CN105096659A

CN105096659A - Traffic early-warning method, device and system

Info

Publication number: CN105096659A
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: 2015-11-25
Anticipated expiration: 2035-09-30
Also published as: WO2017054291A1; CN105096659B

Abstract

The invention provides a traffic early-warning method, device and system. A second user terminal can be obtained at least based on the driving direction of a first user terminal, and pre-warning information can be sent to the second user terminal in the situation that pre-warning information is required to be sent to enable the other first user terminals not to receive pre-warning information any more, so that the other first user terminals which do not receive the pre-warning information can implement corresponding operations, and the probability of faulty operation implemented by the other first user terminals is reduced; that is to say, through the adoption of the technical scheme provided by the invention, the pre-warning information is only sent to the second user terminal in a targeted manner, so that the probability of faulty operation implemented by the other first user terminals (the first user terminals which do not receive the pre-warning information) is reduced.

Description

A kind of traffic prewarning method, Apparatus and system

Technical field

The invention belongs to vehicle network technology field, in particular, particularly relate to a kind of traffic prewarning method, Apparatus and system.

Background technology

Vehicle network technology is following 5G (the 5th third-generation mobile communication technology) the network core technology that developed recently gets up, 3GPP (3rdGenerationPartnershipProject, third generation partner program) and a large amount of research work was expanded to vehicle network technology in 2015, and give the potential technology scene of vehicle network technology.The traffic information broadcasting system based on roadside unit is proposed in SA technical report TR22.885.As shown in Figure 1, under scene shown in Fig. 1, require UE (UserEquipment, user terminal) initiatively to RSU (RoadSideUnit, roadside unit) send the ability of early warning information, after RSU receives early warning information, send early warning broadcast to specific user terminal.

As can be seen from Figure 1, early warning information broadcast is without the need to being broadcast to all UE, if figure is for the lateral vehicle A of intersection and vehicle B, if the early warning information that receives the UE on this two vehicles can cause vehicle A and vehicle B to perform the faulty operation that there is no need, therefore existing system needs the ability accurately identifying vehicle heading.

Summary of the invention

In view of this, the invention provides a kind of traffic prewarning method, Apparatus and system, for sending early warning information to some first user terminal targetedly, reducing the probability of other first user terminal execution errors operation.Technical scheme is as follows:

First aspect, the invention provides a kind of traffic prewarning method, described method comprises:

First user terminal or network equipment are based on the current multiple mistiming obtained and the last multiple mistimings obtained, and obtain the travel situations of described first user terminal, the wherein said mistiming is the transmitting time of probe message and the difference of time of reception;

Described network equipment, based on the travel situations of described first user terminal, judges whether the travel situations of described first user terminal meets traffic prewarning condition, and if so, network equipment sends early warning information to first via edge element;

Described first via edge element determines based on the travel situations of described first user terminal the second user terminal receiving described early warning information, and sending described early warning information to described second user terminal, described early warning information performs the operation corresponding with described early warning information for triggering described second user terminal.

Preferably, described network equipment comprises the second roadside unit and security server;

Described second roadside unit obtains the travel situations of described first user terminal, based on the travel situations of described first user terminal, judge whether the travel situations of described first user terminal meets traffic prewarning condition, if so, send early warning information to first via edge element;

Or

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

Described security server, based on the travel situations of described first user terminal, judges whether the travel situations of described first user terminal meets traffic prewarning condition, if so, sends early warning information to first via edge element.

Preferably, described second roadside unit or security server determine described first via edge element based on the travel situations of described first user terminal.

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

Preferably, described first user terminal, based on the current multiple mistiming obtained and the last multiple mistimings obtained, obtains the travel situations of described first user terminal, comprising:

Described first user terminal receives the probe message that multiple second roadside unit periodic broadcast sends, and carries the transmitting time of probe message described in described second roadside unit broadcast transmission in wherein said probe message;

Described first user terminal, after receiving each probe message, obtains the time of reception that each probe message is corresponding, and each time of reception is carried out mathematic interpolation with corresponding transmitting time, obtains the mistiming that each time of reception is corresponding;

The current multiple mistimings obtained compare by described first user terminal, obtain the relative position of described first user terminal;

The mistiming that described first user terminal obtains is received the probe message that same second roadside unit broadcasts the current each mistiming obtained respectively with the last time after compares, and obtains the travel direction of described first user terminal.

Preferably, described network equipment, based on the current multiple mistiming obtained and the last multiple mistimings obtained, obtains the travel situations of described first user terminal, comprising:

Second roadside unit receives the probe message that first user terminal periodic sends, and carries the transmitting time that described first user terminal broadcast sends described probe message in wherein said probe message;

Described second roadside unit, after receiving probe message, obtains the time of reception that described probe message is corresponding;

Described time of reception and described transmitting time are carried out mathematic interpolation and obtain the mistiming by described second roadside unit, are sent to other second roadside units the described mistiming, and receive the mistiming that other second roadside units obtain after receiving probe message;

The current multiple mistimings obtained compare by described second roadside unit, obtain the relative position of described first user terminal, wherein the current multiple mistimings obtained comprise mistiming that described second roadside unit obtains after receiving probe message and the mistiming that other the second roadside units obtain after receiving probe message;

The mistiming that described second roadside unit obtains the current each mistiming obtained is received the probe message of same first user terminal broadcast respectively with the last time after compares, and obtains the travel direction of described first user terminal.

Second aspect, the invention provides a kind of traffic prewarning system, comprising: first user terminal, network equipment and the second user terminal;

Described first user terminal or described network equipment, for the multiple mistimings obtained based on the current multiple mistiming obtained and last time, obtain the travel situations of described first user terminal, the wherein said mistiming is the transmitting time of probe message and the difference of time of reception;

Described network equipment, for the travel situations based on described first user terminal, judges whether the travel situations of described first user terminal meets traffic prewarning condition, if send early warning information to first via edge element;

Described first via edge element, for determining based on the travel situations of described first user terminal the second user terminal receiving described early warning information, and sending described early warning information to described second user terminal, described early warning information performs the operation corresponding with described early warning information for triggering described second user terminal.

Described second roadside unit is for obtaining the travel situations of described first user terminal, based on the travel situations of described first user terminal, judge whether the travel situations of described first user terminal meets traffic prewarning condition, if so, send early warning information to first via edge element;

Or

Described second roadside unit, for obtaining the travel situations of described first user terminal;

Described security server, for the travel situations based on described first user terminal, judges whether the travel situations of described first user terminal meets traffic prewarning condition, if so, sends early warning information to first via edge element.

Preferably, described first via edge element is determined by described security server or described second roadside unit.

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

The third aspect, the invention provides a kind of traffic prewarning method, described method comprises:

Obtain the current multiple mistimings obtained, wherein each mistiming is the time of reception of same probe message and the difference of transmitting time;

Based on the current multiple mistiming obtained and the last multiple mistimings obtained, obtain the travel situations of first user terminal;

Based on the travel situations of described first user terminal, judge whether the travel situations of described first user terminal meets traffic prewarning condition;

When the travel situations of described first user terminal meets described traffic prewarning condition, send early warning information, described early warning information performs the operation corresponding with described early warning information for triggering the second user terminal, and described second user terminal obtains based on the travel situations of described first user terminal.

Preferably, described method also comprises: the driving parameters obtaining described first user terminal, and obtains the transport condition in described travel situations based on described driving parameters.

Preferably, the described acquisition current multiple mistimings obtained, comprising:

Obtain the probe message that first user terminal periodic sends, in wherein said probe message, carry the transmitting time that described first user terminal broadcast sends described probe message;

After receiving probe message, obtain the time of reception that described probe message is corresponding;

Described time of reception and described transmitting time are carried out mathematic interpolation and obtains the mistiming, is sent to other second roadside units the described mistiming, and receive the mistiming of other second roadside units transmission;

Or

The described acquisition current multiple mistimings obtained, comprising: obtain multiple mistimings that first user terminal is uploaded, the described mistiming is obtained after the probe message receiving the second roadside unit periodic broadcast transmission by first user terminal.

Preferably, described based on the current multiple mistiming obtained and the last multiple mistimings obtained, obtain the travel situations of first user terminal, comprising:

The current multiple mistimings obtained are compared, obtains the relative position of first user terminal;

The mistiming obtained after the current each mistiming obtained is received same probe message with the last time respectively compares, and obtains the travel direction of first user terminal.

Fourth aspect, the invention provides a kind of traffic prewarning device, described device comprises:

Obtain unit, for obtaining the current multiple mistimings obtained, wherein each mistiming is the time of reception of same probe message and the difference of transmitting time;

Computing unit, for based on the current multiple mistiming obtained and the last multiple mistimings obtained, obtains the travel situations of first user terminal;

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

Transmitting element, for when the travel situations of described first user terminal meets described traffic prewarning condition, send early warning information, described early warning information performs the operation corresponding with described early warning information for triggering the second user terminal, and described second user terminal obtains based on the travel situations of described first user terminal.

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

Preferably, described acquisition unit, for obtaining the probe message that first user terminal periodic sends, after receiving probe message, obtain the time of reception that described probe message is corresponding, described time of reception and described transmitting time are carried out mathematic interpolation and obtains the mistiming, is sent to other second roadside units the described mistiming, and receive the mistiming of other second roadside units transmission; The transmitting time that described first user terminal broadcast sends described probe message is carried in wherein said probe message;

Or

Described acquisition unit, for obtaining multiple mistimings that first user terminal is uploaded, the described mistiming is obtained after the probe message receiving the second roadside unit periodic broadcast transmission by first user terminal.

Preferably, described computing unit, for the current multiple mistimings obtained are compared, obtain the relative position of first user terminal, and compare for the mistiming obtained after the current each mistiming obtained is received same probe message with the last time respectively, obtain the travel direction of first user terminal.

Compared with prior art, technique scheme tool provided by the invention has the following advantages:

In technique scheme provided by the invention, at least can obtain the second user terminal based on the travel situations of first user terminal, like this when needs send early warning information, early warning information only can be sent to the second user terminal, other first user terminals are made no longer to receive early warning information, other first user terminals not receiving early warning information then can perform corresponding operation like this, reduce the probability of other first user terminal execution errors operation, that is technique scheme provided by the invention only can send early warning information to the second user terminal targetedly, to reduce the probability of other first user terminals (not by the first user terminal of early warning) execution error operation.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

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

Fig. 2 is a kind of process flow diagram of the traffic prewarning method that the embodiment of the present invention provides;

Fig. 3 is the schematic diagram of a kind of traffic scene that the embodiment of the present invention provides;

Fig. 4 is a kind of process flow diagram obtaining the travel situations of first user terminal in the traffic prewarning method that provides of the embodiment of the present invention;

Fig. 5 is the another kind of process flow diagram obtaining the travel situations of first user terminal in the traffic prewarning method that provides of the embodiment of the present invention;

Fig. 6 is the structural representation of the traffic prewarning system that the embodiment of the present invention provides;

Fig. 7 is the process flow diagram of the another kind of traffic prewarning method that the embodiment of the present invention provides;

Fig. 8 is the structural representation of the traffic prewarning device that the embodiment of the present invention provides.

Embodiment

For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

Refer to Fig. 2, it illustrates the Signalling exchange figure of the traffic prewarning method that the embodiment of the present invention provides, can comprise the following steps:

101: first user terminal UE or network equipment are based on the current multiple mistiming obtained and the last multiple mistimings obtained, obtain the travel situations of first user terminal, wherein network equipment can be RSU, and the mistiming is the transmitting time of probe message and the difference of time of reception.The travel situations of first user terminal is used to indicate the situation that first user terminal place object travels on road, such as, indicate the travel direction of first user terminal place vehicle on road and transport condition (being in acceleration mode or deceleration regime).

In embodiments of the present invention, the travel situations of first user terminal at least comprises the relative position of first user terminal and the travel direction of first user terminal, wherein relative position can be obtained based on the current multiple mistimings obtained by first user terminal or network equipment, and travel direction then can be obtained based on the current multiple mistiming obtained and the last multiple mistimings obtained by first user terminal or network equipment.

That is in embodiments of the present invention, the relative position of first user terminal and travel direction can be obtained by first user terminal self, also can obtain by network equipment.Namely first user terminal can be divided into the active and terminal passive-type of terminal, for the first user terminal that terminal is active, first user terminal independently can obtain relative position and the travel direction of first user terminal, or for the active first user terminal of terminal, first user terminal independently can obtain receiving mistiming corresponding to probe message that network equipment sends, then the mistiming that first user terminal obtains is sent to network equipment, obtained relative position and the travel direction of first user terminal by network equipment.For the first user terminal of terminal passive-type, first user terminal periodically can send probe message to network equipment, is obtained relative position and the travel direction of first user terminal by network equipment.

Except relative position and travel direction, travel situations can also comprise other information, as transport condition, described transport condition is at least used to indicate first user terminal and is in acceleration mode or deceleration regime, and transport condition can obtain based on the driving parameters of first user terminal in embodiments of the present invention.Wherein driving parameters at least comprises: travel speed and acceleration, and described travel speed can be obtained by the speed pickup be arranged in first user terminal, and described acceleration then can be obtained by the acceleration transducer be arranged in first user terminal.Based on travel speed and acceleration, especially acceleration can judge that current first user terminal place object is in acceleration mode or deceleration regime.Certainly, except the transport condition that travel speed and acceleration obtain first user terminal, can also obtain based on the brake indication information of first user terminal place vehicle further, the concrete embodiment of the present invention is no longer set forth.

102: network equipment, based on the travel situations of first user terminal, judges whether the travel situations of first user terminal meets traffic prewarning condition, if so, network equipment sends early warning information to first via edge element.

Travel situations due to first user terminal is used to indicate the situation that first user terminal place object travels on road, so can judge whether to meet traffic prewarning condition based on the travel situations of first user terminal, namely judge whether first user terminal place object is being in illegal running.

Such as can obtain the positive whichaway of first user terminal place object based on the travel direction in travel situations and relative position to travel, so its object that likely can conflict with travel direction collides, and therefore can judge whether the travel situations of first user terminal meets traffic prewarning condition based on travel direction and relative position.Application scenarios as shown in Figure 1, the travel situations instruction pedestrian that the first user terminal that pedestrian wears obtains jaywalks, and transport information shows that pedestrian is illegal running a red light, vehicle like this through crossing, pedestrian place may collide with it, now then can judge that the travel situations of first user terminal meets traffic prewarning condition.

And in order to improve accuracy of judgement degree, the embodiment of the present invention is assessed first user terminal place object in conjunction with transport condition and how long is passed through crossing in travel direction and relative position, be in acceleration mode or deceleration regime, based on this, such network equipment then can judge whether that meeting traffic prewarning condition sends early warning information.Network equipment can also judge whether to meet traffic prewarning condition further combined with transport information, as after the travel situations obtaining first user terminal, traffic lights in conjunction with current crossing is that red light green light judges whether to meet traffic prewarning condition, if the relative position instruction vehicle of first user terminal place object or pedestrian are within the scope of crossing, be in acceleration mode to move to direction, crossing, and the traffic lights at crossing is red light at present, then illustrate that vehicle or pedestrian will make a dash across the red light to pass through, therefore now can judge to meet traffic prewarning condition, send early warning information and note the behavior of passing through in violation of rules and regulations to indicate other vehicles.

In embodiments of the present invention, network equipment at least comprises the second roadside unit and security server, the course of work of the second roadside unit and security server can have following several mode, and in actual application, it can select any one mode to perform:

A kind of mode is the travel situations that the second roadside unit obtains first user terminal, and judge whether the travel situations of first user terminal meets traffic prewarning condition, if the second roadside unit is based on the travel situations determination first via edge element of first user terminal, early warning information is sent to first via edge element;

Another kind of mode is: the second roadside unit obtains the travel situations of first user terminal, and judges whether the travel situations of first user terminal meets traffic prewarning condition, if so, the travel situations of described first user terminal is sent to security server.Early warning information based on the travel situations determination first via edge element of first user terminal, and is sent to first via edge element by security server;

Another mode is: the second roadside unit obtains the travel situations of first user terminal, judge whether the travel situations of first user terminal meets traffic prewarning condition, if the second roadside unit is based on the travel situations determination first via edge element of first user terminal, and early warning information is sent to first via edge element by triggering secure server;

Other modes are: the second roadside unit will obtain the travel situations information needed of first user terminal, as received power etc. sends to security server, the travel situations of first user terminal is obtained by security server, judge whether the travel situations of first user terminal meets traffic prewarning condition, if security server is based on the travel situations determination first via edge element of first user terminal, and early warning information is sent to first via edge element.

Above-mentioned first via edge element is the second roadside unit of the first user terminal transmission early warning information for having an accident with the vehicles or pedestrians of violation to other.In embodiments of the present invention, the mode obtaining first via edge element can be: the second roadside unit or security server obtain the second user terminal position according to the relative position of early warning user terminal, then obtain the second roadside unit belonging to the second user terminal based on the positional information of each the second roadside unit, namely the second roadside unit belonging to such second user terminal is first via edge element.Wherein early warning user terminal is the above-mentioned first user terminal meeting traffic prewarning condition, and the second roadside unit belonging to the second user terminal is then the second roadside unit that range of signal covers the second user terminal.

When the second roadside unit belonging to the second user terminal comprises multiple, can choose any one second roadside unit is first via edge element; Certainly also likely judge that the first via edge element needing the second roadside unit of transmission early warning information and needs to send early warning information to the second user terminal is same second roadside unit, in such cases, if obtain first via edge element by security server, then early warning information can be returned to the second roadside unit by security server, if obtain first via edge element by the second roadside unit, then can send early warning information by the second roadside unit directly to the second user terminal.

103: first via edge element determines based on the travel situations of first user terminal the second user terminal receiving early warning information, and sending described early warning information to the second user terminal, early warning information performs the operation corresponding with early warning information for triggering the second user terminal.

In embodiments of the present invention, first via edge element can obtain the probable ranges of first user terminal based on relative position and travel direction, as being positioned at which crossing, and first via edge element can also based on travel speed and acceleration determination first user terminal place vehicle or pedestrian by time at crossing and speed, have that to travel the first user terminal of conflicting be then the second user terminal like this with first user terminal.As the second roadside unit in Fig. 1 detects that pedestrian exists illegal crossing behavior, then the first user terminal in vehicle D and vehicle E is the second user terminal.Now early warning information is sent to the second user terminal by first via edge element, and now the second user terminal then can send early warning alarm, and Stop and give way to make driver.Wherein early warning alarm can audible alarm, and vibrations are reported to the police or other any prompting modes.

From technique scheme, traffic prewarning method provided by the invention at least can obtain the second user terminal based on the travel situations of first user terminal, like this when needs send early warning information, early warning information only can be sent to the second user terminal, other first user terminals are made no longer to receive early warning information, other first user terminals not receiving early warning information then can perform corresponding operation like this, reduce the probability of other first user terminal execution errors operation, that is technique scheme provided by the invention only can send early warning information to the second user terminal targetedly, to reduce the probability of other first user terminals (not by the first user terminal of early warning) execution error operation.

And technique scheme provided by the invention can differ from the relative position and the travel direction that obtain first user terminal service time, to realize the location to first user terminal, and this mode locates (GlobalPositioningSystem relative to GPS, GPS) technology is more simple, and positioning precision is not by the impact of the spacing of first user terminal, thus raising positioning precision, reduce the probability of false triggering.

Below with the schematic diagram of traffic scene shown in Fig. 3, above-mentioned first user terminal or network equipment are described based on the travel situations that the mistiming obtains first user terminal.Figure 3 illustrates network equipment is four the second roadside units, is designated as RSU1, RSU2, RSU3 and RSU4 respectively.First user terminal is initiatively obtained to travel situations to illustrate, its process flow diagram as shown in Figure 4, can comprise the following steps:

201: first user terminal receives the probe message that multiple second roadside unit periodic broadcast sends, wherein carry the transmitting time of the second roadside unit broadcast transmission probe message in probe message, transmitting time indicates the second roadside unit when sending probe message.In order to accurately obtain relative position and travel direction based on the mistiming, the transmitting time in the probe message of multiple second roadside unit broadcast transmission needs synchronous.In embodiments of the present invention, transmitting time in the probe message of multiple second roadside unit broadcast transmission can be the absolute time based on source at the same time, as can adopt GPS locate use time, or the transmitting time in the probe message of multiple second roadside unit broadcast transmission be through each second roadside unit carry out clock synchronous process after relative time.

202: first user terminal, after receiving each probe message, obtains the time of reception that each probe message is corresponding, and each time of reception is carried out mathematic interpolation with corresponding transmitting time, obtains the mistiming that each time of reception is corresponding.

For Fig. 3, the time of reception that first user terminal obtains the probe message that RSU1, RSU2, RSU3 and RSU4 send is: R1, R2, R3 and R4, and transmitting time is: S1, S2, S3 and S4, then when difference computing time should be: R _i-S _i, wherein S _iand R _irSU respectively _itransmitting time and time of reception, the mistiming obtained accordingly respectively: A1, A2, A3 and A4.

203: the current multiple mistimings obtained compare by first user terminal, obtain the relative position of first user terminal.The method obtaining positional information is the signal difference between more multiple signal.Mistiming can be used for reflecting the time of probe message transmission and the distance of transmission in embodiments of the present invention, therefore can be obtained the relative position of first user terminal by more multiple mistiming.Still for above-mentioned time difference not: A1, A2, A3 and A4.

If through comparing discovery: A1>A2, illustrates that first user terminal is near RSU1 side, if the A1>A3 when A1>A2 and A1>A4, and much larger than A3 and A4, A2 and A1 then illustrates that first user terminal is near RSU1 and away from RSU3 and RSU4 side, therefore then can obtain the relative position of first user terminal after being compared multiple mistiming.

204: the mistiming that first user terminal obtains is received the probe message that same second roadside unit broadcasts the current each mistiming obtained respectively with the last time after compares, and obtains the travel direction of first user terminal.That is first user terminal is according to the variation tendency of probe message mistiming in repetitive measurement process meeting multiple RSU and send, and judges that UE is close or away from the position of each RSU, thus judges travel direction.And should be noted that a bit: when the variation tendency of the mistiming that the probe message sent multiple RSU obtains in repetitive measurement compares, is the transmitting time of same second roadside unit and time of reception are compared.

Still for Fig. 3, A1 ', A2 ', A3 ', A4 ' was respectively in the upper mistiming once obtained, compare with current mistiming A1, A2, A3, A4 obtained, work as A1 ' >A1, A2 ' >A2, A3 ' >A3 and A4 ' >A4, then can judge that first user terminal moves near RSU1 general orientation, and gradually near the direction of RSU3 and RSU4.Certainly, if find A1 ' <A1, A2 ' <A2 but A3 ' >A3, A4 ' >A4, then can illustrate that first user terminal is towards RSU3 and RSU4, but the position travelled away from RSU1 and RSU2, the travel direction that first user terminal is general can be judged in this way, and first user terminal can be indicated to be sail to crossing or sailed out of crossing.

As shown in Figure 5, when to it illustrates network equipment be the second roadside unit, the second roadside unit obtains the relative position of first user terminal and the flow process of travel direction, can comprise the following steps:

301: the second roadside units receive the probe message that first user terminal periodic sends, and wherein carry the transmitting time that first user terminal broadcast sends probe message in probe message.

302: the second roadside units, after receiving probe message, obtain the time of reception that probe message is corresponding.

Time of reception and transmitting time are carried out mathematic interpolation and obtain the mistiming by 303: the second roadside units, other second roadside units will be sent to the mistiming, and receive the mistiming that other second roadside units obtain after receiving probe message, such second roadside unit can obtain the mistiming of same first user terminal in different second roadside unit, makes the second roadside unit can compare to multiple mistimings of same first user terminal the relative position and travel direction that obtain first user terminal.

The current multiple mistimings obtained compare by 304: the second roadside units, obtain the relative position of first user terminal, wherein the current multiple mistimings obtained comprise mistiming that the second roadside unit obtains after receiving probe message and the mistiming that other the second roadside units obtain after receiving probe message.

The mistiming that 305: the second roadside units obtain the current each mistiming obtained is received the probe message of same first user terminal broadcast respectively with the last time after compares, and obtains the travel direction of first user terminal.

In embodiments of the present invention, it is identical with step corresponding in process flow diagram shown in above-mentioned Fig. 4 with the mode of travel direction that the second roadside unit obtains relative position, no longer sets forth 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, as shown in Figure 6, can comprise: first user terminal 11, network equipment 12, first via edge element 13 and the second user terminal 14.

Wherein, first user terminal 11 or network equipment 12, for the multiple mistimings obtained based on the current multiple mistiming obtained and last time, obtain the travel situations of first user terminal, wherein the mistiming is the transmitting time of probe message and the difference of time of reception.The travel situations of first user terminal is used to indicate the situation that first user terminal place object travels on road, such as, indicate the travel direction of first user terminal place vehicle on road and transport condition (being in acceleration mode or deceleration regime).

In embodiments of the present invention, the travel situations of first user terminal at least comprises the relative position of first user terminal and the travel direction of first user terminal, wherein relative position can be obtained based on the current multiple mistimings obtained by first user terminal or network equipment, travel direction then can be obtained based on the current multiple mistiming obtained and the last multiple mistimings obtained by first user terminal or network equipment, specifically can consult process flow diagram shown in above-mentioned Fig. 4 and Fig. 5.

Network equipment 12, for the travel situations based on first user terminal, judges whether the travel situations of first user terminal meets traffic prewarning condition, if send early warning information to first via edge element.Travel situations due to first user terminal is used to indicate the situation that first user terminal place object travels on road, so can judge whether to meet traffic prewarning condition based on the travel situations of first user terminal, namely judge whether first user terminal place object is being in illegal running.

First via edge element 13, for determining based on the travel situations of first user terminal the second user terminal accepting early warning information, and send early warning information to the second user terminal, wherein early warning information performs the operation corresponding with early warning information for triggering the second user terminal.In embodiments of the present invention, first via edge element can obtain the probable ranges of first user terminal based on relative position and travel direction, as being positioned at which crossing, and first via edge element can also based on travel speed and acceleration determination first user terminal place vehicle or pedestrian by time at crossing and speed, have that to travel the first user terminal of conflicting be then the second user terminal like this with first user terminal.As the second roadside unit in Fig. 1 detects that pedestrian exists illegal crossing behavior, then the first user terminal in vehicle D and vehicle E is the second user terminal.Now early warning information is sent to the second user terminal by first via edge element, and now the second user terminal then can send early warning alarm, and Stop and give way to make driver.Wherein early warning alarm can audible alarm, and vibrations are reported to the police or other any prompting modes.

From technique scheme, traffic prewarning system provided by the invention at least can obtain the second user terminal based on the travel situations of first user terminal, like this when needs send early warning information, early warning information only can be sent to the second user terminal, other first user terminals are made no longer to receive early warning information, other first user terminals not receiving early warning information then can perform corresponding operation like this, reduce the probability of other first user terminal execution errors operation, that is technique scheme provided by the invention only can send early warning information to the second user terminal targetedly, to reduce the probability of other first user terminals (not by the first user terminal of early warning) execution error operation.

And technique scheme provided by the invention can differ from the relative position and the travel direction that obtain first user terminal service time, to realize the location to first user terminal, and this mode is relative to more simple GPS location technology, and positioning precision is not by the impact of the spacing of first user terminal, thus raising positioning precision, reduce the probability of false triggering.

Refer to Fig. 7, it illustrates the process flow diagram of the another kind of traffic prewarning method that the embodiment of the present invention provides, can comprise the following steps:

701: obtain the current multiple mistimings obtained, wherein each mistiming is the time of reception of same probe message and the difference of transmitting time.In embodiments of the present invention, probe message can be sent by the second roadside unit periodic broadcast, and carries transmitting time in probe message with the time indicating the second roadside unit to send probe message.

After first user terminal receives probe message, obtain the time of reception that probe message is corresponding, the difference calculated between time of reception and transmitting time obtains the mistiming, and then first user terminal can be uploaded to the second roadside unit after obtaining the mistiming.

Certain probe message also by first user terminal periodic broadcast transmission, and can carry transmitting time with the time indicating first user terminal to send probe message in probe message.Second roadside unit, after receiving probe message, obtains the time of reception that probe message is corresponding; Time of reception and described transmitting time are carried out mathematic interpolation and obtains the mistiming, other second roadside units will be sent to the mistiming, and receiving the mistiming that other second roadside units obtain after receiving probe message, such second roadside unit can obtain the mistiming of same first user terminal in different second roadside unit.

702: based on the current multiple mistiming obtained and the last multiple mistimings obtained, obtain the travel situations of first user terminal.In embodiments of the present invention, the travel situations of first user terminal is used to indicate the situation that first user terminal place object travels on road, such as, indicate the travel direction of first user terminal place vehicle on road and transport condition (being in acceleration mode or deceleration regime).Wherein, the travel situations of first user terminal at least comprises the relative position of first user terminal and the travel direction of first user terminal, relative position can be obtained based on the current multiple mistimings obtained by first user terminal or network equipment, travel direction then can be obtained based on the current multiple mistiming obtained and the last multiple mistimings obtained by first user terminal or network equipment, specifically can consult process flow diagram shown in above-mentioned Fig. 4 and Fig. 5, the embodiment of the present invention is no longer set forth.

703: based on the travel situations of first user terminal, judge whether the travel situations of first user terminal meets traffic prewarning condition.Travel situations due to first user terminal is used to indicate the situation that first user terminal place object travels on road, so can judge whether to meet traffic prewarning condition based on the travel situations of first user terminal, namely judge whether first user terminal place object is being in illegal running.

704: when the travel situations of first user terminal meets traffic prewarning condition, send early warning information, early warning information performs the operation corresponding with early warning information for triggering the second user terminal, and the second user terminal obtains based on the travel situations of first user terminal.

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, and its structural representation as shown in Figure 8, can comprise: obtain unit 20, computing unit 21, judging unit 22 and transmitting element 23.

Obtain unit 20, for obtaining the current multiple mistimings obtained, wherein each mistiming is the time of reception of same probe message and the difference of transmitting time.In embodiments of the present invention, probe message can be sent by the second roadside unit periodic broadcast, and carries transmitting time in probe message with the time indicating the second roadside unit to send probe message.After first user terminal receives probe message, obtain the time of reception that probe message is corresponding, then the difference calculated between time of reception and transmitting time obtains the mistiming.First user terminal can be uploaded to the acquisition unit 20 of the second roadside unit after obtaining the mistiming.

Certain probe message also by first user terminal periodic broadcast transmission, and can carry transmitting time with the time indicating first user terminal to send probe message in probe message.Obtain unit 20 after receiving probe message, obtain the time of reception that probe message is corresponding; Time of reception and described transmitting time are carried out mathematic interpolation and obtains the mistiming, other second roadside units will be sent to the mistiming, and receive the mistiming that other second roadside units obtain after receiving probe message, obtain unit 20 like this and can obtain the mistiming of same first user terminal in different second roadside unit.

Computing unit 21, for based on the current multiple mistiming obtained and the last multiple mistimings obtained, obtains the travel situations of first user terminal.In embodiments of the present invention, travel situations at least comprises the relative position of first user terminal and the travel direction of first user terminal, wherein relative position is obtained based on the current multiple mistimings obtained by computing unit 21, travel direction then can be obtained based on the current multiple mistiming obtained and the last multiple mistimings obtained by computing unit 21, specifically can consult process flow diagram shown in above-mentioned Fig. 5.

Except relative position and travel direction, travel situations can also comprise other information, as transport condition, described transport condition is at least used to indicate first user terminal and is in acceleration mode or deceleration regime, and transport condition can obtain based on the driving parameters of first user terminal by computing unit 21 in embodiments of the present invention.Wherein driving parameters at least comprises: travel speed and acceleration, and described travel speed can be obtained by the speed pickup be arranged in first user terminal, and described acceleration then can be obtained by the acceleration transducer be arranged in first user terminal.Based on travel speed and acceleration, especially acceleration can judge that current first user terminal place object is in acceleration mode or deceleration regime.Certainly, except the transport condition that travel speed and acceleration obtain first user terminal, can also obtain based on the brake indication information of first user terminal place vehicle further, the concrete embodiment of the present invention is no longer set forth.

Judging unit 22, for the travel situations based on first user terminal, judges whether the travel situations of first user terminal meets traffic prewarning condition.Travel situations due to first user terminal is used to indicate the situation that first user terminal place object travels on road, so can judge whether to meet traffic prewarning condition based on the travel situations of first user terminal, namely judge whether first user terminal place object is being in illegal running, concrete deterministic process can consult the related description of said method embodiment, no longer sets forth this embodiment of the present invention.

Transmitting element 23, for when the travel situations of first user terminal meets traffic prewarning condition, send early warning information, early warning information performs the operation corresponding with early warning information for triggering the second user terminal, and the second user terminal obtains based on the travel situations of first user terminal.Wherein the second user terminal is possible have with first user terminal the first user terminal travelling and conflict, as the second roadside unit in above-mentioned Fig. 1 detects that pedestrian exists illegal crossing behavior, then the first user terminal in vehicle D and vehicle E is the second user terminal.Now the second user terminal then can send early warning alarm, and Stop and give way to make driver.Wherein early warning alarm can audible alarm, and vibrations are reported to the police or other any prompting modes.

Need to illustrate a bit at this: the probe message in above-described embodiment can adopt the message in D2Ddiscovery (terminal direct connection detection) technology, as D2Ddiscoverymessage (D2D probe message) or D2Dcommunicationmessage (D2D communication information), same first user terminal to the various information that the second roadside unit is uploaded also can carry with feedback message in upload, wherein feedback message also can adopt the message in D2Ddiscovery technology, as D2Ddiscoverymessage or D2Dcommunicationmessage.

Each embodiment in this instructions all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.For device class embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.

Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.

To the above-mentioned explanation of the disclosed embodiments, those skilled in the art are realized or uses the present invention.To be apparent for a person skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1. a traffic prewarning method, is characterized in that, described method comprises:

2. method according to claim 1, is characterized in that, described network equipment comprises the second roadside unit and security server;

Or

3. method according to claim 1, is characterized in that, described first user terminal or network equipment obtain the driving parameters of described first user terminal, and obtain the transport condition in described travel situations based on described driving parameters.

4. method according to claim 1, is characterized in that, described first user terminal, based on the current multiple mistiming obtained and the last multiple mistimings obtained, obtains the travel situations of described first user terminal, comprising:

5. method according to claim 1, is characterized in that, described network equipment, based on the current multiple mistiming obtained and the last multiple mistimings obtained, obtains the travel situations of described first user terminal, comprising:

6. a traffic prewarning system, is characterized in that, comprising: first user terminal, network equipment and the second user terminal;

7. system according to claim 6, is characterized in that, described network equipment comprises the second roadside unit and security server;

Or

8. system according to claim 6, is characterized in that, described first user terminal or network equipment, for obtaining the driving parameters of described first user terminal, and obtains the transport condition in described travel situations based on described driving parameters.

9. a traffic prewarning method, is characterized in that, described method comprises:

10. method according to claim 9, is characterized in that, described method also comprises: the driving parameters obtaining described first user terminal, and obtains the transport condition in described travel situations based on described driving parameters.

11. methods according to claim 9, is characterized in that, the described acquisition current multiple mistimings obtained, comprising:

Or

12. methods according to claim 11, is characterized in that, described based on the current multiple mistiming obtained and the last multiple mistimings obtained, and obtain the travel situations of first user terminal, comprising:

13. 1 kinds of traffic prewarning devices, is characterized in that, described device comprises:

14. devices according to claim 13, is characterized in that, described computing unit, for obtaining the driving parameters of described first user terminal, and obtain the transport condition in described travel situations based on described driving parameters.

15. devices according to claim 13, it is characterized in that, described acquisition unit, for obtaining the probe message that first user terminal periodic sends, after receiving probe message, obtain the time of reception that described probe message is corresponding, described time of reception and described transmitting time are carried out mathematic interpolation and obtains the mistiming, is sent to other second roadside units the described mistiming, and receives the mistiming of other second roadside units transmission; The transmitting time that described first user terminal broadcast sends described probe message is carried in wherein said probe message;

Or

16. devices according to claim 15, it is characterized in that, described computing unit, for the current multiple mistimings obtained are compared, obtain the relative position of first user terminal, and compare for the mistiming obtained after the current each mistiming obtained is received same probe message with the last time respectively, obtain the travel direction of first user terminal.