CN106604403A - Miracast-protocol-based channel selection method and system - Google Patents
Miracast-protocol-based channel selection method and system Download PDFInfo
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- CN106604403A CN106604403A CN201710021914.XA CN201710021914A CN106604403A CN 106604403 A CN106604403 A CN 106604403A CN 201710021914 A CN201710021914 A CN 201710021914A CN 106604403 A CN106604403 A CN 106604403A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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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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- Computer Networks & Wireless Communication (AREA)
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- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a Miracast-protocol-based channel selection method and system. The method comprises: a terminal device searches all connectable AP hotspots and classified the connectable AP hotspots according to a first frequency band list supported by the terminal device; a pre-configured second frequency band list supported by a screen-splitting device is obtained and an available class is selected from the hotspot classes based on the second frequency band list; according to the frequency band of the available class, a corresponding interference strategy is searched and an optimal channel is selected in the available class based on the interference strategy; and WiFi Direct communication is established by the optimal channel and the screen-splitting device and data are sent to the screen-splitting device. When the screen-splitting device is connected by the terminal device, a nearby optimal channel and a large screen terminal are selected by an automatic channel selection algorithm to carry out negotiation and then the WiFi Direct operation channel is stopped in a channel with the lowest interference, so that the packet loss probability of data transmission can be reduced and the screen-split display effect can be improved.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of channel selecting method based on Miracast agreements and it is
System.
Background technology
Miracast is a kind of split screen host-host protocol, and its physical layer uses WiFi Direct technical communications, application layer to use
RTSP protocol transmissions.Based on the split screen function of Miracast protocol realizations, user is allow by the video in mobile phone, game decile
In enjoying the big screen equipment such as TV, projector, bring convenience to the use of user.But, with the continuous development of wireless WiFi,
Wi-Fi hotspot is more and more, and WiFi Display can only randomly choose a channel when connecting, and can so cause user to make
During with the split screen function for being based on Miracast agreements, interim card is caused by neighbouring focus interference, affect the effect of split screen display available
Really.
Thus prior art could be improved and improve.
The content of the invention
The technical problem to be solved in the present invention is, for the deficiencies in the prior art, there is provided a kind of to be assisted based on Miracast
The channel selecting method and system of view, to solve during split screen function of the existing use based on Miracast agreements, by neighbouring
Focus is disturbed and causes interim card, affects the problem of the effect of split screen display available.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention is as follows：
A kind of channel selecting method based on Miracast agreements, it includes：
Terminal unit searches for all attachable AP focuses, and is connected described according to its own first frequency band list supported
AP hotspot's classifications；
The second frequency band list that the split screen equipment that acquisition is pre-configured with is supported, and according to second frequency band list in hotspot's classification
Middle selection available categorical；
Corresponding jamming exposure area is searched according to the frequency range of the available categorical, and according to the jamming exposure area in available categorical
Middle selection preferred channels；
WiFi Direct are set up by the preferred channels and split screen equipment to communicate, and send data to split screen equipment.
The channel selecting method based on Miracast agreements, wherein, the terminal unit search is all attachable
AP focuses, and will also be included before the attachable AP hotspot's classifications according to its own first frequency band list supported：
Terminal unit searches for all attachable WiFi Direct facility informations by WiFi Direct；
Split screen equipment is screened to form split screen equipment in the WiFi Direct facility informations for searching according to Miracast agreements
List, and show the split screen list of devices；
The selection operation that receive user is carried out to the split screen list of devices, and attachable AR is searched for according to the selection operation
Focus.
The channel selecting method based on Miracast agreements, wherein, the terminal unit search is all attachable
AP focuses, and specifically included the attachable AP hotspot's classifications according to its own first frequency band list supported：
The terminal unit searches for the information of all attachable AP focuses, wherein, described information includes channel；
The first frequency band list of its own support is obtained, and a correspondence is set up for each frequency range in first frequency band list
Hotspot's classification；
The attachable AP focuses are divided to by corresponding hotspot's classification according to the channel of each hotspot's classification.
The channel selecting method based on Miracast agreements, wherein, it is described to obtain the split screen equipment being pre-configured with
The second frequency band list held, and selection available categorical is specifically included in the hotspot's classification：
The second frequency band list that the split screen equipment that acquisition is pre-configured with is supported, and the second frequency range row are searched in the hotspot's classification
The corresponding hotspot's classification of each frequency range in table；
Elect the hotspot's classification for finding as available categorical.
The channel selecting method based on Miracast agreements, wherein, the frequency range pair according to the available categorical
The jamming exposure area answered is chosen preferred channels in available categorical and is specifically included：
Judge the number of the available categorical, and when the number is more than 1, transmission speed is chosen most in the available categorical
Fast the first classification and second is classified；
First degree of disturbance and the interior optimum of the second classification of preferred channels in the corresponding classification of jamming exposure area acquisition first is respectively adopted
Second degree of disturbance of channel；
The first degree of disturbance is compared with the second degree of disturbance and the second degree of disturbance with predetermined threshold value respectively；
When the first degree of disturbance is more than predetermined threshold value less than the second degree of disturbance or the second degree of disturbance, the first degree of disturbance correspondence is selected
Preferred channels be preferred channels.
The channel selecting method based on Miracast agreements, wherein, it is described to be set by the preferred channels and split screen
Communicate for WiFi Direct are set up, and send data to split screen equipment and specifically include：
The preferred channels will be sent to into split screen equipment by WiFi Direct negotiation frames to hold consultation；
When consulting successfully, WiFi Direct are set up by the preferred channels and split screen equipment and is communicated, and sent data to
Split screen equipment；
When failure is consulted, user is pointed out to communicate on system default channel.
A kind of channel selecting system based on Miracast agreements, it includes：Terminal unit and split screen equipment；
The terminal unit includes：Sort module, acquisition module, choose module and set up module；
The sort module, for equipment all attachable AP focuses, and the first frequency range row supported according to its own are searched for
Table is by the attachable AP hotspot's classifications；
The acquisition module, for obtaining the second frequency band list that the split screen equipment being pre-configured with is supported, and according to described second
Frequency band list chooses available categorical in hotspot's classification；
The selection module, for searching corresponding jamming exposure area according to the frequency range of the available categorical, and according to described
Jamming exposure area chooses preferred channels in available categorical；
It is described to set up module, communicate for setting up WiFi Direct by the preferred channels and split screen equipment, and data are sent out
Deliver to split screen equipment.
The channel selecting system based on Miracast agreements, wherein, the terminal unit also includes：
Search module, for searching for all attachable WiFi Direct facility informations by WiFi Direct；
Screening module, for split screen equipment to be screened in the WiFi Direct facility informations for searching according to Miracast agreements
To form split screen list of devices, and show the split screen list of devices；
Receiver module, for the selection operation that receive user is carried out to the split screen list of devices, and according to the selection operation
Search for attachable AR focuses.
The channel selecting system based on Miracast agreements, wherein, the sort module is specifically included：
Search unit, for searching for the information of all attachable AP focuses, wherein, described information includes channel；
Acquiring unit, for obtain its own support first frequency band list, and in first frequency band list each frequency
Mono- corresponding hotspot's classification of Duan Jianli；
Division unit, for the attachable AP focuses to be divided to into corresponding focus point according to the channel of each hotspot's classification
Class.
The channel selecting system based on Miracast agreements, wherein, the module of setting up is specifically included：
Negotiation element, holds consultation for the preferred channels being sent to into split screen equipment by WiFi Direct negotiation frames；
First sets up unit, for when consulting successfully, setting up WiFi Direct by the preferred channels and split screen equipment and leading to
Letter, and send data to split screen equipment；
Second sets up unit, for when failure is consulted, pointing out user to communicate on system default channel.
Beneficial effect：Compared with prior art, the invention provides a kind of Channel assignment side based on Miracast agreements
Method and system, methods described includes：Terminal unit searches for all attachable AP focuses, and the first frequency supported according to its own
Duan Liebiao is by the attachable AP hotspot's classifications；The second frequency band list that the split screen equipment that acquisition is pre-configured with is supported, and root
Available categorical is chosen in hotspot's classification according to second frequency band list；Searched according to the frequency range of the available categorical corresponding
Jamming exposure area, and preferred channels are chosen in available categorical according to the jamming exposure area；By the preferred channels and split screen
Equipment sets up WiFi Direct communications, and sends data to split screen equipment.The present invention is being set by terminal unit connection split screen
When standby, nearby preferred channels and large-size screen monitors end are held consultation to automatically select algorithms selection by channel, and then by WiFi Direct
Channel of operation rest in a minimum channel of interference, reduce the packet loss of data transfer, improve the effect of split screen display available.
Description of the drawings
The flow chart that Fig. 1 is preferably implemented for the channel selecting method based on Miracast agreements that the present invention is provided.
The structure principle chart of the channel selecting system based on Miracast agreements that Fig. 2 is provided for the present invention.
Specific embodiment
The present invention provides a kind of channel selecting method and system based on Miracast agreements, for make the purpose of the present invention,
Technical scheme and effect are clearer, clear and definite, and the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.Should
Understand, specific embodiment described herein only to explain the present invention, is not intended to limit the present invention.
In the present invention, using the suffix of such as " module ", " part " or " unit " for being used to represent element only for favourable
In the explanation of the present invention, itself do not have specific meaning.Therefore, " module ", " part " or " unit " can mixedly make
With.
Terminal unit can be implemented in a variety of manners.For example, the terminal described in the present invention can include such as moving
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. are consolidated
Determine terminal.However, it will be understood by those skilled in the art that, in addition to being used in particular for moving the element of purpose, according to this
The construction of bright embodiment can also apply to the terminal of fixed type.
Below in conjunction with the accompanying drawings, by the description to embodiment, the content of the invention is described further.
Refer to Fig. 1, the preferred embodiment of the channel selecting method based on Miracast agreements that Fig. 1 is provided for the present invention
Flow chart.Methods described includes：
S100, terminal unit search for all attachable AP focuses, and will be described according to its own first frequency band list supported
Attachable AP hotspot's classifications.
Specifically, it is described connect AP focuses refer to the terminal unit can search in the range of all can use
AP focuses.Terminal unit obtains the information of the AP focuses, the information of the AP focuses when attachable AP focuses are searched
The channel value and signal intensity residing for the AP focuses can be included, and by the letter of all attachable AP focuses for searching
Breath is aggregated into and can connect AP hotspot lists, by the unique mark of each AP focus, channel value and signal intensity in the list
It is associated, so its corresponding channel value and signal intensity can be can determine according to the unique mark of AP focuses.
The terminal unit by Miracast agreements by display content split screen display available on split screen display available equipment.The end
End equipment is to set up point-to-point transmission function using WiFi Direct with the split screen equipment.The WiFi Direct are to be based on
A kind of point-to-point transmission function of WiFi technology, it is accomplished that the transmission between multiple equipment, in transmitting procedure, there is one
Equipment is group administrator Group Owner, and miscellaneous equipment is group client Group Client.The WiFi Direct
The main search packet of realization and group establishment process of connection.The search procedure can allow terminal to get neighbouring miscellaneous equipment letter
Breath, group establishment process is divided into Wps processes, negotiations process, certification and 4-Way Handshake process again.Wps processes are mainly used to realize peace
Full configuration, user need not be input into any information, and bottom can carry out safety information and automatically configure and consult.Negotiations process is mainly
Determine which equipment is Group Owner, while confirming the channel of data transfer, certification and 4-Way Handshake process are mainly used to reality
Existing safety certification and cipher key configuration, the process is based primarily upon 802.11i specifications.
In the present embodiment, the terminal unit is Group Owner, and the split screen equipment is Group Client.
Terminal unit searches for all attachable AP focuses, and the first frequency band list supported according to its own is by the attachable AP
Search procedure can also be included before hotspot's classification, the search procedure specifically can include：
S001, terminal unit search for all attachable WiFi Direct facility informations by WiFi Direct；
S002, split screen equipment is screened in the WiFi Direct facility informations for searching according to Miracast agreements to be formed point
Screen equipment list, and show the split screen list of devices；
The selection operation that S003, receive user are carried out to the split screen list of devices, and can be even according to selection operation search
The AR focuses for connecing.
Specifically, the terminal unit is obtained after the unlatching of WiFi Display interfaces by WiFi Direct functions of search
Get attachable WiFi Direct equipment around it.And WiFi Direct equipment is being searched, according to Miracast agreements
Filter out all other equipments that can be used as split screen equipment, and by the information shape of all other equipments that can be used as split screen equipment
Composition screen equipment list, then the split screen list of devices is shown on display interface to supply user's selection.It is described showing
After split screen list of devices, the selection operation that real-time reception user is carried out to the split screen list of devices.When receiving the choosing
During extract operation, using the corresponding split screen equipment of the selection operation as the WiFi Direct groups that again terminal unit is constituted
Group Client.Meanwhile, scanned for that the operation of AP focuses can be connected according to the selection operation.
In the present embodiment, first frequency band list is that all frequency ranges that can be adopted by the terminal unit are constituted
, the frequency range that the terminal unit can be adopted can determine according to first frequency band list.Searching all connection
AP focuses after, the AP focuses are classified according to the frequency range in first frequency band list.That is, will be described
The all AP focuses for searching are classified according to the frequency range belonging to its channel.For example, first frequency band list comprising 5G and
2.4G；So just all AP focuses for searching are divided into into two classes, a class is 5G, another kind of for 2.4G.Channel is belonged to into 5G's
Put 5G classes under, by what channel belonged to 2.4G 2.4G is put under.First frequency band list only includes 2.4G, then just will search
All AP focuses are divided into a class, i.e. 2.4G classes.
Exemplary, the terminal unit searches for all attachable AP focuses, and the first frequency supported according to its own
Duan Liebiao specifically includes the attachable AP hotspot's classifications：
S101, the terminal unit search for the information of all attachable AP focuses, wherein, described information includes channel；
S102, first frequency band list for obtaining its own support, and set up one for each frequency range in first frequency band list
Individual corresponding hotspot's classification；
S103, the attachable AP focuses are divided to by corresponding hotspot's classification according to the channel of each hotspot's classification.
It is worth explanation, the AP focuses that will not belong in the hotspot's classification according to the formation of the frequency range of the first frequency band list are lost
Abandon, so can avoid because terminal unit cannot be communicated using the AP focuses, and the terminal unit for causing with point
The problem that screen equipment is set up connection and cannot be communicated.
The second frequency band list that the split screen equipment that S200, acquisition are pre-configured with is supported, and according to second frequency band list
Available categorical is chosen in hotspot's classification.
Specifically, after by AP hotspot's classifications, the second frequency band list that split screen equipment is supported is obtained, and according to described the
Two frequency band lists choose all available classification in all hotspot's classifications.It is, the frequency range of each hotspot's classification is obtained,
The frequency range of the hotspot's classification is searched in second frequency band list, if found, the hotspot's classification is available categorical；
If do not found, the hotspot's classification is available categorical, and with this all available categoricals are obtained.For example, the hotspot's classification
Including 5G classification and 2.4G classification, the second frequency band list only includes 2.4G, then available point chosen according to the second frequency band list
Class is 2.4G classification.
Exemplary, it is described to obtain the second frequency band list that the split screen equipment being pre-configured with is supported, and in the focus point
Apoplexy due to endogenous wind is chosen available categorical and is specifically included：
The second frequency band list that the split screen equipment that S201, acquisition are pre-configured with is supported, and search second in the hotspot's classification
The corresponding hotspot's classification of each frequency range in frequency band list；
S202, elect the hotspot's classification for finding as available categorical.
Specifically, the split screen equipment being pre-configured with receives the split screen that user's selection operation determines for described in and sets
It is standby.Certainly, the split screen equipment can also be the split screen equipment for realizing split screen function that terminal unit is prestored, i.e. institute
State the equipment that split screen equipment is the terminal unit acquiescence connection.That is, when terminal unit does not receive selection operation,
Acquiescence realizes split screen function by the split screen equipment；And when selection operation is received, realized by the split screen equipment chosen
Split screen function.
S300, corresponding jamming exposure area is searched according to the frequency range of the available categorical, and according to the jamming exposure area
Preferred channels are chosen in available categorical.
Specifically, search corresponding jamming exposure area according to the frequency range of the available categorical to refer to be can use according to each
The frequency range of classification searches corresponding jamming exposure area in default jamming exposure area storehouse.For example, the frequency range of the available categorical is 5G,
The corresponding jamming exposure areas of 5G are then searched in the jamming exposure area storehouse；The frequency range of the available categorical is 2.4G, then described dry
Disturb and search in policy library the corresponding jamming exposure areas of 2.4G.
Further, due to the available categorical can be used as it is multiple, and in order to simplify channel strategy selection process, can with need
Judge the number of the available categorical, and it is different using different modes of operation according to number, to improve the speed of channel selection
Degree, reduces the waiting time of user.
Exemplary, the corresponding jamming exposure area of the frequency range according to the available categorical chooses optimum in available categorical
Channel is specifically included：
S301, the number for judging the available categorical, and when the number is more than 1, transmission is chosen in the available categorical
Fastest the first classification and second is classified；
S302, the first degree of disturbance that the interior preferred channels of the corresponding classification of jamming exposure area acquisition first are respectively adopted and the second classification are interior
Second degree of disturbance of preferred channels；
S303, the first degree of disturbance is compared with the second degree of disturbance and the second degree of disturbance and predetermined threshold value respectively；
S304, when the first degree of disturbance is more than predetermined threshold value less than the second degree of disturbance or the second degree of disturbance, select first to disturb
Corresponding preferred channels are spent for preferred channels.
Specifically, the number of the available categorical can be 1, or it is multiple.It it is 1 in the available categorical number
When, directly its corresponding jamming exposure area is searched in jamming exposure area storehouse according to the frequency range of the available categorical, just no longer go to live in the household of one's in-laws on getting married here
State, and stress that the available categorical is multiple situations.When the available categorical is multiple（2 or more than）When,
Can be arranged near slow-motion traveling with the available categorical is had according to the transmission speed of its corresponding frequency range, and choose transmission speed
The corresponding classification of two most fast channels of degree is used as candidate classification.Here two candidate classifications are designated as into respectively the first classification and
Two classification.
After the first classification and the second classification is selected, the first corresponding first jamming exposure area of classification and the are obtained respectively
Corresponding second jamming exposure area of two classification.And the degree of disturbance shape of each AP focus in the first classification is calculated using the first jamming exposure area
Into the first degree of disturbance set, the degree of disturbance for carrying out each AP focus in the second classification using the second jamming exposure area emerges the second interference
Degree set, the degree of disturbance in first degree of disturbance set and the second degree of disturbance set is to rise continuous row according to degree of disturbance size
Row.Choose again and respectively the first degree of disturbance set and the second degree of disturbance set comes the first degree of disturbance for being, first is designated as respectively
Degree of disturbance and the second degree of disturbance.In actual applications, the classification of correspondence first can first determine whether its corresponding frequency range whether 2.4G
Frequency range, if 2.4G frequency ranges, then according to the degree of disturbance of an AP focus in the policy calculation of the 2.4G frequency ranges classification, and assignment
To a 2.4G variables, if the degree of disturbance of next AP focuses is less than the variate-value, then new channel is given by the variate-value
Degree of disturbance；If 5G frequency ranges, then according to the degree of disturbance of an AP focus in 5G frequency range policy calculations, and a 5G variables are assigned to
Storage, if the degree of disturbance of next AP focuses is less than or equal to the value, then by 5G variables gives new interference angle value again；According to
The first degree of disturbance of secondary determination and the second degree of disturbance.
The jamming exposure area pre-sets, and correspondence different channels can adopt identical jamming exposure area, for example, for
Each AP focus is strong according to the number of the AP focuses included in the corresponding channel of the AP focuses and the signal of each AP focus
Degree is weighted the degree of disturbance for determining the AP focuses.The different channel of correspondence can also adopt different jamming exposure areas.
In the present embodiment, it is illustrated by taking 2.4G and 5G as an example respectively.
For a 2.4G channel, due to there are several interference channels around a channel, four channels can be typically differed
Could not interfere with completely.So as to the quantity of present channel AP, the signal intensity RSSI of current AP, the AP quantity of interference channel with
And the signal intensity of the AP of interference channel, a preferred channels are selected according to following weighted value.Wherein, N is empirical value, for
Different chip manufacturers take different values, such as, mTK chips take -50, and high pass takes -60, and corresponding value can be stored in text
In part, read out during calculating, if not finding the plateau value of adaptation, using default value -50.The formula can be：
Wherein,、、WithThe connected channel of AP channels is represented respectively, it is describedRepresent
The weight of each channel,=1,2,3；N is constant,For signal intensity,Represent the number of focus in same channel.
For 5G frequency ranges are substantially not present interference channel, so being only weighted according to the number and intensity of present channel
Obtain.
In order to further illustrate, the selection of hotspot's classification is given below two examples and is illustrated.
If terminal unit supports two-band 2.4G and 5G, split screen equipment only supports 2.4G frequency ranges, then from terminal unit
The 2.4G that calculates of the corresponding jamming exposure areas of 2.4G preferred channels communication, as preferred channels.
If terminal unit supports two-band, split screen equipment also supports double frequency, then corresponding from the 2.4G of terminal unit
The preferred channels communication of the 2.4G that jamming exposure area is calculated, the 5G's calculated from the corresponding jamming exposure areas of 5G of terminal unit
Preferred channels communicate；The preferred channels degree of disturbance of 5G frequency ranges is compared with the preferred channels degree of disturbance of 2.4G frequency ranges, while
And a threshold value is set, if the degree of disturbance of the preferred channels of 5G is less than or equal to the degree of disturbance of 2.4G preferred channels, or it is more than
The degree of disturbance of 2.4G preferred channels is less than the threshold value, then the preferred channels in 5G communicate, and otherwise the preferred channels in 2.4G are led to
Letter.
If terminal unit only supports 2.4G frequency ranges, split screen equipment supports two-band, then from 2.4G pair of terminal unit
The preferred channels communication of the 2.4G that the jamming exposure area answered is calculated, as preferred channels.
S400, WiFi Direct are set up by the preferred channels and split screen equipment communicate, and send data to split screen
Equipment.
Specifically, after preferred channels are got, by Go Negotiation procedure communications, preferred channels are sent to
Split screen equipment is held consultation, if negotiations process success, WiFi Display will in the channel communication, if consult failure,
Prompting user can only communicate in default channel, re-establish connection procedure.
It is exemplary, it is described WiFi Direct are set up by the preferred channels and split screen equipment to communicate, and data are sent out
Deliver to split screen equipment to specifically include：
S401, frame will be consulted by WiFi Direct and the preferred channels will be sent to into split screen equipment hold consultation；
S402, when consulting successfully, WiFi Direct are set up by the preferred channels and split screen equipment and are communicated, and by data
Send to split screen equipment；
S403, when consult failure when, point out user communicate on system default channel.
Present invention also offers a kind of channel selecting system based on Miracast agreements, as shown in Fig. 2 it includes：Eventually
End equipment 100 and split screen equipment 200；
The terminal unit 100 includes：Sort module 101, acquisition module 102, choose and module 103 and set up module 104；
The sort module 101, for equipment all attachable AP focuses, and the first frequency range supported according to its own are searched for
List is by the attachable AP hotspot's classifications；
The acquisition module 102, for obtaining the second frequency band list that the split screen equipment that is pre-configured with is supported, and according to described the
Two frequency band lists choose available categorical in hotspot's classification；
The selection module 103, for searching corresponding jamming exposure area according to the frequency range of the available categorical, and according to institute
State jamming exposure area and preferred channels are chosen in available categorical；
It is described to set up module 104, communicate for setting up WiFi Direct by the preferred channels and split screen equipment, and by number
According to transmission to split screen equipment.
The channel selecting system based on Miracast agreements, wherein, the terminal unit also includes：
Search module, for searching for all attachable WiFi Direct facility informations by WiFi Direct；
Screening module, for split screen equipment to be screened in the WiFi Direct facility informations for searching according to Miracast agreements
To form split screen list of devices, and show the split screen list of devices；
Receiver module, for the selection operation that receive user is carried out to the split screen list of devices, and according to the selection operation
Search for attachable AR focuses.
The channel selecting system based on Miracast agreements, wherein, the sort module is specifically included：
Search unit, for searching for the information of all attachable AP focuses, wherein, described information includes channel；
Acquiring unit, for obtain its own support first frequency band list, and in first frequency band list each frequency
Mono- corresponding hotspot's classification of Duan Jianli；
Division unit, for the attachable AP focuses to be divided to into corresponding focus point according to the channel of each hotspot's classification
Class.
The channel selecting system based on Miracast agreements, wherein, the module of setting up is specifically included：
Negotiation element, holds consultation for the preferred channels being sent to into split screen equipment by WiFi Direct negotiation frames；
First sets up unit, for when consulting successfully, setting up WiFi Direct by the preferred channels and split screen equipment and leading to
Letter, and send data to split screen equipment；
Second sets up unit, for when failure is consulted, pointing out user to communicate on system default channel.
The modules of the above-mentioned channel selecting system based on Miracast agreements have been described in detail in the above-mentioned methods,
Just no longer state one by one here.
In embodiment provided by the present invention, it should be understood that disclosed system and method, can pass through other
Mode is realized.For example, device embodiment described above is only schematic, and for example, the division of the module is only
A kind of division of logic function, can there is an other dividing mode when actually realizing, such as multiple units or component can with reference to or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling or direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, device or unit
Connect, can be electrical, mechanical or other forms.
The unit as separating component explanation can be or may not be it is physically separate, it is aobvious as unit
The part for showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can according to the actual needs be selected to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.Above-mentioned integrated list
Unit both can be realized in the form of hardware, it would however also be possible to employ hardware adds the form of SFU software functional unit to realize.
The above-mentioned integrated unit realized in the form of SFU software functional unit, can be stored in an embodied on computer readable and deposit
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server, or network equipment etc.) or processor (processor) perform the present invention each
The part steps of embodiment methods described.And aforesaid storage medium includes：USB flash disk, portable hard drive, read only memory (Read-
Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disc or CD etc. it is various
Can be with the medium of store program codes.
Finally it should be noted that：Above example only to illustrate technical scheme, rather than a limitation；Although
The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (10)
1. a kind of channel selecting method based on Miracast agreements, it is characterised in that it includes：
Terminal unit searches for all attachable AP focuses, and is connected described according to its own first frequency band list supported
AP hotspot's classifications；
The second frequency band list that the split screen equipment that acquisition is pre-configured with is supported, and according to second frequency band list in hotspot's classification
Middle selection available categorical；
Corresponding jamming exposure area is searched according to the frequency range of the available categorical, and according to the jamming exposure area in available categorical
Middle selection preferred channels；
WiFi Direct are set up by the preferred channels and split screen equipment to communicate, and send data to split screen equipment.
2. the channel selecting method of Miracast agreements is based on according to claim 1, it is characterised in that the terminal unit
Search for all attachable AP focuses, and the first frequency band list supported according to its own is by the attachable AP hotspot's classifications
Also include before：
Terminal unit searches for all attachable WiFi Direct facility informations by WiFi Direct；
Split screen equipment is screened to form split screen equipment in the WiFi Direct facility informations for searching according to Miracast agreements
List, and show the split screen list of devices；
The selection operation that receive user is carried out to the split screen list of devices, and attachable AR is searched for according to the selection operation
Focus.
3. the channel selecting method of Miracast agreements is based on according to claim 1, it is characterised in that the terminal unit
Search for all attachable AP focuses, and the first frequency band list supported according to its own is by the attachable AP hotspot's classifications
Specifically include：
The terminal unit searches for the information of all attachable AP focuses, wherein, described information includes channel；
The first frequency band list of its own support is obtained, and a correspondence is set up for each frequency range in first frequency band list
Hotspot's classification；
The attachable AP focuses are divided to by corresponding hotspot's classification according to the channel of each hotspot's classification.
4. the channel selecting method of Miracast agreements is based on according to claim 1, it is characterised in that the acquisition is advance
The second frequency band list that the split screen equipment of configuration is supported, and selection available categorical is specifically included in the hotspot's classification：
The second frequency band list that the split screen equipment that acquisition is pre-configured with is supported, and the second frequency range row are searched in the hotspot's classification
The corresponding hotspot's classification of each frequency range in table；
Elect the hotspot's classification for finding as available categorical.
5. the channel selecting method of Miracast agreements is based on according to claim 1, it is characterised in that described in the basis
The corresponding jamming exposure area of frequency range of available categorical is chosen preferred channels in available categorical and is specifically included：
Judge the number of the available categorical, and when the number is more than 1, transmission speed is chosen most in the available categorical
Fast the first classification and second is classified；
First degree of disturbance and the interior optimum of the second classification of preferred channels in the corresponding classification of jamming exposure area acquisition first is respectively adopted
Second degree of disturbance of channel；
The first degree of disturbance is compared with the second degree of disturbance and the second degree of disturbance with predetermined threshold value respectively；
When the first degree of disturbance is more than predetermined threshold value less than the second degree of disturbance or the second degree of disturbance, the first degree of disturbance correspondence is selected
Preferred channels be preferred channels.
6. the channel selecting method of Miracast agreements is based on according to claim 1, it is characterised in that described by described
Preferred channels are set up WiFi Direct and are communicated with split screen equipment, and send data to split screen equipment and specifically include：
The preferred channels will be sent to into split screen equipment by WiFi Direct negotiation frames to hold consultation；
When consulting successfully, WiFi Direct are set up by the preferred channels and split screen equipment and is communicated, and sent data to
Split screen equipment；
When failure is consulted, user is pointed out to communicate on system default channel.
7. a kind of channel selecting system based on Miracast agreements, it is characterised in that it includes：Terminal unit and split screen set
It is standby；
The terminal unit includes：Sort module, acquisition module, choose module and set up module；
The sort module, for equipment all attachable AP focuses, and the first frequency range row supported according to its own are searched for
Table is by the attachable AP hotspot's classifications；
The acquisition module, for obtaining the second frequency band list that the split screen equipment being pre-configured with is supported, and according to described second
Frequency band list chooses available categorical in hotspot's classification；
The selection module, for searching corresponding jamming exposure area according to the frequency range of the available categorical, and according to described
Jamming exposure area chooses preferred channels in available categorical；
It is described to set up module, communicate for setting up WiFi Direct by the preferred channels and split screen equipment, and data are sent out
Deliver to split screen equipment.
8. the channel selecting system of Miracast agreements is based on according to claim 7, it is characterised in that the terminal unit
Also include：
Search module, for searching for all attachable WiFi Direct facility informations by WiFi Direct；
Screening module, for split screen equipment to be screened in the WiFi Direct facility informations for searching according to Miracast agreements
To form split screen list of devices, and show the split screen list of devices；
Receiver module, for the selection operation that receive user is carried out to the split screen list of devices, and according to the selection operation
Search for attachable AR focuses.
9. the channel selecting system of Miracast agreements is based on according to claim 7, it is characterised in that the sort module
Specifically include：
Search unit, for searching for the information of all attachable AP focuses, wherein, described information includes channel；
Acquiring unit, for obtain its own support first frequency band list, and in first frequency band list each frequency
Mono- corresponding hotspot's classification of Duan Jianli；
Division unit, for the attachable AP focuses to be divided to into corresponding focus point according to the channel of each hotspot's classification
Class.
10. the channel selecting system of Miracast agreements is based on according to claim 7, it is characterised in that described to set up mould
Block is specifically included：
Negotiation element, holds consultation for the preferred channels being sent to into split screen equipment by WiFi Direct negotiation frames；
First sets up unit, for when consulting successfully, setting up WiFi Direct by the preferred channels and split screen equipment and leading to
Letter, and send data to split screen equipment；
Second sets up unit, for when failure is consulted, pointing out user to communicate on system default channel.
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