CN102761834A - System and method for grouping vehicles - Google Patents
System and method for grouping vehicles Download PDFInfo
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- CN102761834A CN102761834A CN2012102282130A CN201210228213A CN102761834A CN 102761834 A CN102761834 A CN 102761834A CN 2012102282130 A CN2012102282130 A CN 2012102282130A CN 201210228213 A CN201210228213 A CN 201210228213A CN 102761834 A CN102761834 A CN 102761834A
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Abstract
The invention provides a system and method for grouping vehicles. The system comprises at least one SINK node and a vehicle-mounted terminal; the SINK node is used for transmitting a broadcast message, wherein the broadcast message comprises a group identifier of a group corresponding to the SINK node; the vehicle-mounted terminal is used for receiving the broadcast message, carrying out judgment according to a group mark stored by the vehicle-mounted terminal, judging the signal intensity of the broadcast message if the condition that the vehicle-mounted terminal is ungrouped is judged, storing the group identifier in the broadcast message when the signal intensity of the broadcast message is higher than the preset first signal intensity threshold, and setting the group mark to be grouped; and the vehicle-mounted terminal is further used for communicating with the SINK node corresponding to the stored group identifier. According to the technical scheme adopted by the invention, the technical problem that the vehicle-mounted terminal is in a mobile state and needs to acquire regional information is solved.
Description
Technical field
The embodiment of the invention relates to communication technical field, relates in particular to a kind of vehicle grouping system and method.
Background technology
Along with the fast development of the communication technology and mobile Internet, automobile possesses communication function, is used for conveniently sending or obtaining information.Auto communication of the prior art generally is through configuration communication module on the car-mounted terminal (2G or 3G) and embedded SIM card, is similar to present mobile phone terminal and realizes.Through car-mounted terminal and base station communication, the base station is searched according to the request of car-mounted terminal and is re-send to car-mounted terminal after obtaining corresponding information in the prior art.But car-mounted terminal is in mobile status usually, need obtain regional information simultaneously, like near the food and drink current road conditions, the car-mounted terminal present position, oiling information etc.This shows, car-mounted terminal is moved the packet communication of form, can make car-mounted terminal be convenient to obtain the information in the zone of living in, and the packet communication that how based on the zone car-mounted terminal is moved form is to need the problem that solves at present based on the zone.
Summary of the invention
The object of the invention is to provide a kind of vehicle grouping system and method, is used to solve car-mounted terminal and is in mobile status, need obtain the technical problem of regional information.
The invention provides a kind of vehicle grouping system, comprising: at least one SINK node and car-mounted terminal;
Said SINK node is used to send broadcast, and said broadcast comprises the corresponding group id that divides into groups of said SINK node;
Said car-mounted terminal; Be used to receive said broadcast, judge, do not divide into groups if judge said car-mounted terminal according to said car-mounted terminal stored packet mark; Then judge the signal strength signal intensity of said broadcast; When the signal strength signal intensity of said broadcast during, store the group id in the said broadcast, and said grouping mark is set to divides into groups greater than preset first signal strength threshold;
Said car-mounted terminal also is used for the SINK node corresponding with the group id of being stored and communicates.
The present invention also provides a kind of vehicle group technology, comprising:
The SINK node sends broadcast, and said broadcast comprises the corresponding group id that divides into groups of said SINK node;
Car-mounted terminal receives said broadcast; Judge according to said car-mounted terminal stored packet mark; Do not divide into groups if judge said car-mounted terminal, judge the signal strength signal intensity of said broadcast, when the signal strength signal intensity of said broadcast during greater than preset first signal strength threshold; Store the group id in the said broadcast, and said grouping mark is set to divides into groups;
The SINK node that said car-mounted terminal is corresponding with the group id that said car-mounted terminal is stored communicates.
The invention provides a kind of vehicle grouping system and method; This technical scheme receives the broadcast that the SINK node sends through car-mounted terminal; Said broadcast comprises the corresponding group id that divides into groups of said SINK node; Car-mounted terminal is judged back completion grouping according to the signal strength signal intensity of current grouping situation and broadcast message, thereby realizes the SINK enabling communication between nodes that divides into groups in car-mounted terminal and its place.Technical scheme of the present invention has solved car-mounted terminal and has been in mobile status, need obtain the technical problem of regional information.
Description of drawings
The working state schematic representation of a kind of vehicle grouping system that Fig. 1 provides for one embodiment of the invention;
The schematic flow sheet of a kind of vehicle group technology that Fig. 2 provides for further embodiment of this invention.
Embodiment
The working state schematic representation of a kind of vehicle grouping system that Fig. 1 provides for one embodiment of the invention; As shown in Figure 1, a kind of vehicle grouping system provided by the invention comprises: at least one SINK node 1 and car-mounted terminal 2; As shown in fig. 1; SINK node 1 is according to area distribution, and corresponding car-mounted terminal inserts the grouping of the SINK node at its place, zone of living in, the grouping shown in oval dotted line among the figure automatically in the vehicle ' process; And through carrying out the mutual of information, like SINK node 1 among Fig. 1 and the signal of the chain-dotted line line between the car-mounted terminal 2 with place grouping SINK node.
Concrete group technology is a SINK node 1, is used to send broadcast, and broadcast comprises the corresponding group id that divides into groups of SINK node.SINK node 1 is for the management of dividing into groups to be in loose formula; Through sending broadcast; And through adding the group id of grouping usefulness in the broadcast; Like SINK1 etc., in the time of in car-mounted terminal 2 is in the scope that this SINK node broadcasts message covers, car-mounted terminal 2 just divides to go into the grouping of this SINK node automatically.
Car-mounted terminal 2; Receive broadcast, judge, do not divide into groups if judge car-mounted terminal according to car-mounted terminal stored packet mark; Then judge the signal strength signal intensity of broadcast; When the signal strength signal intensity of broadcast during, the group id in the stored broadcast message, and the grouping mark is set to divides into groups greater than preset first signal strength threshold.
Communicating by letter between SINK node 1 and the car-mounted terminal 2 selected DSRC for use in the present embodiment; When the SINK node being carried out the position deployment; Consider the effective communication distance 1000m of DSRC, the 20m that has a lot of social connections, and combine the efficient communication time between car-mounted terminal and the SINK node; For the frequent switching that the grouping that prevents between the adjacent S INK node is disturbed and communicated by letter with car-mounted terminal, preferably adopt the interval of maximum communication distance that the SINK node is disposed.That is to say, have following situation, when the intermediate zone of vehicle ' to adjacent S INK node, two broadcast singals that car-mounted terminal receives all are weak situation, and at this moment, car-mounted terminal is not included in any SINK grouping wherein.In addition owing to adopt the layout of above-mentioned SINK node, it all be that the probability of msp signal is very little that car-mounted terminal detects two simultaneously, even this kind situation has taken place, adopts car-mounted terminal not to be included into the processing mode of any SINK grouping wherein.Concrete reason is that vehicle is in high-speed motion, and car-mounted terminal can receive the broadcast singal that the SINK node sends at short notice again, if also receive two broadcast singals this moment, and can accomplish strong and weak the differentiation, then accomplishes and divides into groups.
Car-mounted terminal 2 is for the broadcast that receives; At first whether divided into groups according to grouping marker for judgment oneself; Concrete grouping mark can for example be a two-value number, when being 0, representes not divide into groups as yet, when being 1, representes to divide into groups; This grouping mark also can repeat no more at this for the sign of other types numerical value such as certain sense.
When car-mounted terminal 2 is to divide into groups as yet according to grouping mark judged result, because the grouping system of the embodiment of the invention is based on the zone, so, also need judge the signal strength signal intensity of this broadcast.Reason is mainly; Generally the intensity of signal becomes certain proportional relation with distance; Distance is near more, and then signal strength signal intensity is strong more, so judge that through the signal strength signal intensity of judging broadcast message car-mounted terminal 2 is apart from far and near degree between the SINK node 1 of this transmission broadcast message.
Concrete; For example can the signal strength signal intensity of broadcast message be divided into a plurality of grades; In the present embodiment with a little less than the persistent erection three grades be example; When the signal strength signal intensity of broadcast message when being strong, can confirm that these car-mounted terminal 2 distances send between the SINK node 1 of broadcast messages very closely, be appreciated that in the grouping that is in the SINK node 1 that sends broadcast message.In the time of in the signal strength signal intensity of broadcast message is; Can confirm that this car-mounted terminal 2 distances send between the SINK node 1 of broadcast messages distance in the scope that signal can transmit fast; In addition owing to this car-mounted terminal 2 is not in any grouping, so can it be added the grouping of this SINK node 1 as yet.When the signal strength signal intensity of broadcast message when being weak; Can confirm that this car-mounted terminal 2 is very far away apart from distance between the SINK node 1 that sends broadcast messages,, consider that this car-mounted terminal 2 is in mobile status even divide into groups this moment; Exist car-mounted terminal 2 can't carry out the possibility of efficient communication with the SINK node; So,, do not divide into groups for the signal strength signal intensity of weak broadcast message.
Signal strength signal intensity hierarchy plan according to above-mentioned broadcast message; First signal strength threshold in the present embodiment is the minimum of signal strength signal intensity of the broadcast message of middle rank; That is to say, when the signal strength signal intensity of the broadcast message that receives when car-mounted terminal 2 is in height or middle rank, the group id in can stored broadcast message; And the grouping mark is set to divides into groups, for example the grouping mark is changed to 1.
Car-mounted terminal 2 also is used for the SINK node 1 corresponding with the group id of being stored and communicates.Car-mounted terminal 2 just can communicate with SINK node 1 nearby like this, and car-mounted terminal 2 obtains required information from SINK node 1, or sends information requirement to SINK node 1.
Communicating by letter between concrete car-mounted terminal 2 and the SINK node 1 adopt the DSRC technology (Dedicated Short Range Communications, DSRC).The supported mobility of DSRC is less than 180km/h, and communication distance is less than the operational environment of 1000m, and its traffic rate is generally 3 ~ 27Mbps.
In the present embodiment, the SINK node select is arranged in the roadside, and when vehicle went on the urban road at present, having a lot of social connections and be about 20m in common 6 tracks, then can ignore with respect to communication distance and have a lot of social connections.Approximate think that the overlayable efficient communication scope with car-mounted terminal of SINK node is in 2000 meters; Suppose that the vehicle Mean Speed is 50km/h; Then efficient communication time range is 2/50 hour promptly 2.4 minutes, owing to adopt the method for dividing into groups fast, is 3 ~ 27Mbps in conjunction with the traffic rate of DSRC; As long as the SINK broadcast cycle that design is suitable; Vehicle is consuming time very short to accomplishing the process of dividing into groups from getting into the efficient communication scope, therefore, uses DSRC and can realize that SINK node and car-mounted terminal carry out simple data communication in the present embodiment.
Technical scheme in the present embodiment receives the broadcast that the SINK node sends through car-mounted terminal; Said broadcast comprises the corresponding group id that divides into groups of said SINK node; Car-mounted terminal is judged back completion grouping according to the signal strength signal intensity of current grouping situation and broadcast message, thereby realizes the SINK enabling communication between nodes that divides into groups in car-mounted terminal and its place.Technical scheme of the present invention has solved car-mounted terminal and has been in mobile status, need obtain the technical problem of regional information.
Preferred as technique scheme; Car-mounted terminal 2 also is used for when judging car-mounted terminal 2 and divided into groups; Whether the group id of judging storage in group id and the car-mounted terminal 2 in the broadcast is identical, if different, then judges the signal strength signal intensity of broadcast; When the signal strength signal intensity of broadcast during, the group id of storage in the car-mounted terminal 2 is replaced with the group id in the broadcast greater than preset secondary signal strength threshold.
Because car-mounted terminal 2 is in mobile status, its grouping situation is dynamic, and car-mounted terminal 2 need divide into groups according to the zone, promptly inserts the SINK node 1 of close together.So, car-mounted terminal 2 receive broadcast message and according to this car-mounted terminal of grouping marker for judgment 2 for after dividing into groups, judge that through the signal strength signal intensity of judging broadcast car-mounted terminal 2 is apart from the distance between the SINK node 1.Identical with above-mentioned determination methods, but since this moment car-mounted terminal 2 possessed grouping, have only signal strength signal intensity when the broadcast message that receive to be in just to consider strong the time grouping that it is joined this SINK node 1 place, otherwise keep former grouping.That is to say, when the distance between SINK node 1 and this car-mounted terminal 2 is enough near, just add the grouping at this SINK node 1 place.Secondary signal strength threshold in the present embodiment is the minimum of signal strength signal intensity of the broadcast message of intensity level.Can realize the grouping of car-mounted terminal 2 through this method based on the zone.
As shown in fig. 1, preferred as technique scheme also comprises: base station 3, be connected with SINK node 1, and be used for communicating with SINK node 1.SINK node 1 is communicated by letter with base station 3, can be used for to base station 3 transmission information, for example sends car-mounted terminal 2 and sends to vehicle condition information of SINK node 1 etc., and SINK node 1 is forwarded to base station 3.
Preferred as technique scheme, because the demand of dividing into groups, car-mounted terminal 2 needs two channels of configuration, broadcast reception channel and interactive channel.Car-mounted terminal 2 specifically is used for receiving the broadcast that the SINK node sends through the broadcast reception channel; The corresponding SINK node of group id that car-mounted terminal 2 specifically is used for storing through interactive channel and car-mounted terminal communicates; Wherein, the broadcast reception channel is different with the frequency of interactive channel.The information non-interference of such two interchannels, realize to divide into groups respectively and and SINK node 1 between information interaction.
Preferred as technique scheme; The corresponding SINK node of group id that car-mounted terminal 2 is more concrete is used for storing to car-mounted terminal through interactive channel sends information acquisition request, and receives the object information that the corresponding SINK node of group id that car-mounted terminal 2 stored returns according to the address information of car-mounted terminal 2; Information acquisition request comprises the address information of car-mounted terminal.
Preferred as technique scheme, the address information of car-mounted terminal 2 comprises vehicles identifications.The address information of car-mounted terminal 2 can be the IMSI information in the SIM in the car-mounted terminal 2 in the present embodiment.And at present because the IMSI information resources are limited; Vehicles identifications for car-mounted terminal 2 can use the for example number-plate number of vehicle; The uniqueness sign of vehicles such as engine number can be practiced thrift a large amount of IMSI information resources like this, and the address information of car-mounted terminal 2 also has uniqueness simultaneously.
Communicating by letter between preferred car-mounted terminal 2 and SINK node 1 and the base station 3 is example with following execution mode, and be concrete:
The first information of car-mounted terminal 2 transmissions of SINK node 1 reception SINK node in 1 corresponding the grouping obtains request, the car-mounted terminal transmission first information sign corresponding first information of the address information of the car-mounted terminal in dividing into groups according to SINK node correspondence in the corresponding grouping of SINK node; The first information request of obtaining comprises the address information and the first information sign of the corresponding interior car-mounted terminal that divides into groups of SINK node.This first information sign specifically can use the coding of numeral, letter, numeral or monogram or particular form to represent corresponding information requirement for passing through the sign that car-mounted terminal 2 and SINK node 1 are approved each other.For example the first information that obtains in the request of the first information that sends of car-mounted terminal 2 is designated " abc ", and the required information type of this first information sign " abc " expression is current traffic information.Then the SINK node 1 that divides into groups of this car-mounted terminal 2 places receive first obtain request after; Judge that the first information is designated " abc "; Confirm that these car-mounted terminal 2 required information are current traffic information, so the first information is sent to this car-mounted terminal according to the address information of car-mounted terminal 2.
The SINK node transmission first information that car-mounted terminal 2 divides into groups corresponding to the car-mounted terminal place obtains request, and the first information that corresponding SINK node returns divides into groups at reception car-mounted terminal place.Car-mounted terminal 2 has been avoided the very big load of bringing for base station 3 through realizing obtaining fast of car-mounted terminal 2 regional informations alternately with the SINK node.Through to car-mounted terminal according to group areas; The SINK node that divides into groups in car-mounted terminal and its place communicates; For it area information is provided by the SINK node; When having solved in the prior art the big density distribution of automobile, auto communication will bring very big load to the base station, can cause inserting congested problem in the time of serious.
In addition, the SINK node can obtain the required information of more car-mounted terminal through base station 3 through being connected with base station 3.For example storage in the required a certain information SINK node of car-mounted terminal 2; Then need the SINK node that the information requirement of this car-mounted terminal 2 is forwarded to base station 3; Base station 3 also is connected to core net through network, and is not shown in the accompanying drawing, and the base station obtains corresponding information through core net; Send to car-mounted terminal 2 through SINK node 1 again, thereby realize car-mounted terminal 2 in time obtaining its information needed.
The area information that SINK node 1 also receives by preset frequency and send storage base station 3; Area information is the information of car-mounted terminal 2 correspondences in SINK node 1 region.Because the demand information content of car-mounted terminal 2 generally includes several big type, for example temporal information, road conditions, food and drink, weather, fuel station information etc.So SINK node 1 can be with for example every temporal information of obtaining its region at a distance from 3 minutes, traffic information, catering information, Weather information, fuel station information etc., for the demand of the car-mounted terminal 2 in this SINK node 1 corresponding packet.Concrete predeterminated frequency can confirm that the receive frequency of the peak period SINK node of for example going to work is 1 minute according to for example time point, and midnight equal time section SINK node receive frequency be 15 minutes.The concrete reception information content also can obtain according to actual conditions or through statistical testing of business cycles, promptly waits mode to obtain the situation of the information content that car-mounted terminal 2 needs most by inquiry.SINK node 1 is owing to have certain Regional Distribution property in addition, so SINK node 1 only need get final product through the area information that the base station obtains its region.
SINK node 1 is specifically judged according to the first information sign that the first information obtains in the request; If have in the area information of SINK node storage and the first information that first information sign is corresponding, the address information of the car-mounted terminal in obtaining that the SINK node is corresponding in the request and divide into groups according to the first information sends to the corresponding interior car-mounted terminal that divides into groups of SINK node with the first information.For example current car-mounted terminal 2 sends the first information and obtains request; It comprises first information sign " xyz " and address information " HB073 " thereof; The information that the corresponding needs of concrete first information sign obtain is the weather condition in 24 hours futures of current region; The destination address that sends be the SINK address of node of the grouping at these car-mounted terminal 2 places, concrete when dividing into groups according to it group id of acquisition definite.When SINK node 1 receives after this first information obtains request; Judge that first information sign " xyz " is the weather condition in following 24 hours; And SINK node 1 has stored the corresponding information content in the area information of searching its storage; Then SINK node 1 sends to this car-mounted terminal 2 with this information content as the first information, and the destination address of transmission is the address information " HB073 " of car-mounted terminal.
Carry out the updated stored of area information like this through the SINK node, can save car-mounted terminal visit to the base station when obtaining information, reduce offered load effectively, improve communication efficiency.
When SINK node 1 does not also identify the not corresponding first information with the first information in the area information of SINK node 1 storage; Send second information acquisition request to base station 3; Receive the first information that base station 3 issues according to second information acquisition request, the first information is sent to car-mounted terminal according to the corresponding address information of dividing into groups interior car-mounted terminal of SINK node; Second information acquisition request comprises the address information of first information sign and the corresponding interior car-mounted terminal 2 that divides into groups of SINK node.
For example current car-mounted terminal 2 sends the first information and obtains request; It comprises first information sign " uvw " and address information " HB073 " thereof; The information that the concrete corresponding needs of first information sign obtain is the market shopping information of discount of current region; The destination address that sends be the SINK address of node of the grouping at these car-mounted terminal 2 places, concrete when dividing into groups according to it group id of acquisition definite.When SINK node 1 receives after this first information obtains request; Judge that first information sign " uvw " is the market shopping information of discount; And SINK node 1 does not store the corresponding information content in the area information of searching its storage; Then SINK node 1 obtains the first information sign " uvw " in the request with this first information and the address information " HB073 " of the car-mounted terminal that the SINK node is corresponding in dividing into groups, and sends to the base station 3 of communicating by letter with this SINK node 1 as second information acquisition request.Base station 3 again through with the communicating by letter of core net, obtain and first information sign " uvw " corresponding information content, and the address information " HB073 " of the car-mounted terminal of this information content and correspondence be handed down to SINK node 1.Communicating by letter between base station 3 and the core net is prior art, and particular content repeats no more herein.The first information that SINK node 1 reception base station 3 issues according to second information acquisition request, SINK node 1 sends to car-mounted terminal 2 according to the address information of car-mounted terminal 2 with this first information again.
The concrete communication embodiment of the above-mentioned vehicle grouping system that provides for the embodiment of the invention.
The schematic flow sheet of a kind of vehicle group technology that Fig. 2 provides for further embodiment of this invention, as shown in Figure 2, this vehicle group technology comprises:
Step 11:SINK node sends broadcast, and broadcast comprises the corresponding group id that divides into groups of SINK node;
Step 12: car-mounted terminal receives broadcast; Judge according to car-mounted terminal stored packet mark; Do not divide into groups if judge car-mounted terminal, judge the signal strength signal intensity of broadcast, when the signal strength signal intensity of broadcast during greater than preset first signal strength threshold; Group id in the stored broadcast message, and the grouping mark is set to divides into groups;
Step 13: the SINK node that car-mounted terminal is corresponding with the group id that car-mounted terminal is stored communicates.
Technical scheme in the present embodiment receives the broadcast that the SINK node sends through car-mounted terminal; Said broadcast comprises the corresponding group id that divides into groups of said SINK node; Car-mounted terminal is judged back completion grouping according to the signal strength signal intensity of current grouping situation and broadcast message, thereby realizes the SINK enabling communication between nodes that divides into groups in car-mounted terminal and its place.Technical scheme of the present invention has solved car-mounted terminal and has been in mobile status, need obtain the technical problem of regional information.The implementation procedure of this vehicle group technology is identical with the implementation procedure of vehicle grouping system in the foregoing description, repeats no more at this.
Preferred as technique scheme, this method also comprises:
Divide into groups if judge car-mounted terminal, car-mounted terminal judges whether the group id of storing in group id and the car-mounted terminal in the broadcast is identical;
If judged result is different, car-mounted terminal is judged the signal strength signal intensity of broadcast, when the signal strength signal intensity of broadcast during greater than preset secondary signal strength threshold, the group id of storing in the car-mounted terminal is replaced with the group id in the broadcast.
Preferred as technique scheme, car-mounted terminal receives broadcast and comprises:
Car-mounted terminal receives the broadcast that the SINK node sends through the broadcast reception channel;
The SINK node that car-mounted terminal is corresponding with the group id that car-mounted terminal is stored communicates and comprises:
The SINK node that the group id that car-mounted terminal is stored through interactive channel and car-mounted terminal is corresponding communicates;
Wherein, the broadcast reception channel is different with the frequency of interactive channel.
Preferred as technique scheme, the SINK node that the group id that car-mounted terminal is stored through interactive channel and car-mounted terminal is corresponding communicates and comprises:
The SINK node that the group id that car-mounted terminal is stored to car-mounted terminal through interactive channel is corresponding sends information acquisition request, the object information that the corresponding SINK node of group id that the reception car-mounted terminal is stored returns according to the address information of car-mounted terminal; Information acquisition request comprises the address information of car-mounted terminal.
Preferred as technique scheme, the address information of car-mounted terminal comprises vehicles identifications.
Technical scheme in the present embodiment receives the broadcast that the SINK node sends through car-mounted terminal; Said broadcast comprises the corresponding group id that divides into groups of said SINK node; Car-mounted terminal is judged back completion grouping according to the signal strength signal intensity of current grouping situation and broadcast message, thereby realizes the SINK enabling communication between nodes that divides into groups in car-mounted terminal and its place.Technical scheme of the present invention has solved car-mounted terminal and has been in mobile status, need obtain the technical problem of regional information.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each method embodiment can be accomplished through the relevant hardware of program command.Aforesaid program can be stored in the computer read/write memory medium.This program the step that comprises above-mentioned each method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
What should explain at last is: above each embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although the present invention has been carried out detailed explanation with reference to aforementioned each embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, perhaps to wherein part or all technical characteristic are equal to replacement; And these are revised or replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (11)
1. a vehicle grouping system is characterized in that, comprising: at least one SINK node and car-mounted terminal;
Said SINK node is used to send broadcast, and said broadcast comprises the corresponding group id that divides into groups of said SINK node;
Said car-mounted terminal; Be used to receive said broadcast, judge, do not divide into groups if judge said car-mounted terminal according to said car-mounted terminal stored packet mark; Then judge the signal strength signal intensity of said broadcast; When the signal strength signal intensity of said broadcast during, store the group id in the said broadcast, and said grouping mark is set to divides into groups greater than preset first signal strength threshold;
Said car-mounted terminal also is used for the SINK node corresponding with the group id of being stored and communicates.
2. vehicle grouping system according to claim 1; It is characterized in that; Said car-mounted terminal also is used for when judging said car-mounted terminal and divided into groups; Judge whether the group id of storing in group id and the said car-mounted terminal in the said broadcast is identical,, then judge the signal strength signal intensity of said broadcast if different; When the signal strength signal intensity of said broadcast during, the group id of storing in the said car-mounted terminal is replaced with the group id in the said broadcast greater than preset secondary signal strength threshold.
3. vehicle grouping system according to claim 1 and 2 is characterized in that, also comprises: the base station, be connected with said SINK node, and be used for communicating with said SINK node.
4. vehicle grouping system according to claim 3 is characterized in that, said car-mounted terminal specifically is used for receiving the broadcast that said SINK node sends through the broadcast reception channel;
The corresponding SINK node of group id that said car-mounted terminal specifically is used for storing through interactive channel and said car-mounted terminal communicates;
Wherein, said broadcast reception channel is different with the frequency of said interactive channel.
5. vehicle grouping system according to claim 4; It is characterized in that; The corresponding SINK node of group id that said car-mounted terminal is more concrete is used for storing to said car-mounted terminal through said interactive channel sends information acquisition request, and receives the object information that the corresponding SINK node of group id that said car-mounted terminal stores returns according to the address information of said car-mounted terminal; Said information acquisition request comprises the address information of said car-mounted terminal.
6. vehicular communication system according to claim 5 is characterized in that the address information of said car-mounted terminal comprises vehicles identifications.
7. a vehicle group technology is characterized in that, comprising:
The SINK node sends broadcast, and said broadcast comprises the corresponding group id that divides into groups of said SINK node;
Car-mounted terminal receives said broadcast; Judge according to said car-mounted terminal stored packet mark; Do not divide into groups if judge said car-mounted terminal, judge the signal strength signal intensity of said broadcast, when the signal strength signal intensity of said broadcast during greater than preset first signal strength threshold; Store the group id in the said broadcast, and said grouping mark is set to divides into groups;
The SINK node that said car-mounted terminal is corresponding with the group id that said car-mounted terminal is stored communicates.
8. vehicle group technology according to claim 7 is characterized in that, also comprises:
Divide into groups if judge said car-mounted terminal, said car-mounted terminal judges whether the group id of storing in group id and the said car-mounted terminal in the said broadcast is identical;
If judged result is different; Said car-mounted terminal is judged the signal strength signal intensity of said broadcast; When the signal strength signal intensity of said broadcast during, the group id of storing in the said car-mounted terminal is replaced with the group id in the said broadcast greater than preset secondary signal strength threshold.
9. according to claim 7 or 8 described vehicle group technologies, it is characterized in that said car-mounted terminal receives said broadcast and comprises:
Said car-mounted terminal receives the said broadcast that said SINK node sends through the broadcast reception channel;
The SINK node that said car-mounted terminal is corresponding with the group id that said car-mounted terminal is stored communicates and comprises:
The SINK node that the group id that said car-mounted terminal is stored through interactive channel and said car-mounted terminal is corresponding communicates;
Wherein, said broadcast reception channel is different with the frequency of said interactive channel.
10. vehicle group technology according to claim 9 is characterized in that, the SINK node that the group id that said car-mounted terminal is stored through interactive channel and said car-mounted terminal is corresponding communicates and comprises:
The SINK node that the group id that said car-mounted terminal is stored to said car-mounted terminal through said interactive channel is corresponding sends information acquisition request, receives the object information that the corresponding SINK node of group id that said car-mounted terminal stores returns according to the address information of said car-mounted terminal; Said information acquisition request comprises the address information of said car-mounted terminal.
11. vehicle group technology according to claim 10 is characterized in that the address information of said car-mounted terminal comprises vehicles identifications.
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| CN102385798A (en) * | 2010-08-31 | 2012-03-21 | 西门子公司 | Traffic information collecting method, device and system |
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| CN201479382U (en) * | 2009-06-15 | 2010-05-19 | 北京四维星科技有限责任公司 | All battery powered low-energy consumption self-organization multi-routing wireless sensor network system |
| CN101795292A (en) * | 2010-01-25 | 2010-08-04 | 北京航空航天大学 | Opportunity network architecture based on urban public transport |
| CN102385798A (en) * | 2010-08-31 | 2012-03-21 | 西门子公司 | Traffic information collecting method, device and system |
| CN102333118A (en) * | 2011-10-08 | 2012-01-25 | 常熟理工学院 | Automatic Internet protocol version 6 (IPv6) address configuration method for vehicular network |
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