CN109640304B - Method for improving low-power-consumption Bluetooth connection stability - Google Patents
Method for improving low-power-consumption Bluetooth connection stability Download PDFInfo
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- CN109640304B CN109640304B CN201811524544.2A CN201811524544A CN109640304B CN 109640304 B CN109640304 B CN 109640304B CN 201811524544 A CN201811524544 A CN 201811524544A CN 109640304 B CN109640304 B CN 109640304B
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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
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- 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
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
- H04W52/0219—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave where the power saving management affects multiple terminals
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- 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
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
- H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
- H04W52/0277—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof according to available power supply, e.g. switching off when a low battery condition is detected
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/19—Connection re-establishment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The utility model provides a method for improving the stability of the connection of the low power consumption Bluetooth, in the method, the first low power consumption Bluetooth module and the second low power consumption Bluetooth module are supplied power again and reset the data link layer and the physical layer of the first device and the second device after discharging completely, which is helpful for the first low power consumption Bluetooth module to be in the best state when initiating the connection or the second low power consumption Bluetooth module to be in the broadcast, and ensures the success rate of the next low power consumption Bluetooth connection. The method comprises the steps of adjusting parameters of the Bluetooth low energy connection when the first Bluetooth low energy module and the second Bluetooth low energy module are initially configured, and enhancing the robustness of the next Bluetooth low energy connection event, so that the success rate of the Bluetooth low energy connection between the first device and the second device and the stability of data interaction are effectively improved, and the probability that the Bluetooth low energy connection is disconnected due to environmental interference or signal attenuation is reduced.
Description
Technical Field
The present disclosure relates to the field of bluetooth communication technologies, and in particular, to a method for improving connection stability of bluetooth low energy.
Background
Bluetooth is divided into a classic bluetooth module, a low power bluetooth module, and a bluetooth dual mode module according to versions. The Bluetooth Low Energy (BLE) technology is a robust wireless technology with low cost, short distance and interoperability, and works in an unlicensed 2.4GHz ISM radio frequency band. It was designed from the beginning as an Ultra Low Power (ULP) wireless technology. It utilizes many intelligent means to minimize power consumption.
The trick used by bluetooth low energy technology to minimize wireless on-time is to search for other devices with only 3 broadcast channels or to announce its presence to the device seeking to establish a connection. In contrast, standard bluetooth technology uses 32 broadcast channels. The use of 3 broadcast channels by bluetooth low energy technology is somewhat compromised: this is a compromise on "time and robustness in very congested parts of the spectrum. Moreover, the bluetooth 4.0 standard states that the effective transmission distance in an open environment is 100 meters, but under the main constraints of low power consumption and cost, many bluetooth low energy devices have large power attenuation in practical application, and cannot reach the distance. This causes connection failure in a multi-interference (signal collision with other bluetooth low energy devices, etc.) and poor signal environment during the connection phase of the bluetooth low energy devices (bluetooth devices using bluetooth low energy technology), and poor stability of bluetooth low energy connection after the bluetooth low energy devices are successfully connected, and disconnection may occur during data interaction between the bluetooth low energy devices.
Disclosure of Invention
The disclosed object is to provide a method for improving the connection stability of bluetooth low energy, so as to solve the problem that in the related art, the bluetooth low energy connection stability of a bluetooth low energy device is poor in the environment with multiple interferences and poor signals, and the bluetooth low energy connection is disconnected during data interaction.
To achieve the above object, according to one aspect of the present disclosure, there is provided a method of improving stability of a bluetooth low energy connection, the method including: executing to turn off a power supply of a first Bluetooth low energy module of a first device and turn off a power supply of a second Bluetooth low energy module of a second device in response to a Bluetooth low energy connection passive disconnection of the first device and the second device or a Bluetooth connection failure initiated by the first device;
adding delay to wait for the first Bluetooth low energy module to be completely discharged and waiting for the second Bluetooth low energy module to be completely discharged;
turning on power supplies of the first Bluetooth low energy module and the second Bluetooth low energy module, and resetting a data link layer and a physical layer of the first device and the second device;
initializing and configuring the first Bluetooth low energy module and the second Bluetooth low energy module and adjusting parameters of Bluetooth low energy connection between the first equipment and the second equipment; and
and the first equipment and the second equipment are connected again by the low-power Bluetooth.
Optionally, the passive disconnection includes disconnection of the bluetooth low energy connection between the first device and the second device due to environmental interference or signal attenuation.
Optionally, the time of the delay is greater than or equal to the time when the first bluetooth low energy module is completely discharged, and is greater than or equal to the time when the second bluetooth low energy module is completely discharged.
Optionally, the data link layer and the physical layer of the first device are reset through a host controller interface of the first bluetooth low energy module; and resetting the data link layer and the physical layer of the second device through the host controller interface of the second Bluetooth low energy module.
Optionally, the parameters include transmission or reception power, connection timeout time, broadcast interval, and scanning interval; the adjusting the parameter of the first device and the second device for the bluetooth low energy connection includes: and increasing the Bluetooth transmitting or receiving power of the first equipment and the second equipment, increasing the Bluetooth connection timeout time and the Bluetooth scanning interval of the first equipment, and reducing the Bluetooth broadcasting interval of the second equipment.
Optionally, the initializing and configuring the first bluetooth low energy module and the second bluetooth low energy module includes: the method comprises the steps of setting names and addresses of the first Bluetooth low energy module and the second Bluetooth low energy module, initializing a general attribute configuration file, initializing a general interface file, setting related services and attributes, and setting transmitting and receiving power of the first Bluetooth low energy module and the second Bluetooth low energy module.
In summary, in the method for improving the connection stability of bluetooth low energy provided by the present disclosure, the method includes executing to turn off a power supply of a first bluetooth low energy module of a first device and turn off a power supply of a second bluetooth low energy module of a second device in response to a bluetooth low energy connection of the first device and the second device being disconnected passively or a bluetooth connection failure initiated by the first device; adding delay to wait for the first Bluetooth low energy module to be completely discharged and waiting for the second Bluetooth low energy module to be completely discharged; turning on power supplies of the first Bluetooth low energy module and the second Bluetooth low energy module, and resetting a data link layer and a physical layer of the first device and the second device; initializing and configuring the first Bluetooth low energy module and the second Bluetooth low energy module and adjusting parameters of Bluetooth low energy connection between the first equipment and the second equipment; and the first device and the second device are connected again through the low-power Bluetooth. In the method provided by the embodiment of the present disclosure, the first bluetooth low energy module and the second bluetooth low energy module re-supply power after complete discharge and reset the data link layer and the physical layer of the first device and the second device, which is helpful for the first bluetooth low energy module to be in the best state when initiating connection or the second bluetooth low energy module initiates broadcast, thereby ensuring the success rate of next bluetooth low energy connection. The method comprises the steps of adjusting parameters of the Bluetooth low energy connection when the first Bluetooth low energy module and the second Bluetooth low energy module are initially configured, and enhancing the robustness of the next Bluetooth low energy connection event, so that the success rate of the Bluetooth low energy connection between the first device and the second device and the stability of data interaction are effectively improved, and the probability that the Bluetooth low energy connection is disconnected due to environmental interference or signal attenuation is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a flow diagram illustrating a method for improving the stability of a Bluetooth Low energy connection in accordance with one illustrative embodiment;
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the embodiments of the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
As described in the related art, the bluetooth 4.0 standard says that the effective transmission distance in an open environment is 100 meters, but many bluetooth low energy devices have large power attenuation in practical applications under the main constraints of low power consumption and cost, and cannot reach the distance. This causes connection failure in a multi-interference (signal collision with other bluetooth low energy devices, etc.) and poor signal environment during the connection phase of the bluetooth low energy devices (bluetooth devices using bluetooth low energy technology), and poor stability of bluetooth low energy connection after the bluetooth low energy devices are successfully connected, and disconnection may occur during data interaction between the bluetooth low energy devices.
To address the problems in the related art, the present disclosure provides a method of improving the stability of a bluetooth low energy connection.
It should be noted that the bluetooth low energy communication process is established on the basis of connection, and can be divided into a bluetooth master device, a bluetooth slave device, also called a central device and a peripheral device according to different roles. Hereinafter referred to as master and slave. In the process of one-time Bluetooth communication, a slave is firstly broadcasted on a specific channel and is in a connected state (namely the slave initiates a broadcasting action), a host enters the connected state and listens a broadcast data packet of a slave to be detected (namely the host initiates the connecting action), when the host receives the broadcast data packet of the slave, the host sends a connection request data packet, the two parties send synchronous data packets to confirm the successful connection, and then data communication can be carried out.
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for improving stability of a bluetooth low energy connection according to an exemplary embodiment.
As shown in fig. 1, the method for improving the stability of the bluetooth low energy connection includes:
step S1: executing power-off of a first Bluetooth low energy module of the first device and power-off of a second Bluetooth low energy module of the second device in response to the Bluetooth low energy connection of the first device and the second device being disconnected passively or the first device initiating Bluetooth connection failure;
step S2: adding delay to wait for the first Bluetooth low energy module to be completely discharged and waiting for the second Bluetooth low energy module to be completely discharged;
step S3: turning on power supplies of the first Bluetooth low energy module and the second Bluetooth low energy module, and resetting a data link layer and a physical layer of the first device and the second device;
step S4: initializing and configuring the first Bluetooth low energy module and the second Bluetooth low energy module and adjusting parameters of Bluetooth low energy connection between the first equipment and the second equipment; and
step S5: and the first equipment and the second equipment are connected again by the low-power Bluetooth.
The above steps are described in detail with reference to specific examples.
It should be noted that, in this exemplary embodiment, the first device is a bluetooth master device in a bluetooth low energy connection, and the second device is a bluetooth slave device in a bluetooth low energy connection; the first device has a first bluetooth low energy module (including a chip basic circuit set of integrated bluetooth low energy technology in the first device) therein, and the second device has a second bluetooth low energy module (including a chip basic circuit set of integrated bluetooth low energy technology in the second device) therein, wherein the first bluetooth low energy module and the second bluetooth low energy module are used for transmitting or receiving bluetooth signals. Specifically, in step S1, the passively disconnecting the bluetooth low energy connection includes disconnecting the bluetooth low energy connection due to environmental interference or signal attenuation; the failure of the first device to initiate bluetooth connection includes that the first device does not successfully receive the bluetooth broadcast signal sent by the second device or the bluetooth connection request signal sent by the first device is not successfully received by the second device. And in response to that the bluetooth low energy connection between the first device and the second device is disconnected due to environmental interference or signal attenuation, the first device does not successfully receive the bluetooth broadcast signal sent by the second device or the bluetooth connection request signal sent by the first device is not successfully received by the second device, executing to turn off the power supply of the first bluetooth low energy module and turn off the power supply of the second bluetooth low energy module. Specifically, the operation of the first bluetooth module is responsible for the application layer of the first device, and the operation of the second bluetooth module is responsible for the application layer of the second device. The process of executing the power off of the first bluetooth low energy module and the power off of the second bluetooth low energy module is specifically: the application layer of the first device issues a power-off instruction to the first Bluetooth low energy module through a software and hardware interface, and then the first Bluetooth low energy module turns off the power; and the application layer of the second device issues a power-off instruction to the second Bluetooth low energy module through a software and hardware interface, and then the second Bluetooth low energy module turns off the power supply.
In step S2, a delay is added to wait for the first bluetooth low energy module to fully discharge and for the second bluetooth low energy module to fully discharge. Specifically, the increased delay time is determined according to the full discharge time of the first bluetooth low energy module and the full discharge time of the second bluetooth low energy module, and it can be understood that the delay time is greater than or equal to the full discharge time of the first bluetooth low energy module and greater than or equal to the full discharge time of the second bluetooth low energy module.
Resetting the data link layer and the physical layer of the first device and the second device after the first Bluetooth low energy module and the second Bluetooth low energy module are powered up again. Further, the resetting the data link layer and the physical layer of the first device and the second device specifically includes: the application layer of the first device resets a data link layer and a physical layer of the first device through a host controller interface of the first Bluetooth low energy module; and the application layer of the second equipment resets the data link layer and the physical layer of the second equipment through the host controller interface of the second Bluetooth low energy module. The data link layer and the physical layer are physical channels required by the low-power-consumption Bluetooth communication, and resetting the data link layer and the physical layer of the first device and the second device can ensure that the first low-power-consumption Bluetooth module is in an optimal state when initiating connection or the second low-power-consumption Bluetooth module initiates broadcasting.
After the data link layer and the physical layer of the first device and the second device are reset, step S4 is performed to initialize and configure the first bluetooth low energy module and the second bluetooth low energy module. Further, the initializing and configuring the first bluetooth low energy module and the second bluetooth low energy module specifically includes: the method comprises the steps of setting names and addresses of the first Bluetooth low energy module and the second Bluetooth low energy module, initializing a general attribute configuration file, initializing a general interface file, setting related services and attributes, and setting transmitting and receiving power of the first Bluetooth low energy module and the second Bluetooth low energy module. Further, the parameters of the bluetooth low energy connection between the first device and the second device are adjusted while the first bluetooth low energy module and the second bluetooth low energy module are initialized and configured. Specifically, the parameters include: transmit or receive power, connection timeout time, broadcast interval, and scan interval. The adjusting the parameter of the bluetooth low energy connection between the first device and the second device specifically includes: and increasing the Bluetooth transmitting or receiving power of the first equipment and the second equipment, increasing the Bluetooth connection timeout time and the Bluetooth scanning interval of the first equipment, and reducing the Bluetooth broadcasting interval of the second equipment. Specifically, the application layer of the first device or the second device issues an instruction through a software interface to set necessary configuration and parameters. The robustness of the next low-power Bluetooth connection event is enhanced by adjusting the parameters, so that the stability of the low-power Bluetooth connection and data interaction between the first device and the second device is effectively improved.
Finally, in step S5, the first device and the second device perform bluetooth low energy connection again. Specifically, the second device and the first device performing bluetooth low energy connection again includes: the first device initiates connection to the second device again or the second device initiates broadcast again; specifically, the application layer of the first device calls an initiating connection interface of a first bluetooth low energy module to initiate connection, and the application layer of the second device calls an initiating broadcast interface of a second bluetooth low energy module to initiate broadcast.
In summary, in the method for improving the connection stability of bluetooth low energy provided by the embodiment of the present disclosure, the method includes executing to turn off a power supply of a first bluetooth low energy module of a first device and turn off a power supply of a second bluetooth low energy module of a second device in response to a bluetooth low energy connection of the first device and the second device being passively disconnected or a bluetooth connection failure initiated by the first device; adding delay to wait for the first Bluetooth low energy module to be completely discharged and waiting for the second Bluetooth low energy module to be completely discharged; turning on power supplies of the first Bluetooth low energy module and the second Bluetooth low energy module, and resetting a data link layer and a physical layer of the first device and the second device; initializing and configuring the first Bluetooth low energy module and the second Bluetooth low energy module and adjusting parameters of Bluetooth low energy connection between the first equipment and the second equipment; and the first device and the second device are connected again through the low-power Bluetooth. In the method provided by the embodiment of the present disclosure, the first bluetooth low energy module and the second bluetooth low energy module re-supply power after complete discharge and reset the data link layer and the physical layer of the first device and the second device, which is helpful for the first bluetooth low energy module to be in the best state when initiating connection or the second bluetooth low energy module initiates broadcast, thereby ensuring the success rate of next bluetooth low energy connection. The method comprises the steps of adjusting parameters of the Bluetooth low energy connection when the first Bluetooth low energy module and the second Bluetooth low energy module are initially configured, and enhancing the robustness of the next Bluetooth low energy connection event, so that the success rate of the Bluetooth low energy connection between the first device and the second device and the stability of data interaction are effectively improved, and the probability that the Bluetooth low energy connection is disconnected due to environmental interference or signal attenuation is reduced.
The above description is only a preferred embodiment of the present disclosure, and does not limit the present disclosure in any way. Those skilled in the art should understand that they can make various changes, substitutions and alterations herein without departing from the scope of the disclosure, and all changes, substitutions and alterations herein without departing from the scope of the disclosure are intended to be covered by the disclosure.
Claims (5)
1. A method for improving bluetooth low energy connection stability, the method comprising:
executing to turn off a power supply of a first Bluetooth low energy module of a first device and turn off a power supply of a second Bluetooth low energy module of a second device in response to a Bluetooth low energy connection passive disconnection of the first device and the second device or a Bluetooth connection failure initiated by the first device;
adding delay to wait for the first Bluetooth low energy module to be completely discharged and waiting for the second Bluetooth low energy module to be completely discharged;
turning on power supplies of the first Bluetooth low energy module and the second Bluetooth low energy module, and resetting a data link layer and a physical layer of the first device and the second device;
initializing and configuring the first Bluetooth low energy module and the second Bluetooth low energy module and adjusting parameters of Bluetooth low energy connection between the first device and the second device, wherein the parameters comprise transmitting or receiving power, connection timeout time, broadcast interval and scanning interval; the adjusting the parameter of the first device and the second device for the bluetooth low energy connection includes: increasing the Bluetooth transmitting or receiving power of the first device and the second device, increasing the Bluetooth connection timeout time and the Bluetooth scanning interval of the first device, and reducing the Bluetooth broadcasting interval of the second device; and
and the first equipment and the second equipment are connected again by the low-power Bluetooth.
2. The method of claim 1, wherein the passively disconnecting comprises disconnecting the bluetooth low energy connection of the first device and the second device due to environmental interference or due to signal attenuation.
3. The method of claim 1, wherein the time delay is greater than or equal to the time that the first bluetooth low energy module is fully discharged and greater than or equal to the time that the second bluetooth low energy module is fully discharged.
4. The method of claim 1, wherein the data link layer and the physical layer of the first device are reset via a host controller interface of the first bluetooth low energy module; and resetting the data link layer and the physical layer of the second device through the host controller interface of the second Bluetooth low energy module.
5. The method of improving bluetooth low energy connection stability of claim 1, wherein initializing configuration of the first bluetooth low energy module and the second bluetooth low energy module comprises: the method comprises the steps of setting names and addresses of the first Bluetooth low energy module and the second Bluetooth low energy module, initializing a general attribute configuration file, initializing a general interface file, setting related services and attributes, and setting transmitting and receiving power of the first Bluetooth low energy module and the second Bluetooth low energy module.
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| CN111542040B (en) * | 2020-07-07 | 2020-10-13 | 飞天诚信科技股份有限公司 | Method and device for enhancing Bluetooth connection stability |
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| CN105474508A (en) * | 2013-08-23 | 2016-04-06 | 高通股份有限公司 | Apparatus and method for lost power detection |
| CN205193914U (en) * | 2015-12-03 | 2016-04-27 | 焦彦博 | Video access control system based on bluetooth |
| CN106793044A (en) * | 2017-02-28 | 2017-05-31 | 飞天诚信科技股份有限公司 | A kind of method and bluetooth security equipment for realizing bluetooth security equipment low-power consumption standby |
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| TWI635756B (en) * | 2016-07-12 | 2018-09-11 | 立創智能股份有限公司 | Method for building and monitoring bluetooth low-power wireless network |
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| CN105474508A (en) * | 2013-08-23 | 2016-04-06 | 高通股份有限公司 | Apparatus and method for lost power detection |
| CN205193914U (en) * | 2015-12-03 | 2016-04-27 | 焦彦博 | Video access control system based on bluetooth |
| CN106793044A (en) * | 2017-02-28 | 2017-05-31 | 飞天诚信科技股份有限公司 | A kind of method and bluetooth security equipment for realizing bluetooth security equipment low-power consumption standby |
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