CN108430075B - Method and device for filtering Wi-Fi access equipment - Google Patents

Method and device for filtering Wi-Fi access equipment Download PDF

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CN108430075B
CN108430075B CN201810105876.0A CN201810105876A CN108430075B CN 108430075 B CN108430075 B CN 108430075B CN 201810105876 A CN201810105876 A CN 201810105876A CN 108430075 B CN108430075 B CN 108430075B
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access
filtering
directional antenna
equipment
wifi module
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CN108430075A (en
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檀深秋
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Zhejiang Dahua Technology Co Ltd
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Zhejiang Dahua Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/04—Access restriction performed under specific conditions based on user or terminal location or mobility data, e.g. moving direction, speed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/14—Access restriction or access information delivery, e.g. discovery data delivery using user query or user detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point

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

Abstract

The invention discloses a method and a device for filtering Wi-Fi access equipment, which are used for solving the problem of low accuracy in filtering the Wi-Fi access equipment in the prior art. The method specifically comprises the following steps: the filtering equipment adopts a directional antenna to indicate Wi-Fi access equipment to send an association request message to the filtering equipment; the association request message is used for requesting to access the filtering equipment; and the filtering equipment receives an association request message sent to the filtering equipment by the Wi-Fi access equipment and determines that the Wi-Fi access equipment is positioned in the broadcast range of the directional antenna.

Description

Method and device for filtering Wi-Fi access equipment
Technical Field
The invention relates to the technical field of communication, in particular to a method and a device for filtering Wi-Fi access equipment.
Background
With the increase of social demands and the progress of science and technology, information technology has increasingly merged into daily life. Currently, there is a great demand for filtering of Wireless Fidelity (Wi-Fi) access devices (such as smart phones, notebooks, tablets, and the like), such as counting Wi-Fi access devices passing through the gate of a court.
At present, a commonly used filtering method for Wi-Fi access devices is to collect, by taking statistics of scenes of Wi-Fi access devices passing through a court gate as an example, messages sent by surrounding Wi-Fi access devices by a filtering apparatus first, and calculate Signal Strength (RSSI) corresponding to the collected messages. And then, the filtering device determines the position of the Wi-Fi access equipment which sends the message according to the RSSI corresponding to the message. And then filtering out the Wi-Fi access equipment which is not positioned at the door of the court by the filtering device, and counting the filtered Wi-Fi access equipment. However, since the RSSI of the packet is easily interfered by the environment, the accuracy of calculating the position according to the RSSI is low, which results in low accuracy of filtering the Wi-Fi access device.
Disclosure of Invention
The embodiment of the invention provides a method and a device for filtering Wi-Fi access equipment, which are used for solving the problem of low accuracy in filtering the Wi-Fi access equipment in the prior art.
In a first aspect, an embodiment of the present invention provides a method for filtering Wi-Fi access devices, including:
the filtering equipment adopts a directional antenna to indicate Wi-Fi access equipment to send an association request message to the filtering equipment; the association request message is used for requesting to access the filtering equipment;
and the filtering equipment receives an association request message sent to the filtering equipment by the Wi-Fi access equipment and determines that the Wi-Fi access equipment is positioned in the broadcast range of the directional antenna.
In the embodiment of the invention, the directional antenna is adopted by the filtering equipment to indicate the Wi-Fi access equipment to send the association request message, so that only the Wi-Fi access equipment positioned in the broadcasting range of the directional antenna can send the association request message under the indication of the filtering equipment, therefore, the filtering equipment can determine that the Wi-Fi access equipment is positioned in the broadcasting range of the directional antenna when receiving the association request message sent by the Wi-Fi access equipment, and then the Wi-Fi access equipment positioned in other area ranges is filtered.
With reference to the first aspect, in a first possible implementation manner of the first aspect, a filter device that indicates, by using a directional antenna, a Wi-Fi access device to send an association request packet to the filter device includes:
the filtering equipment monitors a detection request message sent by the Wi-Fi access equipment; the detection request message carries identification information of a first AP and is used for detecting the first AP;
the filtering device masquerading as the first AP based on identification information of the first AP;
and the filtering equipment adopts the directional antenna to send a detection response message to the Wi-Fi access equipment.
With reference to the first aspect, in a second possible implementation manner of the first aspect, a filter device that indicates, by using a directional antenna, a Wi-Fi access device to send an association request packet to the filter device includes:
the filtering equipment monitors a data message sent by the Wi-Fi access equipment and analyzes identification information of a second AP carried in the data message;
the filtering device masquerading as the second AP based on identification information of the second AP;
the filtering equipment adopts the directional antenna to send a disassociation message to the Wi-Fi access equipment; the disassociation message is used to instruct the Wi-Fi access device to disassociate from the second AP.
With reference to the first aspect, in a third possible implementation manner of the first aspect, a filter device that indicates, by using a directional antenna, a Wi-Fi access device to send an association request packet to the filter device includes:
the filtering equipment broadcasts a beacon message by using the directional antenna;
and when receiving an association request message sent by the Wi-Fi access equipment based on the beacon message, the filtering equipment determines that the Wi-Fi access equipment is located in the broadcast range of the directional antenna.
With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the broadcasting, by the filtering device, a beacon message by using the directional antenna includes:
and the filtering equipment obtains a multi-channel wireless network by multiplexing the directional antenna and broadcasts a beacon message through the multi-channel wireless network.
In a second aspect, an embodiment of the present invention provides an apparatus for filtering a Wi-Fi access device, including:
the device comprises a first wifi module, a second wifi module and a first communication module, wherein the first wifi module is used for adopting a directional antenna to indicate Wi-Fi access equipment to send an association request message to a device, and the association request message is used for requesting to access the device; receiving an association request message sent to the device by the Wi-Fi access equipment; the first wifi module is in an AP working mode;
and the determining module is used for determining that the Wi-Fi access equipment is positioned in the broadcast range of the directional antenna when the first wifi module receives the association request message sent by the Wi-Fi access equipment to the device.
With reference to the second aspect, in a first possible implementation manner of the second aspect, the apparatus further includes a second wifi module; the second wifi module is in a standard working mode;
the second wifi module is used for monitoring a detection request message sent by the Wi-Fi access equipment; the detection request message carries identification information of a first AP and is used for detecting the first AP; disguising the first wifi module as the first AP based on the identification information of the first AP;
the first wifi module is specifically configured to, when the directional antenna is used to instruct the Wi-Fi access device to send the association request packet:
and sending a probe response message to the Wi-Fi access equipment by adopting the directional antenna.
With reference to the second aspect, in a second possible implementation manner of the second aspect, the apparatus further includes a second wifi module; the second wifi module is in a standard working mode;
the second wifi module is used for monitoring a data message sent by the Wi-Fi access device and analyzing identification information of a second AP carried in the data message; disguising the first wifi module as the second AP based on the identification information of the second AP;
the first wifi module is specifically configured to, when the directional antenna is used to instruct the Wi-Fi access device to send the association request packet:
sending a disassociation message to the Wi-Fi access equipment by adopting the directional antenna; the disassociation message is used to instruct the Wi-Fi access device to disassociate from the second AP.
With reference to the second aspect, in a third possible implementation manner of the second aspect, the first wifi module, when using a directional antenna to instruct the Wi-Fi access device to send the association request packet, is specifically configured to:
broadcasting a beacon message by using the directional antenna; and when receiving an association request message sent by the Wi-Fi access equipment based on the beacon message, determining that the Wi-Fi access equipment is located in the broadcast range of the directional antenna.
With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the first wifi module, when the directional antenna is adopted to broadcast the beacon message, is specifically configured to:
and multiplexing the directional antenna to obtain a multi-path wireless network, and broadcasting a beacon message through the multi-path wireless network.
In the embodiment of the invention, the directional antenna is adopted by the filtering equipment to indicate the Wi-Fi access equipment to send the association request message, so that only the Wi-Fi access equipment positioned in the broadcasting range of the directional antenna can send the association request message under the indication of the filtering equipment, therefore, the filtering equipment can determine that the Wi-Fi access equipment is positioned in the broadcasting range of the directional antenna when receiving the association request message sent by the Wi-Fi access equipment, and then the Wi-Fi access equipment positioned in other area ranges is filtered.
Drawings
Fig. 1 is a schematic flowchart of a method for filtering Wi-Fi access devices according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a method for instructing a Wi-Fi access device to send an association request packet according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating another method for filtering Wi-Fi access devices according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating another method for filtering Wi-Fi access devices according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a device for filtering Wi-Fi access devices according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a method and a device for filtering Wireless Fidelity (WiFi) access equipment, which are used for solving the problem of low accuracy in filtering the Wi-Fi access equipment in the prior art. The method and the device are based on the same inventive concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, a schematic diagram of a method for filtering a Wi-Fi Access device according to an embodiment of the present invention is shown, where the method for filtering a Wi-Fi Access device may be applied to a device using a directional antenna, the device may have two built-in wifi modules, i.e., a module a and a module B, where the module a operates in a Wireless Access Point (AP) mode and supports a simultaneous multi-Service Set Identifier (SSID) function, and the SSID is a common free public hotspot; the module B works in a hybrid mode and is used for monitoring messages of surrounding wifi equipment, wherein the hybrid mode is a standard working mode of the wifi module, and the wifi module in the standard working mode can receive all messages.
The method may specifically comprise the following:
s101, the filtering equipment adopts a directional antenna to indicate Wi-Fi access equipment to send a correlation request message to the filtering equipment.
The association request message is used for requesting to access the filtering device.
The filtering device may be a single device, or an AP device that implements the method may be applied.
The Wi-Fi access device can be a smart phone, a tablet, a notebook computer and other devices comprising a wifi module.
S102, the filtering device receives an association request message sent by the Wi-Fi access device to the filtering device, and determines that the Wi-Fi access device is located in a broadcasting range of the directional antenna.
In the embodiment of the invention, the directional antenna is adopted by the filtering equipment to indicate the Wi-Fi access equipment to send the association request message, so that only the Wi-Fi access equipment positioned in the broadcasting range of the directional antenna can send the association request message under the indication of the filtering equipment, therefore, the filtering equipment can determine that the Wi-Fi access equipment is positioned in the broadcasting range of the directional antenna when receiving the association request message sent by the Wi-Fi access equipment, thereby filtering the Wi-Fi access equipment positioned in other area ranges, compared with the prior art that the position of the Wi-Fi access equipment is determined by RSSI, the method provided by the embodiment of the invention is not easily interfered by the environment, effectively improves the accuracy when filtering the Wi-Fi access equipment, does not need to perform complex calculation based on RSSI, and reduces the calculation amount, in addition, the operation is simple and reliable through the receiving-sending interaction process of the related messages.
Optionally, the filtering device uses a directional antenna to instruct the Wi-Fi access device to send the association request packet to the filtering device, which may be implemented by, but is not limited to, the following manner:
mode one, as shown in fig. 2:
s201, the filtering device monitors a detection request message sent by the Wi-Fi access device; the detection request message carries identification information of a first AP, and is used for detecting the first AP.
The identification information may include a Basic Service Set Identifier (BSSID), SSID, and the like.
S202, the filtering device masquerades as the first AP based on the identification information of the first AP.
Specifically, the module B in the filtering device may set the identification information of the module a in the filtering device to be the same as the identification information of the first AP, so as to pretend to be the first AP.
S203, the filtering device sends a detection response message to the Wi-Fi access device by adopting the directional antenna.
Wherein, the module B may be configured to perform steps S201 and S202. Module a masquerading as the first AP may perform step S203.
Mode two, as shown in fig. 3:
s301, the filtering device monitors a data message sent by the Wi-Fi access device and analyzes identification information of a second AP carried in the data message.
S302, the filtering device masquerades as the second AP based on the identification information of the second AP.
S303, the filtering device adopts the directional antenna to send a disassociation message to the Wi-Fi access device; the disassociation message is used to instruct the Wi-Fi access device to disassociate from the second AP.
Wherein, the module B may be configured to perform steps S301 and S302. Module a masquerading as the first AP may perform step S303.
A third way, where the third way can be performed by module a, as shown in fig. 4:
s401, the filtering equipment adopts the directional antenna to broadcast beacon messages;
s402, when the filter device receives an association request message sent by the Wi-Fi access device based on the beacon message, the filter device determines that the Wi-Fi access device is located in the broadcast range of the directional antenna.
In a possible implementation manner, the filtering device uses the directional antenna to broadcast the beacon message, and may obtain multiple wireless networks by multiplexing the directional antenna, and broadcast the beacon message through the multiple wireless networks. The filtering device increases the probability of inducing the wifi access device to send the association request message by supporting multiple paths of SSIDs at the same time.
In the embodiment of the invention, the directional antenna is adopted by the filtering equipment to indicate the Wi-Fi access equipment to send the association request message, so that only the Wi-Fi access equipment positioned in the broadcasting range of the directional antenna can send the association request message under the indication of the filtering equipment, therefore, the filtering equipment can determine that the Wi-Fi access equipment is positioned in the broadcasting range of the directional antenna when receiving the association request message sent by the Wi-Fi access equipment, thereby filtering the Wi-Fi access equipment positioned in other area ranges, compared with the prior art that the position of the Wi-Fi access equipment is determined by RSSI, the method provided by the embodiment of the invention is not easily interfered by the environment, effectively improves the accuracy when filtering the Wi-Fi access equipment, does not need to perform complex calculation based on RSSI, and reduces the calculation amount, in addition, the operation is simple and reliable through the receiving-sending interaction process of the related messages.
Based on the same inventive concept of the method embodiment corresponding to fig. 1, an embodiment of the present invention provides an apparatus 50 for filtering Wi-Fi access devices, where the apparatus 50 has a structure as shown in fig. 5, and includes a first wifi module 51 and a determination module 52, where:
a first wifi module 51, configured to instruct a Wi-Fi access device to send an association request packet to a device by using a directional antenna, where the association request packet is used to request access to the device; receiving an association request message sent to the device by the Wi-Fi access equipment; wherein, the first wifi module 51 is in an AP working mode;
a determining module 52, configured to determine that the Wi-Fi access device is located within a broadcast range of the directional antenna when the first wifi module 51 receives an association request packet sent by the Wi-Fi access device to the apparatus.
With reference to the second aspect, in a first possible implementation manner of the second aspect, the apparatus further includes a second wifi module 53; the second wifi module 53 is in a standard operating mode;
the second wifi module 53 is configured to monitor a detection request message sent by the Wi-Fi access device; the detection request message carries identification information of a first AP and is used for detecting the first AP; disguising the first wifi module 51 as the first AP based on the identification information of the first AP;
the first wifi module 51, when using the directional antenna to instruct the Wi-Fi access device to send the association request packet, is specifically configured to:
and sending a probe response message to the Wi-Fi access equipment by adopting the directional antenna.
With reference to the second aspect, in a second possible implementation manner of the second aspect, the apparatus further includes a second wifi module 53; the second wifi module 53 is in a standard operating mode;
the second wifi module 53 is configured to monitor a data packet sent by the Wi-Fi access device, and analyze identification information of a second AP carried in the data packet; disguising the first wifi module 51 as the second AP based on the identification information of the second AP;
the first wifi module 51, when using the directional antenna to instruct the Wi-Fi access device to send the association request packet, is specifically configured to:
sending a disassociation message to the Wi-Fi access equipment by adopting the directional antenna; the disassociation message is used to instruct the Wi-Fi access device to disassociate from the second AP.
With reference to the second aspect, in a third possible implementation manner of the second aspect, the first wifi module 51, when using a directional antenna to instruct a Wi-Fi access device to send an association request packet, is specifically configured to:
broadcasting a beacon message by using the directional antenna; and when receiving an association request message sent by the Wi-Fi access equipment based on the beacon message, determining that the Wi-Fi access equipment is located in the broadcast range of the directional antenna.
With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the first wifi module 51 is specifically configured to, when the directional antenna is used to broadcast a beacon message:
and multiplexing the directional antenna to obtain a multi-path wireless network, and broadcasting a beacon message through the multi-path wireless network.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (8)

1. A method of filtering Wi-Fi access devices, comprising:
the filtering equipment adopts a directional antenna to indicate Wi-Fi access equipment to send an association request message to the filtering equipment; the association request message is used for requesting to access the filtering equipment; the method for sending the association request message to the filtering device by adopting the directional antenna to indicate the Wi-Fi access device comprises the following steps: the filtering equipment broadcasts a beacon message by using the directional antenna; the filtering device determines that the Wi-Fi access device is located in the broadcast range of the directional antenna when receiving an association request message sent by the Wi-Fi access device based on the beacon message;
and the filtering equipment receives an association request message sent to the filtering equipment by the Wi-Fi access equipment and determines that the Wi-Fi access equipment is positioned in the broadcast range of the directional antenna.
2. The method of claim 1, wherein a filtering device using a directional antenna to instruct a Wi-Fi access device to send an association request message to the filtering device, comprises:
the filtering equipment monitors a detection request message sent by the Wi-Fi access equipment; the detection request message carries identification information of a first AP and is used for detecting the first AP;
the filtering device masquerading as the first AP based on identification information of the first AP;
and the filtering equipment adopts the directional antenna to send a detection response message to the Wi-Fi access equipment.
3. The method of claim 1, wherein a filtering device using a directional antenna to instruct a Wi-Fi access device to send an association request message to the filtering device, comprises:
the filtering equipment monitors a data message sent by the Wi-Fi access equipment and analyzes identification information of a second AP carried in the data message;
the filtering device masquerading as the second AP based on identification information of the second AP;
the filtering equipment adopts the directional antenna to send a disassociation message to the Wi-Fi access equipment; the disassociation message is used to instruct the Wi-Fi access device to disassociate from the second AP.
4. The method of claim 1, wherein the filtering device broadcasting the beacon message using the directional antenna comprises:
and the filtering equipment obtains a multi-channel wireless network by multiplexing the directional antenna and broadcasts a beacon message through the multi-channel wireless network.
5. An apparatus for filtering Wi-Fi access devices, comprising:
the device comprises a first wifi module, a second wifi module and a first communication module, wherein the first wifi module is used for adopting a directional antenna to indicate Wi-Fi access equipment to send an association request message to a device, and the association request message is used for requesting to access the device; receiving an association request message sent to the device by the Wi-Fi access equipment; the first wifi module is in an AP working mode; the first wifi module is specifically configured to, when the directional antenna is used to instruct the Wi-Fi access device to send the association request packet: broadcasting a beacon message by using the directional antenna; when an association request message sent by the Wi-Fi access equipment based on the beacon message is received, determining that the Wi-Fi access equipment is located in a broadcast range of the directional antenna;
and the determining module is used for determining that the Wi-Fi access equipment is positioned in the broadcast range of the directional antenna when the first wifi module receives the association request message sent by the Wi-Fi access equipment to the device.
6. The apparatus of claim 5, wherein the apparatus further comprises a second wifi module; the second wifi module is in a standard working mode;
the second wifi module is used for monitoring a detection request message sent by the Wi-Fi access equipment; the detection request message carries identification information of a first AP and is used for detecting the first AP; disguising the first wifi module as the first AP based on the identification information of the first AP;
the first wifi module is specifically configured to, when the directional antenna is used to instruct the Wi-Fi access device to send the association request packet:
and sending a probe response message to the Wi-Fi access equipment by adopting the directional antenna.
7. The apparatus of claim 5, wherein the apparatus further comprises a second wifi module; the second wifi module is in a standard working mode;
the second wifi module is used for monitoring a data message sent by the Wi-Fi access device and analyzing identification information of a second AP carried in the data message; disguising the first wifi module as the second AP based on the identification information of the second AP;
the first wifi module is specifically configured to, when the directional antenna is used to instruct the Wi-Fi access device to send the association request packet:
sending a disassociation message to the Wi-Fi access equipment by adopting the directional antenna; the disassociation message is used to instruct the Wi-Fi access device to disassociate from the second AP.
8. The apparatus of claim 5, wherein the first wifi module, when using the directional antenna to broadcast the beacon message, is specifically configured to:
and multiplexing the directional antenna to obtain a multi-path wireless network, and broadcasting a beacon message through the multi-path wireless network.
CN201810105876.0A 2018-02-02 2018-02-02 Method and device for filtering Wi-Fi access equipment Active CN108430075B (en)

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