CN116033532B

CN116033532B - Wake-up method and device for wireless station, electronic equipment and storage medium

Info

Publication number: CN116033532B
Application number: CN202310171110.3A
Authority: CN
Inventors: 傅天煌
Original assignee: Gaotuoxunda Beijing Microelectronics Co ltd
Current assignee: Gaotuoxunda Beijing Microelectronics Co ltd
Priority date: 2023-02-27
Filing date: 2023-02-27
Publication date: 2023-06-30
Anticipated expiration: 2043-02-27
Also published as: CN116033532A

Abstract

The disclosure provides a wireless station awakening method, a wireless station awakening device, electronic equipment and a storage medium, wherein a beacon transmission period corresponding to a wireless Access Point (AP) is acquired; recording the historical AP time of the AP sending the historical beacon and the historical STA time of the wireless station STA receiving the corresponding historical beacon; determining clock deviation between the AP and the STA and historical transmission time delay of each historical beacon, and determining a predicted first transmission time delay corresponding to the target beacon according to the plurality of historical transmission time delays; according to the predicted first transmission delay and the beacon transmission period, determining the predicted AP time of the AP for transmitting the target beacon; and determining the predicted STA time of the predicted AP time in the STA clock domain according to the clock deviation, and waking up the STA according to the predicted STA time. Under the condition that the STA and the AP are kept connected, the sleep time of the STA is prolonged, the power consumption of the STA is reduced, and the endurance time of the STA is prolonged.

Description

Wake-up method and device for wireless station, electronic equipment and storage medium

Technical Field

The disclosure relates to the technical field of communication, and in particular relates to a wireless station wake-up method, a wireless station wake-up device, electronic equipment and a storage medium.

Background

At present, with the continuous popularization of wireless networks, products with low power consumption and communication are put into daily life of people, such as low power consumption cameras, doorbell, electronic lock and the like. The core change of the product is that the original wired network connection is replaced by Wi-Fi network connection, and the normal power supply is changed into battery power supply, so that the problems of wired network wiring and normal power supply wiring are thoroughly solved. However, battery powered applications require a long duration, which requires that such products be as low as possible in power consumption and as dormant as possible when not in operation. In addition, the characteristics of such products generally require immediate response: i.e. when work is required, the work can be quickly resumed. For example, for a low-power consumption camera, when a sensor detects that a person passes, the sensor can wake up immediately and record a video, and then the video is transmitted to a router through Wi-Fi to a cloud disk, if the camera is started and connected with the Wi-Fi device for too long, the video can be missed, so that the camera is required to keep being connected with a wireless Access Point (AP) device when the camera is dormant, otherwise, the camera cannot respond immediately.

Under the existing Wi-Fi protocol (802.11 protocol), an AP will periodically broadcast a Beacon packet (Beacon packet), after a wireless Station (STA) connects to the AP, if there is no data interaction with the AP, the AP negotiates to enter a sleep state, and then the STA wakes up synchronously with one or several Beacon packet periods at intervals, and receives Beacon packet frames. However, the clock of the Beacon packet sent by the AP is jittered, and in some Beacon packets, the clock 1s can be shifted by 20-50 ms, so that in order to be compatible with all APs, the current wake-up mode can wake up the STA to receive the Beacon packet only according to the worst AP clock shift condition, thus the sleep time of the STA is less, the power consumption is increased, and the endurance time of the product is further reduced.

Disclosure of Invention

The embodiment of the disclosure provides at least a wireless station wake-up method, device, electronic equipment and storage medium, which can prolong the sleep time of an STA (station) under the condition that the STA and an AP are kept connected, further reduce the power consumption of the STA and improve the endurance time of the STA.

The embodiment of the disclosure provides a wake-up method of a wireless station, which comprises the following steps:

acquiring a preset beacon transmission period corresponding to a wireless Access Point (AP);

recording the historical AP time of the wireless access point AP for transmitting the historical beacon and the historical STA time of the wireless station STA for receiving the corresponding historical beacon;

determining clock deviation between the wireless access point AP and the wireless station STA according to the historical AP time and the historical STA time;

according to the beacon transmission period and the historical AP time, determining the historical transmission time delay of each historical beacon, and according to a plurality of historical transmission time delays, determining the predicted first transmission time delay corresponding to the target beacon;

determining the predicted AP time of the wireless access point AP for transmitting the target beacon according to the predicted first transmission time delay and the beacon transmission period;

and determining the predicted STA time of the predicted AP time in an STA clock domain according to the clock deviation, and waking up the wireless station STA according to the predicted STA time.

In an alternative embodiment, after determining, according to the clock bias, a predicted STA time of the predicted AP time in a STA clock domain, and waking up the wireless station STA according to the predicted STA time, the method further includes:

according to the historical transmission delays, determining a predicted second transmission delay for the wireless Access Point (AP) to transmit the target beacon;

determining a predicted waiting time length required by the wireless station STA to receive the target beacon in an AP clock domain according to the predicted first transmission time delay and the predicted second transmission time delay;

converting the predicted waiting time length into the STA clock domain according to the clock deviation;

determining whether the wireless station STA receives the target beacon within the converted predicted waiting time period;

and if not, controlling the wireless station STA to enter a dormant state.

In an alternative embodiment, when the number of times the wireless station STA does not receive the target beacon is greater than a preset number of times threshold, after the determining that the wireless access point AP transmits the predicted second transmission delay of the target beacon, the method further includes:

Determining a preset product correction coefficient corresponding to the predicted second transmission delay and a preset addition and correction coefficient;

and correcting the predicted second transmission delay according to the product correction coefficient and the addition correction coefficient.

In an optional embodiment, the clock bias includes a clock frequency bias and a clock relative value bias, and the determining the clock bias between the wireless access point AP and the wireless station STA according to the historical AP time and the historical STA time specifically includes:

constructing an objective function with the historical STA time as an independent variable and the historical AP time as a dependent variable by taking the clock frequency deviation as a slope and the clock relative value deviation as an intercept;

and solving the objective function by adopting a fitting algorithm according to the historical AP time and the historical STA time, and determining the clock frequency deviation and the clock relative value deviation.

In an alternative embodiment, the predicted first transmission delay corresponding to the target beacon is determined based on the steps of:

before the target beacons are acquired, the historical transmission time delays corresponding to the historical beacons with the number of the preset first number threshold values are set;

And determining the minimum value in the historical transmission time delay as the predicted first transmission time delay.

In an alternative embodiment, the step of determining the predicted second transmission delay specifically includes:

before the target beacons are acquired, the historical transmission delays corresponding to the historical beacons with the number of the preset second number threshold values are obtained;

and determining the maximum value of the historical transmission delays as the predicted second transmission delay.

In an alternative embodiment, the step of determining the predicted second transmission delay further specifically includes:

before the target beacons are acquired, the historical transmission time delays corresponding to the historical beacons with the number of the preset third number threshold values are set;

determining a median corresponding to the historical transmission time delay;

and determining the sum of the median and a preset transmission delay correction value as the predicted second transmission delay.

The embodiment of the disclosure also provides a wake-up device of the wireless station, which comprises:

the acquisition module is used for acquiring a preset beacon transmission period corresponding to the wireless access point AP;

the recording module is used for recording the historical AP time of the wireless access point AP for transmitting the historical beacon and the historical STA time of the wireless station STA for receiving the corresponding historical beacon;

The clock deviation determining module is used for determining clock deviation between the AP and the STA according to the historical AP time and the historical STA time;

the delay prediction module is used for determining the historical transmission delay of each historical beacon according to the beacon transmission period and the historical AP time, and determining the predicted first transmission delay corresponding to the target beacon according to a plurality of historical transmission delays;

a sending time prediction module, configured to determine, according to the predicted first sending time delay and the beacon sending period, a predicted AP time for the wireless access point AP to send the target beacon;

and the awakening module is used for determining the predicted STA time of the predicted AP time in the STA clock domain according to the clock deviation, and awakening the wireless station STA according to the predicted STA time.

In an alternative embodiment, the apparatus further includes a waiting duration determining module, where the waiting duration determining module is configured to:

and if not, controlling the wireless station STA to enter a dormant state.

In an optional implementation manner, when the number of times that the wireless station STA does not receive the target beacon is greater than a preset number of times threshold, the apparatus further includes a waiting duration correction module, where the waiting duration correction module is configured to:

In an alternative embodiment, the clock bias includes a clock frequency bias and a clock relative value bias, and the clock bias determining module is specifically configured to:

In an alternative embodiment, the delay prediction module is specifically configured to:

In an alternative embodiment, the waiting duration determining module is specifically configured to:

In an alternative embodiment, the waiting duration determining module is specifically further configured to:

determining a median corresponding to the historical transmission time delay;

The embodiment of the disclosure also provides an electronic device, including: a processor, a memory and a bus, the memory storing machine readable instructions executable by the processor, the processor and the memory communicating over the bus when the electronic device is running, the machine readable instructions when executed by the processor performing the steps of the method of waking up a wireless station described above, or of any one of the possible embodiments of the method of waking up a wireless station described above.

The disclosed embodiments also provide a computer readable storage medium having a computer program stored thereon, which when executed by a processor performs the steps of the above-described wireless station wake-up method, or any of the possible implementation manners of the above-described wireless station wake-up method.

The embodiment of the disclosure provides a wireless station wake-up method, a wireless station wake-up device, electronic equipment and a storage medium, wherein a beacon transmission period corresponding to a wireless Access Point (AP) is acquired; recording historical AP time of the AP sending the historical beacon and historical STA time of the wireless station STA receiving the corresponding historical beacon; determining clock deviation between the AP and the STA according to the historical AP time and the historical STA time; according to the beacon transmission period and the historical AP time, determining the historical transmission time delay of each historical beacon, and according to a plurality of historical transmission time delays, determining the predicted first transmission time delay corresponding to the target beacon; determining the predicted AP time of the AP for transmitting the target beacon according to the predicted first transmission time delay and the beacon transmission period; and determining the predicted STA time of the predicted AP time in an STA clock domain according to the clock deviation, and waking up the STA according to the predicted STA time. Under the condition that the STA and the AP are kept connected, the sleep time of the STA is prolonged, the power consumption of the STA is reduced, and the endurance time of the STA is prolonged.

The foregoing objects, features and advantages of the disclosure will be more readily apparent from the following detailed description of the preferred embodiments taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the embodiments are briefly described below, which are incorporated in and constitute a part of the specification, these drawings showing embodiments consistent with the present disclosure and together with the description serve to illustrate the technical solutions of the present disclosure. It is to be understood that the following drawings illustrate only certain embodiments of the present disclosure and are therefore not to be considered limiting of its scope, for the person of ordinary skill in the art may admit to other equally relevant drawings without inventive effort.

Fig. 1 is a flowchart of a wake-up method of a wireless station according to an embodiment of the present disclosure;

fig. 2 is a flowchart illustrating another wireless station wake-up method provided by an embodiment of the present disclosure;

fig. 3 is a schematic diagram of a wake-up device of a wireless station according to an embodiment of the disclosure;

fig. 4 shows a schematic diagram of an electronic device provided by an embodiment of the disclosure.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, but not all embodiments. The components of the embodiments of the present disclosure, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the disclosure, as claimed, but is merely representative of selected embodiments of the disclosure. All other embodiments, which can be made by those skilled in the art based on the embodiments of this disclosure without making any inventive effort, are intended to be within the scope of this disclosure.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

The term "and/or" is used herein to describe only one relationship, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist together, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C.

It is found that under the existing Wi-Fi protocol (802.11 protocol), an AP periodically broadcasts a Beacon packet (Beacon packet), after a wireless Station (STA) connects to the AP, if there is no data interaction with the AP, the AP negotiates to enter a sleep state, and then the STA wakes up synchronously with one or several Beacon packet periods at intervals, and receives a Beacon packet frame. However, the clock of the Beacon packet sent by the AP is jittered, and in some Beacon packets, the clock 1s can be shifted by 20-50 ms, so that in order to be compatible with all APs, the current wake-up mode can wake up the STA to receive the Beacon packet only according to the worst AP clock shift condition, thus the sleep time of the STA is less, the power consumption is increased, and the endurance time of the product is further reduced.

Based on the above researches, the disclosure provides a wireless station wake-up method, a device, an electronic device and a storage medium, by acquiring a beacon transmission period corresponding to a wireless access point AP; recording historical AP time of the AP sending the historical beacon and historical STA time of the wireless station STA receiving the corresponding historical beacon; determining clock deviation between the AP and the STA according to the historical AP time and the historical STA time; according to the beacon transmission period and the historical AP time, determining the historical transmission time delay of each historical beacon, and according to a plurality of historical transmission time delays, determining the predicted first transmission time delay corresponding to the target beacon; determining the predicted AP time of the AP for transmitting the target beacon according to the predicted first transmission time delay and the beacon transmission period; and determining the predicted STA time of the predicted AP time in an STA clock domain according to the clock deviation, and waking up the STA according to the predicted STA time. Under the condition that the STA and the AP are kept connected, the sleep time of the STA is prolonged, the power consumption of the STA is reduced, and the endurance time of the STA is prolonged.

For the sake of understanding the present embodiment, first, a detailed description will be given of a wireless station wake-up method disclosed in the present embodiment, where an execution body of the wireless station wake-up method provided in the present embodiment is generally a computer device with a certain computing capability, where the computer device includes, for example: the terminal device, or server or other processing device, may be a User Equipment (UE), mobile device, user terminal, cellular telephone, cordless telephone, personal digital assistant (Personal Digital Assistant, PDA), handheld device, computing device, vehicle mounted device, wearable device, etc. In some possible implementations, the wake-up method of the wireless station may be implemented by a processor invoking computer readable instructions stored in a memory.

Referring to fig. 1, a flowchart of a wireless station wake-up method according to an embodiment of the present disclosure is shown, where the method includes steps S101 to S106, where:

s101, acquiring a preset beacon transmission period corresponding to a wireless Access Point (AP).

In a specific implementation, a Beacon transmission period of a preset periodic broadcast Beacon packet (Beacon packet) in the wireless access point AP is first acquired, where the Beacon transmission period is a time point when the AP transmits a Beacon that keeps in contact with the wireless station STA when a channel is idle, i.e., when a current wireless transmission channel has no interference, for example, the Beacon transmission period may be 102.4ms, i.e., the AP needs to transmit the Beacon to the STA at time points of 0ms, 102.4ms, 204.8ms, …, and 1024 ms.

In the practical application process, when the beacon transmission period of the AP device is reached and the beacon needs to be transmitted to the STA, if the channel of the AP device is busy at this time or the current channel has interference, the beacon will be transmitted again when the channel is idle after the time point of the beacon transmission period.

Here, the wireless access point AP is a master device in a Wi-Fi connection, such as a router or the like.

The beacon transmission period may be recorded in a Time Stamp field in the beacon packet, where a transmission Time of the AP transmitting the beacon and a preset beacon transmission period are recorded.

S102, recording historical AP time of the AP for transmitting the historical beacon and historical STA time of the wireless station STA for receiving the historical beacon.

In a specific implementation, during a period of time before the wake-up time prediction is performed, a time point at which the AP transmits a history beacon during the period of time is recorded: historical AP time, and the point in time when the wireless station STA receives the corresponding historical beacon: historical STA times.

The historical AP time is a time point counted in the clock domain of the AP, and the historical STA time is a time point counted in the clock domain of the STA.

Here, it is necessary to provide a timer function in the STA, and the timer function may be implemented by hardware or software, and may be selected according to actual needs in the implementation, and is not particularly limited herein.

S103, determining clock deviation between the AP and the STA according to the historical AP time and the historical STA time.

In a specific implementation, a clock offset between the AP clock and the STA clock is calculated according to the plurality of historical AP times and the plurality of historical STA times acquired in step S102. The clock bias between the AP and the STA may specifically include a clock frequency bias and a clock relative value bias.

As a possible implementation manner, it may be considered that the linear function relationship with unknown slope is satisfied between the historical AP time and the historical STA time, and thus, determining the clock bias between the AP clock and the STA clock may be performed by the following steps S1031-S1032:

s1031, constructing an objective function with the historical STA time as an independent variable and the historical AP time as the dependent variable by taking the clock frequency deviation as a slope and the clock relative value deviation as an intercept.

In a specific implementation, the objective function may be expressed in the form:

wherein T represents AP time; s represents STA time; k represents clock frequency deviation; b represents the clock relative value deviation.

Here, since the objective function is in the form of a one-time function, only two sets of historical AP time and historical STA time are needed in normal condition, the clock frequency deviation k and the clock relative value deviation b can be calculated, but in consideration of jitter and measurement errors that may occur in the clock, it is preferable to calculate the clock frequency deviation k and the clock relative value deviation b by using a plurality of historical AP time and a plurality of historical STA time in the present embodiment, so as to reduce estimation and measurement errors, and correspondingly, the expression form of the objective function is changed to:

wherein,,

、/>

…/>

represents the 1 st-n historical STA time; />

、/>

…/>

Represents the 1 st-n th historical AP time; k represents clock frequency deviation; b represents the clock relative value deviation. Selected historical STA time and calendarThe number n of history AP times may be set according to actual needs, and is not particularly limited herein.

S1032, according to the historical AP time and the historical STA time, solving the objective function by adopting a fitting algorithm, and determining the clock frequency deviation and the clock relative value deviation.

In a specific implementation, the method for solving the objective function by adopting a fitting algorithm may include: and estimating methods such as a least square method based on minimum mean square error and a least square method based on minimum absolute value error.

Here, the clock frequency deviation k and the clock relative value deviation b calculated using the least square method can be expressed as:

wherein,,

represents the i-th historical STA time; />

Represents the i-th historical AP time; k represents clock frequency deviation; b represents clock relative value deviation; n represents the number of selected historical STA times and historical AP times, and may be set according to actual needs, which is not particularly limited herein.

Further, when jitter and measurement errors that may occur in the clock are not considered, the number of the selected historical AP times and the number of the historical STA times may be 2, i.e., n=2, and the expression of the clock frequency deviation k and the clock relative value deviation b may be simplified as follows:

wherein,,

representing the selected 1 st historical STA time; />

Representing the selected 2 nd historical STA time; />

Represents the 1 st selected historical AP time; />

Representing the selected 2 nd historical AP time; k represents clock frequency deviation; b represents the clock relative value deviation.

S104, according to the beacon transmission period and the historical AP time, determining the historical transmission time delay of each historical beacon, and according to a plurality of historical transmission time delays, determining the predicted first transmission time delay corresponding to the target beacon.

In a specific implementation, if the AP is in a channel idle state, the AP transmits a beacon according to a time point corresponding to a beacon transmission period, but in a situation that an AP channel has interference or the like in an actual situation, the AP may just be in a situation that the channel is busy or has interference or the like at the time point corresponding to the beacon transmission period, and the AP needs to transmit a beacon with a corresponding backoff when waiting for the channel to be idle or without interference.

Here, the historical transmission delay may be determined by an absolute value of a difference between the historical AP time and a point of time of a corresponding beacon transmission period, and alternatively, the historical transmission delay may be expressed as follows:

Wherein,,

represents the mth historical transmission delay; />

Represents the mth historical AP time; />

Representing a beacon transmission period; />

Representing modulo computation.

For example, when the beacon transmission period is 102.4ms, the AP should theoretically transmit the beacon to the STA at the time points of 0ms, 102.4ms, 204.8ms, …, 1024ms when the channel is idle, but the historical AP time for the corresponding AP to actually transmit the beacon is 0ms, 107.4ms, 214.8ms, …, 1074ms, so that the corresponding historical transmission delays can be determined as follows: 0ms, 5ms, 10ms, …, 50ms.

Further, after the plurality of historical transmission delays are calculated, since the actual transmission time of each beacon is certainly not earlier than the transmission time when the channel is completely idle, the minimum value of the plurality of historical transmission delays can be used as the predicted first transmission delay for predicting the AP to transmit the target beacon.

The predicted first transmission delay is a predicted delay between a time point of transmitting the target beacon by the AP and a corresponding beacon transmission period when the STA subsequently receives the target beacon transmitted by the AP after the current time.

Here, the predicted first transmission delay may be calculated by the following formula:

wherein,,

representing a predicted first transmission delay; / >

Representing historical transmission delay; />

Representing the operation of taking the minimum value.

It should be noted that, in an extreme case, the duration of the channel busy of the AP may be longer, if the channel busy is before one beacon transmission period occurs, and the channel idle occurs immediately after the next beacon transmission period begins, so the predicted first transmission delay may be smaller according to the above formula, as a possible implementation, the predicted first transmission delay may be calculated by the following steps S1041 to S1042:

s1041, before the target beacons are acquired, the number of the historical transmission delays corresponding to the historical beacons with the preset first number threshold value.

S1042, determining the minimum value in the historical transmission time delay as the predicted first transmission time delay.

In a specific implementation, a parameter is set: the first number threshold, when predicting the transmission time of the mth target beacon transmitted by the AP, is estimated by the historical transmission delay corresponding to the historical beacons received by the STA before the mth target beacon, the number of which is the first number threshold.

It should be noted that the first number threshold may be set according to actual needs, and is not particularly limited herein.

Illustratively, for example, setting the first number threshold to 100, the predicted STA receives the 101 st target beacon with the 1 st to 100 th historical beacon before the predicted first transmission delay, and the predicted STA receives the 102 st target beacon with the 2 nd to 101 st historical beacon before the predicted first transmission delay.

Here, in this embodiment, the predicted first transmission delay may be calculated by the following formula:

wherein,,

representing a predicted first transmission delay corresponding to an mth target beacon; l represents a first quantity threshold; />

Representing historical transmission delay; />

Representing the operation of taking the minimum value.

S105, determining the predicted AP time of the AP for transmitting the target beacon according to the predicted first transmission time delay and the beacon transmission period.

In a specific implementation, after determining the predicted first transmission delay of the AP transmitting the target beacon to the STA, the time point of the AP transmitting the target beacon in the AP clock domain may be estimated according to the beacon transmission period and the predicted first transmission delay: the AP time is predicted.

The predicted AP time may be a sum of a time point corresponding to a beacon transmission period in which the AP transmits the target beacon and the predicted first transmission delay.

Here, the predicted AP time satisfies the following formula:

wherein,,

a predicted AP time for transmitting an mth target beacon on behalf of the AP; />

Representing a beacon transmission period; />

Representing the historical transmission delay corresponding to the mth historical beacon.

It should be noted that the equal sign in the above formula holds only when the AP channel is idle.

S106, determining the predicted STA time of the predicted AP time in the STA clock domain according to the clock deviation, and waking up the STA according to the predicted STA time.

In a specific implementation, the predicted AP time calculated in step S105 is a time point of predicting the sending target beacon in the AP clock domain, and because there is a deviation between the AP clock and the STA clock, the predicted AP time needs to be converted from the AP clock domain to the STA clock domain to obtain the predicted STA time when the predicted STA actually receives the target beacon in the STA clock domain, and wake up the STA according to the predicted STA time.

Specifically, the predicted STA time may be calculated by the following formula:

wherein,,

the representative STA receives the predicted STA time corresponding to the mth target beacon; />

Represents the i-th historical STA time; />

Represents the i-th historical AP time; k represents clock frequency deviation; b represents clock relative value deviation; n represents the number of selected historical STA times and historical AP times;

Representing a beacon transmission period; />

In this way, the STA is awakened according to the predicted STA time, and if the AP channel is idle, the AP will also transmit the target beacon just at this predicted STA time, so that the STA's sleep time is the longest and the beacon packets transmitted by the AP will not be missed.

According to the wake-up method of the wireless station, a beacon transmission period corresponding to a wireless Access Point (AP) is obtained; recording historical AP time of the AP sending the historical beacon and historical STA time of the wireless station STA receiving the corresponding historical beacon; determining clock deviation between the AP and the STA according to the historical AP time and the historical STA time; according to the beacon transmission period and the historical AP time, determining the historical transmission time delay of each historical beacon, and according to a plurality of historical transmission time delays, determining the predicted first transmission time delay corresponding to the target beacon; determining the predicted AP time of the AP for transmitting the target beacon according to the predicted first transmission time delay and the beacon transmission period; and determining the predicted STA time of the predicted AP time in an STA clock domain according to the clock deviation, and waking up the STA according to the predicted STA time. Under the condition that the STA and the AP are kept connected, the sleep time of the STA is prolonged, the power consumption of the STA is reduced, and the endurance time of the STA is prolonged.

Further, when the STA is in the awake state and turns on the receiver to receive the beacon packet sent by the AP, if the receiver is turned on all the time under the condition that the beacon packet is not received, the beacon packet is sent but is interfered by the environment to cause the STA to not receive the beacon packet, and in this case, the STA power consumption will be high; however, if the STA turns off the receiver to the sleep state too early, there is a possibility that the beacon packet transmitted by the AP will be dropped and the STA cannot be awakened in time. Therefore, prediction needs to be performed for the longest time that the STA needs to wait after powering on, and the specific process may be completed by the following steps S201 to S204, as shown in fig. 2, which is a flowchart of another wireless station wake-up method according to an embodiment of the present disclosure, where the method includes steps S201 to S204, where:

s201, according to the historical transmission delays, determining a predicted second transmission delay for the AP to transmit the target beacon.

In a specific implementation, among the plurality of historical transmission delays, the longest historical transmission delay of the historical beacon transmitted by the AP in the time period is determined, and when the historical transmission delay is used as the target beacon transmitted by the AP, due to the reasons of busy AP channel or interference, the longest delay of the corresponding time point of the transmission period of the AP is compared with the longest delay of the corresponding time point of the beacon: and predicting a second transmission delay.

As a possible implementation, the following steps may be used to determine the predicted second transmission delay: before the target beacons are acquired, the historical transmission delays corresponding to the historical beacons with the number of the preset second number threshold values are obtained; and determining the maximum value of the historical transmission delays as the predicted second transmission delay.

It should be noted that the preset second number threshold may be set to be the same as the preset first number threshold, and may be selected according to actual needs in implementation, which is not limited herein.

Here, in this embodiment, the expression for calculating the predicted second transmission delay may be:

wherein,,

representing a predicted second transmission delay corresponding to the mth target beacon; l represents a second number threshold; />

Representing historical transmission delay; />

Representing the operation of taking the maximum value.

As another possible implementation, the following steps may also be used to determine the predicted second transmission delay: before the target beacons are acquired, the historical transmission time delays corresponding to the historical beacons with the number of the preset third number threshold values are set; determining a median corresponding to the historical transmission time delay; and determining the sum of the median and a preset transmission delay correction value as the predicted second transmission delay.

It should be noted that, the preset third number threshold may be set to be the same as the preset first number threshold and the preset second number threshold, and may be selected according to actual needs in specific implementation, which is not limited herein; the preset transmission delay correction value is preferably 10ms, and may be selected according to actual needs in implementation, which is not particularly limited herein.

wherein,,

representing a predicted second transmission delay corresponding to the mth target beacon; l represents a third quantity threshold; />

Representing historical transmission delay; />

Represents a median operation;

representing a preset transmission delay correction value.

As another possible implementation, the following steps may also be used to determine the predicted second transmission delay: before the target beacons are acquired, the historical transmission time delay corresponding to the historical beacons with the number of the preset fourth number threshold is calculated; determining an average number corresponding to the historical transmission delay; and determining the sum of the average number and a preset transmission delay correction value as the predicted second transmission delay.

It should be noted that, the preset fourth number threshold may be set to be the same as the preset first number threshold, the preset second number threshold, and the preset third number threshold, and may be selected according to actual needs in the specific implementation, which is not limited herein; the preset transmission delay correction value is preferably 10ms, and may be selected according to actual needs in implementation, which is not particularly limited herein.

wherein,,

representing a predicted second transmission delay corresponding to the mth target beacon; l represents a fourth quantity threshold; />

Representative ofHistorical transmission delay; />

Representing an averaging operation;

representing a preset transmission delay correction value.

S202, determining the predicted waiting time length required by the STA to receive the target beacon in an AP clock domain according to the predicted first transmission time delay and the predicted second transmission time delay.

In a specific implementation, the predicted waiting time required for the receiver to open to receive the target beacon sent by the AP can be calculated in the AP clock domain by the following formula, where the STA keeps the awake state:

wherein,,

representing a predicted wait time period required for the STA to receive the target beacon in the AP clock domain; />

Representing a predicted second transmission delay corresponding to the mth target beacon;

representing the predicted first transmission delay corresponding to the mth target beacon.

S203, converting the predicted waiting time length into the STA clock domain according to the clock deviation.

In a specific implementation, since there is a deviation between the AP clock and the STA clock, it is also necessary to switch the predicted waiting time from the AP clock domain to the STA clock domain, and the calculation can be performed by the following formula:

Wherein,,

representing the predicted waiting time length corresponding to the mth target beacon in the STA clock domain;

represents the i-th historical STA time; />

S204, determining whether the STA receives the target beacon or not within the converted predicted waiting time; and if not, controlling the STA to enter a dormant state.

In a specific implementation, each time the STA enters the awake state to receive the target beacon, when the duration of the awake state exceeds the predicted waiting time after the transition to the STA time domain, and the target beacon is still not received, the AP is considered to have transmitted the target beacon, but the target beacon is disturbed by the environment, so that the STA is controlled to enter the sleep state to reduce power consumption.

As a possible implementation manner, when the number of times that the STA does not receive the target beacon in the predicted waiting duration is greater than the preset number of times threshold, then correction is required for predicting the second transmission delay, and the process may be completed by the following steps: determining a preset product correction coefficient corresponding to the predicted second transmission delay and a preset addition and correction coefficient; and correcting the predicted second transmission delay according to the product correction coefficient and the addition correction coefficient.

It should be noted that, the preset product correction coefficient and the preset addition correction coefficient are both positive numbers, and in specific implementation, the preset product correction coefficient may be 1 without specific limitation; the preset addition and correction coefficients may be 10ms.

Here, the correction for predicting the second transmission delay may be made by the following formula:

wherein,,

representing a predicted second transmission delay corresponding to the mth target beacon; c represents a preset product correction coefficient; d represents a preset addition and correction coefficient; />

Representing the predicted wait time period required for the STA to receive the target beacon within the AP clock domain.

It will be appreciated by those skilled in the art that in the above-described method of the specific embodiments, the written order of steps is not meant to imply a strict order of execution but rather should be construed according to the function and possibly inherent logic of the steps.

Based on the same inventive concept, the embodiment of the disclosure further provides a wireless station wake-up device corresponding to the wireless station wake-up method, and since the principle of solving the problem of the device in the embodiment of the disclosure is similar to that of the wireless station wake-up method in the embodiment of the disclosure, the implementation of the device can refer to the implementation of the method, and the repetition is omitted.

Referring to fig. 3, fig. 3 is a schematic diagram of a wake-up device of a wireless station according to an embodiment of the disclosure. As shown in fig. 3, a wake-up device 300 of a wireless station provided in an embodiment of the present disclosure includes:

the acquiring module 310 is configured to acquire a beacon transmission period corresponding to the wireless access point AP.

A recording module 320, configured to record a historical AP time when the AP transmits a historical beacon, and a historical STA time when the wireless station STA receives the historical beacon.

The clock bias determining module 330 is configured to determine a clock bias between the AP and the STA according to the historical AP time and the historical STA time.

The delay prediction module 340 is configured to determine a historical transmission delay of each historical beacon according to the beacon transmission period and the historical AP time, and determine a predicted first transmission delay corresponding to a target beacon according to a plurality of historical transmission delays.

And a transmission time prediction module 350, configured to determine, according to the predicted first transmission delay and the beacon transmission period, a predicted AP time when the AP transmits the target beacon.

And a wake-up module 360, configured to determine, according to the clock deviation, a predicted STA time of the predicted AP time in an STA clock domain, and wake up the STA according to the predicted STA time.

The process flow of each module in the apparatus and the interaction flow between the modules may be described with reference to the related descriptions in the above method embodiments, which are not described in detail herein.

The embodiment of the disclosure provides a wake-up device for a wireless station, which is used for acquiring a beacon transmission period corresponding to a wireless Access Point (AP); recording historical AP time of the AP sending the historical beacon and historical STA time of the wireless station STA receiving the corresponding historical beacon; determining clock deviation between the AP and the STA according to the historical AP time and the historical STA time; according to the beacon transmission period and the historical AP time, determining the historical transmission time delay of each historical beacon, and according to a plurality of historical transmission time delays, determining the predicted first transmission time delay corresponding to the target beacon; determining the predicted AP time of the AP for transmitting the target beacon according to the predicted first transmission time delay and the beacon transmission period; and determining the predicted STA time of the predicted AP time in an STA clock domain according to the clock deviation, and waking up the STA according to the predicted STA time. Under the condition that the STA and the AP are kept connected, the sleep time of the STA is prolonged, the power consumption of the STA is reduced, and the endurance time of the STA is prolonged.

Corresponding to the wake-up method of the wireless station in fig. 1 and fig. 2, the embodiment of the disclosure further provides an electronic device 400, as shown in fig. 4, which is a schematic structural diagram of the electronic device 400 provided in the embodiment of the disclosure, including:

a processor 41, a memory 42, and a bus 43; memory 42 is used to store execution instructions, including memory 421 and external memory 422; the memory 421 is also referred to as an internal memory, and is used for temporarily storing operation data in the processor 41 and data exchanged with the external memory 422 such as a hard disk, and the processor 41 exchanges data with the external memory 422 through the memory 421, and when the electronic device 400 is operated, the processor 41 and the memory 42 communicate with each other through the bus 43, so that the processor 41 performs the steps of the wake-up method of the wireless station in fig. 1 and 2.

The disclosed embodiments also provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the wireless station wake-up method described in the method embodiments above. Wherein the storage medium may be a volatile or nonvolatile computer readable storage medium.

The embodiment of the disclosure further provides a computer program product, which includes computer instructions, where the computer instructions, when executed by a processor, may perform the steps of the method for waking up a wireless station described in the foregoing method embodiment, and specifically, reference may be made to the foregoing method embodiment, which is not described herein.

Wherein the above-mentioned computer program product may be realized in particular by means of hardware, software or a combination thereof. In an alternative embodiment, the computer program product is embodied as a computer storage medium, and in another alternative embodiment, the computer program product is embodied as a software product, such as a software development kit (Software Development Kit, SDK), or the like.

It will be clear to those skilled in the art that, for convenience and brevity of description, reference may be made to the corresponding process in the foregoing method embodiment for the specific working process of the apparatus described above, which is not described herein again. In the several embodiments provided in the present disclosure, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.

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

In addition, each functional unit in each embodiment of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer readable storage medium executable by a processor. Based on such understanding, the technical solution of the present disclosure may be embodied in essence or a part contributing to the prior art or a part of the technical solution, or in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present disclosure. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Finally, it should be noted that: the foregoing examples are merely specific embodiments of the present disclosure, and are not intended to limit the scope of the disclosure, but the present disclosure is not limited thereto, and those skilled in the art will appreciate that while the foregoing examples are described in detail, it is not limited to the disclosure: any person skilled in the art, within the technical scope of the disclosure of the present disclosure, may modify or easily conceive changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features thereof; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the disclosure, and are intended to be included within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A method for waking up a wireless station, comprising:

determining the predicted STA time of the predicted AP time in an STA clock domain according to the clock deviation, and waking up the wireless station STA according to the predicted STA time;

specifically, the predicted STA time is calculated by the following formula:

wherein,,

Represents the i-th historical STA time; />

representing a beacon transmission period; / >

2. The method of claim 1, wherein after said determining, based on said clock bias, a predicted STA time for said predicted AP time to be within a STA clock domain, and waking up said wireless station STA based on said predicted STA time, said method further comprises:

and if not, controlling the wireless station STA to enter a dormant state.

3. The method according to claim 2, wherein when the number of times the wireless station STA does not receive the target beacon is greater than a preset number of times threshold, after the determining that the wireless access point AP transmits the predicted second transmission delay of the target beacon, the method further comprises:

4. The method according to claim 1, wherein the clock bias includes a clock frequency bias and a clock relative value bias, and the determining the clock bias between the wireless access point AP and the wireless station STA according to the historical AP time and the historical STA time specifically includes:

5. The method of claim 1, wherein the predicted first transmission delay corresponding to the target beacon is determined based on:

6. The method according to claim 2, wherein the step of determining the predicted second transmission delay comprises:

7. The method according to claim 2, wherein the step of determining the predicted second transmission delay further comprises:

determining a median corresponding to the historical transmission time delay;

8. A wake-up unit for a wireless station, comprising:

The clock deviation determining module is used for determining clock deviation between the wireless access point AP and the wireless station STA according to the historical AP time and the historical STA time;

the awakening module is used for determining the predicted STA time of the predicted AP time in an STA clock domain according to the clock deviation, and awakening the wireless station STA according to the predicted STA time;

wherein,,

Represents the i-th historical STA time; />

Representing a beacon transmission period; />

9. An electronic device, comprising: a processor, a memory and a bus, the memory storing machine readable instructions executable by the processor, the processor and the memory in communication over the bus when the electronic device is running, the machine readable instructions when executed by the processor performing the steps of the wireless station wake-up method of any of claims 1 to 7.

10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when executed by a processor, performs the steps of the wake-up method of a wireless station according to any of claims 1 to 7.