CN115243332A - Channel bandwidth switching method, device, equipment and storage medium - Google Patents

Channel bandwidth switching method, device, equipment and storage medium Download PDF

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Publication number
CN115243332A
CN115243332A CN202110437035.1A CN202110437035A CN115243332A CN 115243332 A CN115243332 A CN 115243332A CN 202110437035 A CN202110437035 A CN 202110437035A CN 115243332 A CN115243332 A CN 115243332A
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channel bandwidth
access point
calibration data
point device
switching
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Chinese (zh)
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许超杰
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The application discloses a channel bandwidth switching method, a device, equipment and a storage medium, and relates to the technical field of communication. The method is performed by an access point device of a wireless local area network, the method comprising: communicating with a site device in a wireless local area network with a first channel bandwidth; in response to switching from the first channel bandwidth to the second channel bandwidth, acquiring access point radio frequency calibration data corresponding to the second channel bandwidth from a prestored access point calibration data set; and switching to the second channel bandwidth to communicate with the station equipment in the wireless local area network based on the access point radio frequency calibration data corresponding to the second channel bandwidth. The application provides a channel bandwidth switching mode for access point equipment, wherein a first channel bandwidth is switched to a second channel bandwidth, and energy consumption of the access point equipment in unnecessary time periods is reduced. And acquiring the configuration parameters required by the second channel bandwidth in advance, and ensuring the timeliness of channel bandwidth switching.

Description

Channel bandwidth switching method, device, equipment and storage medium
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for switching channel bandwidths.
Background
With the continuous evolution of Wi-Fi (Wireless Fidelity, wireless communication) technology, wi-Fi APs (Access points) are developing towards more antennas and higher bandwidths. But the receiver circuitry of the AP needs to be active all the time and thus power consumption is becoming higher and higher.
Disclosure of Invention
The embodiment of the application provides a channel bandwidth switching method, a channel bandwidth switching device, channel bandwidth switching equipment and a storage medium. The technical scheme is as follows:
according to an aspect of the embodiments of the present application, there is provided a channel bandwidth switching method, the method being performed by an access point device of a wireless local area network, the method including:
communicating with a site device within the wireless local area network at a first channel bandwidth;
responding to the switching from the first channel bandwidth to a second channel bandwidth, and acquiring access point radio frequency calibration data corresponding to the second channel bandwidth from a prestored access point calibration data set; the access point calibration data set comprises access point radio frequency calibration data respectively corresponding to a plurality of different candidate channel bandwidths, and the second channel bandwidth is smaller than the first channel bandwidth;
and switching to the second channel bandwidth to communicate with the station equipment in the wireless local area network based on the access point radio frequency calibration data corresponding to the second channel bandwidth.
According to an aspect of the embodiments of the present application, there is provided a channel bandwidth switching method, where the method is performed by a station device of a wireless local area network, and the method includes:
receiving first indication information sent by an access point device of the wireless local area network, wherein the first indication information is used for indicating the access point device to switch from a first channel bandwidth to a second channel bandwidth, and the second channel bandwidth is smaller than the first channel bandwidth; the access point device is configured to acquire access point radio frequency calibration data corresponding to the second channel bandwidth from a pre-stored access point calibration data set, and switch to the second channel bandwidth to communicate with a station device in the wireless local area network based on the access point radio frequency calibration data corresponding to the second channel bandwidth;
communicate with the access point device based on the second channel bandwidth.
According to an aspect of an embodiment of the present application, there is provided a channel bandwidth switching apparatus, including:
the device operation module is used for communicating with the site device in the wireless local area network by using a first channel bandwidth;
the data acquisition module is used for responding to switching from the first channel bandwidth to a second channel bandwidth, and acquiring access point radio frequency calibration data corresponding to the second channel bandwidth from a prestored access point calibration data set; the access point calibration data set comprises access point radio frequency calibration data corresponding to various different candidate channel bandwidths respectively, and the second channel bandwidth is smaller than the first channel bandwidth;
and the bandwidth switching module is used for switching to the second channel bandwidth to communicate with the station equipment in the wireless local area network based on the access point radio frequency calibration data corresponding to the second channel bandwidth.
According to an aspect of an embodiment of the present application, there is provided a channel bandwidth switching apparatus, including:
an indication receiving module, configured to receive first indication information sent by an access point device of a wireless local area network, where the first indication information is used to indicate that the access point device switches from a first channel bandwidth to a second channel bandwidth, and the second channel bandwidth is smaller than the first channel bandwidth; the access point device is configured to acquire access point radio frequency calibration data corresponding to the second channel bandwidth from a pre-stored access point calibration data set, and switch to the second channel bandwidth to communicate with a station device in the wireless local area network based on the access point radio frequency calibration data corresponding to the second channel bandwidth;
a device operating module to communicate with the access point device based on the second channel bandwidth.
According to an aspect of the embodiments of the present application, there is provided an access point device, the access point device including a processor and a memory, where the memory stores a computer program, and the computer program is executed by the processor to implement the above channel bandwidth switching method on the access point device side.
According to an aspect of the embodiments of the present application, there is provided a station apparatus, which includes a processor and a memory, where the memory stores a computer program, and the computer program is executed by the processor to implement the above channel bandwidth switching method on the station apparatus side.
According to an aspect of the embodiments of the present application, there is provided a computer-readable storage medium having a computer program stored therein, where the computer program is executed by a processor to implement the above-mentioned channel bandwidth switching method on the access point device side or implement the above-mentioned channel bandwidth switching method on the station device side.
According to an aspect of embodiments herein, there is provided a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the device reads the computer instruction from the computer-readable storage medium, and executes the computer instruction, so that the device performs the channel bandwidth switching method of the access point device side or performs the channel bandwidth method of the station device side.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
by switching the access point device from the first channel bandwidth to the second channel bandwidth, and the second channel bandwidth is smaller than the first channel bandwidth, that is, the application provides a channel bandwidth switching manner for the access point device, and the access point device is switched from the first channel bandwidth to the second channel bandwidth, so that the access point device can be switched from the high energy consumption mode to the low energy consumption mode, and energy consumption of the access point device in an unnecessary period is reduced. And when switching the channel bandwidth, directly acquiring the access point radio frequency calibration data corresponding to the second channel bandwidth from the pre-stored access point calibration data set for switching, namely acquiring the configuration parameters required by the second channel bandwidth in advance, and ensuring the timeliness of switching the channel bandwidth.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a wireless local area network system provided by one embodiment of the present application;
fig. 2 is a flowchart of a channel bandwidth switching method according to an embodiment of the present application;
fig. 3 illustrates an access point calibration data set acquisition approach;
fig. 4 illustrates an exemplary determination of a neutral frequency point;
fig. 5 is a diagram illustrating a channel bandwidth switching manner of an access point device;
fig. 6 is a flowchart of a channel bandwidth switching method according to another embodiment of the present application;
fig. 7 is a flowchart of a channel bandwidth switching method according to another embodiment of the present application;
fig. 8 is a flowchart of a channel bandwidth switching method according to another embodiment of the present application;
fig. 9 is a diagram illustrating interaction of an access point device and a station device;
fig. 10 is a block diagram of a channel bandwidth switching apparatus according to an embodiment of the present application;
fig. 11 is a block diagram of a channel bandwidth switching apparatus according to another embodiment of the present application;
fig. 12 is a block diagram of a device for switching channel bandwidth according to another embodiment of the present application;
fig. 13 is a block diagram of a device for switching channel bandwidth according to another embodiment of the present application;
fig. 14 is a block diagram of an access point device/station device according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, a schematic diagram of a wireless lan system according to an embodiment of the present application is shown. The wireless local area network system may include an access point device 10 and a station device 20.
The access point device 10 is a wireless access point (AP for short) and is configured to provide a wireless access service for the station device 20. Alternatively, the access point device 10 is an electronic device such as a router, a repeater, or the like.
The station device 20 may be an electronic device such as a mobile phone, a tablet Computer, a game console, an electronic book reader, a multimedia playing device, a wearable device, a smart home device, a PC (Personal Computer), and the like. Optionally, after accessing the wireless local area network through the access point device 10, the station device 20 may perform data transmission with other devices through the wireless network, where the other devices may be devices served by the wireless local area network corresponding to the access point device 10, and may also be other devices outside the wireless local area network, which is not limited in this embodiment of the present application.
Optionally, the access point device 10 provides a wireless access service to the plurality of station devices 20. In one possible embodiment, the coverage area of the access point device 10 is a circular area that spreads outward with the access point device 10 as the center, and the access point device 10 can provide wireless access service for a plurality of station devices within the coverage area. Of course, in another possible embodiment, the user may also limit the station devices 20 served by the access point device 10 according to practical situations, such as limiting the number of the station devices 20, limiting the types of the station devices 20, and so on.
In the related art, some power saving schemes for station devices (terminal devices such as handsets) are provided, but effective power saving schemes are not provided for access point devices.
Although the maximum throughput of access point devices has been developed to a high level, the network load may vary greatly during the various time periods of the day, even with the access point device traffic at a very low level for a significant portion of the time. Such as no one at home during the day, only some simple signaling is exchanged between the access point device and the station devices it serves to maintain the connection. These signaling signals are usually transmitted and received only by 20M PPDU (physical layer Data Unit), and signals such as beacon signals and PS-POLL (Power Save POLL) signals are transmitted and received by DSSS-1 (Direct Sequence Spread Spectrum) and OFDM-6 (Orthogonal Frequency Division Multiplexing). However, since there is a possibility that the station device transmits PPDUs of multiple spatial streams 80M or 160M to the access point device at any time, the access point device has to stand by in a maximum bandwidth state, that is, the access point device is in a maximum energy consumption state for a long time.
If the access point device can only transmit and receive 20M PPDUs when the throughput is low, the dynamic power consumption of the access point device can be significantly reduced, and the principle is as follows:
according to a calculation formula of the dynamic power consumption of the switching circuit:
Figure BDA0003033550820000031
wherein, C L Is referred to as load capacitance, V is the operating voltage, and TR is the switching rate.
If the access point device only needs to transceive 20M PPDU, then TR in the formula may be synchronously lowered to 1/4 (for 80M PPDU) or 1/8 (for 160M PPDU) according to Nyquist sampling theorem, and then this portion of dynamic power consumption of the access point device may be synchronously lowered to 1/4 or 1/8.
The application provides a power saving scheme for an access point device, the access point device is switched from a first channel bandwidth to a second channel bandwidth, the second channel bandwidth is smaller than the first channel bandwidth, and the energy consumption of the access point device is reduced through the switching of the channel bandwidths, so that the access point device can be switched from a high energy consumption mode to a low energy consumption mode, and the energy consumption of the access point device in an unnecessary time period is reduced.
The technical solution of the present application will be described in detail by several embodiments.
Referring to fig. 2, a flowchart of a channel bandwidth switching method according to an embodiment of the present application is shown. The method is applicable to the wireless local area network system shown in fig. 1, and as the execution subject of each step may be the access point device 10, the method may include the following steps (201 to 204):
step 201, communicating with a station device in a wireless local area network with a first channel bandwidth.
The channel bandwidth is used to indicate the amount of data that can be transmitted by the access point device per unit time. Optionally, the channel bandwidth is proportional to the data transmission efficiency, that is, the larger the channel bandwidth is, the greater the data transmission efficiency is, and the smaller the channel bandwidth is, the smaller the data transmission efficiency is.
In the embodiment of the present application, when the access point device is in an operating state, the access point device communicates with a station device in a wireless local area network with a first channel bandwidth. Optionally, the access point device corresponds to multiple channel bandwidths, that is, the access point device may adjust its data transmission efficiency by adjusting the channel bandwidth according to an actual situation. The first channel bandwidth is any channel bandwidth corresponding to the access point device, and this is not limited in this embodiment of the application.
Step 202, in response to switching from the first channel bandwidth to the second channel bandwidth, access point radio frequency calibration data corresponding to the second channel bandwidth is obtained from a pre-stored access point calibration data set.
The second channel bandwidth is a channel bandwidth corresponding to the access point device except for the first channel bandwidth. Optionally, in this embodiment of the present application, the second channel bandwidth is smaller than the first channel bandwidth, that is, the data transmission efficiency of the access point device under the second channel bandwidth is smaller than the data transmission efficiency of the access point device under the first channel bandwidth.
In this embodiment, when the access point device communicates with the station device in the wireless local area network with the first channel bandwidth, if the access point device switches from the first channel bandwidth to the second channel bandwidth, the access point device obtains, from a pre-stored access point calibration data set, access single radio frequency calibration data corresponding to the second channel bandwidth. The access point calibration data set comprises access point radio frequency calibration data corresponding to a plurality of different candidate channel bandwidths respectively, and the access point radio frequency calibration data refers to configuration data aiming at the channel bandwidths. Optionally, the access point radio frequency calibration data includes, but is not limited to, at least one of: receiver dc, receiver image rejection, transmitter carrier leakage, transmitter PA Digital Predistortion (DPD) calibration, etc. Optionally, in the adjustment process for the radio frequency circuit, after the radio frequency circuit is set to the corresponding frequency point, the pre-calibrated related parameter is obtained from the access point radio frequency calibration data, and the pre-calibrated related parameter is configured in the circuit, so that the corresponding performance of the access point device under the second channel bandwidth can be optimized.
Optionally, in this embodiment, when the access point device communicates with the first channel bandwidth, the access point device may monitor a network status (e.g., total throughput), and switch the channel bandwidth used according to the network status. After the access point device acquires the network state, when the access point device is determined to be capable of switching to a state with low data transmission efficiency requirement according to the network state, the access point device determines to switch the channel bandwidth of the access point device from the first channel bandwidth to the second channel bandwidth.
It should be noted that, in the embodiment of the present application, the capability (e.g., data transmission efficiency) of the access point device at the first channel bandwidth is higher than the capability of the access point device at the second channel bandwidth, and the access point device switches from the first channel bandwidth to the second channel bandwidth.
In one possible embodiment, the access point device has two corresponding channel bandwidths, i.e. the first channel bandwidth and the second channel bandwidth. When the access point device communicates with each device in the first channel bandwidth, if the access point device determines to perform switching of the channel bandwidth, the access point device directly determines to switch from the first channel bandwidth to the second channel bandwidth.
In another possible embodiment, the access point device has three or more channel bandwidths. When the access point device communicates with each device with the first channel bandwidth, if it is determined to perform channel bandwidth switching, the access point device may select an appropriate channel bandwidth as the second channel bandwidth in combination with an actual situation (such as a network state), and then the access point device determines to switch from the first channel bandwidth to the second channel bandwidth. Illustratively, the access point device includes a first channel bandwidth, a second channel bandwidth, and a third channel bandwidth, where the first channel bandwidth is 160M, the second channel bandwidth is 80M, and the third channel bandwidth is 20M, and in a case where the access point device communicates with each device with the first channel bandwidth, if it is determined that the 80M channel bandwidth can meet the requirement based on the network status, it is determined that the first channel bandwidth is switched to the second channel bandwidth, and if it is determined that the 20M channel bandwidth can meet the requirement based on the network status, it is determined that the first channel bandwidth is switched to the third channel bandwidth.
Optionally, in this embodiment of the application, after determining to switch from the first channel bandwidth to the second channel bandwidth, the access point device obtains an access point calibration data set corresponding to the access point device, and obtains access point radio frequency calibration data corresponding to the second channel bandwidth from the access point calibration data. The access point device configures each parameter in the access point device based on the access point target radio frequency calibration data after acquiring the access point target radio frequency calibration data, so that the access point device communicates with each site with the target channel bandwidth. The parameter may be a parameter for a hardware unit or a parameter for a software unit, which is not limited in the embodiment of the present application.
Optionally, the channel bandwidth (the first channel bandwidth and the second channel bandwidth) corresponding to the access point device may indicate a channel bandwidth with a fixed value, or may indicate a channel bandwidth within a certain range.
In a possible embodiment, the channel bandwidths indicated by the first channel bandwidth and the second channel bandwidth are not adjustable, that is, the first channel bandwidth and the second channel bandwidth indicate channel bandwidths with fixed values. For example, the first channel bandwidth is 160M, and the second channel bandwidth is 20M. In this case, after the access point device switches from the first channel bandwidth to the second channel bandwidth, the access point device can only communicate at the fixed channel bandwidth indicated by the second channel bandwidth. Also, in this case, there is a set of access point calibration data sets for each channel bandwidth. Optionally, when the access point device performs switching for the second channel bandwidth, based on the second channel bandwidth, access point radio frequency calibration data corresponding to the second channel bandwidth is obtained in the access point calibration data set, and further, the access point device configures each parameter in the access point device with the access point radio frequency data as a reference, so that the access point device can communicate with each station device with the second channel bandwidth.
In another possible embodiment, the channel bandwidths indicated by the first channel bandwidth and the second channel bandwidth are adjustable, that is, the first channel bandwidth and the second channel bandwidth indicate channel bandwidths within a certain range. For example, the adjustment range of the first channel bandwidth is 160M to 120M, and the adjustment range of the second channel bandwidth is 80M to 20M. In this case, after the access point device switches from the first channel bandwidth to the second channel bandwidth, the access point device flexibly adjusts the actually adopted channel bandwidth according to the actual situation within the range of the channel bandwidth indicated by the second channel bandwidth. In this case, each channel bandwidth corresponds to multiple sets of access point radio frequency calibration data, and each set of access point radio frequency calibration data corresponds to a certain channel bandwidth within a channel bandwidth range indicated by the channel bandwidth; or, each channel bandwidth corresponds to a set of access point radio frequency calibration data, and the access point radio frequency calibration data includes a configuration range of each parameter. In a possible implementation manner, when the access point device performs switching for the second channel bandwidth, multiple sets of access point radio frequency calibration data corresponding to the second channel bandwidth are acquired in the access point calibration data set based on the second channel bandwidth, and further, the access point device selects an appropriate set of access point radio frequency calibration data to configure each parameter in the access point device according to an actual situation, so that the access point device can communicate with each station device with the second channel bandwidth. In another possible implementation manner, when switching is performed on the second channel bandwidth, the access point device obtains, in the access point calibration data set, access point radio frequency calibration data corresponding to the second channel bandwidth based on the second channel bandwidth, where the access point radio frequency calibration data includes a configuration range of each parameter, and further, the access point device selects an appropriate value according to an actual situation and according to the configuration range of each parameter to configure each parameter, so that the access point device can communicate with each station device with the second channel bandwidth.
And 203, switching to the second channel bandwidth to communicate with the station device in the wireless local area network based on the access point radio frequency calibration data corresponding to the second channel bandwidth.
In this embodiment, after acquiring the access point radio frequency calibration data corresponding to the second channel bandwidth, the access point device switches to the second channel bandwidth for communication with the station device in the wireless local area network based on the access point radio frequency calibration data corresponding to the second channel bandwidth. Optionally. And the access point equipment adjusts each parameter in the access point equipment by taking the access point radio frequency calibration data as a reference, and switches the access point equipment to a second channel bandwidth to communicate with the station equipment in the wireless local area network.
In a possible implementation manner, when the access point device performs switching for a channel bandwidth, based on the access point radio frequency calibration data, each parameter in the access point device is reconfigured, and then the access point device is switched to a second channel bandwidth to communicate with a station device in the wireless local area network.
In another possible implementation manner, when the access point device performs switching for the channel bandwidth, traversing each parameter in the access point device based on the access point radio frequency calibration data, classifying each parameter, acquiring a parameter to be modified and a modified parameter, reconfiguring the parameter to be modified, and further switching the access point device to the second channel bandwidth to communicate with the station device in the wireless local area network. Under the condition, only part of parameters are modified, so that time delay caused by modification of all parameters is avoided, and the timeliness of channel bandwidth switching is ensured.
To sum up, in the technical solution provided in the embodiment of the present application, the access point device is switched from the first channel bandwidth to the second channel bandwidth, and the second channel bandwidth is smaller than the first channel bandwidth, that is, the application provides a channel bandwidth switching manner for the access point device, and the access point device is switched from the first channel bandwidth to the second channel bandwidth, so that the access point device can be switched from the high energy consumption mode to the low energy consumption mode, and energy consumption of the access point device in an unnecessary period is reduced. And when switching the channel bandwidth, directly acquiring the access point radio frequency calibration data corresponding to the second channel bandwidth from the pre-stored access point calibration data set for switching, namely acquiring the configuration parameters required by the second channel bandwidth in advance, and ensuring the timeliness of switching the channel bandwidth.
Next, as shown in fig. 3, a manner of acquiring the access point calibration data set will be described. The method specifically comprises the following steps:
step 301, in the startup phase of the access point device, center frequency points corresponding to various different candidate channel bandwidths are obtained.
The power-on phase refers to the phase between the startup and the start of operation of the access point device. In one possible embodiment, the user controls the access point device to be turned on or off through a hardware component (such as a power-on button or a power-off button) in the access point device; in another possible implementation, the user controls the access point device to be turned on or off through operation controls (such as a power-on icon and a power-off icon) in the software application corresponding to the access point device.
In the embodiment of the application, in a starting-up stage of the access point device, the access point device acquires center frequency points corresponding to various different candidate channel bandwidths respectively. The candidate channel bandwidth refers to a channel bandwidth which corresponds to the access point device and can normally work, and in actual application, the candidate channel bandwidth can be flexibly set and adjusted according to actual conditions, which is not limited in the embodiment of the present application; the center frequency point refers to the center frequency of the channel bandwidth.
And step 302, sequentially controlling the radio frequency circuit to switch to the central frequency point corresponding to each candidate channel bandwidth for radio frequency calibration, and determining access point radio frequency calibration data corresponding to the candidate channel bandwidth to obtain an access point calibration data set.
In the embodiment of the application, after acquiring the center frequency points corresponding to the candidate channel bandwidths, the access point device sequentially controls the radio frequency circuit to switch to the center frequency point corresponding to each candidate channel bandwidth for radio frequency calibration, determines access point radio frequency calibration data corresponding to the candidate channel bandwidths, and obtains an access point calibration data set. Illustratively, as shown in fig. 4, if the bandwidth corresponding to the candidate channel bandwidth is f-40m =5190mhz to f-80m =5210mhz, the corresponding center frequency point is f-20m =5200mhz.
Step 303, storing the access point calibration data set in a memory.
In an embodiment of the present application, after acquiring the above-mentioned calibration data set of the access point, the access point device stores the calibration data set of the access point in the memory.
In summary, in the starting-up stage of the station device, the radio frequency circuit is sequentially controlled to switch to the central frequency point corresponding to each candidate channel bandwidth for radio frequency calibration, so as to obtain access point radio frequency calibration data corresponding to each candidate channel bandwidth, generate an access point calibration data set for storage, and ensure timeliness of subsequent channel bandwidth switching.
Next, the judgment basis of the channel bandwidth switching will be described.
In one possible implementation, the access point device determines whether to switch channel bandwidths by aggregate throughput within the wireless local area network. The throughput refers to the data transmission amount of the station device in a unit time, and the total throughput refers to the total data transmission amount of each station device in a unit time. Optionally, the step 202 includes the following steps:
1. acquiring the total throughput in the wireless local area network;
2. in response to the total throughput being less than a threshold value, a switch from the first channel bandwidth to the second channel bandwidth is determined.
In the embodiment of the application, when the access point device communicates with the first channel bandwidth, the access point device monitors the network status, acquires the total throughput in the wireless local area network based on the network status, and further determines whether to switch the channel bandwidth according to the total throughput. Optionally, if the total throughput is smaller than a threshold, determining that the access point device can switch to a small channel bandwidth, determining to switch from the first channel bandwidth to the second channel bandwidth, and further, switching the access point device from a high power consumption mode (with a high data transmission efficiency requirement) to a low power consumption mode (with a low data transmission efficiency requirement) by switching the channel bandwidth; and if the throughput is greater than or equal to the threshold value, determining that the current energy consumption of the access point equipment is appropriate and the access point equipment cannot be switched to the low-energy consumption state, and determining to keep the first channel bandwidth. The threshold value may be configured when the device leaves a factory, or may be configured by a user in a user-defined manner, which is not limited in the embodiment of the present application.
Optionally, after obtaining the total throughput, the access point device determines the second channel bandwidth based on the total throughput. Exemplarily, referring to fig. 5 in combination, it is assumed that the access device corresponds to a channel bandwidth a =20M, a channel bandwidth B =80M, and a channel bandwidth C =160M. If the access equipment works with the channel bandwidth A, under the condition that the total throughput corresponding to the access point equipment is determined to be more than 20M and less than 80M, the channel bandwidth A is determined to be switched to the channel bandwidth B; and when the total throughput corresponding to the access point device is more than 80M and less than 160M, determining that the access point device is switched from the channel bandwidth A to the channel bandwidth C. If the access equipment works with the channel bandwidth B, under the condition that the throughput corresponding to the access point equipment is smaller than 20M, the channel bandwidth B is determined to be switched to the channel bandwidth A; and under the condition that the throughput corresponding to the access point device is determined to be more than 80M and less than 160M, determining that the access point device is switched from the channel bandwidth B to the channel bandwidth C. If the access equipment works with the channel bandwidth C, under the condition that the total throughput corresponding to the access point equipment is less than 20M, the channel bandwidth C is switched to the channel bandwidth A; and under the condition that the total throughput corresponding to the access point device is determined to be more than 20M and less than 80M, determining that the access point device is switched from the channel bandwidth C to the channel bandwidth B.
In another possible embodiment, the access point device determines whether to perform the switching of the channel bandwidth through the time information. For example, at a user residence, setting 9 to 00; and setting other time periods as busy time periods, wherein the access point device can perform communication with a channel bandwidth with high energy consumption, namely the channel bandwidth at this time can be the first channel bandwidth. Optionally, the step 202 includes the following steps:
1. acquiring the current moment;
2. and in response to the current time belonging to the idle time period, determining to switch from the first channel bandwidth to the second channel bandwidth.
In the embodiment of the application, when the access point device performs communication in a first channel bandwidth, the current working time is monitored, and when it is monitored that the current time is in an idle time period, it is determined that the first channel bandwidth is switched to a second channel bandwidth. It should be noted that, for the idle period of the access point device, the idle period may be set by a worker, or the user may perform the device according to an actual situation, which is not limited in this embodiment of the present application.
In yet another possible implementation, the access point device determines whether to perform the channel bandwidth switching according to the scene information. The context information is used to indicate services currently served by the access point device, such as video telephony, voice telephony, web browsing, and the like. Optionally, the step 202 includes the following steps:
1. acquiring scene information in a wireless local area network;
2. in response to the context information satisfying the requirement, a switch from the first channel bandwidth to the second channel bandwidth is determined.
In the embodiment of the application, when the access point device communicates with the first channel bandwidth, the access point device monitors the network state, determines the currently served service based on the network state, acquires the scene information in the wireless local area network, and further determines whether to switch the channel bandwidth according to the scene information. The network state may include identification information corresponding to a service currently served by the access point device. Optionally, if the context information meets the requirement, determining that the access point device is switched from the first channel bandwidth to the second channel bandwidth; and if the scene information does not meet the requirement, determining that the access point equipment maintains the first channel bandwidth.
The above requirement may be a preset requirement. Exemplarily, one or more services are preset as low-energy-consumption services, and then it is determined that the access point device can communicate with the station device in the wireless local area network with the second channel bandwidth when it is determined that the services corresponding to the scenario information are all services with low requirements on data transmission efficiency.
Of course, in actual operation, if the requirement of the data transmission efficiency of the traffic corresponding to the scenario information cannot be determined, the access point device may determine whether to switch the channel bandwidth based on the total throughput.
In yet another possible implementation, the access point device determines whether to perform the channel bandwidth switching through the user control information. The user control information refers to switching operation for channel bandwidth, which is generated by user trigger. Optionally, the step 202 includes the following steps:
1. acquiring user control information;
2. in response to the user control information comprising a switch operation for the channel bandwidth, a switch from the first channel bandwidth to the second channel bandwidth is determined.
In the embodiment of the application, when the access point device communicates with the first channel bandwidth, the access point device monitors user operation, acquires user control information, and determines whether to switch the channel bandwidth according to the user control information. Optionally, if the user control information includes a switching operation for a channel bandwidth, determining that the access point device is switched from a first channel bandwidth to a second channel bandwidth; if the user control information does not include a handover operation for the channel bandwidth, it is determined that the access point device maintains the first channel bandwidth.
The user operation may be a direct operation of the user on the access point device, for example, the access point device includes a user operation control; alternatively, the user operation may be an indirect operation performed by the user with respect to the access point device, for example, the access point device corresponds to an associated setting program, and the setting program is installed in another device (for example, a user terminal).
It should be noted that, the above-mentioned judgment bases for switching the channel bandwidth are separately described, and in practical applications, the access point device can determine whether to perform the switching of the channel bandwidth according to the one or more judgment bases. Optionally, the access point device acquires reference information required for determining bandwidth switching when performing communication in the first channel bandwidth. Wherein the reference information includes, but is not limited to, at least one of: time information, scene information, user control information, etc. And then, the access point equipment determines whether to switch the channel bandwidth according to the reference information. Optionally, if the reference information meets a set bandwidth switching condition, it is determined that the access point device switches from the first channel bandwidth to the second channel bandwidth. Of course, in practical applications, the above-mentioned reference information may include the total throughput in the wlan.
In summary, the access point device switches the channel bandwidth according to the total throughput in the wlan, and the total throughput needs to detect the acquired data in real time, and the access point device adjusts the channel bandwidth according to the real-time data, so that the control on the channel bandwidth is more accurate, and the actual requirements are met.
In addition, the access device switches the channel bandwidth according to the time information, the scene information or the user control information, and when the control channel bandwidth is switched to a mode meeting the actual requirement, energy consumption caused by acquiring a judgment basis for switching the channel bandwidth in real time is avoided, and the processing overhead of the access point device is reduced.
Referring to fig. 6, a flowchart of a channel bandwidth switching method according to another embodiment of the present application is shown. The method is applicable to the wireless local area network system shown in fig. 1, and for example, the execution subject of each step may be the access point device 10, and the method includes the following steps (601 to 603):
step 601, communicating with a station device in a wireless local area network with a first channel bandwidth.
Step 601 is the same as step 201 in the embodiment of fig. 2, and is specifically referred to the embodiment of fig. 2, which is not repeated herein.
Step 602, in response to switching from the first channel bandwidth to the second channel bandwidth, sending first indication information to a station device in the wireless local area network.
In this embodiment, before performing the handover for the second channel bandwidth, the access point device sends the first indication information to the station device in the wireless local area network. The first indication information is used for indicating the access point device to switch from the first channel bandwidth to the second channel bandwidth. It should be noted that the first indication information is sent before the channel bandwidth is switched, that is, the access point device communicates with the first channel bandwidth before the first indication information is sent, and the access point device converts the first channel bandwidth into the second channel bandwidth after the first indication information is sent.
In a possible implementation manner, when the access point device sends the first indication information, the access point device sends a broadcast data frame to the station device in the wireless local area network in a broadcast manner. Wherein, the broadcast data frame includes the first indication information. Illustratively, the broadcast data frame may be a Beacon frame.
In another possible implementation, when sending the first indication information, the access point device sends a unicast data frame to the station device in the wireless local area network in a unicast manner. Wherein, the unicast data frame includes the first indication information. Illustratively, the unicast data frame may be an Action frame or a Reassoc frame. Optionally, in this embodiment of the application, the unicast data frame includes a field for carrying the first indication information, and in other possible implementations, the unicast data frame may further include an information field for carrying a correspondence of the access point device in the second channel bandwidth.
Step 603, in response to receiving the first acknowledgement response sent by the destination station device in the wireless lan, determining to switch from the first channel bandwidth to the second channel bandwidth.
The first acknowledgement response is response information that the station device sends to the access point device after receiving the first indication information. In this embodiment, after receiving the first indication information from the access point device, the target station device generates a first acknowledgement response based on the first indication information, and sends the first acknowledgement response to the access point device. Correspondingly, the access point device receives the first acknowledgement response and determines to switch from the first channel bandwidth to the second channel bandwidth in case of receiving the first acknowledgement response.
In a possible implementation, the target station device includes all station devices in the wireless local area network. In this case, the access point device waits for the first acknowledgement response of each station device after transmitting the first indication information to the station device within the wireless local area network, and further determines to switch from the first channel bandwidth to the second channel bandwidth after receiving the first acknowledgement response from each station device.
In another possible implementation, the target station device includes a part of station devices in a wireless local area network. The partial site equipment is special equipment with important marks, and the partial site equipment can be configured when the equipment leaves a factory or can be configured by a user in a customized manner, which is not limited in the embodiment of the application. Of course, in practical applications, the above-mentioned partial site devices may also be transmission devices of important services, such as devices that are performing video calls. In this case, after sending the first indication information to each station device in the wireless lan, the access point device waits for the first acknowledgement response of the partial station device, and further determines to switch from the first channel bandwidth to the second channel bandwidth after receiving the first acknowledgement response from the partial station device. In this case, of course, other station devices in the wireless lan except the target station device may also send an acknowledgement response to the access point device, but the access point device does not use the acknowledgement response sent by the other station devices as a basis for acknowledging whether to perform the handover of the second channel bandwidth.
Optionally, the station device sends a unicast data frame to the access point device in a unicast manner, where the unicast data frame includes the first acknowledgement response. Illustratively, the unicast data frame may be an Action frame or a Reassoc frame.
Optionally, in this embodiment of the application, the first acknowledgement response is used to indicate that the demanded channel bandwidth of the destination station device matches the second channel bandwidth, for example, the demanded channel bandwidth of the destination station device is less than or equal to the second channel bandwidth. In this case, after acquiring the first acknowledgement response, the access point device may determine to switch from the first channel bandwidth to the second channel bandwidth, acquire access point radio frequency calibration data corresponding to the second channel bandwidth from the access point calibration data set, and switch the access point device to the second channel bandwidth for communication based on the access point radio frequency calibration data corresponding to the second channel bandwidth.
It should be noted that, in this embodiment, in addition to the first acknowledgement response, the target station device may also send a second acknowledgement response to the access point device. The second acknowledgement response is used to indicate that the demanded channel bandwidth of the destination station device does not match the second channel bandwidth, for example, the demanded channel bandwidth of the destination station device is greater than the second channel bandwidth. Optionally, the access point device determines the third channel bandwidth from multiple different candidate channel bandwidths corresponding to the access point device, when receiving the second acknowledgement response sent by the target station device in the wireless local area network. The second acknowledgement response includes first feedback information indicating a required channel bandwidth of the target station device, and the access point device may determine, based on the first feedback information, a third channel bandwidth from the candidate channel bandwidths, where the third channel bandwidth is a minimum candidate channel bandwidth greater than or equal to the required channel bandwidth. Further, the access point device obtains access point radio frequency calibration data corresponding to the third channel bandwidth from the access point calibration data set, and switches the access point device to the third channel bandwidth to communicate with the station device in the wireless local area network based on the access point radio frequency calibration data corresponding to the third channel bandwidth.
To sum up, according to the technical solution provided in this embodiment, before the first channel bandwidth is switched to the second channel bandwidth, the access point device sends the first indication information to the station device in the wireless lan, so that the station device knows that the access point device is to switch from the first channel bandwidth to the second channel bandwidth, thereby ensuring that the operating state of the station device matches with the channel bandwidth of the access point device, avoiding the problem of data loss and the like caused by the fact that the required bandwidth corresponding to the station device is higher than the channel bandwidth of the access point device, and ensuring the reliability of data transmission.
Of course, in the present application, the access point device may also switch from the second channel bandwidth to the first channel bandwidth.
Referring to fig. 7, a flowchart of a channel bandwidth switching method according to another embodiment of the present application is shown. The method is applicable to the wireless local area network system shown in fig. 1, and as the execution subject of each step may be the access point device 10, the method includes the following steps (701 to 703):
step 701, in response to switching from the second channel bandwidth to the first channel bandwidth, acquiring access point radio frequency calibration data corresponding to the first channel bandwidth from the access point calibration data set.
In this embodiment, when the access point device communicates with the second channel bandwidth, the access point device may monitor a network state, and then switch the channel bandwidth according to the network state. After the access point device obtains the network state, when the access point device is determined to need to be switched to the channel bandwidth with high data transmission efficiency according to the network state, the access point device determines to be switched from the second channel bandwidth to the first channel bandwidth, and access point radio frequency calibration data corresponding to the first channel bandwidth are obtained from the access point calibration data set. Wherein the first channel bandwidth is greater than the second channel bandwidth.
In a possible implementation manner, the access point device actively acquires reference information required for mode switching determination according to the station device, and further determines to switch from the second channel bandwidth to the first channel bandwidth when the reference information meets a set switching requirement. Wherein, the reference information includes but is not limited to at least one of the following: total throughput, time information, scenario information, user control information, etc. within the wireless local area network; the switching requirement may be that the total throughput is greater than a threshold value, the current time is in a busy time period, the service corresponding to the scenario information is a service with a high requirement on data transmission efficiency, the user control information includes a switching operation for the second channel bandwidth, and the like.
In another possible implementation, the access point device obtains a mode switching request from the station device passively, and then determines to switch from the second channel bandwidth to the first channel bandwidth according to the mode switching request. The mode switching request is a request sent by the station device to the access point device according to an actual situation, and is used for improving the data transmission efficiency of the access device. Optionally, the station device may send a mode switch request to the access point device in case the required channel bandwidth increases. The mode switching request includes a required channel bandwidth corresponding to the site device.
Step 702, based on the access point radio frequency calibration data corresponding to the first channel bandwidth, switching to the first channel bandwidth to communicate with the station device in the wireless local area network.
In this embodiment, after acquiring access point radio frequency calibration data corresponding to a first channel bandwidth, an access point device switches the access point device to the first channel bandwidth to communicate with a station device in a wireless local area network based on the access point radio frequency calibration data corresponding to the first channel bandwidth.
And step 703, after switching to the first channel bandwidth, sending second indication information to the station device in the wireless local area network.
In this embodiment, after switching to the first channel bandwidth for communication, the access point device sends second indication information to the station device in the wireless local area network. Wherein the second indication information is used for indicating switching from the second channel bandwidth to the first channel bandwidth.
Optionally, the second indication information includes the first channel bandwidth. After the station device acquires the second indication information, the requirement of the station device is flexibly adjusted based on the first channel bandwidth in the second indication information. Illustratively, the second indication information includes a channel bandwidth 160M, and after receiving the second indication information, the station device adjusts the current operating bandwidth from 20M to 160M.
Of course, after adjusting the requirement, the station device may also send a second acknowledgement response to the access point device, and determine that the second indication information is successfully received.
In a possible implementation, when sending the second indication information, the access point device sends a broadcast data frame to the station device in the wireless local area network in a broadcast manner. Wherein, the broadcast data frame includes the second indication information.
In another possible implementation, when sending the second indication information, the access point device sends a unicast data frame to the station device in the wireless lan in a unicast manner. And the unicast data frame comprises the second indication information.
To sum up, in the technical solution provided in the embodiment of the present application, the access point device is switched from the second channel bandwidth to the first channel bandwidth, and the second channel bandwidth is smaller than the first channel bandwidth, that is, the application provides a channel bandwidth switching manner for the access point device, so that the access point device can be switched from the low power consumption mode to the high power consumption mode. And after the access point device switches from the low-energy-consumption channel bandwidth to the high-energy-consumption channel bandwidth, the access point device sends second indication information to the station device to inform the station device of the channel bandwidth corresponding to the access point device, so that the station device can improve the transmission efficiency of data in time after the channel bandwidth of the access point device is switched, and the high efficiency of data transmission is ensured.
Referring to fig. 8, a flowchart of a channel bandwidth switching method according to another embodiment of the present application is shown. The method is applicable to the wireless local area network system shown in fig. 1, and if the execution subject of each step may be the station device 20, the method includes the following steps (801 to 802):
step 801, receiving first indication information sent by an access point device of a wireless local area network.
The first indication information is used for indicating the access point equipment to switch from a first channel bandwidth to a second channel bandwidth, and the second channel bandwidth is smaller than the first channel bandwidth. Optionally, the access point device is configured to acquire access point radio frequency calibration data corresponding to the second channel bandwidth from a pre-stored access point calibration data set, and further switch to the second channel bandwidth to communicate with the station device in the wireless local area network based on the access point radio frequency calibration data corresponding to the second channel bandwidth.
In this embodiment, before determining to switch from the first channel bandwidth to the second channel bandwidth, the access point device sends first indication information to the station device, and correspondingly, the station device receives the first indication information. And the station equipment is positioned in the wireless local area network corresponding to the access point equipment.
In one possible implementation, the first indication information is transmitted in a broadcast manner, and correspondingly, the station device receives a broadcast data frame transmitted in the broadcast manner by the access point device. The broadcast data frame comprises first indication information.
In another possible embodiment, the first indication information is sent in a unicast manner, and correspondingly, the station device receives a unicast data frame sent in a unicast manner by the access point device. The unicast data frame comprises first indication information.
Step 802, communicating with an access point device based on a second channel bandwidth.
In this embodiment of the application, after receiving the first indication information, the station device communicates with the access point device based on a second channel bandwidth indicated by the first indication information according to the second channel bandwidth. Optionally, after acquiring the first indication information, the station device determines, based on a second channel bandwidth indicated by the first indication information, whether to modify the operation data in the device.
In one possible embodiment, the current operating state of the station device matches the second channel bandwidth, such as the data transfer efficiency is less than or equal to the data transfer efficiency indicated by the second channel bandwidth, the current operating bandwidth is less than or equal to the second channel bandwidth, and so on. In this case, after acquiring the first indication information, the station device may communicate with the access point device based on the second channel bandwidth without performing an additional operation, that is, ensuring the current operating state.
In another possible implementation, the current operating state of the station device does not match the second channel bandwidth, such as the data transmission rate is greater than the data transmission efficiency indicated by the second channel bandwidth, the current operating bandwidth is greater than the second channel bandwidth, and so on. Alternatively, the station device may adapt to the second channel bandwidth by adjusting its operating parameter. In one possible embodiment, after determining that the access point device switches to the second channel bandwidth, the station device changes the data transmission frequency so that the data transmission frequency conforms to the second channel bandwidth. In another possible implementation manner, after determining that the access point device switches to the second channel bandwidth, the station device obtains station radio frequency calibration data corresponding to the second channel bandwidth from a pre-stored station calibration data set, and switches to the second channel bandwidth for communication with the access point device based on the station radio frequency calibration data corresponding to the second channel bandwidth. The site calibration data set comprises site radio frequency calibration data respectively corresponding to a plurality of different candidate channel bandwidths.
It should be noted that, in this embodiment of the application, after acquiring the first indication information, the station device sends an acknowledgement response corresponding to the first indication information to the access point device. Optionally, after acquiring the first indication information, the station device determines, based on a second channel bandwidth indicated by the first indication information and in combination with its operating condition, whether to communicate with the access point device at the second channel bandwidth.
In one possible implementation, the station device sends a first acknowledgement response to the access point device when determining its operating condition and being capable of communicating with the access point device at the second channel bandwidth. Wherein the first acknowledgement response is to indicate that the station device agrees to switch to the second channel bandwidth by the access point device.
In another possible implementation, the station device sends a second acknowledgement response to the access point device when determining that its operating condition does not enable communication with the access point device at the second channel bandwidth. The second acknowledgement response includes first feedback information used for indicating a required channel bandwidth of the station device, at this time, the access point device is configured to obtain access point radio frequency calibration data corresponding to a third channel bandwidth from the access point calibration data set, and switch to the third channel bandwidth to communicate with the station device in the wireless local area network based on the access point radio frequency calibration data corresponding to the third channel bandwidth, where the third channel bandwidth is a minimum candidate channel bandwidth greater than or equal to the required channel bandwidth.
In addition, in this embodiment of the application, after switching from the second channel bandwidth to the first channel bandwidth, the access point device sends second indication information to the station device, and correspondingly, the station device receives the second indication information sent to the station device after switching from the second channel bandwidth to the first channel bandwidth by the access point device. Wherein the second indication information is used for indicating the access point device to switch from the second channel bandwidth to the first channel bandwidth. After determining the first channel bandwidth indicated by the second indication information, the station device communicates with the access point device based on the first channel bandwidth.
To sum up, in the technical solution provided in this embodiment of the application, the station device adjusts the data transmission condition of the station device according to the first indication information sent by the access point device, so as to ensure that the data transmission condition of the station device matches with the channel bandwidth of the access point device, and ensure the reliability and accuracy of data transmission.
In addition, referring to fig. 9, the interaction between the access point device and the station device is described by taking unicast as an example. After the access point device establishes a connection with the site device, if the access point device determines that the total throughput in the wireless local area network is less than or equal to a threshold, the access point device sends a unicast data frame (Action frame) to the site device, where the Action frame includes first indication information, and the first indication information is used to indicate that the access point device switches from the first channel bandwidth to the second channel bandwidth, and further, after obtaining the Action frame, the site device sends an Acknowledgement Character (ACK) to the access point device, where the ACK is used to indicate that the site device successfully receives the Action frame; and then, after adjusting the working channel bandwidth to a channel bandwidth matched with the second channel bandwidth according to the first indication information, the site device sends a unicast data frame (Action frame) to the site device, where the Action frame is used to indicate that the site device performs communication under the channel bandwidth matched with the second channel bandwidth, and further, after acquiring the Action frame, the access point device sends an ACK to the site device, and switches the access point device from the first channel bandwidth to the second channel bandwidth, where the ACK is used to indicate that the access point device successfully receives the Action frame, and optionally, the second channel bandwidth of the access point device is 20M. Similarly, if the access point device determines that the total throughput in the wireless local area network is greater than the threshold value, the access point device switches from the second channel bandwidth to the first channel bandwidth, and sends a unicast data frame (Action frame) to the station device, where the Action frame includes second indication information, and further, after acquiring the Action frame, the station device sends an Acknowledgement Character (ACK) to the access point device, where the ACK is used to indicate that the station device successfully receives the Action frame; and then, after adjusting the working channel bandwidth to a channel bandwidth matched with the first channel bandwidth according to the second indication information, the station device sends a unicast data frame (Action frame) to the station device, where the Action frame is used to indicate that the station device communicates under the channel bandwidth matched with the first channel bandwidth, and further, after acquiring the Action frame, the access point device sends an ACK to the station device, where the ACK is used to indicate that the access point device successfully receives the Action frame, and optionally, the access point device has a first channel bandwidth of 80M/160M.
In the above, the operation mode switching manner in the present application is described in terms of channel bandwidth, and in practical applications, the operation mode of the access point device may correspond to other data, such as the number of antennas.
Optionally, when the access point device is in the first working mode, the access point device obtains reference information required for mode switching determination, and further switches from the first working mode to the second working mode when the reference information meets a set mode switching condition. The reference information required for the mode switching determination includes, but is not limited to, at least one of the following: total throughput, time information, scenario information, user control information, etc. within the wireless local area network.
In a possible implementation manner, the first operating mode is a high-energy-consumption operating mode (with a high channel bandwidth and a large number of antennas), the second operating mode is a low-energy-consumption operating mode (with a low channel bandwidth and a small number of antennas), the mode switching condition may be that the total throughput is smaller than a threshold, the current time is in an idle period, the service corresponding to the context information is a service with a low requirement on data transmission efficiency, the user control information includes a switching operation for the second operating mode, and the like.
In another possible embodiment, the first operating mode is a low energy consumption operating mode (with a low channel bandwidth and a small number of antennas), the second operating mode is a high energy consumption operating mode (with a high channel bandwidth and a large number of antennas), and the mode switching condition may be that the total throughput is greater than a threshold, the current time is in a busy time period, the service corresponding to the scenario information is a service with a high requirement on data transmission efficiency, the user control information includes a switching operation for the second operating mode, and the like.
The following are embodiments of the apparatus of the present application that may be used to perform embodiments of the method of the present application. For details which are not disclosed in the embodiments of the apparatus of the present application, reference is made to the embodiments of the method of the present application.
Referring to fig. 10, a block diagram of a channel bandwidth switching apparatus according to an embodiment of the present application is shown. The device has the functions of realizing the method examples, and the functions can be realized by hardware or by hardware executing corresponding software. The apparatus may be the access point device described above, or may be provided in the access point device. The apparatus 1000 comprises: a device running module 1010, a data obtaining module 1020 and a bandwidth switching module 1030.
A device operation module 1010, configured to communicate with a station device in a wireless local area network with a first channel bandwidth.
A data obtaining module 1020, configured to obtain, in response to switching from the first channel bandwidth to a second channel bandwidth, access point radio frequency calibration data corresponding to the second channel bandwidth from a pre-stored access point calibration data set; the access point calibration data set comprises access point radio frequency calibration data corresponding to various different candidate channel bandwidths.
A bandwidth switching module 1030, configured to switch to the second channel bandwidth to communicate with a station device in the wireless local area network based on the access point radio frequency calibration data corresponding to the second channel bandwidth.
In an exemplary embodiment, as shown in fig. 11, the apparatus 1000 further comprises: a frequency point obtaining module 1040, a radio frequency calibration module 1050 and a data storage module 1060.
A frequency point obtaining module 1040, configured to obtain, at a power-on stage of the access point device, center frequency points corresponding to the multiple different candidate channel bandwidths, respectively.
And the radio frequency calibration module 1050 is configured to sequentially control a radio frequency circuit to switch to a center frequency point corresponding to each candidate channel bandwidth for radio frequency calibration, and determine access point radio frequency calibration data corresponding to the candidate channel bandwidth to obtain the access point calibration data set.
A data storage module 1060 for storing the access point calibration data set in a memory.
In an exemplary embodiment, as shown in fig. 11, the apparatus 1000 further comprises: a channel determination module 1070.
A channel bandwidth determining module 1070, configured to obtain the total throughput in the wlan; determining to switch from the first channel bandwidth to the second channel bandwidth in response to the overall throughput being less than a threshold value.
In an exemplary embodiment, the channel determining module 1070 is configured to obtain reference information required for determining bandwidth switching, where the reference information includes at least one of: time information, scene information, user control information; and determining to switch from the first channel bandwidth to the second channel bandwidth in response to the reference information meeting a set bandwidth switching condition.
In an exemplary embodiment, as shown in fig. 11, the apparatus 1000 further comprises: an indication transmitting module 1080 and a response receiving module 1090.
An indication sending module 1080, configured to send first indication information to a station device in the wireless local area network, where the first indication information is used to indicate switching from the first channel bandwidth to the second channel bandwidth.
A response receiving module 1090, configured to determine to switch from the first channel bandwidth to the second channel bandwidth in response to receiving a first acknowledgement response sent by a target station device in the wireless local area network, where the first acknowledgement response is used to indicate that the target station device agrees to switch from the access point device to the second channel bandwidth.
In an exemplary embodiment, the indication sending module 1080 is configured to send a broadcast data frame to a station device in the wireless local area network in a broadcast manner, where the broadcast data frame includes the first indication information; or sending a unicast data frame to the station equipment in the wireless local area network in a unicast mode, wherein the unicast data frame comprises the first indication information.
In an exemplary embodiment, the bandwidth determining module 1070 is further configured to determine a third channel bandwidth from the plurality of different candidate channel bandwidths in response to receiving a second acknowledgement response sent by a destination station device in the wireless local area network, where the second acknowledgement response includes first feedback information indicating a required channel bandwidth of the destination station device, and the third channel bandwidth is a minimum candidate channel bandwidth greater than or equal to the required channel bandwidth.
In an exemplary embodiment, the data obtaining module 1020 is further configured to obtain, from the access point calibration data set, access point radio frequency calibration data corresponding to the third channel bandwidth.
In an exemplary embodiment, the bandwidth switching module 1030 is further configured to switch to the third channel bandwidth to communicate with a station device in the wireless local area network based on the access point radio frequency calibration data corresponding to the third channel bandwidth.
In an exemplary embodiment, the data obtaining module 1020 is further configured to obtain, from the access point calibration data set, access point radio frequency calibration data corresponding to the first channel bandwidth in response to switching from the second channel bandwidth to the first channel bandwidth.
In an exemplary embodiment, the bandwidth switching module 1030 is further configured to switch to the first channel bandwidth to communicate with a station device in the wireless local area network based on access point radio frequency calibration data corresponding to the first channel bandwidth;
in an exemplary embodiment, the indication sending module 1080 is further configured to send second indication information to the station device in the wireless local area network after switching to the first channel bandwidth, where the second indication information is used to indicate switching from the second channel bandwidth to the first channel bandwidth.
In summary, according to the technical solution provided by the embodiment of the present application, the access point device is switched from the first channel bandwidth to the second channel bandwidth, and the second channel bandwidth is smaller than the first channel bandwidth, that is, the application provides a channel bandwidth switching manner for the access point device, and the access point device is switched from the first channel bandwidth to the second channel bandwidth, so that the access point device can be switched from the high energy consumption mode to the low energy consumption mode, and energy consumption of the access point device in an unnecessary period is reduced. And when switching the channel bandwidth, directly acquiring the access point radio frequency calibration data corresponding to the second channel bandwidth from the pre-stored access point calibration data set for switching, namely acquiring the configuration parameters required by the second channel bandwidth in advance, and ensuring the timeliness of switching the channel bandwidth.
Referring to fig. 12, a block diagram of a channel bandwidth switching apparatus according to another embodiment of the present application is shown. The device has the functions of realizing the method examples, and the functions can be realized by hardware or by hardware executing corresponding software. The device may be the station device described above, or may be provided in the station device. The apparatus 1200 includes: an indication receiving module 1210 and a device operating module 1220.
An indication receiving module 1210, configured to receive first indication information sent by an access point device of a wireless local area network, where the first indication information is used to instruct the access point device to switch from a first channel bandwidth to a second channel bandwidth, and the second channel bandwidth is smaller than the first channel bandwidth; the access point device is configured to acquire access point radio frequency calibration data corresponding to the second channel bandwidth from a pre-stored access point calibration data set, and switch to the second channel bandwidth to communicate with the station device in the wireless local area network based on the access point radio frequency calibration data corresponding to the second channel bandwidth.
A device operation module 1220 configured to communicate with the access point device based on the second channel bandwidth.
In an exemplary embodiment, the device operating module 1220 is configured to obtain, from a pre-stored site calibration data set, site radio frequency calibration data corresponding to the second channel bandwidth; the site calibration data set comprises site radio frequency calibration data corresponding to various different candidate channel bandwidths respectively; and switching to the second channel bandwidth to communicate with the access point device based on the station radio frequency calibration data corresponding to the second channel bandwidth.
In an exemplary embodiment, as shown in fig. 13, the apparatus 1200 further comprises: the response sending module 1230.
A response sending module 1230, configured to send a first acknowledgement response to the access point device, where the first acknowledgement response is used to indicate that the station device agrees to switch to the second channel bandwidth by the access point device; or sending a second acknowledgement response to the access point device, where the second acknowledgement response includes first feedback information used to indicate a required channel bandwidth of the station device; the access point device is configured to obtain access point radio frequency calibration data corresponding to a third channel bandwidth from the access point calibration data set, and switch to the third channel bandwidth to communicate with a station device in the wireless local area network based on the access point radio frequency calibration data corresponding to the third channel bandwidth, where the third channel bandwidth is a minimum candidate channel bandwidth that is greater than or equal to the required channel bandwidth.
In an exemplary embodiment, the first acknowledgement response includes first feedback information, where the first feedback information is used to indicate a required channel bandwidth of the station device; the access point device is configured to determine whether to switch to the second channel bandwidth for communication according to the required channel bandwidth.
In an exemplary embodiment, the indication receiving module 1210 is configured to receive a broadcast data frame sent by the access point device in a broadcast manner, where the broadcast data frame includes the first indication information; or receiving a unicast data frame sent by the access point device in a unicast manner, where the unicast data frame includes the first indication information.
In an exemplary embodiment, the indication receiving module 1210 is further configured to receive second indication information sent by the access point device to the station device after switching from the second channel bandwidth to the first channel bandwidth, where the second indication information is used to indicate that the access point device switches from the second channel bandwidth to the first channel bandwidth.
In an exemplary embodiment, the device operating module 1220 is further configured to communicate with the access point device based on the first channel bandwidth.
To sum up, according to the technical solution provided in the embodiment of the present application, the station device adjusts the data transmission condition of the station device according to the first indication information sent by the access point device, so as to ensure that the data transmission condition of the station device matches with the channel bandwidth of the access point device, and ensure reliability and accuracy of data transmission.
It should be noted that, when the apparatus provided in the foregoing embodiment implements the functions thereof, only the division of the functional modules is illustrated, and in practical applications, the functions may be distributed by different functional modules according to needs, that is, the internal structure of the apparatus may be divided into different functional modules to implement all or part of the functions described above. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and specific implementation processes thereof are described in detail in the method embodiments, which are not described herein again.
Referring to fig. 14, a block diagram of an access point device/station device according to an embodiment of the present disclosure is shown. The access point device/station device may be configured to implement the functions of the channel bandwidth switching method described above. The access point device/station device 140 may include: processor 141, receiver 142, transmitter 143, memory 144, and bus 145.
The processor 141 includes one or more processing cores, and the processor 101 executes various functional applications and information processing by running software programs and modules.
The receiver 142 and the transmitter 143 may be implemented as one communication component, which may be a communication chip.
The memory 144 is coupled to the processor 141 by a bus 145.
The memory 144 may be used to store computer programs for execution by the processor 141 to implement the various steps performed by the access point device/station device in the above-described method embodiments.
Further, the memory 144 may be implemented by any type or combination of volatile or non-volatile storage devices, including, but not limited to: RAM (Random-Access Memory) and ROM (Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash Memory or other solid state storage technology, CD-ROM (Compact Disc Read-Only Memory), DVD (Digital Video Disc) or other optical storage, magnetic tape cartridge, magnetic tape, magnetic disk storage or other magnetic storage devices.
In an exemplary embodiment, a computer readable storage medium is also provided, in which a computer program is stored, which when executed by a processor of an access point device, implements the above-described channel bandwidth switching method on the access point device side.
In an exemplary embodiment, a computer-readable storage medium is further provided, in which a computer program is stored, and the computer program is executed by a processor of a station apparatus to implement the above channel bandwidth switching method on the station apparatus side.
Optionally, the computer-readable storage medium may include: ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State drive), or optical disk. The Random Access Memory may include a ReRAM (resistive Random Access Memory) and a DRAM (Dynamic Random Access Memory).
In an exemplary embodiment, a computer program product or computer program is also provided, the computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the access point device reads the computer instructions from the computer-readable storage medium, and executes the computer instructions to cause the access point device to execute the above channel bandwidth switching method.
In an exemplary embodiment, a computer program product or computer program is also provided, the computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the station device reads the computer instructions from the computer-readable storage medium, and executes the computer instructions, so that the station device executes the channel bandwidth switching method.
It should be understood that reference to "a plurality" herein means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. In addition, the step numbers described herein only exemplarily show one possible execution sequence among the steps, and in some other embodiments, the steps may also be executed out of the numbering sequence, for example, two steps with different numbers are executed simultaneously, or two steps with different numbers are executed in a reverse order to the order shown in the figure, which is not limited by the embodiment of the present application.
The above description is only exemplary of the application and should not be taken as limiting the application, and any modifications, equivalents, improvements and the like that are made within the spirit and principle of the application should be included in the protection scope of the application.

Claims (15)

1. A channel bandwidth switching method, performed by an access point device of a wireless local area network, the method comprising:
communicating with a site device within the wireless local area network with a first channel bandwidth;
in response to switching from the first channel bandwidth to a second channel bandwidth, acquiring access point radio frequency calibration data corresponding to the second channel bandwidth from a prestored access point calibration data set; the access point calibration data set comprises access point radio frequency calibration data corresponding to various different candidate channel bandwidths respectively, and the second channel bandwidth is smaller than the first channel bandwidth;
and switching to the second channel bandwidth to communicate with the station equipment in the wireless local area network based on the access point radio frequency calibration data corresponding to the second channel bandwidth.
2. The method of claim 1, further comprising:
acquiring central frequency points corresponding to the various different candidate channel bandwidths at the starting-up stage of the access point equipment;
sequentially controlling a radio frequency circuit to be switched to a central frequency point corresponding to each candidate channel bandwidth for radio frequency calibration, and determining access point radio frequency calibration data corresponding to the candidate channel bandwidth to obtain an access point calibration data set;
storing the access point calibration data set in a memory.
3. The method of claim 1, further comprising:
acquiring the total throughput in the wireless local area network;
determining to switch from the first channel bandwidth to the second channel bandwidth in response to the total throughput being less than a threshold value.
4. The method of claim 1, further comprising:
acquiring reference information required by bandwidth switching judgment, wherein the reference information comprises at least one of the following items: time information, scene information, user control information;
and determining to switch from the first channel bandwidth to the second channel bandwidth in response to the reference information meeting a set bandwidth switching condition.
5. The method of claim 1, further comprising:
sending first indication information to a station device in the wireless local area network, wherein the first indication information is used for indicating switching from the first channel bandwidth to the second channel bandwidth;
and determining to switch from the first channel bandwidth to the second channel bandwidth in response to receiving a first acknowledgement response sent by a target station device in the wireless local area network, wherein the first acknowledgement response is used for indicating that the target station device agrees to switch from the access point device to the second channel bandwidth.
6. The method of claim 5, wherein the sending the first indication information to the station device in the wireless local area network comprises:
sending a broadcast data frame to the site equipment in the wireless local area network in a broadcast mode, wherein the broadcast data frame comprises the first indication information;
alternatively, the first and second electrodes may be,
and sending a unicast data frame to the station equipment in the wireless local area network in a unicast mode, wherein the unicast data frame comprises the first indication information.
7. The method of claim 5, wherein after sending the first indication information to the station device in the wireless local area network, further comprising:
determining a third channel bandwidth from the plurality of different candidate channel bandwidths in response to receiving a second acknowledgement response sent by a destination station device in the wireless local area network, wherein the second acknowledgement response comprises first feedback information used for indicating a required channel bandwidth of the destination station device, and the third channel bandwidth is a minimum candidate channel bandwidth which is greater than or equal to the required channel bandwidth;
acquiring access point radio frequency calibration data corresponding to the third channel bandwidth from the access point calibration data set;
and switching to the third channel bandwidth to communicate with the station equipment in the wireless local area network based on the access point radio frequency calibration data corresponding to the third channel bandwidth.
8. A channel bandwidth switching method, wherein the method is performed by a station device of a wireless local area network, and the method comprises:
receiving first indication information sent by an access point device of the wireless local area network, wherein the first indication information is used for indicating the access point device to switch from a first channel bandwidth to a second channel bandwidth, and the second channel bandwidth is smaller than the first channel bandwidth; the access point device is configured to acquire access point radio frequency calibration data corresponding to the second channel bandwidth from a pre-stored access point calibration data set, and switch to the second channel bandwidth to communicate with the station device in the wireless local area network based on the access point radio frequency calibration data corresponding to the second channel bandwidth;
communicate with the access point device based on the second channel bandwidth.
9. The method of claim 8, wherein the communicating with the access point device based on the second channel bandwidth comprises:
acquiring site radio frequency calibration data corresponding to the second channel bandwidth from a pre-stored site calibration data set; the site calibration data set comprises site radio frequency calibration data corresponding to various different candidate channel bandwidths respectively;
and switching to the second channel bandwidth to communicate with the access point device based on the station radio frequency calibration data corresponding to the second channel bandwidth.
10. The method according to claim 8, wherein after receiving the first indication information sent by the access point device of the wireless local area network, the method further comprises:
sending a first acknowledgement response to the access point device, the first acknowledgement response indicating that the station device agrees to switch to the second channel bandwidth;
alternatively, the first and second electrodes may be,
sending a second acknowledgement response to the access point device, where the second acknowledgement response includes first feedback information for indicating a required channel bandwidth of the station device; the access point device is configured to acquire access point radio frequency calibration data corresponding to a third channel bandwidth from the access point calibration data set, and switch to the third channel bandwidth to communicate with a station device in the wireless local area network based on the access point radio frequency calibration data corresponding to the third channel bandwidth, where the third channel bandwidth is a minimum candidate channel bandwidth that is greater than or equal to the required channel bandwidth.
11. A channel bandwidth switching apparatus, the apparatus comprising:
the device operation module is used for communicating with the site device in the wireless local area network by using a first channel bandwidth;
the data acquisition module is used for responding to the switching from the first channel bandwidth to a second channel bandwidth and acquiring access point radio frequency calibration data corresponding to the second channel bandwidth from a prestored access point calibration data set; the access point calibration data set comprises access point radio frequency calibration data corresponding to various different candidate channel bandwidths respectively, and the second channel bandwidth is smaller than the first channel bandwidth;
and the bandwidth switching module is used for switching to the second channel bandwidth to communicate with the station equipment in the wireless local area network based on the access point radio frequency calibration data corresponding to the second channel bandwidth.
12. A channel bandwidth switching apparatus, the apparatus comprising:
an indication receiving module, configured to receive first indication information sent by an access point device of a wireless local area network, where the first indication information is used to indicate that the access point device switches from a first channel bandwidth to a second channel bandwidth, and the second channel bandwidth is smaller than the first channel bandwidth; the access point device is configured to acquire access point radio frequency calibration data corresponding to the second channel bandwidth from a pre-stored access point calibration data set, and switch to the second channel bandwidth to communicate with the station device in the wireless local area network based on the access point radio frequency calibration data corresponding to the second channel bandwidth;
a device operating module to communicate with the access point device based on the second channel bandwidth.
13. An access point device, characterized in that the access point device comprises a processor and a memory, in which a computer program is stored which is executed by the processor to implement the channel bandwidth switching method according to any one of claims 1 to 7.
14. A station device, characterized in that the station device comprises a processor and a memory, wherein the memory stores a computer program, and the computer program is executed by the processor to implement the channel bandwidth switching method according to any one of claims 8 to 10.
15. A computer-readable storage medium, in which a computer program is stored, the computer program being executed by a processor to implement the channel bandwidth switching method according to any one of claims 1 to 7, or to implement the channel bandwidth switching method according to any one of claims 8 to 10.
CN202110437035.1A 2021-04-22 2021-04-22 Channel bandwidth switching method, device, equipment and storage medium Pending CN115243332A (en)

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