CN102340531A - Upgrading server, vehicle-mounted terminal as well as method and system for remote upgrading - Google Patents
Upgrading server, vehicle-mounted terminal as well as method and system for remote upgrading Download PDFInfo
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- CN102340531A CN102340531A CN2010102386075A CN201010238607A CN102340531A CN 102340531 A CN102340531 A CN 102340531A CN 2010102386075 A CN2010102386075 A CN 2010102386075A CN 201010238607 A CN201010238607 A CN 201010238607A CN 102340531 A CN102340531 A CN 102340531A
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Abstract
The invention provides an upgrading server, a vehicle-mounted terminal as well as a method and system for remote upgrading, wherein the method comprises: the vehicle-mounted terminal generates and sends a downloading request comprising the preset transmitting capacity value of a current communication network after the communication network is switched; and the upgrading server distributes upgrading data packets to the vehicle-mounted terminal according to the transmitting capacity value. According to the invention, packet loss and congestion can be avoided, and the downloading efficiency of the upgrading data packets is promoted, thereby further improving the upgrading efficiency.
Description
Technical field
The present invention relates to the car-mounted terminal field, be specifically related to the method and system of a kind of upgrade server, car-mounted terminal and remote upgrade thereof.
Background technology
Deep popularization and vehicle-bone global positioning system (Global Positioning System along with positioning service; Abbreviation GPS) terminal use develops rapidly; The function of GPS terminal is more and more sound, has produced some remote radio upgrade method for onboard GPS terminal.Be in 200710123903.9 the method like application number; At first send upgrading inquiry request to Surveillance center by car-mounted terminal; Transmit upgrade software by Surveillance center to car-mounted terminal again, and after end of transmission and verification were passed through, car-mounted terminal carried out the installation and upgrade of terminal software.Also has upgrade method in addition between different agreement; As at wireless transmission control protocol (Wireless Transfer Control Protocol; Abbreviation WTCP) and between two kinds of communications protocol of TFTP (Trivial File Transfer Protocol is called for short TFTP) automatically switch.Yet said method has only been realized the remote transmission of upgrade software, to growing 3G (Third Generation) Moblie technology (3rd-generation; Be called for short 3G) network; Do not have corresponding solution, cause to be applied under the 3G network scene, simultaneously; Also can't select transmission policy with the lifting download efficiency according to concrete network application scene, and then the efficient of influence upgrading; In addition,, can't guarantee that then the terminal upgrades to the terminal in the continued of reaching the standard grade again, cause packet completely not receive if breakpoint (suspension, outage) situation in escalation process, occurs.
Summary of the invention
First purpose of the present invention is the method that proposes the high car-mounted terminal remote upgrade of a kind of efficient of upgrading.
Second purpose of the present invention is to propose the high car-mounted terminal of a kind of efficient of upgrading.
The 3rd purpose of the present invention is to propose the high upgrade server of a kind of efficient of upgrading.
The 4th purpose of the present invention is the system that proposes the high car-mounted terminal remote upgrade of a kind of efficient of upgrading.
For realizing above-mentioned first purpose, the invention provides a kind of method of car-mounted terminal remote upgrade, comprising: car-mounted terminal generates and sends the download request of the transmittability value that comprises preset current communication network after switching communication network; Upgrade server issues upgrading data packet to car-mounted terminal according to the transmittability value.
For realizing above-mentioned second purpose, the invention provides a kind of car-mounted terminal, comprising: processing module is used for after switching communication network, generating the upgrading data packet download request of the transmittability value that comprises preset current communication network; Sending module is used to send the upgrading data packet download request.
For realizing above-mentioned the 3rd purpose, the invention provides a kind of upgrade server, comprising: pass and receive module, be used to receive the download request of the transmittability value that comprises current communication network; Issue module, be used for issuing upgrading data packet according to the transmittability value.
For realizing above-mentioned the 4th purpose, the invention provides a kind of system of car-mounted terminal remote upgrade, comprising: car-mounted terminal is used for after switching communication network, generating and sending the download request of the transmittability value that comprises preset current communication network; Upgrade server is used for issuing upgrading data packet to car-mounted terminal according to the transmittability value.
Among each embodiment of the present invention; Through the transmittability value of car-mounted terminal according to current communication network; The size of dynamic adjustments request data download bag so that upgrade server issues the data message of upgrading data packet according to the real-time Transmission ability gradation of network, is avoided packet loss and congested; Promote the download efficiency of upgrading data packet, and then improve upgrading efficient.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention in the lump with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is embodiment one flow chart of the method for car-mounted terminal remote upgrade of the present invention;
Fig. 2 is embodiment two signaling diagrams of the method for car-mounted terminal remote upgrade of the present invention;
Fig. 3 is embodiment three signaling diagrams of the method for car-mounted terminal remote upgrade of the present invention;
Fig. 4 is the example structure figure of car-mounted terminal of the present invention;
Fig. 5 is the example structure figure of upgrade server of the present invention;
Fig. 6 is the system implementation example structure chart of car-mounted terminal remote upgrade of the present invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
Method embodiment
Fig. 1 is embodiment one flow chart of the method for car-mounted terminal remote upgrade of the present invention.As shown in Figure 1, present embodiment comprises:
Step S102: car-mounted terminal generates and sends the download request of the transmittability value that comprises preset current communication network after switching communication network; Concrete explaining referring to Fig. 2 and Fig. 3;
Step S104: upgrade server issues upgrading data packet to car-mounted terminal according to the transmittability value; Concrete explaining referring to Fig. 2 and Fig. 3.
Present embodiment is through the transmittability value of car-mounted terminal according to current communication network; The size of dynamic adjustments request data download bag; So that upgrade server issues the data message of upgrading data packet according to the real-time Transmission ability gradation of network; Avoid packet loss and congested, promote the download efficiency of upgrading data packet, and then improve upgrading efficient.
Fig. 2 is embodiment two signaling diagrams of the method for car-mounted terminal remote upgrade of the present invention.As shown in Figure 2, present embodiment comprises:
Step 201, the upgrading inquiry request that upgrade server sends;
After step 202, car-mounted terminal are received this upgrading inquiry request, respond this upgrading inquiry request, received this upgrading inquiry request with expression as sending feedback information to upgrade server; Simultaneously; Whether car-mounted terminal detects communication network in real time and changes; And network foundation after after switching communication network, passing through to switch and the temporary link between the upgrade server; For example when current communication network becomes the 2G network; Correspondence switches to the 2G network; Or when current communication network became 3G network, correspondence switched to 3G network;
During concrete operations; Also can initiatively apply for upgrading, promptly directly send download request through this car-mounted terminal to upgrade server to the external equipment that upgrade server sends download request or connects this car-mounted terminal by car-mounted terminal by car-mounted terminal or the external equipment that connects this car-mounted terminal;
Step 203; Car-mounted terminal sends the download that comprises car-mounted terminal current software version information to upgrade server and sets up request; During concrete operations; This download is set up and can be comprised the MD5 value in the request with the assurance reliable transmission, can send this according to the KN retransmission mechanism and download the complete transmission of the request of foundation with the assurance data;
Step 204, upgrade server judge whether should download the request of foundation effective, and promptly car-mounted terminal is or/and whether the external equipment current software version is current highest version; If not; Then effective, otherwise invalid, can also be through the legitimacy of this MD5 value inspection parameter; And the response message that effectively the time, will characterize the authentication success link sequence number of a Random assignment (as comprise) is sent to car-mounted terminal, when invalid, replys the response message of sign authentification failure;
After step 205, car-mounted terminal were received the response message that characterizes authentication success, generation comprised the transmittability value of preset current communication network and the download request of upgrading data packet sign, and this download request is sent to upgrade server;
During concrete operations, as, be 256 bytes if current communication network is the maximum single transmittability value of 2G network and preset 2G network, will comprise that then the download request of 256 bytes is sent to upgrade server; If current communication network is that the maximum single transmittability value of 3G network and preset 3G network is 1024 bytes, then the information with this 1024 byte is sent to upgrade server; This download request also can comprise the MD5 value;
After step 206, upgrade server were received this download request, the feedback information that transmission is used to represent to receive this download request was to car-mounted terminal;
Step 207; Upgrade server judges according to the MD5 value in the download request whether this download request is legal; And judging that legal back obtains corresponding upgrading data packet according to the upgrading data packet sign; And the transmittability value according to being comprised in this download request is cut apart upgrading data packet; Obtain the transmission packet that at least one capacity all is less than or equal to this transmittability value, and send transmission packet after cutting apart successively to car-mounted terminal;
For example; The upgrading data packet size is the 500k byte; The transmittability value is the 1K byte, then cuts apart the transmits data packets that upgrading data packet obtains 500 1K bytes according to the transmittability value of this 1K byte, and each partition data bag is carried out label (perhaps the mode according to other identifies); According to the label order partition data bag is sent to car-mounted terminal; Certainly during concrete operations, can directly be sent to car-mounted terminal according to directly cutting apart the transmits data packets that obtains, car-mounted terminal carries out label according to the order that receives to this transmits data packets and obtains upgrading data packet so that package according to each transmits data packets at car-mounted terminal; It will be understood by those skilled in the art that and merge upgrading data packet, and the upgrading data packet after will merging to be issued to car-mounted terminal or external equipment according to the transmittability value of current communication network;
During concrete operations; Car-mounted terminal is in the process that receives transmits data packets; Can detect in real time and whether in the Preset Time interval threshold, receive transmits data packets,, then send re-send request may to upgrade server if do not have; Perhaps under the situation that breakpoint takes place, send the breakpoint transmission request to upgrade server; Upgrade server is when receiving re-send request may; Retransmit transmits data packets according to preset retransmission mechanism (like the KN retransmission mechanism), perhaps when receiving the breakpoint transmission request, come the continuous transmits data packets that passes, wherein according to breakpoint transmission mechanism; The effect of KN retransmission mechanism is that transmitting terminal is after receiving terminal sends instruction; Do not receive that owing to the network reason instruction of receiving terminal responds, issue this instruction automatically again to receiving terminal, guarantee that receiving terminal receives this instruction through the KN retransmission mechanism;
Step 208, upgrade server will be after will cutting apart the transmits data packets that obtains and distributing, and whether will being used to inquire about, the Query Information of all transmits data packets that complete this upgrading data packet of reception comprises is sent to car-mounted terminal; This Query Information can comprise the total amount of data of upgrading data packet, the size of each transmits data packets, the number of transmits data packets and the label of each transmits data packets (the perhaps label of original transmission packet) etc.;
Step 209, car-mounted terminal is replied upgrade server according to the actual reception situation; If actual reception is imperfect then according to the retransmission mechanism request retransmission,, then returns and characterize the complete feedback information of reception to upgrade server if reception is complete;
Step 210, car-mounted terminal are sent when reception is complete and are torn the chain solicited message open to upgrade server;
Step 211, upgrade server are replied and are torn the chain response message open to car-mounted terminal after receiving that this tears the chain solicited message open;
Above-mentioned steps 201-step 211 is described for the upgrading data packet process of downloading; It will be understood by those skilled in the art that in order to improve downloading efficiency in the escalation process, and then improve the efficient of upgrading; Car-mounted terminal is confirmed the size of request data download bag according to the preset transmittability value of current communication network; And then make upgrade server cut apart upgrading data packet, and will cut apart the transmits data packets that obtains and be sent to car-mounted terminal and get final product other technical scheme according to this transmittability value; As; Carry out verification, under generation breakpoint situation, perhaps continue the step that passes or retransmit under the data packet transmission failure scenarios through the MD5 value, realized transmitting better data, for preferred embodiment; Simultaneously, the foundation of provisional communication link has realized the preparation before the data packet communication, avoids sending packet when communication link has not been set up and causes phenomenon such as packet loss, for preferred embodiment; In addition, above-mentioned various response messages, feedback information etc. have been realized complete interaction flow, also for preferred embodiment.
Present embodiment is through the transmittability value of car-mounted terminal based on current communication network; The size of packet is downloaded in the dynamic adjustments request; So that upgrade server cuts apart and issues the data message of upgrading data packet based on this transmittability value; Avoid packet loss and congested, promote the download efficiency of upgrading data packet, and then improve upgrading efficient; Car-mounted terminal detects network environment in real time, is implemented in the automatic switchover between 2G and 3G network, helps expanding the application scenarios of car-mounted terminal.
Fig. 3 is embodiment three signaling diagrams of the method for car-mounted terminal remote upgrade of the present invention, and wherein each module of car-mounted terminal explains referring to the description of Fig. 4.As shown in Figure 3, present embodiment comprises:
During concrete operations, can also comprise:
The communication module of car-mounted terminal is after receiving upgrading inquiry request, and the inquiry request of should upgrading is forwarded to administration module;
Administration module is based on object identity and the preset object identity and the corresponding relation of upgrading object; Judge that upgrading object is car-mounted terminal or the external equipment that is connected with car-mounted terminal; And when upgrading object was external equipment, external equipment was sent in the inquiry request of should upgrading;
Administration module receives the download initial request that comprises upgrading data packet sign and external equipment current software version information that external equipment sends; And should download initial request and be sent to communication module, communication module combines this information and transmittability value of current communication network of downloading in initial request to generate download request;
Be sent to external equipment through the inquiry request of will upgrading, and generate download request and then carry out the data download, realized the download right to choose on external equipment according to the download initial request of external equipment feedback;
During concrete operations; Can also comprise: the module of at first upgrading or the external equipment information of successful of after upgrading successfully, will upgrading sends to this administration module; Secondly this administration module sends the upgrading response and gives communication module, and will the upgrade information of completion of this communication module sends to upgrade server at last;
It will be appreciated by those skilled in the art that; In the process of car-mounted terminal data download bag; The transmits data packets real-time Transmission that also can communication module be received is to administration module, and the authentication through administration module, in real time transmits data packets is sent to upgrading module or external equipment.
Present embodiment is through the difference of the administration module in the car-mounted terminal according to object identity, and the judgement upgrade server need be upgraded to car-mounted terminal or external equipment, has realized the expansion of upgrading object; Car-mounted terminal is to remote upgrade server requests download and upgrade packet, in whole upgrading data packet process of downloading, guarantees the complete reception of upgrading data packet through breakpoint transmission mechanism and retransmission mechanism.
Device embodiment
Fig. 4 is the example structure figure of car-mounted terminal of the present invention.Each method embodiment of Fig. 1-shown in Figure 3 is all applicable to present embodiment.Present embodiment comprises: processing module 42 is used for after switching communication network, generating the upgrading data packet download request of the transmittability value that comprises preset current communication network; Sending module 43 is used to send the upgrading data packet download request.
During concrete operations, this device can also comprise:
Receiver module 40 is used to receive the upgrading inquiry request and the upgrading data packet that comprise the object identity that is used to characterize upgrading object; During concrete operations, can also receive external equipment and send the download initial request that comprises the upgrading data packet sign;
Judge module 44 is used for judging that according to object identity upgrading object is car-mounted terminal or the external equipment that is connected with car-mounted terminal;
Transceiver module 45 is used for when upgrading object is external equipment, and upgrading data packet and upgrading inquiry request are sent to external equipment;
Transmission control module 46 generates repeat requests when being used in the Preset Time interval threshold, not receiving upgrading data packet, or when breakpoint occurring, generates continuous biography request, and sends repeat requests and continuous biography request by sending module.
Wherein, the communication module among Fig. 3 can comprise this receiver module 40, processing module 42 and sending module 43; Administration module can comprise this judge module 44 and transceiver module 45, and the upgrading module can comprise this transmission control module 46.Those skilled in the art should be understood that processing module 42 and sending module 43 can realize confirming according to the transmittability of current communication network the size of transmits data packets; Improve downloading efficiency in the escalation process; And then improving the efficient of upgrading, other module is preferred implementation.
In the present embodiment, processing module 42 is according to the transmittability of current communication network, and the size of dynamic adjustments request data download bag is avoided packet loss and congested, promotes the download efficiency of upgrading data packet, and then improves upgrading efficient; Judge module 44 judges that according to the difference of object identity upgrade server is the upgrading to car-mounted terminal or external equipment, has realized the expansion of upgrading object; Transmission management and control module 46 guarantees the complete reception of upgrading data packet in whole upgrading data packet process of downloading, through breakpoint transmission mechanism and retransmission mechanism.
Fig. 5 is the example structure figure of upgrade server of the present invention.Each method embodiment of Fig. 1-shown in Figure 3 is all applicable to present embodiment.Present embodiment comprises: pass and receive module 52, be used to receive the download request of the transmittability value that comprises current communication network; Issue module 54, be used for issuing upgrading data packet according to the transmittability value.During concrete operations; This issues module 54 and can comprise and cut apart submodule (figure do not show); Be used for cutting apart upgrading data packet, obtain the transmits data packets that at least one capacity all is less than or equal to the transmittability value, and send at least one transmits data packets to car-mounted terminal according to the transmittability value.
During concrete operations, this server can also comprise: generation module 50 is used for the formation object sign, and receives module 52 transmission object identities through passing.This biography is received module 52 and can be comprised: interface sub-module 522 is used to receive download request, repeat requests and continuous the biography and asks, and is sent to few transmits data packets; Operator module 524 is used for carrying out according to repeat requests the retransmission operation of transmits data packets, perhaps passes the corresponding continuous biography operation of carrying out transmits data packets of request according to continuous.
Present embodiment is cut apart upgrading data packet and then is carried out transfer of data according to network capacity through issuing module 54, avoids packet loss and congested, promotes the download efficiency of upgrading data packet, and then improves upgrading efficient; Generate the expansion that this object identity helps realizing upgrading object through generation module 50; The integrality and the accuracy of transmission have been promoted through this operator module 524.
System embodiment
Fig. 6 is the system implementation example structure chart of car-mounted terminal remote upgrade of the present invention.Each method embodiment of Fig. 1-shown in Figure 3 is all applicable to present embodiment.Present embodiment comprises: car-mounted terminal 62 is used for after switching communication network, generating and sending the download request of the transmittability value that comprises preset current communication network; Upgrade server 64 is used for issuing upgrading data packet to car-mounted terminal according to the transmittability value, and wherein, the detailed description of car-mounted terminal 62 and upgrade server 64 is explaining referring to Fig. 4 and Fig. 5 respectively.
This system can also comprise: the external equipment (like external equipment 1-external device n) that at least one connects this car-mounted terminal is used for when car-mounted terminal judges that according to object identity upgrading object is external equipment, receiving the upgrading data packet that car-mounted terminal is transmitted.
Present embodiment is through the transmittability of car-mounted terminal 62 according to current communication network; The size of dynamic adjustments request data download bag; So that upgrade server 64 issues the data message of upgrading data packet according to network capacity; Avoid packet loss and congested, promote the download efficiency of upgrading data packet, and then improve upgrading efficient; Car-mounted terminal 62 is according to the difference of object identity, judges that upgrade server is the upgrading to car-mounted terminal or external equipment, realized the expansion of upgrading object, remedied the deficiency that original prior art can only be upgraded to single car-mounted terminal; Car-mounted terminal 62 and each external equipment are when remote upgrade server 64 request download and upgrade packets; Can guarantee the complete reception of upgrading data packet through breakpoint transmission mechanism and retransmission mechanism; Remedied in the prior art after breakpoint takes place drawback that can not complete reception data download.
What should explain at last is: more than be merely the preferred embodiments of the present invention; Be not limited to the present invention; Although the present invention has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. the method for a car-mounted terminal remote upgrade is characterized in that, comprising:
Car-mounted terminal generates and sends the download request of the transmittability value that comprises preset current communication network after switching communication network;
Upgrade server issues upgrading data packet to said car-mounted terminal according to said transmittability value.
2. the method for car-mounted terminal remote upgrade according to claim 1 is characterized in that, the step that after said car-mounted terminal is switching communication network, generates and send the download request of the transmittability value that comprises preset current communication network also comprises before:
Said car-mounted terminal receives the upgrading inquiry request that comprises the object identity that is used to characterize upgrading object; And when judging the external equipment that upgrading object is with said car-mounted terminal is connected, said upgrading inquiry request is sent to said external equipment according to said object identity, wherein upgrading object comprises said car-mounted terminal and external equipment.
3. the method for car-mounted terminal remote upgrade according to claim 2 is characterized in that, said upgrade server issues upgrading data packet to the step of said car-mounted terminal according to said transmittability value after, also comprises:
Said car-mounted terminal is forwarded to said external equipment with said upgrading data packet when judging that according to said object identity upgrading object is said external equipment.
4. require the method for each described car-mounted terminal remote upgrade among the 1-3 according to aforesaid right, it is characterized in that said upgrade server comprises according to the step that said transmittability value issues upgrading data packet to said car-mounted terminal:
Said upgrade server is cut apart upgrading data packet according to said transmittability value, obtains the transmits data packets that at least one capacity all is less than or equal to said transmittability value, and sends said at least one transmits data packets to said car-mounted terminal.
5. the method for car-mounted terminal remote upgrade according to claim 4 is characterized in that, in said at least one transmits data packets of said transmission to the process of said car-mounted terminal step, also comprises:
Send repeat requests when said car-mounted terminal is not received said transmits data packets in the Preset Time interval threshold, or when breakpoint occurring, send the continuous request that passes;
Said upgrade server carries out the retransmission operation of said transmission packet based on said repeat requests, perhaps carries out the continuous biography operation of said transmission packet based on said continuous biography request correspondence.
6. require the method for each described car-mounted terminal remote upgrade among the 1-3 according to aforesaid right, it is characterized in that said current communication network is 2G network or 3G network.
7. a car-mounted terminal is characterized in that, comprising:
Processing module is used for after switching communication network, generating the upgrading data packet download request of the transmittability value that comprises preset current communication network;
Sending module is used to send said upgrading data packet download request.
8. car-mounted terminal according to claim 7 is characterized in that, also comprises:
Receiver module is used to receive the upgrading inquiry request and the upgrading data packet that comprise the object identity that is used to characterize upgrading object;
Judge module is used for judging that according to said object identity upgrading object is car-mounted terminal or the external equipment that is connected with said car-mounted terminal;
Transceiver module is used for when upgrading object is said external equipment, and said upgrading data packet and said upgrading inquiry request are sent to said external equipment.
9. according to claim 7 or 8 described car-mounted terminals, it is characterized in that, also comprise:
Transmission control module generates repeat requests when being used in the Preset Time interval threshold, not receiving said upgrading data packet, or continuous biography of generation asked when breakpoint occurring, and sends said repeat requests and continue the request of biography through said sending module.
10. a upgrade server is characterized in that, comprising:
Pass and receive module, be used to receive the download request of the transmittability value that comprises current communication network;
Issue module, be used for issuing upgrading data packet according to said transmittability value.
11. upgrade server according to claim 10 is characterized in that, also comprises:
Generation module is used for the formation object sign, and receives module through said biography and send said object identity.
12. according to claim 10 or 11 described upgrade servers; It is characterized in that; The said module that issues comprises: cut apart submodule; Be used for cutting apart upgrading data packet, obtain the transmits data packets that at least one capacity all is less than or equal to said transmittability value, and send said at least one transmits data packets to said car-mounted terminal according to said transmittability value.
13. upgrade server according to claim 12 is characterized in that, said biography is received module and is comprised:
Interface sub-module is used to receive said download request, repeat requests and continuous the biography and asks, and sends said at least one transmits data packets;
The operator module is used for carrying out according to said repeat requests the retransmission operation of said transmits data packets, perhaps carries out the continuous biography operation of said transmits data packets according to said continuous biography request correspondence.
14. the system of a car-mounted terminal remote upgrade is characterized in that, comprising:
Car-mounted terminal is used for after switching communication network, generating and sending the download request of the transmittability value that comprises preset current communication network;
Upgrade server is used for issuing upgrading data packet to said car-mounted terminal according to said transmittability value.
15. the system of car-mounted terminal remote upgrade according to claim 14 is characterized in that, also comprises:
At least one and the external equipment that said car-mounted terminal is connected are used for when said car-mounted terminal judges that according to said object identity upgrading object is external equipment, receiving the said upgrading data packet that said car-mounted terminal is transmitted.
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