CN114916046B

CN114916046B - Wireless scanning method, system, wireless device, network device and storage medium

Info

Publication number: CN114916046B
Application number: CN202210617701.4A
Authority: CN
Inventors: 张润丰; 李民聪
Original assignee: TP Link Technologies Co Ltd
Current assignee: TP Link Technologies Co Ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2024-04-30
Anticipated expiration: 2042-06-01
Also published as: CN114916046A

Abstract

The present application relates to the field of wireless communications technologies, and in particular, to a wireless scanning method, a system, a wireless device, a network device, and a storage medium. The system comprises: the wireless device broadcasts a probe request on a first channel, and after the probe request is broadcast, the wireless device switches from the first channel to a second channel; the first access point receives a detection request broadcast by the wireless equipment, determines a second access point associated with the wireless equipment based on the detection request, and reports detection response information to the second access point; the second access point receives a detection request broadcast by the wireless equipment, receives and gathers detection response information reported by the first access point based on the detection request, and generates scanning result information; the wireless device sends a scanning result request to the second access point when the scanning period is over; the second access point receives a scanning result request sent by the wireless device, and sends scanning result information to the wireless device based on the scanning result request. The method can effectively improve the scanning efficiency and ensure the quality of wireless data communication.

Description

Wireless scanning method, system, wireless device, network device and storage medium

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a wireless scanning method, a system, a wireless device, a network device, and a storage medium.

Background

With the continuous rise of the internet, the mobile demand is increasingly prominent, and the demand for wireless interconnection is also becoming stronger. According to the IEEE802.11 wireless networking protocol, a workstation must undergo a double identification operation prior to joining any compatible networks, a process known as scanning (scannig) in the area where existing networks are identified. The purpose of scanning is two, one is to provide the user with discovery and selection of the desired network; the other is used for screening the optimal network in the environment, and optimizing the communication quality of the equipment in the mobile scene by combining the roaming function. Scanning modes can be divided into active scanning (active) and passive scanning (passive); according to different strategies of switching channels, scanning can be divided into foreground scanning (foreground scan) and background scanning (background scanning); further, different scanning strategies can be adopted according to the actual application scene requirements, for example, an active scanning and background scanning strategy is adopted.

Aiming at the current scanning mode and scanning strategy, a fundamental problem is not solved: the scanning success rate contradicts the communication quality. The scan success rate requires that the scan channel residence time be as long as possible, while the communication quality requires that the scan channel residence time be as short as possible.

How to improve the scanning efficiency while avoiding influencing normal wireless data communication is a problem to be considered currently.

Disclosure of Invention

In view of the above, the embodiments of the present application provide a wireless scanning method, a system, a wireless device, a network device, and a storage medium, which can effectively improve scanning efficiency and ensure quality of wireless data communication.

A first aspect of an embodiment of the present application provides a wireless scanning method, applied to a wireless device, where the wireless device is associated with a second access point, the method including:

After a first channel broadcasts a detection request, switching from the first channel to a second channel, wherein the first channel is used for scanning, and the second channel is a current working channel of the wireless device;

Transmitting a scan result request to the second access point at the end of the scan period;

And receiving the scanning result information sent by the second access point based on the scanning result request, wherein the scanning result information comprises detection response information reported by the first access point based on the detection request.

In a possible implementation manner of the first aspect, before the broadcasting the probe request on the first channel, the method further includes:

Acquiring link state information of the second access point;

and if the link state information does not meet the preset link state condition, broadcasting the detection request on the first channel.

A second aspect of an embodiment of the present application provides a wireless scanning method, the method including:

Receiving a detection request broadcast by wireless equipment, and determining a second access point associated with the wireless equipment based on the detection request;

And reporting the detection response information to the second access point.

A third aspect of an embodiment of the present application provides a wireless scanning method, applied to a second access point, the method including:

receiving a detection request broadcast by an associated wireless device;

Receiving and summarizing detection response information reported by a first access point based on the detection request, and generating scanning result information;

And receiving a scanning result request sent by the wireless equipment, and sending the scanning result information to the wireless equipment based on the scanning result request.

A fourth aspect of the embodiments of the present application provides a wireless scanning method, applied to a wireless scanning system, the wireless scanning system including: a wireless device, a first access point, and a second access point, wherein the second access point is associated with the wireless device; the wireless scanning method comprises the following steps:

The wireless device broadcasts a detection request on a first channel and switches from the first channel to a second channel after broadcasting the detection request, wherein the first channel is used for scanning, and the second channel is a current working channel of the wireless device;

The first access point receives a detection request broadcast by the wireless equipment, determines a second access point associated with the wireless equipment based on the detection request, and reports detection response information to the second access point;

the second access point receives a detection request broadcast by the wireless device, receives and gathers detection response information reported by the first access point based on the detection request, and generates scanning result information;

The wireless device sends a scanning result request to the second access point when the scanning period is over;

the second access point receives a scanning result request sent by the wireless device and sends the scanning result information to the wireless device based on the scanning result request.

A fifth aspect of an embodiment of the present application provides a wireless scanning system, the wireless scanning system including a wireless device, a first access point, and a second access point, wherein the second access point is associated with the wireless device;

the wireless device is configured to switch from a first channel to a second channel after broadcasting a probe request on the first channel, where the first channel is used for scanning, and the second channel is a current working channel of the wireless device.

The first access point is used for receiving a detection request broadcast by the wireless equipment and determining a second access point associated with the wireless equipment.

The second access point is used for receiving a detection request broadcast by the associated wireless equipment, receiving and summarizing detection response information reported by the first access point based on the detection request, and generating scanning result information.

The wireless device is further configured to send a scan result request to the second access point when the scan period ends;

the second access point is further configured to receive a scan result request sent by the wireless device, and send the scan result information to the wireless device based on the scan result request.

A sixth aspect of the embodiments of the present application provides a wireless device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the wireless scanning method as provided in the first aspect of the embodiments of the present application when the computer program is executed.

A seventh aspect of the embodiments of the present application provides a network device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the wireless scanning method as provided in the first or second aspect of the embodiments of the present application when the computer program is executed.

An eighth aspect of the embodiments of the present application provides a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the wireless scanning method as provided in the first aspect of the embodiments of the present application.

A ninth aspect of the embodiments of the present application provides a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the wireless scanning method as provided in the second or third aspect of the embodiments of the present application.

A tenth aspect of the embodiments of the present application provides a computer program product for, when run on a wireless device, causing the wireless device to perform the steps of the wireless scanning method according to the first aspect of the embodiments of the present application. The computer program product, when run on a network device, causes the network device to perform the steps of the wireless scanning method according to the second or third aspect of the embodiments of the present application.

In the embodiment of the application, after the wireless device broadcasts a detection request on a first channel, the first channel is switched to a second channel, a first access point receives the detection request, determines a second access point associated with the wireless device based on the detection request, reports detection response information to the second access point instead of directly sending the detection response information to the wireless device, the second access point receives the detection request broadcast by the wireless device, receives and gathers the detection response information reported by the first access point based on the detection request, generates scanning result information, and when the scanning period is ended, the wireless device sends a scanning result request to the second access point, and the second access point receives the scanning result request sent by the wireless device and sends the scanning result information to the wireless device based on the scanning result request. The scheme can reduce the time consumption of the wireless device in switching between the scanning channel and the working channel and compress the residence time of the wireless device in the scanning channel, thereby improving the communication quality.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a system architecture diagram of a wireless scanning system according to an embodiment of the present application;

Fig. 2 is a flowchart of an implementation of a wireless scanning method on a wireless device side according to an embodiment of the present application;

Fig. 3 is a flowchart of an implementation of triggering scanning in a wireless scanning method according to an embodiment of the present application;

fig. 4 is a flowchart of an implementation of a wireless scanning method at a first access point side according to an embodiment of the present application;

fig. 5 is a flowchart of an implementation of a wireless scanning method at a second access point provided by an embodiment of the present application;

Fig. 6 is a flowchart of a specific implementation of sending the scan result information to the wireless device in the wireless scanning method according to the embodiment of the present application;

fig. 7 is an interactive flowchart of a wireless scanning method according to an embodiment of the present application;

fig. 8.0 to 8.2 are block diagrams illustrating a wireless scanning device according to an embodiment of the present application;

fig. 9 is a schematic diagram of a wireless device according to an embodiment of the present application;

Fig. 10 is a schematic diagram of a network device according to an embodiment of the present application.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular device structures, techniques, etc. in order to provide a thorough understanding of embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

Furthermore, the terms "first," "second," "third," and the like in the description of the present specification and in the appended claims, are used for distinguishing between descriptions and not necessarily for indicating or implying a relative importance.

Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

In the prior art, on one hand, when there are many APs (access points) in the environment, each AP receiving a Probe Request frame broadcast by a Station (STA) replies a unicast Probe Response frame, and the Probe Response frame is usually larger and sent at a low rate, which requires 10-40 ms on the air interface; while passive scanning does not occupy extra air interface resources, because the Beacon frame of the AP is sent at a timing (usually 100 ms), the STA needs to monitor for more than 100ms on each channel to ensure the integrity of the detection result, if the channel monitoring time is too short, the AP sends the Beacon frame after the STA switches channels, and the STA does not have the AP in the scanning result. On the other hand, when a wireless device resides on a certain channel, it cannot receive messages on other channels, and scanning by the STA on a different channel may affect data communication on the working channel. The residence time of the STA on the scanning channel can be reduced by the strategy of active scanning and background scanning, and the background scanning can avoid overlong time for leaving the working channel caused by continuously scanning a plurality of channels by returning to the working channel once every time one channel is scanned.

However, the scan success rate requires that the residence time at the scan channel be as long as possible, while the communication quality requires that the scan channel residence time be as short as possible. How to improve the scanning efficiency while avoiding influencing normal wireless data communication is a current problem.

In view of the above problems, embodiments of the present application provide a wireless scanning method, apparatus, wireless device, and storage medium, which can reduce the time consumed by the wireless device in switching between a scanning channel and a working channel, and compress the residence time in the scanning channel, thereby improving the communication quality. And receiving a scanning result request sent by the wireless equipment, and sending the scanning result information to the wireless equipment based on the scanning result request.

In order to illustrate the technical scheme of the application, the following description is made by specific examples.

Fig. 1 shows a system architecture diagram of a wireless scanning system according to a first embodiment of the present invention, which is described in detail below: for convenience of explanation, only portions relevant to the embodiments of the present invention are shown.

Referring to fig. 1, the wireless scanning system comprises a wireless device 1, a first access point 2 and a second access point 3, wherein the second access point 3 is associated with the wireless device 1;

the wireless device 1 is configured to switch from a first channel to a second channel after broadcasting a probe request, where the first channel is used for scanning, and the second channel is a current working channel of the wireless device 1.

The first access point 2 is configured to receive a probe request broadcast by the wireless device 1, and determine a second access point 3 associated with the wireless device 1.

The second access point 3 is configured to receive a probe request broadcast by the associated wireless device 1, receive and aggregate probe response information reported by the first access point 2 based on the probe request, and generate scan result information.

The wireless device 1 is further configured to send a scan result request to the second access point 3 at the end of a scan period;

The second access point 3 is further configured to receive a scan result request sent by the wireless device 1, and send the scan result information to the wireless device 1 based on the scan result request.

The wireless device 1 is further configured to receive and store the scan result information sent by the second access point.

In one embodiment, the wireless device 1 is a terminal in a wireless network. The wireless device 1 may be a STA station. The wireless device 1 may also be a customer wireless device CPE, specifically a mobile signal access device that may receive a mobile signal and forward the mobile signal as a WIFI signal. The first access point 2 and the second access point 3 are network devices different from the wireless device 1. In this embodiment, the first access point 2 and the second access point 3 are both wireless access points AP, (WirelessAccessPoint), and in this embodiment, the wireless device 1 is a scanning initiator, and the first access point 2 and the second access point 3 are network service terminals.

In some embodiments, the wireless scanning system may use WIFI technology or 3G/4G/5G technology to establish a wireless connection between the wireless device 1 and the access point.

In some embodiments, one or more first access points 2 are present in the environment in which the wireless device 1 is located.

Taking a scene as an example, an STA is installed on a moving AVG trolley, roaming among a plurality of APs is needed, the STA also needs to scan and select an AP with the optimal signal before switching the APs in roaming, so that the AVG trolley can normally perform data interaction with a network through the STA, and meanwhile, the scanning result of the STA is as complete as possible and the scanning success rate is as high as possible. The STA is currently associated with AP2 and the channel it uses to communicate with AP2 is the working channel. After the STA broadcasts the detection request on the first channel, the scanning channel is switched to the working channel, so that the situation that the AVG trolley leaves the working channel too long is avoided, the AVG trolley and the network are guaranteed to perform data interaction normally, the AP1 directly reports the detection response information to the AP2 which is currently accessed by the STA after receiving the broadcast detection request of the STA, and the AP2 performs sorting and screening according to the detection response information reported by a plurality of APs 1. And when the STA finishes the scanning period, sending a scanning result request to the AP2, and feeding back the summarized detection response information to the STA by the AP 2. The scanning result is managed through the AP2 end, so that the communication quality of the AVG trolley can be guaranteed, the phenomenon that the STA stays in a scanning channel for too long to influence the AVG trolley to perform normal data interaction is avoided, and meanwhile the scanning success rate can be guaranteed.

Fig. 2 shows an implementation flow of a wireless scanning method provided by an embodiment of the present application, where an execution end of the embodiment of the present application is the wireless device 1 in fig. 1, and the wireless device 1 is associated with a second access point. The method flow may include the following steps S101 to S103.

S101: and after the first channel broadcasts the detection request, switching from the first channel to a second channel, wherein the first channel is used for scanning, and the second channel is the current working channel of the wireless equipment.

In the embodiment of the application, the wireless device does not wait to receive the detection response information after broadcasting the detection request through the first channel, and is instantly switched from the first channel to the second channel, and does not stay for a long time in the scanning channel, so that the current network communication quality can be effectively ensured.

Illustratively, the wireless device does not wait for the Probe Response of the AP after broadcasting the Probe Request frame on the scanning channel, but immediately switches back to the working channel for normal communication on the scanning channel, thereby guaranteeing the wireless data communication quality.

S102: and sending a scanning result request to the second access point when the scanning period is over.

The second access point is an access point associated with a wireless device. In some implementations, the second access point is an access point to which the wireless device is currently connected. In this embodiment, the second access point is configured to manage probe response information reported by the first access point for a probe request broadcasted by the wireless device.

The wireless device scans for a scanning period, and at the beginning of the scanning period, the wireless device broadcasts a probe request on a first channel, and at the end of the scanning period, the wireless device sends a scanning result request to a second access point.

The scan result request is used for indicating a second access point associated with the wireless device to report scan result information.

The probe request will typically contain a wide variety of IEs, such as a service set identifier SSID (Service Set Identifier) and a supported rate (Supported Rates), the SSID identifying the network identity, the supported rate identifying the data rate supported by the wireless device. In the embodiment of the present application, the probe request also carries a customized private protocol. The private protocol may be set up as desired by the user. In this embodiment, the private protocol includes a scan type, and the scan type includes a normal scan and a fast scan. If the scanning type is common scanning, the private protocol indicates the first access point to directly report the detection response information to the wireless equipment. If the scanning type is fast scanning, the private protocol indicates the first access point to report the detection response information to a second access point associated with the wireless device, that is, the first access point does not report the detection response information directly to the wireless device sending the detection request, but reports the detection response information aiming at the detection request to the second access point. In the embodiment of the present application, the probe request further carries a device identifier of a second access point associated with the wireless device.

In some embodiments, if the probe request does not carry a custom private protocol, the scan type of the probe request defaults to a normal scan.

Typically, probe scan interactions are performed between the wireless device and the access point according to standard protocols, e.g., the wireless device sends Probe requests and the AP feeds back Probe responses. In this embodiment, during fast scanning, the wireless device immediately switches from the scanning channel to the working channel after broadcasting the Probe Request, and does not stay in the scanning channel to wait for the Probe Response of the AP in the current environment, and the AP does not directly feed back the Probe Response to the wireless device, so in this embodiment, the first access point may determine whether to report the Probe Response information directly to the wireless device or report the Probe Response information to the second access point associated with the wireless device according to the scanning type in the private protocol.

S103: and receiving the scanning result information sent by the second access point based on the scanning result request, wherein the scanning result information comprises detection response information reported by the first access point based on the detection request.

In the embodiment of the application, the wireless access equipment switches back to the working channel from the scanning channel after broadcasting the detection request, thereby ensuring normal data communication. And the detection response information reported by the first access point in the current environment is collected by the second access point associated with the wireless equipment to generate scanning result information and report the scanning result information.

In some embodiments, the wireless device also stores the scan result information.

In the embodiment of the application, the wireless device sends a scanning result request to the second access point in the second channel, namely the working channel, and receives the scanning result information sent by the second access point.

As a possible embodiment of the present application, as shown in fig. 3, before the first channel broadcasts the probe request, the wireless device further includes:

A1: and acquiring the link state information of the second access point. Generally, link state information includes signal strength, signal loading, interference, and the like.

A2: and if the link state information does not meet the preset link state condition, broadcasting the detection request on the first channel.

In this embodiment, the wireless device determines whether there is a need for scanning before broadcasting the probe request. And triggering scanning when judging that the link state information of the associated second access point does not meet the preset link state condition, and broadcasting a detection request on the first channel.

In a possible implementation manner, the link state information of the second access point specifically includes uplink signal strength of the wireless device relative to the second access point. And if the uplink signal strength of the wireless device relative to the second access point is less than or equal to a preset signal strength threshold, the wireless device broadcasts the detection request on the first channel.

In a possible implementation manner, the link state information of the second access point specifically includes a channel load of the second access point. And if the channel load of the second access point is overloaded, the wireless device broadcasts the detection request on the first channel.

In a possible implementation manner, the link state information of the second access point specifically includes an interference state of a channel of the second access point, where the interference state includes one of interference and no interference. And if the channel of the second access point has interference, the wireless equipment broadcasts the detection request on the first channel.

In the embodiment of the application, the wireless device determines whether to trigger scanning according to the link state information of the associated second access point, so as to avoid the influence of scanning on the communication quality as much as possible.

In some embodiments, the wireless device periodically triggers a scan, after which a probe request is broadcast on the first channel.

In some embodiments, the wireless device monitors the location of the wireless device in real time, and when the location of the wireless device changes, the wireless device is triggered to scan.

Taking an application scenario as an example, when an STA is associated under the AP1 and the signal quality is reduced to a certain threshold, the STA will initiate scanning, to detect whether there is a better AP in the environment, and parameters such as a scanned channel list are set by the user. When scanning, after the STA sends the Probe Request frame on the scanning channel, the STA does not wait for a Probe Response and immediately switches back to the working channel to perform normal communication. The private protocol is carried in the Probe Request frame sent by the STA, and it is declared that this is a fast scanning Probe Request frame. After receiving the fast scanning Probe Request, the AP in the environment does not directly reply to the STA by the Probe Response, but packages the information such as the Probe Response frame, the uplink rssi and the like into a scanning result message, reports the scanning result message to the AP1 associated with the STA through a private protocol, screens and manages the scanning result message by the AP1, and stores the scanning result message locally. After the STA finishes scanning, sending a scanning result request message to the AP1 through the private protocol, and delivering the sorted scanning result to the STA by the AP1, and storing the scanning result by the STA.

In the embodiment of the application, the wireless device immediately switches from the scanning channel to the working channel for normal communication after broadcasting the detection request by the first channel, so that the communication quality is ensured, and after the scanning period is finished, the wireless device sends the scanning result request to the second access point and receives the detection response information which is sent by the second access point and comprises the detection response information reported by the first access point, thereby effectively avoiding the wireless device from staying in the scanning channel for a long time to reduce the communication quality and improving the scanning efficiency.

Fig. 4 shows a flow of another implementation of the wireless scanning method according to the embodiment of the present application, where the execution end of the embodiment of the present application is the first access point 2 in fig. 1. The method flow may include the following steps S201 to S202.

S201: a probe request broadcast by a wireless device is received, and a second access point associated with the wireless device is determined based on the probe request.

In the embodiment of the present application, the probe request carries a customized private protocol, where the private protocol includes a scan type, and the scan type includes a normal scan and a fast scan. If the scanning type is common scanning, the private protocol indicates the first access point to directly report the detection response information to the wireless equipment. If the scanning type is fast scanning, the private protocol instructs the first access point to report detection response information to a second access point associated with the wireless device. And the first access point determines a second access point associated with the wireless device according to the device identifier of the second access point carried by the detection request.

S202: and reporting the detection response information to the second access point.

And the first access point reports the detection response information to the second access point based on the private protocol.

In the embodiment of the application, the first access point in the current environment does not directly feed back the detection response information to the wireless device sending the detection request, but sends the detection response to the second access point, and the second access point gathers the detection response information reported by each first access point to generate the scanning result information and reports the scanning result information to the wireless device. The current environment refers to the environment in which the wireless device is located.

The detection response information comprises equipment identification and response information of a first access point and link state information of the first access point. The link state information includes signal strength, signal loading, interference, etc. The link state information of the first access point may be used by the second access point to screen the wireless device for high quality wireless access points. The high-quality wireless access point may refer to a first access point with highest signal strength in the current environment.

In a possible implementation manner, the link state information of the first access point specifically includes uplink signal strength of the wireless device relative to the first access point.

In a possible implementation manner, the link state information of the first access point specifically includes a channel load of the first access point.

In a possible implementation manner, the link state information of the first access point specifically includes an interference state of a channel of the first access point, where the interference state includes one of interference and no interference.

In the embodiment of the application, after receiving the detection request sent by the wireless device, the first access point does not directly feed back the detection response information to the wireless device, but determines the second access point associated with the wireless device based on the detection request, reports the detection response information for the detection request to the second access point, and the wireless device does not need to stay in a scanning channel to wait for the detection response information, so that the communication quality can be effectively ensured.

Fig. 5 shows a flow of another implementation of the wireless scanning method according to the embodiment of the present application, where the execution end of the embodiment of the present application is the second access point 3 in fig. 1. The second access point 3 is associated with the wireless device 1 and the method flow may comprise the following steps S301 to S303.

S301: a probe request broadcast by an associated wireless device is received.

The second access point receives probe requests broadcast by the associated wireless device in real time.

S302: and receiving and summarizing the detection response information reported by the first access point based on the detection request, and generating scanning result information.

In one possible implementation, the probe request carries a custom private protocol. In this embodiment, the second access point receives and gathers probe response information reported by the first access point based on the private protocol, and generates scan result information.

In one possible implementation, in the current environment, the second access point may associate with one or more wireless devices, the probe request further includes a device identifier of the wireless device, and the probe response information further includes a device identifier of the wireless device. When the second access point associates a plurality of wireless devices, the second access point classifies the detection response information, reported by the first access point, for the same wireless device into the same data set according to the device identification of the associated wireless device, and the data set can be used as the data set identification by using the device identification of the wireless device. And the second access point generates scanning result information corresponding to the wireless device according to the device identification of the wireless device and the detection response information in the corresponding data set.

In one possible implementation manner, before the second access point reports the scanning result information to the wireless device, when the second access point receives a plurality of pieces of detection response information reported by the same second access point, the second access point reserves one piece of detection response information which is sent most recently by the second access point according to a sending timestamp of the detection response information, and rejects the rest pieces of detection response information reported by the second access point.

S303: and receiving a scanning result request sent by the wireless equipment, and sending the scanning result information to the wireless equipment based on the scanning result request.

The second access point receives a scanning result request sent by the wireless device in real time, wherein the scanning result request is used for indicating the second access point to report scanning result information to the wireless device.

The scanning result information comprises probe response information of a first access point in the current environment for a probe request

As a possible implementation manner of the present application, the probe response information includes response information and further includes link state information of the first access point, and fig. 6 shows a specific implementation flow of sending the scan result information to the wireless device in the method embodiment provided by the embodiment of the present application, which is described in detail below:

B1: and screening the summarized detection response information according to the link state information of the first access point. Specifically, the detection response information corresponding to the first access point of which the link state information does not meet the preset link state condition is screened out, and the detection response information corresponding to the first access point of which the link state information meets the preset link state condition is reserved.

In the embodiment of the application, the link state information of the first access point can be used for the second access point to screen high-quality wireless access points for wireless equipment. The high-quality wireless access point may refer to a first access point with highest signal strength in the current environment. Before the second access point receives a scanning result request sent by the wireless device, the second access point screens the detection response information reported by the first access points according to the link state information of each first access point, and eliminates the detection response information reported by the first access point with poor link state information.

In a possible implementation manner, the link state information of the first access point specifically includes uplink signal strength of the wireless device relative to the first access point. If the uplink signal strength of the wireless device relative to the first access point is greater than a preset signal strength threshold, reserving detection response information corresponding to the first access point.

Further, if the uplink signal strength of the wireless device relative to the first access point is less than or equal to a preset signal strength threshold, the detection response information corresponding to the first access point is screened out, or the first access point is incorporated into an alternative access point, and the detection information of the first access point is marked as an alternative.

In a possible implementation manner, the link state information of the first access point specifically includes a channel load of the first access point. And if the channel load of the first access point is within a preset load range, reserving detection response information corresponding to the first access point.

Further, if the channel load of the first access point is overloaded, the detection response information corresponding to the first access point is screened out, or the first access point is incorporated into an alternative access point, and the detection information of the first access point is marked as an alternative.

In a possible implementation manner, the link state information of the first access point specifically includes an interference state of a channel of the first access point. And if the first access point has no interference, reserving the detection response information corresponding to the first access point.

Further, if the first access point has interference, screening out detection response information corresponding to the first access point, or incorporating the first access point into an alternative access point, and marking the detection information of the first access point as an alternative.

In a possible implementation manner, the link state information of the first access point specifically includes uplink signal strength, channel load and interference state of the wireless device relative to the first access point. And if the uplink signal strength, the channel load and the interference state do not meet the preset conditions, screening out the detection response information corresponding to the first access point. And if at least two of the uplink signal strength, the channel load and the interference state meet preset conditions, reserving detection response information corresponding to the first access point.

Further, if only one of the uplink signal strength, the channel load and the interference state satisfies a preset condition, the first access point is brought into an alternative access point, and the detection information of the first access point is marked as an alternative. For example, if the uplink signal strength is greater than a preset signal strength threshold, and the channel load and the interference state do not meet the preset conditions, the first access point is included in the candidate access point, and the detection information of the first access point is marked as a candidate.

B2: and sending the detection response information obtained by screening to the wireless equipment.

In a possible implementation manner, the second access point performs descending order sorting on the probe response information reported by the plurality of first access points obtained by screening according to the link state information of the first access point in the probe response information, and the earlier the sorting is, the better the communication quality of the first access point is. And sending the ordered detection response information to the wireless equipment.

In the embodiment of the application, the second access point receives the detection request broadcast by the related wireless equipment, based on the detection request, the second access point is used as the proxy management of the wireless equipment to summarize the detection response information reported by the first access point and generate the scanning result information, and after receiving the scanning result request of the wireless equipment, the scanning result information is sent to the wireless equipment, so that the wireless equipment does not need to stay in a scanning channel for a long time, the communication quality is ensured, and the scanning efficiency of the wireless equipment can be improved.

Fig. 7 shows an interaction flow chart of the wireless scanning method provided by the embodiment of the present invention, and an execution body participating in the interaction flow includes the wireless device 1, the first access point 2 and the second access point 3 in fig. 1, and an implementation principle of the interaction flow is consistent with an implementation principle of each execution body side described in fig. 2 to 6, so that the interaction flow is only briefly described, and is not repeated:

1. The wireless device broadcasts a probe request on a first channel and switches from the first channel to a second channel after broadcasting the probe request;

2. the first access point receives a detection request broadcast by the wireless device;

3. the first access point determines a second access point associated with the wireless device based on the probe request;

4. the first access point reports detection response information to the second access point;

5. the second access point receives a detection request broadcast by the wireless device;

6. The second access point receives and gathers the detection response information reported by the first access point based on the detection request, and generates scanning result information;

7. The wireless device sends a scanning result request to the second access point when the scanning period is over;

8. The second access point receives a scanning result request sent by the wireless device and sends the scanning result information to the wireless device based on the scanning result request;

9. the wireless device is further configured to receive and store the scan result information sent by the second access point.

It should be understood that the sequence numbers of the steps in the foregoing embodiments do not mean the order of execution, and the execution order of the processes should be determined by the functions and the internal logic, and should not be construed as limiting the implementation process of the embodiments of the present application.

Fig. 8.0 to 8.2 show block diagrams of the wireless scanning apparatus according to the embodiment of the present application, and only the portions related to the embodiment of the present application are shown for convenience of explanation.

Referring to fig. 8.0, the apparatus is applied to a wireless device, the apparatus comprising: a probe scanning unit 801, a scanning result requesting unit 802, a scanning result receiving unit 803, wherein:

a probe scanning unit 801, configured to switch from a first channel to a second channel after a probe request is broadcast on the first channel, where the first channel is used for scanning, and the second channel is a current working channel of the wireless device;

A scan result request unit 802, configured to send a scan result request to the second access point when the scan period ends;

and a scan result receiving unit 803, configured to receive scan result information sent by the second access point based on the scan result request, where the scan result information includes probe response information reported by the first access point based on the probe request.

As a possible embodiment of the present application, the wireless scanning apparatus further includes:

A link state obtaining unit, configured to obtain link state information of the second access point;

the above-mentioned scout scanning unit 801 is also configured to: and if the link state information does not meet the preset link state condition, broadcasting the detection request on the first channel.

Referring to fig. 8.1, the apparatus is applied to a first access point, the apparatus comprising: a request acquisition and information determination unit 811, a response information reporting unit 812, wherein:

A request acquisition and information determination unit 811, configured to receive a probe request broadcast by a wireless device, and determine a second access point associated with the wireless device based on the probe request;

And a response information reporting unit 812, configured to report the probe response information to the second access point.

Referring to fig. 8.2, the apparatus is applied to a second access point, the apparatus comprising: a probe request receiving unit 821, a response information summarizing unit 822, and a result information reporting unit 823, wherein:

a probe request receiving unit 821 for receiving probe requests broadcast by associated wireless devices;

An information summary generating unit 822, configured to receive and aggregate probe response information reported by the first access point based on the probe request, and generate scan result information;

And the result information reporting unit 823 is used for receiving a scanning result request sent by the wireless device and sending the scanning result information to the wireless device based on the scanning result request.

As a possible implementation manner of the present application, the probe response information includes link state information of the first access point, and the resulting information reporting unit 823 includes:

The response information screening module is used for screening the summarized detection response information according to the link state information of the first access point;

and the response information reporting module is used for sending the detection response information obtained by screening to the wireless equipment.

Embodiments of the present application also provide a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of any one of the wireless scanning methods as shown in fig. 2 to 6.

Embodiments of the present application also provide a computer program product which, when run on a wireless device, causes the wireless device to perform the steps of implementing any one of the wireless scanning methods as represented in fig. 2 to 3.

Embodiments of the present application also provide a computer program product which, when run on a network device, causes the network device to perform the steps of implementing any one of the wireless scanning methods as represented in fig. 4 to 6.

Fig. 9 is a schematic diagram of a wireless device according to an embodiment of the present application. As shown in fig. 9, the wireless device 9 of this embodiment includes: a processor 90, a memory 91 and a computer program 92 stored in said memory 91 and executable on said processor 90. The processor 90, when executing the computer program 92, implements the steps in the embodiments of the respective wireless scanning methods described above, such as steps S101 to S103 shown in fig. 2. Or the processor 90, when executing the computer program 92, performs the functions of the modules/units of the device embodiments described above, e.g. the functions of the units 801 to 803 shown in fig. 8.0.

The computer program 92 may be divided into one or more modules/units, which are stored in the memory 91 and executed by the processor 90 to complete the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions describing the execution of the computer program 92 in the wireless device 9.

The Processor 90 may be a central processing unit (Central Processing Unit, CPU), other general purpose Processor, digital signal Processor (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), off-the-shelf Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 91 may be an internal storage unit of the wireless device 9, such as a hard disk or a memory of the wireless device 9. The memory 91 may also be an external storage device of the wireless device 9, such as a plug-in hard disk, a smart memory card (SMART MEDIA CARD, SMC), a Secure Digital (SD) card, a flash memory card (FLASH CARD) or the like, which are provided on the wireless device 9. Further, the memory 91 may also include both an internal storage unit and an external storage device of the wireless device 9. The memory 91 is used for storing the computer program and other programs and data required by the wireless device. The memory 91 may also be used for temporarily storing data that has been output or is to be output.

Fig. 10 is a schematic diagram of a network device according to an embodiment of the present application. As shown in fig. 10, the network device 10 of this embodiment includes: a processor 100, a memory 101 and a computer program 102 stored in the memory 101 and executable on the processor 100. The processor 100, when executing the computer program 102, implements the steps in the embodiments of the above-described respective wireless scanning methods, such as steps S201 to S202 shown in fig. 4, such as steps S301 to S303 shown in fig. 5. Or the processor 100, when executing the computer program 102, performs the functions of the modules/units in the above-described device embodiments, e.g. the functions of the units 811 to 813 shown in fig. 8.1, or the functions of the units 821 to 823 shown in fig. 8.2.

The computer program 102 may be partitioned into one or more modules/units that are stored in the memory 101 and executed by the processor 100 to complete the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions for describing the execution of the computer program 102 in the network device 10.

The Processor 100 may be a central processing unit (Central Processing Unit, CPU), other general purpose Processor, digital signal Processor (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), off-the-shelf Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The storage 101 may be an internal storage unit of the network device 10, such as a hard disk or a memory of the network device 10. The memory 101 may also be an external storage device of the network device 10, such as a plug-in hard disk, a smart memory card (SMART MEDIA CARD, SMC), a Secure Digital (SD) card, a flash memory card (FLASH CARD) or the like, which are provided on the network device 10. Further, the memory 101 may also include both internal storage units and external storage devices of the network device 10. The memory 101 is used to store the computer program and other programs and data required by the network device. The memory 101 may also be used to temporarily store data that has been output or is to be output.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above device may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.

It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the apparatus, the apparatus and the units described above may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another apparatus, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium may include content that is subject to appropriate increases and decreases as required by jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is not included as electrical carrier signals and telecommunication signals.

The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims

1. A wireless scanning method, applied to a wireless device, where the wireless device is associated with a second access point, where the second access point is configured to manage probe response information reported by a first access point for a probe request broadcast by the wireless device, where the probe request includes a device identifier of the wireless device, and the probe response information includes a device identifier of the wireless device, the method includes:

transmitting a scan result request to the second access point at the end of a scan period, the second access point being associable with one or more wireless devices;

Receiving scanning result information sent by the second access point based on the scanning result request, wherein the scanning result information comprises detection response information reported by the first access point based on the detection request; when the second access point associates a plurality of wireless devices, the second access point classifies the detection response information, reported by the first access point, for the same wireless device into the same data set according to the device identification of the associated wireless device, the data set can use the device identification of the wireless device as the data set identification, and the second access point generates scanning result information corresponding to the wireless device according to the device identification of the wireless device and the detection response information in the corresponding data set.

2. The method of claim 1, wherein prior to broadcasting the probe request on the first channel, further comprising:

Acquiring link state information of the second access point;

3. The method of claim 1, wherein the probe request carries a custom private protocol;

the sending a scan result request to the second access point includes:

and sending a scanning result request to the second access point based on the private protocol.

4. A wireless scanning method, applied to a first access point, the method comprising:

receiving a detection request broadcast by wireless equipment, wherein the detection request comprises equipment identification of the wireless equipment, and determining a second access point associated with the wireless equipment based on the detection request, wherein the second access point is used for managing detection response information reported by the first access point for the detection request broadcast by the wireless equipment, and the second access point can be associated with one or more wireless equipment;

Reporting detection response information to the second access point, wherein the detection response information comprises equipment identification of wireless equipment; when the second access point associates a plurality of wireless devices, the second access point classifies the detection response information, reported by the first access point, for the same wireless device into the same data set according to the device identification of the associated wireless device, the data set can use the device identification of the wireless device as the data set identification, and the second access point generates scanning result information corresponding to the wireless device according to the device identification of the wireless device and the detection response information in the corresponding data set.

5. The method of claim 4, wherein the probe response information comprises link state information of response information with the first access point.

6. The method of claim 4, wherein the probe request carries a custom private protocol.

7. A wireless scanning method, applied to a second access point, where the second access point is configured to manage probe response information reported by a first access point for a probe request broadcast by a wireless device, and the second access point is capable of associating with one or more wireless devices, the method comprising:

Receiving a probe request broadcast by an associated wireless device, the probe request including a device identification of the wireless device;

receiving and summarizing detection response information reported by a first access point based on the detection request, and generating scanning result information, wherein the detection response information comprises equipment identification of wireless equipment;

Receiving a scanning result request sent by the wireless equipment, and sending the scanning result information to the wireless equipment based on the scanning result request; when the second access point associates a plurality of wireless devices, the second access point classifies the detection response information, reported by the first access point, for the same wireless device into the same data set according to the device identification of the associated wireless device, the data set can use the device identification of the wireless device as the data set identification, and the second access point generates scanning result information corresponding to the wireless device according to the device identification of the wireless device and the detection response information in the corresponding data set.

8. The method of claim 7, wherein the probe response information comprises link state information of the first access point; the sending the scan result information to the wireless device includes:

screening the summarized detection response information according to the link state information of the first access point;

And sending the detection response information obtained by screening to the wireless equipment.

9. The method of claim 7, wherein the probe request carries a custom private protocol.

10. A wireless scanning method, characterized by being applied to a wireless scanning system, the wireless scanning system comprising: the wireless device comprises wireless equipment, a first access point and a second access point, wherein the second access point is associated with the wireless equipment, the second access point is used for managing detection response information reported by the first access point for a detection request broadcasted by the wireless equipment, the detection request comprises equipment identification of the wireless equipment, the detection response information comprises equipment identification of the wireless equipment, and the second access point can be associated with one or more wireless equipment;

The wireless scanning method comprises the following steps:

The second access point receives a detection request broadcast by the wireless device, receives and gathers detection response information reported by the first access point based on the detection request, and generates scanning result information; when the second access point associates a plurality of wireless devices, the second access point classifies the detection response information, reported by the first access point, for the same wireless device into the same data set according to the device identification of the associated wireless device, wherein the data set can be used as the data set identification by using the device identification of the wireless device, and the second access point generates scanning result information corresponding to the wireless device according to the device identification of the wireless device and the detection response information in the corresponding data set;

11. The wireless scanning system is characterized by comprising wireless equipment, a first access point and a second access point, wherein the second access point is associated with the wireless equipment, the second access point is used for managing detection response information reported by the first access point for a detection request broadcasted by the wireless equipment, the detection request comprises equipment identification of the wireless equipment, the detection response information comprises equipment identification of the wireless equipment, and the second access point can be associated with one or more wireless equipment;

the wireless device is used for switching from a first channel to a second channel after broadcasting a detection request by the first channel, wherein the first channel is used for scanning, and the second channel is a current working channel of the wireless device;

The first access point is used for receiving a detection request broadcast by the wireless equipment and determining a second access point associated with the wireless equipment;

the second access point is used for receiving a detection request broadcast by the associated wireless equipment, receiving and summarizing detection response information reported by the first access point based on the detection request, and generating scanning result information; when the second access point associates a plurality of wireless devices, the second access point classifies the detection response information, reported by the first access point, for the same wireless device into the same data set according to the device identification of the associated wireless device, wherein the data set can be used as the data set identification by using the device identification of the wireless device, and the second access point generates scanning result information corresponding to the wireless device according to the device identification of the wireless device and the detection response information in the corresponding data set;

12. A wireless device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the steps of the wireless scanning method of any of claims 1 to 3.

13. A network device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the wireless scanning method according to any of claims 4 to 9 when the computer program is executed.

14. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the wireless scanning method according to any one of claims 1 to 9.