CN106411404A - Control method, control device, mobile terminal and wireless communication system - Google Patents

Abstract

The invention discloses a control method for controlling a mobile terminal to perform wireless communication. First, the signal light received by the mobile terminal is processed to obtain security information. The signal light is generated by driving the light source to emit light with a driving signal loaded with safety information. Next, encrypt the communication data according to the security information and send the encrypted communication data to the interactive terminal. In addition, the invention also discloses a control device, a mobile terminal and a wireless communication system. The control method, control device, mobile terminal, and wireless communication system of the present invention use visible light to downlink to transmit safety information and use the safety information to encrypt communication data for uplink transmission, and use the confidentiality of visible light transmission to ensure the transmission of uplink communication data security.

Description

Control method, control device, mobile terminal and wireless communication system

technical field

The invention relates to wireless communication technology, in particular to a control method, a control device, a mobile terminal and a wireless communication system.

Background technique

Existing wireless communication loads communication data on electromagnetic waves for transmission. Due to the strong penetration and diffraction of electromagnetic waves, the transmission distance cannot be controlled. Therefore, it may be eavesdropped outside the service range, and the security is poor.

On the other hand, visible light communication loads the communication data on the driving voltage or driving current of the light source at the transmitting end, so that the brightness of the light source changes with the brightness of the light source. In this way, the receiving end can demodulate the communication data by detecting the brightness change. Since the transmission distance and coverage of visible light are controllable, eavesdropping outside the service range can be avoided. Therefore, visible light communication is safe, and has the advantages of green environmental protection and no electromagnetic radiation.

However, in the downlink of visible light communication, the base station can be equipped with a light source capable of sending communication data to the user terminal; however, in the uplink, the mobile terminal often does not have a light source capable of sending communication data to the base station.

To sum up, there is currently no ideal communication technology in terms of security and feasibility.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention needs to provide a control method and a control device for controlling a mobile terminal to perform wireless communication.

A control method for controlling wireless communication between a mobile terminal and an interactive terminal, the control method comprising the following steps:

processing the signal light received by the mobile terminal to obtain safety information, where the signal light is generated by driving a light source driven by a driving signal loaded with the safety information;

Encrypting communication data according to the security information;

sending the encrypted communication data to the interactive terminal.

In some embodiments, the security information includes communication data received by the mobile terminal.

A control device is used to control a mobile terminal to perform wireless communication with an interactive terminal, and the control device includes a processing module and an encryption module.

The processing module is configured to process the signal light received by the mobile terminal to obtain safety information, and the signal light is generated by driving a light source driven by a driving signal loaded with the safety information;

The encryption module encrypts communication data according to the security information;

A first sending module, where the first sending module sends the encrypted communication data to the interactive terminal.

In some embodiments, the security information includes communication data received by the mobile terminal.

A mobile terminal according to an embodiment of the present invention includes the control device.

In some embodiments, the mobile terminal includes a mobile phone or a tablet computer.

A wireless communication system according to an embodiment of the present invention includes the mobile terminal.

In some embodiments, the wireless communication system includes the interactive terminal, and the interactive terminal includes an access point of the wireless local area network where the mobile terminal is located, a mobile phone or a tablet computer.

In some embodiments, the interactive terminal includes an access point of the wireless local area network where the mobile terminal is located, the interactive terminal includes a generating module, a driving module, and a light source, and the generating module is used to generate the security information, The driving module is used for loading the safety information on the driving voltage or driving current of the light source and driving the light source to emit light.

In some embodiments, there are other mobile terminals in the wireless local area network, and the access point is further configured to generate other security information corresponding to the other mobile terminals, where the security information is different from the other security information.

In some embodiments, the access point includes a plurality of light sources, each of which forms a predetermined lighting area; the access point further includes an identification module, a judging module, and a driving module.

The identification module is used to identify the location information of the mobile terminal;

The judging module is used to determine a target light source according to the position information, the plurality of light sources include the target light source, and the mobile terminal falls into a predetermined lighting area of the target light source; and

The driving module is used for loading the safety information on the driving voltage or driving current of the target light source and driving the target light source to emit light.

In some embodiments, the security information is updated at a predetermined period.

In some embodiments, the interactive terminal includes an access point of the wireless local area network where the mobile terminal is located, and the access point is used to generate a public key and a private key of the mobile terminal, and the security information includes the said public key.

The control method, control device, mobile terminal, and wireless communication system in the embodiments of the present invention use visible light to downlink to transmit security information and use the security information to encrypt communication data for uplink transmission, and utilize the confidentiality of visible light transmission to ensure uplink communication Security of data transmission.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic flowchart of a control method according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of functional modules of a wireless communication system according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of another functional module of the wireless communication system according to the embodiment of the present invention.

Fig. 4 is a schematic diagram of another functional module of the wireless communication system according to the embodiment of the present invention.

Fig. 5 is a schematic diagram of another functional module of the wireless communication system according to the embodiment of the present invention.

Fig. 6 is a working principle diagram of the embodiment of the present invention.

Description of main component symbols:

Wireless local area network 1000, mobile terminal 100, control device 10, processing module 12, encryption module 14, first sending module 16, interactive terminal 200, access point 200, generation module 210, drive module 220, identification module 230, judgment module 240 , 300 light sources.

detailed description

Embodiments of the present invention are described in detail below, embodiments of which are illustrated in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present disclosure may repeat reference numerals and/or reference letters in different instances, such repetition is for simplicity and clarity and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed.

Please refer to FIG. 1, the control method according to the embodiment of the present invention is used to control the mobile terminal to perform wireless communication, and the control method includes the following steps:

S12: Process the signal light received by the mobile terminal to obtain security information;

S14: Encrypt communication data according to the security information; and

S16: Send encrypted communication data to the interactive terminal.

Please refer to FIG. 2 , the control method in the embodiment of the present invention can be implemented by the control device 10 in the embodiment of the present invention, and is used to control the wireless communication between the mobile terminal 100 and the interactive terminal 200 . The control device 10 includes a processing module 12 , an encryption module 14 and a first sending module 16 . The processing module 12 is used for processing the signal light received by the mobile terminal 100 to obtain security information, and the signal light is generated by driving the light source 300 to emit light with a driving signal loaded with security information. The encryption module 14 encrypts communication data according to security information. The first sending module 16 is used for sending encrypted communication data to the interactive terminal 200 .

That is to say, step S12 can be implemented by the processing module 12 , step S14 can be implemented by the encryption module 14 , and step S16 can be implemented by the first sending module 16 .

Referring to FIG. 3 , in some implementations, the control device 10 can be applied to the mobile terminal 100 in the implementation of the present invention. That is to say, the mobile terminal 100 in the embodiment of the present invention may include a control device.

In some implementation manners, the mobile terminal 100 in the embodiment of the present invention can be applied to the wireless communication system 1000 in the embodiment of the present invention. In other words, the wireless communication system 1000 includes a mobile terminal 100 . In some implementation manners, the wireless communication system 1000 may further include an interactive terminal 200 .

The control method, the control device 10, the mobile terminal 100, and the wireless communication system according to the embodiments of the present invention transmit security information through the downlink of visible light communication, and use the security information to encrypt uplink communication data or the mobile terminal 100 to send communication data, In this way, the transmission security of security information is ensured, that is to say, the security of wireless communication is improved by using the confidentiality of visible light communication.

In addition, when the communication data is sent on the uplink or by the mobile terminal 100, it may be sent in a wireless communication manner, so as to ensure the feasibility of the communication. To sum up, the control method, the control device 10 and the mobile terminal 100 in the embodiments of the present invention can simultaneously ensure the security and feasibility of wireless communication.

The mobile terminal 100 may be a device such as a mobile phone or a tablet computer that can detect changes in the brightness of ambient light and can access a wireless communication network.

In this embodiment, the mobile terminal 100 is a mobile phone.

The interactive terminal 200 can also be an access point of the wireless local area network where the mobile terminal 100 is located, etc., which can interact with the mobile terminal 100 to help the mobile terminal 100 access the wireless communication network, or a mobile phone or a tablet computer can communicate with the mobile terminal 100 through the wireless communication network. A device or device that interacts with the mobile terminal 100 .

In this embodiment, the interactive terminal 200 is an access point of the wireless local area network where the mobile terminal 100 is located.

Referring to FIG. 4 , the interactive terminal 200 includes a generating module 210 , a driving module 220 and a light source 300 . The generating module 210 is used to generate safety information, and the driving module 220 is used to load the safety information on the driving voltage or driving current of the light source 300 and drive the light source 300 to emit light.

In some implementations, the generating module 210 generates security information for the mobile terminal 100 according to the security information generation algorithm, the driving module 220 loads the security information on the driving voltage or driving current of the light source 300 and drives the light source 300 to send visible light information, the mobile terminal 100 receives the visible light information sent by the access point 200, and obtains security information after processing. The mobile terminal 100 encrypts communication data using security information, and transmits the encrypted communication data to the access point 200 . In this way, the access point 200 can decrypt the encrypted communication data according to the security information sent to the mobile terminal 100 , so as to obtain the communication data of the mobile terminal 100 . The security information is generated by the access point 200 and sent to the mobile terminal 100 through secure visible light communication. Therefore, during the entire communication process, the security information will not be obtained by other communication devices, which improves the security of wireless communication.

In some implementations, the interactive terminal 200 includes the mobile terminal 100 , and the security information is generated by the generation module 210 of the access point 200 . The generation module 210 generates different security information for different mobile terminals 100, and the security information includes public keys and private keys. The access point 200 loads the security information on the driving signal to drive the light source 300 to send visible light information. Different mobile terminals 100 receive corresponding security information, and obtain corresponding private keys after processing. The first mobile terminal 100 can obtain the public key of the second mobile terminal 100 through a variety of methods, including but not limited to the following method. Visible light transmits the private keys corresponding to different mobile terminals 100 and at the same time transmits the public keys of other mobile terminals or different mobile terminals The public key is directly transmitted through traditional communication methods such as Bluetooth and WIFI. The first mobile terminal 100 encrypts the communication data using the public key of the second mobile terminal 100 and transmits the encrypted communication data to the second mobile terminal 100 . In this way, the second mobile terminal 100 uses the private key to decrypt the encrypted communication data, so as to obtain the communication data sent by the first mobile terminal 100 . The private key in the security information is generated by the access point 200 and sent to the corresponding mobile terminal 100 through visible light communication. Therefore, during the entire communication process, the private key corresponding to each mobile terminal 100 will not be obtained by other communication devices, improving security of wireless communication.

Referring to FIG. 5 , in some embodiments, there are other mobile terminals 100 in the wireless local area network 1000 , and the generating module 210 is also configured to generate other security information corresponding to the other mobile terminals 100 .

Specifically, the generation module 210 generates different security information for each different mobile terminal 100, the access point 200 sends the different security information to different mobile terminals 100 correspondingly, and the different mobile terminals 100 encrypt according to different security information communication data, and send the encrypted communication data to the access point 200, and the access point 200 can decrypt it according to different security information corresponding to different mobile terminals 100. In this way, different mobile terminals 100 have different security information, and different mobile terminals 100 cannot decrypt encrypted communication data of other mobile terminals 100, which improves the security of wireless communication.

Referring to FIG. 6 , in some implementations, the access point 200 includes a plurality of light sources 300 , and each light source 300 forms a predetermined lighting area; The identifying module 230 is used for identifying the location information of the mobile terminal 100 . The judging module 240 is configured to determine the target light source 300 according to the position information, the multiple light sources 300 include the target light source 300 , and the mobile terminal 100 falls into a predetermined lighting area of the target light source 300 . The driving module 220 loads the security information on the driving voltage or driving current of the target light source 300 and drives the target light source 300 to emit light.

By identifying the positions of different mobile terminals 100, the access point 200 loads different security information on the driving signals of the light source 300 corresponding to the positions of different mobile terminals 100, so that different mobile terminals 100 can obtain different corresponding security information, which improves the Security of wireless communications.

In some implementations, the method for the access point 200 to identify the location information of the mobile terminal 100 and determine the target light source 300 includes: the access point 200 is connected to the mobile terminal 100 through traditional communication methods such as WIFI or Bluetooth, and the mobile terminal 100 Or other positioning methods to obtain location information, and transmit the location information to the access point 200 through traditional communication methods. The access point 200 compares the location information of the mobile terminal 100 with the coverage of each light source 300 to determine the target light source 300 covering the area where the mobile terminal 100 is located.

In some embodiments, the method for the access point 200 to identify the location information of the mobile terminal 100 and determine the target light source 300 further includes: the access point 200 connects with the mobile terminal 100 through traditional communication methods such as WIFI or Bluetooth, and uses different The light source 300 sends different visible light information, and then compares the information fed back by different mobile terminals 100 with the information sent by different light sources 300, so as to find out the target light source 300 corresponding to each mobile terminal.

The access point 200 may also identify the location information of the mobile terminal 100 and determine the target light source 300 through other methods, which are not limited herein.

In some embodiments, security information is updated on a predetermined period. Since the security information is updated at a predetermined period, the risk of the security information being cracked can be reduced, thereby improving the security of wireless communication.

In some embodiments, the safety information may be updated at a fixed time, including once every three months, every month, every week, or every day.

In some embodiments, the security information may also be updated according to requirements, including according to different data transmission volumes and different communication environments. When the transmission volume is greater than a predetermined value, such as 10M per day, the update period can be set relatively short, such as once a day, and when the transmission volume is lower than the predetermined value, the update period can be set relatively long, such as once a week. When the communication environment is relatively bad, if someone tries to intercept and decipher the encrypted communication data, the security information can be updated immediately. Such as once a month.

In some embodiments, the security information includes communication data received by the mobile terminal 100 . In this way, the access point 200 does not need to generate security information specifically for the mobile terminal 100, which can reduce the workload of the access point 200 and improve work efficiency.

In some embodiments, the security information can not only be specially generated by the generation module 210 , but also can be VLC data sent by the access point 200 to the mobile terminal 100 . The control device 10 obtains security information by performing relevant processing on the visible light communication data sent from the access point 200 to the mobile terminal 100 , then encrypts the communication data with the obtained security information, and sends the encrypted communication data to the access point 200 . The access point 200 also performs the same processing on the corresponding visible light communication data to obtain the same security information, and then uses the obtained security information to decrypt the encrypted communication data, thereby obtaining the communication data sent by the mobile terminal 100 .

In some embodiments, the interactive terminal 200 includes an access point 200 of the wireless local area network 1000 where the mobile terminal 100 is located, and the access point 200 is used to generate a public key and a private key of the mobile terminal 100, and the security information includes the public key.

In some embodiments, the communication method between the mobile terminal 100 and the interactive terminal 200 includes asymmetric encryption, that is to say, the communication data encrypted with the public key cannot be decrypted with the same public key, and can only be decrypted with the corresponding private key. . The mobile terminals 100 in the same local area network terminal can obtain the public keys and unique private keys of all mobile terminals 100 in the local area network. The first mobile terminal 100 uses the public key of the second mobile terminal 100 to encrypt the communication data and sends the encrypted communication data to the second mobile terminal 100, and the second mobile terminal 100 uses the unique private key to decrypt the encrypted communication data to obtain the first mobile The communication data sent by the terminal 100 realizes the communication between the mobile terminals 100 .

In the description of this specification, reference to the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific examples", or "some examples" etc. A specific feature, structure, material, or characteristic described in an embodiment or an example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

Although the embodiment of the present invention has been shown and described above, it can be understood that the above embodiment is exemplary and should not be construed as a limitation of the present invention, and those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (13)

1. A control method, for controlling a mobile terminal to perform wireless communication with an interactive terminal, characterized in that the control method comprises the following steps: processing the signal light received by the mobile terminal to obtain safety information, where the signal light is generated by driving a light source driven by a driving signal loaded with the safety information; encrypting communication data according to said security information; and sending the encrypted communication data to the interactive terminal. 2. The control method according to claim 1, wherein the security information includes communication data received by the mobile terminal. 3. A control device for controlling a mobile terminal to communicate wirelessly with an interactive terminal, characterized in that the control device includes: A processing module, the processing module is used to process the signal light received by the mobile terminal to obtain safety information, and the signal light is generated by driving a light source to emit light with a driving signal loaded with the safety information; An encryption module, the encryption module encrypts communication data according to the security information; and A first sending module, where the first sending module sends the encrypted communication data to the interactive terminal. 4. The control device according to claim 3, wherein the security information includes communication data received by the mobile terminal. 5. A mobile terminal, characterized in that the mobile terminal comprises the control device according to claim 3 or 4. 6. The mobile terminal according to claim 5, wherein the mobile terminal comprises a mobile phone or a tablet computer. 7. A wireless communication system, characterized in that the wireless communication system comprises the mobile terminal according to claim 5. 8. The wireless communication system according to claim 7, characterized in that, the wireless communication system includes the interactive terminal, and the interactive terminal includes an access point of the wireless local area network where the mobile terminal is located, a mobile phone or a tablet computer . 9. The wireless communication system according to claim 7, wherein the interactive terminal comprises an access point of the wireless local area network where the mobile terminal is located, the interactive terminal comprises a generating module, a driving module and a light source, the The generating module is used to generate the safety information, and the driving module is used to load the safety information on the driving voltage or driving current of the light source and drive the light source to emit light. 10. The wireless communication system according to claim 9, wherein there are other mobile terminals in the wireless local area network, and the access point is also used to generate other security information corresponding to the other mobile terminals, the The security information is different from the other security information described. 11. The wireless communication system according to claim 9, wherein the access point comprises a plurality of light sources, and each of the light sources forms a predetermined illumination area; the access point further comprises: An identification module, the identification module is used to identify the location information of the mobile terminal; A judging module, the judging module is configured to determine a target light source according to the position information, the plurality of light sources include the target light source, and the mobile terminal falls into a predetermined lighting area of the target light source; and A driving module, the driving module is used to load the security information on the driving voltage or driving current of the target light source and drive the target light source to emit light. 12. The wireless communication system according to claim 7, wherein the security information is updated at a predetermined period. 13. The wireless communication system according to claim 7, wherein the interactive terminal comprises an access point of the wireless local area network where the mobile terminal is located, and the access point is used to generate a public key and the mobile terminal private key, the security information includes the public key.