CN103001717B - Method, device and system for downloading programs based on vehicle-mounted terminal - Google Patents
Method, device and system for downloading programs based on vehicle-mounted terminal Download PDFInfo
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- CN103001717B CN103001717B CN201210537154.5A CN201210537154A CN103001717B CN 103001717 B CN103001717 B CN 103001717B CN 201210537154 A CN201210537154 A CN 201210537154A CN 103001717 B CN103001717 B CN 103001717B
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Abstract
The invention provides a method, a device and a system for downloading programs based on a vehicle-mounted terminal. The method comprises that a first vehicle-mounted terminal receives a broadcast message which is transmitted by at least one vehicle-mounted terminal within the communication range of other vehicle-mounted terminals, the broadcast message comprises a vehicle-mounted terminal mark, a name of a program which can be downloaded and a sequence number of a downloaded program content data piece which corresponds to the program name, all broadcast messages which are received currently are inquired through the first vehicle-mounted terminal in accordance with the name of the first program to be downloaded, a vehicle-mounted terminal which transmits the broadcast message containing the first program name serves as a second vehicle-mounted terminal, and the program content data piece of the downloaded program of which is marked by the sequence number sequentially can be obtained from the second vehicle-mounted terminal. The communication bandwidth among cars is used completely to conduct multimedia information interaction, the communication number of cars and roadside stations is reduced and the roadside station bandwidth resource is saved.
Description
Technical field
The embodiment of the present invention relates to technical field of intelligent traffic, particularly relates to a kind of program downloading method based on car-mounted terminal, equipment and system.
Background technology
Along with the development of intelligent transportation and mobile communication technology, increasing car-mounted terminal can accessing Internet network, and the program that can download according to user's program request of car-mounted terminal obtains the stream media information of needs from corresponding server by the roadside base station of ownership.But due to limited bandwidth resources, particularly Streaming Media is all high bandwidth business, therefore, along with increasing automobile communicates mutually with roadside base station, the bandwidth resources of roadside base station can be taken in a large number, cause roadside base station load to reach bottleneck.
Summary of the invention
For the above-mentioned defect of prior art, the embodiment of the present invention provides a kind of program downloading method based on car-mounted terminal, equipment and system.
One aspect of the present invention provides a kind of program downloading method based on car-mounted terminal, comprising:
First car-mounted terminal with the communication range of other car-mounted terminal in receive the broadcast that at least one car-mounted terminal sends, described broadcast comprise car-mounted terminal mark, can the programm name of program downloading, and the sequence number of the Downloadable program content data sheet corresponding with described programm name;
All broadcasts that described first car-mounted terminal is currently received according to the first program name query of program to be downloaded, judge whether to exist the broadcast comprising described first programm name, if so, then determine the second car-mounted terminal carrying out downloading;
Described first car-mounted terminal sends to described second car-mounted terminal and comprises the downloading request message of described first programm name, and receive that described second car-mounted terminal returns corresponding with described first programm name, with the program content data sheet of sequence number sequence identification.
The present invention provides a kind of car-mounted terminal on the other hand, comprising:
Receiver module, for with the communication range of other car-mounted terminal in receive the broadcast that at least one car-mounted terminal sends, described broadcast comprise car-mounted terminal mark, can the programm name of program downloading, and the sequence number of the Downloadable program content data sheet corresponding with described programm name;
Processing module, for all broadcasts be currently received according to the first program name query of program to be downloaded, judges whether to exist the broadcast comprising described first programm name, if so, then determines the second car-mounted terminal carrying out downloading;
First download module, comprise the downloading request message of described first programm name for sending to described second car-mounted terminal, and receive that described second car-mounted terminal returns corresponding with described first programm name, with the program content data sheet of sequence number sequence identification.
Another aspect of the invention provides a kind of program download system based on car-mounted terminal, comprising: at least two car-mounted terminals, and one of them car-mounted terminal is above-mentioned car-mounted terminal.
The program downloading method based on car-mounted terminal that the embodiment of the present invention provides, equipment and system, first car-mounted terminal with the communication range of other car-mounted terminal in receive the broadcast that at least one car-mounted terminal sends, broadcast comprises car-mounted terminal mark, can the programm name of program downloading, and the sequence number of the Downloadable program content data sheet corresponding with programm name, by all broadcasts that the first car-mounted terminal is currently received according to the first program name query of program to be downloaded, and determine that the car-mounted terminal that a transmission comprises the broadcast of the first programm name is the second car-mounted terminal, and the program content data sheet of program to be downloaded from the second car-mounted terminal acquisition sequence number sequence identification.Thus the communication bandwidth taken full advantage of between automobile and automobile carries out interaction of multimedia information, reduce the number of communications of automobile and roadside base station, save roadside base station broadband resource.
Accompanying drawing explanation
Fig. 1 is the flow chart of the program downloading method embodiment that the present invention is based on car-mounted terminal;
Fig. 2 is the flow chart of another embodiment of program downloading method that the present invention is based on car-mounted terminal;
Fig. 3 is the structural representation of a car-mounted terminal of the present invention embodiment;
Fig. 4 is the structural representation of another embodiment of car-mounted terminal of the present invention;
Fig. 5 is the structural representation of the program download system embodiment that the present invention is based on car-mounted terminal.
Embodiment
Fig. 1 is the flow chart of the program downloading method embodiment that the present invention is based on car-mounted terminal, and as shown in Figure 1, the method comprises:
Step 100, first car-mounted terminal with the communication range of all the other car-mounted terminals in receive the broadcast that at least one car-mounted terminal sends, described broadcast comprise car-mounted terminal mark, can the programm name of program downloading, and the sequence number of the Downloadable program content data sheet corresponding with described programm name;
Each car-mounted terminal stores some flow-medium performances, specifically comprise: programm name and the program content data sheet corresponding with programm name, wherein, program content data sheet is that relevant technical staff in the field is under moving vehicle environment, the process of cutting into slices in prior art is adopted to carry out slicing treatment with mechanism to programme content, thus whole programme content file division is become some little sheets, and with sequence number, these program content data sheets are identified, such as S1, S2, S3, Sn, an I frame at least will be had in each program content data sheet, to ensure that each program content data sheet that car-mounted terminal receives can normal play when not relying on other program content data sheets.Therefore, car-mounted terminal on each automobile has the flow-medium performance information table of this car a, this program information table comprises the programm name that this car stores, and the program content data sheet by sequence number mark corresponding with programm name, it should be noted that, may be complete with the programme content corresponding to programm name also may be part, such as: the programme content that program P is corresponding always has 50 program content data sheets, identify with S1-S50, if car-mounted terminal only stores the partial content of this program and corresponding relation is: P and S1-S20 is corresponding, represent that this car-mounted terminal only stores front 20 program content data sheets of P program.
The programme content that the car-mounted terminal of each automobile stores can as with the program loading source self can carrying out the car-mounted terminal of communication interaction, namely provide download service.Therefore, the car-mounted terminal of each automobile sends broadcast according to the time cycle of presetting to all the other car-mounted terminals, this broadcast comprise car-mounted terminal mark, can the programm name of program downloading, and the sequence number of the Downloadable program content data sheet corresponding with programm name.Thus the first car-mounted terminal with the communication range of all the other car-mounted terminals in receive broadcast that at least one car-mounted terminal sends and resolve, obtain the car-mounted terminal mark in broadcast, can the programm name of program downloading, and the sequence number of the Downloadable program content data sheet corresponding with programm name.Particularly, the communication range of the first car-mounted terminal and all the other car-mounted terminals will be determined according to communication protocol concrete between car-mounted terminal, communication protocol between car-mounted terminal specifically comprises: wireless access (the Wireless Access in Vehicular Environment under automotive environment, WAVE) agreement and 3G (Third Generation) Moblie (Third generation cellular communication, 3G) the communication protocol such as agreement, corresponding communication range is specially: the communication range based on WAVE agreement is 500 meters, communication range based on 3G agreement is about 11000 meters.
Step 101, all broadcasts that described first car-mounted terminal is currently received according to the first program name query of program to be downloaded, judge whether to exist the broadcast comprising described first programm name, if so, then determine the second car-mounted terminal carrying out downloading;
When first car-mounted terminal receive user send comprise the download instruction of the first programm name after, according to the programm name in all broadcasts that the first program name query of program to be downloaded is currently received, judge whether to exist the broadcast comprising the first programm name, the broadcast existing and comprise the first programm name is known if judge, then illustrating can by the communication protocol between car-mounted terminal, the bandwidth resources between car-mounted terminal are utilized to carry out program download from remaining car-mounted terminal, then the first car-mounted terminal selectes the car-mounted terminal that a transmission comprises the first programm name broadcast is the second car-mounted terminal, namely programme content to be downloaded is obtained from the second car-mounted terminal.
It should be noted that, when the first car-mounted terminal judges to know that at least two car-mounted terminals send the broadcast comprising the first programm name, except Stochastic choice one is as except the second car-mounted terminal, the first car-mounted terminal can also be determined according to the selection strategy preset.The selection strategy preset can adjust according to actual conditions, and such as according to the time of inquiry, the first car-mounted terminal is determined to send by first the car-mounted terminal comprising the first programm name broadcast and is defined as the second car-mounted terminal; Or, when automobile being installed global positioning system (Global Positioning System, GPS) when guider, each automobile can obtain the current longitude and latitude data of automobile and positional information by GPS, thus each car-mounted terminal also comprises the positional information of car-mounted terminal in the broadcast sent, in such cases, the positional information that first car-mounted terminal can report with each car-mounted terminal according to self, and preset determine the second car-mounted terminal with the Distance geometry direction of self; Or, when on automobile during installation rate transducer, each automobile can obtain the current speed of a motor vehicle of automobile by Negotiation speed transducer, thus each car-mounted terminal also comprises the velocity information of car-mounted terminal in the broadcast sent, in such cases, first car-mounted terminal can determine the second car-mounted terminal according to each car-mounted terminal and the relative motion distance of self, and the first car-mounted terminal determines that the concrete condition of the second car-mounted terminal should need to adjust according to practical application, is not limited thereto.
Step 102, described first car-mounted terminal sends to described second car-mounted terminal and comprises the downloading request message of described first programm name, and receive that described second car-mounted terminal returns corresponding with described first programm name, with the program content data sheet of sequence number sequence identification.
After the first car-mounted terminal determines the second car-mounted terminal carrying out downloading, from the broadcast that the second car-mounted terminal sends, obtain the car-mounted terminal corresponding with the second car-mounted terminal identify, first car-mounted terminal sends according to car-mounted terminal mark the downloading request message comprising the first programm name to the second car-mounted terminal, second car-mounted terminal carries out parsing acquisition first programm name to the downloading request message received, then inquire about local program information table and obtain the program content data sheet corresponding with the first programm name, and from top line content-data sheet, the first car-mounted terminal is returned to sequence number sequence identification, thus the first car-mounted terminal receive that the second car-mounted terminal returns corresponding with the first programm name to be downloaded, with the program content data sheet of sequence number sequence identification.
The program downloading method based on car-mounted terminal that the present embodiment provides, first car-mounted terminal with the communication range of all the other car-mounted terminals in receive the broadcast that at least one car-mounted terminal sends, broadcast comprises car-mounted terminal mark, can the programm name of program downloading, and the sequence number of the Downloadable program content data sheet corresponding with programm name, by all broadcasts that the first car-mounted terminal is currently received according to the first program name query of program to be downloaded, and determine that the car-mounted terminal that a transmission comprises the broadcast of the first programm name is the second car-mounted terminal, and the program content data sheet of program to be downloaded from the second car-mounted terminal acquisition sequence number sequence identification.Thus the communication bandwidth taken full advantage of between automobile and automobile carries out interaction of multimedia information, reduce the number of communications of automobile and roadside base station, save roadside base station broadband resource.
Fig. 2 is the flow chart of another embodiment of program downloading method that the present invention is based on car-mounted terminal, and as shown in Figure 2, the method comprises:
Step 200, first car-mounted terminal with the communication range of all the other car-mounted terminals in receive the broadcast that at least one car-mounted terminal sends, described broadcast comprise car-mounted terminal mark, can the programm name of program downloading, and the sequence number of the Downloadable program content data sheet corresponding with described programm name;
Step 201, all broadcasts that described first car-mounted terminal is currently received according to the first program name query of program to be downloaded, judge whether to exist the broadcast comprising described first programm name, if, then perform step 202, otherwise, perform step 205;
Step 202, described first car-mounted terminal determines the second car-mounted terminal carrying out downloading, and send to described second car-mounted terminal and comprise the downloading request message of described first programm name, and receive that described second car-mounted terminal returns corresponding with described first programm name, with the program content data sheet of sequence number sequence identification;
In the present embodiment, step 200 is to the step 100 in the specific implementation process embodiment shown in Figure 1 of step 202 to step 102, repeats no more herein.
Step 203, whether described first car-mounted terminal interrupts receiving in corresponding with described first programm name, with the program content data sheet of sequence number sequence identification the process that described second car-mounted terminal returns to monitor to occur downloading, if, then according to all broadcasts that interrupt sequence inquiry is currently received, judge whether to exist the broadcast comprising described first programm name and described interrupt sequence number, if so, the 3rd car-mounted terminal continuing to download then is determined;
Monitor in corresponding with the first programm name, with the program content data sheet of sequence number sequence identification the process that first car-mounted terminal returns at reception second car-mounted terminal whether to occur downloading between the second car-mounted terminal and interrupt, the situation of interrupting is downloaded if occur, then according to all broadcasts that interrupt sequence inquiry is currently received, judge whether to exist the broadcast comprising the first programm name and interrupt sequence number, if so, the 3rd car-mounted terminal continuing to download then is determined.Wherein, interrupt sequence number is between the first car-mounted terminal and the second car-mounted terminal after communication disruption, and the sequence number of the next program content data sheet that the first programm name of the pending download of the first car-mounted terminal is corresponding is such as S20.Then the programm name in all broadcasts of being currently received according to the first programm name and interrupt sequence inquiry of the first car-mounted terminal and the sequence number of corresponding program content data sheet, judge whether to exist the broadcast comprising the first programm name and interrupt sequence number, the broadcast existing and comprise the first programm name and interrupt sequence number is known if judge, then illustrating to utilize the bandwidth resources between car-mounted terminal to carry out program download from remaining car-mounted terminal by the communication protocol between car-mounted terminal, then the first car-mounted terminal selectes the car-mounted terminal that a transmission comprises the first programm name and interrupt sequence broadcast is the 3rd car-mounted terminal, namely continue to obtain the programme content do not downloaded from the 3rd car-mounted terminal.It should be noted that, when the first car-mounted terminal judges to know that at least two car-mounted terminals send the broadcast comprising the first programm name and interrupt sequence number, except Stochastic choice one is as except the 3rd car-mounted terminal, first car-mounted terminal can also be determined according to the selection strategy preset, concrete selection course can determine the process of the second car-mounted terminal by the first car-mounted terminal in the step 101 of embodiment shown in Figure 1, repeats no more herein.
It should be noted that, first car-mounted terminal reception second car-mounted terminal return corresponding with the first programm name, in process with the program content data sheet of sequence number sequence identification, and occur between the second car-mounted terminal that downloading the situation of interrupting specifically comprises two kinds of application scenarioss, passive interruption scene is specially: when the second car-mounted terminal rolls the communication range between the first car-mounted terminal away from, such as, if the second car-mounted terminal communication protocol rolled away between the first car-mounted terminal is WAVE agreement, when second car-mounted terminal distance the first car-mounted terminal is more than 500 meters, then can not carry out communication interaction with the first car-mounted terminal, thus the first car-mounted terminal occurs downloading interruption, redefine the 3rd car-mounted terminal to continue to download the part do not completed, this situation first car-mounted terminal is passive knows that appearance is interrupted having certain delay, efficiency is lower, in order to improve download efficiency, first car-mounted terminal can adopt active break mode, namely active break scene is specially: when automobile being installed GPS navigation device, each automobile can obtain the current longitude and latitude data of automobile and positional information by GPS, thus each car-mounted terminal also comprises the positional information of car-mounted terminal in the broadcast sent, in such cases, the positional information that first car-mounted terminal can report with each car-mounted terminal according to self, judge whether the second car-mounted terminal arrives the critical zone of default communication range, if, then send to the second car-mounted terminal and download interrupt instruction, illustrate, if the communication protocol between the second car-mounted terminal and the first car-mounted terminal is WAVE agreement, the critical zone of communication range of presetting be the second car-mounted terminal and the first car-mounted terminal move toward one another time, the scope being more than or equal to 400 meters with the distance of the first car-mounted terminal is critical zone, therefore, when the first car-mounted terminal monitor the second car-mounted terminal and the first car-mounted terminal move toward one another and and between the first car-mounted terminal more than 400 meters time, send to the second car-mounted terminal and download interrupt instruction, and determine the 3rd car-mounted terminal continuing download in time, improve download efficiency.
Step 204, described first car-mounted terminal sends the downloading request message comprising described first programm name and described interrupt sequence number to described 3rd car-mounted terminal, and receives program content data sheet that is that described 3rd car-mounted terminal returns, corresponding with described first programm name, sequence identification from described interrupt sequence number.
After the first car-mounted terminal determines the 3rd car-mounted terminal proceeding to download, from the broadcast that the 3rd car-mounted terminal sends, obtain the car-mounted terminal corresponding with the 3rd car-mounted terminal identify, first car-mounted terminal sends the downloading request message comprising the first programm name and interrupt sequence number to the 3rd car-mounted terminal according to car-mounted terminal mark, 3rd car-mounted terminal carries out parsing acquisition first programm name and interrupt sequence number to the downloading request message received, then inquire about local program information table to obtain and the first programm name and interrupt sequence number corresponding program content data sheet, and sequence identification returns to the first car-mounted terminal from interruption sequence number, thus first car-mounted terminal receive the 3rd car-mounted terminal return corresponding with the first programm name to be downloaded, the program content data sheet of sequence identification is started with interrupt sequence number.
Step 205, described first car-mounted terminal sends to the base station of ownership the downloading request message comprising described first programm name, for the rendition list that described base station stores according to described first program name query this locality, judge whether described the rendition list comprises described first programm name, if, then return corresponding with described first programm name to described first car-mounted terminal, with the program content data sheet of sequence number sequence identification, otherwise, the downloading request message comprising described first programm name is sent to content distributing network, and receive that described content distributing network returns corresponding with described first programm name, send to described first car-mounted terminal with the program content data sheet of sequence number sequence identification.
The broadcast of the current all receptions of the first car-mounted terminal inquiry, the broadcast not comprising the first programm name is known if judge, then illustrating can not by the communication protocol between car-mounted terminal, the bandwidth resources between car-mounted terminal are utilized to carry out program download from remaining car-mounted terminal, and need to carry out communicating with roadside base station to obtain programme content to be downloaded, wherein, the communication protocol of car-mounted terminal and roadside base station comprises 3G agreement, 3G Long Term Evolution (Long Term Evolution, LTE) agreement etc.Be specially: the first car-mounted terminal sends to the roadside base station of ownership the downloading request message comprising the first programm name, roadside base station carries out parsing acquisition first programm name to the downloading request message received, then according to the rendition list that first program name query this locality stores, judge whether the rendition list comprises the first programm name, know that local the rendition list comprises the first programm name if judge, then return corresponding with the first programm name to the first car-mounted terminal, with the program content data sheet of sequence number sequence identification, know in local the rendition list if judge and do not comprise the first programm name, the downloading request message comprising the first programm name is then sent to content distributing network, and receive that content distributing network returns corresponding with the first programm name, with the program content data sheet of sequence number sequence identification, and send to the first car-mounted terminal.Be understandable that, whole flow-medium performance contents is kept on the content distributing network that coupled together by network by some servers, each roadside base station is furnished with a streaming media server, due to process resource-constrained, each roadside base station is by being only kept at popular program content on local streaming media server with content distributing network is mutual, if the program that user's program request is downloaded, not on home base stations streaming media server, can obtain from content distributing network.
Compared with prior art, the program downloading method based on car-mounted terminal that the present embodiment provides, judge to know that the car-mounted terminal that can communicate with self exists programme content to be downloaded by car-mounted terminal, then carry out obtaining programme content to be downloaded alternately based on the communication protocol between car-mounted terminal and car-mounted terminal, when judgement knows there is not programme content to be downloaded with the car-mounted terminal that self can communicate, then from ownership roadside base station or obtain programme content to be downloaded by roadside base station from content distributing network, if automobiles all in prior art all communicates with roadside base station, the bandwidth resources of roadside base station will be taken like this, particularly Streaming Media is all high bandwidth business, therefore, roadside base station is likely caused to be paralysed, can not work, and adopt the communication bandwidth taken full advantage of between automobile and automobile of method described in the present embodiment to carry out interaction of multimedia information, reduce the number of communications of automobile and roadside base station, save roadside base station broadband resource.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a user terminal read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Fig. 3 is the structural representation of a car-mounted terminal of the present invention embodiment, as shown in Figure 3, this car-mounted terminal comprises: receiver module 11, processing module 12 and the first download module 13, wherein, receiver module 11 for the communication range of all the other car-mounted terminals in receive the broadcast that at least one car-mounted terminal sends, broadcast comprise car-mounted terminal mark, can the programm name of program downloading, and the sequence number of the Downloadable program content data sheet corresponding with programm name; Processing module 12, for all broadcasts be currently received according to the first program name query of program to be downloaded, judges whether to exist the broadcast comprising the first programm name, if so, then determines the second car-mounted terminal carrying out downloading; First download module 13 comprises the downloading request message of the first programm name for sending to the second car-mounted terminal, and receive that the second car-mounted terminal returns corresponding with the first programm name, with the program content data sheet of sequence number sequence identification.
The function of each module and handling process in the car-mounted terminal that the present embodiment provides, can see the embodiment of the method shown in above-mentioned Fig. 1, and it realizes principle and technique effect is similar, repeats no more herein.
Fig. 4 is the structural representation of another embodiment of car-mounted terminal of the present invention, as shown in Figure 4, based on embodiment illustrated in fig. 3, whether this car-mounted terminal also comprises: monitoring modular 14, interrupt for monitoring to occur downloading in the process receiving the program content data sheet that is corresponding with described first programm name, that identify with sequence number that described second car-mounted terminal returns; Processing module 12, also have no progeny in downloading in appearance, according to all broadcasts that interrupt sequence inquiry is currently received, judge whether to exist the broadcast comprising the first programm name and described interrupt sequence number, if so, the 3rd car-mounted terminal continuing to download then is determined; First download module 13, also for sending the downloading request message comprising the first programm name and interrupt sequence number to the 3rd car-mounted terminal, and receive program content data sheet that is that the 3rd car-mounted terminal returns, corresponding with the first programm name, sequence identification from interrupting sequence number.
Wherein, monitoring modular 14 specifically for: the positional information according to self and the second car-mounted terminal judges whether the second car-mounted terminal arrives the critical zone of default communication range, if so, then sends to the second car-mounted terminal and downloads interrupt instruction.
Further, car-mounted terminal also comprises: the second download module 15, if judge to know the broadcast not existing and comprise the first programm name for processing module 12, base station then to ownership sends the downloading request message comprising the first programm name, for the rendition list that base station stores according to first program name query this locality, judge whether the rendition list comprises the first programm name, if, then return corresponding with the first programm name to the first car-mounted terminal, with the program content data sheet of sequence number sequence identification, otherwise, the downloading request message comprising the first programm name is sent to content distributing network, and receive that content distributing network returns corresponding with the first programm name, send to described first car-mounted terminal with the program content data sheet of sequence number sequence identification.
The function of each module and handling process in the car-mounted terminal that the present embodiment provides, can see the embodiment of the method shown in above-mentioned Fig. 2, and it realizes principle and technique effect is similar, repeats no more herein.
Fig. 5 is the structural representation of the program download system embodiment that the present invention is based on car-mounted terminal, as shown in Figure 5, this system comprises: comprise at least two car-mounted terminals, one of them car-mounted terminal is the first car-mounted terminal 1, what carry out communication interaction with the first car-mounted terminal 1 is the second car-mounted terminal 2, wherein, the car-mounted terminal that the first car-mounted terminal 1 can adopt the embodiment of the present invention to provide, the second car-mounted terminal 2 can be the second car-mounted terminal involved in the embodiment of the present invention.
The function based on each module in the program download system of car-mounted terminal that the present embodiment provides and handling process, can see above-mentioned shown embodiment of the method, and it realizes principle and technique effect is similar, repeats no more herein.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. based on a program downloading method for car-mounted terminal, it is characterized in that, comprising:
First car-mounted terminal with the communication range of other car-mounted terminal in receive the broadcast that at least one car-mounted terminal sends, described broadcast comprise car-mounted terminal mark, can the programm name of program downloading, and the sequence number of the Downloadable program content data sheet corresponding with described programm name;
All broadcasts that described first car-mounted terminal is currently received according to the first program name query of program to be downloaded, judge whether to exist the broadcast comprising described first programm name, if so, then determine the second car-mounted terminal carrying out downloading;
Described first car-mounted terminal sends to described second car-mounted terminal and comprises the downloading request message of described first programm name, and receive that described second car-mounted terminal returns corresponding with described first programm name, with the program content data sheet of sequence number sequence identification;
Wherein, in corresponding with described first programm name, with the program content data sheet of sequence number sequence identification the process that described second car-mounted terminal of described reception returns, described method also comprises:
Whether described first car-mounted terminal monitoring occurs downloading interrupts, if, then according to all broadcasts that interrupt sequence inquiry is currently received, judge whether to exist the broadcast comprising described first programm name and described interrupt sequence number, if so, the 3rd car-mounted terminal continuing to download then is determined;
Described first car-mounted terminal sends the downloading request message comprising described first programm name and described interrupt sequence number to described 3rd car-mounted terminal, and receives program content data sheet that is that described 3rd car-mounted terminal returns, corresponding with described first programm name, sequence identification from described interrupt sequence number;
Wherein, described interrupt sequence number is between described first car-mounted terminal and described second car-mounted terminal after communication disruption, the sequence number of the next program content data sheet that described first programm name of the pending download of described first car-mounted terminal is corresponding.
2. the program downloading method based on car-mounted terminal according to claim 1, is characterized in that, described appearance is downloaded interruption and comprised:
Described second car-mounted terminal rolls described communication range away from; Or,
According to self and the positional information of described second car-mounted terminal, described first car-mounted terminal judges whether described second car-mounted terminal arrives the critical zone of default described communication range, if so, then send to described second car-mounted terminal and download interrupt instruction.
3. the program downloading method based on car-mounted terminal according to claim 1 and 2, is characterized in that, if described first car-mounted terminal judges to know the broadcast not existing and comprise described first programm name, described method also comprises:
Described first car-mounted terminal sends to the base station of ownership the downloading request message comprising described first programm name, for the rendition list that described base station stores according to described first program name query this locality, judge whether described the rendition list comprises described first programm name, if, then return corresponding with described first programm name to described first car-mounted terminal, with the program content data sheet of sequence number sequence identification, otherwise, the downloading request message comprising described first programm name is sent to content distributing network, and receive that described content distributing network returns corresponding with described first programm name, send to described first car-mounted terminal with the program content data sheet of sequence number sequence identification.
4. the program downloading method based on car-mounted terminal according to claim 1 and 2, is characterized in that, the communication protocol of corresponding with described communication range, the first car-mounted terminal and all the other car-mounted terminals comprises:
WAP (wireless access protocol) under automotive environment, 3G (Third Generation) Moblie agreement.
5. a car-mounted terminal, is characterized in that, comprising:
Receiver module, for with the communication range of other car-mounted terminal in receive the broadcast that at least one car-mounted terminal sends, described broadcast comprise car-mounted terminal mark, can the programm name of program downloading, and the sequence number of the Downloadable program content data sheet corresponding with described programm name;
Processing module, for all broadcasts be currently received according to the first program name query of program to be downloaded, judges whether to exist the broadcast comprising described first programm name, if so, then determines the second car-mounted terminal carrying out downloading;
First download module, comprise the downloading request message of described first programm name for sending to described second car-mounted terminal, and receive that described second car-mounted terminal returns corresponding with described first programm name, with the program content data sheet of sequence number sequence identification;
Whether monitoring modular, interrupt for monitoring to occur downloading in the process of program content data sheet that is corresponding with described first programm name, that identify with sequence number that returns at described second car-mounted terminal of described reception;
Described processing module, also have no progeny in downloading in appearance, according to all broadcasts that interrupt sequence inquiry is currently received, judge whether to exist the broadcast comprising described first programm name and described interrupt sequence number, if so, the 3rd car-mounted terminal continuing to download then is determined;
Described first download module, also for sending the downloading request message comprising described first programm name and described interrupt sequence number to described 3rd car-mounted terminal, and receive program content data sheet that is that described 3rd car-mounted terminal returns, corresponding with described first programm name, sequence identification from described interrupt sequence number;
Wherein, described interrupt sequence number is between described first car-mounted terminal and described second car-mounted terminal after communication disruption, the sequence number of the next program content data sheet that described first programm name of the pending download of described first car-mounted terminal is corresponding.
6. car-mounted terminal according to claim 5, is characterized in that, described monitoring modular specifically for:
Judge whether described second car-mounted terminal arrives the critical zone of default described communication range according to self and the positional information of described second car-mounted terminal, if so, then send to described second car-mounted terminal and download interrupt instruction.
7. the car-mounted terminal according to claim 5 or 6, is characterized in that, described car-mounted terminal also comprises:
Second download module, if judge to know the broadcast not existing and comprise described first programm name for described processing module, base station then to ownership sends the downloading request message comprising described first programm name, for the rendition list that described base station stores according to described first program name query this locality, judge whether described the rendition list comprises described first programm name, if, then return corresponding with described first programm name to described first car-mounted terminal, with the program content data sheet of sequence number sequence identification, otherwise, the downloading request message comprising described first programm name is sent to content distributing network, and receive that described content distributing network returns corresponding with described first programm name, send to described first car-mounted terminal with the program content data sheet of sequence number sequence identification.
8. based on a program download system for car-mounted terminal, it is characterized in that, comprise at least two car-mounted terminals, one of them car-mounted terminal is the arbitrary described car-mounted terminal of claim 5-7.
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| JP6701188B2 (en) * | 2014-10-08 | 2020-05-27 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Method for exchanging information between in-vehicle terminals |
| CN105554120A (en) * | 2015-12-18 | 2016-05-04 | 宇龙计算机通信科技(深圳)有限公司 | Data transmission method and data transmission device for vehicle communication, road side units |
| CN107948935B (en) * | 2017-11-21 | 2020-08-07 | 可可家里（北京）信息技术有限公司 | Car networking multimedia system |
| WO2021195901A1 (en) * | 2020-03-30 | 2021-10-07 | 华为技术有限公司 | Data processing method and apparatus |
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| CN102111426A (en) * | 2009-12-23 | 2011-06-29 | 中国移动通信集团公司 | Method, system and device for implementing point-to-point technology |
| CN101160942B (en) * | 2005-08-12 | 2011-08-10 | 华为技术有限公司 | Method and system for mobile terminal downloading data and data sharing between mobile terminals |
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| CN1679028A (en) * | 2002-08-29 | 2005-10-05 | 松下电器产业株式会社 | Content processing apparatus and content display apparatus |
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| CN101160942B (en) * | 2005-08-12 | 2011-08-10 | 华为技术有限公司 | Method and system for mobile terminal downloading data and data sharing between mobile terminals |
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