CN109348431B - Bluetooth scanning method, device, equipment and storage medium - Google Patents

Bluetooth scanning method, device, equipment and storage medium Download PDF

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Publication number
CN109348431B
CN109348431B CN201811355738.4A CN201811355738A CN109348431B CN 109348431 B CN109348431 B CN 109348431B CN 201811355738 A CN201811355738 A CN 201811355738A CN 109348431 B CN109348431 B CN 109348431B
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bluetooth
beacon data
processor
timer
scanning
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CN109348431A (en
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陈岩
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the application discloses a Bluetooth scanning method, a Bluetooth scanning device, Bluetooth scanning equipment and a storage medium, and belongs to the technical field of Bluetooth. The method comprises the following steps: in the low power consumption mode, when Beacon data are received, a processor is awakened, the Beacon data are broadcasted by the Bluetooth main equipment, and the processor is used for processing the Beacon data; if n pieces of Beacon data broadcasted by the same Bluetooth master device are received, acquiring n pieces of received signal intensity corresponding to the n pieces of Beacon data, wherein n is not less than 2 and is an integer; and if the n received signal intensities meet the preset condition, closing the Bluetooth scanning, wherein after the Bluetooth scanning is closed, the Bluetooth slave equipment stops receiving Beacon data. According to the embodiment of the application, frequent awakening of the processor due to frequent reception of Beacon data broadcast by the same Bluetooth master device can be avoided, and the power consumption of the Bluetooth slave device in the low power consumption mode is further reduced.

Description

Bluetooth scanning method, device, equipment and storage medium
Technical Field
The embodiment of the application relates to the technical field of Bluetooth, in particular to a Bluetooth scanning method, a Bluetooth scanning device, Bluetooth scanning equipment and a storage medium.
Background
With the continuous maturity of bluetooth technology, more and more terminals possess the bluetooth function. Data communication can be performed between terminals by establishing a bluetooth connection.
Three Bluetooth operation modes are defined in Bluetooth Low Energy (BLE) 4.0 protocol, which are Low Power Mode (Low Power Mode), balanced Mode (Balance Mode) and Low Latency Mode (Low Latency Mode). Wherein, the Bluetooth scanning time in the low power consumption mode is less than the Bluetooth scanning time in the balance mode and less than the Bluetooth scanning time in the low delay mode. And, in order to reduce the terminal power consumption, when the terminal starts the bluetooth for a long time, the bluetooth chip is in the low power consumption mode.
Disclosure of Invention
The embodiment of the application provides a Bluetooth scanning method, a Bluetooth scanning device, Bluetooth scanning equipment and a storage medium, and can solve the problem that in the related art, when data broadcasted by the same Bluetooth equipment is frequently received in a low power consumption mode, a processor needs to be frequently awakened, and power consumption is increased in the low power consumption mode. The technical scheme is as follows:
in one aspect, a bluetooth scanning method is provided, the method being used for a bluetooth slave device, the method comprising:
in a low power consumption mode, when Beacon (Beacon) data is received, waking up a processor, wherein the Beacon data is broadcasted by a Bluetooth main device, and the processor is used for processing the Beacon data;
if n pieces of Beacon data broadcasted by the same Bluetooth master device are received, acquiring n pieces of received signal intensity corresponding to the n pieces of Beacon data, wherein n is not less than 2 and is an integer;
if n received signal intensity satisfies the default condition, then close the bluetooth scanning, wherein, close the bluetooth scanning back, bluetooth slave unit stops receiving Beacon data.
In another aspect, there is provided a bluetooth scanning apparatus, the apparatus being for a bluetooth slave device, the apparatus comprising:
the data receiving module is used for awakening a processor when Beacon data are received in a low-power-consumption mode, the Beacon data are broadcasted by Bluetooth main equipment, and the processor is used for processing the Beacon data;
the intensity acquisition module is used for acquiring n received signal intensities corresponding to n pieces of Beacon data when the n pieces of Beacon data broadcasted by the same Bluetooth master device are received, wherein n is not less than 2 and is an integer;
and the closing module is used for closing the Bluetooth scanning when the n received signal strengths meet the preset condition, wherein after the Bluetooth scanning is closed, the Bluetooth slave equipment stops receiving the Beacon data.
In another aspect, a bluetooth device is provided, the bluetooth device comprising a processor, a memory, and a bluetooth component; the memory stores at least one instruction for execution by the processor to implement the bluetooth scanning method as described in the above aspect.
In another aspect, a computer-readable storage medium is provided that stores at least one instruction for execution by a processor to implement a bluetooth scanning method as described in the above aspect.
After receiving Beacon data in a low power consumption mode, the Bluetooth slave equipment determines Bluetooth master equipment broadcasting the Beacon data, acquires the received signal strength corresponding to each Beacon data when detecting that n Beacon data broadcasted by the Bluetooth master equipment are received, and closes Bluetooth scanning when the received signal strength meets a preset condition; because the Bluetooth slave equipment can not receive Beacon data after the Bluetooth scanning is turned off, the processor can be prevented from being awakened due to the fact that the Beacon data broadcasted by the same Bluetooth master equipment is received again, and the power consumption of the Bluetooth slave equipment in the low power consumption mode is further reduced.
Drawings
FIG. 1 illustrates a schematic diagram of an implementation environment provided by one embodiment of the present application;
FIG. 2 is a graph of current change of a Bluetooth slave device in a low power mode;
fig. 3 is a schematic diagram illustrating a bluetooth device according to an exemplary embodiment of the present application;
fig. 4 is a flowchart illustrating a method of a bluetooth scanning method according to an exemplary embodiment of the present application;
fig. 5 is a flowchart illustrating a method of a bluetooth scanning method according to another exemplary embodiment of the present application;
fig. 6 shows a method flowchart of a bluetooth scanning method provided by another exemplary embodiment of the present application;
fig. 7 is a flowchart illustrating a method of a bluetooth scanning method according to another exemplary embodiment of the present application;
fig. 8 shows a block diagram of a bluetooth scanning apparatus according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Reference herein to "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
Referring to fig. 1, a schematic diagram of an implementation environment provided by an embodiment of the present application is shown, where the implementation environment includes a bluetooth master device 110 and a bluetooth slave device 120.
The bluetooth master device 110 and the bluetooth slave device 120 are electronic devices equipped with bluetooth chips, and the electronic devices may be smart phones, tablet computers, smart appliances (such as smart speakers, smart refrigerators, smart air conditioners, and the like), wearable smart devices (such as smart glasses, smart watches, and the like), smart sensors (such as temperature sensors, door and window sensors, and the like), and the device types of the bluetooth master device 110 and the bluetooth slave device 120 are not limited in the embodiments of the present application. As shown in fig. 1, the bluetooth master device 110 is a smart speaker, and the bluetooth slave device 120 is a smart phone.
Optionally, the bluetooth master device 110 and the bluetooth slave device 120 support the same bluetooth protocol, for example, the bluetooth master device 110 and the bluetooth slave device 120 in this embodiment of the present application both support the BLE 4.0 protocol.
In an operating state, the bluetooth master device 110 broadcasts Beacon data (i.e. bluetooth broadcast) to the peripheral side according to a predetermined broadcast period (e.g. 100ms), and optionally, the Beacon data includes 31 bytes of data content.
In the low power mode, the bluetooth slave device 120 scans the bluetooth broadcast of the peripheral side in a predetermined scanning period (e.g., 1 s). When the Beacon data broadcast by the bluetooth master device 110 is scanned in the scanning period, the bluetooth slave device 120 wakes up the processor in the suspended state and analyzes the received Beacon data.
Certainly, the bluetooth master device 110 may switch to the bluetooth slave device by turning off the bluetooth broadcast function and turning on the bluetooth scanning function, and correspondingly, the bluetooth slave device 120 may switch to the bluetooth master device by turning on the bluetooth broadcast function and turning off the bluetooth scanning function, which is not limited in this embodiment of the present application.
Schematically, the current variation curve of the bluetooth slave device 120 in the low power mode is shown in fig. 2. In the low power consumption mode, when the bluetooth slave device 120 does not scan the bluetooth broadcast (i.e., does not receive Beacon data), it is not necessary to wake up the processor in the suspend state, so as to maintain lower power consumption; when the bluetooth broadcast is scanned, the bluetooth slave device 120 needs to wake up the processor to process the received Beacon data, which causes a high current spike to occur in the bluetooth slave device 120 in the low power consumption mode; moreover, after the bluetooth slave device 120 scans Beacon data broadcast by the same bluetooth master device each time, the processor needs to be awakened, which results in an increase in power consumption of the bluetooth slave device 120 in the low power consumption mode.
In order to solve the problem that the power consumption of equipment is increased due to frequent awakening of a processor in a low power consumption mode, the embodiment of the application provides a Bluetooth scanning method. After the Bluetooth scanning method is applied to the Bluetooth equipment, if the Bluetooth equipment continuously scans the Bluetooth broadcast broadcasted by the same Bluetooth master equipment and the Bluetooth equipment does not move (or is in a slow moving state) during the period of receiving the Bluetooth broadcast, the Bluetooth slave equipment closes the Bluetooth scanning function, thereby avoiding the problem of power consumption increase caused by frequently waking up the processor. The following description will take as an example the application of the bluetooth scanning method to the bluetooth slave device 120 shown in fig. 1.
Referring to fig. 3, a schematic diagram of a bluetooth device provided in an exemplary embodiment of the present application is shown, which can be implemented as the bluetooth slave device 120 in fig. 1.
Optionally, the bluetooth device includes: a processor 122, a memory 124, a bluetooth module 126, and a display screen 128.
Processor 122 may include one or more processing cores. The processor 122 connects various parts within the overall terminal 120 using various interfaces and lines, performs various functions of the bluetooth device and processes data by executing or executing instructions, programs, code sets, or instruction sets stored in the memory 124, and calling data stored in the memory 124. Optionally, the processor 122 may be implemented in at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). The processor 122 may integrate one or more of a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), a modem, and the like. Wherein, the CPU mainly processes an operating system, a user interface, an application program and the like; the GPU is used for rendering and drawing the content required to be displayed by the display screen; the modem is used to handle wireless communications. It is understood that the modem may not be integrated into the processor 122, but may be implemented by a single chip.
The Memory 124 may include a Random Access Memory (RAM) or a Read-Only Memory (Read-Only Memory). Optionally, the memory 140 includes a non-transitory computer-readable medium. The memory 124 may be used to store instructions, programs, code sets, or instruction sets. The memory 124 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing various method embodiments described below, and the like; the storage data area may store data and the like referred to in the following respective method embodiments.
The bluetooth module 126 is a module for implementing a bluetooth function. Optionally, the bluetooth module 126 includes a Transceiver (Transceiver), a Power Amplifier (PA), a Low Noise Amplifier (LNA), and an Antenna (Antenna).
Optionally, when transmitting the bluetooth signal, the transceiver loads data into the bluetooth signal in the predetermined frequency band according to the bluetooth protocol specification, and amplifies the bluetooth signal by the power amplifier, thereby transmitting the bluetooth signal by the antenna. When receiving the bluetooth signal, after receiving the bluetooth signal through the antenna, make an uproar to the bluetooth signal that receives through low noise amplifier to the bluetooth signal after will making an uproar is returned to the transceiver.
The display screen 128 is a component for displaying images. The display screen 128 may have only an image display function, or may have both an image display function and a function of receiving a touch operation, that is, the display screen 128 may be a touch display screen. Moreover, the display screen 128 may be a full-screen, an irregular screen, a folding screen, a curved screen, or other types of screens, which is not limited in this embodiment.
Certainly, the bluetooth device may further include other components such as a distance sensor, a camera, an acceleration sensor, an angular velocity sensor, a positioning module, and an infrared module, and this embodiment of the present application does not limit the specific structure of the bluetooth device.
Referring to fig. 4, a flowchart of a method of a bluetooth scanning method according to an exemplary embodiment of the present application is shown, where the method is described as being applied to the bluetooth slave device 120 shown in fig. 1, and the method may include the following steps.
Step 401, in the low power consumption mode, when the Beacon data is received, waking up a processor, wherein the Beacon data is broadcasted by the bluetooth master device, and the processor is used for processing the Beacon data.
In the low power consumption mode, the Bluetooth slave device scans Bluetooth broadcast according to a preset scanning period, and if the Bluetooth broadcast is not scanned in the current scanning period, the Bluetooth slave device cannot wake up the processor in the suspended state and scans again when the next scanning period is reached. If the bluetooth broadcast is scanned, the bluetooth slave device wakes up the processor in the suspended state, and processes the received bluetooth broadcast data (i.e., Beacon data) through the processor.
Optionally, the Beacon data includes a Unique Universal Identifier (UUID), a number (major), a label (minor), and a Received Signal Strength Indication (RSSI). The application does not limit the specific content contained in the Beacon data.
Step 402, if n pieces of Beacon data broadcasted by the same bluetooth master device are received, n pieces of received signal strength corresponding to the n pieces of Beacon data are obtained, wherein n is not less than 2, and n is an integer.
In a possible implementation manner, for each piece of received Beacon data, the bluetooth slave device determines a bluetooth master device broadcasting Beacon data, and detects whether n pieces of Beacon data broadcasted by the same bluetooth master device are continuously received (the bluetooth slave device needs to frequently wake up the processor in the process of receiving the n pieces of Beacon data).
If n pieces of Beacon data broadcasted by the same Bluetooth master device are continuously received, the Bluetooth slave device further acquires the respective received signal strength of the n pieces of Beacon data. Optionally, the received signal strength is obtained and recorded when Beacon data is received.
And if the n pieces of Beacon data broadcasted by the same Bluetooth master device are not continuously received, the Bluetooth slave device continues to perform Bluetooth scanning.
Optionally, when it is determined whether the n pieces of Beacon data are continuously received, the bluetooth slave device acquires the receiving time of each piece of Beacon data, calculates the receiving time difference of adjacent Beacon data according to the receiving time, and determines that the n pieces of Beacon data are continuously received if the calculated n-1 receiving time differences are the same.
For example, when 10 pieces of Beacon data broadcast by the same bluetooth master device are continuously received, the bluetooth slave device acquires the received signal strength corresponding to each of the 10 pieces of Beacon data.
In a possible implementation manner, when the bluetooth slave device scans Beacon data broadcast by a plurality of bluetooth master devices at the same time, the bluetooth slave device counts the number of times of receiving the Beacon data broadcast by each bluetooth master device, and executes the step of obtaining the Beacon data receiving signal strength when the number of times of receiving the Beacon data broadcast by any bluetooth master device reaches n.
And step 403, if the n received signal strengths meet the preset condition, turning off the bluetooth scanning, wherein after the bluetooth scanning is turned off, the bluetooth slave device stops receiving Beacon data.
In a possible implementation manner, the bluetooth slave device identifies whether the bluetooth slave device moves according to n received signal strengths, and if the n received signal strengths indicate that the bluetooth slave device does not move, determines that the n received signal strengths satisfy a preset condition, and turns off bluetooth scanning in a low power consumption mode, thereby avoiding waking up the processor due to the fact that Beacon data broadcast by the same bluetooth master device is received again.
In a possible application scenario, in a standby state, the bluetooth of the smart phone is in a low power consumption working mode, and when the smart phone stays at a certain place and scans Beacon data broadcast by peripheral bluetooth devices, in the related art, the smart phone continuously receives the Beacon data during the stay period, and further wakes up the CPU frequently; by adopting the scheme provided by the embodiment of the application, the smart phone can close the Bluetooth scanning function when continuously receiving the same Beacon data and detecting that the smart phone does not move, so that the CPU is prevented from being frequently awakened, and the overall power consumption of the smart phone in the low power consumption mode is reduced.
To sum up, in the embodiment of the present application, after receiving Beacon data in a low power consumption mode, a bluetooth slave device determines a bluetooth master device that broadcasts the Beacon data, and obtains received signal strength corresponding to each Beacon data when detecting that n Beacon data broadcasted by the bluetooth master device are received, so as to close bluetooth scanning when the received signal strength meets a preset condition; because the Bluetooth slave equipment can not receive Beacon data after the Bluetooth scanning is turned off, the processor can be prevented from being awakened due to the fact that the Beacon data broadcasted by the same Bluetooth master equipment is received again, and the power consumption of the Bluetooth slave equipment in the low power consumption mode is further reduced.
In one possible implementation mode, when detecting that the received signal strength meets a preset condition, the bluetooth slave device starts a timer and closes bluetooth scanning within the duration of the timer; when the time of the timer is reached, the Bluetooth slave equipment restarts Bluetooth scanning. The following description will be made by using exemplary embodiments.
Referring to fig. 5, a flowchart of a method of a bluetooth scanning method according to another exemplary embodiment of the present application is shown, where the method is described as being applied to the bluetooth slave device 120 shown in fig. 1, and the method may include the following steps.
Step 501, in the low power consumption mode, when Beacon data is received, a processor is awakened, the Beacon data is broadcasted by the Bluetooth main device, and the processor is used for processing the Beacon data.
The step 401 may be referred to in the implementation manner of this step, and this embodiment is not described herein again.
And 502, reading Bluetooth equipment identifications contained in each Beacon data.
For each piece of received Beacon data, the Bluetooth slave device reads a Bluetooth device identifier contained in the Beacon data, and determines the Bluetooth master device broadcasting the Beacon data according to the Bluetooth device identifier. Optionally, the bluetooth slave device reads the bluetooth device identifier from the UUID field of the Beacon data.
Step 503, if n pieces of Beacon data containing the same bluetooth device identifier are received, determining that the n pieces of Beacon data are broadcasted by the same bluetooth master device, and acquiring n pieces of received signal strength corresponding to the n pieces of Beacon data.
In a possible implementation manner, the bluetooth slave device records the received signal strength corresponding to each piece of Beacon data, and when n pieces of Beacon data containing the same bluetooth device identifier are received, the bluetooth slave device determines that the n pieces of Beacon data are broadcast by the same bluetooth master device, and reads the received signal strength corresponding to each piece of Beacon data.
Illustratively, the received signal strength corresponding to 9 Beacon data acquired by the bluetooth slave device is shown in table one.
Watch 1
Beacon data 1 2 3 4 5 6 7 8 9
Received signal strength -60dbm -59dbm -61dbm -63dbm -100dbm -60dbm -60dbm -62dbm -60dbm
Step 504, determine the signal strength interval corresponding to the n received signal strengths.
In one possible embodiment, the bluetooth slave device determines a minimum received signal strength of the n received signal strengths as a left interval value of the signal strength interval and determines a maximum received signal strength of the n received signal strengths as a right interval value of the signal strength interval.
Since the received signal strength may be affected by obstacles, the bluetooth slave device first filters invalid data from the n received signal strengths before determining the signal strength interval.
Optionally, the terminal filters the n received signal strengths by an arithmetic mean filtering method, and filters invalid data generated by a measurement error or signal fluctuation, thereby determining a signal strength interval according to the remaining received signal strengths. In other possible implementations, the bluetooth slave device may further filter the interference value by using an algorithm such as amplitude-limiting filtering, amplitude-limiting average filtering, or jitter-removing filtering, which is not limited in this embodiment.
Illustratively, in conjunction with the data shown in Table one, the Bluetooth slave device first filters the invalid data, — 100dbm ", and then determines from the remaining received signal strength that the signal strength interval is (-63dbm, -59 dbm).
In step 505, if the interval length corresponding to the signal strength interval is smaller than the interval length threshold, it is determined that the n received signal strengths satisfy the preset condition.
When the Bluetooth slave equipment is in a static state, the signal intensity of Beacon data received by the same Bluetooth master equipment and broadcasted by the same Bluetooth master equipment cannot fluctuate greatly, so that the Bluetooth slave equipment determines whether the Bluetooth slave equipment is in the static state or not according to the interval length corresponding to the signal intensity interval.
In a possible implementation manner, the bluetooth slave device detects whether an interval length corresponding to the signal strength interval is smaller than an interval length threshold, if so, determines that the bluetooth slave device is in a static state, and executes step 506; and if so, determining that the mobile terminal is in the motion state.
In connection with the example in the above-described embodiment, when the section length threshold value is 5dbm, since the section length (4dbm) of this signal strength section (-63dbm, -59dbm) is smaller than the section length threshold value, the bluetooth slave device determines that itself is in a stationary state.
In step 506, if the n received signal strengths satisfy the predetermined condition, a timer is started.
After determining that the Bluetooth slave device is in a static state according to the n received signal strengths, the Bluetooth slave device further starts a timer.
Optionally, the timer duration of the timer is a fixed value, or the timer duration is dynamically determined by the bluetooth slave device.
For example, the timer duration of the timer is 1 minute.
And step 507, turning off the Bluetooth scanning within the timer duration of the timer.
After the timer is started, the bluetooth scanning function of the bluetooth slave device keeps in an off state within the duration of the timer. Because the Beacon data can not be received after the Bluetooth scanning is closed, the processor can keep a suspension state within the time length of the timer, and the power consumption of the equipment is further reduced.
In addition to the power consumption reduction by turning off the bluetooth scanning function for the timer duration, in other possible embodiments, the bluetooth slave device may extend the bluetooth scanning period for the timer duration, thereby reducing the number of times the processor is woken up. For example, the bluetooth slave device extends the bluetooth scanning period from 1 s/time to 10 s/time within the duration of the timer.
And step 508, restarting the Bluetooth scanning when the timer reaches the duration of the timer.
When the time of the timer is reached, the Bluetooth slave equipment restarts Bluetooth scanning and wakes up the processor when Beacon data broadcasted by the Bluetooth master equipment is received.
In step 509, if the Beacon data broadcasted by the bluetooth master device is received and the received signal strength of the Beacon data is within the signal strength interval, the timer is started and the bluetooth scanning is turned off within the time length of the timer.
After the bluetooth scanning is restarted, if the bluetooth slave device receives the Beacon data broadcast by the previous bluetooth master device again (determined based on the bluetooth device identifier in the Beacon data), further detecting whether the received signal strength of the Beacon data is located in the signal strength interval corresponding to the Beacon data before the timer is started. If the received signal strength is in the signal strength interval, determining that the Bluetooth slave device (relative to the Bluetooth master device) does not move, and restarting the timer, so that Bluetooth scanning is stopped within the time length of the timer, and the power consumption of the device is reduced; and if the received signal strength is outside the signal strength interval, determining that the Bluetooth slave equipment moves, and continuously keeping Bluetooth scanning.
Optionally, in order to improve the judgment accuracy, when m pieces of Beacon data broadcasted by the bluetooth master device are received and the received signal strength of the m pieces of Beacon data is within the signal strength interval, the bluetooth slave device starts a timer, wherein m is less than n, and m is an integer.
With reference to the example in step 504, after the bluetooth scan is restarted, the Beacon data received before the timer is started is received again, and the received signal strength is-60 dbm, since-60 dbm is located in the signal strength interval of (-63dbm, -59dbm), the bluetooth slave device determines that it has not moved, and restarts the timer.
In the embodiment, the Bluetooth slave device determines whether the Bluetooth slave device moves according to the continuously received signal intensity interval of the same Beacon data, and closes Bluetooth scanning within the time length of the timer when the Bluetooth slave device does not move, so that the processor in the time length of the timer is prevented from being frequently awakened; simultaneously when reaching the time length of timer, bluetooth slave unit restarts the bluetooth scanning, avoids the bluetooth scanning to close for a long time and causes the influence to the use.
In a possible implementation manner, in order to further increase the power consumption of the device in the static state, the bluetooth slave device dynamically sets the timer duration of the next timer according to the number of times of starting the timer, and on the basis of fig. 5, as shown in fig. 6, the step 506 further includes the following steps before:
step 510, acquiring the starting times of the timer.
When the received signal strength of n pieces of Beacon data received continuously is determined to meet the preset condition, the Bluetooth slave device determines that a timer needs to be started, so as to acquire the (continuous) starting times of the timer, wherein the longer the starting times of the timer is, the longer the time for the Bluetooth slave device to keep in a static state is.
In a possible implementation manner, each time the bluetooth slave device starts the timer, an operation is added to the starting times of the timer, and the subsequent bluetooth slave device can directly read the starting times.
Illustratively, the number of times the bluetooth slave device acquires the timer is started is 5 times.
And 511, determining the time length of the timer according to the starting times, and adding one to the starting times, wherein the time length of the timer and the starting times are in positive correlation.
In one possible embodiment, the timer duration of the timer is fixed, for example, the timer duration is 1 minute. However, when a fixed timer duration is adopted, if the timer duration is set too long, the bluetooth scanning is turned off for a long time, which affects normal use; if the timer duration is set to be too short, the Bluetooth slave device can wake up the processor frequently after the timer duration is reached.
Therefore, in this embodiment, the timer duration of the timer is dynamically determined according to the number of times the timer is started. The time length of the timer and the starting times are in positive correlation, namely the more the starting times of the timer are, the longer the time length of the timer is. In one possible implementation, the bluetooth slave device stores a corresponding relationship between the duration of the timer and the number of times of starting, and the corresponding relationship is schematically shown in table two.
Watch two
Number of starts Duration of timer
1-2 times 1min
2-5 times 5min
More than 5 times 10min
For example, when the number of times of acquiring the timer from the bluetooth slave device is 5, the duration of the timer is determined to be 5min based on the correspondence shown in table two.
And simultaneously, the Bluetooth slave equipment performs an operation of adding one to the starting times of the timer so as to determine the time length of the timer according to the real-time starting times before the timer is started again subsequently.
For example, the bluetooth slave device performs an addition operation on the number of activation times of 5 times to obtain an updated number of activation times of 6 times.
In addition to dynamically determining the duration of the timer according to the number of times of starting, in other possible embodiments, before the bluetooth slave device starts the timer, the bluetooth slave device may determine a current time period to which the current time belongs, and determine the duration of the timer corresponding to the current time period. The different time periods correspond to different timer durations, and the timer durations and the use frequency of the equipment in the time periods are in a negative correlation relationship. For example, the timer duration corresponding to the late-night time period is longer than the timer duration corresponding to the daytime time period (since the frequency of using the device by the user is lower late-night compared to the daytime, the longer timer duration can be set late-night, thereby reducing power consumption).
In other possible embodiments, the bluetooth slave device may acquire the current geographic location before starting the timer, and determine a timer duration corresponding to the current geographic location. The different geographic positions correspond to different timer durations, and the timer durations are in positive correlation with the use frequency of the equipment at the geographic positions.
Accordingly, after the step 508, the following steps are also included.
And step 512, resetting the starting times if the Beacon data broadcasted by the Bluetooth master device is received and the received signal intensity of the Beacon data is outside the signal intensity interval.
If the received signal strength is outside the signal strength interval, the Bluetooth slave device determines that the Bluetooth slave device moves, and in order to avoid the influence of the starting times of current maintenance on the time length of a timer of a subsequent timer, the Bluetooth slave device resets the starting times of the timer, and sets the starting times to 0.
In this embodiment, the bluetooth slave device dynamically determines the duration of the timer according to the starting times of the timer, so as to avoid the problem that the bluetooth scanning is turned off for a long time (the duration of the timer is too long) due to the adoption of a fixed timer duration, or the processor is frequently awakened (the duration of the timer is too short) after the duration of the timer is reached.
In the above embodiment, the bluetooth slave determines whether to turn off the bluetooth scan based on the section length threshold, and therefore the execution effect of the bluetooth scan turn-off policy is important closely to the set section length threshold. However, since the preset interval length threshold is obtained by testing in a laboratory, and the complexity of the practical application scenario is much higher than that of the experimental scenario, the preset interval length threshold may not be reasonable.
In a possible implementation manner, the bluetooth slave device reports the number of awakening times of the front and rear processors executing the bluetooth scanning shutdown strategy to the server, and the server analyzes the number of awakening times uploaded by a large number of devices, so as to determine the execution effect of the bluetooth scanning shutdown strategy and further adjust the interval length threshold value related to the execution effect.
Optionally, on the basis of fig. 5, as shown in fig. 7, the following steps are further included after step 509.
Step 513, acquiring a first processor wake-up frequency and a second processor wake-up frequency of the bluetooth slave device in the low power consumption mode, where the first processor wake-up frequency is the wake-up frequency of the processor when the bluetooth scan shutdown policy is executed, and the second processor wake-up frequency is the wake-up frequency of the processor when the bluetooth scan shutdown policy is not executed.
In a possible implementation manner, the bluetooth slave device executes a bluetooth scanning shutdown strategy in a first time period, and adds one to the awakening times each time the processor is awakened, so as to obtain the awakening times of the first processor in the first time period; correspondingly, the Bluetooth scanning closing strategy is not executed in the second time period, and when the processor is wakened up each time, the wakening times are added, so that the wakening times of the second processor in the second time period are obtained, wherein the lengths of the first time period and the second time period are the same. For example, the first time period and the second time period are each one day.
And 514, reporting the first processor awakening times and the second processor awakening times to a server, wherein the server is used for determining the execution effect of the bluetooth scanning shutdown strategy according to the first processor awakening times and the second processor awakening times reported by each bluetooth device, and updating the interval length threshold according to the execution effect.
The Bluetooth slave device reports the acquired first processor awakening times and the acquired second processor awakening times to the server, and the server determines the execution effect of the Bluetooth scanning shutdown strategy according to the first processor awakening times and the second processor awakening times.
In a possible implementation manner, the server calculates a ratio of the first processor wake-up times to the second processor wake-up times, and determines an execution effect according to the ratio, so that the interval length threshold is updated according to the execution effect.
Optionally, when the ratio is less than the first threshold (e.g., 0.05), the server determines that the bluetooth scan is turned off too frequently, thereby increasing the update interval length threshold; when the ratio of the first threshold value to the second threshold value (for example, 0.1) is less than or equal to the first threshold value, the server determines that the execution effect is good, so that the current interval length threshold value is maintained; when the ratio is larger than the second threshold value, the server determines that the number of times of closing the Bluetooth scanning is too small, so that the updating interval length threshold value is reduced.
Optionally, the server issues the updated interval length threshold to each bluetooth device, so that the bluetooth device updates the local interval length threshold.
In the embodiment, with the help of big data, the server dynamically adjusts the parameters in the Bluetooth scanning shutdown strategy, so that the rationality of the Bluetooth scanning shutdown strategy is improved, and the problem of too many or too few Bluetooth scanning shutdown times caused by unreasonable parameter setting is avoided.
Referring to fig. 8, a block diagram of a bluetooth scanning apparatus according to an embodiment of the present application is shown. The bluetooth scanning apparatus may be implemented as all or a portion of the bluetooth slave device 120 through software, hardware, or a combination of both. The device includes:
the data receiving module 801 is used for waking up a processor when Beacon data is received in a low power consumption mode, the Beacon data is broadcasted by a Bluetooth main device, and the processor is used for processing the Beacon data;
the intensity obtaining module 802 is configured to obtain n received signal intensities corresponding to n pieces of Beacon data when n pieces of Beacon data broadcast by the same bluetooth master device are received, where n is greater than or equal to 2 and is an integer;
and a closing module 803, configured to close the bluetooth scan when the n received signal strengths satisfy the preset condition, where after the bluetooth scan is closed, the bluetooth slave device stops receiving the Beacon data.
Optionally, the strength obtaining module 802 includes:
the identifier reading unit is used for reading Bluetooth equipment identifiers contained in the Beacon data;
and the intensity acquisition unit is used for determining n Beacon data if the n Beacon data containing the same Bluetooth equipment identifier are received, wherein the Beacon data are broadcasted by the same Bluetooth master equipment and acquire n Beacon data corresponding to the n received signal intensities.
Optionally, the apparatus further comprises:
an interval determining module, configured to determine a signal strength interval corresponding to the n received signal strengths;
and the condition determining module is used for determining that the n received signal strengths meet the preset condition if the interval length corresponding to the signal strength interval is smaller than an interval length threshold.
Optionally, the closing module 803 includes:
the timer starting unit is used for starting the timer;
the scanning closing unit is used for closing Bluetooth scanning within the time length of the timer;
the device further comprises:
and the restarting scanning module is used for restarting the Bluetooth scanning when the timer reaches the time length of the timer.
Optionally, the apparatus further includes:
the timer restarting module is used for receiving the Beacon data broadcasted by the Bluetooth master equipment, and the received signal intensity of the Beacon data is located between the signal intensity intervals, so that the timer is started, and the Bluetooth scanning is closed in the time length of the timer.
Optionally, the apparatus further comprises:
the starting frequency acquisition module is used for acquiring the starting frequency of the timer;
the time length determining module is used for determining the time length of the timer according to the starting times and adding one to the starting times, wherein the time length of the timer is in positive correlation with the starting times;
the device further comprises:
the reset module is used for receiving the Beacon data broadcasted by the Bluetooth master device, the received signal intensity of the Beacon data is located outside the signal intensity interval, and then the reset is carried out on the starting times.
Optionally, the apparatus further comprises:
the system comprises a wake-up frequency acquisition module, a bluetooth slave device and a bluetooth scanning shutdown strategy acquisition module, wherein the wake-up frequency acquisition module is used for acquiring the wake-up frequency of a first processor and the wake-up frequency of a second processor of the bluetooth slave device in a low power consumption mode, the wake-up frequency of the first processor is the wake-up frequency of the processor when the bluetooth scanning shutdown strategy is executed, and the wake-up frequency of the second processor is the wake-up frequency of the processor when the bluetooth scanning shutdown strategy is not executed;
and the reporting module is used for reporting the first processor awakening times and the second processor awakening times to a server, and the server is used for determining the execution effect of the Bluetooth scanning shutdown strategy according to the first processor awakening times and the second processor awakening times reported by each Bluetooth device and updating the interval length threshold according to the execution effect.
To sum up, in the embodiment of the present application, after receiving Beacon data in a low power consumption mode, a bluetooth slave device determines a bluetooth master device that broadcasts the Beacon data, and obtains received signal strength corresponding to each Beacon data when detecting that n Beacon data broadcasted by the bluetooth master device are received, so as to close bluetooth scanning when the received signal strength meets a preset condition; because the Bluetooth slave equipment can not receive Beacon data after the Bluetooth scanning is turned off, the processor can be prevented from being awakened due to the fact that the Beacon data broadcasted by the same Bluetooth master equipment is received again, and the power consumption of the Bluetooth slave equipment in the low power consumption mode is further reduced.
It should be noted that, in this embodiment, only the bluetooth scanning apparatus including the module is taken as an example for description, and the bluetooth scanning apparatus may also be divided into other functional modules for implementing the bluetooth scanning method according to other manners, which is not limited in this embodiment.
The embodiment of the present application further provides a computer-readable medium, which stores at least one instruction, where the at least one instruction is loaded and executed by the processor to implement the bluetooth scanning method according to the above embodiments.
The embodiment of the present application further provides a computer program product, where at least one instruction is stored, and the at least one instruction is loaded and executed by the processor to implement the bluetooth scanning method according to the above embodiments.
Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A bluetooth scanning method, wherein the method is used for a bluetooth slave device, and wherein the method comprises:
in a low power consumption mode, when Beacon data are received, a processor is awakened, the Beacon data are broadcasted by Bluetooth main equipment, and the processor is used for processing the Beacon data;
if n pieces of Beacon data broadcasted by the same Bluetooth master device are received, acquiring n pieces of received signal intensity corresponding to the n pieces of Beacon data, wherein n is not less than 2 and is an integer;
if n received signal intensity indicates that the bluetooth slave unit does not move, then confirm n received signal intensity satisfies the preset condition to close the bluetooth scanning, wherein, after closing the bluetooth scanning, the bluetooth slave unit stops receiving the Beacon data.
2. The method of claim 1, wherein if n pieces of Beacon data broadcasted by the same bluetooth master device are received, acquiring n received signal strengths corresponding to the n pieces of Beacon data comprises:
reading Bluetooth equipment identifiers contained in each Beacon data;
if receive n and contain same bluetooth equipment sign Beacon data, then confirm n Beacon data is broadcast by same bluetooth master device to acquire n Beacon data corresponds n received signal intensity.
3. The method according to claim 1 or 2, wherein after obtaining n received signal strengths corresponding to the n pieces of Beacon data, the method further comprises:
determining signal intensity intervals corresponding to the n received signal intensities;
and if the interval length corresponding to the signal intensity interval is smaller than an interval length threshold, determining that the n received signal intensities meet the preset condition.
4. The method of claim 3, wherein turning off the Bluetooth scan comprises:
starting a timer;
closing Bluetooth scanning within the timer duration of the timer;
after the turning off the bluetooth scan, the method further comprises:
and when the timer reaches the time length of the timer, restarting Bluetooth scanning.
5. The method of claim 4, wherein after the Bluetooth scan is turned back on, the method further comprises:
if receive the bluetooth master equipment is broadcast Beacon data, just the received signal intensity of Beacon data is located signal intensity interval then starts the timer, and close the bluetooth scanning in the timer is long.
6. The method of claim 5, wherein prior to the starting the timer, the method further comprises:
acquiring the starting times of the timer;
determining the time length of the timer according to the starting times, and adding one to the starting times, wherein the time length of the timer and the starting times are in positive correlation;
after the restarting the bluetooth scan, the method further comprises:
if receive the bluetooth master equipment is broadcast Beacon data, just Beacon data's received signal intensity is located outside the signal intensity interval, then reset the number of times of starting.
7. The method of claim 3, further comprising:
acquiring a first processor wake-up frequency and a second processor wake-up frequency of the Bluetooth slave device in a low power consumption mode, wherein the first processor wake-up frequency is the wake-up frequency of the processor when a Bluetooth scanning shutdown strategy is executed, and the second processor wake-up frequency is the wake-up frequency of the processor when the Bluetooth scanning shutdown strategy is not executed;
and reporting the first processor awakening times and the second processor awakening times to a server, wherein the server is used for determining the execution effect of the Bluetooth scanning shutdown strategy according to the first processor awakening times and the second processor awakening times reported by each Bluetooth device and updating the interval length threshold according to the execution effect.
8. An apparatus for bluetooth scanning, the apparatus being for a bluetooth slave device, the apparatus comprising:
the data receiving module is used for awakening a processor when Beacon data are received in a low-power-consumption mode, the Beacon data are broadcasted by Bluetooth main equipment, and the processor is used for processing the Beacon data;
the intensity acquisition module is used for acquiring n received signal intensities corresponding to n pieces of Beacon data when the n pieces of Beacon data broadcasted by the same Bluetooth master device are received, wherein n is not less than 2 and is an integer;
and the closing module is used for determining that the n received signal strengths meet the preset condition and closing the Bluetooth scanning when the n received signal strengths indicate that the Bluetooth slave equipment does not move, wherein after the Bluetooth scanning is closed, the Bluetooth slave equipment stops receiving the Beacon data.
9. A bluetooth device, characterized in that the bluetooth device comprises a processor, a memory and a bluetooth component; the memory stores at least one instruction for execution by the processor to implement the bluetooth scanning method of any of claims 1 to 7.
10. A computer-readable storage medium having stored thereon at least one instruction for execution by a processor to implement the bluetooth scanning method of any of claims 1 to 7.
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