CN113395687B - Reconnection method, reconnection device, electronic equipment and storage medium - Google Patents
Reconnection method, reconnection device, electronic equipment and storage medium Download PDFInfo
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- CN113395687B CN113395687B CN202110546023.2A CN202110546023A CN113395687B CN 113395687 B CN113395687 B CN 113395687B CN 202110546023 A CN202110546023 A CN 202110546023A CN 113395687 B CN113395687 B CN 113395687B
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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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Abstract
The application discloses a loopback method, a device, an electronic device and a storage medium, wherein the method is applied to a main Bluetooth device, the main Bluetooth device comprises a first processing unit and a second processing unit, and the method comprises the following steps: when the link back broadcast meets the report condition, the second processing unit reports the link back broadcast to the first processing unit, so that the first processing unit establishes connection with the slave Bluetooth device according to the link back broadcast. The method and the device achieve the purpose of establishing the quick connection with the paired slave Bluetooth equipment by optimizing the Bluetooth scanning strategy of the master Bluetooth equipment.
Description
Technical Field
The present application relates to the field of bluetooth technology, and in particular, to a backhaul method, apparatus, electronic device, and storage medium.
Background
With the continuous updating and development of bluetooth technology, wireless communication and data exchange between terminal devices such as notebook computers, smart phones, smart televisions and related peripheral devices can be realized, for example, bluetooth function has been used as a mainstream basic function of smart televisions, and bluetooth remote controllers are also gradually replacing traditional infrared remote controllers and used as standard configurations of smart televisions. When the smart television with the bluetooth function needs to be connected with other bluetooth devices (such as a bluetooth remote controller), the two devices need to be paired first, and data exchange can be performed after the pairing is completed. Specifically, the smart tv first needs to scan the surrounding bluetooth devices (e.g., bluetooth low energy devices) that are in pairable connection; secondly, the intelligent television needs to establish a wireless link bound with the Bluetooth device; finally, after the binding connection is completed, the two devices distribute the key negotiated in the binding connection process. However, in actual operation, the two devices may be disconnected due to environmental interference, too long communication distance, or active turning off of the television by the user, and after the smart television is disconnected from the bluetooth device, the smart television needs to be connected back to the bluetooth device when the above-mentioned hindering factor is eliminated.
For example, in the prior art, the method of making a loopback with a bluetooth device requires the master bluetooth device to first scan for surrounding slave bluetooth devices that are in a loopback state; link encryption is then performed using a long term key (LTK key) distributed by both devices during the bonded connection. The defects of the prior art are as follows: the master Bluetooth device needs to firstly perform Bluetooth scanning, report all directional and non-directional broadcast packets obtained by scanning, and send a connection request packet to establish connection after scanning to the slave Bluetooth device which sends directional return broadcast; however, the bluetooth scanning performed by the master bluetooth device is a method of performing pseudorandom sequence frequency modulation on a broadcast channel, and there is a great relationship between the time of scanning the paired slave bluetooth devices and the current ambient environment conditions, which brings more unstable factors to the reconnection of the master bluetooth device, and thus the effect of establishing a fast reconnection with the paired slave bluetooth devices cannot be achieved.
Disclosure of Invention
In view of the above defects of the prior art, the present application provides a loopback method, apparatus, electronic device and storage medium, which achieve the purpose of establishing a fast loopback between a master bluetooth device and a paired slave bluetooth device by optimizing a bluetooth scanning policy of the master bluetooth device.
To achieve the above object, an embodiment of the present application provides a loopback connection method, which is applied to a master bluetooth device, where the master bluetooth device includes a first processing unit and a second processing unit, and the method includes: when a reconnection condition is met, the first processing unit generates a target list, wherein the target list comprises identification information of at least one target Bluetooth device, and the target Bluetooth device is a Bluetooth device which is successfully historically paired with the master Bluetooth device; the second processing unit judges whether the back connection broadcast of the slave Bluetooth equipment meets the reporting condition according to the target list, wherein the back connection broadcast of the slave Bluetooth equipment is obtained by the second processing unit according to the scanning of preset scanning configuration information; and when the connection request is met, the second processing unit reports the return connection broadcast to the first processing unit, so that the first processing unit establishes connection with the slave Bluetooth equipment according to the return connection broadcast.
Further, the second processing unit determines whether the backhaul broadcast from the bluetooth device satisfies the reporting condition according to the target list, including: the second processing unit judges whether the loop connection broadcast is a directional broadcast according to the label content of the loop connection broadcast; when the target address of the back connection broadcast is determined to be the address information of the main Bluetooth device, the second processing unit judges whether the target address of the back connection broadcast is the address information of the main Bluetooth device; when the target address of the back connection broadcast is determined to be the address information of the master Bluetooth device, the second processing unit judges whether the target list contains the identification information of the slave Bluetooth device; when the target list contains the identification information of the slave bluetooth device, the second processing unit determines that the backhaul broadcast meets the reporting condition.
Further, the preset scanning configuration information includes a preset scanning duty cycle, and the preset scanning duty cycle is greater than a preset threshold.
Further, before the first processing unit generates the target list, the method further includes: the first processing unit judges whether the main Bluetooth device is in a Bluetooth connection state; when the master Bluetooth device is not in a Bluetooth connection state, the first processing unit judges whether historical pairing information exists or not, wherein the historical pairing information is used for indicating one or more historical pairing devices, and the historical pairing devices are Bluetooth devices which are successfully historically paired with the master Bluetooth device; when present, the first processing unit confirms that the loopback condition is satisfied.
Further, the first processing unit generates a target list, including: the first processing unit generates the target list according to the historical pairing information, wherein the target Bluetooth device is a Bluetooth device which meets preset conditions in the one or more historical pairing devices.
Embodiments of the present application further provide a loopback apparatus, including: the first processing unit is used for generating a target list when a reconnection condition is met, wherein the target list comprises identification information of at least one target Bluetooth device, and the target Bluetooth device is a Bluetooth device which is successfully historically paired with the master Bluetooth device; the second processing unit is configured to determine whether a backhaul broadcast of the slave bluetooth device meets a reporting condition according to the target list generated by the first processing unit, where the backhaul broadcast of the slave bluetooth device is obtained by the second processing unit through scanning according to preset scanning configuration information; and when the return connection broadcast is judged to meet the reporting condition, reporting the return connection broadcast to the first processing unit, so that the first processing unit establishes connection with the slave Bluetooth equipment according to the return connection broadcast.
Further, the second processing unit is configured to determine whether the loopback broadcast is a directional broadcast according to the tag content of the loopback broadcast; when the target address of the back-connection broadcast is determined to be the address information of the main Bluetooth device, judging whether the target address of the back-connection broadcast is the address information of the main Bluetooth device; when the target address of the back connection broadcast is determined to be the address information of the master Bluetooth device, judging whether the target list contains the identification information of the slave Bluetooth device; and when the target list contains the identification information of the slave Bluetooth equipment, determining that the loopback broadcast meets the reporting condition.
Further, the preset scanning configuration information includes a preset scanning duty cycle, and the preset scanning duty cycle is greater than a preset threshold.
Further, the first processing unit is further configured to determine whether the reconnection device is in a bluetooth connection state before generating the target list; when the reconnection device is not in a Bluetooth connection state, judging whether historical pairing information exists or not, wherein the historical pairing information is used for indicating one or more historical pairing devices, and the historical pairing devices are Bluetooth devices which are successfully historically paired with the reconnection device; when present, confirming that the loop back condition is satisfied.
Further, the first processing unit is configured to generate the target list according to the historical pairing information, where the target bluetooth device is a bluetooth device that meets a preset condition in the one or more historical pairing devices.
An embodiment of the present application further provides an electronic device, including: a first processing unit, a second processing unit and a memory; the memory has stored therein program instructions; at least one of the first processing unit and the first processing unit is configured to execute the program instructions stored in the memory, so that the electronic device implements the method described in any of the above embodiments.
Embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored, which, when run on an electronic device, causes the electronic device to perform the method as described in any of the above embodiments.
The method and the device have the advantages that the master Bluetooth device scans and selectively reports the return connection broadcast sent by the slave Bluetooth device according to the historical pairing information, so that the interference of other invalid broadcast packets is avoided, and the fast return connection can be established with the paired slave Bluetooth device.
Drawings
The technical solutions and other advantages of the present application will become apparent from the following detailed description of specific embodiments of the present application when taken in conjunction with the accompanying drawings.
Fig. 1A illustrates a schematic diagram of an application scenario provided in an embodiment of the present application.
Fig. 1B is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 1C is a schematic structural diagram of a processor of the electronic device provided in fig. 1B.
Fig. 2 shows a flowchart of a bluetooth device loopback method according to an embodiment of the present application.
Fig. 3 is a schematic flow chart illustrating the process of establishing an interactive loopback between a master bluetooth device and a slave bluetooth device according to an embodiment of the present application.
Fig. 4 shows a schematic diagram of bluetooth scanning provided by an embodiment of the present application.
Fig. 5 is a flowchart illustrating another bluetooth device loopback method according to an embodiment of the present application.
Fig. 6 shows a block diagram of a loopback apparatus provided in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," "third," and the like in the description and in the claims of the present application, and in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the objects so described are interchangeable under appropriate circumstances. In the description of the present application, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover a non-exclusive inclusion. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware circuits or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.
The present application is further described in detail below with reference to the accompanying drawings and the detailed description, so that the objects, features and advantages of the present application can be more clearly understood.
For ease of understanding, the following first makes an exemplary description of an application scenario of an embodiment of the present application:
referring to fig. 1A, a schematic view of an application scenario provided in the embodiment of the present application is shown.
As shown in fig. 1A, an application scenario provided in the embodiment of the present application includes: a master bluetooth device 100 and a slave bluetooth device 200. The master bluetooth device 100 and the slave bluetooth device 200 are electronic devices with bluetooth functions, and specifically may refer to electronic devices such as a terminal device, a User Equipment (UE), a mobile device, a user terminal, and a wireless communication device with bluetooth functions. Typically, the master bluetooth device 100 in the embodiment of the present application may be a smart tv. In addition, the master bluetooth device 100 may also be a tablet computer, a laptop computer, a virtual \ hybrid \ augmented reality device, a navigation device, a mobile phone, a computing device, an in-vehicle device, a wearable device, a set-top box, or a terminal device in other future communication systems, which is not limited in this embodiment of the present application. The slave bluetooth device 200 includes, but is not limited to, a smart phone, a bluetooth speaker, a bluetooth remote controller, a bluetooth headset, and the like, which is not limited in this embodiment.
The loopback method provided in the embodiment of the present application is applied to an electronic device 300, and as shown in fig. 1B, the electronic device 300 is a schematic structural diagram of the electronic device 300 provided in the embodiment of the present application, and the electronic device 300 specifically refers to the master bluetooth device 100 in fig. 1A. Fig. 1B is a schematic structural diagram of a simplified electronic device 300 according to an embodiment of the present disclosure. For convenience of explanation, only the parts related to the present application are shown, and specific technical details are not disclosed, so that reference may be made to the method parts of the embodiments of the present application hereinafter, and the present application should not be construed as being limited thereto.
Referring to fig. 1B, an electronic device 300 provided by the embodiment of the present application includes a processor 10, a memory 20, an interface circuit 30, a power manager 40, and a communication device 50. The processor 10 may be coupled to the memory 20, the interface circuit 30, the power manager 40, and the communication device 50, and may be connected to at least one bus or other interface. It will be appreciated that the interface circuit 30 may be an input/output interface, and may be used to connect the electronic device to other devices, such as other chips, circuit boards, external memories, peripherals or sensors.
The power manager 40 provides the processor 10, the memory 20, and the interface circuit 30 with a power voltage required for operation, and may further provide clocks required for operation of the processor 10, the memory 20, and the interface circuit 30. Alternatively, power manager 40 may convert energy from a battery or from a wall power source to the voltages required for operation of processor 10, memory 20, and interface circuits 30. Alternatively, the power manager 40 may generate the clock required for the processor 10, the memory 20 and the interface circuit 30 to operate by using a basic clock, such as a crystal clock, which is not limited in this embodiment. Alternatively, the power manager 40 includes a power management chip including circuits such as a voltage generator and a clock generator.
The communication device 50 is used for implementing external communication functions of the electronic device 300, including but not limited to wired communication and wireless communication. The wireless communication includes, but is not limited to, short-range wireless communication including bluetooth and Bluetooth Low Energy (BLE) communication, and cellular wireless communication.
The processor 10 may also be implemented as a processing chip, a single board, a processing module, a processing device, or the like. The processor 10 is a control center of the electronic device 300, connects various parts of the entire electronic device 300 using various interfaces and lines, executes various functional applications of the electronic device 300 and processes data by running software programs or software modules stored in the memory 20 and calling data stored in the memory 20, thereby monitoring the electronic device 300 as a whole.
The memory 20 may be used to store software programs and modules. The memory 20 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function, and the like, and may further include other types of drivers, such as drivers related to communication, image, video, voice, or artificial intelligence; the storage data area may store data created according to use of the electronic device, etc., and may also store other user data, security data, system data, etc. Further, the memory 20 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device. For ease of illustration, only one memory is shown in FIG. 1B. In an actual electronic device product, there may be one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.
In this embodiment, the processor 10 of the electronic device 300 includes: a first processing unit 101 and a second processing unit 102. Fig. 1C is a schematic structural diagram of a processor 10 according to an embodiment of the present disclosure. Referring specifically to fig. 1B, the first processing unit 101, the second processing unit 102, the memory 20 and the interface circuit 30 are coupled to each other. Specifically, the memory 20 is used for instructions executed by at least one of the first processing unit 101 or the second processing unit 102, input data required by at least one of the first processing unit 101 or the second processing unit 102 to execute the instructions, or data generated after at least one of the first processing unit 101 or the second processing unit 102 executes the instructions, including but not limited to final data or intermediate data. Optionally, the memory 20 may be provided separately from the processor 10 similar to fig. 1B, or may be integrated with at least one of the first processing unit 101 or the second processing unit 102, which is not limited in this embodiment of the application. At least one of the first processing unit 101 and the second processing unit 102 may enable the electronic device 300 (e.g., a master bluetooth device) to implement the following technical solution in any one of the embodiments of fig. 2, 5 and 6 by executing the program instructions stored in the memory 20.
It should be noted that, in the embodiment of the present application, the processor 10 may include at least one of the following: one or more Central Processing Units (CPUs) or one or more Micro Control Units (MCUs). Other general purpose processors may optionally be included, such as, for example, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. The first processing unit 101 and the second processing unit 102 may be logical units functionally divided by the processor 10.
In the embodiment of the present application, the first processing unit 101 and the second processing unit 102 included in the processor 10 may also be physical devices that are disposed independently of each other. When the first processing unit 101 and the second processing unit 102 are independently provided physical devices, the first processing unit 101 and the second processing unit 102 are connected by a USB bus. The first processing unit 101 in this embodiment is a main control chip of the main bluetooth device 100, i.e. a computing security system operation and control core. The first processing unit 101 may comprise at least one of: one or more Central Processing Units (CPUs) or one or more Micro Control Units (MCUs). Other general purpose processors may optionally be included, such as a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, transistor logic, hardware components, or any combination thereof. The second processing unit 102 is a module, a chip, a microprocessor or a single chip, etc. dedicated to processing part of bluetooth related functions (as described in the embodiments below). The embodiment of the present application does not limit the specific form of the first processing unit 101 and the second processing unit 102 included in the processor 10.
Based on the application scenario and the master bluetooth device 100 shown in fig. 1A to 1C, the method for loopback provided by the embodiment of the present application is described next. Fig. 2 shows a flowchart of a backhaul method provided in an embodiment of the present application, in which in this embodiment, the master bluetooth device is a device that actively sends a bluetooth connection request, and the slave bluetooth device is a device that receives a bluetooth connection request.
The reconnection method specifically comprises the following steps:
and step 30, when the answer is satisfied, the second processing unit reports the loopback broadcast to the first processing unit, so that the first processing unit establishes connection with the slave bluetooth device according to the loopback broadcast.
Specifically, in step 10, after the main bluetooth device is normally powered on or is switched from the standby state to the normal operating state, the first processing unit of the main bluetooth device starts the loopback operation and determines whether the loopback condition is satisfied. Wherein confirming whether the tieback condition is satisfied comprises: the first processing unit judges whether the master Bluetooth device is in a Bluetooth connection state; when the master Bluetooth device is not in a Bluetooth connection state, the first processing unit judges whether historical pairing information exists or not, wherein the historical pairing information is used for indicating one or more historical pairing devices, and the historical pairing devices are Bluetooth devices (namely target Bluetooth devices) which are successfully historically paired with the master Bluetooth device; when present, the first processing unit confirms that the loopback condition is satisfied.
Specifically, the first processing unit determines whether the bluetooth device is currently in a bluetooth connection state, and if the first processing unit detects that the bluetooth device is currently connected with the at least one bluetooth device, the first processing unit exits from the loopback operation and does not perform loopback scanning. The first processing unit can identify the type of the connected Bluetooth device through a corresponding Application Program Interface (API), so as to judge whether the connection is established with the Bluetooth device of a specific target type currently. When the first processing unit determines that the first processing unit does not establish bluetooth connection with any bluetooth device currently, if the first processing unit detects that the number of entries of the currently stored historical pairing information is zero, that is, there is no bluetooth device with any historical pairing success, the master bluetooth device also exits from the loopback operation, and does not perform loopback scanning.
In this embodiment, history pairing information of the bluetooth device that has been history paired with the master bluetooth device is stored in a memory. The specific process is as follows, the master Bluetooth device scans and receives the pairing broadcast from the target Bluetooth device; and after receiving the pairing broadcast, the master Bluetooth device establishes Bluetooth connection with a target Bluetooth device which sends the pairing broadcast, and stores pairing information of the target Bluetooth device in a paired record table of a memory. In one embodiment, the memory may store pairing information of a plurality of target bluetooth devices, so that the master bluetooth device invokes the paired record table for a fast loopback operation. In this embodiment, the pairing information at least includes one or more identification information capable of identifying the target bluetooth device, for example, address information of the target bluetooth device, that is, a media access control address (MAC address).
Before the pairing information of the target Bluetooth device is stored in the paired record table, the first processing unit is used for judging whether the number of items of the pairing information in the current paired record table is greater than a preset threshold value; if the current pairing information is not greater than the preset threshold value, storing the pairing information of the target Bluetooth equipment to be stored in the paired record table; and if the matching information is larger than the preset threshold value, removing part of the stored matching information according to a preset rule, and then storing the matching information of the target Bluetooth equipment to be stored in the matched record table. Wherein removing the stored partial pairing information according to the preset rule comprises: the first processing unit removes the stored first pairing information, and stores the pairing information of the target Bluetooth device to be stored currently as the last pairing information in the paired record table. In other embodiments, the preset rule may also be another rule for removing pairing information, which is not limited herein.
And when the first processing unit of the main Bluetooth device confirms that the back connection condition is met, the first processing unit generates a target list according to the stored paired record table. In this embodiment, the target list may be a white list. The white list includes identification information, e.g., address information, of at least one historically paired target bluetooth device. In this embodiment, the pairing information in the paired record table needs to be added to the white list only when the first processing unit confirms that the loopback operation needs to be performed. This can prevent pairing information (i.e., invalid information) of the bluetooth device that does not need to be connected back from being added to the white list and retain valid information of the bluetooth device that needs to be connected back, to save resources and facilitate quick response. For example, for a bluetooth device used for testing, it is usually manually unpaired within a short time (e.g., five minutes later), in which case its pairing information does not need to be added to the white list, thereby occupying storage resources.
In step 20, the second processing unit determines whether the backhaul broadcast of the slave bluetooth device meets the reporting condition according to the target list, where the backhaul broadcast of the slave bluetooth device is obtained by the second processing unit through scanning according to preset scanning configuration information.
Fig. 3 shows a flowchart of establishing an interactive loopback between a master bluetooth device and a slave bluetooth device according to a first embodiment of the present application. As shown in fig. 3, after the first processing unit of the master bluetooth device generates the target list (i.e., white list) according to the foregoing step 10, the second processing unit receives a bluetooth scan start instruction sent by the first processing unit, where the instruction includes an instruction to instruct the second processing unit to scan a request for back-connection broadcast according to preset scan configuration information. And the second processing unit of the master Bluetooth device drives the antenna device on the master Bluetooth device to execute scanning, and meanwhile, the slave Bluetooth device sends back connection broadcasting according to a preset triggering rule. And when the second processing unit of the master Bluetooth device judges that the scanning is finished after the return connection broadcasting meeting the requirement is scanned, the slave Bluetooth device sends the return connection broadcasting to be finished.
The second processing unit of the master bluetooth device scans the request reconnection broadcast according to the preset scanning configuration information including setting a preset scanning duty ratio for the reconnection operation, the preset scanning duty ratio being greater than a preset threshold value, thereby increasing the scanning time. Wherein the scan duty cycle refers to the ratio of the scan time to the sum of the scan time and the scan interval. Fig. 4 shows a schematic diagram of bluetooth scanning provided by an embodiment of the present application. As shown in fig. 4, the master bluetooth device scans the backhaul broadcast transmitted by the slave bluetooth device on channels 37, 38, and 39 by polling. If the preset threshold is 20%, the master bluetooth device may set the scanning time and the scanning interval to be 20ms and 60ms, respectively, so that the preset scanning duty ratio is 25%, which is greater than 20%, that is, greater than the preset threshold.
At the slave bluetooth device, it is first determined whether pairing information is currently stored. In one embodiment, the slave bluetooth device may store pairing information of a plurality of bluetooth devices with which pairing is successful; in another embodiment, the slave bluetooth device may store pairing information only with the last bluetooth device with which pairing was successful, so as not to cause operational confusion. Then, when the slave bluetooth device determines that the pairing information exists, the slave bluetooth device sends out a loop back broadcast according to a preset trigger rule, wherein the preset trigger rule can comprise sending of the loop back broadcast triggered by pressing any key on the slave bluetooth device, and the loop back broadcast is directed to the last bluetooth device successfully paired with the slave bluetooth device.
The loopback broadcast in this embodiment is set to a directional broadcast for the loopback operation. Specifically, the loopback broadcast includes a tag, a target address, and a transmission address, unlike a general broadcast that does not include a target address. The tag identifies the nature of the backhaul broadcast, i.e., directed broadcast or non-directed broadcast; the target address sets the address of a main Bluetooth device aimed by the back-connection broadcast; and the transmission address sets the address of the slave bluetooth device that transmits the burst broadcast packet back. The broadcast interval for sending back a burst broadcast from a bluetooth device may be shortened to 3.75ms; and the broadcast interval of the normal broadcast packet is a minimum of 20ms. If the backhaul broadcast is randomly selected to be broadcast in the channels 37, 38 and 39 at a broadcast interval of 3.75ms, the longer the scanning time of the master bluetooth device (e.g., the preset scanning duty ratio is 25%, and the scanning time is 20 ms), the greater the probability that the master bluetooth device will scan the backhaul broadcast transmitted by the slave bluetooth device within a certain time, so that the speed and efficiency of the backhaul can be increased.
In this embodiment, the determining, by the second processing unit, whether the backhaul broadcast of the bluetooth device satisfies the reporting condition according to the white list further includes the following steps of: when the second processing unit of the master Bluetooth device scans and acquires a loop broadcast packet sent by a slave Bluetooth device according to preset scanning configuration information, the second processing unit of the master Bluetooth device analyzes the loop broadcast packet so as to judge whether the loop broadcast packet is a directional broadcast packet or not according to the label content of the loop broadcast packet; after determining that the target address of the loopback broadcast is the address information of the main Bluetooth device, the second processing unit judges whether the target address of the loopback broadcast is the address information of the main Bluetooth device, namely whether the target address is the same as the address information of the main Bluetooth device; when the determination is the same, finally the second processing unit determines whether the white list contains the identification information of the slave bluetooth device, that is, whether the transmission address is the same as the address information of the history paired target bluetooth device stored in at least one white list. And when the second processing unit judges that the white list contains the identification information of the slave Bluetooth equipment, the second processing unit determines that the return connection broadcast meets the reporting condition. It should be understood that the same or different alignment is well known in the art and will not be described herein. In addition, when the received loopback broadcast packet is an undirected broadcast packet, the target address in the loopback broadcast packet is different from the address information of the main bluetooth device, or the sending address is different from the address information of any history paired target bluetooth devices stored in the white list, the second processing unit of the main bluetooth device discards the loopback broadcast packet and rescans to obtain a new loopback broadcast packet.
In step 30, when the second processing unit determines that the obtained backhaul broadcast packet satisfies the reporting condition, the second processing unit reports the backhaul broadcast to the first processing unit, so that the first processing unit establishes a connection with the slave bluetooth device according to the backhaul broadcast. Because the master Bluetooth device only reports the back-connection broadcast sent by the specific slave Bluetooth device, the content interaction of other invalid broadcast packets can be avoided, and the aim of quick response is fulfilled.
In an embodiment, after the second processing unit of the master bluetooth device determines that the scanned and acquired backhaul broadcast packet is a backhaul broadcast packet that does not meet the reporting requirement and discards the backhaul broadcast packet, the second processing unit may continue to scan and acquire a next backhaul broadcast packet and perform screening until the backhaul success. In another embodiment, the master bluetooth device performs scanning within a preset time range and acquires a next backhaul broadcast packet, and when a satisfactory backhaul broadcast packet has not been acquired after the preset time (i.e., after scanning timeout), the master bluetooth device may trigger a binding connection in other manners, for example, designate a slave bluetooth device through an infrared signal connection, so as not to affect the use of the device by the user.
When the address information of the slave bluetooth device is deleted by the master bluetooth device, that is, the address information of the slave bluetooth device is inconsistent with the address information in the stored white list, the slave bluetooth device fails to continue to perform pairing connection with the master bluetooth device through other triggering methods.
Fig. 5 is a flowchart illustrating another bluetooth device loopback method according to an embodiment of the present application. In this embodiment, the master bluetooth device is an intelligent television, the slave bluetooth device is a bluetooth low energy remote controller with different MAC addresses, which is successfully paired with the intelligent television in history, the first processing unit of the master bluetooth device is a main control chip of the intelligent television, and the second processing unit of the master bluetooth device is a bluetooth module chip connected to a USB bus of the main control chip of the intelligent television. The Bluetooth module receives the feedback broadcast which is sent by the Bluetooth remote controller and accords with the report condition through the antenna according to preset scanning configuration information used for the feedback operation, and reports the feedback broadcast to the main control chip system through USB bus communication, so that the intelligent television and the Bluetooth remote controller are quickly connected.
It should be understood that the relevant features in the embodiments shown in fig. 2 and 5 can be referred to and referred to each other, and are not described in detail here.
Specifically, another bluetooth device loopback method provided in the embodiment of the present application includes the following steps:
in step 100, the smart tv starts a loop operation after being turned on, and determines whether a loop condition is satisfied.
In step 200, the main control chip of the smart television judges whether a bluetooth connection is currently established with at least one bluetooth remote controller. If the bluetooth connection with at least one bluetooth remote controller is established currently, executing step 210, and exiting the connection-back operation; if no bluetooth connection is established with any bluetooth remote controller, the process continues to step 300.
In step 300, the main control chip of the smart television retrieves whether pairing information of the bluetooth remote controller is currently stored. If the pairing information of the Bluetooth remote controller is not stored currently, executing step 310, and exiting the connection-back operation; if the pairing information of the bluetooth remote controller is currently stored, it is confirmed that the reconnection condition is satisfied and the step 400 is continuously performed.
In step 400, the main control chip of the smart television adds the stored pairing information of the bluetooth remote controller to a white list. In this embodiment, the smart television and the bluetooth module each include a storage device, and the smart television may write an address in the generated white list into a register in the bluetooth module of the smart television. In another embodiment, the bluetooth module and the main control chip of the smart television set may share the same storage device, and the bluetooth module may call the white list data in the storage device as needed.
In step 500, after receiving a scanning start instruction sent by a main control chip of the smart television, the bluetooth module scans and acquires a back connection broadcast sent by a bluetooth remote controller according to preset scanning configuration information. In this embodiment, the preset scan configuration information includes a preset scan duty ratio, which is set to be greater than 20%.
In step 600, the bluetooth module determines whether a reply broadcast is received. That is, the bluetooth module determines whether the backhaul broadcast packet obtained by scanning is a backhaul broadcast packet meeting a reporting requirement, where the backhaul broadcast packet meeting the reporting requirement includes backhaul broadcast packets meeting the following requirements: the loopback broadcast packet is identified as a directional broadcast packet; the feedback broadcast comprises address information of the intelligent television; and the white list comprises the address information of the Bluetooth remote controller for sending the directional broadcast packet. If the bluetooth module determines that the scanned backhaul broadcast packet is not a backhaul broadcast packet satisfying all the above requirements, the step 600 is executed again to perform scanning; if the bluetooth module judges that the scanned loop-back broadcast packet is the loop-back broadcast packet meeting the requirements, step 700 is executed, the bluetooth module reports the loop-back broadcast packet, and the main control chip of the intelligent television instructs the bluetooth module to stop loop-back scanning and instructs the bluetooth module to send a connection request packet to a bluetooth remote controller sending the loop-back broadcast packet so as to establish connection.
Fig. 6 shows a block diagram of the loop back device 1 provided in the embodiment of the present application. It should be understood that the relevant features in the embodiments described in fig. 6 and fig. 2 and 5 can be referred to and referred to each other, and are not described in detail here.
As shown in fig. 6, the reconnection device 1 includes a first processing unit 2, configured to generate a target list when a reconnection condition is met, where the target list includes identification information of at least one target bluetooth device, and the target bluetooth device is a bluetooth device that has been successfully paired with a master bluetooth device in history; a second processing unit 3, configured to determine whether a loopback broadcast of the slave bluetooth device meets a reporting condition according to the target list generated by the first processing unit, where the loopback broadcast of the slave bluetooth device is obtained by the second processing unit through scanning according to preset scanning configuration information; and when the return connection broadcast is judged to meet the reporting condition, reporting the return connection broadcast to the first processing unit, so that the first processing unit establishes connection with the slave Bluetooth equipment according to the return connection broadcast.
Wherein the second processing unit 3 is configured to determine whether the loopback broadcast is a directional broadcast according to the tag content of the loopback broadcast; when the target address of the back-connection broadcast is determined to be the address information of the main Bluetooth device, judging whether the target address of the back-connection broadcast is the address information of the main Bluetooth device; when the target address of the back connection broadcast is determined to be the address information of the master Bluetooth device, judging whether the target list contains the identification information of the slave Bluetooth device; and when the target list contains the identification information of the slave Bluetooth equipment, determining that the loopback broadcast meets the reporting condition. The preset scanning configuration information comprises a preset scanning duty ratio, and the preset scanning duty ratio is larger than a preset threshold value.
The first processing unit 1 is further configured to determine whether the reconnection device is in a bluetooth connection state before generating the target list; when the reconnection device is not in a Bluetooth connection state, judging whether historical pairing information exists or not, wherein the historical pairing information is used for indicating one or more historical pairing devices, and the historical pairing devices are Bluetooth devices which are successfully historically paired with the reconnection device; when present, confirming that the loop back condition is satisfied.
The first processing unit 1 is further configured to generate the target list according to the historical pairing information, where the target bluetooth device is a bluetooth device that meets a preset condition in the one or more historical pairing devices.
In another embodiment, there is provided an electronic device including: a first processing unit, a second processing unit and a memory; the memory has stored therein program instructions; at least one of the first processing unit and the first processing unit is configured to execute program instructions stored in the memory to cause the electronic device to implement the following steps of a loopback method for a master Bluetooth device: when a reconnection condition is met, a first processing unit of the master Bluetooth device generates a target list, wherein the target list comprises identification information of at least one target Bluetooth device, and the target Bluetooth device is a Bluetooth device which is successfully historically paired with the master Bluetooth device; the second processing unit of the master Bluetooth device judges whether the back connection broadcast of the slave Bluetooth device meets the reporting condition according to the target list, wherein the back connection broadcast of the slave Bluetooth device is obtained by the second processing unit through scanning according to preset scanning configuration information; and when the connection request is met, the second processing unit reports the return connection broadcast to the first processing unit, so that the first processing unit establishes connection with the slave Bluetooth equipment according to the return connection broadcast.
In another embodiment, a computer-readable storage medium is provided, having stored thereon a computer program which, when run on an electronic device, causes the electronic device to perform the steps of the method of reconnecting: when a reconnection condition is met, a first processing unit of the electronic equipment generates a target list, wherein the target list comprises identification information of at least one target Bluetooth device, and the target Bluetooth device is a Bluetooth device which is successfully historically paired with the main Bluetooth device; the second processing unit of the electronic device judges whether the back connection broadcast of the slave bluetooth device meets the reporting condition according to the target list, wherein the back connection broadcast of the slave bluetooth device is obtained by the second processing unit according to preset scanning configuration information in a scanning mode; and when the connection request is met, the second processing unit reports the return connection broadcast to the first processing unit so that the first processing unit establishes connection with the slave Bluetooth device according to the return connection broadcast. The specific limitations and implementations of the above steps can refer to the embodiments described above with reference to fig. 1A to 6, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by hardware instructions of a computer program, which may be stored in a non-volatile computer-readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), rambus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The method, the apparatus, the electronic device, and the storage medium for loop back connection provided in the embodiments of the present application are described in detail above, and a specific example is applied in the present application to explain the principle and the implementation of the present application, and the description of the above embodiments is only used to help understand the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A loopback method, wherein the method is applied to a master bluetooth device, wherein the master bluetooth device comprises a first processing unit and a second processing unit, and wherein the method comprises:
before the first processing unit generates the target list, the method further includes:
the first processing unit judges whether the main Bluetooth device is in a Bluetooth connection state;
when the master Bluetooth device is not in a Bluetooth connection state, the first processing unit judges whether historical pairing information exists or not, wherein the historical pairing information is used for indicating one or more historical pairing devices, and the historical pairing devices are Bluetooth devices which are successfully historically paired with the master Bluetooth device;
when present, the first processing unit confirms that a loopback condition is satisfied;
when a reconnection condition is met, the first processing unit generates a target list, the target list comprises identification information of at least one target Bluetooth device, and the target Bluetooth device is a Bluetooth device which is successfully historically paired with the main Bluetooth device;
the second processing unit judges whether the back connection broadcast of the slave Bluetooth equipment meets the reporting condition according to the target list, wherein the back connection broadcast of the slave Bluetooth equipment is obtained by the second processing unit according to preset scanning configuration information in a scanning mode; and
and when the connection request is met, the second processing unit reports the return connection broadcast to the first processing unit, so that the first processing unit establishes connection with the slave Bluetooth equipment according to the return connection broadcast.
2. The backhaul method of claim 1, wherein the determining, by the second processing unit, whether the backhaul broadcast from the bluetooth device satisfies the reporting condition according to the target list comprises:
the second processing unit judges whether the back connection broadcast is a directional broadcast according to the label content of the back connection broadcast;
when the target address of the back connection broadcast is determined to be the address information of the main Bluetooth device, the second processing unit judges whether the target address of the back connection broadcast is the address information of the main Bluetooth device; and
when the target address of the loop-back broadcast is determined to be the address information of the master Bluetooth device, the second processing unit judges whether the target list contains the identification information of the slave Bluetooth device;
when the target list contains the identification information of the slave bluetooth device, the second processing unit determines that the backhaul broadcast meets the reporting condition.
3. The loopback method as recited in claim 1, wherein the preset scan configuration information comprises a preset scan duty cycle, the preset scan duty cycle being greater than a preset threshold.
4. The loopback method as recited in claim 1, wherein the first processing unit generates a list of targets comprising:
the first processing unit generates the target list according to the historical pairing information, wherein the target Bluetooth device is a Bluetooth device which meets preset conditions in the one or more historical pairing devices.
5. A reconnect device, comprising:
the first processing unit is used for generating a target list when a reconnection condition is met, wherein the target list comprises identification information of at least one target Bluetooth device, and the target Bluetooth device is a Bluetooth device which is successfully historically paired with a main Bluetooth device; and
the first processing unit is further configured to determine whether the reconnection device is in a bluetooth connection state before generating the target list; when the reconnection device is not in a Bluetooth connection state, judging whether historical pairing information exists or not, wherein the historical pairing information is used for indicating one or more historical pairing devices, and the historical pairing devices are Bluetooth devices which are successfully historically paired with the reconnection device; when present, confirming that the loop back condition is satisfied;
the second processing unit is configured to determine whether a backhaul broadcast of the slave bluetooth device meets a reporting condition according to the target list generated by the first processing unit, where the backhaul broadcast of the slave bluetooth device is obtained by the second processing unit through scanning according to preset scanning configuration information; and when the return connection broadcast is judged to meet the reporting condition, reporting the return connection broadcast to the first processing unit, so that the first processing unit establishes connection with the slave Bluetooth equipment according to the return connection broadcast.
6. The apparatus of claim 5,
the second processing unit is used for judging whether the back-connection broadcast is a directional broadcast according to the label content of the back-connection broadcast; when the target address of the back-connection broadcast is determined to be the address information of the main Bluetooth device, judging whether the target address of the back-connection broadcast is the address information of the main Bluetooth device; when the target address of the back connection broadcast is determined to be the address information of the master Bluetooth device, judging whether the target list contains the identification information of the slave Bluetooth device; and when the target list contains the identification information of the slave Bluetooth equipment, determining that the return connection broadcast meets the reporting condition.
7. The apparatus of claim 6, wherein the preset scan configuration information comprises a preset scan duty cycle, and wherein the preset scan duty cycle is greater than a preset threshold.
8. The apparatus of claim 5,
the first processing unit is configured to generate the target list according to the historical pairing information, where the target bluetooth device is a bluetooth device that meets a preset condition in the one or more historical pairing devices.
9. An electronic device, characterized in that the electronic device comprises: a first processing unit, a second processing unit and a memory;
the memory has stored therein program instructions;
at least one of the first processing unit and the first processing unit is configured to execute program instructions stored in the memory to cause the electronic device to implement the method of any of claims 1-4.
10. A computer-readable storage medium, having stored thereon a computer program, characterized in that, when the computer program is run on an electronic device, it causes the electronic device to execute the method according to any of claims 1 to 4.
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| CN113810884B (en) * | 2021-09-15 | 2022-08-09 | 荣耀终端有限公司 | Electronic equipment connection method, electronic equipment and medium |
| CN113747408A (en) * | 2021-09-17 | 2021-12-03 | 展讯通信（上海）有限公司 | Bluetooth connection method, device, storage medium and electronic equipment |
| CN114158025B (en) * | 2022-02-09 | 2022-06-14 | 荣耀终端有限公司 | Device reconnection method and related device |
| CN114390500A (en) * | 2022-02-14 | 2022-04-22 | Oppo广东移动通信有限公司 | Device connection method, device and storage medium |
| CN114745580A (en) * | 2022-04-08 | 2022-07-12 | 海信视像科技股份有限公司 | Display device, control device and communication back connection method |
| CN115119336B (en) * | 2022-08-23 | 2023-01-13 | 荣耀终端有限公司 | Earphone connection system, earphone connection method, earphone, electronic device and readable storage medium |
| CN116321163B (en) * | 2023-05-17 | 2023-08-15 | 深圳开鸿数字产业发展有限公司 | Control method of Bluetooth communication system, bluetooth device and readable storage medium |
| CN116527974A (en) * | 2023-07-03 | 2023-08-01 | 深圳市华曦达科技股份有限公司 | Bluetooth remote controller connection method, device and system |
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