CN105096659B

CN105096659B - A kind of traffic prewarning method, apparatus and system

Info

Publication number: CN105096659B
Application number: CN201510642383.7A
Authority: CN
Inventors: 张晨璐
Original assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Current assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Priority date: 2015-09-30
Filing date: 2015-09-30
Publication date: 2018-06-15
Anticipated expiration: 2035-09-30
Also published as: WO2017054291A1; CN105096659A

Abstract

The present invention provides a kind of traffic prewarning method, apparatus and system, can second user terminal at least be obtained based on the travel direction of the first user terminal, in this way in the case where needing to send warning information, warning information can be only sent to second user terminal, so that other first user terminals no longer receive warning information, other first user terminals for not receiving warning information can then perform corresponding operation in this way, reduce the probability that other first user terminals perform faulty operation, that is above-mentioned technical proposal provided by the invention targetedly only can send warning information to second user terminal, to reduce the probability that other first user terminals (not by the first user terminal of early warning) perform faulty operation.

Description

A kind of traffic prewarning method, apparatus and system

Technical field

The invention belongs to vehicle network technology field, more specifically, more particularly to a kind of traffic prewarning method, apparatus and being System.

Background technology

Vehicle network technology is following 5G (the 5th third-generation mobile communication technology) network core technology that developed recently gets up, 3GPP (3rd Generation Partnership Project, third generation partner program) is with 2015 to vehicle network technology exhibition Numerous studies work has been opened, and has given the potential technology scene of vehicle network technology.It is proposed in SA technical reports TR22.885 Traffic information broadcasting system based on roadside unit.As shown in Figure 1, under scene shown in Fig. 1, it is desirable that UE (User Equipment, user terminal) actively to the ability of RSU (Road Side Unit, roadside unit) transmission warning information, RSU connects After receiving warning information, early warning broadcast is sent to specific user terminal.

It will be seen from figure 1 that warning information broadcast need not be broadcast to all UE, such as figure is for the lateral vehicle of intersection For A and vehicle B, if the UE on this two vehicles receives warning information and vehicle A and vehicle B execution can be caused to be not necessarily to Faulty operation, therefore existing system needs to accurately identify the ability of vehicle heading.

Invention content

In view of this, the present invention provides a kind of traffic prewarning method, apparatus and system, for targetedly to certain the One user terminal sends warning information, reduces the probability that other first user terminals perform faulty operation.Technical solution is as follows：

In a first aspect, the present invention provides a kind of traffic prewarning method, the method includes：

First user terminal or network side equipment based on currently available multiple time differences with it is last obtain it is multiple when Between it is poor, obtain the travel situations of first user terminal, wherein the time difference for probe message sending time and reception The difference of time；

Travel situations of the network side equipment based on first user terminal judge the row of first user terminal Sail whether situation meets traffic prewarning condition, if so, network side equipment sends warning information to the first roadside unit；

First roadside unit determines to receive the warning information based on the travel situations of first user terminal Second user terminal, and send the warning information to the second user terminal, the warning information is for triggering described the Two user terminals perform operation corresponding with the warning information.

Preferably, the network side equipment includes the second roadside unit and security server；

Second roadside unit obtains the travel situations of first user terminal, based on first user terminal Travel situations, judge whether the travel situations of first user terminal meet traffic prewarning condition, if so, to the first roadside Unit sends warning information；

Or

First user terminal or the second roadside unit obtain the travel situations of first user terminal；

Travel situations of the security server based on first user terminal judge the row of first user terminal Sail whether situation meets traffic prewarning condition, if so, sending warning information to the first roadside unit.

Preferably, second roadside unit or security server are determined based on the travel situations of first user terminal First roadside unit.

Preferably, first user terminal or network side equipment obtain the driving parameters of first user terminal, and The transport condition in the travel situations is obtained based on the driving parameters.

Preferably, first user terminal is based on currently available multiple time differences and last obtained multiple times Difference obtains the travel situations of first user terminal, including：

First user terminal receives the probe message that multiple second roadside unit periodic broadcasts are sent, wherein described The sending time of probe message described in the second roadside unit broadcast transmission is carried in probe message；

First user terminal is after each probe message is received, when obtaining the corresponding reception of each probe message Between, and each receiving time is subjected to mathematic interpolation with corresponding sending time, obtain each receiving time corresponding time difference；

Currently available multiple time differences are compared by first user terminal, obtain first user terminal Relative position；

Currently available each time difference is received same second roadside by first user terminal with the last time respectively The time difference obtained after the probe message of cell broadcast is compared, and obtains the travel direction of first user terminal.

Preferably, the network side equipment is based on currently available multiple time differences and last obtained multiple times Difference obtains the travel situations of first user terminal, including：

Second roadside unit receives the probe message of the first user terminal periodicity sending, wherein being taken in the probe message Sending time with probe message described in the first user terminal broadcast transmission；

Second roadside unit obtains the corresponding receiving time of the probe message after probe message is received；

The receiving time and the sending time are carried out mathematic interpolation and obtain the time difference by second roadside unit, will The time difference is sent to other the second roadside units, and receives other second roadside units and obtained after probe message is received Time difference；

Currently available multiple time differences are compared by second roadside unit, obtain first user terminal Relative position, wherein what currently available multiple time differences obtained including second roadside unit after probe message is received The time difference that time difference and other second roadside units obtain after probe message is received；

Currently available each time difference is received same first user by second roadside unit with the last time respectively The time difference obtained after the probe message of terminal broadcast is compared, and obtains the travel direction of first user terminal.

Second aspect, the present invention provide a kind of traffic prewarning system, including：First user terminal, network side equipment and Two user terminals；

First user terminal or the network side equipment, for based on currently available multiple time differences and last time Obtained multiple time differences obtain the travel situations of first user terminal, wherein the time difference is the hair of probe message Send the difference of time and receiving time；

The network side equipment for the travel situations based on first user terminal, judges that first user is whole Whether the travel situations at end meet traffic prewarning condition, if sending warning information to the first roadside unit；

First roadside unit, for determining that receiving the early warning believes based on the travel situations of first user terminal The second user terminal of breath, and the warning information is sent to the second user terminal, the warning information is used to trigger institute It states second user terminal and performs operation corresponding with the warning information.

Second roadside unit is used to obtain the travel situations of first user terminal, based on first user end The travel situations at end, judge whether the travel situations of first user terminal meet traffic prewarning condition, if so, to first Roadside unit sends warning information；

Or

Second roadside unit, for obtaining the travel situations of first user terminal；

The security server for the travel situations based on first user terminal, judges that first user is whole Whether the travel situations at end meet traffic prewarning condition, if so, sending warning information to the first roadside unit.

Preferably, first roadside unit is determined by the security server or second roadside unit.

Preferably, first user terminal or network side equipment, for obtaining the traveling of first user terminal ginseng Number, and obtain the transport condition in the travel situations based on the driving parameters.

The third aspect, the present invention provide a kind of traffic prewarning method, the method includes：

Currently available multiple time differences are obtained, wherein each time difference is the receiving time and hair of same probe message Send the difference of time；

Based on currently available multiple time differences and last obtained multiple time differences, the row of the first user terminal is obtained Sail situation；

Based on the travel situations of first user terminal, judge whether the travel situations of first user terminal meet Traffic prewarning condition；

When the travel situations of first user terminal meet the traffic prewarning condition, warning information is sent, it is described Warning information performs operation corresponding with the warning information for triggering second user terminal, and the second user terminal is based on The travel situations of first user terminal obtain.

Preferably, the method further includes：The driving parameters of first user terminal are obtained, and are joined based on the traveling Number obtains the transport condition in the travel situations.

Preferably, it is described to obtain currently available multiple time differences, including：

The probe message of the first user terminal periodicity sending is obtained, wherein carrying described first in the probe message The sending time of probe message described in user terminal broadcast transmission；

After probe message is received, the corresponding receiving time of the probe message is obtained；

The receiving time and the sending time are subjected to mathematic interpolation and obtain the time difference, the time difference is sent to Other second roadside units, and receive the time difference of other second roadside units transmission；

Or

It is described to obtain currently available multiple time differences, including：Obtain multiple time differences of the first user terminal uploads, institute State the time difference by the first user terminal receive the second roadside unit periodic broadcast transmission probe message after obtain.

Preferably, it is described based on currently available multiple time differences and last obtained multiple time differences, obtain first The travel situations of user terminal, including：

Currently available multiple time differences are compared, obtain the relative position of the first user terminal；

By currently available each time difference respectively with it is last receive the time difference obtained after same probe message into Row compares, and obtains the travel direction of the first user terminal.

Fourth aspect, the present invention provide a kind of traffic prewarning device, and described device includes：

Obtaining unit, for obtaining currently available multiple time differences, wherein each time difference is same probe message Receiving time and sending time difference；

Computing unit, for based on currently available multiple time differences and last obtained multiple time differences, obtaining the The travel situations of one user terminal；

Judging unit for the travel situations based on first user terminal, judges the row of first user terminal Sail whether situation meets traffic prewarning condition；

Transmitting element, for when the travel situations of first user terminal meet the traffic prewarning condition, sending Warning information, the warning information perform corresponding with warning information operation for triggering second user terminal, and described the Travel situations of two user terminals based on first user terminal obtain.

Preferably, the computing unit, for obtaining the driving parameters of first user terminal, and based on the traveling Parameter obtains the transport condition in the travel situations.

Preferably, the obtaining unit for obtaining the probe message of the first user terminal periodicity sending, is receiving After probe message, the corresponding receiving time of the probe message is obtained, it is poor that the receiving time and the sending time are carried out The time difference is calculated in value, and the time difference is sent to other the second roadside units, and receives other second roadside units hair The time difference sent；The transmission of probe message described in the first user terminal broadcast transmission is carried in wherein described probe message Time；

Or

The obtaining unit, for obtaining multiple time differences of the first user terminal uploads, the time difference is used by first Family terminal obtains after the probe message for receiving the transmission of the second roadside unit periodic broadcast.

Preferably, the computing unit for currently available multiple time differences to be compared, obtains the first user end The relative position at end and for receiving currently available each time difference with the last time respectively after same probe message To time difference be compared, obtain the travel direction of the first user terminal.

Compared with prior art, above-mentioned technical proposal provided by the invention has the following advantages that：

In above-mentioned technical proposal provided by the invention, at least can be obtained based on the travel situations of the first user terminal Warning information in this way in the case where needing to send warning information, can be only sent to second user terminal by two user terminals, So that other first user terminals no longer receive warning information, other do not receive the first user terminal of warning information then in this way Corresponding operation can be performed, reduces the probability that other first user terminals perform faulty operation, that is to say, that the present invention carries The above-mentioned technical proposal of confession targetedly only can send warning information to second user terminal, to reduce other the first use Family terminal (not by the first user terminal of early warning) performs the probability of faulty operation.

Description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention Some embodiments, for those of ordinary skill in the art, without creative efforts, can also basis These attached drawings obtain other attached drawings.

Fig. 1 is the schematic diagram of the existing traffic information broadcasting system based on roadside unit；

Fig. 2 is a kind of flow chart of traffic prewarning method provided in an embodiment of the present invention；

Fig. 3 is a kind of schematic diagram of traffic scene provided in an embodiment of the present invention；

Fig. 4 is the one kind for the travel situations that the first user terminal is obtained in traffic prewarning method provided in an embodiment of the present invention Flow chart；

Fig. 5 be obtained in traffic prewarning method provided in an embodiment of the present invention first user terminal travel situations it is another Kind flow chart；

Fig. 6 is the structure diagram of traffic prewarning system provided in an embodiment of the present invention；

Fig. 7 is the flow chart of another traffic prewarning method provided in an embodiment of the present invention；

Fig. 8 is the structure diagram of traffic prewarning device provided in an embodiment of the present invention.

Specific embodiment

Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art All other embodiments obtained without making creative work shall fall within the protection scope of the present invention.

Referring to Fig. 2, it illustrates the signaling interaction diagram of traffic prewarning method provided in an embodiment of the present invention, can include Following steps：

101：What the first user terminal UE or network side equipment were obtained based on currently available multiple time differences with the last time Multiple time differences obtain the travel situations of the first user terminal, and wherein network side equipment can be RSU, and the time difference disappears for detection The sending time of breath and the difference of receiving time.It is right that the travel situations of first user terminal are used to indicate the first user terminal place As situation driving on the road, such as travel direction and transport condition of the vehicle on road where indicating the first user terminal (in acceleration mode or deceleration regime).

In embodiments of the present invention, the travel situations of the first user terminal include at least the relative position of the first user terminal With the travel direction of the first user terminal, wherein relative position can be based on current obtain by the first user terminal or network side equipment To multiple time differences obtain, travel direction then can be by the first user terminal or network side equipment based on currently available multiple Multiple time differences that time difference obtains with the last time obtain.

That is in embodiments of the present invention, the relative position of the first user terminal and travel direction can be used by first Family terminal itself obtains, can also network side equipment acquisition.That is the first user terminal can be divided into that terminal is active and terminal quilt Ejector half, for the first active user terminal of terminal, the first user terminal can independently obtain the first user terminal Relative position and travel direction or for the first active user terminal of terminal, the first user terminal can from It is main to obtain receiving the probe message corresponding time difference that network side equipment is sent, the time difference for then obtaining the first user terminal Network side equipment is sent to, the relative position of the first user terminal and travel direction are obtained by network side equipment.For terminal For first user terminal of passive-type, the first user terminal can be to network side equipment periodicity sending probe message, by net Network side apparatus obtains the relative position of the first user terminal and travel direction.

In addition to relative position and travel direction, travel situations can also include other information, such as transport condition, the row It sails state and is at least used to indicate the first user terminal and be in acceleration mode or deceleration regime, travel shape in embodiments of the present invention State can be obtained based on the driving parameters of the first user terminal.Wherein driving parameters include at least：Travel speed and acceleration, institute Stating travel speed can be obtained by the velocity sensor being mounted in the first user terminal, and the acceleration then can be by being mounted on Acceleration transducer in first user terminal obtains.It may determine that based on travel speed and acceleration, especially acceleration Object where current first user terminal is in acceleration mode or deceleration regime.Certainly, except travel speed and acceleration are come To except the transport condition of the first user terminal, the brake instruction letter of vehicle where the first user terminal can also be based further on It ceases to obtain, the specific embodiment of the present invention is no longer illustrated.

102：Travel situations of the network side equipment based on the first user terminal, judging the travel situations of the first user terminal is It is no to meet traffic prewarning condition, if so, network side equipment sends warning information to the first roadside unit.

Object where being used to indicate the first user terminal due to the travel situations of the first user terminal is driving on the road Situation, it is possible to which the travel situations based on the first user terminal judge first to determine whether meet traffic prewarning condition Whether object where user terminal is being in illegal running.

Such as the first user terminal place object can obtained just based on the travel direction in travel situations and relative position Whichaway travels, then itself it is possible that the object that can conflict with travel direction collides, therefore based on travel direction and Relative position may determine that whether the travel situations of the first user terminal meet traffic prewarning condition.Application scenarios as shown in Figure 1, The travel situations instruction pedestrian that the first user terminal that pedestrian wears obtains is jaywalking, and traffic information shows pedestrian Be it is illegal run a red light, may collide in this way by the vehicle at crossing where pedestrian with it, then may determine that first at this time The travel situations of user terminal meet traffic prewarning condition.

And in order to improve accuracy of judgement degree, the embodiment of the present invention combines transport condition in travel direction and relative position Object where the first user terminal is assessed how long by crossing, be in acceleration mode or deceleration regime, such network side Equipment then can be based on this to determine whether meeting traffic prewarning condition to send warning information.Network side equipment can also be into one Step combines traffic information to determine whether meeting traffic prewarning condition, such as after the travel situations of the first user terminal are obtained, knot The traffic lights at preceding crossing of being fated is red light green light to determine whether meeting traffic prewarning condition, if right where the first user terminal The relative position instruction vehicle of elephant or pedestrian are in the range of crossing, are in acceleration mode and are moved to crossing direction, and The traffic lights at crossing is red light at present, then illustrates that vehicle or pedestrian will make a dash across the red light and pass through, therefore may determine that satisfaction is handed at this time Logical early-warning conditions send the behavior that warning information is passed through in violation of rules and regulations other vehicles to be indicated to pay attention to.

In embodiments of the present invention, network side equipment includes at least the second roadside unit and security server, the second roadside The course of work of unit and security server can have following several ways, in actual application, can select arbitrary A kind of mode performs：

A kind of mode is the travel situations that the second roadside unit obtains the first user terminal, and judges the first user terminal Whether travel situations meet traffic prewarning condition, if the second roadside unit is determined based on the travel situations of the first user terminal Warning information is sent to the first roadside unit by the first roadside unit；

Another way is：Second roadside unit obtains the travel situations of the first user terminal, and judges the first user end Whether the travel situations at end meet traffic prewarning condition, if so, the travel situations of first user terminal are sent to peace Full server.Security server determines the first roadside unit, and warning information is sent out based on the travel situations of the first user terminal Give the first roadside unit；

Yet another approach is：Second roadside unit obtains the travel situations of the first user terminal, judges the first user terminal Travel situations whether meet traffic prewarning condition, if travel situations of second roadside unit based on the first user terminal are true Fixed first roadside unit, and trigger security server and warning information is sent to the first roadside unit；

Other modes are：The travel situations information needed that second roadside unit will obtain the first user terminal such as receives work( Rate etc. is sent to security server, and the travel situations of the first user terminal are obtained by security server, judge the first user terminal Travel situations whether meet traffic prewarning condition, if security server is determined based on the travel situations of the first user terminal First roadside unit, and warning information is sent to the first roadside unit.

Above-mentioned first roadside unit is for the of accident may to occur with the vehicles or pedestrians of violation to other One user terminal sends the second roadside unit of warning information.In embodiments of the present invention, the mode of the first roadside unit is obtained Can be：Second roadside unit or security server obtain second user terminal according to the relative position of early warning user terminal Position is then based on the location information of each second roadside unit to obtain the second roadside list belonging to second user terminal Member, the second roadside unit belonging to such second user terminal are the first roadside unit.Wherein early warning user terminal is above-mentioned Meet the first user terminal of traffic prewarning condition, the second roadside unit belonging to second user terminal is then range of signal covering Second roadside unit of second user terminal.

When the second roadside unit belonging to second user terminal includes multiple, any one second roadside list can be chosen Member is the first roadside unit；Certainly it is also possible to the second roadside unit for judging to need to send warning information and needs to second The first roadside unit that user terminal sends warning information is same second roadside unit, in this case, if by Security server obtains the first roadside unit, then warning information can be returned to the second roadside unit by security server, if First roadside unit is obtained by the second roadside unit, then can early warning directly be sent to second user terminal from the second roadside unit Information.

103：First roadside unit determines to receive the second user of warning information based on the travel situations of the first user terminal Terminal, and the warning information is sent to second user terminal, warning information is used to trigger the execution of second user terminal and early warning The corresponding operation of information.

In embodiments of the present invention, the first roadside unit can obtain the first user based on relative position and travel direction Which crossing is the probable ranges of terminal be such as located at and the first roadside unit is also based on travel speed and acceleration determines The time and speed of vehicle or pedestrian by crossing where first user terminal, with the first user terminal there is traveling to rush in this way The first prominent user terminal is then second user terminal.As the second roadside unit detects that pedestrian passes through row there are illegal in Fig. 1 For then the first user terminal in vehicle D and vehicle E is second user terminal.The first roadside unit sends out warning information at this time Second user terminal is given, second user terminal can then send out early warning alarm at this time, and making driver, Stop and give way.Wherein early warning is warned Report can shake alarm or other any prompting modes with audible alarm.

From above-mentioned technical proposal it is found that traffic prewarning method provided by the invention can be at least based on the first user terminal Travel situations obtain second user terminal, in this way in the case where needing to send warning information, can only send out warning information It send to second user terminal so that other first user terminals no longer receive warning information, other do not receive early warning letter in this way First user terminal of breath can then perform corresponding operation, reduce other first user terminals and perform the several of faulty operation Rate, that is to say, that above-mentioned technical proposal provided by the invention targetedly only can send early warning letter to second user terminal Breath, to reduce the probability that other first user terminals (not by the first user terminal of early warning) perform faulty operation.

And above-mentioned technical proposal provided by the invention can obtain the relative position of the first user terminal with usage time difference And travel direction, to realize the positioning to the first user terminal, and this mode is relative to GPS positioning (Global Positioning System, global positioning system) it is more simple for technology, and positioning accuracy not by the first user terminal it Between distance influence, so as to improve positioning accuracy, reduce the probability of false triggering.

Below with traffic scene schematic diagram shown in Fig. 3, is based on to above-mentioned first user terminal or network side equipment the time difference The travel situations for obtaining the first user terminal illustrate.Network side equipment is shown in FIG. 3 as four the second roadside units, It is denoted as RSU1, RSU2, RSU3 and RSU4 respectively.First user terminal is illustrated actively to obtain travel situations, flow Figure is as shown in figure 4, may comprise steps of：

201：First user terminal receives the probe message that multiple second roadside unit periodic broadcasts are sent, wherein detecting The sending time of the second roadside unit broadcast transmission probe message is carried in message, sending time indicates that the second roadside unit exists When probe message is sent.In order to accurately obtain relative position and travel direction, multiple second roadsides based on the time difference Sending time in the probe message that cell broadcast is sent needs to synchronize.In embodiments of the present invention, multiple second roadside units Sending time in the probe message of broadcast transmission can be the absolute time based on source at the same time, and GPS such as may be used It is by each the to position the sending time in the probe message of time for using or multiple second roadside unit broadcast transmissions Two roadside units carry out the relative time after clock synchronization process.

202：First user terminal is after each probe message is received, when obtaining the corresponding reception of each probe message Between, and each receiving time is subjected to mathematic interpolation with corresponding sending time, obtain each receiving time corresponding time difference.

By taking Fig. 3 as an example, when the first user terminal obtains the reception of the probe message of RSU1, RSU2, RSU3 and RSU4 transmission Between be：R1, R2, R3 and R4, sending time are：S1, S2, S3 and S4 should be then when calculating the time difference：R_i-S_i, wherein S_i And R_iIt is RSU respectively_iSending time and receiving time, the time difference obtained accordingly is respectively：A1, A2, A3 and A4.

203：Currently available multiple time differences are compared by the first user terminal, obtain the opposite of the first user terminal Position.The method for obtaining location information is the signal difference between more multiple signals.The time difference can be in embodiments of the present invention For reflecting the distance of the time of probe message transmission and transmission, therefore the first use can be obtained by comparing multiple time differences The relative position of family terminal.Still it is not with above-mentioned time difference：For A1, A2, A3 and A4.

If by it was found that：A1>A2 then illustrates the first user terminal close to RSU1 sides, if in A1>The situation of A2 Lower A1>A3 and A1>A4, and A2 and A1 then illustrate the first user terminal close to RSU1 and far from RSU3 much larger than A3 and A4 With RSU4 sides, therefore after multiple time differences are compared then can obtain the first user terminal relative position.

204：Currently available each time difference is received same second roadside by the first user terminal with the last time respectively The time difference obtained after the probe message of cell broadcast is compared, and obtains the travel direction of the first user terminal.That is First user terminal judges according to the variation tendency for connecing probe message time difference in multiple measurement process that multiple RSU are sent UE closer or far from each RSU position, so as to judge travel direction.And need to pay attention to any is：It is sent to multiple RSU The variation tendency of time difference that is obtained in multiple measure of probe message when being compared, be by same second roadside unit Sending time and receiving time be compared.

Be respectively A1 ', A2 ', A3 ', A4 ' in the upper time difference once obtained still by taking Fig. 3 as an example, with it is currently available when Between difference A1, A2, A3, A4 compare, work as A1 '>A1、A2’>A2、A3’>A3 and A4 '>A4, then may determine that the first user terminal be to Close to the movement of RSU1 general orientation, and move closer to the direction of RSU3 and RSU4.Certainly, if it find that A1 '<A1, A2 '<A2 but A3 ' >A3、A4’>A4 it can be said that bright first user terminal is towards RSU3 and RSU4, but has travelled RSU1 and RSU2 separate Position, may determine that the general travel direction of the first user terminal in this way, and can indicate the first use Family terminal is that crossing is sailed or sailed out of to crossing.

As shown in figure 5, when being the second roadside unit it illustrates network side equipment, the second roadside unit obtains the first user The relative position of terminal and the flow of travel direction, may comprise steps of：

301：Second roadside unit receives the probe message of the first user terminal periodicity sending, is wherein taken in probe message Sending time with the first user terminal broadcast transmission probe message.

302：Second roadside unit obtains the corresponding receiving time of probe message after probe message is received.

303：Receiving time and sending time are carried out mathematic interpolation and obtain the time difference by the second roadside unit, will be sent out the time difference It send to other the second roadside units, and receives the time difference that other second roadside units obtain after probe message is received, this The second roadside unit of sample can obtain time difference of same first user terminal in different second roadside units so that second Roadside unit can be compared to obtain the opposite of the first user terminal to multiple time differences of same first user terminal Position and travel direction.

304：Currently available multiple time differences are compared by the second roadside unit, obtain the opposite of the first user terminal Position, wherein currently available multiple time differences include time difference for being obtained after probe message is received of the second roadside unit with And the time difference that other second roadside units obtain after probe message is received.

305：Currently available each time difference is received same first user by the second roadside unit with the last time respectively The time difference obtained after the probe message of terminal broadcast is compared, and obtains the travel direction of the first user terminal.

In embodiments of the present invention, the second roadside unit obtains the mode of relative position and travel direction and above-mentioned Fig. 4 institutes Show that corresponding step is identical in flow chart, no longer illustrates this embodiment of the present invention.

Corresponding with embodiment of the method shown in above-mentioned Fig. 1, the embodiment of the present invention also provides a kind of traffic prewarning system, such as schemes Shown in 6, it can include：First user terminal 11, network side equipment 12, the first roadside unit 13 and second user terminal 14.

Wherein, the first user terminal 11 or network side equipment 12, for based on currently available multiple time differences and upper one Secondary obtained multiple time differences obtain the travel situations of the first user terminal, and the wherein time difference is the sending time of probe message With the difference of receiving time.Object is in road uplink where the travel situations of first user terminal are used to indicate the first user terminal Situation about sailing, such as indicate travel direction and transport condition of the first user terminal place vehicle on road (in acceleration shape State or deceleration regime).

In embodiments of the present invention, the travel situations of the first user terminal include at least the relative position of the first user terminal With the travel direction of the first user terminal, wherein relative position can be based on current obtain by the first user terminal or network side equipment To multiple time differences obtain, travel direction then can be by the first user terminal or network side equipment based on currently available multiple Multiple time differences that time difference obtains with the last time obtain, and can specifically refer to flow chart shown in above-mentioned Fig. 4 and Fig. 5.

Network side equipment 12 for the travel situations based on the first user terminal, judges the traveling feelings of the first user terminal Whether condition meets traffic prewarning condition, if sending warning information to the first roadside unit.Due to the row of the first user terminal The situation of sailing is used to indicate the first user terminal place object situation driving on the road, it is possible to based on the first user terminal Travel situations to determine whether meet traffic prewarning condition, that is, judge whether object where the first user terminal be in separated In method traveling.

First roadside unit 13, for determining that receive warning information second uses based on the travel situations of the first user terminal Family terminal, and warning information is sent to second user terminal, wherein warning information for trigger second user terminal perform with it is pre- The corresponding operation of police's information.In embodiments of the present invention, the first roadside unit can based on relative position and travel direction come To the probable ranges of the first user terminal, be such as located at which crossing and the first roadside unit be also based on travel speed and Acceleration determines the time and speed of vehicle or pedestrian where the first user terminal by crossing, in this way with the first user terminal The first user terminal with traveling conflict is then second user terminal.As the second roadside unit detects that pedestrian exists in Fig. 1 Illegal crossing behavior, then the first user terminal in vehicle D and vehicle E is second user terminal.The first roadside unit will at this time Warning information is sent to second user terminal, and second user terminal can then send out early warning alarm at this time, and making driver, Stop and give way. Wherein early warning alarm can shake alarm or other any prompting modes with audible alarm.

From above-mentioned technical proposal it is found that traffic prewarning system provided by the invention can be at least based on the first user terminal Travel situations obtain second user terminal, in this way in the case where needing to send warning information, can only send out warning information It send to second user terminal so that other first user terminals no longer receive warning information, other do not receive early warning letter in this way First user terminal of breath can then perform corresponding operation, reduce other first user terminals and perform the several of faulty operation Rate, that is to say, that above-mentioned technical proposal provided by the invention targetedly only can send early warning letter to second user terminal Breath, to reduce the probability that other first user terminals (not by the first user terminal of early warning) perform faulty operation.

And above-mentioned technical proposal provided by the invention can obtain the relative position of the first user terminal with usage time difference And travel direction, to realize the positioning to the first user terminal, and this mode is more simple for GPS positioning technology It is single, and distance is not influenced positioning accuracy between by the first user terminal, so as to improve positioning accuracy, reduces the several of false triggering Rate.

Referring to Fig. 7, it illustrates the flow chart of another traffic prewarning method provided in an embodiment of the present invention, can wrap Include following steps：

701：Currently available multiple time differences are obtained, wherein each time difference is the receiving time of same probe message With the difference of sending time.In embodiments of the present invention, probe message can be sent by the second roadside unit periodic broadcast, and Sending time is carried in probe message to indicate that the second roadside unit sends the time of probe message.

After the first user terminal receives probe message, the corresponding receiving time of probe message is obtained, when calculating reception Between difference between sending time obtain the time difference, then the first user terminal can be uploaded to the after the time difference is obtained Two roadside units.

Certain probe message can also be sent, and transmission is carried in probe message by the first user terminal periodic broadcast Time with indicate the first user terminal send probe message time.Second roadside unit obtains after probe message is received The corresponding receiving time of probe message；Receiving time and the sending time are subjected to mathematic interpolation and obtain the time difference, by the time Difference is sent to other the second roadside units, and receives the time that other second roadside units obtain after probe message is received Difference, such second roadside unit can obtain time difference of same first user terminal in different second roadside units.

702：Based on currently available multiple time differences and last obtained multiple time differences, the first user terminal is obtained Travel situations.In embodiments of the present invention, it is right to be used to indicate the first user terminal place for the travel situations of the first user terminal As situation driving on the road, such as travel direction and transport condition of the vehicle on road where indicating the first user terminal (in acceleration mode or deceleration regime).Wherein, the travel situations of the first user terminal include at least the first user terminal The travel direction of relative position and the first user terminal, relative position can be based on working as by the first user terminal or network side equipment Before obtained multiple time differences obtain, travel direction then can be by the first user terminal or network side equipment based on currently available Multiple time differences that multiple time differences obtain with the last time obtain, and can specifically refer to flow chart shown in above-mentioned Fig. 4 and Fig. 5, this Inventive embodiments no longer illustrate.

703：Based on the travel situations of the first user terminal, judge whether the travel situations of the first user terminal meet traffic Early-warning conditions.Object where being used to indicate the first user terminal due to the travel situations of the first user terminal is driving on the road Situation, it is possible to which the travel situations based on the first user terminal judge first to determine whether meet traffic prewarning condition Whether object where user terminal is being in illegal running.

704：When the travel situations of the first user terminal meet traffic prewarning condition, warning information, warning information are sent Operation corresponding with warning information is performed, and second user terminal is based on the first user terminal for triggering second user terminal Travel situations obtain.

Corresponding with embodiment of the method shown in above-mentioned Fig. 7, the embodiment of the present invention also provides a kind of traffic prewarning device, knot Structure schematic diagram is as shown in figure 8, can include：Obtaining unit 20, computing unit 21, judging unit 22 and transmitting element 23.

Obtaining unit 20 for obtaining currently available multiple time differences, disappears wherein each time difference is same detection The receiving time of breath and the difference of sending time.In embodiments of the present invention, probe message can be by the second roadside unit period Property broadcast transmission, and carried in probe message sending time with indicate the second roadside unit send probe message time.When After first user terminal receives probe message, the corresponding receiving time of probe message is obtained, then calculates receiving time and hair The difference between the time is sent to obtain the time difference.First user terminal can be uploaded to the second roadside unit after the time difference is obtained Obtaining unit 20.

Certain probe message can also be sent, and transmission is carried in probe message by the first user terminal periodic broadcast Time with indicate the first user terminal send probe message time.Obtaining unit 20 is visited after probe message is received Survey the corresponding receiving time of message；Receiving time and the sending time are subjected to mathematic interpolation and obtain the time difference, by the time difference Other the second roadside units are sent to, and receive the time difference that other second roadside units obtain after probe message is received, It is achieved in that unit 20 can obtain time difference of same first user terminal in different second roadside units.

Computing unit 21, for based on currently available multiple time differences and last obtained multiple time differences, obtaining The travel situations of first user terminal.In embodiments of the present invention, travel situations include at least the opposite position of the first user terminal The travel direction with the first user terminal is put, wherein relative position is obtained by computing unit 21 based on currently available multiple time differences It arrives, travel direction then can be by computing unit 21 based on currently available multiple time differences and last obtained multiple time differences It obtains, can specifically refer to flow chart shown in above-mentioned Fig. 5.

In addition to relative position and travel direction, travel situations can also include other information, such as transport condition, the row It sails state and is at least used to indicate the first user terminal and be in acceleration mode or deceleration regime, travel shape in embodiments of the present invention State can be obtained with driving parameters of the computing unit 21 based on the first user terminal.Wherein driving parameters include at least：Travel speed And acceleration, the travel speed can be obtained by the velocity sensor being mounted in the first user terminal, the acceleration is then It can be obtained by the acceleration transducer being mounted in the first user terminal.Based on travel speed and acceleration, especially accelerate Degree may determine that object where current first user terminal is in acceleration mode or deceleration regime.Certainly, except travel speed It is obtained except the transport condition of the first user terminal with acceleration, vehicle where the first user terminal can also be based further on Brake instruction information obtain, the specific embodiment of the present invention is no longer illustrated.

Judging unit 22 for the travel situations based on the first user terminal, judges the travel situations of the first user terminal Whether traffic prewarning condition is met.Object where being used to indicate the first user terminal due to the travel situations of the first user terminal exists Situation about being travelled on road, it is possible to which the travel situations based on the first user terminal are to determine whether meet traffic prewarning item Part, that is, judge whether object where the first user terminal is being in illegal running, and specific deterministic process can refer to above-mentioned The related description of embodiment of the method no longer illustrates this embodiment of the present invention.

Transmitting element 23, for when the travel situations of the first user terminal meet traffic prewarning condition, sending early warning letter Breath, warning information perform operation corresponding with warning information for triggering second user terminal, and second user terminal is based on first The travel situations of user terminal obtain.Wherein second user terminal for may with have that traveling conflicts with the first user terminal the One user terminal, if the second roadside unit detects pedestrian there are illegal crossing behavior in above-mentioned Fig. 1, then in vehicle D and vehicle E The first user terminal be second user terminal.Second user terminal can then send out early warning alarm at this time, and driver's parking is made to allow Row.Wherein early warning alarm can shake alarm or other any prompting modes with audible alarm.

Explanation is needed herein a bit：D2D discovery (terminal direct connections may be used in probe message in above-described embodiment Detection) message in technology, such as D2D discovery message (D2D probe messages) or D2D communication Message (D2D communication informations), same first user terminal can also be carried to the various information that the second roadside unit uploads With being uploaded in feedback message, wherein feedback message can also use the message in D2D discovery technologies, such as D2D Discovery message or D2D communication message.

Each embodiment in this specification is described by the way of progressive, the highlights of each of the examples are with The difference of other embodiment, just to refer each other for identical similar part between each embodiment.Device class is implemented For example, since it is basicly similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method Part illustrates.

Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation Between there are any actual relationship or orders.Moreover, term " comprising ", "comprising" or its any other variant meaning Covering non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only include that A little elements, but also including other elements that are not explicitly listed or further include for this process, method, article or The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged Except also there are other identical elements in the process, method, article or apparatus that includes the element.

The foregoing description of the disclosed embodiments enables those skilled in the art to realize or use the present invention.To this A variety of modifications of a little embodiments will be apparent for a person skilled in the art, and the general principles defined herein can Without departing from the spirit or scope of the present invention, to realize in other embodiments.Therefore, the present invention will not be limited The embodiments shown herein is formed on, and is to fit to consistent with the principles and novel features disclosed herein most wide Range.

The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims

A kind of 1. traffic prewarning method, which is characterized in that the method includes：

Multiple time differences that first user terminal or network side equipment are obtained based on currently available multiple time differences with the last time, The travel situations of first user terminal are obtained, wherein the time difference is the sending time and receiving time of probe message Difference；

Wherein, the relative position of travel situations of first user terminal including first user terminal, travel direction and Transport condition；The relative position and travel direction of first user terminal are used to indicate which first user terminal is located at Crossing and the travel direction at the crossing, with reference to described in the relative position and travel direction of first user terminal How long the transport condition of first user terminal is used to indicate first user terminal by the crossing；

Travel situations of the network side equipment based on first user terminal judge the traveling feelings of first user terminal Whether condition meets traffic prewarning condition, if so, network side equipment sends warning information to the first roadside unit；

First roadside unit determines to receive the second of the warning information based on the travel situations of first user terminal User terminal, and the warning information is sent to the second user terminal, the warning information is used for triggering described second Family terminal performs operation corresponding with the warning information；The second user terminal is first with meeting traffic prewarning condition There is the first user terminal of traveling conflict in user terminal.
2. according to the method described in claim 1, it is characterized in that, the network side equipment includes the second roadside unit and safety Server；

Second roadside unit obtains the travel situations of first user terminal, the traveling based on first user terminal Situation, judges whether the travel situations of first user terminal meet traffic prewarning condition, if so, to the first roadside unit Send warning information；

Or

First user terminal or the second roadside unit obtain the travel situations of first user terminal；

Travel situations of the security server based on first user terminal judge the traveling feelings of first user terminal Whether condition meets traffic prewarning condition, if so, sending warning information to the first roadside unit.
3. according to the method described in claim 1, it is characterized in that, described in first user terminal or network side equipment acquisition The driving parameters of first user terminal, and obtain the transport condition in the travel situations based on the driving parameters.
4. according to the method described in claim 1, it is characterized in that, first user terminal based on it is currently available multiple when Between difference and last obtained multiple time differences, obtain the travel situations of first user terminal, including：

First user terminal receives the probe message that multiple second roadside unit periodic broadcasts are sent, wherein the detection The sending time of probe message described in the second roadside unit broadcast transmission is carried in message；

First user terminal obtains the corresponding receiving time of each probe message after each probe message is received, and Each receiving time is subjected to mathematic interpolation with corresponding sending time, obtains each receiving time corresponding time difference；

Currently available multiple time differences are compared by first user terminal, obtain the opposite of first user terminal Position；

Currently available each time difference is received same second roadside unit by first user terminal with the last time respectively The time difference obtained after the probe message of broadcast is compared, and obtains the travel direction of first user terminal.
5. according to the method described in claim 1, it is characterized in that, the network side equipment is based on currently available multiple times Difference and last obtained multiple time differences, the travel situations of first user terminal are obtained, including：

Second roadside unit receives the probe message of the first user terminal periodicity sending, wherein being carried in the probe message The sending time of probe message described in the first user terminal broadcast transmission；

Second roadside unit obtains the corresponding receiving time of the probe message after probe message is received；

The receiving time and the sending time are carried out mathematic interpolation and obtain the time difference by second roadside unit, by described in Time difference is sent to other the second roadside units, and receive other second roadside units obtained after receiving probe message when Between it is poor；

Currently available multiple time differences are compared by second roadside unit, obtain the opposite of first user terminal Position, wherein the time that currently available multiple time differences obtain including second roadside unit after probe message is received The time difference that difference and other second roadside units obtain after probe message is received；

Currently available each time difference is received same first user terminal by second roadside unit with the last time respectively The time difference obtained after the probe message of broadcast is compared, and obtains the travel direction of first user terminal.
6. a kind of traffic prewarning system, which is characterized in that including：First user terminal, network side equipment and second user terminal；

First user terminal or the network side equipment, for being obtained based on currently available multiple time differences with the last time Multiple time differences, obtain the travel situations of first user terminal, wherein the time difference be probe message transmission when Between and receiving time difference；

Wherein, the relative position of travel situations of first user terminal including first user terminal, travel direction and Transport condition；The relative position and travel direction of first user terminal are used to indicate which first user terminal is located at Crossing and the travel direction at the crossing, with reference to described in the relative position and travel direction of first user terminal How long the transport condition of first user terminal is used to indicate first user terminal by the crossing；

The network side equipment for the travel situations based on first user terminal, judges first user terminal Whether travel situations meet traffic prewarning condition, if sending warning information to the first roadside unit；

First roadside unit, for determining to receive the warning information based on the travel situations of first user terminal Second user terminal, and send the warning information to the second user terminal, the warning information is for triggering described the Two user terminals perform operation corresponding with the warning information；The second user terminal is with meeting traffic prewarning condition There is the first user terminal of traveling conflict in the first user terminal.
7. system according to claim 6, which is characterized in that the network side equipment includes the second roadside unit and safety Server；

Second roadside unit is used to obtain the travel situations of first user terminal, based on first user terminal Travel situations, judge whether the travel situations of first user terminal meet traffic prewarning condition, if so, to the first roadside Unit sends warning information；

Or

Second roadside unit, for obtaining the travel situations of first user terminal；

The security server for the travel situations based on first user terminal, judges first user terminal Whether travel situations meet traffic prewarning condition, if so, sending warning information to the first roadside unit.
8. system according to claim 6, which is characterized in that first user terminal or network side equipment, for obtaining The driving parameters of first user terminal are obtained, and the transport condition in the travel situations is obtained based on the driving parameters.
A kind of 9. traffic prewarning method, which is characterized in that the method includes：

Currently available multiple time differences are obtained, wherein when each time difference is receiving time and the transmission of same probe message Between difference；

Based on currently available multiple time differences and last obtained multiple time differences, the traveling feelings of the first user terminal are obtained Condition；

Wherein, the relative position of travel situations of first user terminal including first user terminal, travel direction and Transport condition；The relative position and travel direction of first user terminal are used to indicate which first user terminal is located at Crossing and the travel direction at the crossing, with reference to described in the relative position and travel direction of first user terminal How long the transport condition of first user terminal is used to indicate first user terminal by the crossing；

Based on the travel situations of first user terminal, judge whether the travel situations of first user terminal meet traffic Early-warning conditions；

When the travel situations of first user terminal meet the traffic prewarning condition, warning information, the early warning are sent Information performs operation corresponding with the warning information for triggering second user terminal, and the second user terminal is based on described The travel situations of first user terminal obtain；The second user terminal is the first user terminal with meeting traffic prewarning condition In the presence of the first user terminal of traveling conflict.
10. according to the method described in claim 9, it is characterized in that, the method further includes：Obtain first user terminal Driving parameters, and obtain the transport condition in the travel situations based on the driving parameters.
11. according to the method described in claim 9, it is characterized in that, described obtain currently available multiple time differences, including：

The probe message of the first user terminal periodicity sending is obtained, wherein carrying first user in the probe message Terminal broadcast sends the sending time of the probe message；

After probe message is received, the corresponding receiving time of the probe message is obtained；

The receiving time and the sending time are subjected to mathematic interpolation and obtain the time difference, the time difference is sent to other Second roadside unit, and receive the time difference of other second roadside units transmission；

Or

It is described to obtain currently available multiple time differences, including：Multiple time differences of the first user terminal uploads are obtained, when described Between difference by the first user terminal receive the second roadside unit periodic broadcast transmission probe message after obtain.
12. according to the method for claim 11, which is characterized in that described based on currently available multiple time differences and upper one Secondary obtained multiple time differences, the travel situations of the first user terminal are obtained, including：

Currently available multiple time differences are compared, obtain the relative position of the first user terminal；

Time difference of the currently available each time difference respectively with being obtained after the last same probe message of reception is compared Compared with obtaining the travel direction of the first user terminal.
13. a kind of traffic prewarning device, which is characterized in that described device includes：

Obtaining unit, for obtaining currently available multiple time differences, wherein each time difference is connecing for same probe message Between time receiving and the difference of sending time；

Computing unit, for based on currently available multiple time differences and last obtained multiple time differences, obtaining the first use The travel situations of family terminal；

Wherein, the relative position of travel situations of first user terminal including first user terminal, travel direction and Transport condition；The relative position and travel direction of first user terminal are used to indicate which first user terminal is located at Crossing and the travel direction at the crossing, with reference to described in the relative position and travel direction of first user terminal How long the transport condition of first user terminal is used to indicate first user terminal by the crossing；

Judging unit for the travel situations based on first user terminal, judges the traveling feelings of first user terminal Whether condition meets traffic prewarning condition；

Transmitting element, for when the travel situations of first user terminal meet the traffic prewarning condition, sending early warning Information, the warning information perform operation corresponding with the warning information for triggering second user terminal, and described second uses Travel situations of the family terminal based on first user terminal obtain；The second user terminal is with meeting traffic prewarning condition The first user terminal exist traveling conflict the first user terminal.
14. device according to claim 13, which is characterized in that the computing unit, for obtaining first user The driving parameters of terminal, and obtain the transport condition in the travel situations based on the driving parameters.
15. device according to claim 13, which is characterized in that the obtaining unit, for obtaining the first user terminal The probe message of periodicity sending after probe message is received, obtains the corresponding receiving time of the probe message, by described in Receiving time and the sending time carry out mathematic interpolation and obtain the time difference, and the time difference is sent to other second roadsides list Member, and receive the time difference of other second roadside units transmission；It is whole that first user is carried in wherein described probe message Hold the sending time of probe message described in broadcast transmission；

Or

The obtaining unit, for obtaining multiple time differences of the first user terminal uploads, the time difference is by the first user end It holds and is obtained after the probe message for receiving the transmission of the second roadside unit periodic broadcast.
16. device according to claim 15, which is characterized in that the computing unit, for will be currently available multiple Time difference is compared, and obtains the relative position of the first user terminal and for currently available each time difference to be distinguished Time difference with being obtained after the last same probe message of reception is compared, and obtains the travel direction of the first user terminal.