CN114513820A - Method for switching access point and related equipment thereof - Google Patents

Method for switching access point and related equipment thereof Download PDF

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Publication number
CN114513820A
CN114513820A CN202011279361.6A CN202011279361A CN114513820A CN 114513820 A CN114513820 A CN 114513820A CN 202011279361 A CN202011279361 A CN 202011279361A CN 114513820 A CN114513820 A CN 114513820A
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China
Prior art keywords
sta
aps
wireless signal
current
signal strength
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CN202011279361.6A
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Chinese (zh)
Inventor
廖欣
黄昌桂
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN202011279361.6A priority Critical patent/CN114513820A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data

Abstract

The embodiment of the application discloses a method for switching access points and related equipment thereof, which can provide better internet experience for users. The method of the embodiment of the application comprises the following steps: the STA acquires the wireless signal intensity from the current AP to the STA and the sending power of the current AP; the STA determines the path loss from the current AP to the STA based on the wireless signal strength from the current AP to the STA and the transmission power of the current AP; the STA determines the wireless signal strength from the STA to the current AP based on the path loss from the current AP to the STA and the sending power of the STA; and if the STA determines that the wireless signal intensity from the STA to the current AP is less than a preset threshold value, switching to the target AP.

Description

Method for switching access point and related equipment thereof
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method for switching access points and related devices.
Background
When a Station (STA) moves in a Wireless Local Area Network (WLAN), the STA may switch from an AP to which the STA is currently connected (hereinafter, referred to as a current AP) to another AP, so as to keep the wifi network connection uninterrupted, which is called wifi roaming.
At present, in a wifi roaming mechanism used by an STA, the wireless signal strength from a current AP to the STA (i.e., the strength of a downlink signal received by the STA) is mainly obtained, then, the wireless signal strength is compared with a preset threshold, and if the wireless signal strength is lower than the preset threshold, wifi roaming is triggered, that is, the STA is switched from the current AP to another AP.
However, in the wifi roaming mechanism, the STA only determines whether wifi roaming is triggered according to the wireless signal strength from the current AP to the STA, if the value of the preset threshold is too low, the wireless signal between the STA and the current AP may be very weak, which may result in failure of connection disconnection roaming, and if the value of the preset threshold is too high, the STA may roam frequently. Therefore, the current wifi roaming mechanism considers a single factor, which causes that a preset threshold value is difficult to obtain a proper numerical value, and further cannot provide a better internet experience for a user, so that a new wifi roaming mechanism is provided, which becomes a technical problem to be solved urgently.
Disclosure of Invention
The embodiment of the application provides a method for switching access points and related equipment thereof, which can provide better internet experience for users.
A first aspect of an embodiment of the present application provides a method for switching an access point, where the method includes: the STA can acquire the wireless signal strength from the current AP to the STA and the transmission power of the current AP in real time. Then, the STA determines the path loss from the current AP to the STA based on the wireless signal strength from the current AP to the STA and the transmission power of the current AP. Then, the STA determines the wireless signal strength from the STA to the current AP based on the path loss from the current AP to the STA and the transmission power of the STA. And finally, if the STA determines that the wireless signal intensity from the STA to the current AP is less than a preset threshold value, switching to the target AP.
From the above method, it can be seen that: after the STA acquires the wireless signal strength from the current AP to the STA (i.e., the strength of the downlink signal sent by the current AP), the STA can estimate the wireless signal strength from the STA to the current AP (i.e., the strength of the uplink signal sent by the STA) according to the strength of the downlink signal, so as to determine whether wifi roaming is triggered based on the strength of the uplink signal. Therefore, the embodiment of the application provides a new wifi roaming mechanism, in the mechanism, the STA judges whether wifi roaming is triggered or not through the strength of the uplink signal sent by the STA, and because the strength of the downlink signal sent by the current AP is generally greater than the strength of the uplink signal sent by the STA, the influence caused by the strength of the downlink signal and the strength of the uplink signal is comprehensively considered, the value of the preset threshold value can be further determined, so that the occurrence of roaming failure or frequent roaming is avoided, and better internet experience is provided for a user.
In a possible implementation manner, the switching the STA to the target AP specifically includes: the STA acquires the wireless signal strength from other APs to the STA and the sending power of other APs; the STA determines the path loss from other APs to the STA based on the wireless signal strength from other APs to the STA and the transmission power of other APs; the STA determines the wireless signal strength from the STA to other APs based on the path loss from other APs to the STA and the transmission power of the STA; the STA determines a target AP in other APs based on the wireless signal strength from the other APs to the STA and the wireless signal strength from the STA to the other APs; the STA switches from the current AP to the target AP.
In one possible implementation, the method further includes: the STA acquires channels of other APs, wifi protocols of other APs, security types of other APs and noise bases of the channels of other APs; the STA, based on the wireless signal strength from the other AP to the STA and the wireless signal strength from the STA to the other AP, specifically determining, by the STA, the target AP in the other AP includes: the STA determines the target AP in the other APs based on the wireless signal strength from the other APs to the STA, the wireless signal strength from the STA to the other APs, the channels of the other APs, the wifi protocol of the other APs, the security types of the other APs and the noise bases of the channels of the other APs.
In a possible implementation manner, the path loss from the current AP to the STA is a difference between the transmission power of the current AP and the wireless signal strength from the current AP to the STA; the wireless signal strength from the STA to the current AP is the difference value between the transmission power of the STA and the path loss from the current AP to the STA; the path loss from other APs to the STA is the difference between the transmission power of other APs and the wireless signal strength from other APs to the STA; the wireless signal strength from the STA to other APs is the difference between the transmission power of the STA and the path loss from other APs to the STA.
A second aspect of an embodiment of the present application provides an STA, including: the acquisition module is used for acquiring the wireless signal strength from the current access point AP to the STA and the transmission power of the current AP; the first determining module is used for determining the path loss from the current AP to the STA according to the wireless signal strength from the current AP to the STA and the transmitting power of the current AP; a second determining module, configured to determine, based on a path loss from a current AP to an STA and a transmission power of the STA, a wireless signal strength from the STA to the current AP; and the switching module is used for switching to the target AP if the wireless signal strength from the STA to the current AP is determined to be less than a preset threshold value.
As can be seen from the above STA: after the STA acquires the wireless signal strength from the current AP to the STA (i.e., the strength of the downlink signal sent by the current AP), the STA can estimate the wireless signal strength from the STA to the current AP (i.e., the strength of the uplink signal sent by the STA) according to the strength of the downlink signal, so as to determine whether wifi roaming is triggered based on the strength of the uplink signal. Therefore, the embodiment of the application provides a new wifi roaming mechanism, in the mechanism, the STA judges whether wifi roaming is triggered or not through the strength of the uplink signal sent by the STA, and because the strength of the downlink signal sent by the current AP is generally greater than the strength of the uplink signal sent by the STA, the influence caused by the strength of the downlink signal and the strength of the uplink signal is comprehensively considered, the value of the preset threshold value can be further determined, so that the occurrence of roaming failure or frequent roaming is avoided, and better internet experience is provided for a user.
In a possible implementation manner, the switching module is specifically configured to: if the wireless signal strength from the STA to the current AP is determined to be smaller than a preset threshold value, acquiring the wireless signal strength from other APs to the STA and the transmitting power of other APs; determining path loss from other APs to the STA based on the wireless signal strength from the other APs to the STA and the transmission power of the other APs; determining the wireless signal strength from the STA to other APs based on the path loss from other APs to the STA and the sending power of the STA; determining a target AP in other APs based on the wireless signal strength from other APs to the STA and the wireless signal strength from the STA to other APs; and switching from the current AP to the target AP.
In a possible implementation manner, the switching module is further configured to acquire channels of other APs, wifi protocols of other APs, security types of other APs, and noise floors of the channels of other APs; the switching module is specifically configured to determine the target AP among the other APs based on the wireless signal strength from the other AP to the STA, the wireless signal strength from the STA to the other AP, the channels of the other APs, the wifi protocol of the other APs, the security type of the other APs, and the noise floor of the channels of the other APs.
In a possible implementation manner, the path loss from the current AP to the STA is a difference between the transmission power of the current AP and the wireless signal strength from the current AP to the STA; the wireless signal strength from the STA to the current AP is the difference value between the transmission power of the STA and the path loss from the current AP to the STA; the path loss from other APs to the STA is the difference between the transmission power of other APs and the wireless signal strength from other APs to the STA; the wireless signal strength from the STA to other APs is the difference between the transmission power of the STA and the path loss from other APs to the STA.
A third aspect of an embodiment of the present application provides a communication apparatus, including: a processor and a memory; the memory is used for storing computer execution instructions; the processor is configured to execute computer-executable instructions stored by the memory to cause the communication device to implement the method according to the first aspect or any one of the possible implementations of the first aspect.
A fourth aspect of embodiments of the present application provides a computer storage medium, characterized by comprising computer readable instructions that, when executed, implement a method according to the first aspect or any one of the possible implementation manners of the first aspect.
A fifth aspect of embodiments of the present application provides a computer program product containing instructions that, when executed on a computer, cause the computer to perform the method according to the first aspect or any one of the possible implementations of the first aspect.
The embodiment of the application provides a new wifi roaming mechanism, in this mechanism, the STA judges whether wifi roaming is triggered through the intensity of the uplink signal sent by itself, because the intensity of the downlink signal sent by the current AP is generally greater than the intensity of the uplink signal sent by the STA, the impact caused by the intensity of the downlink signal and the intensity of the uplink signal is comprehensively considered, the value of the preset threshold value can be further determined, thereby avoiding the occurrence of roaming failure or frequent roaming, and providing better internet experience for the user.
Drawings
Fig. 1 is a schematic flowchart of a method for switching an access point according to an embodiment of the present application;
fig. 2 is a schematic view illustrating an application of the method for switching an access point according to the embodiment of the present application;
fig. 3 is a schematic structural diagram of an STA according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application.
Detailed Description
The embodiment of the application provides a method for switching access points and related equipment thereof, which can provide better internet experience for users.
The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Moreover, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules not expressly listed or inherent to such process, method, article, or apparatus. The naming or numbering of the steps appearing in the present application does not mean that the steps in the method flow must be executed in the chronological/logical order indicated by the naming or numbering, and the named or numbered flow steps may be changed in execution order according to the technical purpose to be achieved, as long as the same or similar technical effects are achieved. The division of the modules presented in this application is a logical division, and in practical applications, there may be another division, for example, multiple modules may be combined or integrated into another system, or some features may be omitted, or not executed, and in addition, the shown or discussed coupling or direct coupling or communication connection between each other may be through some ports, and the indirect coupling or communication connection between the modules may be in an electrical or other similar form, which is not limited in this application. The modules or sub-modules described as separate components may or may not be physically separated, may or may not be physical modules, or may be distributed in a plurality of circuit modules, and some or all of the modules may be selected according to actual needs to achieve the purpose of the present disclosure.
Fig. 1 is a schematic flowchart of a method for switching an access point according to an embodiment of the present application, as shown in fig. 1, the method includes:
101. the STA acquires the wireless signal strength from the current AP to the STA and the transmission power of the current AP.
In this embodiment, the STA may receive, in real time, a wireless signal sent by a current AP (i.e., an AP to which the STA is currently connected), where the wireless signal may be a beacon frame or a probe response frame, and the like. Generally, the wireless signal transmitted by the current AP includes the transmission power of the current AP. Therefore, after receiving the wireless signal from the current AP, the STA may analyze the wireless signal to obtain the transmission power of the current AP, and measure the signal strength of the wireless signal to obtain the wireless signal strength from the current AP to the STA (that is, the strength of the downlink signal transmitted by the current AP).
It should be noted that the AP in this embodiment includes, but is not limited to, a WiFi router, a smart phone, a tablet computer, a large screen, a smart speaker, and other devices that support a WiFi function and that can be configured in an AP mode.
102. The STA determines the path loss from the current AP to the STA based on the wireless signal strength from the current AP to the STA and the transmission power of the current AP.
After the STA obtains the wireless signal strength from the current AP to the STA and the transmission power of the current AP, the STA may calculate a path loss from the current AP to the STA based on the wireless signal strength from the current AP to the STA and the transmission power of the current AP, where the path loss from the current AP to the STA is a difference between the transmission power of the current AP and the wireless signal strength from the current AP to the STA.
103. The STA determines the wireless signal strength from the STA to the current AP based on the path loss from the current AP to the STA and the transmission power of the STA.
After obtaining the path loss from the current AP to the STA, the STA can obtain the own transmission power. Then, the STA calculates (estimates) the wireless signal strength from the STA to the current AP (i.e., the strength of the uplink signal transmitted by the STA to the current AP) based on the path loss from the current AP to the STA and the transmission power of the STA, where the wireless signal strength from the STA to the current AP is the difference between the transmission power of the STA and the path loss from the current AP to the STA.
104. If the STA determines that the wireless signal strength from the STA to the current AP is smaller than a preset threshold value, the STA acquires the wireless signal strength from other APs to the STA, the sending power of other APs, the channels of other APs, the wifi protocol of other APs, the security types of other APs and the noise floors of the channels of other APs.
If the STA determines that the wireless signal strength from the STA to the current AP is less than a preset threshold, the STA may determine to trigger roaming. When the STA needs to roam, the wireless signal strength from other APs to the STA, the transmission power of other APs, the channels of other APs, the wifi protocol of other APs, the security types of other APs, and the noise floor of the channels of other APs may be obtained first. It is understood that other APs generally refer to multiple APs that can cover the STA in addition to the current AP.
Specifically, the STA may also receive wireless signals from other APs in real time, which may be beacon frames or probe response frames, etc. Generally, the wireless signal includes the transmission power of other APs, channels of other APs (i.e., operating frequency points of other APs), wifi protocols of other APs (e.g., 802.11a, 802.11b, 802.11g, 802.11n, etc.), and security types of other APs (encryption method, encryption mode, etc. for data). Therefore, after receiving the wireless signal from the other AP, the STA may analyze the wireless signal to obtain the transmission power of the other AP, the channel of the other AP, the wifi protocol of the other AP, and the security type of the other AP, and measure the signal strength of the wireless signal to obtain the wireless signal strength from the other AP to the STA (i.e., the strength of the downlink signal transmitted by the other AP). In addition, the STA may also perform noise measurements on the channels of other APs to obtain noise floors for the channels of other APs.
105. The STA determines the path loss from other APs to the STA based on the wireless signal strength from other APs to the STA and the transmission power of other APs.
After the STA obtains the wireless signal strength from the other AP to the STA and the transmission power of the other AP, the STA may calculate the path loss from the other AP to the STA based on the wireless signal strength from the other AP to the STA and the transmission power of the other AP, where the path loss from the other AP to the STA is a difference between the transmission power of the other AP and the wireless signal strength from the other AP to the STA.
106. The STA determines the wireless signal strength from the STA to other APs based on the path loss from other APs to the STA and the transmission power of the STA;
after obtaining the path loss from other APs to the STA, the STA can obtain its own transmission power. Then, the STA calculates (estimates) the wireless signal strength from the STA to the other AP (i.e. the strength of the uplink signal transmitted by the STA to the other AP) based on the path loss from the other AP to the STA and the transmission power of the STA, where the wireless signal strength from the STA to the other AP is the difference between the transmission power of the STA and the path loss from the other AP to the STA.
107. The STA determines the target AP among the other APs based on the wireless signal strength from the other APs to the STA, the wireless signal strength from the STA to the other APs, the channels of the other APs, the wifi protocol of the other APs, the security types of the other APs, and the noise floor of the channels of the other APs.
After the STA obtains the wireless signal strength from the TA to the other AP, the STA may calculate the wireless signal strength from the other AP to the STA, the STA may calculate the wireless signal strength from the STA to the other AP, the channel of the other AP, the wifi protocol of the other AP, the security type of the other AP, and the noise floor of the channel of the other AP according to a preset rule (for example, weighting calculation, etc.), so as to obtain the score of the other AP. It should be noted that, in the embodiment, other APs include a plurality of APs, so in the foregoing calculation process, if a score of an AP is to be obtained, the score of the AP can be calculated through the wireless signal strength from the AP to the STA, the wireless signal strength from the STA to the AP, the channel of the AP, the wifi protocol of the AP, the security type of the AP, and the noise floor of the channel of the AP. Finally, after the score of each AP is obtained, the AP with the highest score can be selected as the target AP.
108. The STA switches from the current AP to the target AP.
After determining the target AP, the STA may disconnect from the current AP and connect to the target AP, thereby completing wifi roaming.
In this embodiment, the STA judges whether wifi roaming is triggered by the strength of the uplink signal sent by the STA, and since the strength of the downlink signal sent by the current AP is generally greater than the strength of the uplink signal sent by the STA, the value of the preset threshold value can be further determined by comprehensively considering the influence caused by the strength of the downlink signal and the strength of the uplink signal, thereby avoiding the occurrence of roaming failure or frequent roaming, and providing better internet experience for the user.
Furthermore, when the STA selects the target AP, the STA can select the optimal target AP for roaming by taking into consideration not only the strength of the downlink signal but also various factors such as the strength of the uplink signal.
In order to further understand the method for switching access points provided in the embodiments of the present application, the following will be further described with reference to fig. 2 and a specific application example. Fig. 2 is a schematic view of an application example of the method for switching an access point according to the embodiment of the present application, and as shown in fig. 2, the application example includes:
the WLAN includes AP1, AP2, AP3, and AP4, and the STA in the mobile state is currently connected to AP1 and is in the coverage area of AP2, AP3, and AP 4. The STA may calculate the signal strength from itself to the AP1 in real time, specifically, the STA obtains the signal strength from the AP1 to the STA R1 and the transmission power P1 of the AP1, and subtracts the R1 from P1 to obtain L1 (the path loss from the AP1 to the STA). Then, the STA obtains its own transmission power P5, subtracts L1 from P5 to obtain the signal strength R5 from the STA to the AP1, and if R5 is smaller than a preset threshold, roaming is triggered.
After triggering roaming, the STA may obtain the signal strength R6 from the STA to the AP2, the signal strength R7 from the STA to the AP3, and the signal strength R8 from the STA to the AP4 through calculation (the calculation processes of R6, R7, and R8 are the same as those of R5, and are not described herein again). Then, the STA may perform a weighted calculation based on the signal strengths R2 from the AP2 to the STA, R6, the channel of the AP2, the wifi protocol of the AP2, the security type of the AP2, and the noise floor of the channel of the AP2 to obtain the score of the AP 2. Similarly, the score of AP3 and the score of AP4 may also be obtained (the calculation process of the score of AP3 and the calculation process of the score of AP4 are the same as the calculation process of the score of AP2, and are not described herein), and then the STA compares the score of AP2, the score of AP3 and the score of AP4, selects the AP with the highest score as the target AP, and switches from AP1 to the target AP.
The foregoing is a detailed description of the method for switching access points provided in the embodiments of the present application, and the following describes an STA provided in the embodiments of the present application. Fig. 3 is a schematic structural diagram of an STA according to an embodiment of the present application, and as shown in fig. 2, the STA includes:
an obtaining module 301, configured to obtain wireless signal strength from an AP to an STA of a current access point and a transmission power of the current AP;
a first determining module 302, configured to determine a path loss from a current AP to an STA according to a wireless signal strength from the current AP to the STA and a transmission power of the current AP;
a second determining module 303, configured to determine a wireless signal strength from the STA to the current AP based on a path loss from the current AP to the STA and a transmission power of the STA;
a switching module 304, configured to switch to the target AP if it is determined that the wireless signal strength from the STA to the current AP is smaller than a preset threshold.
In a possible implementation manner, the switching module 304 is specifically configured to: if the wireless signal strength from the STA to the current AP is determined to be smaller than a preset threshold value, acquiring the wireless signal strength from other APs to the STA and the transmitting power of other APs; determining path loss from other APs to the STA based on the wireless signal strength from the other APs to the STA and the transmission power of the other APs; determining the wireless signal strength from the STA to other APs based on the path loss from other APs to the STA and the transmission power of the STA; determining a target AP in other APs based on the wireless signal strength from other APs to the STA and the wireless signal strength from the STA to other APs; and switching from the current AP to the target AP.
In one possible implementation, the switching module 304 is further configured to obtain channels of other APs, wifi protocols of other APs, security types of other APs, and noise floors of channels of other APs; the switching module is specifically configured to determine the target AP among the other APs based on the wireless signal strength from the other AP to the STA, the wireless signal strength from the STA to the other AP, the channels of the other APs, the wifi protocol of the other APs, the security type of the other APs, and the noise floor of the channels of the other APs.
In a possible implementation manner, the path loss from the current AP to the STA is a difference between the transmission power of the current AP and the wireless signal strength from the current AP to the STA; the wireless signal strength from the STA to the current AP is the difference value between the transmission power of the STA and the path loss from the current AP to the STA; the path loss from other APs to the STA is the difference between the transmission power of other APs and the wireless signal strength from other APs to the STA; the wireless signal strength from the STA to other APs is the difference between the transmission power of the STA and the path loss from other APs to the STA.
It should be noted that, because the contents of information interaction, execution process, and the like between the modules/units of the apparatus are based on the same concept as the method embodiment of the present application, the technical effect brought by the contents is the same as the method embodiment of the present application, and specific contents may refer to the description in the foregoing method embodiment of the present application, and are not repeated herein.
Fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application. As shown in fig. 4, one embodiment of a communication apparatus in the present application may include one or more central processing units 401, a memory 402, an input/output interface 403, a wired or wireless network interface 404, and a power supply 405.
Memory 402 may be transient or persistent storage. Still further, the central processor 401 may be configured to communicate with the memory 402, executing a series of instruction operations in the memory 402 on the communication device.
In this embodiment, the central processing unit 401 may perform the operations performed by the STA in the embodiment shown in fig. 1, which are not described herein again.
In this embodiment, the specific functional module division in the central processing unit 401 may be similar to the division manner of the modules described in fig. 3, such as the obtaining module, the first determining module, the second determining module, and the switching module, and is not described herein again.
Embodiments of the present application also relate to a computer storage medium including computer readable instructions that, when executed, implement the method steps performed by the STA of fig. 1.
Embodiments of the present application also relate to a computer program product containing instructions that, when executed on a computer, cause the computer to perform the method steps as performed by the STA in fig. 1.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Claims (10)

1. A method of switching access points, the method comprising:
a station STA acquires the wireless signal intensity from a current access point AP to the STA and the transmission power of the current AP;
the STA determines the path loss from the current AP to the STA based on the wireless signal strength from the current AP to the STA and the transmission power of the current AP;
the STA determines the wireless signal strength from the STA to the current AP based on the path loss from the current AP to the STA and the transmission power of the STA;
and if the STA determines that the wireless signal intensity from the STA to the current AP is less than a preset threshold value, switching to a target AP.
2. The method of claim 1, wherein the STA switching to the target AP specifically comprises:
the STA acquires the wireless signal strength from other APs to the STA and the transmitting power of the other APs;
the STA determines the path loss from the other AP to the STA based on the wireless signal strength from the other AP to the STA and the transmission power of the other AP;
the STA determines the wireless signal strength from the STA to the other AP based on the path loss from the other AP to the STA and the transmission power of the STA;
the STA determines a target AP in the other APs based on the wireless signal strength from the other APs to the STA and the wireless signal strength from the STA to the other APs;
the STA switches from a current AP to the target AP.
3. The method of claim 2, further comprising:
the STA acquires the channels of the other APs, the wifi protocols of the other APs, the security types of the other APs and the noise bases of the channels of the other APs;
the determining, by the STA, a target AP among the other APs based on the wireless signal strengths from the other APs to the STA and the wireless signal strengths from the STA to the other APs specifically includes:
the STA determines a target AP in the other APs based on the wireless signal strength from the other APs to the STA, the wireless signal strength from the STA to the other APs, the channels of the other APs, the wifi protocol of the other APs, the security types of the other APs and the noise floor of the channels of the other APs.
4. The method of claim 3, wherein the path loss from the current AP to the STA is a difference between a transmission power of the current AP and a wireless signal strength from the current AP to the STA;
the wireless signal strength from the STA to the current AP is the difference value between the sending power of the STA and the path loss from the current AP to the STA;
the path loss from the other AP to the STA is the difference value between the sending power of the other AP and the wireless signal strength from the other AP to the STA;
the wireless signal strength from the STA to the other AP is the difference between the transmission power of the STA and the path loss from the other AP to the STA.
5. A STA, the STA comprising:
an obtaining module, configured to obtain a wireless signal strength from a current access point AP to the STA and a transmission power of the current AP;
a first determining module, configured to determine a path loss from the current AP to the STA according to the wireless signal strength from the current AP to the STA and the transmission power of the current AP;
a second determining module, configured to determine a wireless signal strength from the STA to the current AP based on a path loss from the current AP to the STA and a transmit power of the STA;
and the switching module is used for switching to the target AP if the wireless signal strength from the STA to the current AP is determined to be less than a preset threshold value.
6. The STA of claim 5, wherein the switching module is specifically configured to:
if the wireless signal strength from the STA to the current AP is determined to be smaller than a preset threshold value, acquiring the wireless signal strength from other APs to the STA and the sending power of the other APs;
determining path loss from the other AP to the STA based on the wireless signal strength from the other AP to the STA and the transmission power of the other AP;
determining the wireless signal strength of the STA to the other AP based on the path loss from the other AP to the STA and the transmission power of the STA;
determining a target AP in the other APs based on the wireless signal strength from the other APs to the STA and the wireless signal strength from the STA to the other APs;
switching from a current AP to the target AP.
7. The STA of claim 6, wherein the switching module is further configured to obtain the channels of the other APs, the wifi protocol of the other APs, the security types of the other APs, and the noise floor of the channels of the other APs;
the switching module is specifically configured to determine a target AP among the other APs based on the wireless signal strength from the other APs to the STA, the wireless signal strength from the STA to the other APs, the channels of the other APs, the wifi protocol of the other APs, the security types of the other APs, and the noise floor of the channels of the other APs.
8. The STA of claim 7, wherein the path loss from the current AP to the STA is a difference between a transmission power of the current AP and a wireless signal strength from the current AP to the STA;
the wireless signal strength from the STA to the current AP is the difference value between the sending power of the STA and the path loss from the current AP to the STA;
the path loss from the other AP to the STA is the difference between the sending power of the other AP and the wireless signal strength from the other AP to the STA;
the wireless signal strength from the STA to the other AP is the difference between the transmission power of the STA and the path loss from the other AP to the STA.
9. A communication apparatus, characterized in that the communication apparatus comprises: a processor and a memory;
the memory is used for storing computer execution instructions;
the processor is configured to execute computer-executable instructions stored by the memory to cause the communication device to implement the method of any of claims 1 to 4.
10. A computer storage medium comprising computer readable instructions which, when executed, implement the method of any of claims 1 to 4.
CN202011279361.6A 2020-11-16 2020-11-16 Method for switching access point and related equipment thereof Pending CN114513820A (en)

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