CN117221947A

CN117221947A - WIFI scanning method based on bandwidth frequency band and STA communication device

Info

Publication number: CN117221947A
Application number: CN202311176557.6A
Authority: CN
Inventors: 张雷; 陈俊
Original assignee: Heng Xuan Technology Beijing Co ltd
Current assignee: Heng Xuan Technology Beijing Co ltd
Priority date: 2023-09-12
Filing date: 2023-09-12
Publication date: 2023-12-12

Abstract

The application relates to a WIFI scanning method and an STA communication device based on a bandwidth frequency band. The WIFI scanning method performs the following channel parallel scanning processing for each frequency band. And setting the number of channels scanned in parallel each time according to the representative bandwidth supported by the frequency band and the set bandwidth of each channel. And broadcasting a probe request frame in parallel for a set number of channels in a frequency division multiplexing mode by utilizing the representative bandwidth supported by the frequency band, and obtaining a single parallel scanning result according to the response condition of the set number of channels to the probe request frame. The parallel scanning is performed successively to traverse each channel of the frequency band, and all channel scanning results of the frequency band are obtained based on the respective parallel scanning results.

Description

WIFI scanning method based on bandwidth frequency band and STA communication device

Technical Field

The application relates to the technical field of wireless communication, in particular to a WIFI scanning method and an STA communication device based on a bandwidth frequency band.

Background

With the development of information technology, WIFI is increasingly widely used. However, in the process of connecting WIFI, the STA needs to know the situation of surrounding Accessible Points (APs), and usually, the STA obtains the situation of channels by scanning channels of each frequency band separately. Different frequency bands have corresponding channel ranges, and each channel needs to be scanned in turn. Resulting in a time-consuming accumulation of scanned channels. As the frequency bands supported by WiFi are more and more, such as, but not limited to, 5G frequency bands, 6G frequency bands, etc., channels are more and more, and accordingly, the total time consumption of scanning channels is longer and longer, resulting in excessive cost of time consuming scanning. This affects the user's experience with the device's WiFi communication.

Disclosure of Invention

The present application has been made to solve the above problems occurring in the prior art.

What is needed is a WIFI scanning method and an STA communication apparatus based on bandwidth frequency bands, which are suitable for various frequency band settings of a WIFI apparatus (chip), are simple to 2.4GHz single frequency, to 2.4ghz+5GHz double frequency, complex to 2.4ghz+5ghz+6GHz triple frequency, and the like, and can significantly reduce the scanning total time consumption of all channels for various frequency band settings.

According to a first scheme of the application, a WIFI scanning method based on a bandwidth frequency band is provided. The WIFI scanning method comprises the following channel parallel scanning processing for each frequency band. And setting the number of channels scanned in parallel each time according to the representative bandwidth supported by the frequency band and the bandwidth setting of each channel. And broadcasting a probe request frame in parallel for a set number of channels in a frequency division multiplexing mode by utilizing the representative bandwidth supported by the frequency band, and obtaining a single parallel scanning result according to the response condition of the set number of channels to the probe request frame. The parallel scanning is performed successively to traverse each channel of the frequency band, and all channel scanning results of the frequency band are obtained based on the respective parallel scanning results.

According to a second aspect of the present application, there is provided an STA communication apparatus including a transceiving unit and a processing unit. The processing unit is configured to control the transceiver unit to execute the WIFI scanning method based on the bandwidth frequency band according to the application. The WIFI scanning method comprises the following channel parallel scanning processing for each frequency band. And setting the number of channels scanned in parallel each time according to the representative bandwidth supported by the frequency band and the bandwidth setting of each channel. And broadcasting a probe request frame in parallel for a set number of channels in a frequency division multiplexing mode by utilizing the representative bandwidth supported by the frequency band, and obtaining a single parallel scanning result according to the response condition of the set number of channels to the probe request frame. The parallel scanning is performed successively to traverse each channel of the frequency band, and all channel scanning results of the frequency band are obtained based on the respective parallel scanning results.

The WIFI scanning method and the STA communication device based on the bandwidth frequency bands are applicable to various frequency band settings of WiFi devices (chips), are simple to 2.4GHz single frequency, 2.4GHz+5GHz double frequency, complex to 2.4GHz+5GHz+6GHz three frequency and the like. The number of channels scanned in parallel each time can be set according to the representative bandwidth supported by the frequency band and the bandwidth setting of each channel, so that the supported representative bandwidth is fully utilized, and the scanning of a plurality of channels with set number is completed by one scanning. Each parallel scanning can be conveniently realized by broadcasting the probe request frames in parallel for a set number of various channels in a frequency division multiplexing mode and according to the response condition of the set number of various channels to the probe request frames. And successively executing parallel scanning to traverse each channel of the frequency band, and obtaining all channel scanning results of the frequency band based on each parallel scanning result. For each frequency band, the reduction rate of the total time consumption of all the channels is dependent on the number of channels scanned in a single parallel mode, for example, the number of channels scanned in a single parallel mode is 2, so that the total time consumption of all the channels of the frequency band can be reduced by 50%, and the total time consumption of all the channels is remarkably reduced.

Drawings

In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar components. The accompanying drawings illustrate various embodiments by way of example in general and not by way of limitation, and together with the description and claims serve to explain the disclosed embodiments. Such embodiments are illustrative and not intended to be exhaustive or exclusive of the present apparatus or method.

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

fig. 2 shows a schematic configuration diagram of an STA apparatus having a three-frequency communication specification according to an embodiment of the present application;

fig. 3 shows a schematic diagram of channel distribution of a 2.4G band according to an embodiment of the present application;

fig. 4 shows a schematic diagram of channel distribution of a 5G band according to an embodiment of the present application;

fig. 5 shows a schematic diagram of channel distribution of a 6G frequency band according to an embodiment of the present application;

fig. 6 shows a flowchart of a channel parallel scanning process performed for each frequency band in a WIFI scanning method based on a bandwidth frequency band according to an embodiment of the present application;

fig. 7 is a schematic diagram showing a channel setting method for each parallel scan for frequency bands where bandwidths of the respective channels overlap according to an embodiment of the present application;

fig. 8 is a schematic diagram showing a channel setting method of each parallel scanning for frequency bands where the bandwidths of the channels do not overlap according to an embodiment of the present application;

fig. 9 shows a schematic diagram of a frame of an STA communication apparatus according to an embodiment of the present application.

Detailed Description

The present application will be described in detail below with reference to the drawings and detailed description to enable those skilled in the art to better understand the technical scheme of the present application. Embodiments of the present application will be described in further detail below with reference to the drawings and specific examples, but not by way of limitation. The order in which the steps are described herein by way of example should not be construed as limiting if there is no necessity for a relationship between each other, and it should be understood by those skilled in the art that the steps may be sequentially modified without disrupting the logic of each other so that the overall process is not realized.

The embodiment of the application provides an architecture schematic diagram of a wireless communication system. As shown in fig. 1, the wireless communication system may include one or more APs (e.g., the AP of fig. 1) and one or more STAs (e.g., STA1 and STA2 of fig. 1). Wherein the AP and STA support WLAN communication protocols. The communication protocol may include an earlier IEEE 802.11be (or Wi-Fi 7, eht protocol) earlier than IEEE 802.11ax, or a more advanced IEEE 802.11be based thereon, or the like. With the continuous evolution and development of communication technology, the communication protocol may also include the next generation protocol of IEEE 802.11be, and the like. Any WLAN communication protocol may be employed as long as it is compatible with the flow of the STA of the present application performing a bandwidth and frequency band based WiFi scanning method for surrounding APs. Taking WLAN as an example, the device implementing the method of the present application may be an STA in the WLAN, or a chip or a processing system installed in the STA, for example, but not limited to, a WiFi chip or a WiFi communication system, or a chip or a communication system integrated with a WiFi communication module.

An Access Point (AP) is a device with wireless communication functions, supporting communication using WLAN protocols, and having a function of communicating with other devices in a WLAN network, such as a station or other access points, but may also have a function of communicating with other devices. The device with the wireless communication function can be equipment of a whole machine, a chip or a processing system arranged in the equipment of the whole machine, and the like, and the equipment provided with the chip or the processing system can realize the method and the function of the embodiment of the application under the control of the chip or the processing system. The AP in the embodiment of the present application is a device that provides services for STAs, and can support 802.11ax and more advanced communication protocols. For example, the AP may be a communication entity such as a communication server, router, switch, bridge, etc.; the AP may include macro base stations, micro base stations, relay stations, etc. in various forms, and of course, the AP may also be a chip and a processing system in these various forms of devices, so as to implement the methods and functions of the embodiments of the present application.

A station (e.g., STA1 or STA2 in fig. 1) is a device with wireless communication capabilities that support communication using WLAN protocols and with the ability to communicate with other stations or access points in a WLAN network. For example, the STA is any user communication device that allows a user to communicate with the AP and further communicate with the WLAN, and the device with a wireless communication function may be a complete machine device, or may also be a chip or a processing system installed in the complete machine device, where the device on which the chip or the processing system is installed may implement the methods and functions of the embodiments of the present application under the control of the chip or the processing system. For example, the STA may be a user device such as various computers, mobile phones, intelligent wearable devices, etc. capable of being networked, or an internet of things node in the internet of things, or a vehicle-mounted communication device in the internet of vehicles, or entertainment equipment, game equipment or system, global positioning system equipment, etc., and may also be a chip and a processing system in the above terminals.

For the communication specification of the STA device, it may have a single band, a dual band, or a tri band, etc. In some embodiments, the STA (communication) device may include a WiFi chip, where the WiFi chip includes any of the following combinations of frequency band WiFi modules: a separate 2.4G frequency band WiFi module, a separate 5G frequency band WiFi module and a separate 6G frequency band WiFi module; a combination of a 2.4G frequency band WiFi module and a 5G frequency band WiFi module, a combination of a 5G frequency band WiFi module and a 6G frequency band WiFi module, and a combination of a 2.4G frequency band WiFi module and a 6G frequency band WiFi module; and a combination of a 2.4G band WiFi module, a 5G band WiFi module, and a 6G band WiFi module.

Fig. 2 shows a schematic configuration diagram of an STA apparatus having a three-frequency communication specification according to an embodiment of the present application. As shown in fig. 2, the WiFi module of each frequency band may have multiple antennas or a single antenna, and may include a physical layer (PHY) processing circuit, a Medium Access Control (MAC) processing circuit, and a radio frequency front end. The physical layer processing circuitry may be operable to process physical layer signals in compliance with the relevant specifications of the communication protocol and the MAC layer processing circuitry may be operable to process MAC layer signals in compliance with the relevant specifications of the communication protocol. The rf front-end may be integrated into a chip, and may include a WiFi FEM, which is a series of rf front-end circuits in Wi-Fi communication, such as a rf module chip with integrated Power Amplifier (PA), filter, rf switch, and Low Noise Amplifier (LNA), as an example of the rf front-end. In some embodiments, the radio frequency front end may blend the critical components required between the baseband chip and the various antennas.

Although not shown, the AP may also have a single-band WiFi module, or a WiFi module with multiple bands, where each WiFi module with multiple antennas or a single antenna may include its own PHY processing circuit, MAC processing circuit, and radio frequency front end, and the technical meaning of this may be referred to in the description about the physical layer processing circuit, MAC layer processing circuit, and radio frequency front end in the STA, which is not repeated herein.

The channel distribution of the 2.4G band, the 5G band, and the 6G band according to the embodiment of the present application will be specifically described with reference to fig. 3, 4, and 5, respectively.

As shown in fig. 3, the 2.4G band is divided into 14 overlapping staggered channels, from 2.412GHz to 2.484GHz, each with an effective frequency width of 20MHz, and a forced isolation band of 2 MHz. The channel codes range from 1 to 14, and there is a certain overlap range between adjacent channels. Channel 1 overlaps with all of channels 2, 3 and 4, and there is no overlap region with channel 1 at least until channel 5. Further, there is no overlap region with channel 2 until channel 6, no overlap region with channel 3 until channel 7, no overlap region with channel 4 until channel 8, and no overlap region with channel 9 until channel 13. From channel 1 to channel 13, the adjacent channels all have a frequency offset of 5MHz, whereas channel 14 no longer follows a frequency offset of an integer multiple of 5 MHz. The 2.4G band may support a 20M bandwidth, and a maximum of 40M bandwidth as its representative bandwidth.

As shown in fig. 4, the 5G band has more abundant resources than the 2.4G band, and has more 20MHz channels. In the 5G band, adjacent 20M channels are non-overlapping, such as channel 36 and channel 40. The 5G band has a total of 60 channels, from 5160MHz to 5865MHz (part not shown). As shown in fig. 4, from 5170MHz to 5835MHz, channels having 20MHz in the 5G band include channels 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144, 149, 153, 157, 161, 165, and so on. The 5G frequency band can support the representative bandwidths of 20MHz, 40MHz, 80MHz and the like; if an operation mode of 80mhz+80mhz is supported, the representative bandwidth can be increased to 160MHz, even to 320MHz. The channel bonding of 80mhz+80mhz may be continuous or discontinuous.

As shown in fig. 5, the 6GHz band is a globally uniform contiguous block of spectrum ranging from 5925MHz to 7125MHz, totaling 1200MHz spectrum (approximately 1.2GHz total bandwidth), meaning that 3 additional 320M channels, or 7 160MHz channels, or 14 80MHz channels, or 29 40MHz channels, or 59 20MHz channels are provided. Compared with 2.4GHz and 5GHz, the frequency spectrum resources of the 6GHz frequency band are more than the sum of the two frequency spectrum resources. The 20MHz channels of 6G include channel 1-channel 233, which is also non-overlapping between adjacent channels. The 6G band may support representative bandwidths of 20MHz, 40MHz, 80MHz, 160MHz, 320MHz, etc. Generally, the 6G frequency band can stably operate at the maximum 160MHz bandwidth, and can also stably operate at lower 80MHz, 60MHz, 40MHz and 20MHz bandwidths.

In some embodiments, the present application provides a WIFI scanning method based on a bandwidth frequency band, where the WIFI scanning method performs a parallel channel scanning process for each different frequency band. For example, if the STA device has a three-frequency communication specification, that is, has a 2.4G band WiFi module, a 5G band WiFi module, and a 6G band WiFi module, in the process of scanning the 2.4G band, the 5G band and the 6G band are scanned in parallel, and the respective scanning processes of the respective bands are independent from each other and may be started at near the same time. Thus, the total scan time required is no longer a superposition of the respective scan times of the individual frequency bands, but the maximum of the respective scan times of the individual frequency bands. In some embodiments, scanning of one channel typically takes 110ms. For example, if the scan time of the 2.4G band is t1, the scan time of the 5G band is t2, and the scan time of the 6G band is t3, if t3> t1 and t3> t2 then the total time consumption of the parallel scan process t3 is reduced by a ratio of 1-t 3/(t1+t2+t3) compared to the total time consumption of the serial scan t1+t2+t3, this can significantly improve the user experience of using the WiFi communication of the device, especially when scanning for connecting WiFi. The application further performs parallel scanning processing between each channel of each frequency band in addition to contributions from parallel scanning processes of different frequency bands to each other for a reduction rate of total time consumption of multi-frequency band scanning.

In some embodiments, the STA device may also have a single frequency communication specification, and for a single frequency band STA device, the STA device does not benefit from a reduction rate of total scanning time by parallel scanning procedures between different frequency bands, but still benefits from parallel scanning processing between channels of each frequency band.

As shown in fig. 3, the parallel scanning process between the channels of the respective frequency bands includes the following steps.

In step 601, the number of channels scanned in parallel each time is set according to the representative bandwidth supported by the frequency band and the bandwidth setting of each channel. The "bandwidth setting of each channel" herein is not limited to the bandwidth value of each channel, but may cover respective bandwidth distributions of several channels scanned in parallel at a time, including the bandwidth value and frequency distribution position thereof, and frequency distribution position relationship between bandwidths of each other, and the like. For example, how many channels are set per parallel scan, and the representative bandwidth of the band support may be the maximum bandwidth of the band support, or may be an appropriate bandwidth of the band support and capable of continuous and stable communication, taking into account the representative bandwidth of the band support. For example, for the 6GHz band, the maximum bandwidth that it is possible to support is 320M, but the maximum bandwidth of 160MHz can be stably operated, and for reasons of stability, how many channels are scanned in parallel each time can be set in consideration of the bandwidth of 160MHz and the bandwidth setting of the channels. In some embodiments, the amount of channels per parallel scan may be set as desired as the channel bandwidth of the consideration reference. For example, the set bandwidth of each channel may be made lower, such as but not limited to 80M, 60M, 40M, 20M, etc., especially 20M, so that it is forward compatible with the case where the representative bandwidth is lower. Even though the representative bandwidth supported by the frequency band is only 20M, the parallel scanning process is compatible with the parallel scanning process although the parallel scanning process does not exist in the strict sense. Furthermore, lower bandwidth channels are also more common in everyday life, and the number of channels in lower frequency bands is also greater for the 5G frequency band and the 6G frequency band. Thus, the number of channels per parallel scan can be reasonably increased, and parallel scan can be aimed at using more frequently and more channels.

In step 602, the probe request frames are broadcast in parallel for a set number of channels in a frequency division multiplexing manner by using the representative bandwidth supported by the frequency band, and a single parallel scanning result is obtained according to the response condition of the set number of channels to the probe request frames. The parallel scanning mode of the response of the broadcast request frame-detection channel to the probe request frame not only adopts frequency division multiplexing, but also can be compatible with the broadcast-response mode of STA-AP, and the parallel scanning and the feedback of the parallel scanning result are skillfully realized with low improvement cost.

In step 603, parallel scanning is performed successively to traverse each channel of the frequency band, and all channel scanning results of the frequency band are obtained based on the respective parallel scanning results. It should be appreciated that the representative bandwidth supported by a frequency band and the number of channels per parallel scan allowed by the bandwidth setting of the respective channel need not (but typically does not) be exhaustive for each channel of the frequency band. Accordingly, it may be performed a plurality of times to traverse each channel of the frequency band. In some embodiments, the channel settings for each parallel scan may be different, as will be described below in connection with the 2.4G band.

Thus, for each frequency band, the number of channels scanned in parallel each time can be set according to the representative bandwidth supported by the frequency band and the bandwidth setting of each channel, so that the supported representative bandwidth is fully utilized, and the scanning of a plurality of channels with set number is completed by one scanning. Each parallel scanning can be conveniently realized by broadcasting the probe request frames in parallel for a set number of various channels in a frequency division multiplexing mode and according to the response condition of the set number of various channels to the probe request frames. And successively executing parallel scanning to traverse each channel of the frequency band, and obtaining all channel scanning results of the frequency band based on each parallel scanning result. For each frequency band, the reduction rate of the total time consumption of all the channels is dependent on the number of channels scanned in a single parallel mode, for example, the number of channels scanned in a single parallel mode is 2, so that the total time consumption of all the channels of the frequency band can be reduced by 50%, and the total time consumption of all the channels is remarkably reduced.

In some embodiments, the frequency bands include at least a first frequency band supporting a first representative bandwidth and a second frequency band supporting a second representative bandwidth, the second frequency band being higher in frequency than the first frequency band and the second representative bandwidth being wider than the first representative bandwidth. In this way, the total time consumed for multi-band scanning can be further reduced by the contribution of parallel scanning processes between different bands. For example, the first frequency band and the second frequency band include any one of the following combinations: 2.4G frequency band and 5G frequency band; 2.4G band, 5G band and 6G band; 5G frequency band and 6G frequency band.

The number of channels scanned in parallel at a time may be set in various ways according to the representative bandwidth supported by the frequency band and the bandwidth setting of each channel. In some embodiments, it may be important to set which channels are scanned in parallel each time taking into account overlapping frequency ranges between channels. As shown in fig. 7, the following steps are performed for the frequency bands where the respective channel bandwidths overlap.

In step 701, the channels of each parallel scan are set such that the overlapping frequency range between the channels is less than a first threshold. In this way, redundant scanning of the channel portion overlapping the frequency range can be alleviated, thereby improving the scanning speed. Returning to fig. 3, for example, the 2.4G band may support an operating bandwidth of 40M, then only 2 channels may be scanned at a time, calculated as 20M per channel bandwidth scanned. As shown in fig. 3, there are channels 1 to 14, and among channels 1 to 13, the frequency interval of adjacent channels is 5M, and the frequency deviation of channel 14 from any channel is not an integer multiple of 5M. Following step 701, channels 1 and 5 may then be scanned together, channels 2 and 6 together, channels 3 and 7 together, channels 4 and 8 together, and channels 9 and 13 together, such that the overlapping frequency range between the two channels per scan is less than, for example, 0.05M, substantially close to zero.

In step 702, for a remaining channel, if its overlapping frequency range with any other remaining channel is greater than a first threshold, or its combined frequency range with any other remaining channel is greater than a representative bandwidth supported by the frequency band, the remaining channel is set as an independently scanned channel. Referring to fig. 3, channels 10, 11, 12 each cannot find a channel with an overlapping frequency range less than a first threshold; for channel 14, the overlapping frequency range of channel 12 and channel 14 is greater than the first threshold, the combined frequency range of channel 10 and channel 14 is greater than 40M, and the combined frequency range of channel 11 and channel 14 is also greater than 40M, so that channel 14 can be scanned separately. Therefore, one full scan of the 2.4G band requires 9 scans, and the channel groups for each scan are channels 1-5, channels 2-6, channels 3-7, channels 4-8, channels 9-13, channel 10, channel 11, channel 12, channel 14, respectively. In this way, in addition to alleviating redundant scanning of the channel portions of the overlapping frequency range, situations can be avoided where the representative bandwidth cannot successfully support a certain scan.

In some embodiments, as shown in fig. 8, according to the representative bandwidth supported by the frequency band and the bandwidth setting of each channel, setting the number of channels scanned in parallel at each time may specifically further include: frequency bands where the bandwidths do not overlap for the respective channels: the channels of each parallel scan are set such that the difference between the aggregate bandwidth of the set channels and the representative bandwidth supported by the frequency band is less than a second threshold (step 801). Therefore, the representative bandwidth supported by the frequency band can be fully utilized as much as possible, so that the efficiency of parallel scanning each time is improved, and the total time consumption of parallel scanning is reduced.

Fig. 9 shows a schematic diagram of a frame of an STA communication apparatus 900 according to an embodiment of the present application.

The STA communication apparatus 900 includes a processing unit 901 and a transceiver unit 902 in communication with the processing unit 901. The processing unit 901 is a general-purpose processor, a special-purpose processor, or the like. For example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminals, terminal chips, DUs or CUs, etc.), execute computer programs, and process data of the computer programs. The transceiver unit 902 may be referred to as a transceiver, a transceiver circuit, or the like, for implementing a transceiver function. The transceiver unit 902 may include a receiver and a transmitter, where the receiver may be called a receiver or a receiving circuit, etc. for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function. Optionally, the STA communication apparatus 900 may also include an antenna and/or a radio frequency unit (not shown). The antenna and/or radio unit may be located within the STA communication apparatus 900 or may be separate from the STA communication apparatus 900, i.e., the antenna and/or radio unit may be remotely located or distributed.

The processing unit 901 may be configured to control the transceiver unit 902 to perform the WIFI scanning method based on the bandwidth frequency band according to various embodiments of the present application. The WIFI scanning method comprises the following channel parallel scanning processing is executed for each frequency band. And setting the number of channels scanned in parallel each time according to the representative bandwidth supported by the frequency band and the set bandwidth of each channel. Utilizing the representative bandwidth supported by the frequency band, broadcasting a probe request frame in parallel aiming at a set number of channels in a frequency division multiplexing mode, and obtaining a single parallel scanning result according to the response condition of the set number of channels to the probe request frame; and successively performing parallel scanning to traverse each channel of the frequency band, and obtaining all channel scanning results of the frequency band based on each parallel scanning result.

In some embodiments, the STA communication apparatus 900 includes a WiFi chip, and the WiFi chip includes any of the following combinations of WiFi modules: a 2.4G frequency band WiFi module alone; a separate 5G frequency band WiFi module; a separate 6G frequency band WiFi module; 2.4G frequency band WiFi module and 5G frequency band WiFi module; 2.4G frequency band WiFi module, 5G frequency band WiFi module and 6G frequency band WiFi module; 5G frequency band WiFi module and 6G frequency band WiFi module. For example, the set bandwidth of each channel is 20M to forward-compatible with the lower representative bandwidth of the frequency band.

In some embodiments, the processing unit 901 is further configured to: in parallel, the parallel scanning processing for the channels of different frequency bands is performed.

The respective scanning processes for the respective frequency bands are independent of each other and may be initiated at approximately the same time. Thus, the total scan time required is no longer a superposition of the respective scan times of the individual frequency bands, but the maximum of the respective scan times of the individual frequency bands. For example, if the scan time of the 2.4G band is t1, the scan time of the 5G band is t2, the scan time of the 6G band is t3, t3> t1 and t3> t2, then the reduction ratio of the total time consumption t3 of the parallel scan process is 1-t 3/(t1+t2+t3) compared to the total time consumption t1+t2+t3 of the serial scan, which can significantly improve the experience of the user using the WiFi communication of the device, especially when scanning for connecting WiFi.

The WIFI scanning process, examples and details of the WIFI scanning process described in the various embodiments of the present application may be combined independently or in combination with each other, and are not described herein.

The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more aspects thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the above detailed description, various features may be grouped together to streamline the application. This is not to be interpreted as an intention that the disclosed features not being claimed are essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with one another in various combinations or permutations. The scope of the application should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

Claims

1. The WIFI scanning method based on the bandwidth frequency bands is characterized by comprising the following channel parallel scanning processing is performed on each frequency band:

setting the number of channels scanned in parallel each time according to the representative bandwidth supported by the frequency band and the bandwidth setting of each channel;

utilizing the representative bandwidth supported by the frequency band, broadcasting a probe request frame in parallel aiming at a set number of channels in a frequency division multiplexing mode, and obtaining a single parallel scanning result according to the response condition of the set number of channels to the probe request frame; and

the parallel scanning is performed successively to traverse each channel of the frequency band, and all channel scanning results of the frequency band are obtained based on the respective parallel scanning results.

2. The WIFI scanning method according to claim 1, wherein the frequency bands include at least a first frequency band supporting a first representative bandwidth and a second frequency band supporting a second representative bandwidth, the second frequency band having a frequency higher than the first frequency band and the second representative bandwidth being wider than the first generation watchband, the first frequency band and the second frequency band including any combination of:

2.4G frequency band and 5G frequency band;

2.4G band, 5G band and 6G band;

5G frequency band and 6G frequency band;

wherein, the set bandwidth of the channel is 20M.

3. The WIFI scanning method according to claim 2, wherein the parallel scanning processes for channels of different frequency bands are performed in parallel with each other.

4. The WIFI scanning method according to claim 1, wherein the frequency band is a single frequency band of 2.4G frequency band, 5G frequency band and 6G frequency band.

5. The WIFI scanning method according to claim 1, wherein the representative bandwidth supported by the frequency band includes a maximum bandwidth supported by the frequency band.

6. The WIFI scanning method according to claim 1, wherein setting the number of channels scanned in parallel each time according to the representative bandwidth supported by the frequency band and the bandwidth setting of each channel specifically includes, for each frequency band where the bandwidths of the channels overlap:

setting channels scanned in parallel for each time so that the overlapping frequency range between the channels is smaller than a first threshold value;

for the remaining channels, if the overlapping frequency range of the remaining channels and any other remaining channels is larger than the first threshold value, or the combined frequency range of the remaining channels and any other remaining channels is larger than the representative bandwidth supported by the frequency band, setting the remaining channels as independently scanned channels.

7. The WIFI scanning method according to claim 1, wherein setting the number of channels scanned in parallel each time according to the representative bandwidth supported by the frequency band and the bandwidth setting of each channel specifically includes, for each frequency band where the bandwidths of the channels do not overlap:

the channels of each parallel scan are set such that the difference between the aggregate bandwidth of the set channels and the representative bandwidth supported by the frequency band is less than a second threshold.

8. An STA communication apparatus, characterized in that it comprises a transceiver unit and a processing unit, and the processing unit is configured to control the transceiver unit to perform the WIFI scanning method based on bandwidth frequency bands according to any one of claims 1-7.

9. The STA communication apparatus of claim 8, wherein the STA communication apparatus includes a WiFi chip, and the WiFi chip includes any of the following combinations of WiFi modules:

a 2.4G frequency band WiFi module alone;

a separate 5G frequency band WiFi module;

a separate 6G frequency band WiFi module;

2.4G frequency band WiFi module and 5G frequency band WiFi module;

2.4G frequency band WiFi module, 5G frequency band WiFi module and 6G frequency band WiFi module;

a 5G frequency band WiFi module and a 6G frequency band WiFi module;

wherein, the set bandwidth of each channel is 20M.

10. The STA communication apparatus of claim 9, wherein the processing unit is further configured to: in parallel, the parallel scanning processing for the channels of different frequency bands is performed.