CN102376165A - Traffic condition differential release method and system - Google Patents
Traffic condition differential release method and system Download PDFInfo
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- CN102376165A CN102376165A CN2010102594862A CN201010259486A CN102376165A CN 102376165 A CN102376165 A CN 102376165A CN 2010102594862 A CN2010102594862 A CN 2010102594862A CN 201010259486 A CN201010259486 A CN 201010259486A CN 102376165 A CN102376165 A CN 102376165A
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Abstract
The invention relates to a traffic condition differential release method and a traffic condition differential release system. The method comprises that: firstly, a terminal sends a current time identification number of the terminal to a server; the server judges whether the time identification number from the terminal is continuous with a current time identification number of the sever; when the time identification number of the terminal is incontinuous with the current time identification number of the server, the server sends the latest road condition information to the terminal; when the time identification number of the terminal is continuous with the current time identification number of the server, the server performs the differential treatment on the road condition information corresponding to the current time identification number of the server and the road condition information corresponding to the time identification number of the server and sends the differential road condition data to the terminal; and finally, the terminal updates the road condition information of the terminal on the basis of the differential road condition data. When the method and the system are used, the seamless upgrade of the map of the terminal is realized; and the method and the system can be widely used in traffic condition release systems.
Description
Technical field
The present invention relates to the intelligent transportation system field, relate in particular to the issue of real-time road in the traffic system.
Background technology
At present, the real-time road condition information issued of the dynamic information provider (hereinafter to be referred as provider) of main flow is made up of highway section indication field and congestion field usually.
Segment mark shows that Field Definition is different though different providers satisfies the need; But the Core Feature of highway section indication field all is consistent---promptly relevant position on congestion and the map is carried out relatedly, make the congestion in road situation correctly to be presented on the map correspondence position through the highway section indication field.
The congestion field usually by expression block up, jogging, unimpeded coded representation; The same with the highway section indication field; Though different providers to block up, the marker method of jogging, unimpeded three kinds of states different (if any provider represent respectively with A, B, C block up, jogging and unimpeded; The provider that has with 1,2,3 respectively the representative block up, jogging and unimpeded); Yet each provider all is consistent to the definition of congestion---the highway section garage average velocity that is about to calculate is referred in the speed interval of Three Estate, and each speed interval itself is just represented a kind of congestion.
At present, the real-time road release model that nearly all provider all adopts full dose to issue that is to say, the every congestion information that will receive all highway sections in the real-time road coverage at a distance from five minutes of user.Yet; Though the average speed in per five minutes highway sections is different, when being referred to these different speed of a motor vehicle in the speed interval, highway section congestion basically identical; As the first five minute certain highway section congestion for blocking up, when the first five minute this highway section congestion often also block up.
Therefore; Whenever send a highway section congestion at a distance from five minutes in the classic method and not only concerning the user, have no meaning; But also can take a large amount of communication traffic, and having increased user's use cost greatly, big data quantity transmission simultaneously also can bring potential hazard to the stability and the security of transmission.
In addition; For the traffic information that makes the service end issue can correctly be shown on car-mounted terminal; Also need the map of service end and the map of car-mounted terminal to obtain correct match, the road conditions congestion information of service end issue can correctly be reflected on the respective stretch like this.
At present, obtain correct coupling, adopt matching list (Matching table) method to realize usually in order to make service end map and car-mounted terminal map.This matching list is provided by provider, and its effect is to make the map of the map of service end and car-mounted terminal set up mapping relations one to one through unique separately road section ID.
Car-mounted terminal can promptly correspond to the highway section congestion information from service end on the map of oneself through matching list, and correct showing.
This shows that in time correct renewal of matching list is a basic prerequisite of issue real-time road data.But in this process, if the map of service end changes, present way is to need the user manually to replace matching list.Because it is comparatively loaded down with trivial details to upgrade the work that relates to, so certain customers tend to the refusal renewal.Will cause the user who initiatively upgrades matching list can normally use service end like this; And for the user who refuses to upgrade matching list; In order not stop service to this part user; Provider has to think that at the map datum of the original legacy version of service end continuation maintenance the user who does not upgrade matching list as yet provides the traffic issuing service.In the course of time; For provider; Need set up a huge repository and manage distributing data, and the situation of new and old edition map datum coexistence on publisher server can As time goes on increasing existence, increased the maintenance difficulties and the workload of provider so undoubtedly.Simultaneously also because the effect that whole renewal process fails to accomplish to realize automatically seamless transitions; So do not upgrade the user of matching list can not obtain all the time with the up-to-date map be the basis traffic information, make provider can't guarantee all users are provided the service of peer-level.
Summary of the invention
The invention provides a kind of traffic difference dissemination method and system that can overcome the above problems.
In first aspect, the invention provides a kind of traffic dissemination method, wherein, message exchange is carried out with wireless mode in service end and terminal.At first its current time marking number (time-id) is sent to this service end in this terminal; Service end judges whether this time marking number that comes self terminal is continuous with the current time identification number then; When the time marking at this terminal number and current time identification number consecutive hours, the traffic information that service end is corresponding with the current time identification number and the time marking number pairing traffic information at this terminal are done difference processing, again this difference road condition data are sent to this terminal; The traffic information at this terminal is upgraded based on said difference road condition data in last terminal, thereby obtains up-to-date traffic information.
Further, when the time marking that determines the terminal number when the current time, identification number was discontinuous, service end is sent up-to-date traffic information to the terminal.
Further, this traffic dissemination method is further comprising the steps of: at first this terminal current map version number is sent to service end in this terminal; Then this server relatively the map version number at this terminal whether be up-to-date map version number; When the map version number at this terminal was not up-to-date map version number, this service end was upgraded the map datum at this terminal.
In second aspect, the invention provides a kind of traffic delivery system, this system comprises service end and terminal, and message exchange is carried out with wireless mode in this service end and this terminal.
This terminal is used for sending its current time marking number (time-id) to service end; And be used to receive difference road condition data from this service end, and upgrade the traffic information at this terminal based on this difference road condition data, thus obtain up-to-date traffic information.
Whether this service end is used to judge from the time marking at this terminal number continuous with the current time identification number; When the time marking of judging this terminal number and current time identification number consecutive hours; This service end will this current time marking correspondence traffic information and the time marking number pairing traffic information at this terminal do difference processing, again this difference road condition data is sent to this terminal.
The present invention cooperatively interacts through service end and terminal; Realized seamless upgrade to terminal map; Reduced the workload of service end upgrade maintenance effectively, and can significantly improve transmission of Information efficient, reduced communications cost through differential technique transmission traffic information.
In addition, the present invention upgrades the user side map through the road network matching way, and this method does not need user's manual operation in whole renewal process, has avoided the user not go to upgrade the problem of map because of trouble fully.This kind upgrades the mode of map automatically, for Information Provider, greatly reduces maintenance cost, for the user, can obtain up-to-date real-time road condition information all the time.
Description of drawings
Below with reference to accompanying drawings specific embodiments of the present invention is explained in more detail, in the accompanying drawings:
Fig. 1 is the traffic difference delivery system synoptic diagram of one embodiment of the invention;
Fig. 2 is the traffic difference issue process flow diagram of one embodiment of the invention;
Fig. 3 is the road network coupling synoptic diagram of one embodiment of the invention.
Embodiment
Fig. 1 is the traffic difference delivery system synoptic diagram of one embodiment of the invention; This system comprises service end 110 and car-mounted terminal 120; Wherein, service end 110 is carried out information interaction with this car-mounted terminal 120 through wireless network, and these car-mounted terminal 120 quantity are more than or equal to 1.
Fig. 2 is the traffic difference issue process flow diagram of one embodiment of the invention.
In step 210, car-mounted terminal 120 is to service end 110 request authentications, and after authentication was passed through, car-mounted terminal 120 can land to service end 110, thereby car-mounted terminal 120 can carry out data communication with service end 110.
In step 220, car-mounted terminal 120 sends its current map version numbers to service end 110, with and current time-id (time marking number).
Time-id is defined as: was that a time-interval averaging is divided into 288 parts with the time (24 hours) with 5 minutes, in order each time period was numbered, thereby made each all have a unique sign in 5 minutes.That is to say that if 0 o'clock to 0: 5 time-id is 1, then 0: 5 to assign to 0: 10 time-id be 2 ..., 23: 50 assign to 23: 55 time-id be 287,23: 55 assign at 24 time-id be 288.
Need to prove that time-id also can carry out five equilibrium with the time with random time Duan Weiyi time interval such as 4 minutes, 6 minutes, in order each time period is numbered then.
In step 230, whether server 110 is up-to-date map version number from the map version number of car-mounted terminal 120 relatively.
Particularly; Service end 110 has been stored the map datum of latest edition and has correspondingly been schemed the B of version number; Therefore service end 110 is after receiving the A of map version number of car-mounted terminal; Relatively whether the A of this map version number is consistent with the B of up-to-date map version number, and then judges whether the map version of this car-mounted terminal is latest edition.
In step 231, when the map of car-mounted terminal 120 is not latest edition, the map datum of service end 110 renovated bus mounted terminals 120, concrete update method will be elaborated in following content.
In step 240, when the map of car-mounted terminal 120 was latest edition, whether service end 110 was judged continuous from the time-id and the current time time-id of car-mounted terminal.Like car-mounted terminal time-id is that 11 service end time-id are 12, and then these two time-id are continuous; If car-mounted terminal time-id is 11 and service end time-id is 13, then these two time-id are discontinuous.
In step 241; When the time-id of car-mounted terminal and current time time-id are discontinuous; Service end 110 is sent up-to-date traffic information to car-mounted terminal 120, promptly sends the corresponding traffic information of current time-id to car-mounted terminal 120, thereby makes this car-mounted terminal 120 obtain up-to-date traffic information.
In step 250; Time-id and current time time-id consecutive hours when car-mounted terminal; Service end 110 is done difference processing with the corresponding traffic information of current time-id with the corresponding traffic information of car-mounted terminal time-id, and then the difference road conditions that obtain are sent to car-mounted terminal 120.
Need to prove; Service end storage current time traffic information (being up-to-date traffic information) and previous moment traffic information; When car-mounted terminal time-id and current time time-id consecutive hours; Car-mounted terminal time-id is previous moment time-id, and therefore, service end can be carried out differential ratio to current time traffic information and car-mounted terminal traffic information.Service end is only stored current time traffic information and previous moment traffic information, has reduced the workload to the road conditions data maintenance, has practiced thrift equipment cost.
Concrete difference processing method is: to every highway section in the service end overlay area; Its current road condition (being the pairing road condition of current time-id) and previous moment road condition (being the pairing road condition of last time-id) are compared; This road condition comprise block up, slow, unimpeded, no datat; Extract the current road condition in the different highway section of road condition and this highway section then, again the information of being extracted is sent to car-mounted terminal 120.
In step 260, car-mounted terminal 120 receives the difference road conditions from service end 110, and based on the road condition data of this this car-mounted terminal 120 of difference road condition updating, thereby obtain up-to-date traffic information.
How to set forth the map datum of renovated bus mounted terminal below in detail.
Fig. 3 is the road network coupling synoptic diagram of one embodiment of the invention, and wherein, last figure is service end map and a plurality of car-mounted terminal map corresponding relation synoptic diagram, and figure below upgrades synoptic diagram for the car-mounted terminal matching list.Need to prove that present embodiment is that example is set forth with 3 car-mounted terminal a, b, c only, in fact car-mounted terminal quantity is not limit.
Among Fig. 3, the map before service end is upgraded is Map-A, and the map after the renewal is Map-B, and the map before car-mounted terminal a, b, c upgrade is respectively Map-a, Map-b, Map-c; Before map upgraded, the matching list of service end and car-mounted terminal a, b, c was respectively A-a, A-b, A-c; The table of comparisons that service end is upgraded after preceding and the renewal is A-B.The matching list A-a of car-mounted terminal a, b, c, A-b, A-c are carried out the map difference processing with the table of comparisons A-B of service end respectively, thereby obtain matching list a-B, b-B, c-B after each car-mounted terminal upgrades.
Car-mounted terminal upgrades the map datum of this car-mounted terminal based on the matching list after upgrading, thereby makes it have up-to-date electronic chart.Below set forth the matching list of how passing through after map difference processing method obtains to upgrade.
Map upgrades and relates generally to four aspects: the highway section merges, the highway section splits, the highway section increases, the highway section deletion.
(1) highway section merges: suppose two the highway section A001, the A002 that in service end, are marked, upgrade at map and then merged into a highway section B003, and establish this highway section A001, A002 and in car-mounted terminal, marked by symbol a01.Wherein, A, B be respectively the map version number before service end is upgraded and upgrade after map version number, a is the map version number before car-mounted terminal upgrades, 001,002,003,01 respectively representative correspondingly scheme the highway section in the version.
Before the map of service end and car-mounted terminal all upgrades, in the matching list A-a of car-mounted terminal, in the service end in highway section A001, A002 and the car-mounted terminal matching relationship between the a01 of highway section be A001, A002 → a01; After the service end map upgrades; The corresponding relation of highway section B003 in service end table of comparisons A-B after highway section A001, A002 and the renewal before upgrading for
then according to this matching relationship A001, A002 → a01 and this corresponding relation
thus obtain the up-to-date matching relationship a01 → B003 in this merging highway section in the car-mounted terminal, this matching relationship has constituted a key element among the matching list a-B after the renewal of car-mounted terminal map.
Need to prove that in electronic chart, service end is different to the mode that same highway section marks with car-mounted terminal, generally,, need a plurality of marks to represent in service end in the same highway section that car-mounted terminal demonstrates.Therefore, in above example, the highway section that service end is represented with two label A001, A002, car-mounted terminal is only represented with a label a01.
(2) highway section splits: suppose the highway section A001 that in service end, marked after the map renewal, to be split as highway section B002, B003, and establish this highway section A001 and in car-mounted terminal, marked by symbol a01.
Before the map of service end and car-mounted terminal all upgrades, in the matching list A-a of car-mounted terminal, in the service end in highway section A001 and the car-mounted terminal matching relationship between the a01 of highway section be A001 → a01; After the service end map upgraded, highway section A001 before upgrading and highway section B002, the corresponding relation of B003 in service end table of comparisons A-B after the renewal were
B003; Then according to this matching relationship A001 → a01 and this corresponding relation
B003; Thereby obtain that the up-to-date matching relationship in this fractionation highway section is a01 → B002, B003 in the car-mounted terminal, this matching relationship has constituted a key element among the matching list a-B after the car-mounted terminal map upgrades.
(3) highway section increases: former matching relationship is constant, and only newly-increased matching relationship, this newly-increased matching relationship have constituted a key element among the matching list a-B after the renewal of car-mounted terminal map.
(4) highway section deletion: suppose to upgrade two the highway section A001, the A002 that in service end, are marked the back at map and deleted a highway section A001, and establish this highway section A001, A002 and in car-mounted terminal, mark by symbol a01.
Before the map of service end and car-mounted terminal all upgrades, in the matching list A-a of car-mounted terminal, in the service end in highway section A001, A002 and the car-mounted terminal matching relationship between the a01 of highway section be A001, A002 → a01; After the service end map upgrades; The corresponding relation of highway section A002 in service end table of comparisons A-B after highway section A001, A002 and the renewal before upgrading for
then according to this matching relationship A001, A002 → a01 and this corresponding relation
thus obtain the up-to-date matching relationship a01 → B003 in the car-mounted terminal, this matching relationship has constituted a key element among the matching list a-B after the renewal of car-mounted terminal map.
The up-to-date matching relationship that obtains more than the car-mounted terminal basis obtains up-to-date matching list a-B, and then obtains up-to-date electronic chart.
Need to prove that it is a car-mounted terminal that the above car-mounted terminal not merely is defined to, and also can be any terminal device, like mobile phone terminal.
Obviously, under the prerequisite that does not depart from true spirit of the present invention and scope, the present invention described here can have many variations.Therefore, the change that all it will be apparent to those skilled in the art that all should be included within the scope that these claims contain.The present invention's scope required for protection is only limited described claims.
Claims (10)
1. traffic difference dissemination method, wherein, message exchange is carried out with wireless mode in service end and terminal, it is characterized in that, comprising:
Step a, its current time marking number (time-id) is sent to this service end in this terminal;
Step b, whether this service end is judged from this time marking at this terminal number continuous with the current time identification number;
Step c; When the time marking at this terminal number and current time identification number consecutive hours; The traffic information that this service end is corresponding with the current time identification number and the time marking number pairing traffic information at this terminal are done difference processing, and then this difference road condition data is sent to this terminal;
Steps d, the traffic information at this terminal is upgraded based on said difference road condition data in this terminal, thereby obtains up-to-date traffic information.
2. a kind of traffic difference dissemination method as claimed in claim 1 is characterized in that, the time marking number that determines the terminal as said step b is when the current time, identification number was discontinuous, and this service end is sent up-to-date traffic information to this terminal.
3. a kind of traffic difference dissemination method as claimed in claim 1 is characterized in that difference processing comprises described in the step c:
Step m; To every highway section in this service end overlay area; With the pairing road condition of each highway section current time identification number, compare with last time marking number pairing road condition, extract the different current road condition in highway section and this highway section of road condition.
4. a kind of traffic difference dissemination method as claimed in claim 3 is characterized in that, said road condition comprise block up, one or more in slow, unimpeded, the no datat.
5. a kind of traffic difference dissemination method as claimed in claim 1 is characterized in that, said time marking number (time-id) is the unique number that each time period in one day has been done.
6. a kind of traffic difference dissemination method as claimed in claim 1 is characterized in that, before step a, comprises:
Step e, this terminal is to service end request authentication, and after authentication was passed through, this terminal was landed to service end, so that this terminal and service end are carried out data communication.
7. a kind of traffic difference dissemination method as claimed in claim 1 is characterized in that said step a comprises:
Step f, this terminal current map version number is sent to service end in this terminal;
Whether step g, this server relatively the map version number at this terminal are up-to-date map version number; When the map version number at this terminal was not up-to-date map version number, this service end was upgraded the map datum at this terminal.
8. a kind of traffic difference dissemination method as claimed in claim 7 is characterized in that the step of said renewal terminal map data comprises:
Step h, the table of comparisons (A-B) after upgrading with map before said service end is sent this service end map and upgraded is to the terminal;
Step j, this terminal is upgraded this terminal map preceding matching list (A-a) and is done the map difference processing from the table of comparisons (A-B) of service end, thereby obtains the matching list (a-B) after this terminal map upgrades;
Step k, the matching list (a-B) of this terminal after based on said renewal upgraded the map datum at this terminal, thereby makes this terminal have up-to-date electronic chart.
9. a kind of traffic difference dissemination method as claimed in claim 8 is characterized in that, said map upgrade relate to that the highway section merges, the highway section splits, the highway section increases, one or more in the deletion of highway section.
10. traffic difference delivery system, this system comprises service end and terminal, and this service end and this terminal carry out message exchange with wireless mode, it is characterized in that:
Said terminal is used for sending its current time marking number (time-id) to said service end; And be used to receive difference road condition data from this service end, and upgrade the traffic information at this terminal based on this difference road condition data, thus obtain up-to-date traffic information;
Whether said service end is used to judge from the time marking at this terminal number continuous with the current time identification number; When the time marking of judging this terminal number and current time identification number consecutive hours; This service end will this current time marking correspondence traffic information and the time marking number pairing traffic information at this terminal do difference processing, again this difference road condition data is sent to this terminal.
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| CN2010102594862A CN102376165A (en) | 2010-08-20 | 2010-08-20 | Traffic condition differential release method and system |
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