CN112383907A - Bluetooth private protocol access method and system - Google Patents
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- H—ELECTRICITY
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- 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
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/08—Access security
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Abstract
The embodiment of the invention mainly aims to provide a Bluetooth private protocol access method, which comprises the following steps: terminal equipment broadcasts Bluetooth private protocol custom data; the intelligent equipment matches the user-defined data and initiates Bluetooth data connection; and the terminal equipment performs private protocol connection authentication. The embodiment of the invention also correspondingly provides a Bluetooth private protocol access system, which comprises a broadcasting device, a receiving device and a control device, wherein the broadcasting device is used for broadcasting the Bluetooth private protocol custom data; the connecting device is used for establishing the Bluetooth data connection between the intelligent equipment and the terminal equipment according to the user-defined data; and the authentication device is used for transmitting the authentication information to ensure that the terminal equipment performs the private protocol connection authentication. By adopting the scheme provided by the embodiment of the invention, the access of the private protocol can be conveniently completed.
Description
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a bluetooth private protocol access method and system.
Background
Bluetooth is an open global specification for wireless data and voice communications, and is a special short-range wireless technology connection that establishes a communication environment for fixed and mobile devices based on a low-cost short-range wireless connection. Short-distance data exchange among the fixed equipment, the mobile equipment and the building personal area network can be realized.
The bluetooth technology includes three systems, namely a bottom layer hardware module, an intermediate protocol layer and a high layer application. The intermediate protocol layer in the Bluetooth technology system mainly comprises four parts of a service discovery protocol, a logic link control and adaptation protocol, a telephone communication protocol and a serial port simulation protocol. The role of the service discovery protocol layer is to provide a mechanism for upper layer applications to facilitate the use of services in the network. The logical link control and adaptation protocol is responsible for data disassembly and assembly, multiplexing protocol and controlling service quality, and is the basis for realizing the functions of other protocol layers. Higher layer applications are the part of the framework that is located uppermost in the protocol layer. The high-level application of the Bluetooth technology mainly comprises file transmission, network and local area network access. The heterogeneous high-level applications are a kind of wireless communication realized by a certain application mode through a corresponding application program.
The Bluetooth protocol is divided into a core protocol and an optional protocol according to the importance degree, and with the gradual popularization of intelligent wearable devices, more and more internet manufacturers develop respective proprietary protocols to be applied to the Bluetooth device, and the protocols are mostly developed based on a Bluetooth SPP protocol (Serial Port Profile) and a Bluetooth low energy (Bluetooth low energy). Proprietary protocols are essentially standards developed and adopted internally by vendors, which other vendors generally do not have access to unless authorized. The proprietary protocol is also called a nonstandard protocol, which is formulated by a certain enterprise, and the protocol implementation details are not willing to be disclosed, and only the protocol used between the devices produced by the enterprise itself. However, the proprietary protocol has the characteristics of closeness, monopoly, exclusivity and the like, and the access of the bluetooth products among different manufacturers is poor.
Disclosure of Invention
In view of this, an embodiment of the present invention provides a bluetooth private protocol access method, which can conveniently complete the access of a private protocol.
The embodiment of the invention is realized in such a way that a Bluetooth private protocol access method comprises the following steps:
terminal equipment broadcasts Bluetooth private protocol custom data;
the intelligent equipment matches the user-defined data and initiates Bluetooth data connection;
and the terminal equipment performs private protocol connection authentication.
Further, the private-protocol customization data includes: at least one of a SPP UUID, a BLE UUID, and a BLE feature attribute.
Further, the bluetooth data connection comprises an SPP connection or a BLE connection.
Further, the SPP connection and BLE connection logic unifies connection and disconnection events to establish or disconnect SPP or BLE connections according to the UUID and associated attributes of the private protocol.
Further, the performing of the private protocol connection authentication by the terminal device further includes:
and the intelligent equipment transmits the key, the encryption mode and the connection attribute of the private protocol to the terminal equipment.
Further, the method further comprises: the intelligent device sends a data packet packaged according to the private protocol to the terminal device, the data packet is analyzed through a Bluetooth bottom layer protocol and is decrypted through a decryption module to obtain a plaintext of the data packet, then the data packet is unpacked according to the private protocol to obtain effective data, and the effective data is sent to different simplified interfaces.
Further, the method further comprises: and the terminal equipment acquires data information from different interfaces, performs data packaging according to the private protocol, encrypts the data, and sends the encrypted data to the intelligent equipment through a Bluetooth bottom layer protocol.
According to another aspect of the embodiments of the present invention, an embodiment of the present invention further provides a bluetooth private protocol access system, which can conveniently complete the access of a private protocol.
The embodiment of the invention is realized in such a way that a Bluetooth private protocol access system comprises:
broadcasting means for broadcasting bluetooth private protocol custom data, the custom data typically including a bluetooth address, a vendor ID, and a visibility of a bluetooth connection;
the connecting device is used for establishing the Bluetooth data connection between the intelligent equipment and the terminal equipment according to the user-defined data;
and the authentication device is used for transmitting the authentication information to ensure that the terminal equipment performs the private protocol connection authentication.
Further, the authentication information includes: private protocol keys, encryption methods and connection properties.
Further, the system further comprises at least one of the following interfaces:
the command interaction interface is used for encrypting or decrypting data according to the encryption mode of the private protocol, and the data encryption or data decryption is software encryption, OTP hardware encryption or multi-level OTP hardware encryption;
the control event interface is used for connecting events triggered by external hardware behaviors;
the intelligent voice data transmission interface is used for triggering the MIC of the terminal equipment to acquire data and perform voice coding, and is used for setting a coding format and a data length, wherein the data length is acquired according to a private protocol data packet length;
the OTA upgrading interface is used for unifying OTA upgrading flow and data;
the real-time sound effect tuning interface is used for supporting real-time tuning of the double-ear device;
and the TWS interactive interface is used for data transmission and backup between the TWS main device and the TWS slave device, and the TWS main device backs up and forwards the connection information with the intelligent device, the intermediate state and the private protocol data to the TWS slave device.
According to the technical scheme, the embodiment of the invention has the following effects: the embodiment of the invention defines a set of standard access flow framework, and can access the private protocol to the Bluetooth bottom layer of the equipment according to the framework, unify BLE and SPP and complete the private protocol access on the premise of not opening the private protocol; the private protocol is accessed, and a third party such as a mobile phone app transmits a secret key and an encryption mode, so that different terminals can realize Bluetooth connection; the framework of the scheme builds a bridge for different proprietary protocols and Bluetooth SPP/BLE bottom layers; the private protocol is defined by manufacturers, the function implementation method and the flow of each interface module designated by the system are not changed along with the change of the private protocol, and the system has the advantages of uniformity, universality, completeness, expandability and independence, and the combination and mutual cooperation of the modules, can realize the Bluetooth equipment with different purposes and functions, and is a complete implementation framework for the private protocol access of the Bluetooth equipment.
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Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 shows a flowchart of a bluetooth private protocol access method provided by the present application;
fig. 2 shows a diagram of the bluetooth private protocol access framework provided by the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments, and the order of steps in the following embodiments is merely illustrative and can be modified without conflict.
As shown in fig. 1, it is a main object of the embodiment of the present invention to provide a bluetooth private protocol access method, which includes the following steps:
s101, terminal equipment broadcasts Bluetooth private protocol custom data;
s102, the intelligent equipment matches the custom data and initiates Bluetooth data connection;
s103, the terminal equipment performs private protocol connection authentication.
Specifically, the Bluetooth terminal device broadcasts the custom data of the private protocol outwards, when the intelligent device is matched with the UUID of the protocol and the custom data of the private protocol, the intelligent device initiates Bluetooth data connection, when the protocol connection part receives a connection event, the private protocol layer of the Bluetooth terminal device starts connection authentication of the private protocol, and after the authentication is passed, Bluetooth data connection between the Bluetooth terminal device and the intelligent device is established. The Bluetooth data connection provided by the scheme can be a BLE connection and also can be a connection of an SPP protocol, so that the customized data of the private protocol comprises an SPP UUID or a BLE UUID, and when the Bluetooth data connection is the BLE connection, the customized data also needs to comprise a BLE characteristic attribute. Wherein the SPP connection and BLE connection logic unifies connection and disconnection events to establish or disconnect the SPP or BLE connection according to the UUID and associated attributes of the private protocol. In the process of connection authentication of the private protocol, the private protocol can also transmit the encryption key and the encryption mode defined by the private protocol through the part, and the like, so as to ensure the security attribute of the private protocol.
The above flow is described below with a specific example, when bluetooth terminal equipment is bluetooth speaker, the designer of this bluetooth speaker has taken the private agreement certainly, when this bluetooth speaker needs to be connected with smart machine, for example when being connected with the cell-phone, the connection APP that bluetooth speaker provided is installed in the cell-phone, APP itself has the content attribute of this private agreement, the custom data of bluetooth speaker broadcast private agreement like this, initiate SPP or BLE bluetooth data connection after the cell-phone matches this custom data, when bluetooth speaker receives this connection event, begin to carry out private agreement connection authentication to the connection event that the cell-phone sent, in this authentication process, the cell-phone transmits the private key, the encryption mode and the connection attribute to terminal equipment.
According to another aspect of the embodiments of the present invention, an embodiment of the present invention further provides a bluetooth private protocol access system, which can conveniently complete the access of a private protocol.
The embodiment of the invention is realized in such a way that a Bluetooth private protocol access system comprises:
the broadcasting device is used for broadcasting the Bluetooth private protocol custom data;
the connecting device is used for establishing the Bluetooth data connection between the intelligent equipment and the terminal equipment according to the user-defined data;
and the authentication device is used for transmitting the authentication information to ensure that the terminal equipment performs the private protocol connection authentication.
Specifically, the broadcasting device is used for broadcasting user-defined data of a private protocol outwards, the connecting device establishes a Bluetooth data connection between the intelligent equipment and the terminal equipment according to the user-defined data, and when the intelligent equipment is matched with a UUID of the protocol and the user-defined data of the private protocol, the intelligent equipment initiates the Bluetooth data connection; when the protocol connection part receives the connection event, the authentication device transmits authentication information to enable the terminal equipment to carry out private protocol connection authentication, a private protocol layer of the Bluetooth terminal equipment starts to carry out the connection authentication of the private protocol, and Bluetooth data connection between the Bluetooth terminal equipment and the intelligent equipment is established after the authentication is passed. The Bluetooth data connection provided by the scheme can be a BLE connection and also can be a connection of an SPP protocol, so that the customized data of the private protocol comprises an SPP UUID or a BLE UUID, and when the Bluetooth data connection is the BLE connection, the customized data also needs to comprise a BLE characteristic attribute. Wherein the SPP connection and BLE connection logic unifies connection and disconnection events to establish or disconnect the SPP or BLE connection according to the UUID and associated attributes of the private protocol. In the process of connection authentication of the private protocol, the private protocol can also transmit the encryption key and the encryption mode defined by the private protocol through the part, and the like, so as to ensure the security attribute of the private protocol.
The present invention provides a preferred embodiment, the bluetooth private protocol access system further comprises at least one of the following interfaces: command interaction interface, control event interface, intelligent voice data transfer interface, OTA upgrade interface, and TWS interaction interface, which may be present simultaneously in a specific case or include one or several thereof as needed.
The present invention provides a preferred embodiment, and on the basis of the above embodiment, the bluetooth private protocol access method further includes: the intelligent device sends a data packet encapsulated according to the private protocol to the terminal device, the data packet is analyzed through a Bluetooth bottom layer protocol and is decrypted through a decryption module to obtain a plaintext of the data packet, then the data packet is unpacked according to the private protocol to obtain effective data, and the effective data is sent to different simplified interfaces; for example, the data packet of the OTA data encapsulated by the private protocol is sent to the OTA upgrading interface after being decrypted and unpacked. The terminal device obtains data information from different interfaces, packages the data according to the private protocol, encrypts the data and sends the encrypted data to the intelligent device through the Bluetooth bottom layer protocol, for example, the intelligent voice data is encrypted and then sent to the intelligent mobile phone end through the Bluetooth bottom layer protocol.
As shown in fig. 2, for the bluetooth private protocol access framework diagram provided in the embodiment of the present invention, the specific access and functions of each interface are as follows:
the command interaction interface is used for encrypting or decrypting data according to the encryption mode of the private protocol; the Bluetooth device is connected with the external intelligent device and the private protocol, when the data are decrypted, the Bluetooth device unpacks the private protocol, and when the data are encrypted, the Bluetooth device packs the private protocol and then transmits the packed private protocol to the intelligent device. The encryption and decryption modes are customized according to requirements for data encryption or data decryption, software encryption (keys and algorithm types are visible in software) can be configured, One Time Programmable (OTP) hardware encryption (keys and algorithm types are placed in OTP), multi-stage OTP hardware encryption (multi-stage encryption keys and algorithm types are placed in OTP), and various encryption modes enable the system to be more flexible and safer.
The control event interface is used for connecting events triggered by external hardware behaviors; providing an event interface, connecting events triggered by hardware behaviors, such as pause, fast forward, next song or LED light function triggered by security check of key control song playing of some proprietary protocols; some private protocols define variable key mapping, such as changing the behavior of keys through a mobile phone app, and the system provides variable key mapping, and can also store the changed key behavior in a VRAM to remember the usage habits of users. The action of the key can trigger the switching of the system working mode, such as a low-delay mode, a game mode, an environmental sound mode and the entering of intelligent voice.
The intelligent voice data transmission interface is used for triggering the MIC of the terminal equipment to acquire data and perform voice coding, and is used for setting a coding format and a data length, wherein the data length is acquired according to a private protocol data packet length; the intelligent voice data transmission interface triggers MIC data acquisition and carries out voice coding, common voice coding formats comprise PCM, ADPCM and OPUS, and the coded data are transmitted to the private protocol group package. The intelligent voice of the traditional private protocol access method only provides original voice data generally, the original data collected by MIC needs encoding and storing, then packaging and sending, the flow is complex, the system only needs to set an encoding format, the data length sent each time can, the private protocol does not need to care about encoding, and proper data length can be obtained according to the private protocol data packet length, the access method is simple and efficient, and modes of AMIC (analog MIC), DMIC (digital MIC), double MIC and the like can be configured and selected, so that the system is used for different scenes and requirements.
An OTA (Over the Air, Over the Air technology) upgrading interface for unifying OTA upgrading flow and data; some private protocols will add OTA function, each protocol OTA flow and data format has certain difference, OTA upgrade interface unifies upgrade flow and interface, in OTA upgrade interface, need to verify upgrade version number and firmware CRC value, write upgrade data in FLASH, finish upgrading and checking. An OTA upgrading interface of the system provides a set of rapid and safe OTA access method, and the specific flow is as follows: 1. the OTA upgrade needs to compare the version number and the firmware checksum and acquire the firmware length, the firmware can be upgraded only by the firmware with a low version number and a high version number, if the new firmware checksum and the old firmware checksum are consistent, the upgrade will not be performed, and the firmware length exceeds the specified range of the memory and is not upgraded; 2. comparing the block checksums once when writing one block in the memory in the upgrading process; 3. the system can realize continuous transmission by storing data transmission offset and memory addresses; 4. the system can automatically connect the mobile phone back by the Bluetooth after the upgrade is restarted and form a team by storing the Bluetooth information in the VRAM and not erasing the VRAM information after the upgrade is successful; 5. the system supports TWS OTA in a TWS forwarding mode, does not need to care about data transmission between TWS master and slave for a mobile phone end, and can upgrade a pair of TWS equipment only by one-time OTA; 6. the device does not limit the foreground and background OTA, the OTA can be carried out under the condition of playing songs or talking, and the device can change the transmission delay time according to the Bluetooth and CPU bandwidth use condition and adjust the OTA upgrading data transmission rate.
The real-time sound effect tuning interface supports real-time tuning of the double-ear device; specifically, the method may be a real-time EQ (Equalizer) tuning interface, for example, the gain and the width of seven frequency points are set, five selectable waveforms of each frequency point include peak, High Pass, Low shell, and High shell, the real-time tuning interface sets various sound effect parameters as simple and effective as possible, it is to be noted that the frequency point number and the waveform type are not limited in other embodiments, and tuning data may be forwarded to a slave device in real time by a master device in a binaural device, so as to support the binaural device to tune in real time.
A TWS (True Wireless Stereo) interactive interface for data transfer and backup between a TWS master device and a TWS slave device, wherein the TWS master device backs up connection information with a smart device, an intermediate state and the private protocol data and forwards the connection information to the TWS slave device; the intelligent equipment only can establish private protocol communication with one earphone, the other earphone needs to use the module frame to acquire Bluetooth data, and if the main earphone is suddenly turned off, a data packet of the private protocol of the main earphone needs to be backed up to the auxiliary earphone, so that the auxiliary earphone is changed into the main earphone to directly communicate with the intelligent equipment. Specifically, the smart device, for example, the mobile phone end, subjectively knows only that the TWS master device of the TWS device exists, and under some special scenes, the TWS master device is forced to lose connection with the mobile phone, such as pulling away and suddenly turning off the TWS master device, so that it is necessary to switch the TWS slave device to the TWS master device and maintain the previous state of the TWS master device with the mobile phone, the interface triggers switching between the master device and the slave device through an event that bluetooth loses connection, and the TWS master device forwards the connection information with the mobile phone, the intermediate state and the private protocol data backup to the TWS slave device, so that the TWS slave device continues to play the role of the TWS master device, and can seamlessly connect with the mobile phone.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. A bluetooth private protocol access method, comprising:
terminal equipment broadcasts Bluetooth private protocol custom data;
the intelligent equipment matches the user-defined data and initiates Bluetooth data connection;
and the terminal equipment performs private protocol connection authentication.
2. The bluetooth private protocol access method of claim 1, wherein the private protocol customization data comprises: at least one of a SPP UUID, a BLE UUID, and a BLE feature attribute.
3. The bluetooth private protocol access method of claim 1, wherein the bluetooth data connection comprises an SPP connection or a BLE connection.
4. The bluetooth private protocol access method according to claim 3, wherein the SPP connection and BLE connection logic unifies connection and disconnection events, establishing or disconnecting SPP or BLE connection according to UUID and associated attributes of the private protocol.
5. The bluetooth private protocol access method of claim 4, wherein the terminal device performing private protocol connection authentication further comprises:
and the intelligent equipment transmits the key, the encryption mode and the connection attribute of the private protocol to the terminal equipment.
6. The bluetooth private protocol access method of claim 5, wherein the method further comprises:
the intelligent device sends a data packet packaged according to the private protocol to the terminal device, the data packet is analyzed through a Bluetooth bottom layer protocol and is decrypted through a decryption module to obtain a plaintext of the data packet, then the data packet is unpacked according to the private protocol to obtain effective data, and the effective data is sent to different simplified interfaces.
7. The bluetooth private protocol access method of claim 6, wherein the method further comprises:
and the terminal equipment acquires data information from different interfaces, performs data packaging according to the private protocol, encrypts the data, and sends the encrypted data to the intelligent equipment through a Bluetooth bottom layer protocol.
8. A bluetooth private protocol access system, comprising:
the broadcasting device is used for broadcasting Bluetooth private protocol custom data, and the custom data comprises a Bluetooth address, a manufacturer ID and visibility of Bluetooth connection;
the connecting device is used for establishing the Bluetooth data connection between the intelligent equipment and the terminal equipment according to the user-defined data;
and the authentication device is used for transmitting the authentication information to ensure that the terminal equipment performs the private protocol connection authentication.
9. The bluetooth private protocol access system of claim 8, wherein the authentication information comprises: private protocol keys, encryption methods and connection properties.
10. The bluetooth private protocol access system of claim 8, wherein the system further comprises at least one of the following interfaces:
the command interaction interface is used for encrypting or decrypting data according to the encryption mode of the private protocol, and the data encryption or data decryption is software encryption, OTP hardware encryption or multi-level OTP hardware encryption;
the control event interface is used for connecting events triggered by external hardware behaviors;
the intelligent voice data transmission interface is used for triggering the MIC of the terminal equipment to acquire data and perform voice coding, and is used for setting a coding format and a data length, wherein the data length is acquired according to a private protocol data packet length;
the OTA upgrading interface is used for unifying OTA upgrading flow and data;
the real-time sound effect tuning interface is used for supporting real-time tuning of the double-ear device;
and the TWS interactive interface is used for data transmission and backup between the TWS main device and the TWS slave device, and the TWS main device backs up and forwards the connection information with the intelligent device, the intermediate state and the private protocol data to the TWS slave device.
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| CN113726895A (en) * | 2021-08-31 | 2021-11-30 | 广州艾美网络科技有限公司 | File transmission method and device and network KTV system |
| CN113726895B (en) * | 2021-08-31 | 2023-08-25 | 广州艾美网络科技有限公司 | File transmission method and device and network KTV system |
| WO2023116032A1 (en) * | 2021-12-21 | 2023-06-29 | 中兴通讯股份有限公司 | Networking method and device based on short-distance communication, and storage medium |
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