CN106549708A - WLAN and terminal and its control method and device, wireless communication system - Google Patents
WLAN and terminal and its control method and device, wireless communication system Download PDFInfo
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- CN106549708A CN106549708A CN201611051962.5A CN201611051962A CN106549708A CN 106549708 A CN106549708 A CN 106549708A CN 201611051962 A CN201611051962 A CN 201611051962A CN 106549708 A CN106549708 A CN 106549708A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07953—Monitoring or measuring OSNR, BER or Q
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mobile Radio Communication Systems (AREA)
- Small-Scale Networks (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a kind of control method of visible ray downlink communication Detection of Stability, for controlling WLAN.WLAN includes WAP and light source.Control method includes：Judge whether to receive the information with the metastable state of the terminal feedback of wireless LAN communication；Light source transmission signal light is controlled when information is received so that by visible optical link and terminal communication, terminal detection signal light is to obtain the link parameter of visible optical link, and passes through Radio Link to WAP transmission link parameter；When information is not received, WLAN carries out downlink communication using visible optical link with terminal.The present invention also provides a kind of control device for controlling WLAN, WLAN, the control method of control terminal and control device, terminal and wireless communication system.The present invention passes through the stability for detecting visible ray downlink communication to determine the transmission means of downlink communication, so as to improve communication quality and efficiency of transmission.
Description
Technical field
The present invention relates to WLAN and terminal and its control method and device, wireless communication system, more particularly to use
In control WLAN and the control method and control device and channel radio of the visible ray downlink communication Detection of Stability of terminal
Letter system.
Background technology
Communication data is loaded on the driving voltage or driving current of the light source of transmitting terminal to control light source for visible light communication
Communication data simultaneously is demodulated out from flashlight by transmission signal light, the photoelectric detection device detection signal light of receiving terminal, so as to
Realize radio communication.Visible light communication has the advantages that environmentally friendly no electromagnetic pollution has been widely used in the descending of WLAN
In link communication.
It is appreciated that due to the angle of divergence of light source it is limited, and photoelectric detection device also have certain detecting angle of visual field, because
This photoelectric detection device and light source whether on the stability of visible light communication will definitely be affected, however, existing as the terminal of receiving terminal
During use, position and orientation may change, and cause the stability of visible light communication not enough, affect visible light communication matter
Amount, and do not have now ripe detection technique to detect the stability of visible light communication.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.For this purpose, the present invention is provided to controlling
The control method and control device of the visible ray downlink communication Detection of Stability of WLAN processed, for the visible of control terminal
The control method and control device and wireless communication system of light downlink communication Detection of Stability.
The control method of the visible ray downlink communication Detection of Stability of embodiment of the present invention, for controlling wireless local
Net, the WLAN include WAP and light source, and the control method is comprised the following steps：
Judge whether to receive the information in metastable state with the terminal feedback of the wireless LAN communication；
The light source transmission signal light is controlled when described information is received with logical with the terminal by visible optical link
Letter, the terminal are detected the flashlight to obtain the link parameter of visible optical link, and by Radio Link to described wireless
Access point sends the link parameter；With
Downlink communication is carried out with the terminal using visible optical link when described information is not received.
In some embodiments, the information in metastable state of the terminal feedback includes utilizing Radio Link
Feedback described information.
In some embodiments, the link parameter of the visible optical link include the visible optical link signal to noise ratio and
Signal strength signal intensity.
In some embodiments, the control method also includes step：
Judge the link parameter of the visible optical link whether more than predetermined threshold value；With
Will be right according to the parameter of the visible optical link when the link parameter of the visible optical link is more than predetermined threshold value
The communication data of speed is answered to distribute to the visible optical link.
The control device of communication stability detection under the visible ray of embodiment of the present invention, for controlling WLAN,
The WLAN includes WAP and light source, and the control device includes the first judge module, first processing module
And Second processing module.First judge module is used to judging whether to receive anti-with the terminal of the wireless LAN communication
The information in metastable state of feedback, the first processing module for controlling the light source when described information is received
Transmission signal light is so that by visible optical link and the terminal communication, the terminal is detected the flashlight to obtain visible ray chain
The link parameter on road, and the link parameter, the Second processing module are sent to the WAP by Radio Link
For being communicated with the terminal using visible optical link when described information is not received.
In some embodiments, the control device also includes the second judge module, distribute module.Described second judges
Module is used to judging the link parameter of the visible optical link whether more than predetermined threshold value, the distribute module for it is described can
According to the parameter of the visible optical link by the communication data of corresponding speed when seeing that the link parameter of optical link is more than predetermined threshold value
Distribute to the visible optical link.
The WLAN of embodiment of the present invention includes descending for controlling the visible ray of the WLAN
The control device of communication stability detection.
The control method of the visible ray downlink communication Detection of Stability of embodiment of the present invention, for control using wireless office
The terminal of domain net, the WLAN include WAP and light source, and the control method is comprised the following steps：
Judge the terminal whether in metastable state；
The terminal is controlled when the terminal is not in metastable state using Radio Link and the wireless local
Net carries out downlink communication；
The flashlight that the user terminal detects the light source transmitting is controlled when the terminal is in metastable state
To pass through visible optical link and the wireless LAN communication, and obtain the link parameter of visible optical link；
Process the flashlight to initialize the visible optical link；With
Control the user terminal and the link parameter is sent to the WAP by Radio Link.
In some embodiments, the terminal includes 3-axis acceleration sensor, described to judge whether the terminal is located
Include detecting the acceleration in three directions of terminal to judge using the 3-axis acceleration sensor in metastable state
Whether the terminal is in metastable state.
In some embodiments, the process flashlight includes following sub-step to initialize the visible optical link
Suddenly：
Judge the signal strength signal intensity of the flashlight that the terminal is received whether more than predetermined value；
The synchronous threshold value of the visible optical link is improved when the signal strength signal intensity of the flashlight is more than the predetermined value；
With
The synchronous threshold value of the visible optical link is reduced when the intensity of the signal is less than or equal to the predetermined value.
The control device of the visible ray downlink communication Detection of Stability of embodiment of the present invention, for control using wireless office
The terminal of domain net, the WLAN include WAP and light source, the control device include the 3rd judge module, the
Three processing modules, fourth processing module, the 5th processing module and feedback module.3rd judge module is used to judge the end
Whether end is in metastable state, and the 3rd processing module is for described in when the terminal is not in metastable state
Terminal carries out downlink communication using Radio Link and the WLAN, and the fourth processing module is in the end
The user terminal is controlled when metastable state the flashlight of the light source transmitting is detected with by visible optical link and institute
State wireless LAN communication, and obtain the link parameter of visible optical link, the 5th processing module is used to process the signal
To initialize the visible optical link, the feedback module is used to control the user terminal by Radio Link to the nothing light
Line access point sends the link parameter.
In some embodiments, the 5th processing module includes the 4th judge module, the first adjusting module and second
Adjusting module.4th judge module is used for whether the signal strength signal intensity of the flashlight for judging that the terminal is received to be more than
Predetermined value, first adjusting module for the signal strength signal intensity of the flashlight be more than the predetermined value when improve described visible
The synchronous threshold value of optical link, when second adjusting module is less than or equal to the predetermined value for the intensity in the signal
Reduce the synchronous threshold value of the visible optical link.
The terminal of embodiment of the present invention includes using the visible ray of the terminal of WLAN descending for control
The control device of communication stability detection.
The wireless communication system of embodiment of the present invention includes the WLAN and the terminal.
Embodiment of the present invention for controlling the visible ray downlink communication Detection of Stability of WLAN and terminal
Control method and control device and wireless communication system detect visible optical link before downlink communication is carried out using visible ray, first
Stability, select visible optical link to carry out downlink communication in the case where the stability of visible optical link is higher, thus, can be with
Avoid the poor problem of caused communication quality in the case of visible ray link stability difference, it is also possible to reduce and re-use radio chains
The big problem of communication delay that road transmission data is brought.
The additional aspect and advantage of the present invention will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from the description with reference to accompanying drawings below to embodiment
Substantially with it is easy to understand, wherein：
Fig. 1 is the schematic flow sheet for controlling the control method of WLAN of embodiment of the present invention；
Fig. 2 is the high-level schematic functional block diagram for controlling the control device of WLAN of embodiment of the present invention；
Fig. 3 is another schematic flow sheet for controlling the control method of WLAN of embodiment of the present invention；
Fig. 4 is that another functional module for controlling the control device of WLAN of embodiment of the present invention is illustrated
Figure；
Fig. 5 is that the flow process of the control method of the terminal that WLAN is used for control of embodiment of the present invention is illustrated
Figure；
Fig. 6 is the functional module of the control device of the terminal that WLAN is used for control of embodiment of the present invention
Schematic diagram；
Fig. 7 is another flow process of control method of the terminal that WLAN is used for control of embodiment of the present invention
Schematic diagram；
Fig. 8 is another function of the control device of the terminal that WLAN is used for control of embodiment of the present invention
Module diagram；
Fig. 9 is the fundamental diagram of the wireless communication system of embodiment of the present invention.
Main element and symbol description：
For controlling the control device 10 of WLAN, the first judge module 11, first processing module 12, second processing
Module 13, the second judge module 14, distribute module 15, for control using the terminal of WLAN control device 20, the
Three judge modules 21, the 3rd processing module 22, fourth processing module 23, the 5th processing module 24, the 4th judge module 241,
One adjusting module 242, the second adjusting module 243, feedback module 25.
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio
Same or similar element or the element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining Description of Drawings is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, " multiple " are meant that two or more, unless otherwise expressly limited specifically.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.In order to
Simplify disclosure of the invention, hereinafter the part and setting of specific examples are described.Certainly, they are only merely illustrative, and
And purpose does not lie in the restriction present invention.Additionally, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, between itself not indicating discussed various embodiments and/or arranging
Relation.
Refer to Fig. 1, the control method of the visible ray downlink communication Detection of Stability of embodiment of the present invention, for controlling
WLAN, the WLAN include WAP and light source, and the control method is comprised the following steps：
S11：Judge whether to receive with the terminal feedback of the wireless LAN communication in metastable state
Information；
S12：The light source transmission signal light is controlled when described information is received with by visible optical link and the end
End communication, the terminal are detected the flashlight to obtain the link parameter of visible optical link, and by Radio Link to described
WAP sends the link parameter；With
S13：Downlink communication is carried out with the terminal using visible optical link when described information is not received.
Fig. 2 is referred to, the control method of embodiment of the present invention can be wireless for controlling by embodiment of the present invention
The control device 10 of LAN is implemented.
Control device 10 for controlling WLAN includes the first judge module 11, first processing module 12 and second
Processing module 13.Wherein, WLAN includes WAP and light source.First judge module 11 is used to judge whether to receive
To the information in metastable state with the terminal feedback of the wireless LAN communication, first processing module 12 for
The light source transmission signal light is controlled when receiving described information with by visible optical link and the terminal communication, the terminal
The flashlight is detected to obtain the link parameter of visible optical link, and institute is sent to the WAP by Radio Link
State link parameter, Second processing module 13 is for carrying out with the terminal using visible optical link when described information is not received
Communication.
In other words, step S11 can be realized by the first judge module 11 that step S12 can be by first processing module 12
Realize, step S13 can be realized by Second processing module.
It is appreciated that when WLAN carries out downlink communication with terminal, probably due to the movement of terminal causes terminal
The light source of photoelectric detector misalignment WLAN, causes the less stable of the visible optical link of downlink communication, affects eventually
The data receiver at end.The stability of visible optical link is first detected before downlink communication, can be avoided using unstable visible ray
Caused by link transmission data, there is the situation of error in data reception in terminal.Additionally, being entered using unstable visible optical link
After row data transfer, as the problem of terminal data garbled-reception needs re-using transmission of radio links data cause entirely
The time delay of wireless communication system is elongated.The stability of visible optical link is first detected before downlink communication, data can be avoided again
The situation of transmission, reduces the time delay of wireless communication system, lifts the efficiency of transmission of wireless communication system.
In some embodiments, the information in metastable state of terminal feedback includes feeding back using Radio Link
Described information.
It is appreciated that terminal cannot typically provide the light source of sufficient intensity to carry out the uplink of data, therefore, in order to
Ensure the accuracy and reliability of data transfer, the uplink communication between terminal and WLAN is typically entered using Radio Link
Row data transfer.Thus, status information is fed back by terminal using Radio Link, it is ensured that the efficiency of transmission of data.
In some embodiments, it is seen that the link parameter of optical link includes that the signal to noise ratio and signal of visible optical link is strong
Degree.
It is appreciated that the signal to noise ratio and signal strength signal intensity of visible optical link reflect the quality of visible optical link.If noise
It is higher than with signal strength signal intensity, show the communication quality of visible optical link preferably, be conducive to the data receiver of receiving terminal, lift data
The accuracy of reception.
Fig. 3 is referred to, in some embodiments, control method also includes step：
S14：Judge the link parameter of the visible optical link whether more than predetermined threshold value；With
S15：Parameter when the link parameter of the visible optical link is more than predetermined threshold value according to the visible optical link
The communication data of corresponding speed is distributed to into the visible optical link.
Fig. 4 is referred to, in some embodiments, the control device 10 for controlling WLAN is also sentenced including second
Disconnected module 14 and distribute module 15.Whether second judge module 14 is used for the link parameter for judging the visible optical link more than pre-
If threshold value, distribute module 15 for the link parameter in the visible optical link be more than predetermined threshold value when according to the visible ray chain
The communication data of corresponding speed is distributed to the visible optical link by the parameter on road.
In other words, step S14 can be realized by the second judge module 14 that step S15 can be realized by distribute module 15.
It is appreciated that when the signal to noise ratio and signal strength signal intensity of visible optical link are less than or equal to predetermined threshold value, showing visible
The communication quality of optical link is poor, therefore, Radio Link should be selected to carry out the data transfer of downlink communication.And in visible optical link
Signal to noise ratio and signal strength signal intensity when being more than predetermined threshold value, select suitable speed to be led to according to the link parameter of visible optical link
Letter, can lift the efficiency of data transfer, it is ensured that the accuracy of data transmission and reception.
The WLAN of embodiment of the present invention is included for controlling the control device 10 of wireless network.Thus, of the invention
The WLAN of embodiment has the ability of downlink communication Detection of Stability.
Refer to Fig. 5, the control method of the visible ray downlink communication Detection of Stability of embodiment of the present invention, for controlling
Using the terminal of WLAN, the WLAN includes WAP and light source, and the control method includes following
Step：
S21：Judge the terminal whether in metastable state；
S22：The terminal is controlled when the terminal is not in metastable state wireless with described using Radio Link
LAN carries out downlink communication；
S23：The letter that the user terminal detects the light source transmitting is controlled when the terminal is in metastable state
Number light is with by visible optical link and the wireless LAN communication, and obtains the link parameter of visible optical link；
S24：Process the flashlight to initialize the visible optical link；With
S25：Control the user terminal and the link parameter is sent to the WAP by Radio Link.
Fig. 6 is referred to, the control method of embodiment of the present invention can be by the terminal that WLAN is used for control
Control device 20 realize.
Include that threeth judge module 21, threeth process mould using the control device 20 of the terminal of WLAN for control
Block 22, fourth processing module 23, the 5th processing module 24 and feedback module 25.Wherein, WLAN includes WAP
And light source.Whether 3rd judge module 21 is used to judge the terminal in metastable state, and the 3rd processing module 22 is used for
When the terminal is not in metastable state, the terminal is carried out descending logical using Radio Link and the WLAN
Letter, fourth processing module 23 detect the light source for the user terminal is controlled when the terminal is in metastable state
The flashlight of transmitting is with by visible optical link and the wireless LAN communication, and obtains the link parameter of visible optical link,
5th processing module 24 is used to process the flashlight to initialize the visible optical link, and feedback module 25 is described for controlling
User terminal sends the link parameter to the WAP by Radio Link.
In other words, step S21 can be realized by the 3rd judge module 21 that step S22 can be by the 3rd processing module 22
Realize, step S23 can be realized by fourth processing module 23 that step S24 can be realized by the 5th processing module 24, step S25
Can be realized by feedback module 25.
It is appreciated that when terminal is in the unstable state such as mobile, the visible light communication link of terminal and WLAN
Dtr signal.Terminal first detects the stable state of itself in downlink communication, then by status information feedback to WLAN,
Can be communicated with terminal using suitable downstream communications link in order to WLAN, reduce wireless communication system when
Prolong.
In some embodiments, terminal includes 3-axis acceleration sensor, and step S21 judges whether the terminal is in
Metastable state includes detecting the acceleration in three directions of terminal to judge using the 3-axis acceleration sensor
Whether that states terminal is in metastable state.
It is appreciated that 3-axis acceleration sensor with measurement space acceleration, can accurately reflect the fortune of terminal comprehensively
Dynamic state.Additionally, 3-axis acceleration sensor has small volume and lightweight feature, end in being desirably integrated into terminal, is not affected
The overall volume at end.
Fig. 7 is referred to, in some embodiments, step S24 processes the flashlight to initialize the visible ray chain
Road includes following sub-step：
S241：Judge the signal strength signal intensity of the flashlight that the terminal is received whether more than predetermined value；
S242：The synchronous gate of the visible optical link is improved when the signal strength signal intensity of the flashlight is more than the predetermined value
Limit value；With
S243：The synchronous gate of the visible optical link is reduced when the intensity of the signal is less than or equal to the predetermined value
Limit value.
Fig. 8 is referred to, in some embodiments, the 5th processing module 24 includes that the 4th judge module 241, first is adjusted
Module 242 and the second adjusting module 243.4th judge module 241 is used to judging the flashlight that the terminal is received
Whether signal strength signal intensity is more than predetermined value, and the first adjusting module 242 is predetermined more than described for the signal strength signal intensity in the flashlight
Improve the synchronous threshold value of the visible optical link during value, the second adjusting module 243 be less than for the intensity in the signal or
The synchronous threshold value of the visible optical link is reduced during equal to the predetermined value.
In other words, step S241 can be realized by the 4th judge module 241 that step S242 can be by the first adjusting module
242 realize, step S243 can be realized by the second adjusting module 243.
It is appreciated that the synchronous effect of terminal data is the start bit of the signal that detection is received, it is ensured that data it is accurate
Receive.If the synchronous threshold value of data syn-chronization arranges too high, terminal cannot detect the original position of signal, if data syn-chronization
Synchronous threshold value arrange too low, then be likely to occur the situation of data syn-chronization error.Thus, the flashlight received according to terminal
The synchronous threshold value of signal strength signal intensity adjustment, to ensure accurate synchronization and the reception of data.
The terminal of embodiment of the present invention includes the control device 20 of the terminal that WLAN is used for control.Such as
This, terminal has the ability of detection displacement state, and by displacement feedback of status to WLAN so as to wireless office
Domain net is carried out data transmission using suitable downlink transfer link, it is ensured that the accuracy and reliability of communication.
Fig. 9 is referred to, the wireless communication system of embodiment of the present invention includes WLAN and terminal.Thus, wireless
Detection of the communication system based on terminal steady state selects suitable downlink transfer link so as to WLAN, improves wireless
The efficiency of transmission of communication system, reduces time delay.
In the description of this specification, reference term " embodiment ", " some embodiments ", " schematically enforcement
The description of mode ", " example ", " specific example " or " some examples " etc. means the tool described with reference to the embodiment or example
Body characteristicses, structure, material or feature are contained at least one embodiment or example of the present invention.In this manual,
Identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.And, the specific features of description, knot
Structure, material or feature can be combined in one or more any embodiment or example in an appropriate manner.
In flow chart or here any process described otherwise above or method description are construed as, expression includes
It is one or more for realizing specific logical function or process the step of the module of code of executable instruction, fragment or portion
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein the suitable of shown or discussion can not be pressed
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
It is during each functional unit in various embodiments of the present invention can be integrated in a processing module, or each
Individual unit is individually physically present, it is also possible to which two or more units are integrated in a module.Above-mentioned integrated module was both
Can be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.
Although embodiments of the present invention have been shown and described above, it is to be understood that above-mentioned embodiment is
Exemplary, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be right
Above-mentioned enforcement is implemented be changed, change, replacing and modification.
Claims (14)
1. a kind of control method of visible ray downlink communication Detection of Stability, for controlling WLAN, it is characterised in that institute
Stating WLAN includes WAP and light source, and the control method is comprised the following steps：
Judge whether to receive the information in metastable state with the terminal feedback of the wireless LAN communication；
The light source transmission signal light is controlled when described information is received with by visible optical link and the terminal communication, institute
State terminal the flashlight is detected to obtain the link parameter of visible optical link, and by Radio Link to the WAP
Send the link parameter；With
Downlink communication is carried out with the terminal using visible optical link when described information is not received.
2. control method as claimed in claim 1, it is characterised in that the letter in metastable state of the terminal feedback
Breath includes feeding back described information using Radio Link.
3. control method as claimed in claim 1, it is characterised in that the parameter of the visible optical link includes the visible ray
The signal to noise ratio and signal strength signal intensity of link.
4. control method as claimed in claim 1, it is characterised in that the control method also includes step：
Judge the link parameter of the visible optical link whether more than predetermined threshold value；With
Parameter when the link parameter of the visible optical link is more than predetermined threshold value according to the visible optical link will correspondence speed
The communication data of rate distributes to the visible optical link.
5. a kind of control device of visible ray downlink communication Detection of Stability, for controlling WLAN, it is characterised in that institute
Stating WLAN includes WAP and light source, and the control device includes：
First judge module, first judge module are used to judge whether to receive the terminal with the wireless LAN communication
The information in metastable state of feedback；
First processing module, the first processing module for controlling the light source transmission signal light when described information is received
So that by visible optical link and the terminal communication, the link that the terminal detects the flashlight to obtain visible optical link is joined
Number, and the link parameter is sent to the WAP by Radio Link；With
Second processing module, the Second processing module for when described information is not received using visible optical link with it is described
Terminal carries out downlink communication.
6. control device as claimed in claim 5, it is characterised in that the control device also includes：
Whether second judge module, second judge module are used for the link parameter for judging the visible optical link more than default
Threshold value；With
Distribute module, the distribute module for the link parameter in the visible optical link be more than predetermined threshold value when according to described
It can be seen that the communication data of corresponding speed is distributed to the visible optical link by the parameter of optical link.
7. a kind of WLAN, it is characterised in that including the control device described in claim 5 or 6.
8. a kind of control method of visible ray downlink communication Detection of Stability, uses the terminal of WLAN for control, its
It is characterised by, the WLAN includes WAP and light source, the control method is comprised the following steps：
Judge the terminal whether in metastable state；
Control the terminal to enter with the WLAN using Radio Link when the terminal is not in metastable state
Row downlink communication；
The user terminal is controlled when the terminal is in metastable state the flashlight of the light source transmitting is detected with logical
Visible optical link and the wireless LAN communication are crossed, and obtains the link parameter of visible optical link；
Process the flashlight to initialize the visible optical link；With
Control the user terminal and the link parameter is sent to the WAP by Radio Link.
9. control method as claimed in claim 8, it is characterised in that the terminal includes 3-axis acceleration sensor, described
Judging, whether the terminal includes three, the terminal being detected using the 3-axis acceleration sensor in metastable state
The acceleration in direction with judge the terminal whether in metastable state.
10. control method as claimed in claim 8, it is characterised in that the process flashlight with initialize it is described can
See that optical link includes following sub-step：
Judge the signal strength signal intensity of the flashlight that the terminal is received whether more than predetermined value；
The synchronous threshold value of the visible optical link is improved when the signal strength signal intensity of the flashlight is more than the predetermined value；With
The intensity of the signal reduces the synchronous threshold value of the visible optical link when being less than or equal to the predetermined value.
A kind of 11. control devices of visible ray downlink communication Detection of Stability, use the terminal of WLAN for control, its
It is characterised by, the WLAN includes WAP and light source, the control device includes：
Whether the 3rd judge module, the 3rd judge module are used to judge the terminal in metastable state；
3rd processing module, the 3rd processing module are adopted for the terminal when the terminal is not in metastable state
Downlink communication is carried out with the WLAN with Radio Link；
Fourth processing module, the fourth processing module for the terminal be in metastable state when control the user
Terminal detects the flashlight of the light source transmitting to pass through visible optical link and the wireless LAN communication, and obtains visible ray
The link parameter of link；
5th processing module, the 5th processing module are used to process the flashlight to initialize the visible optical link；With
Feedback module, the feedback module are sent to the WAP by Radio Link for controlling the user terminal
The link parameter.
12. control devices as claimed in claim 11, it is characterised in that the 3rd processing module includes：
4th judge module, the 4th judge module are used for the signal strength signal intensity of the flashlight for judging that the terminal is received
Whether predetermined value is more than；
First adjusting module, first adjusting module for the signal strength signal intensity of the flashlight be more than the predetermined value when carry
The same threshold values of the high visible optical link；With
Second adjusting module, second adjusting module are dropped when being less than or equal to the predetermined value for the intensity in the signal
The synchronous threshold value of the low visible optical link.
13. a kind of terminals, it is characterised in that the terminal includes the control device described in claim 11 or 12.
14. a kind of wireless communication systems, it is characterised in that include：
WLAN described in claim 7；With
Terminal described in claim 13.
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| CN113766522A (en) * | 2021-09-30 | 2021-12-07 | 中国电信股份有限公司 | VLC-RF heterogeneous network deployment method, device, equipment and medium based on room division system |
| CN115087063A (en) * | 2021-03-15 | 2022-09-20 | 中国移动通信有限公司研究院 | Optical communication link state feedback method, receiving method, device and equipment |
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| CN103427903A (en) * | 2013-08-14 | 2013-12-04 | 东南大学 | Visible light communication system based on wireless access point |
| CN105553553A (en) * | 2015-12-24 | 2016-05-04 | 南京邮电大学 | Network transmission scheme based on joint of VLC (Visible Light Communication) and WiFi |
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| CN103427903A (en) * | 2013-08-14 | 2013-12-04 | 东南大学 | Visible light communication system based on wireless access point |
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| CN106549708B (en) | 2019-04-19 |
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