CN107318173A - The data transmission method and system of mobile terminal and onboard system - Google Patents
The data transmission method and system of mobile terminal and onboard system Download PDFInfo
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- CN107318173A CN107318173A CN201610264793.7A CN201610264793A CN107318173A CN 107318173 A CN107318173 A CN 107318173A CN 201610264793 A CN201610264793 A CN 201610264793A CN 107318173 A CN107318173 A CN 107318173A
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- physical channel
- data
- mobile terminal
- transmission
- onboard system
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
Abstract
The present invention provides the data transmission method and its system of a kind of mobile terminal and onboard system, consult passage for transmission in one between the selection mobile terminal and onboard system physical channel connected, the data interaction that passage moves terminal and onboard system can be consulted by the transmission, transmission channel detection instruction, the physical channel that each has been connected between detection mobile terminal and onboard system, obtain the communication performance parameter of each physical channel connected, so as to be judged according to the communication performance parameter to the real-time Communication for Power performance of each physical channel, preferential physical channel is determined in screening, by the data to be transmitted between the mobile terminal and onboard system, automatically switch to the preferential physical channel transmission.The passage more flexibility for interconnecting onboard system and mobile terminal, the onboard system of adaptation and the brand and model of mobile terminal are more extensive, while connection has more robustness, remain to maintain to connect by switching channel in the environment of being disturbed can use.
Description
Technical field
The present invention relates to the number of the technical field of onboard system, more particularly to a kind of mobile terminal and onboard system
According to the data transmission system of transmission method, and a kind of mobile terminal and onboard system.
Background technology
It is an important development side of current intelligent car networking that mobile terminal, which with onboard system interconnect,
To quickly and conveniently the Internet service based on mobile terminal can be moved under automobile application scene.
The interconnection of mobile terminal and onboard system, core technology is by the video on mobile terminal, audio, control
The control signal that onboard system is produced is transferred to shifting on onboard system by signal processed and other data transfers
Dynamic terminal completes interactive function.Mobile terminal allows user using on automobile with onboard system interconnection technique
Hardware device serviced using car networking, include middle control display screen, car microphone, the vehicle audio of automobile
The equipment such as system, automobile steering disk controller keyboard, knob and button so that car networking service can be vehicle-mounted
More preferable experience effect is obtained under environment and driving scene.
At present, the interconnection technique of the mobile terminal of main flow and onboard system is typically connected using single physical channel
Connect, various types of data are all transmitted by the single physical channel, such as it is logical separately through bluetooth
Road is connected, connected separately through USB passages or separately through WI-FI passages connection etc., due to mobile terminal
With the complexity of onboard system interconnection technique usage scenario, mobile terminal and onboard system brand and model and scheme
Fragmentation, be connected to using the single one physical passage of above-mentioned fixation under many scenes and there is limitation, such as
Some onboard systems do not support bluetooth connection, lead to not use WI-FI under interconnection services, some environment to believe
It is number unstable to be easily caused connection and be disturbed.
The content of the invention
Based on this, the data transfer mode for existing mobile terminal and onboard system is inconvenient, is not sufficiently stable
The problem of, it is an object of the invention to propose the data transmission method of a kind of mobile terminal and onboard system, lead to
Cross to a variety of physical channel automatic adaptations, can automatically select most suitable physical channel move terminal with
The data transfer of onboard system, improves the stability of the convenience used and data transfer.
A kind of data transmission method of mobile terminal and onboard system, comprises the following steps：
Passage is consulted in a selected physical channel connected between mobile terminal and onboard system for transmission；
Consult channel transfer Air conduct measurement by the transmission to instruct, between detection mobile terminal and onboard system
Each physical channel connected, obtains the communication performance parameter of each physical channel connected；
The physical channel that each has been connected is screened according to the communication performance parameter, it is determined that preferential physics
Passage；
Channel transfer passage matching instruction is consulted by the transmission, by the mobile terminal and onboard system it
Between data to be transmitted, switch to the preferential physical channel transmission.
It is an object of the invention to also propose the data transmission system of a kind of mobile terminal and onboard system, pass through
To a variety of physical channel automatic adaptations, most suitable physical channel can be automatically selected and move terminal and car
The data transfer of loading system, improves the stability of the convenience used and data transfer.
A kind of data transmission system of mobile terminal and onboard system, including：
Consult channel selecting module, one for selecting between the mobile terminal and onboard system thing that has connected
Manage passage and consult passage for transmission；
Channel detecting module, is instructed for consulting channel transfer Air conduct measurement by the transmission, detection movement
The physical channel that each has been connected between terminal and onboard system, obtains the logical of each physical channel connected
Believe performance parameter；
Privileged way selecting module, for the physical channel connected according to the communication performance parameter to each
Screened, it is determined that preferential physical channel；
Transmission control module, for consulting channel transfer passage matching instruction by the transmission, is moved described
Dynamic data to be transmitted between terminal and onboard system, switches to the preferential physical channel transmission.
The present invention mobile terminal and onboard system data transmission method and its system, selection mobile terminal with
Passage is consulted in one between the onboard system physical channel connected for transmission, can be assisted by the transmission
Business's passage moves the data interaction of terminal and onboard system, and transmission channel detection instruction, detection is mobile eventually
The physical channel that each has been connected between end and onboard system, obtains the communication of each physical channel connected
Performance parameter, sentences so as to be made according to the communication performance parameter to the real-time Communication for Power performance of each physical channel
Disconnected, preferential physical channel is determined in screening, by the data to be transmitted between the mobile terminal and onboard system,
Automatically switch to the preferential physical channel transmission.Make onboard system and passage that mobile terminal is interconnected more clever
Activity, the onboard system and the brand and model of mobile terminal that can be adapted to is more extensive；Simultaneously so that connection
With more robustness, remain to maintain to connect by switching channel in the environment of being disturbed can use.
Physical channel in the mobile terminal of the present invention and the data transmission method and its system of onboard system can be same
When support the wired or wireless connected modes such as bluetooth, USB and WI-FI, it is logical by the various physics of dynamic instrumentation
The availability and performance parameter in road, can according to the communication performance parameter of each physical channel by video, audio,
The physical channel distribution that the contents such as control signal, other data are optimized；Moreover, making when a certain
When physical channel is broken down or is interfered, system is automatically according to currently available passage and communication performance
Parameter situation is entered Mobile state and redistributed, and ensures the availability of interconnection services.
Brief description of the drawings
Fig. 1 is the flow chart of the data transmission method of an embodiment mobile terminal and onboard system；
Fig. 2 is the application environment schematic diagram of the data transmission method of an embodiment mobile terminal and onboard system；
Fig. 3 is the method flow schematic diagram of selected transmission negotiation passage in an embodiment；
Fig. 4 is the schematic flow sheet of the data transmission method of another embodiment mobile terminal and onboard system；
Fig. 5 is the schematic flow sheet of the data transmission method of another embodiment mobile terminal and onboard system；
Fig. 6 is the structural representation of the data transmission system of an embodiment mobile terminal and onboard system.
Specific embodiment
For the objects, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the present invention is described in further detail.It should be appreciated that embodiment described herein
Only to explain the present invention, protection scope of the present invention is not limited.
In certain embodiments, the present invention is provided mobile terminal and the data transmission method of onboard system, such as
Shown in Fig. 1, comprise the following steps：
S102, a selected physical channel connected between mobile terminal and onboard system is consulted for transmission
Passage；
S104, consults channel transfer Air conduct measurement by the transmission and instructs, detection mobile terminal and vehicle-mounted system
The physical channel that each has been connected between system, obtains the communication performance parameter of each physical channel connected；
S106, is screened according to the communication performance parameter to the physical channel that each has been connected, and is determined excellent
First physical channel；
S108, by it is described transmission consult channel transfer passage matching instruction, by the mobile terminal with it is vehicle-mounted
Data to be transmitted between system, switches to the preferential physical channel transmission.
The mobile terminal of the present invention and the data transmission method of onboard system, selection mobile terminal and onboard system
Between the physical channel that has connected consult passage for transmission, passage can be consulted by the transmission and entered
The data interaction of row mobile terminal and onboard system, transmission channel detection instruction, detection mobile terminal with it is vehicle-mounted
The physical channel that each has been connected between system, obtains the communication performance parameter of each physical channel connected,
So as to be judged according to the communication performance parameter to the real-time Communication for Power performance of each physical channel, screening is true
Preferential physical channel is made, the data to be transmitted between the mobile terminal and onboard system automatically switches
To the preferential physical channel transmission.The passage more flexibility for making onboard system be interconnected with mobile terminal, energy
The onboard system and the brand and model of mobile terminal being enough adapted to are more extensive；Simultaneously so that connection has more Shandong
Rod, remains to maintain to connect by switching channel can use in the environment of being disturbed.
In certain embodiments, the data transmission method of the mobile terminal and onboard system can be applied to such as Fig. 2
In shown system, mobile terminal 1 02 is interconnected by a variety of physical channels with onboard system 104, is moved
Dynamic terminal 102 and onboard system 104 interconnected used in physical channel include but is not limited to bluetooth, WiFi
(adopting wireless fidelity technology), RFID (Radio Frequency Identification, radio frequency identification) etc. are wireless thing
Manage passage, can also including USB, HDMI etc. wireline physical passage.
Mobile terminal 1 02 can be smart mobile phone, tablet personal computer or laptop computer etc..The mobile terminal 1 02
It may include holder, communicator and the processor interconnected, holder is used to store control system data
And routine data, processor is used to transfer data and the operation in holder, and can pass through such as camera, key
The input equipments such as disk, mouse, touch-screen obtain user instruction, pass through the communicator and the vehicle-mounted system
System 104 is communicated, and the communicator may include the company of the communication such as bluetooth, WiFi, RFID
Connect device, can also including USB, HDMI etc. wired communication mode connector.Mobile terminal 1 02 may be used also
Including display device, display device is used for display control interface after program operation, and will be from onboard system 104
The sound of reception, video data and information data are shown in the control interface of the mobile terminal.
Onboard system 104 can be the vehicle intelligent system such as car running computer or vehicle carried video system, or vehicle device.
The onboard system 104 is used to run wagon control program, obtains vehicle monitoring data, with the movement eventually
End 102 is interacted, the operation such as physical channel of switching and the communication of mobile terminal.
Onboard system 104 may also comprise processor, memory and communicator etc., memory be used for it is interim or
Permanent storage calculation procedure or data, processor can be transported by arithmetic sum logic basic in computer system
Calculate to perform the interaction data with mobile terminal 1 02, communicator is used to interconnect with the mobile terminal 1 02
Communication, the communicator of the onboard system 104 equally may include the radio communications such as bluetooth, WiFi, RFID
The connector of mode, can also including USB, HDMI etc. wired communication mode connector.
The mobile terminal of the present invention and the data transmission method of onboard system both may operate in the mobile terminal
On 102, it can also operate on the onboard system 104, or by the mobile terminal 1 02 and the car
Loading system 104 coordinates operation.
For example, operating in the mobile terminal 1 02, then carried out initiating each by the mobile terminal 1 02
The Air conduct measurement instruction of the physical channel connected, obtains the communication performance parameter of each physical channel,
And preferential physical channel is matched according to the communication performance parameter.By mobile terminal 1 02 and the onboard system
104 coordinate operation, then by the communication-cooperation between mobile terminal 1 02 and onboard system 104, complete each
The detection of the physical channel connected simultaneously obtains corresponding communication performance parameter, then according to the communication performance
The preferential physical channel of parameter matching.
In certain embodiments, as shown in figure 3, before step S102, further comprising the steps：
S1011, the connection request that sends of mobile terminal is received by the first physical channel, set up mobile terminal with
The connection of first physical channel of onboard system；
S1012, the mobile terminal is obtained in each physical channel by the connection of first physical channel
Communication identifier；
S1013, is attached search to each physical channel respectively, if searching the mobile terminal in phase
The communication identifier of physical channel is answered, then sets up the connection in the physical channel of mobile terminal and onboard system.
For example, onboard system automatically opens up bluetooth connection, the company that mobile terminal is sent is received by Bluetooth channels
Request is connect, the connection of the Bluetooth channels of mobile terminal and onboard system is set up by the connection request.Then
By the connection of the Bluetooth channels, from the acquisition for mobile terminal its WiFi passages, USB passages it is logical
Beacon is known；Then connectable device is searched for automatically in WiFi passages, USB passages, if detecting the shifting
WiFi passages, the communication identifier of USB passages of dynamic terminal, then set up WiFi passages, the company of USB passages
Connect.It so can in an automated way search for and connect physical channel therebetween, without addition connection manually
Equipment.It is possible to further remind the physical channel being not switched on, such as USB is not connected with, then is sent
USB alerting signals are connected, remind user to connect manually.Due to the mobile terminal and the onboard system
Physical channel may not be completely the same, accordingly, it is possible to have part physical Air conduct measurement less than connectable device.It is logical
Cross and automatically open up each physical channel and search for connectable device automatically, it is manually operated without user, improve
The convenience used.
In certain embodiments, the step S102 comprises the following steps：
The negotiation priority of each physical channel is set, each physics is detected successively according to the negotiation priority
The connection status of passage, if the physical channel of current detection has been connected, the physics of selection current detection leads to
Consult passage as transmission in road.
Consult passage by choosing one first and having set up the physical channel effectively connected and be used as transmission, it is mobile eventually
End can consult the detection of passage exchange channels by the transmission with the onboard system and instruct, so as to standard
The communication performance parameter of each physical channel is really detected, the accuracy of physical channel switching is improved.
Negotiation priority during the selection of the transmission negotiation passage can be according to mobile terminal and the type of onboard system
Number set, can also be according to the communication quality under the conventional sense of physical channel, the parameter setting such as be delayed.
As shown in figure 4, as a specific embodiment, USB passages consult passage as the first acquiescence, blue
Tooth passage consults passage as the second acquiescence, and WI-FI consults passage as the 3rd acquiescence.Mobile terminal with it is vehicle-mounted
System detect successively first, second, third acquiescence consult passage whether foundation is effectively connected, if detection
Effective connection is not set up to USB passages, then continues to detect that the second acquiescence consults passage Bluetooth channels, if inspection
Measure Bluetooth channels and set up effective connection, then consult passage as transmission, pass through the Bluetooth channels
Sendaisle detection instruction, obtains the communication performance parameter of each physical channel.
, can be fast by detecting whether each physical channel effectively connects successively according to default negotiation priority
Transmission is chosen fastly and consults passage, while without user instruction, improving connection speed and ease of use.
The communication performance parameter obtained includes but is not limited to one or more of following parameter：
Message transmission rate, packet loss, number of retransmissions, the bit error rate and propagation delay time.
Pass through the communication performance parameter of each physical channel, it can be determined that the communication matter of each physical channel
Amount, including message transmission rate, connective stability, wireless signal strength etc., and other can reflect company
Connect the parameter of road performance indications.
During the communication performance parameter is obtained, it can be referred to by the negotiation channel transfer Air conduct measurement
Order, controls the mobile terminal to be transmitted respectively by the physical channel being connected described in each with onboard system and surveys
Data are tried, by the transmission result of the test data, the logical of the physical channel that has been connected described in each are obtained
Believe performance parameter.
In certain embodiments, the physical channel that each has been connected is sieved according to the communication performance parameter
Choosing, it is determined that the step of preferential physical channel includes any one following sub-step：
Sub-step a, compares the communication performance parameter of the physical channel connected described in each, chooses communication performance
The optimal physical channel of parameter is preferential physical channel；
Sub-step b, by the data format of data to be transmitted and each described default prioritized data class in physical channel
Type compares, and the selection prioritized data type physical channel consistent with the data type of the data to be transmitted is excellent
First physical channel；
Sub-step c, according to the size of data of data to be transmitted, and predicted transmission time, is calculated described to be passed
The anticipated transmission speed of transmission of data, selection message transmission rate and the immediate physics of anticipated transmission speed
Passage is preferential physical channel；
Sub-step d, according to the data level of data to be transmitted, obtains packet loss corresponding with the data level
With or number of retransmissions maximum, selection packet loss and or number of retransmissions be less than the maximum physical channel
For preferential physical channel.
In sub-step a, compared by the communication performance parameter of each physical channel, choose communication performance ginseng
The optimal physical channel of number is preferential physical channel, can quickly determine preferential physical channel, and can obtain
Obtain best transmission quality.In sub-step b, c and d, by by the property parameters of data to be transmitted and each
The communication performance parameter matching of physical channel, intelligently can match most suitable thing by data to be transmitted
It is transmitted on reason passage, i.e., can intelligently distributes video, audio, control and other data and flow to and most close
It is transmitted on suitable physical channel, reaches best laser propagation effect or service performance.
Wherein, include but is not limited in following property parameters one of the property parameters of the data to be transmitted or
It is multiple：
The data type of data to be transmitted, the size of data of data to be transmitted, predicted transmission time, physics lead to
The maximum packet loss in road, maximum bit error rate, maximum retransmission, and data level.
In certain embodiments, as shown in figure 5, after preferential physical channel has been matched, further performing
Following steps：
Obtain the communication performance parameter of current preferential physical channel；
If the communication performance parameter of current preferential physical channel is less than predetermined threshold value, pass through the transmission
Consult passage, reacquire the communication performance parameter of each physical channel connected；
The physical channel that each has been connected is screened according to the communication performance parameter, redefined preferential
Physical channel；
Channel transfer passage matching instruction is consulted by the transmission, by the mobile terminal and onboard system it
Between data to be transmitted, switch to redefine preferential physical channel transmission.
When obstacle occurs for the preferential physical channel that is using, mobile terminal of the invention and onboard system
Data are also dynamically switched on other physical channels and transmitted by data transmission method.The original of smart allocation
To be then data-rate requirements match with channel capacity, real-time property requirement and passage real-time match,
Stability of channel is secure.
In certain embodiments, by the data to be transmitted between the mobile terminal and onboard system, switch to
The step of preferential physical channel is transmitted includes：
Channel transfer passage matching instruction is consulted by the transmission, the mobile terminal and onboard system is controlled
Data Transport Protocol according to the preferential physical channel is encoded to data to be transmitted；
Packet after coding is transmitted by the preferential physical channel.
By rapidly switching coded system, it is ensured that the data transfer of mobile terminal and onboard system not by
The communication quality limitation of specific physical channel, with more flexibility.
In certain embodiments, when the communication identifier that onboard system detects mobile terminal changes, display is moved
Dynamic terminal connection handover information, or mobile terminal connection handover information is sent to mobile terminal shown, with
Confirm for user.And each physical channel connection of new mobile terminal and onboard system, choosing can be re-established
Preferentially first preferential physical channel carries out data transmission.
In the application scenarios that mobile terminal and onboard system are interconnected, generally at any one time, only one of which is moved
Dynamic terminal keeps being connected with onboard system.If a mobile terminal is set up with onboard system and is connected, separately
One mobile terminal still attempt to onboard system set up be connected, then will to it is existing connection produce disturb, or to
Family produces puzzlement.Such as the first mobile terminal currently passes through USB passages and is connected with onboard system, now uses
Family wants to connect another mobile terminal, then the USB passages that can actively disconnect current mobile terminal and onboard system connect
Connect, should not now be identified as communication disruption caused by the communication quality of respective channel declines.Pass through the above method
New mobile terminal can be identified, will not be judged by accident.
The mobile terminal of the present invention and the data transmission method of onboard system can improve mobile terminal and vehicle-mounted system
Applicability, connection robustness and the ease of use of system interconnection scheme.
Because the present invention supports all possible physical channel, and can dynamically, intelligently distribute and treat
Transmitting data stream is asked to the Hardware match on suitable physical channel, solving mobile terminal and onboard system
Topic, improves the applicability of mobile terminal and onboard system interconnection scheme.When the physical channel hair used
It during raw obstacle, can be intelligently switched into other available channels, it is ensured that the availability of service, improve movement
The robustness that terminal is interconnected with onboard system；Avoid requiring that user follows specific operation order and could used mutually
Connection service, improves the ease of use of mobile terminal and onboard system interconnection services.
In certain embodiments, the present invention is provided mobile terminal and the data transmission system of onboard system, such as
Shown in Fig. 6, including：
Consult channel selecting module 12, one for selecting between mobile terminal and onboard system has connected
Consult passage for transmission in physical channel；
Channel detecting module 14, is instructed, detection is moved for consulting channel transfer Air conduct measurement by the transmission
The dynamic physical channel that each has been connected between terminal and onboard system, obtains each physical channel connected
Communication performance parameter；
Privileged way selecting module 16, for being led to according to the communication performance parameter to the physics that each has been connected
Road is screened, it is determined that preferential physical channel；
Transmission control module 18, will be described for consulting channel transfer passage matching instruction by the transmission
Data to be transmitted between mobile terminal and onboard system, switches to the preferential physical channel transmission.
The mobile terminal of the present invention and the data transmission system of onboard system, selection mobile terminal and onboard system
Between the physical channel that has connected consult passage for transmission, passage can be consulted by the transmission and entered
The data interaction of row mobile terminal and onboard system, transmission channel detection instruction, detection mobile terminal with it is vehicle-mounted
The physical channel that each has been connected between system, obtains the communication performance parameter of each physical channel connected,
So as to be judged according to the communication performance parameter to the real-time Communication for Power performance of each physical channel, screening is true
Preferential physical channel is made, the data to be transmitted between the mobile terminal and onboard system automatically switches
To the preferential physical channel transmission.The passage more flexibility for making onboard system be interconnected with mobile terminal, energy
The onboard system and the brand and model of mobile terminal being enough adapted to are more extensive；Simultaneously so that connection has more Shandong
Rod, remains to maintain to connect by switching channel can use in the environment of being disturbed.
In certain embodiments, the channel selecting module 12 of consulting sets the negotiation of each physical channel preferential
Level, the connection status of each physical channel is detected according to the negotiation priority successively, if current detection
Physical channel has been connected, then selects the physical channel of current detection as transmission negotiation passage.
Consult passage by choosing one first and having set up the physical channel effectively connected and be used as transmission, it is mobile eventually
End can consult the detection of passage exchange channels by the transmission with the onboard system and instruct, so as to standard
The communication performance parameter of each physical channel is really detected, the accuracy of physical channel switching is improved.
By detecting whether each physical channel effectively connects successively according to preset order, can rapidly it choose
Consult passage to transmission, while without user instruction, improving connection speed and ease of use.
The communication performance parameter includes following one or more：
Packet loss, the bit error rate, number of retransmissions, message transmission rate, propagation delay time.
In certain embodiments, the privileged way selecting module 16 includes one in following matched sub-block
Or it is multiple：
First matched sub-block, the communication performance parameter of the physical channel connected for comparing described in each,
It is preferential physical channel to choose the optimal physical channel of communication performance parameter；
Second matched sub-block, for the data format of data to be transmitted to be preset with physical channel each described
Prioritized data type compare, selection prioritized data type it is consistent with the data type of the data to be transmitted
Physical channel is preferential physical channel；
3rd matched sub-block, for the size of data according to data to be transmitted, and predicted transmission time,
Calculate the anticipated transmission speed of the data to be transmitted, selection message transmission rate and the anticipated transmission speed
Immediate physical channel is preferential physical channel；
4th matched sub-block, for the data level according to data to be transmitted, is obtained and the data level
Corresponding maximum packet loss and or maximum retransmission, selection packet loss and or number of retransmissions be less than the maximum
Packet loss and or maximum retransmission physical channel be preferential physical channel.
First matched sub-block is compared by the communication performance parameter of each physical channel, chooses communicativeness
The optimal physical channel of energy parameter is preferential physical channel, can quickly determine preferential physical channel, and energy
Enough obtain best transmission quality.Second, third and the 4th matched sub-block are by by data to be transmitted
Property parameters are matched with the communication performance parameter of each physical channel, can be intelligently by data to be transmitted
Be fitted on most suitable physical channel and be transmitted, i.e., can intelligently distribute video, audio, control and its
His data are flowed to be transmitted on most suitable physical channel, reaches best laser propagation effect or service performance.
In certain embodiments, the channel detecting module is further used for determining in the passage matching module
Behind preferential physical channel, the communication performance parameter of current preferential physical channel is obtained, if current is preferential
The communication performance parameter of physical channel is less than predetermined threshold value, then consults passage by the transmission, reacquire
The communication performance parameter of each physical channel connected；
The privileged way selecting module is further used for each has been connected according to the communication performance parameter
Physical channel is screened, and redefines preferential physical channel；
The transmission control module is further used for consulting channel transfer passage matching instruction by the transmission,
By the data to be transmitted between the mobile terminal and onboard system, switch to the preferential physics redefined and lead to
Transmit in road.
When obstacle occurs for the physical channel used, mobile terminal of the invention and the data of onboard system
Transmission system is also dynamically switched to other available physical passages up.The principle of smart allocation is preferably number
Match according to rate requirement and channel capacity, real-time property requirement and passage real-time match, passage is steady
It is qualitative secure.
Each technical characteristic of embodiment described above can be combined arbitrarily, not right to make description succinct
The all possible combination of each technical characteristic in above-described embodiment is all described, as long as however, these skills
Contradiction is not present in the combination of art feature, is all considered to be the scope of this specification record.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed,
But can not therefore it be construed as limiting the scope of the patent.It should be pointed out that for this area
For those of ordinary skill, without departing from the inventive concept of the premise, some deformations can also be made and changed
Enter, these belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended power
Profit requires to be defined.
Claims (10)
1. the data transmission method of a kind of mobile terminal and onboard system, it is characterised in that comprise the following steps：
Passage is consulted in a selected physical channel connected between mobile terminal and onboard system for transmission；
Consult channel transfer Air conduct measurement by the transmission to instruct, between detection mobile terminal and onboard system
Each physical channel connected, obtains the communication performance parameter of each physical channel connected；
The physical channel that each has been connected is screened according to the communication performance parameter, it is determined that preferential physics
Passage；
Channel transfer passage matching instruction is consulted by the transmission, by the mobile terminal and onboard system it
Between data to be transmitted, switch to the preferential physical channel transmission.
2. the data transmission method of mobile terminal according to claim 1 and onboard system, its feature exists
In further comprising the steps of before passage is consulted in selected transmission：
The connection request that mobile terminal is sent is received by the first physical channel, mobile terminal and vehicle-mounted system is set up
The connection of first physical channel of system；
Communication mark of the mobile terminal in each physical channel is obtained by the connection of first physical channel
Know；
Search is attached to each physical channel respectively, if searching the mobile terminal in respective physical
The communication identifier of passage, then set up the connection in the physical channel of mobile terminal and onboard system.
3. the data transmission method of mobile terminal according to claim 1 and onboard system, its feature exists
In the step of passage is consulted in selected transmission includes：
The negotiation priority of each physical channel is set, each physics is detected successively according to the negotiation priority
The connection status of passage, if the physical channel of current detection has been connected, the physics of selection current detection leads to
Consult passage as transmission in road.
4. the data transmission method of mobile terminal according to claim 1 and onboard system, its feature exists
In further comprising the steps of it is determined that after preferential physical channel：
Obtain the communication performance parameter of current preferential physical channel；
If the communication performance parameter of current preferential physical channel is less than predetermined threshold value, pass through the transmission
Consult passage, reacquire the communication performance parameter of each physical channel connected；
The physical channel that each has been connected is screened according to the communication performance parameter, redefined preferential
Physical channel；
Channel transfer passage matching instruction is consulted by the transmission, by the mobile terminal and onboard system it
Between data to be transmitted, switch to redefine preferential physical channel transmission.
5. the data transfer of mobile terminal as claimed in any of claims 1 to 4 and onboard system
Method, it is characterised in that screened according to the communication performance parameter to the physical channel that each has been connected,
It is determined that the step of preferential physical channel includes any one following sub-step：
Sub-step a, compares the communication performance parameter of the physical channel connected described in each, chooses communication performance
The optimal physical channel of parameter is preferential physical channel；
Sub-step b, by the data format of data to be transmitted and each described default prioritized data class in physical channel
Type compares, and the selection prioritized data type physical channel consistent with the data type of the data to be transmitted is excellent
First physical channel；
Sub-step c, according to the size of data of data to be transmitted, and predicted transmission time, is calculated described to be passed
The anticipated transmission speed of transmission of data, selection message transmission rate and the immediate physics of anticipated transmission speed
Passage is preferential physical channel；
Sub-step d, according to the data level of data to be transmitted, obtains maximum corresponding with the data level and loses
Bag rate and or maximum retransmission, selection packet loss and or number of retransmissions be less than the maximum packet loss and or most
The physical channel of big number of retransmissions is preferential physical channel.
6. the data transfer of mobile terminal as claimed in any of claims 1 to 4 and onboard system
Method, it is characterised in that by the data to be transmitted between the mobile terminal and onboard system, switches to institute
Stating the step of preferential physical channel is transmitted includes：
Channel transfer passage matching instruction is consulted by the transmission, the mobile terminal and onboard system is controlled
Data Transport Protocol according to the preferential physical channel is encoded to data to be transmitted；
Packet after coding is transmitted by the preferential physical channel.
7. the data transmission system of a kind of mobile terminal and onboard system, it is characterised in that including：
Consult channel selecting module, one for selecting between the mobile terminal and onboard system thing that has connected
Manage passage and consult passage for transmission；
Channel detecting module, is instructed for consulting channel transfer Air conduct measurement by the transmission, detection movement
The physical channel that each has been connected between terminal and onboard system, obtains the logical of each physical channel connected
Believe performance parameter；
Privileged way selecting module, for the physical channel connected according to the communication performance parameter to each
Screened, it is determined that preferential physical channel；
Transmission control module, for consulting channel transfer passage matching instruction by the transmission, is moved described
Dynamic data to be transmitted between terminal and onboard system, switches to the preferential physical channel transmission.
8. the data transmission system of mobile terminal according to claim 7 and onboard system, its feature exists
In, it is described to consult the negotiation priority that channel selecting module sets each physical channel, consult excellent according to described
First level detects the connection status of each physical channel successively, if the physical channel of current detection has been connected,
The physical channel of current detection is selected as transmission negotiation passage.
9. the data transmission system of mobile terminal according to claim 8 and onboard system, its feature exists
In：
The channel detecting module is further used for after the passage matching module determines preferential physical channel,
The communication performance parameter of current preferential physical channel is obtained, if the communicativeness of current preferential physical channel
Energy parameter is less than predetermined threshold value, then consults passage by the transmission, reacquire each physics connected
The communication performance parameter of passage；
The privileged way selecting module is further used for each has been connected according to the communication performance parameter
Physical channel is screened, and redefines preferential physical channel；
The transmission control module is further used for consulting channel transfer passage matching instruction by the transmission,
By the data to be transmitted between the mobile terminal and onboard system, switch to the preferential physics redefined and lead to
Transmit in road.
10. the data of mobile terminal and onboard system according to any one in claim 7 to 9 are passed
Defeated system, it is characterised in that the passage matching module includes one or more of following matched sub-block：
First matched sub-block, the communication performance parameter of the physical channel connected for comparing described in each,
It is preferential physical channel to choose the optimal physical channel of communication performance parameter；
Second matched sub-block, for the data format of data to be transmitted to be preset with physical channel each described
Prioritized data type compare, selection prioritized data type it is consistent with the data type of the data to be transmitted
Physical channel is preferential physical channel；
3rd matched sub-block, for the size of data according to data to be transmitted, and predicted transmission time,
Calculate the anticipated transmission speed of the data to be transmitted, selection message transmission rate and the anticipated transmission speed
Immediate physical channel is preferential physical channel；
4th matched sub-block, for the data level according to data to be transmitted, is obtained and the data level pair
The maximum packet loss answered and or maximum retransmission, selection packet loss and or number of retransmissions lost less than the maximum
Bag rate and or maximum retransmission physical channel be preferential physical channel.
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