CN114640980A - Bluetooth communication method and system - Google Patents
Bluetooth communication method and system Download PDFInfo
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- CN114640980A CN114640980A CN202210423010.0A CN202210423010A CN114640980A CN 114640980 A CN114640980 A CN 114640980A CN 202210423010 A CN202210423010 A CN 202210423010A CN 114640980 A CN114640980 A CN 114640980A
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- 230000004044 response Effects 0.000 claims abstract description 60
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims description 14
- 230000009471 action Effects 0.000 description 3
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- 230000007613 environmental effect Effects 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/19—Connection re-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W8/24—Transfer of terminal data
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Abstract
The invention relates to the field of Bluetooth communication, in particular to a Bluetooth communication method and a Bluetooth communication system, which solve the problem that two paired Bluetooth devices communicate before and after realizing loop connection. The technical scheme comprises the following steps: after the Bluetooth connection is disconnected, the terminal controller sends a back connection broadcast message, the terminal sends a scanning request after receiving the back connection broadcast message, the terminal controller receives the scanning request and carries out white list detection, and if the white list detection is passed, a scanning response is replied; if the white list scanning is not carried out, directly replying a scanning response, sending a connection request after the terminal receives the scanning response, if the connection is successful, the reconnection is successful, and carrying out key value transmission on a data channel after the reconnection is successful; otherwise, analyzing the received scanning response, and if the key number is inconsistent with the corresponding number in the terminal, uploading the key value to the terminal system to realize the corresponding key operation. The invention is suitable for the Bluetooth communication between the terminal and the corresponding terminal controller.
Description
Technical Field
The invention relates to the field of Bluetooth communication, in particular to a Bluetooth communication method and a Bluetooth communication system.
Background
The traditional communication between bluetooth devices is performed based on pairing and connection, and after the connection is established, the rapid connection back is realized by storing a Mac (Medium/Media Access Control) address of the opposite device. However, in practical applications, the connection information of the opposite end stored by one party is lost, or the connection between the two parties cannot be established all the time due to environmental interference, which greatly affects communication and causes data loss.
Disclosure of Invention
The invention aims to provide a Bluetooth communication method and a Bluetooth communication system, which solve the communication problem of two paired Bluetooth devices in the process of realizing reconnection, can realize information interaction no matter whether the Bluetooth is successfully reconnected or not, and improve the communication stability.
The invention adopts the following technical scheme to realize the aim, and the Bluetooth communication method is applied to the communication between the terminal and the corresponding terminal controller and comprises the following steps:
step 1, the terminal and a corresponding terminal controller finish Bluetooth pairing, and respectively store Mac addresses and key information of the opposite side;
step 2, after the Bluetooth connection is disconnected, the terminal controller sends a back connection broadcast message;
step 3, after receiving the back connection broadcast message, the terminal judges whether the back connection broadcast message accords with the self-defined rule of the terminal, if so, a scanning request is sent out, and the scanning request carries the Bluetooth Mac addresses of the two parties;
step 4, the pairing information stored in the terminal controller is judged, if the pairing information stored in the terminal controller is not lost, the Bluetooth Mac address matched with the terminal controller is used as a white list, and the step 5 is carried out; otherwise, not setting a white list, and entering the step 6;
step 5, the terminal controller receives the scanning request and carries out white list detection, if the white list detection is passed, scanning response is replied, and the step 7 is carried out, wherein the replied scanning response comprises key values, keys, Mac addresses and number information of the keys of the terminal controller;
step 6, the terminal controller directly replies a scanning response after receiving the scanning request, and the step 7 is carried out;
step 7, after receiving the scanning response, if the terminal can send a connection request according to a normal flow and the connection is successful, the reconnection is successful, and after the reconnection is successful, key value transmission of the keys is carried out on a data channel, and the flow is ended; otherwise, entering a step 8;
step 8, the terminal analyzes the received scanning response, judges the Mac address of the scanning response, and enters step 9 if the Mac address of the scanning response is the stored Bluetooth Mac address of the pairing terminal controller;
and 9, analyzing the key number and the key value carried in the scanning response, if the key number is inconsistent with the corresponding number in the terminal, uploading the key value to a terminal system to realize corresponding key operation, and ending the process.
Further, in step 2, the loopback broadcast message includes a terminal controller signal and private protocol information, where the loopback broadcast message includes a custom rule.
Further, the method further comprises: in step 7, before the completion of the reconnection, if new key information is transmitted from the terminal controller to the terminal by broadcasting, the process proceeds to step 3.
The Bluetooth communication system is used for realizing the Bluetooth communication method and comprises a terminal and a terminal controller corresponding to the terminal, wherein the terminal and the corresponding terminal controller finish Bluetooth pairing, and the terminal and the corresponding terminal controller respectively store the Mac address and the key information of the other side; after the Bluetooth connection is disconnected, the terminal controller sends a back connection broadcast message; after receiving the back connection broadcast message, the terminal judges whether the back connection broadcast message accords with the self-defined rule of the terminal, if so, a scanning request is sent, and the scanning request carries Bluetooth Mac addresses of both sides; judging pairing information stored by a terminal controller, if the pairing information stored by the terminal controller is not lost, using a Bluetooth Mac address which is paired as a white list, receiving a scanning request by the terminal controller and detecting the white list, and if the pairing information passes the white list detection, replying a scanning response, wherein the replying scanning response comprises key values of keys of the terminal controller, the Mac address and the number information of the keys; otherwise, the white list is not set, and the terminal controller directly replies a scanning response after receiving the scanning request; after receiving the scanning response, if the terminal can send out a connection request according to a normal flow and the connection is successful, the reconnection is successful, and key value transmission of the keys is carried out in a data channel after the reconnection is successful; otherwise, analyzing the received scanning response, judging the Mac address of the scanning response, if the Mac address of the scanning response is the stored Bluetooth Mac address of the paired terminal controller, analyzing the key number and the key value carried in the scanning response, and if the key number is not consistent with the corresponding number in the terminal, uploading the key value to the terminal system to realize the corresponding key operation.
According to the invention, after the Bluetooth connection is successful, key value transmission is carried out on a data channel, and key value information of a terminal controller is transmitted to a terminal, so that the terminal is controlled; in the process of reconnection abnormity, the terminal firstly analyzes the received scanning response, judges the Mac address of the scanning response, if the Mac address of the scanning response is the stored Bluetooth Mac address of the paired terminal controller, analyzes the key number and the key value carried in the scanning response, and if the key number is inconsistent with the corresponding number in the terminal, uploads the key value to the terminal system to realize the corresponding key operation, completes the transmission of the key information of the terminal controller, and realizes the control of the terminal; therefore, no matter whether the Bluetooth is back-connected or not, the information interaction between the terminal and the corresponding terminal controller can be realized, and the communication stability is improved.
Drawings
Fig. 1 is a flowchart of bluetooth communication according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, 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 invention.
The invention discloses a Bluetooth communication method, which is applied to the communication between a terminal and a corresponding terminal controller, and comprises the following steps:
step 1, the terminal and a corresponding terminal controller finish Bluetooth pairing, and respectively store Mac addresses and key information of the opposite side;
step 2, after the Bluetooth connection is disconnected, the terminal controller sends a back connection broadcast message;
step 3, after receiving the back connection broadcast message, the terminal judges whether the back connection broadcast message accords with the self-defined rule of the terminal, if so, a scanning request is sent out, and the scanning request carries the Bluetooth Mac addresses of the two parties;
step 4, the pairing information stored in the terminal controller is judged, if the pairing information stored in the terminal controller is not lost, the Bluetooth Mac address matched with the terminal controller is used as a white list, and the step 5 is carried out; otherwise, not setting a white list, and entering the step 6;
step 5, the terminal controller receives the scanning request and carries out white list detection, if the white list detection is passed, a scanning response is replied, and the step 7 is carried out, wherein the replied scanning response comprises key values, keys, Mac addresses and number information of keys of the terminal controller;
step 6, the terminal controller directly replies a scanning response after receiving the scanning request, and the step 7 is carried out;
step 7, after receiving the scanning response, if the terminal can send out a connection request according to a normal process and the connection is successful, the reconnection is successful, and after the reconnection is successful, the key value transmission of the key is carried out in a data channel, and the process is ended; otherwise, entering a step 8;
step 8, the terminal analyzes the received scanning response, judges the Mac address of the scanning response, and enters step 9 if the Mac address of the scanning response is the stored Bluetooth Mac address of the pairing terminal controller;
and 9, analyzing the key number and the key value carried in the scanning response, if the key number is inconsistent with the corresponding number in the terminal, uploading the key value to a terminal system to realize corresponding key operation, and ending the process.
In step 2, the loopback broadcast message comprises a terminal controller signal and private protocol information, wherein the loopback broadcast message comprises a custom rule.
In step 7, before the reconnection is successful, if new key information is transmitted from the terminal controller to the terminal by broadcasting, the process proceeds to step 3.
The Bluetooth communication system comprises a terminal and a terminal controller corresponding to the terminal, wherein the terminal and the corresponding terminal controller finish Bluetooth pairing, and the terminal and the corresponding terminal controller respectively store the Mac address and the key information of the opposite side; after the Bluetooth connection is disconnected, the terminal controller sends a back connection broadcast message; after receiving the back connection broadcast message, the terminal judges whether the back connection broadcast message accords with the self-defined rule of the terminal, if so, a scanning request is sent, and the scanning request carries Bluetooth Mac addresses of both sides; judging pairing information stored by a terminal controller, if the pairing information stored by the terminal controller is not lost, using a Bluetooth Mac address which is paired as a white list, receiving a scanning request by the terminal controller and detecting the white list, and if the pairing information passes the white list detection, replying a scanning response, wherein the replying scanning response comprises key values of keys of the terminal controller, the Mac address and the number information of the keys; otherwise, the white list is not set, and the terminal controller directly replies a scanning response after receiving the scanning request; after receiving the scanning response, if the terminal can send out a connection request according to a normal flow and the connection is successful, the reconnection is successful, and key value transmission of the keys is carried out in a data channel after the reconnection is successful; otherwise, analyzing the received scanning response, judging the Mac address of the scanning response, if the Mac address of the scanning response is the stored Bluetooth Mac address of the paired terminal controller, analyzing the key number and the key value carried in the scanning response, and if the key number is not consistent with the corresponding number in the terminal, uploading the key value to the terminal system to realize the corresponding key operation.
The present embodiment takes bluetooth communication between a television and a remote controller as an example.
As shown in fig. 1, the bluetooth communication method between a television and a remote controller specifically includes the following steps:
firstly, completing pairing between a television and a remote controller, and respectively storing a Mac address and key (key) information of the opposite side;
secondly, after the Bluetooth connection is disconnected, the Bluetooth remote controller performs a link action (such as user key link or automatic link) to try to recover the connection with the television, wherein the link action specifically comprises the step that the remote controller sends a link broadcast message ADV _ IND in a broadcast channel, and the message comprises the remote controller model and private protocol information which accord with the self-defined rule;
thirdly, after receiving the back connection broadcast message ADV _ IND, the television judges that the back connection broadcast message ADV _ IND accords with the self-defined rule, if the back connection broadcast message ADV _ IND accords with the self-defined rule, the television sends out a scanning request SCAN _ REQ, and Bluetooth MAC addresses of the two parties are carried in the SCAN _ REQ;
and fourthly, under the condition that the pairing information of the remote controller is not lost, taking the Bluetooth MAC address of the paired television as a white list filtering condition. And after the remote controller receives the SCAN _ REQ, if the white list detection is passed, replying a scanning response SCAN _ RSP. Under the condition that the pairing information of the remote controller is lost, the white list detection is not carried out any more, and the scanning response SCAN _ RSP is directly replied;
wherein, the SCAN response SCAN _ RSP replied by the remote controller carries specific information, including: key values of user keys, key information, a remote controller MAC address and the serial numbers of the keys at the current time (after the remote controller is powered on, the keys at each time are circularly numbered by adding 1 to 255 every time so as to distinguish the key actions at each time by the television end in a Bluetooth disconnection state);
fifthly, after the television receives the SCAN _ RSP, if the connection can be initiated according to a normal flow, the CONNET _ REQ is issued, and the whole connection process can be successfully completed, the connection is successfully returned; and subsequently, carrying out key value transmission on the key values in the data channel. If the back connection cannot be normally completed due to the loss and damage of the key data stored in the television, environmental interference and the like, entering a sixth step;
and sixthly, the television analyzes the received SCAN _ RSP, and if the Mac address in the scanning response is judged to be the stored Bluetooth MAC address of the paired remote controller, the key number and the key value carried in the SCAN _ RSP are further analyzed. If the key sequence number is different from the current value (after the television is started, the current value of the key sequence number is set to be 0, and the key sequence number carried in the remote controller SCAN _ RSP is received synchronously subsequently), the key value is uploaded to a terminal system to realize the corresponding key operation, and a complete transmission process of the key information is completed;
in the above process, before the back connection success, if there is new key information sent to the television end from the remote controller through the broadcast channel, the third step is entered.
In conclusion, the invention realizes the information interaction between the terminal and the corresponding terminal controller no matter whether the Bluetooth is back-connected or not, and improves the communication stability.
Claims (4)
1. The Bluetooth communication method is applied to the communication between a terminal and a corresponding terminal controller, and is characterized by comprising the following steps:
step 1, the terminal and a corresponding terminal controller finish Bluetooth pairing, and respectively store Mac addresses and key information of the opposite side;
step 2, after the Bluetooth connection is disconnected, the terminal controller sends a back connection broadcast message;
step 3, after receiving the back connection broadcast message, the terminal judges whether the back connection broadcast message accords with the self-defined rule of the terminal, if so, a scanning request is sent out, and the scanning request carries the Bluetooth Mac addresses of the two parties;
step 4, the pairing information stored in the terminal controller is judged, if the pairing information stored in the terminal controller is not lost, the Bluetooth Mac address matched with the terminal controller is used as a white list, and the step 5 is carried out; otherwise, not setting a white list, and entering the step 6;
step 5, the terminal controller receives the scanning request and carries out white list detection, if the white list detection is passed, scanning response is replied, and the step 7 is carried out, wherein the replied scanning response comprises key values, keys, Mac addresses and number information of the keys of the terminal controller;
step 6, the terminal controller directly replies a scanning response after receiving the scanning request, and the step 7 is carried out;
step 7, after receiving the scanning response, if the terminal can send out a connection request according to a normal process and the connection is successful, the reconnection is successful, and after the reconnection is successful, the key value transmission of the key is carried out in a data channel, and the process is ended; otherwise, entering a step 8;
step 8, the terminal analyzes the received scanning response, judges the Mac address of the scanning response, and enters step 9 if the Mac address of the scanning response is the stored Bluetooth Mac address of the pairing terminal controller;
and 9, analyzing the key number and the key value carried in the scanning response, if the key number is inconsistent with the corresponding number in the terminal, uploading the key value to a terminal system to realize corresponding key operation, and ending the process.
2. The bluetooth communication method according to claim 1, wherein in step 2, the loopback broadcast message comprises a terminal controller signal of a custom rule and private protocol information.
3. The bluetooth communication method according to claim 1, characterized in that the method further comprises: in step 7, before the completion of the reconnection, if new key information is transmitted from the terminal controller to the terminal by broadcasting, the process proceeds to step 3.
4. The Bluetooth communication system is used for realizing the Bluetooth communication method according to any one of claims 1 to 3, and is characterized by comprising a terminal and a terminal controller corresponding to the terminal, wherein the terminal and the corresponding terminal controller finish Bluetooth pairing, and the terminal and the corresponding terminal controller respectively store Mac addresses and key information of opposite sides; after the Bluetooth connection is disconnected, the terminal controller sends a back connection broadcast message; after receiving the back connection broadcast message, the terminal judges whether the back connection broadcast message accords with the self-defined rule of the terminal, if so, a scanning request is sent out, and the scanning request carries Bluetooth Mac addresses of both parties; then, pairing information stored by a terminal controller is judged, if the pairing information stored by the terminal controller is not lost, the Bluetooth Mac address which is paired is used as a white list, the terminal controller receives a scanning request and detects the white list, if the white list is detected, a scanning response is replied, and the replied scanning response comprises key values of keys of the terminal controller, the Mac address and the number information of the keys; otherwise, the white list is not set, and the terminal controller directly replies a scanning response after receiving the scanning request; after receiving the scanning response, if the terminal can send out a connection request according to a normal flow and the connection is successful, the reconnection is successful, and key value transmission of the keys is carried out in a data channel after the reconnection is successful; otherwise, analyzing the received scanning response, judging the Mac address of the scanning response, if the Mac address of the scanning response is the stored Bluetooth Mac address of the paired terminal controller, analyzing the key number and the key value carried in the scanning response, and if the key number is not consistent with the corresponding number in the terminal, uploading the key value to the terminal system to realize the corresponding key operation.
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| CN202210423010.0A CN114640980A (en) | 2022-04-21 | 2022-04-21 | Bluetooth communication method and system |
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| CN202210423010.0A CN114640980A (en) | 2022-04-21 | 2022-04-21 | Bluetooth communication method and system |
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Cited By (1)
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