CN106455118A - Screen projection device and method - Google Patents
Screen projection device and method Download PDFInfo
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- CN106455118A CN106455118A CN201610873013.9A CN201610873013A CN106455118A CN 106455118 A CN106455118 A CN 106455118A CN 201610873013 A CN201610873013 A CN 201610873013A CN 106455118 A CN106455118 A CN 106455118A
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- wap
- softap
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- 238000000060 site-specific infrared dichroism spectroscopy Methods 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 9
- 238000010295 mobile communication Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 7
- 238000012546 transfer Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
- H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
- H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43637—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a screen projection device and method. The device comprises a selection module which is used for selecting a channel with low current location interference after a source starts a SoftAP mode; a connection module which is used for establishing SoftAP connection with a sink by employing the selected channel; and a projection module which is used for carrying out screen projection with the sink based on the SoftAP connection. According to the screen projection device provided by the embodiment of the invention, the SoftAP mode of the source is started, the screen projection is carried out based on the SoftAP connection established between the source and the sink, so the source can carry out channel optimization before the SoftAP connection is established, the channel with the low current location interference is selected, the selected channel is kept from conflicting with the channels employed by other nearby wireless access points to the greatest extent, the channel interference in the follow-up screen projection process is reduced, the data transmission speed and stability are improved, a delay phenomenon is kept from occurring on a projection image, the screen projection fluency is ensured, and the projection experience of a user is improved.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of screen prjection apparatus and method.
Background technology
Wireless Fidelity shows that (WiFi Display, WFD) technology is that one kind enables the transmitting terminals such as smart mobile phone, notebook
Enough technology being wirelessly connected with receiving terminals such as TV, display.During screen prjection is carried out by WFD, transmitting terminal incite somebody to action this
The screen image of machine as the receiving terminal that is sent to of data for projection persistence, the reception data for projection of receiving terminal also persistence, and
The screen image of transmitting terminal is reproduced on the screen of the machine.
Existing screen prjection method, be based on wifi-direct agreement and RTSP (Real Time Streaming
Protocol, real time streaming transport protocol) carry out what the mode of real time flow medium relay was realized, set up even by wifi-direct
When connecing, wifi channel is pre-set, it is impossible to changed according to actual scene automatically.
At present, either residential quarter, Office Area or public arena, are all covered by mobile network, wifi network, one
May just there be multiple WAPs in region, and the conventional channel of wifi network is generally only 1,6,11 three channels, therefore, respectively
Between individual wireless network, very possible generation channel confliction, larger so as to channel disturbance during causing screen prjection, reduces
The speed and stability of data transfer so that Caton phenomenon occurs in projected picture, affects the fluency of screen prjection, reduces use
Family is experienced.
Content of the invention
Present invention is primarily targeted at proposing a kind of screen prjection apparatus and method, it is intended to solve to reduce screen prjection mistake
Channel disturbance in journey.
For achieving the above object, the present invention proposes a kind of screen prjection device, and described device includes：
Selecting module, for after transmitting terminal starts SoftAP pattern, the channel for selecting current location interference little；
Link block, is connected for setting up SoftAP using the channel of selection and receiving terminal；
Projection module, carries out screen prjection for being connected based on the SoftAP with the receiving terminal.
Further, the selecting module includes：
Position acquisition unit, for obtaining the position that the transmitting terminal is currently located；
Channel assignment unit, for selecting, according to the position, the channel locally not used.
Further, the selecting module includes：
Channel use information acquiring unit, for obtaining the channel use information of the WAP of current location；
Channel assignment unit, for selecting the minimum channel of utilization rate according to the channel use information.
Further, the channel use information acquiring unit is used for：
The information of the WAP of the current location that scans before starting SoftAP pattern is obtained, from the wireless access
The channel use information of the WAP is obtained in the information of point.
Further, the channel use information acquiring unit is used for：
Starting STA mode, the WAP of current location is scanned, the channel of the WAP is obtained using letter
Breath.
The present invention proposes a kind of screen prjection method simultaneously, the method comprising the steps of：
After transmitting terminal starts SoftAP pattern, the little channel of selection current location interference；
The transmitting terminal is set up SoftAP using the channel of selection with receiving terminal and is connected；
The transmitting terminal is connected based on the SoftAP with the receiving terminal carries out screen prjection.
Further, interference little channel in the selection current location includes：
Obtain the position that the transmitting terminal is currently located；
According to the channel that the position selects locally not use.
Further, interference little channel in the selection current location includes：
Obtain the channel use information of the WAP of current location；
The minimum channel of utilization rate is selected according to the channel use information.
Further, the channel use information of the WAP of the acquisition current location includes：
Obtain the information of the WAP of the current location that scans before starting SoftAP pattern；
The channel use information of the WAP is obtained from the information of the WAP.
Further, the channel use information of the WAP of the acquisition current location includes：
Starting STA mode, the WAP of current location is scanned, the channel of the WAP is obtained using letter
Breath.
A kind of screen prjection device that the embodiment of the present invention is proposed, by starting the SoftAP pattern of transmitting terminal, is based on
The SoftAP that transmitting terminal is set up with receiving terminal is connected carries out screen prjection, so that transmitting terminal can set up SoftAP connection
Before to carry out channel preferred, select a little channel of current location interference, prevent from as far as possible making with other WAPs neighbouring
Channel produces conflict, reduces the channel disturbance in screen subsequent projection process, improves the speed of data transfer and steady
Qualitative, it is to avoid the phenomenon of interim card occurs in projected picture, it is ensured that the fluency of screen prjection, improves the Projection Body of user
Test.And, more old wifi module is not supported to the equipment of wifi-direct connection also can be by setting up SoftAP
Connect screen prjection is realized, expanded the range of application of screen prjection.
Description of the drawings
Fig. 1 is the hardware architecture diagram for realizing the optional mobile terminal of each embodiment of the present invention one；
Fig. 2 is the wireless communication system schematic diagram of mobile terminal as shown in Figure 1；
Fig. 3 is the flow chart of the screen prjection method of first embodiment of the invention；
Fig. 4 is the particular flow sheet that in the embodiment of the present invention, transmitting terminal carries out the preferred step of channel；
Fig. 5 is the another particular flow sheet that in the embodiment of the present invention, transmitting terminal carries out the preferred step of channel；
Fig. 6 is the another particular flow sheet that in the embodiment of the present invention, transmitting terminal carries out the preferred step of channel；
Fig. 7 is that in the embodiment of the present invention, transmitting terminal sets up particular flow sheet the step of SoftAP is connected with receiving terminal；
Fig. 8 is the module diagram of the screen prjection device of second embodiment of the invention；
Fig. 9 is the module diagram of the selecting module of screen prjection device in Fig. 8；
Figure 10 is the another module diagram of the selecting module of screen prjection device in Fig. 8.
The realization of the object of the invention, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
It should be appreciated that specific embodiment described herein is not intended to limit the present invention only in order to explain the present invention.
The mobile terminal of each embodiment of the present invention is realized referring now to Description of Drawings.In follow-up description, use
For representing the suffix of such as " module ", " part " or " unit " of element only for being conducive to the explanation of the present invention, itself
Not specific meaning.Therefore, " module " mixedly can be used with " part ".
Mobile terminal can be implemented in a variety of manners.For example, the terminal described in the present invention can include such as to move
Phone, smart phone, notebook computer, digit broadcasting receiver, PDA (personal digital assistant), PAD (panel computer), PMP
The mobile terminal of (portable media player), guider etc. and such as numeral TV, desk computer etc. consolidate
Determine terminal.Hereinafter it is assumed that terminal is mobile terminal.However, it will be understood by those skilled in the art that, except being used in particular for movement
Outside the element of purpose, construction according to the embodiment of the present invention can also apply to the terminal of fixed type.
Fig. 1 is that the hardware configuration of an optional mobile terminal for realizing each embodiment of the present invention is illustrated.
Mobile terminal 1 00 can include wireless communication unit 110, A/V (audio/video) input block 120, user input
Unit 130, sensing unit 140, output unit 150, memorizer 160, interface unit 170, controller 180 and power subsystem 190
Etc..Fig. 1 shows the mobile terminal with various assemblies, it should be understood that being not required for implementing all groups for illustrating
Part.More or less of component can alternatively be implemented.Will be discussed in more detail below the element of mobile terminal.
Wireless communication unit 110 generally includes one or more assemblies, and which allows mobile terminal 1 00 and wireless communication system
Or the radio communication between network.For example, wireless communication unit can include broadcasting reception module 111, mobile communication module
112nd, at least one of wireless Internet module 113, short range communication module 114 and location information module 115.
Broadcasting reception module 111 receives broadcast singal and/or broadcast via broadcast channel from external broadcast management server
Relevant information.Broadcast channel can include satellite channel and/or terrestrial channel.Broadcast management server can be generated and sent
The broadcast singal for generating before the server or reception of broadcast singal and/or broadcast related information and/or broadcast related information
And send it to the server of terminal.Broadcast singal can include TV broadcast singal, radio signals, data broadcasting
Signal etc..And, broadcast singal may further include the broadcast singal for combining with TV or radio signals.Broadcast phase
Pass information can also be provided via mobile communications network, and in this case, broadcast related information can be by mobile communication mould
Block 112 is receiving.Broadcast singal can be present in a variety of manners, and for example, which can be with the electronics of DMB (DMB)
The form of program guide (EPG), the electronic service guidebooks (ESG) of digital video broadcast-handheld (DVB-H) etc. and exist.Broadcast
Receiver module 111 can receive signal broadcast by using various types of broadcast systems.Especially, broadcasting reception module 111
Can be wide by using such as multimedia broadcasting-ground (DMB-T), DMB-satellite (DMB-S), digital video
Broadcast-hand-held (DVB-H), forward link media (MediaFLO@) Radio Data System, received terrestrial digital broadcasting integrated service
Etc. (ISDB-T) digit broadcasting system receives digital broadcasting.Broadcasting reception module 111 may be constructed such that and be adapted to provide for extensively
Broadcast the various broadcast systems of signal and above-mentioned digit broadcasting system.Via broadcasting reception module 111 receive broadcast singal and/
Or broadcast related information can be stored in memorizer 160 (or other types of storage medium).
Mobile communication module 112 sends radio signals to base station (for example, access point, node B etc.), exterior terminal
And at least one of server and/or receive from it radio signal.Such radio signal can be logical including voice
Words signal, video calling signal or the various types of data for sending and/or receiving according to text and/or Multimedia Message.
Wireless Internet module 113 supports the Wi-Fi (Wireless Internet Access) of mobile terminal.The module can be internally or externally
It is couple to terminal.Wi-Fi (Wireless Internet Access) technology involved by the module can include WLAN (WLAN) (Wi-Fi), Wibro
(WiMAX), Wimax (worldwide interoperability for microwave accesses), HSDPA (high-speed downlink packet access) etc..
Short range communication module 114 be for supporting the module of junction service.Some examples of short-range communication technology include indigo plant
ToothTM, RF identification (RFID), Infrared Data Association (IrDA), ultra broadband (UWB), purple honeybeeTMEtc..
Location information module 115 be for check or obtain mobile terminal positional information module.Location information module
Typical case be GPS (global positioning system).According to current technology, GPS module 115 is calculated from three or more satellites
Range information and correct time information and for calculate Information application triangulation, so as to according to longitude, latitude
Three-dimensional current location information is highly accurately calculated.Currently, defended using three for calculating the method for position and temporal information
Star and the error of the position that calculated by using other satellite correction and temporal information.Additionally, GPS module 115
Can be by Continuous plus current location information in real time come calculating speed information.
A/V input block 120 is used for receiving audio or video signal.A/V input block 120 can include 121 He of camera
Mike 122,121 pairs of static images for being obtained by image capture apparatus in Video Capture pattern or image capture mode of camera
Or the view data of video is processed.Picture frame after process is may be displayed on display module 151.Process through camera 121
Picture frame afterwards can be stored in memorizer 160 (or other storage mediums) or carry out sending out via wireless communication unit 110
Send, two or more cameras 121 can be provided according to the construction of mobile terminal.Mike 122 can be in telephone calling model, note
Sound (voice data) is received via mike in record pattern, speech recognition mode etc. operational mode, and can be by so
Acoustic processing be voice data.Audio frequency (voice) data after process can be converted in the case of telephone calling model can
The form output of mobile communication base station is sent to via mobile communication module 112.Mike 122 can implement various types of making an uproar
Sound eliminates (or suppression) algorithm to eliminate the noise or do that (or suppression) is produced during receiving and sending audio signal
Disturb.
User input unit 130 can generate key input data to control each of mobile terminal according to the order of user input
Plant operation.User input unit 130 allows the various types of information of user input, and can include keyboard, metal dome, touch
Plate (resistance that for example, detection causes due to being touched, pressure, the sensitive component of the change of electric capacity etc.), roller, rocking bar etc.
Deng.Especially, when touch pad is superimposed upon on display module 151 as a layer, touch screen can be formed.
Sensing unit 140 detect mobile terminal 1 00 current state, (for example, mobile terminal 1 00 open or close shape
State), the position of mobile terminal 1 00, user for mobile terminal 1 00 the presence or absence of contact (that is, touch input), mobile terminal
100 orientation, the acceleration or deceleration movement of mobile terminal 1 00 and direction etc., and generate for controlling mobile terminal 1 00
The order of operation or signal.For example, when mobile terminal 1 00 is embodied as sliding-type mobile phone, sensing unit 140 can be sensed
The sliding-type phone is opened or is cut out.In addition, sensing unit 140 can detect power subsystem 190 whether provide electric power or
Whether person's interface unit 170 is coupled with external device (ED).Interface unit 170 is as at least one external device (ED) and mobile terminal 1 00
The interface that connection can pass through.For example, external device (ED) can include wired or wireless head-band earphone port, external power source (or
Battery charger) port, wired or wireless FPDP, memory card port, the end for device of the connection with identification module
Mouth, audio input/output (I/O) port, video i/o port, ear port etc..Identification module can be storage for verifying
User using mobile terminal 1 00 various information and can include subscriber identification module (UIM), client identification module (SIM),
Universal Subscriber identification module (USIM) etc..In addition, the device (hereinafter referred to as " identifying device ") with identification module can be adopted
The form of smart card is taken, therefore, identifying device can be connected with mobile terminal 1 00 via port or other attachment means.Interface
Unit 170 can be used for receiving from the input (for example, data message, electric power etc.) of external device (ED) and defeated by received
Enter to be transferred to the one or more elements in mobile terminal 1 00 or can be used for transmitting between mobile terminal and external device (ED)
Data.
In addition, when mobile terminal 1 00 is connected with external base, interface unit 170 can serve as allowing by which by electricity
Power provides the path of mobile terminal 1 00 from base or can serve as allowing the various command signals from base input to pass through which
It is transferred to the path of mobile terminal.The various command signals being input into from base or electric power may serve as recognizing that mobile terminal is
The no signal being accurately fitted within base.Output unit 150 is configured to defeated with the offer of vision, audio frequency and/or tactile manner
Go out signal (for example, audio signal, video signal, alarm signal, vibration signal etc.).Output unit 150 can include to show
Module 151, dio Output Modules 152, alarm modules 153 etc..
Display module 151 may be displayed on the information for processing in mobile terminal 1 00.For example, when mobile terminal 1 00 is in electricity
During words call mode, display module 151 can show and call or other communicate (for example, text messaging, multimedia files
Download etc.) related user interface (UI) or graphic user interface (GUI).When mobile terminal 1 00 is in video calling pattern
Or during image capture mode, display module 151 can show the image of capture and/or the image of reception, illustrate video or figure
UI or GUI of picture and correlation function etc..
Meanwhile, when the display module 151 and touch pad touch screen with formation superposed on one another as a layer, display module
151 can serve as input equipment and output device.Display module 151 can include liquid crystal display (LCD), thin film transistor (TFT)
In LCD (TFT-LCD), Organic Light Emitting Diode (OLED) display, flexible display, three-dimensional (3D) display etc. at least
A kind of.Some in these display may be constructed such that transparence to allow user from outside viewing, and this is properly termed as transparent
Display, typical transparent display can be, for example, TOLED (transparent organic light emitting diode) display etc..According to specific
The embodiment that wants, mobile terminal 1 00 can include two or more display modules (or other display devices), for example, move
Dynamic terminal can include outside display module (not shown) and internal display module (not shown).Touch screen can be used for detection and touch
Input pressure and touch input position and touch input area.
Dio Output Modules 152 can mobile terminal in call signal reception pattern, call mode, logging mode,
When under the isotypes such as speech recognition mode, broadcast reception mode, that wireless communication unit 110 is received or in memorizer 160
The voice data transducing audio signal of middle storage and it is output as sound.And, dio Output Modules 152 can be provided and movement
The audio output (for example, call signal receives sound, message sink sound etc.) of the specific function correlation that terminal 100 is executed.
Dio Output Modules 152 can include speaker, buzzer etc..
Alarm modules 153 can provide output to notify event to mobile terminal 1 00.Typical event is permissible
Including calling reception, message sink, key signals input, touch input etc..In addition to audio or video output, alarm modules
153 can provide output in a different manner with the generation of notification event.For example, alarm modules 153 can be in the form of vibration
Output is provided, when calling, message or some other entrance communication (incomingcommunication) are received, alarm mould
Block 153 can provide tactile output (that is, vibrating) to notify to user.By providing such tactile output, even if
When the mobile phone of user is in the pocket of user, user also can recognize that the generation of various events.Alarm modules 153
The output of the generation of notification event can be provided via display module 151 or dio Output Modules 152.
Memorizer 160 can store software program for the process and control operation for being executed by controller 180 etc., Huo Zheke
Temporarily to store oneself data (for example, telephone directory, message, still image, video etc.) through exporting or will export.And
And, memorizer 160 can be with storage with regard to the vibration of various modes that exports when touching and being applied to touch screen and audio signal
Data.
Memorizer 160 can include the storage medium of at least one type, and the storage medium includes flash memory, hard disk, many
Media card, card-type memorizer (for example, SD or DX memorizer etc.), random access storage device (RAM), static random-access storage
Device (SRAM), read only memory (ROM), Electrically Erasable Read Only Memory (EEPROM), programmable read only memory
(PROM), magnetic storage, disk, CD etc..And, mobile terminal 1 00 can execute memorizer with by network connection
The network storage device cooperation of 160 store function.
Controller 180 generally controls the overall operation of mobile terminal.For example, controller 180 is executed and voice call, data
The related control of communication, video calling etc. and process.In addition, controller 180 can be included for reproducing (or playback) many matchmakers
The multi-media module 181 of volume data, multi-media module 181 can be constructed in controller 180, or it is so structured that and control
Device 180 is separated.Controller 180 can be with execution pattern identifying processing, by the handwriting input for executing on the touchscreen or picture
Draw input and be identified as character or image.
Power subsystem 190 receives external power or internal power under the control of controller 180 and provides operation each unit
Appropriate electric power needed for part and component.
Various embodiments described herein can be with using such as computer software, hardware or its any combination of calculating
Machine computer-readable recording medium is implementing.Hardware is implemented, embodiment described herein can be by using application-specific IC
(ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), scene can
Program gate array (FPGA), processor, controller, microcontroller, microprocessor, be designed to execute function described herein
At least one in electronic unit is implementing, and in some cases, such embodiment can be implemented in controller 180.
Software is implemented, the embodiment of such as process or function can with allow to execute the single of at least one function or operation
Software module is implementing.Software code can be come by the software application (or program) that is write with any appropriate programming language
Implement, software code can be stored in memorizer 160 and be executed by controller 180.
So far, oneself is through describing mobile terminal according to its function.The present invention can be applied to such as folded form, board-type,
Various types of mobile terminals such as oscillating-type, sliding-type.
As shown in Figure 1 mobile terminal 1 00 may be constructed such that using via frame or packet transmission data all if any
Line and wireless communication system and satellite-based communication system are operating.
Referring now to the communication system that Fig. 2 description is wherein operable to according to the mobile terminal of the present invention.
Such communication system can use different air interfaces and/or physical layer.For example, used by communication system
Air interface includes such as frequency division multiple access (FDMA), time division multiple acess (TDMA), CDMA (CDMA) and universal mobile communications system
System (UMTS) (especially, Long Term Evolution (LTE)), global system for mobile communications (GSM) etc..As non-limiting example, under
The description in face is related to cdma communication system, but such teaching is equally applicable to other types of system.
With reference to Fig. 2, cdma wireless communication system can include multiple mobile terminal 1s 00, multiple base stations (BS) 270, base station
Controller (BSC) 275 and mobile switching centre (MSC) 280.MSC280 is configured to and Public Switched Telephony Network (PSTN)
290 form interface.MSC280 is also structured to form interface with the BSC275 that can be couple to base station 270 via back haul link.
If back haul link can be constructed according to any one in the interface that Ganji knows, the interface includes such as E1/T1, ATM, IP,
PPP, frame relay, HDSL, ADSL or xDSL.It will be appreciated that system can include multiple BSC275 as shown in Figure 2.
Each BS270 can service one or more subregions (or region), by multidirectional antenna or the day of sensing specific direction
Each subregion that line is covered is radially away from BS270.Or, each subregion can by for diversity reception two or more
Antenna is covered.Each BS270 may be constructed such that the multiple frequency distribution of support, and each frequency is distributed with specific frequency spectrum
(for example, 1.25MHz, 5MHz etc.).
Intersecting that subregion and frequency are distributed can be referred to as CDMA Channel.BS270 can also be referred to as base station transceiver
System (BTS) or other equivalent terms.In this case, term " base station " can be used for broadly representing single
BSC275 and at least one BS270.Base station can also be referred to as " cellular station ".Or, each subregion of specific BS270 can be claimed
For multiple cellular stations.
As shown in Figure 2, broadcast singal is sent to broadcsting transmitter (BT) 295 mobile terminal that operate in system
100.Broadcasting reception module 111 is arranged on to receive the broadcast for being sent by BT295 at mobile terminal 1 00 as shown in Figure 1
Signal.In fig. 2 it is shown that several global positioning system (GPS) satellite 300.Satellite 300 helps position multiple mobile terminals
At least one of 100.
In fig. 2, multiple satellites 300 are depicted, but it is to be understood that, it is possible to use any number of satellite is obtained to be had
Location information.GPS module 115 is generally configured to coordinate with satellite 300 to obtain the positioning that wants as shown in Figure 1
Information.Substitute GPS tracking technique or outside GPS tracking technique, it is possible to use can track the position of mobile terminal its
Its technology.In addition, at least one gps satellite 300 can optionally or additionally process satellite dmb transmission.
Used as a typical operation of wireless communication system, BS270 receives the reverse link from various mobile terminal 1s 00
Signal.Mobile terminal 1 00 generally participates in call, information receiving and transmitting and other types of communication.Each of the reception of certain base station 270 is anti-
Processed in specific BS270 to link signal.The data of acquisition are forwarded to the BSC275 of correlation.BSC provides call
Resource allocation and the mobile management function of the coordination including the soft switching process between BS270.BSC275 is also by the number for receiving
According to being routed to MSC280, which provides the extra route service for forming interface with PSTN290.Similarly, PSTN290 with
MSC280 forms interface, and MSC and BSC275 forms interface, and BSC275 correspondingly controls BS270 with by forward link signals
It is sent to mobile terminal 1 00.
Based on above-mentioned mobile terminal hardware configuration and communication system, the screen prjection method and apparatus for proposing the present invention is each
Individual embodiment, the screen prjection method and apparatus of the present invention is applied to above-mentioned mobile terminal, particularly mobile phone.
The screen prjection method and apparatus of the embodiment of the present invention, refers mainly to the screen prjection method and apparatus based on WFD, when
Can also be so the screen prjection method and apparatus based on other screen prjection technology, the present invention is not construed as limiting to this, is below led
To be described in detail by taking WFD technology as an example.
In the embodiment of the present invention, when two terminals carry out screen prjection, one of terminal is transmitting terminal (Source),
For being sent out data for projection, another terminal is receiving terminal (Sink), for receiving data for projection and exporting.Alternatively,
Can also be that multiple terminals carry out screen prjection, it is receiving terminal that one of terminal is transmitting terminal, remaining terminal；Or, wherein
One terminal is receiving terminal, and remaining terminal is transmitting terminal.Aforementioned terminals can be the mobile terminals such as mobile phone, flat board, or
The big screen equipment such as television set, display.
Embodiment one
As shown in figure 3, proposing the screen prjection method of first embodiment of the invention, the method comprising the steps of：
After S11, transmitting terminal start SoftAP pattern, the little channel of selection current location interference.
In the embodiment of the present invention, can by transmitting terminal when meeting pre-conditioned automatic SoftAP pattern, it is also possible to
SoftAP pattern is manually booted by user, such as manually opened SoftAP mode switch etc..
Alternatively, when transmitting terminal receives the projection instruction for sending data, then automatic SoftAP pattern.For example, eventually
End starts screen prjection application, shows button or the pattern for sending data and receiving data, sends pressing for data when user clicks on
When button or pattern, terminal then receives the projection instruction for sending data, immediately with the identity automatic wifi module of transmitting terminal
SoftAP pattern.
In certain embodiments, the projection instruction for sending data can also be embedded in the interface of other application, such as video
Play application, demonstration application, e-book application etc. so that user can play video, browse demonstration document, reading electronic book
Deng during at any time issue projection instruction carry out screen prjection.
In this step S11, after transmitting terminal starts SoftAP pattern, the little channel of current location interference is selected first, with
Reduce the channel disturbance in screen subsequent projection process so that data transfer is more quick and smooth, it is to avoid during screen prjection
There is the problem of interim card, lift Consumer's Experience.
The little channel of interference described in the embodiment of the present invention, it can be understood as the minimum channel of utilization rate in current location
One of, such as the minimum channel of current location utilization rate, the channel locally not used (equivalent to utilization rate are 0) etc..
Specifically, can to carry out channel by following two modes preferred for transmitting terminal：
Mode one：The position that transmitting terminal is currently located is obtained, according to the letter that the position being currently located selects locally not use
Road, equivalent in the channel that current location utilization rate is 0.
When being embodied as, transmitting terminal can pass through locating module (as GPS) and/or network (wlan network and/or mobile network
Network) obtaining the position being currently located, then determine the country being currently located according to the position being currently located, due to per
Individual country can select to use a part of channel according to local feature, and another part channel is refused to use, therefore permissible
The channel that the country that is currently located does not use is obtained, then a therefrom optional channel, so as to ensure that selection
The channel that will not use with other WAPs of current location of channel mutually conflict so that channel disturbance is almost nil.
Mode two：The channel use information of the WAP of current location is obtained, selects to make according to channel use information
With the channel that rate is minimum.
As shown in figure 4, in one embodiment, the idiographic flow of transmitting terminal preferred channel is as follows：
The information of the WAP of the current location that S101, acquisition are scanned before starting SoftAP pattern.
In this programme, transmitting terminal was needed in STA mode (the i.e. acquiescence mould of wifi module before SoftAP pattern is started
Formula), the hotspot of current location is scanned under STA mode.Transmitting terminal can start SoftAP pattern before (or start
During SoftAP pattern or afterwards) obtain its current location that scans under STA mode hotspot information.
S102, from the information of WAP obtain WAP channel use information.
Transmitting terminal obtains the channel that each WAP is used respectively from the information of WAP, so as to obtain no
The channel use information of line access point.
S103, the minimum channel of utilization rate is selected according to the channel use information of WAP.
Specifically, transmitting terminal counts the utilization rate of each channel according to the channel use information of WAP, finally from
Select the minimum channel of utilization rate in the channel that the WAP of in alternative channel or current location is used, so as to reduce with
The channel confliction of other WAPs, reduces the interference of channel.Alternatively, when the minimum channel of utilization rate at least two
When individual, can therefrom optional one, or the channel for therefrom selecting highest priority.
For example, it is assumed that with 1,6,11 three conventional channels of wifi network alternately channel, scanning is equipped with to present bit
Five WAPs, two of which WAP uses channel 1, and two WAPs use channel 6, and one wirelessly connects
Access point uses channel 11, and statistics show that the utilization rate of channel 11 is minimum, therefore selects channel 11.
And for example, it is assumed that with 1,3,6,8,11 five channel for alternative channel, scanning is equipped with eight wireless access to present bit
Point, wherein three WAPs use channel 1, and three WAPs use channel 6, and two WAPs use channel
11, without WAP using channel include 3 and 8 two channels, transmitting terminal can be appointed from two idle channels
Select a channel, or the channel for therefrom selecting highest priority.
As shown in figure 5, in another embodiment, the idiographic flow of transmitting terminal preferred channel is as follows：
S201, startup STA mode.
S202, the WAP of scanning current location, obtain the channel use information of WAP.
S203, the minimum channel of utilization rate is selected according to the channel use information of WAP.
In this programme, the STA mode of transmitting terminal automatic wifi module, is scanned under STA mode by wifi module
The WAP of current location, obtains the channel that each WAP is used respectively, and the channel for obtaining WAP makes
With information, according to the channel use information of WAP, the utilization rate of each channel is counted, finally from present bit alternative channel
The minimum channel of utilization rate is selected in the channel that the WAP that puts is used.
When transmitting terminal does not support SoftAP pattern and STA mode both of which coexists, after STA mode is started,
SoftAP pattern can be automatically switched off, therefore, after step S203, in addition it is also necessary to restart SoftAP pattern, start SoftAP mould
After formula, STA mode is then automatically switched off.
In this programme, even if transmitting terminal does not start STA mode before starting SoftAP pattern, it is also possible to carry out channel excellent
Choosing.
As shown in fig. 6, in another specific embodiment, the idiographic flow of transmitting terminal preferred channel is as follows：
S301, judge transmitting terminal whether in STA mode before SoftAP pattern is started.If so, step is then entered
S302；If it is not, then entering step S304.
The information of the WAP of the current location that S302, acquisition are scanned before starting SoftAP pattern.
S303, from the information of WAP obtain WAP channel use information.
S304, startup STA mode.
S305, the WAP of scanning current location, obtain the channel use information of WAP.
S306, the minimum channel of utilization rate is selected according to the channel use information of WAP.
Both of the aforesaid scheme is combined by this programme, when transmitting terminal was in STA mode before SoftAP pattern is started
When, then the information of direct access WAP, quickly carries out channel preferred；When transmitting terminal start SoftAP pattern before not
In STA mode when, it is also possible to obtain the information of WAP by automatic STA mode, and then it be excellent to realize channel
Choosing.
S12, transmitting terminal are set up SoftAP using the channel of selection with receiving terminal and are connected.
Specifically, transmitting terminal is arranged on wifi channel on the channel of selection, regular immediately available as WAP (AP)
Beacon (beacon) frame (carry the SSID of itself association) is outwards broadcasted.Receiving terminal finds network by intercepting Beacon frame, to
Transmitting terminal sends connection request.After transmitting terminal receives the connection request of receiving terminal, immediately, receiving terminal is to transmitting terminal application
IP address and DNS information in SoftAP network, final transmitting terminal is set up SoftAP with receiving terminal and is connected.In this state
Under, transmitting terminal is equivalent to gateway, and receiving terminal is equivalent to the sub- equipment in the network segment residing for gateway.
As shown in fig. 7, in an alternative embodiment, transmitting terminal and receiving terminal set up idiographic flow that SoftAP is connected such as
Under：
Beacon frame of the outside broadcast packet of S121, transmitting terminal containing customizing messages.
In this step S121, after channel is set, transmitting terminal is periodically outwards broadcasted immediately available as WAP (AP)
Beacon (beacon) frame (carries the SSID of itself association), and adds customizing messages in Beacon frame, and the customizing messages shows this
Terminal support screen is projected, and to distinguish with other hotspot, facilitates receiving terminal to be scanned filtering, and automatic identification is set out
Sending end.
Alternatively, the customizing messages is the special sign position of the reserved field located at Beacon frame.For example, Beacon frame
The character of a reserved field be " 010101 ", transmitting terminal then changes the character of the reserved field as special sign position, such as
It is changed to " 123456 ", " 020202 ", " nubia8 " etc..
Alternatively, the customizing messages is the specific identifier for being additional to Beacon frame.For example, Beacon frame head or
The additional specific identifier of afterbody, the specific identifier such as " nubia ", " nubia-wfd ", " wfd ", " nubia01 " etc..
Alternatively, the customizing messages is the SSID in Beacon frame with specific naming rule.Specifically, SSID is set
When, add specific identifier, such as " nubia ", " nubia-wfd ", " wfd " etc..For example, it is " nubia-softap to arrange SSID
Xxx ", " direct-softap nubiaxxx " etc., wherein " xxx " are the numeral of 0-999, and receiving terminal will rely on capture
Becon frame parses SSID therein.If (there are no other around i.e. to set using the screen prjection of the method without similar SSID
Standby) just from the beginning of 001 (or 000), it is incremented by if occupied, until without occupied numeral, the use of numerical designation being a kind of
Simple naming method, can also adopt other naming methods such as letter, symbol, it is ensured that do not bear the same name i.e. in other embodiments
Can.
S122, receiving terminal find network by intercepting Beacon frame, are set out according to the customizing messages identification in Beacon frame
Sending end, sends connection request to transmitting terminal.
In this step S122, receiving terminal is scanned by wifi module as wireless terminal (station) under STA mode
WAP, and the access point for scanning is filtered, select the WAP of support screen projection.
Specifically, receiving terminal finds network by intercepting Beacon frame, may scan and arrive multiple WAPs, and parsing is each
The Beacon frame of individual wireless access point broadcasts, judges whether include customizing messages in Beacon frame, when there is customizing messages, then
The WAP for broadcasting the Beacon frame is identified as the WAP of support screen projection, and as transmitting terminal.
When similar WAP only one of which, actively connection request can be sent to the transmitting terminal, or, pointing out user to click on should
The SSID of WAP is attached, and when user clicks on the SSID, then sends connection request to transmitting terminal.
S123, transmitting terminal receive the connection request of receiving terminal, set up SoftAP with receiving terminal and are connected.
Specifically, after transmitting terminal receives connection request, ask the user whether to receive request (as ejected on a user interface
The whether dialog box of acceptance request), when user selects to receive request, that is, allow receiving terminal to be linked to current SoftAp network and enter
Row network sharing.Immediately, receiving terminal is to the IP address in transmitting terminal application SoftAP network and DNS information, final transmitting terminal
SoftAP is set up with receiving terminal to be connected.In this state, transmitting terminal is equivalent to gateway, and receiving terminal is equivalent to residing for gateway
Sub- equipment in the network segment.
In certain embodiments, receiving terminal can also add above-mentioned customizing messages in a connection request, and receiving terminal is identified
Then receive connection request automatically during above-mentioned customizing messages, set up SoftAP connection.
S13, transmitting terminal are connected based on SoftAP with receiving terminal carries out screen prjection.
Specifically, after SoftAP connection is set up, transmitting terminal passes through real time streaming transport protocol respectively with receiving terminal
(Real Time Streaming Protocol, RTSP) module sets up RTSP session connection, and last transmitting terminal is to receiving terminal
Transmission data for projection starts screen prjection.
For example, locally displayed relief area of the transmitting terminal during video is played, by RTSP module from memory module
Take out in video data, and the audio system from memory module and voice data is taken out, by coding module by video data
With voice data be packaged into RTSP code stream in the form of the Streaming Media continuous transmission to receiving terminal.Receiving terminal is connected by RTSP module
(IP address is located at the gateway address of SoftAp network to the RTSP server that sets up to transmitting terminal, and port numbers give tacit consent to end for RTSP
Mouthful), the RTSP code stream from sending ending equipment is received, is locally decoded by decoder module, this is carried out by playing module
Ground is played.Above procedure completes the screen prjection based on SoftAp connection.
The screen prjection method of the embodiment of the present invention, by start transmitting terminal SoftAP pattern, based on transmitting terminal with connect
The SoftAP connection that receiving end is set up carries out screen prjection, so that transmitting terminal can carry out channel before SoftAP connection is set up
It is preferred that, a little channel of current location interference is selected, prevents the channel for using with other WAPs neighbouring from producing as far as possible
Raw conflict, reduces the channel disturbance in screen subsequent projection process, improves speed and the stability of data transfer, it is to avoid
There is the phenomenon of interim card in projected picture, it is ensured that the fluency of screen prjection, improves the projection experience of user.And, for
More old wifi module does not support that the equipment of wifi-direct connection also can realize screen by setting up SoftAP connection
Curtain projection, has expanded the range of application of screen prjection.
Further, the Beacon frame by the outside broadcast packet of transmitting terminal containing customizing messages so that receiving terminal is by intercepting
Beacon frame simultaneously quickly recognizes transmitting terminal according to the customizing messages in Beacon frame, so as to quickly set up SoftAP with transmitting terminal
Connection.Whole connection procedure is simple and quick, substantially reduces projection starting time, reduces the waiting time of user, and not
Need excessively loaded down with trivial details user operation is introduced, improve Consumer's Experience.
Embodiment two
As shown in figure 8, proposing the screen prjection device of second embodiment of the invention, described device includes selecting module, connects
Connection module and projection module, wherein：
Selecting module：For after transmitting terminal starts SoftAP pattern, the channel for selecting current location interference little.
Specifically, after transmitting terminal starts SoftAP pattern, selecting module selects the little letter of current location interference first
Road, to reduce the channel disturbance in screen subsequent projection process so that data transfer is more quick and smooth, it is to avoid screen prjection mistake
Occur the problem of interim card in journey, lift Consumer's Experience.
As shown in figure 9, in one example, selecting module includes position acquisition unit and Channel assignment unit, wherein, position
Acquiring unit is used for obtaining the position that transmitting terminal is currently located, and Channel assignment unit is for selecting this according to the position being currently located
The channel that ground is not used.
When being embodied as, position acquisition unit can pass through locating module (as GPS) and/or network (wlan network and/or
Mobile network) obtaining the position being currently located, then Channel assignment unit determines according to the position being currently located and is currently located
Country, as each country can select to use a part of channel according to local feature, another part is believed
Road is refused to use, and therefore Channel assignment unit can obtain the channel that the country being currently located does not use, then therefrom
An optional channel, the channel that the channel so as to ensure that selection will not be used with other WAPs of current location
Mutually conflict so that channel disturbance is almost nil.
As shown in Figure 10, in another example, selecting module includes channel use information acquiring unit and Channel assignment list
Unit, wherein：
Channel use information acquiring unit：For obtaining the channel use information of the WAP of current location.
Alternatively, the current location that channel use information acquiring unit is scanned before obtaining first and starting SoftAP pattern
The information of WAP, then obtains the channel use information of WAP from the information of WAP.
Alternatively, channel use information acquiring unit starts the STA mode of wifi module first, then passes through wifi module
The WAP of scanning current location, obtains the channel use information of WAP.
When transmitting terminal does not support SoftAP pattern and STA mode both of which coexists, after STA mode is started,
SoftAP pattern can be automatically switched off, and therefore, when channel use information is obtained, channel use information acquiring unit also needs to restart
SoftAP pattern, after starting SoftAP pattern, STA mode is then automatically switched off.
Alternatively, channel use information acquiring unit first determines whether whether transmitting terminal was in before SoftAP pattern is started
STA mode；If so, the information of the WAP of current location for scanning before starting SoftAP pattern is then obtained, from wireless
The channel use information of WAP is obtained in the information of access point, so as to accelerate channel favor speed；If it is not, then starting
The STA mode of wifi module, then scans the WAP of current location by wifi module, obtains the letter of WAP
Road use information, even if also channel to be realized preferred so as to be not turned on STA mode before transmitting terminal.
Channel assignment unit：For selecting the minimum channel of utilization rate according to channel use information.
Specifically, Channel assignment unit counts the utilization rate of each channel according to the channel use information of WAP,
Last select the minimum channel of utilization rate from alternative channel or in the channel that uses of WAP of current location, so as to subtract
The little channel confliction with other WAPs, reduces channel disturbance.Alternatively, when the minimum channel of utilization rate at least
When two, Channel assignment unit can therefrom optional one, or therefrom selects the channel of highest priority.
For example, it is assumed that with 1,6,11 three conventional channels of wifi network alternately channel, scanning is equipped with to present bit
Five WAPs, two of which WAP uses channel 1, and two WAPs use channel 6, and one wirelessly connects
Access point uses channel 11, and statistics show that the utilization rate of channel 11 is minimum, therefore selects channel 11.
And for example, it is assumed that with 1,3,6,8,11 five channel for alternative channel, scanning is equipped with eight wireless access to present bit
Point, wherein three WAPs use channel 1, and three WAPs use channel 6, and two WAPs use channel
11, without WAP using channel include 3 and 8 two channels, therefore can from two idle channels optionally
One channel, or therefrom select the channel of highest priority.
Link block：It is connected for setting up SoftAP using the channel of selection and receiving terminal.
Specifically, link block is arranged on wifi channel on the channel of selection, and periodically outwards broadcast Beacon (believes immediately
Mark) frame (carrying the SSID of itself association).Receiving terminal finds network by intercepting Beacon frame, and sending connection to transmitting terminal please
Ask.Link block receives the connection request of receiving terminal, immediately, receiving terminal to the IP address in transmitting terminal application SoftAP network with
And DNS information, final transmitting terminal sets up SoftAP with receiving terminal and is connected.In this state, transmitting terminal is equivalent to gateway, and
Receiving terminal is equivalent to the sub- equipment in the network segment residing for gateway.
Projection module：Screen prjection is carried out for being connected based on SoftAP with receiving terminal.
Specifically, after SoftAP connection is set up, projection module is built by the RTSP module of transmitting terminal and receiving terminal
RTSP session connection is erected, last projection module starts screen prjection to receiving terminal transmission data for projection.
For example, transmitting terminal is during video is played, and projection module is local aobvious from memory module by RTSP module
Show that relief area is taken out in video data, and the audio system from memory module and voice data is taken out, will by coding module
Video data and voice data be packaged into RTSP code stream in the form of the Streaming Media continuous transmission to receiving terminal.Receiving terminal passes through RTSP
Module be connected to transmitting terminal foundation RTSP server (IP address be located at SoftAp network gateway address, port numbers be RTSP
Default port), the RTSP code stream from sending ending equipment is received, is locally decoded by decoder module, by playing module
Locally played.Above procedure completes the screen prjection based on SoftAp connection.
Further, in the Beacon frame that link block is outwards broadcasted, customizing messages is contained, so that receiving terminal is according to spy
Determine information to identify transmitting terminal and set up SoftAP with transmitting terminal and be connected.
Specifically, after channel is set, link block is outwards broadcasted Beacon frame immediately and (carries itself association
SSID), and Beacon frame add customizing messages, the customizing messages show this terminal support screen project, with other nothings
Line focus is distinguished, and is facilitated receiving terminal to be scanned filtering, is automatically identified transmitting terminal.
Alternatively, the customizing messages is the special sign position of the reserved field located at Beacon frame.For example, Beacon frame
The character of a reserved field be " 010101 ", link block then changes the character of the reserved field as special sign position,
" 123456 ", " 020202 ", " nubia8 " etc. are such as changed to.
Alternatively, the customizing messages is the specific identifier for being additional to Beacon frame.For example, link block is in Beacon frame
Head or the additional specific identifier of afterbody, the specific identifier such as " nubia ", " nubia-wfd ", " wfd ", " nubia01 " etc.
Deng.
Alternatively, the customizing messages is the SSID in Beacon frame with specific naming rule.Specifically, link block
When SSID is set, specific identifier, such as " nubia ", " nubia-wfd ", " wfd " etc. is added.For example, link block arranges SSID
For " nubia-softap xxx ", " direct-softap nubiaxxx " etc., wherein " xxx " is the numeral of 0-999, receiving terminal
The Becon frame for relying on capture is parsed SSID therein.If (there are no other around i.e. and used the method without similar SSID
Screen prjection equipment) just from the beginning of 001 (or 000), be incremented by if occupied, until without occupied numeral, using number
Word name is a kind of simple naming method, can also adopt other naming methods such as letter, symbol in other embodiments,
Ensure not bear the same name.
The screen prjection device of the embodiment of the present invention, by start transmitting terminal SoftAP pattern, based on transmitting terminal with connect
The SoftAP connection that receiving end is set up carries out screen prjection, excellent such that it is able to carry out channel in transmitting terminal before SoftAP connection is set up
Choosing, selects a little channel of current location interference, prevents the channel for using with other WAPs neighbouring from producing as far as possible
Conflict, reduces the channel disturbance in screen subsequent projection process, improves speed and the stability of data transfer, it is to avoid throw
There is the phenomenon of interim card in shadow picture, it is ensured that the fluency of screen prjection, improves the projection experience of user.And, for relatively
Do not support that for old wifi module the equipment of wifi-direct connection also can realize screen by setting up SoftAP connection
Projection, has expanded the range of application of screen prjection.
Further, by the Beacon frame in the outside broadcast packet of transmitting terminal containing customizing messages so that receiving terminal is by detecing
Listen Beacon frame and transmitting terminal is quickly recognized according to the customizing messages in Beacon frame, so as to quickly set up with transmitting terminal
SoftAP connects.Whole connection procedure is simple and quick, substantially reduces projection starting time, reduces the waiting time of user,
And excessively loaded down with trivial details user operation need not be introduced, improves Consumer's Experience.
The screen prjection device that above-described embodiment is provided belongs to same design with screen prjection embodiment of the method, and which is specifically real
The technical characteristic that existing process is referred in embodiment of the method, and embodiment of the method is all corresponding applicable in device embodiment, here not
Repeat again.
It should be noted that herein, term " including ", "comprising" or its any other variant are intended to non-row
The including of his property, so that a series of process including key elements, method, article or device not only include those key elements, and
And also include other key elements for being not expressly set out, or also include intrinsic for this process, method, article or device institute
Key element.In the absence of more restrictions, the key element for being limited by sentence "including a ...", it is not excluded that including to be somebody's turn to do
Also there is other identical element in the process, method of key element, article or device.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform by software to realize, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on such understanding, technical scheme is substantially done to prior art in other words
The part for going out contribution can be embodied in the form of software product, and the computer software product is stored in a storage medium
In (as ROM/RAM, magnetic disc, CD), use so that a station terminal equipment including some instructions (can be mobile phone, computer, clothes
Business device, air-conditioner, or network equipment etc.) execute method described in each embodiment of the present invention.
The preferred embodiments of the present invention are these are only, the scope of the claims of the present invention is not thereby limited, every using this
Equivalent structure or equivalent flow conversion that bright description and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of screen prjection device, it is characterised in that include：
Selecting module, for after transmitting terminal starts SoftAP pattern, the channel for selecting current location interference little；
Link block, is connected for setting up SoftAP using the channel of selection and receiving terminal；
Projection module, carries out screen prjection for being connected based on the SoftAP with the receiving terminal.
2. screen prjection device according to claim 1, it is characterised in that the selecting module includes：
Position acquisition unit, for obtaining the position that the transmitting terminal is currently located；
Channel assignment unit, for selecting, according to the position, the channel locally not used.
3. screen prjection device according to claim 1, it is characterised in that the selecting module includes：
Channel use information acquiring unit, for obtaining the channel use information of the WAP of current location；
Channel assignment unit, for selecting the minimum channel of utilization rate according to the channel use information.
4. screen prjection device according to claim 3, it is characterised in that the channel use information acquiring unit is used
In：
The information of the WAP of the current location that scans before starting SoftAP pattern is obtained, from the WAP
The channel use information of the WAP is obtained in information.
5. screen prjection device according to claim 3, it is characterised in that the channel use information acquiring unit is used
In：
Start STA mode, the WAP of current location is scanned, obtain the channel use information of the WAP.
6. a kind of screen prjection method, it is characterised in that comprise the following steps：
After transmitting terminal starts SoftAP pattern, the little channel of selection current location interference；
The transmitting terminal is set up SoftAP using the channel of selection with receiving terminal and is connected；
The transmitting terminal is connected based on the SoftAP with the receiving terminal carries out screen prjection.
7. screen prjection method according to claim 6, it is characterised in that the little letter of selection current location interference
Road includes：
Obtain the position that the transmitting terminal is currently located；
According to the channel that the position selects locally not use.
8. screen prjection method according to claim 6, it is characterised in that the little letter of selection current location interference
Road includes：
Obtain the channel use information of the WAP of current location；
The minimum channel of utilization rate is selected according to the channel use information.
9. screen prjection method according to claim 8, it is characterised in that the WAP of the acquisition current location
Channel use information include：
Obtain the information of the WAP of the current location that scans before starting SoftAP pattern；
The channel use information of the WAP is obtained from the information of the WAP.
10. screen prjection method according to claim 8, it is characterised in that the wireless access of the acquisition current location
The channel use information of point includes：
Start STA mode, the WAP of current location is scanned, obtain the channel use information of the WAP.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108055671A (en) * | 2017-12-13 | 2018-05-18 | 深圳创维－Rgb电子有限公司 | More equipment communication means, device, equipment and storage medium |
| WO2019029066A1 (en) * | 2017-08-11 | 2019-02-14 | 深圳光峰科技股份有限公司 | Screen interactive connection method, projection device, mobile terminal and system |
| CN110784663A (en) * | 2019-10-25 | 2020-02-11 | 深圳市奥拓电子股份有限公司 | Wireless data transmission and control method and device, electronic equipment and storage medium |
| CN110876115A (en) * | 2018-08-29 | 2020-03-10 | 中国移动通信集团有限公司 | Projection method, terminal, projection equipment and storage medium |
| CN114584816A (en) * | 2020-11-30 | 2022-06-03 | 上海新微技术研发中心有限公司 | Android screen projection definition setting method, computer-readable storage medium and equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130196702A1 (en) * | 2012-01-31 | 2013-08-01 | Brother Kogyo Kabushiki Kaisha | Wireless communication device |
| US20140011456A1 (en) * | 2010-12-25 | 2014-01-09 | Jie Gao | Wireless Display Performance Enhancement |
| CN104244366A (en) * | 2014-09-17 | 2014-12-24 | 广东欧珀移动通信有限公司 | Wireless network connection method and device and mobile device |
-
2016
- 2016-09-29 CN CN201610873013.9A patent/CN106455118A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140011456A1 (en) * | 2010-12-25 | 2014-01-09 | Jie Gao | Wireless Display Performance Enhancement |
| US20130196702A1 (en) * | 2012-01-31 | 2013-08-01 | Brother Kogyo Kabushiki Kaisha | Wireless communication device |
| CN104244366A (en) * | 2014-09-17 | 2014-12-24 | 广东欧珀移动通信有限公司 | Wireless network connection method and device and mobile device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019029066A1 (en) * | 2017-08-11 | 2019-02-14 | 深圳光峰科技股份有限公司 | Screen interactive connection method, projection device, mobile terminal and system |
| CN108055671A (en) * | 2017-12-13 | 2018-05-18 | 深圳创维－Rgb电子有限公司 | More equipment communication means, device, equipment and storage medium |
| CN110876115A (en) * | 2018-08-29 | 2020-03-10 | 中国移动通信集团有限公司 | Projection method, terminal, projection equipment and storage medium |
| CN110876115B (en) * | 2018-08-29 | 2021-12-07 | 中国移动通信集团有限公司 | Projection method, terminal, projection equipment and storage medium |
| CN110784663A (en) * | 2019-10-25 | 2020-02-11 | 深圳市奥拓电子股份有限公司 | Wireless data transmission and control method and device, electronic equipment and storage medium |
| CN114584816A (en) * | 2020-11-30 | 2022-06-03 | 上海新微技术研发中心有限公司 | Android screen projection definition setting method, computer-readable storage medium and equipment |
| CN114584816B (en) * | 2020-11-30 | 2024-06-11 | 上海新微技术研发中心有限公司 | An Zhuotou screen definition setting method, computer-readable storage medium, and apparatus |
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Application publication date: 20170222 |