线管理设备发送的包含有指定信道的信道切换请求消息后切换到所述 指定信道, 并返回信道切换响应消息给所述无线管理设备;
接收所述无线管理设备发送的包括启动扫描时间戳的频谱扫描请求消息, 依据所述 启动扫描时间戳启动频谱扫描, 收集干扰源的频谱信息。 、 一种无线管理设备, 其特征在于, 包括:
请求模块, 用于向至少两个接入点设备分别发送收集干扰源的频谱信息的请求; 提取模块, 用于从所述至少两个接入点设备接收收集的干扰源的频谱信息, 当确定 所述至少两个接入点设备收集的频谱信息中有属于相同设备类型的干扰源的频谱信息, 并从所述至少两个接入点设备收集的频谱信息中分别提取所述的属于相同设备类型的干 扰源的频谱信息;
匹配模块, 用于匹配所述分别提取的属于相同设备类型的干扰源的频谱信息中位于 同一时间段内的特征序列, 计算所述的位于同一时间段内的特征序列的匹配值;
识别模块, 用于判断所述匹配值是否大于预设阈值, 若大于所述预设阈值, 则确定 所述分别提取的属于相同设备类型的干扰源的频谱信息来自同一干扰源, 若不大于所述 预设阈值, 则确定为所述分别提取的属于相同设备类型的干扰源的频谱信息来自不同干 扰源。 、 根据权利要求 13所述的无线管理设备, 其特征在于, 所述请求模块包括:
信道切换单元, 用于向所述至少两个接入点设备发送包含有指定信道的信道切换请 求消息, 通知所述至少两个接入点设备切换到所述指定信道, 并接收所述至少两个接入 点设备中每个接入点设备返回的信道切换响应消息;
扫描请求单元, 用于从所述至少两个接入点设备中确定一个主接入点设备, 并确定 所述至少两个接入点设备中除所述主接入点设备之外的接入点设备为从接入点设备, 并 向所述主接入点设备发送频谱扫描请求消息, 令所述主接入点设备向各从接入点设备发 送携带有启动扫描时间是的信息的频谱扫描请求。 、根据权利要求 14所述的无线管理设备, 其特征在于, 所述扫描请求单元从所述至少两个 接入点设备中确定一个主接入点设备, 并确定所述至少两个接入点设备中除所述主接入 点设备之外的接入点设备为从接入点设备具体包括: 比较所述至少两个接入点设备中每 个接入点设备上报的干扰值, 选择干扰值最大的一个接入点设备作为主接入点设备, 其 他则为从接入点设备。 、 根据权利要求 14或 15所述的无线管理设备, 其特征在于, 所述扫描请求单元令所述主 接入点设备向各从接入点设备发送携带有所述启动扫描时间是的信息的频谱扫描请求包 括: 令所述主接入点设备通过广播帧发送携带有所述启动扫描时间信息的频谱扫描请求 消息给各从接入点设备。 、 根据权利要求 14或 15所述的无线管理设备, 其特征在于, 所述扫描请求单元令所述主 接入点设备向各从接入点设备发送携带有所述启动扫描时间是的信息的频谱扫描请求包 括: 预先将所述主接入点设备及各从接入点设备设置为一组播组或者预先配置一组播地 址, 并令所述主接入点设备通过组播帧发送携带有所述启动扫描时间信息的频谱扫描请 求消息给各从接入点设备。 、 根据权利要求 13所述的无线管理设备, 其特征在于, 所述请求模块包括:
信道切换单元, 用于向所述至少两个接入点设备中每个接入点设备发送包含有指定 信道的信道切换请求消息, 通知所述至少两个接入点设备切换到所述指定信道, 并接收 所述至少两个接入点设备中每个接入点设备返回的信道切换响应消息; 扫描请求单元, 用于向所述至少两个接入点设备中每个接入点设备发送频谱扫描请 求消息, 所述频谱扫描请求消息中包括启动扫描时间戳, 以使所述至少两个接入点设备 中每个接入点设备依据所述启动扫描时间戳启动频谱扫描, 收集干扰源的频谱信息。 、根据权利要求 18所述的无线管理设备, 其特征在于, 所述扫描请求单元还用于判断所述 至少两个接入点设备的响应时间是否同步, 若所述至少两个接入点设备的响应时间同步, 则向所述至少两个接入点设备中每个接入点设备发送的频谱扫描请求消息中包括的启动 扫描时间戳相同, 若所述至少两个接入点设备的响应时间不同步, 则向所述至少两个接 入点设备中每个接入点设备发送的频谱扫描请求消息中包括的启动扫描时间戳不同。 、 根据权利要求 13至 19任一项所述的无线管理设备, 其特征在于, 所述频谱信息包括快 速傅氏变换 FFT数据、 起至时间、 及采样时间中一项或多项; 所述特征序列为所述干扰 源于一时间段内的频谱特征, 包括中心频率、 带宽、 脉冲指纹、 及占空比类型中一个或 多个; 所述匹配值为一比率值或为一正整数; 所述预设阈值为一比率值或一正整数。 、 一种接入点设备, 其特征在于, 包括:
收集模块, 用于依据无线管理设备的请求收集干扰源的频谱信息; 以及
发送模块, 用于将所述收集模块收集的干扰源的频谱信息发送给所述无线管理设备。 、根据权利要求 21所述的接入点设备, 其特征在于, 所述收集模块具体用于接收所述无线 管理设备发送的包含有指定信道的信道切换请求消息, 并切换到所述指定信道; 接收所 述无线管理设备发送的频谱扫描请求消息, 预设一启动扫描时间, 发送携带有所述启动 扫描时间信息的频谱扫描请求消息给其他接入点设备, 并依据所述启动扫描时间启动频 谱扫描, 收集干扰源的频谱信息。 、根据权利要求 22所述的接入点设备, 其特征在于, 所述收集模块具体通过广播帧或组播 帧发送携带有所述启动扫描时间信息的频谱扫描请求消息给其他接入点设备。 、根据权利要求 21所述的接入点设备, 其特征在于, 所述收集模块具体用于接收所述无线 管理设备发送的包含有指定信道的信道切换请求消息, 并切换到所述指定信道; 接收所 述无线管理设备发送的包括启动扫描时间戳的频谱扫描请求消息, 依据所述启动扫描时 间戳启动频谱扫描, 收集干扰源的频谱信息。 、 一种干扰收集和识别的系统, 其特征在于, 包括如权利要求 13至 20任一项所述的无线 管理设备, 和至少两个接入点设备;
所述至少两个接入点设备, 用于收集干扰源的频谱信息, 并将收集的干扰源的频谱 信息发送给所述无线管理设备。
PCT/CN2012/083718 2012-10-30 2012-10-30 一种干扰收集和识别的方法、设备及系统 WO2014067057A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201280021530.3A CN103947242B (zh) 2012-10-30 2012-10-30 一种干扰收集和识别的方法、设备及系统
EP12887615.8A EP2894894B1 (en) 2012-10-30 2012-10-30 Method, device and system for collecting and identifying interference
PCT/CN2012/083718 WO2014067057A1 (zh) 2012-10-30 2012-10-30 一种干扰收集和识别的方法、设备及系统
US14/694,782 US9686700B2 (en) 2012-10-30 2015-04-23 Method, device and system for collecting and identifying interference

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2012/083718 WO2014067057A1 (zh) 2012-10-30 2012-10-30 一种干扰收集和识别的方法、设备及系统

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/694,782 Continuation US9686700B2 (en) 2012-10-30 2015-04-23 Method, device and system for collecting and identifying interference

Publications (1)

Publication Number Publication Date
WO2014067057A1 true WO2014067057A1 (zh) 2014-05-08

Family

ID=50626296

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/083718 WO2014067057A1 (zh) 2012-10-30 2012-10-30 一种干扰收集和识别的方法、设备及系统

Country Status (4)

Country Link
US (1) US9686700B2 (zh)
EP (1) EP2894894B1 (zh)
CN (1) CN103947242B (zh)
WO (1) WO2014067057A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108882303A (zh) * 2017-05-08 2018-11-23 大唐移动通信设备有限公司 一种干扰的规避方法和装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6636870B2 (ja) * 2016-06-28 2020-01-29 Kddi株式会社 被制御側装置における所定機能の起動時刻を制御する制御側装置、システム及びプログラム
US10963755B2 (en) * 2016-09-20 2021-03-30 Mitsubishi Electric Corporation Interference identification device and interference identification method
CN110062417B (zh) * 2018-01-19 2023-08-22 华为技术有限公司 一种协作传输控制的方法、装置及系统
JP7155796B2 (ja) * 2018-09-20 2022-10-19 日本電信電話株式会社 無線通信システム、集約装置、干渉源エアタイム取得方法および干渉源エアタイム取得プログラム
CN110266406B (zh) * 2019-06-25 2021-12-10 深圳市吉祥腾达科技有限公司 无线路由器自动选择信道测试方法
CN112543411B (zh) * 2019-09-20 2023-07-11 中兴通讯股份有限公司 一种无线通信系统的干扰定位方法、装置和系统
US11510191B2 (en) * 2020-03-10 2022-11-22 Cisco Technology, Inc. Decentralized radio resource allocation using a distributed cache

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1635723A (zh) * 2003-12-30 2005-07-06 智邦科技股份有限公司 无线通信的干扰源辨识装置和方法
CN101871978A (zh) * 2009-04-23 2010-10-27 大唐移动通信设备有限公司 一种确定干扰源位置的方法、系统和装置
CN102083090A (zh) * 2009-11-27 2011-06-01 中国移动通信集团北京有限公司 一种干扰源的定位方法及装置
CN102694607A (zh) * 2011-03-25 2012-09-26 北京海曼无限信息技术有限公司 针对移动干扰源的网络化软件无线信号监测方法及系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100375555C (zh) * 2002-01-25 2008-03-12 艾利森电话股份有限公司 干扰源识别方法
TW595140B (en) * 2002-04-22 2004-06-21 Cognio Inc System and method for spectrum management of a shared frequency band
US7929508B1 (en) * 2008-06-11 2011-04-19 Atheros Communications, Inc. Radio frequency signal analysis and classification using time-frequency information
US8369305B2 (en) * 2008-06-30 2013-02-05 Cisco Technology, Inc. Correlating multiple detections of wireless devices without a unique identifier
US8660212B2 (en) * 2010-01-29 2014-02-25 Aruba Networks, Inc. Interference classification with minimal or incomplete information
US9167457B2 (en) * 2010-04-06 2015-10-20 Hewlett-Packard Development Company, L.P. Measuring and displaying wireless network quality
US8976702B2 (en) * 2012-02-07 2015-03-10 Cisco Technology, Inc. Co-channel utilization estimation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1635723A (zh) * 2003-12-30 2005-07-06 智邦科技股份有限公司 无线通信的干扰源辨识装置和方法
CN101871978A (zh) * 2009-04-23 2010-10-27 大唐移动通信设备有限公司 一种确定干扰源位置的方法、系统和装置
CN102083090A (zh) * 2009-11-27 2011-06-01 中国移动通信集团北京有限公司 一种干扰源的定位方法及装置
CN102694607A (zh) * 2011-03-25 2012-09-26 北京海曼无限信息技术有限公司 针对移动干扰源的网络化软件无线信号监测方法及系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108882303A (zh) * 2017-05-08 2018-11-23 大唐移动通信设备有限公司 一种干扰的规避方法和装置

Also Published As

Publication number Publication date
US20150230111A1 (en) 2015-08-13
CN103947242A (zh) 2014-07-23
EP2894894A1 (en) 2015-07-15
US9686700B2 (en) 2017-06-20
EP2894894B1 (en) 2017-08-23
CN103947242B (zh) 2018-01-16
EP2894894A4 (en) 2015-12-02

Similar Documents

Publication Publication Date Title
WO2014067057A1 (zh) 一种干扰收集和识别的方法、设备及系统
EP2727392B1 (en) Distributed positioning mechanism for wireless communication devices
CN105165070B (zh) 无线终端发现接入点的系统、程序和方法
US10462759B2 (en) System and method for clock synchronization on a wireless network
CN103052154B (zh) 使用Zigbee无线接口进行低功耗室内定位的装置及方法
WO2020029849A1 (zh) 随机接入方法、通信装置、芯片及存储介质
US20180206134A1 (en) Wireless environment information collection system and method
WO2012163265A1 (zh) 实现覆盖测量的方法及设备
CN104158562A (zh) 基于射频遥控系统的跳频方法
CN106982423A (zh) 通信装置以及控制方法
Kao et al. An accurate fake access point detection method based on deviation of beacon time interval
CN113848771B (zh) 一种uwb锚点自动配置方法、装置、设备及储存介质
EP3852397A1 (en) Method and apparatus for positioning user equipment, storage medium, and electronic device
CN104486362A (zh) 一种WiFi热点描述信息的获取方法及系统
WO2015051578A1 (zh) 无线定位识别系统、定位识别方法和定位终端的出厂方法
CN106131331B (zh) 一种对多个智能设备进行统一控制的方法、设备和系统
CN102149188A (zh) 用于同步节点的方法
US20160227494A1 (en) Method and apparatus to determine a transmission time of a wireless data frame
WO2013044866A1 (zh) 同步时间差获取方法、装置和系统
WO2022148251A1 (zh) 一种同步信号的发送、接收方法、网络设备及终端
JP2013070135A (ja) 無線通信システム
Helluy-Lafont et al. Bluetooth devices fingerprinting using low cost SDR
CN110636638A (zh) 邻区管理方法、装置、基站及存储介质
WO2018028428A1 (zh) 接入子带的方法、装置及存储媒介
CN115134744A (zh) 一种基于5g传输功率控制的高精度载波定位方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12887615

Country of ref document: EP

Kind code of ref document: A1

REEP Request for entry into the european phase

Ref document number: 2012887615

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2012887615

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE