CN108632797B - Fast Bluetooth connection method and Bluetooth system for reducing interference - Google Patents
Fast Bluetooth connection method and Bluetooth system for reducing interference Download PDFInfo
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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
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- H04W24/00—Supervisory, monitoring or testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
Abstract
The invention provides a fast Bluetooth connection method for reducing interference, which comprises the following steps: the slave Bluetooth device transmits the device information of the slave Bluetooth device to the master Bluetooth device through audio communication, wherein the master Bluetooth device is in a normally open state in each time period and continuously receives the device information transmitted by the slave Bluetooth device, the slave Bluetooth device is suspended after transmitting the device information of the slave Bluetooth device in each time period, and the slave Bluetooth device retransmits the device information of the slave Bluetooth device when entering the next time period; and the master Bluetooth device receives the device information of the slave Bluetooth device and establishes Bluetooth connection with the slave Bluetooth device according to the device information of the slave Bluetooth device. The Bluetooth connection method provided by the invention can effectively reduce the interference of audio transmission while performing Bluetooth connection rapidly, thereby further saving the connection time.
Description
Technical Field
The invention relates to the technical field of Bluetooth communication, in particular to a quick Bluetooth connection method and a Bluetooth system for reducing interference.
Background
With the pursuit of people for wireless life, audio equipment such as wireless earphones, wireless sound boxes and the like enters common families. Bluetooth is used as the most popular wireless connection method in wireless headsets and wireless sound boxes. But the connection speed between bluetooth devices is slow, especially for previously unpaired bluetooth devices. Firstly, after starting up the master Bluetooth device, the master Bluetooth device initiates searching nearby Bluetooth slave devices, and after searching, the master Bluetooth device selects the devices to be connected to establish connection. In this process, the active device needs to search to obtain the device information of the bluetooth slave device to be connected, and then perform pairing between devices using the PIN code. This process is time consuming, often taking 5 to 6 seconds, and in a crowded environment it takes up to almost 30 seconds. This approach is also very inconvenient for the user to set up when the device is connected.
The existing bluetooth system and the whole process of bluetooth communication include bluetooth searching, pairing, connection and communication, and the mode is also very inconvenient for the user to set the equipment when connecting. With the development of communication technology, in the prior art, bluetooth connection is performed by sending audio from a bluetooth device to a master bluetooth device, but there is still time loss in the audio transceiving process, the transmission time of a bluetooth slave device is long, and other master and slave bluetooth connections with audio communication are affected.
Therefore, in order to solve the above problems, a fast bluetooth connection method and a bluetooth system that can reduce interference are needed.
Disclosure of Invention
One aspect of the present invention is to provide a fast bluetooth connection method for reducing interference, including the following steps: the slave bluetooth device transmits device information of the slave bluetooth device to the master bluetooth device through audio communication, wherein,
the master Bluetooth device is in a normally open state in each time period, continuously receives the device information sent by the slave Bluetooth device, and the slave Bluetooth device pauses after sending the device information of the slave Bluetooth device in each time period and resends the device information of the slave Bluetooth device when entering the next time period;
and the master Bluetooth device receives the device information of the slave Bluetooth device and establishes Bluetooth connection with the slave Bluetooth device according to the device information of the slave Bluetooth device.
Preferably, the method further comprises the steps of:
the slave Bluetooth equipment acquires equipment information, and performs digital modulation and synchronous head addition on the acquired equipment information;
transmitting the equipment information after data modulation and synchronous head addition through an audio transmitting module;
and the master Bluetooth device receives the device information through the audio receiving module, and synchronizes and digitally demodulates the device information.
Preferably, the method further comprises:
when the master Bluetooth device and the slave Bluetooth device establish Bluetooth connection, the master Bluetooth device closes audio signal reception and sends a signal instruction for closing audio signal transmission to the slave Bluetooth device.
Preferably, the method further comprises:
and performing frequency division and/or code division modulation on the device information of the slave Bluetooth device transmitted by the slave Bluetooth device.
Preferably, the frequency point selection of the frequency division adopts a random number generated by taking a Bluetooth device address as a random seed; the code-division spreading code is generated using a random number generated from the bluetooth device address as a random seed.
Preferably, the device information of the slave bluetooth device includes a device name and a mac address.
Preferably, the audio frequency band for transmitting the device information of the slave bluetooth device from the slave bluetooth device is in a range of 20KHz to 50 KHz.
Another aspect of the present invention is to provide a bluetooth system implementing a fast bluetooth connection with reduced interference, the system comprising:
the slave Bluetooth device is internally provided with a first audio transceiving module, a first Bluetooth connecting module and a first audio processing unit;
the main Bluetooth device is internally provided with a second audio transceiving module, a second Bluetooth connecting module and a second audio processing unit;
the slave bluetooth device transmits device information of the slave bluetooth device to the master bluetooth device through audio communication, wherein,
the master Bluetooth device is in a normally open state in each time period, continuously receives the device information sent by the slave Bluetooth device, and the slave Bluetooth device pauses after sending the device information of the slave Bluetooth device in each time period and resends the device information of the slave Bluetooth device when entering the next time period;
and the master Bluetooth device receives the device information of the slave Bluetooth device and establishes Bluetooth connection with the slave Bluetooth device according to the device information of the slave Bluetooth device.
Preferably, the slave bluetooth device transmitting the device information of the slave bluetooth device to the master bluetooth device through audio communication includes instructions to:
the slave Bluetooth equipment acquires equipment information, and performs digital modulation and synchronous head addition on the acquired equipment information;
transmitting the equipment information after data modulation and synchronous head addition through an audio transmitting module;
and the master Bluetooth device receives the device information through the audio receiving module, and synchronizes and digitally demodulates the device information.
Preferably, when the master bluetooth device establishes a bluetooth connection with the slave bluetooth device, the master bluetooth device turns off audio signal reception and sends a signal instruction for turning off audio signal transmission to the slave bluetooth device.
According to the rapid Bluetooth connection method and the Bluetooth system for reducing the interference, the device information of the slave Bluetooth device is transmitted to the master Bluetooth device for Bluetooth connection in an audio sending mode, the searching and selecting processes are omitted, the pairing time is saved, and accurate selection is realized.
According to the rapid Bluetooth connection method and the Bluetooth system for reducing the interference, when the slave Bluetooth equipment sends the equipment information of the slave Bluetooth equipment, the receiving and sending time of the master Bluetooth equipment and the slave Bluetooth equipment is controlled, the audio sending time of the slave Bluetooth equipment is reduced, and the influence on master-slave Bluetooth connection with audio communication is reduced.
The invention provides a rapid Bluetooth connection method and a Bluetooth system for reducing interference, which adopt a high-frequency band to transmit audio and carry out frequency division and/or code division modulation on a transmission signal, so that the connection of a plurality of master and slave Bluetooth devices with audio communication can be carried out simultaneously, and the influence of voice and music in the air on the connection of the master and slave Bluetooth devices is reduced.
The Bluetooth connection method provided by the invention can effectively reduce the interference of audio transmission while performing Bluetooth connection rapidly, thereby further saving the connection time.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
Further objects, features and advantages of the present invention will become apparent from the following description of embodiments of the invention, with reference to the accompanying drawings, in which:
fig. 1 schematically shows a schematic diagram of a bluetooth system implementing a fast bluetooth connection with reduced interference according to the present invention.
Fig. 2 shows a block flow diagram of audio transceiving for implementing the fast bluetooth connection method with interference reduction according to the present invention.
Fig. 3 shows a timing diagram of audio transceiving for implementing the fast bluetooth connection method with interference reduction according to the present invention.
Fig. 4 shows a bluetooth connection diagram of the fast bluetooth connection method for reducing interference according to the present invention.
Detailed Description
The objects and functions of the present invention and methods for accomplishing the same will be apparent by reference to the exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it can be implemented in different forms. The nature of the description is merely to assist those skilled in the relevant art in a comprehensive understanding of the specific details of the invention.
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings, and related technical terms should be well known to those skilled in the art. In the drawings, the same reference numerals denote the same or similar parts, or the same or similar steps, unless otherwise specified. The following describes the content of the present invention through a specific embodiment, according to the embodiment of the present invention, the master bluetooth device and the slave bluetooth device that implement mutual bluetooth connection may be a mobile phone, an ipad, a bluetooth headset, or a bluetooth speaker. In this embodiment, two bluetooth headsets connected to each other via bluetooth are taken as an example. As shown in fig. 1, the bluetooth system for implementing fast bluetooth connection with interference reduction according to the present invention includes:
from the bluetooth device 101, a first audio transceiving module 104, a first bluetooth connection module 105, and a first audio processing unit 103 are built in.
The master bluetooth device 101 is internally provided with a second audio transceiver module 106, a second bluetooth connection module 108 and a second audio processing unit 107.
The slave bluetooth device 101 transmits the device information of the slave bluetooth device 101 to the master bluetooth device 102 through audio communication. The master bluetooth device 102 performs bluetooth connection according to the device information of the slave bluetooth device 101, and according to an embodiment of the present invention, the device information of the slave bluetooth device 101 includes a device name and a mac address, and the master bluetooth device 102 performs bluetooth connection according to the device name and the mac address of the slave bluetooth device 101.
As shown in fig. 2, the flow chart of audio transceiving of the fast bluetooth connection method for reducing interference according to the present invention is shown, in this embodiment, the following instructions are included in the following steps of sending the device information of the slave bluetooth device 101 to the master bluetooth device by the slave bluetooth device 101 through audio communication:
the device information is acquired from the bluetooth device, specifically, the device information of the bluetooth device 101 is acquired by the first bluetooth module 105, and is transmitted to the first audio processing unit 103 for processing. The first audio processing unit 103 digitally modulates the acquired device information and adds a synchronization header, and carrier modulation.
The device information after data modulation and sync header addition by the first audio processing unit 103 is transmitted through the first audio transceiving module 104 (audio transmitting module, such as a speaker).
The master bluetooth device 102 receives the device information through the second audio transceiving module 106 (audio receiving module, e.g., mic), and transmits the device information to the second audio processing unit 107 to perform carrier demodulation, synchronization, and digital demodulation of the device information.
The device information is processed by the second audio processing unit 107 and then transmitted to the second bluetooth connection module 108, and the second bluetooth connection module 108 establishes a bluetooth connection with the first bluetooth connection module 105 according to the received device information (device name and mac address) of the slave bluetooth device 101.
In order to realize the low-interference fast bluetooth connection between the master bluetooth device 102 and the slave device and control the audio transmission time, as shown in fig. 3, the second audio transceiver module 106 of the master bluetooth device 102 is in a normally open state in each time period T when the second audio transceiver module 106 of the master bluetooth device 102 is turned on. That is, the second audio transceiver module 106 is always in the data receiving state for each period of time, and continuously receives the device information transmitted from the bluetooth device.
The first audio transceiver module 104 of the slave bluetooth device 101 pauses after transmitting the device information of the slave bluetooth device 101 for each period (period T), and retransmits the device information of the slave bluetooth device 101 when entering the next period. That is, the time T1 when the data is transmitted from the first audio transceiver module 104 of the bluetooth device 101 is less than the time period T, and the first audio transceiver module 104 retransmits the device information from the bluetooth device 101 when the next time period is entered. Preferably, in this embodiment, T1 ═ 1/10T.
The master Bluetooth device receives the device information of the slave Bluetooth device, and establishes Bluetooth connection with the slave Bluetooth device according to the device information of the slave Bluetooth device. Specifically, the second bluetooth connection module 108 establishes a bluetooth connection with the first bluetooth connection module 105 according to the received device information (device name and mac address) of the slave bluetooth device 101.
When the master bluetooth device 101 establishes a bluetooth connection with the slave bluetooth device 102, the master bluetooth device 102 turns off audio signal reception, that is, the second audio transceiver module 106 turns off, and sends a signal instruction to turn off audio signal transmission to the slave bluetooth device 101. The signal instruction is received by the first audio transceiver module 104 from the bluetooth device 101, and the first audio transceiver module 104 of the bluetooth device is turned off.
The present invention provides a detailed embodiment of a fast bluetooth connection method for reducing interference, which is based on the bluetooth system provided by the present invention, and the above bluetooth system will not be described again.
As shown in fig. 4, a bluetooth connection diagram of the fast bluetooth connection method for reducing interference according to the present invention is provided, where the fast bluetooth connection method for reducing interference includes the following steps:
step S101, turning on the audio transmission of the slave bluetooth device 101 and the audio reception of the master bluetooth device 102, in an embodiment, when the slave bluetooth device 101 and the master bluetooth device 102 need to perform bluetooth connection, turning on the first audio transceiver module 104 of the slave bluetooth device 101 and the second audio transceiver module 106 of the master bluetooth device 10 respectively to perform audio communication.
The slave bluetooth device 101 transmits device information of the slave bluetooth device 101, which includes a device name and a mac address, to the master bluetooth device 102 through audio communication, wherein,
the first audio transceiver module 104 of the master bluetooth device 101 is in a normally open state in each time period, and continuously receives the device information sent from the first audio transceiver module 104 of the slave bluetooth device 101, and the first audio transceiver module 104 of the slave bluetooth device 101 pauses after sending the device information of the slave bluetooth device in each time period, and resends the device information of the slave bluetooth device when entering the next time period.
Step S102, the master bluetooth device 102 receives the device information of the slave bluetooth device 101, and in the process that the master bluetooth device 102 receives the device information of the slave bluetooth device 101 (or the process that the slave bluetooth device 101 sends the device information to the master bluetooth device 102), the method includes the following steps:
device information is acquired from the bluetooth device 101, and the acquired device information is digitally modulated and a sync header is added, and carrier modulation is performed.
Transmitting the equipment information after data modulation and synchronous head addition through an audio transmitting module;
the master bluetooth device 102 receives the device information through the audio receiving module, performs carrier demodulation, and synchronization and digital demodulation on the device information.
In the above-described device information transceiving process of the slave bluetooth device 101, the first audio processing unit 103 of the slave bluetooth device 101 frequency-division and/or code-division modulates the transmitted device information of the slave bluetooth device 101. Selecting a frequency point of the frequency division by using a random number generated by taking a Bluetooth device address as a random seed; the code-divided spreading code is generated using a random number generated from the bluetooth device address as a random seed. The frequency division and/or code division adopts the random number generated by adopting the slave Bluetooth equipment address as the random seed, thereby ensuring that the frequency points and the spread spectrum codes of different slave Bluetooth equipment are different as much as possible, and leading the master-slave Bluetooth connection with the audio communication to be carried out simultaneously. Meanwhile, the code division and the frequency division also reduce the influence of voice and music in the air on the audio receiving and transmitting of the invention.
The audio frequency range of the device information sent from the bluetooth device 101 by the first audio transceiving module 104 of the bluetooth device 101 is 20KHz to 50KHz, which can effectively reduce the audio noise perceptible to human ears, and on the other hand, can make the audio transceiving of the device information less affected by voice and music in the air.
In step S103, the master bluetooth device 102 receives the device information of the slave bluetooth device 101, and establishes a bluetooth connection with the slave bluetooth device 101 according to the device information of the slave bluetooth device 101. Specifically, the second bluetooth connection module 108 establishes a bluetooth connection with the first bluetooth connection module 105 according to the received device information (device name and mac address) of the slave bluetooth device 101.
Step S104, when the master Bluetooth device 102 establishes Bluetooth connection with the slave Bluetooth device 101, the master Bluetooth device 101 closes audio signal reception, and sends a signal instruction for closing audio signal transmission to the slave Bluetooth device 102. Receiving the signal instruction from the bluetooth apparatus 101, the audio transmission is turned off. After the Bluetooth connection is established, the master and slave Bluetooth devices close audio transceiving, and audio transmission from the slave Bluetooth device 101 is only performed in a short time during the Bluetooth connection establishment process, so that the influence on the connection of other master and slave Bluetooth systems with audio communication can be reduced.
According to the rapid Bluetooth connection method and the Bluetooth system for reducing the interference, the device information of the slave Bluetooth device is transmitted to the master Bluetooth device for Bluetooth connection in an audio sending mode, the searching and selecting processes are omitted, the pairing time is saved, and accurate selection is realized.
According to the rapid Bluetooth connection method and the Bluetooth system for reducing the interference, when the slave Bluetooth equipment sends the equipment information of the slave Bluetooth equipment, the receiving and sending time of the master Bluetooth equipment and the slave Bluetooth equipment is controlled, the audio sending time of the slave Bluetooth equipment is reduced, and the influence on master-slave Bluetooth connection with audio communication is reduced.
The invention provides a rapid Bluetooth connection method and a Bluetooth system for reducing interference, which adopt a high-frequency band to transmit audio and carry out frequency division and/or code division modulation on a transmission signal, so that the connection of a plurality of master and slave Bluetooth devices with audio communication can be carried out simultaneously, and the influence of voice and music in the air on the connection of the master and slave Bluetooth devices is reduced.
The Bluetooth connection method provided by the invention can effectively reduce the interference of audio transmission while performing Bluetooth connection rapidly, thereby further saving the connection time.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
Claims (10)
1. A fast Bluetooth connection method for reducing interference is characterized by comprising the following steps: the slave bluetooth device transmits device information of the slave bluetooth device to the master bluetooth device through audio communication, wherein,
the master Bluetooth device is in a normally open state in each time period, continuously receives the device information sent by the slave Bluetooth device, the slave Bluetooth device pauses after sending the device information of the slave Bluetooth device in each time period, and resends the device information of the slave Bluetooth device when entering the next time period, and the time for sending the device information by the slave Bluetooth device in each time period is less than the time of the time period;
and the master Bluetooth device receives the device information of the slave Bluetooth device and establishes Bluetooth connection with the slave Bluetooth device according to the device information of the slave Bluetooth device.
2. The bluetooth connection method according to claim 1, characterized in that the method further comprises the steps of:
the slave Bluetooth equipment acquires equipment information, and performs digital modulation and synchronous head addition on the acquired equipment information;
transmitting the equipment information after data modulation and synchronous head addition through an audio transmitting module;
and the master Bluetooth device receives the device information through the audio receiving module, and synchronizes and digitally demodulates the device information.
3. The bluetooth connection method according to claim 1, characterized in that the method further comprises:
when the master Bluetooth device and the slave Bluetooth device establish Bluetooth connection, the master Bluetooth device closes audio signal reception and sends a signal instruction for closing audio signal transmission to the slave Bluetooth device.
4. The bluetooth connection method according to claim 1 or 2, characterized in that the method further comprises:
and performing frequency division and/or code division modulation on the device information of the slave Bluetooth device transmitted by the slave Bluetooth device.
5. The bluetooth connection method according to claim 4, wherein the frequency point selection of the frequency division uses a random number generated from a bluetooth device address as a random seed; the code-division spreading code is generated using a random number generated from the bluetooth device address as a random seed.
6. The bluetooth connection method according to claim 1, wherein the device information of the slave bluetooth device includes a device name and a mac address.
7. The bluetooth connection method according to claim 1, wherein the slave bluetooth device transmits the device information of the slave bluetooth device in an audio frequency band ranging from 20KHz to 50 KHz.
8. A bluetooth system for implementing a fast bluetooth connection with reduced interference, the system comprising:
the slave Bluetooth device is internally provided with a first audio transceiving module, a first Bluetooth connecting module and a first audio processing unit;
the main Bluetooth device is internally provided with a second audio transceiving module, a second Bluetooth connecting module and a second audio processing unit;
the slave bluetooth device transmits device information of the slave bluetooth device to the master bluetooth device through audio communication, wherein,
the master Bluetooth device is in a normally open state in each time period, continuously receives the device information sent by the slave Bluetooth device, the slave Bluetooth device pauses after sending the device information of the slave Bluetooth device in each time period, and resends the device information of the slave Bluetooth device when entering the next time period, and the time for sending the device information by the slave Bluetooth device in each time period is less than the time of the time period;
and the master Bluetooth device receives the device information of the slave Bluetooth device and establishes Bluetooth connection with the slave Bluetooth device according to the device information of the slave Bluetooth device.
9. The bluetooth system according to claim 8, wherein the slave bluetooth device transmitting the device information of the slave bluetooth device to the master bluetooth device through audio communication comprises instructions to:
the slave Bluetooth equipment acquires equipment information, and performs digital modulation and synchronous head addition on the acquired equipment information;
transmitting the equipment information after data modulation and synchronous head addition through an audio transmitting module;
and the master Bluetooth device receives the device information through the audio receiving module, and synchronizes and digitally demodulates the device information.
10. The bluetooth system according to claim 8, wherein when the master bluetooth device establishes a bluetooth connection with the slave bluetooth device, the master bluetooth device turns off audio signal reception and sends a signal instruction to turn off audio signal transmission to the slave bluetooth device.
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| US20140256260A1 (en) * | 2013-03-07 | 2014-09-11 | Bose Corporation | Wireless Device Pairing |
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