WO2017054290A1 - 一种交通预警方法、装置及系统 - Google Patents

一种交通预警方法、装置及系统 Download PDF

Info

Publication number
WO2017054290A1
WO2017054290A1 PCT/CN2015/093542 CN2015093542W WO2017054290A1 WO 2017054290 A1 WO2017054290 A1 WO 2017054290A1 CN 2015093542 W CN2015093542 W CN 2015093542W WO 2017054290 A1 WO2017054290 A1 WO 2017054290A1
Authority
WO
WIPO (PCT)
Prior art keywords
user terminal
roadside unit
relative position
driving
information
Prior art date
Application number
PCT/CN2015/093542
Other languages
English (en)
French (fr)
Inventor
张晨璐
Original Assignee
宇龙计算机通信科技(深圳)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宇龙计算机通信科技(深圳)有限公司 filed Critical 宇龙计算机通信科技(深圳)有限公司
Publication of WO2017054290A1 publication Critical patent/WO2017054290A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems

Definitions

  • the invention belongs to the technical field of vehicle networks, and more particularly to a traffic warning method, device and system.
  • Vehicle network technology is the core technology of the future 5G (fifth generation mobile communication technology) network developed in recent years. 3GPP (3rd Generation Partnership Project) and 2015 have carried out a lot of research work on vehicle network technology, and The potential technical scenarios of vehicle network technology are given.
  • a traffic information broadcasting system based on a roadside unit is proposed in SA Technical Report TR22.885.
  • the user equipment User Equipment
  • the RSU Radioad Side Unit
  • the RSU The user terminal sends an alert broadcast.
  • the early warning information broadcast does not need to be broadcast to all UEs.
  • the vehicle A and the vehicle B will be caused.
  • the existing system needs the ability to accurately identify the vehicle's position.
  • the present invention provides a traffic warning method, apparatus, and system for transmitting early warning information to certain first user terminals in a targeted manner, thereby reducing the probability of other first user terminals performing erroneous operations.
  • the technical solutions are as follows:
  • the present invention provides a traffic warning method, the method comprising:
  • the network side device obtains the relative position of the first user terminal, and obtains the driving condition of the first user terminal based on the currently obtained relative position and the previously obtained relative position, wherein the relative position is used to indicate the same first user.
  • the position of the terminal relative to the first roadside unit at different times Set
  • the network side device determines, according to the driving condition of the first user terminal, whether the driving condition of the first user terminal satisfies a traffic warning condition, and if the warning information is sent to the second roadside unit;
  • the second roadside unit determines a second user terminal that receives the early warning information based on the driving condition of the first user terminal, and sends the early warning information to the second user terminal, where the early warning information is used to trigger The second user terminal performs an operation corresponding to the early warning information.
  • the network side device comprises a first roadside unit and a security server
  • the first roadside unit obtains the driving condition of the first user terminal, and determines whether the driving condition of the first user terminal satisfies a traffic warning condition based on the driving condition of the first user terminal, and if yes, to the first
  • the second roadside unit sends the warning information
  • the first user terminal or the first roadside unit obtains the driving condition of the first user terminal
  • the security server determines whether the driving condition of the first user terminal satisfies a traffic warning condition based on the driving condition of the first user terminal, and if yes, sends the warning information to the second roadside unit.
  • the first roadside unit or the security server determines the second roadside unit based on the driving condition of the first user terminal.
  • the first user terminal or the network side device obtains the driving parameter of the first user terminal, and obtains the driving state in the driving situation based on the driving parameter.
  • the network side device obtains a relative location of the first user terminal, including:
  • the first roadside unit periodically broadcasts a probe message, where the probe message carries information indicating the first roadside unit, and the information is location information of the first roadside unit or the Identification information of the first roadside unit;
  • the first user terminal After receiving the probe message broadcast by any one of the first roadside units, the first user terminal feeds back the information carried in the received probe message to the first roadside unit;
  • the network side device obtains a relative location of the first user terminal, including:
  • the first user terminal periodically broadcasts a probe message, where the probe message carries an identifier of the first user terminal;
  • the first roadside unit interacts with other first roadside units to respectively receive an identifier of the first user terminal;
  • the first roadside unit determines a relative position of the first user terminal based on a location of the first roadside unit that received the identifier of the same first user terminal.
  • the obtaining, according to the currently obtained relative position and the previously obtained relative position, the driving situation of the first user terminal comprising: the first roadside unit currently obtaining the relative position of the same first user terminal Comparing with the previously obtained relative position, the traveling direction of the first user terminal is obtained.
  • the present invention provides a traffic warning system, where the system includes: a first user terminal, a network side device, a second roadside unit, and a second user terminal;
  • the network side device is configured to obtain a relative position of the first user terminal, and obtain a driving situation of the first user terminal based on the currently obtained relative position and a previously obtained relative position, and based on the first user terminal a driving situation, determining whether the driving condition of the first user terminal satisfies a traffic warning condition, and if the warning information is sent to the second roadside unit, wherein the relative position is used to indicate that the same first user terminal is relatively different at different times At the location of the first roadside unit;
  • the second roadside unit is configured to determine, according to the driving condition of the first user terminal, a second user terminal that receives the early warning information, and send the early warning information to the second user terminal, where the early warning information And configured to trigger the second user terminal to perform an operation corresponding to the early warning information.
  • the network side device comprises a first roadside unit and a security server
  • the first roadside unit obtains the driving condition of the first user terminal, and determines whether the driving condition of the first user terminal satisfies a traffic warning condition based on the driving condition of the first user terminal, and if yes, to the first
  • the second roadside unit sends the warning information
  • the first user terminal or the first roadside unit obtains the driving condition of the first user terminal
  • the security server determines whether the driving condition of the first user terminal satisfies a traffic warning condition based on the driving condition of the first user terminal, and if yes, sends the warning information to the second roadside unit.
  • the second roadside unit is determined by the security server or the first roadside unit.
  • the first user terminal or the network side device obtains the driving parameter of the first user terminal, and obtains the driving state in the driving situation based on the driving parameter.
  • the present invention provides a traffic warning method, the method comprising:
  • the sending the warning information, where the warning information is used to trigger the second user terminal to perform an operation corresponding to the warning information, where the second user terminal is based on The driving condition of the first user terminal is obtained.
  • the method further comprises: obtaining a driving parameter of the first user terminal, and obtaining a driving state in the driving situation based on the driving parameter.
  • the obtaining the relative location of the first user terminal comprises:
  • the periodic broadcast sends a probe message, where the probe message carries information indicating the first roadside unit, where the information is location information of the first roadside unit or an identifier of the first roadside unit information;
  • the obtaining the relative location of the first user terminal comprises:
  • the relative position of the first user terminal is determined based on the location of the first roadside unit that received the identifier of the same first user terminal.
  • the obtaining, according to the currently obtained relative position and the previously obtained relative position, the driving situation of the first user terminal comprising: performing a relative position currently obtained by the same first user terminal and a previously obtained relative position. In comparison, the traveling direction of the first user terminal is obtained.
  • the present invention provides a traffic warning device, the device comprising:
  • Obtaining unit configured to obtain a relative position of the first user terminal, and obtain a driving situation of the first user terminal based on the currently obtained relative position and the previously obtained relative position, wherein the relative position is used to indicate the same first The position of a user terminal relative to the first roadside unit at different times;
  • a determining unit configured to determine, according to the driving condition of the first user terminal, whether the driving condition of the first user terminal meets a traffic warning condition
  • a sending unit configured to send, when the driving condition of the first user terminal meets the traffic warning condition, the warning information, where the warning information is used to trigger the second user terminal to perform an operation corresponding to the warning information,
  • the second user terminal is derived based on the driving condition of the first user terminal.
  • the obtaining unit is configured to obtain a driving parameter of the first user terminal, and obtain a driving state in the driving situation based on the driving parameter.
  • the obtaining unit is configured to periodically send a probe message, receive information carried in the probe message received by the first user terminal that is fed back by the first user terminal, and determine, according to the information fed back by the first user terminal, a relative position of a user terminal, wherein the probe message carries information indicating the first roadside unit, and the information is location information of the first roadside unit or an identifier of the first roadside unit information;
  • the obtaining unit is configured to receive, by the first user terminal, a periodic broadcast sending probe message, and interact with other first roadside units to respectively receive an identifier of the first user terminal, based on receiving the same
  • the location of the first roadside unit of the identifier of the first user terminal determines the relative location of the first user terminal, wherein the probe message carries the identifier of the first user terminal.
  • the obtaining unit is configured to compare the relative position currently obtained by the same first user terminal with the previously obtained relative position to obtain a traveling direction of the first user terminal.
  • the second user terminal may be obtained based on at least the driving condition of the first user terminal, so that if the warning information needs to be sent, the warning information may be sent only to the second user terminal, so that the other The first user terminal no longer receives the early warning information, so that the other first user terminal that does not receive the early warning information may perform a corresponding operation, reducing the probability that other first user terminals perform an erroneous operation, that is, the foregoing provided by the present invention.
  • the technical solution can specifically transmit the warning information to the second user terminal only to reduce the probability that other first user terminals (the first user terminal not being alerted) perform an erroneous operation.
  • FIG. 1 is a schematic diagram of a conventional traffic information broadcasting system based on a roadside unit
  • FIG. 2 is a flow chart of a traffic warning method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a traffic scenario according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of obtaining a driving situation of a first user terminal in a traffic warning method according to an embodiment of the present invention
  • FIG. 5 is another flowchart of obtaining a driving situation of a first user terminal in a traffic warning method according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a traffic warning system according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of another traffic warning method according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a traffic warning device according to an embodiment of the present invention.
  • FIG. 2 a signaling interaction diagram of a traffic warning method according to an embodiment of the present invention is shown, which may include the following steps:
  • the network side device obtains a relative position of the first user terminal, and obtains a driving situation of the first user terminal according to the currently obtained relative position and the previously obtained relative position, where the relative position is used to indicate that the same first user terminal is The position relative to the first roadside unit at different times.
  • the driving situation of the first user terminal is used to indicate that the object where the first user terminal is located is traveling on the road, for example, indicating the traveling direction and driving state of the vehicle where the first user terminal is located on the road (in acceleration) The state is still decelerating).
  • the driving situation of the first user terminal includes at least a relative position of the first user terminal and a traveling direction of the first user terminal, and the relative position may be obtained by the network side device by using a positioning technology, or may be based on a probe message sent by the network side device. The difference between the sending time and the receiving time of the first user terminal to obtain the probe message is calculated, and the driving direction is obtained by the network side device comparing the currently obtained relative position with the previously obtained relative position.
  • the driving situation may also include other information, such as a driving state, which is used to at least indicate whether the first user terminal is in an accelerated state or a decelerating state, and in the embodiment of the invention, the driving state may be based on The driving parameters of the first user terminal are obtained.
  • the driving parameters include at least: a running speed and an acceleration, which can be obtained by a speed sensor installed in the first user terminal, and the acceleration can be obtained by an acceleration sensor installed in the first user terminal. Based on the driving speed and acceleration, especially the acceleration, it can be determined whether the current object of the first user terminal is in an acceleration state or a deceleration state.
  • the driving speed and acceleration to obtain the driving state of the first user terminal, it may further be based on the first user terminal.
  • the brake indication information of the vehicle is obtained, which is not described in the embodiment of the present invention.
  • the network side device determines, according to the driving condition of the first user terminal, whether the driving condition of the first user terminal satisfies the traffic warning condition, and if the warning information is sent to the second roadside unit.
  • the driving situation of the first user terminal is used to indicate that the object of the first user terminal is traveling on the road, it may be determined whether the traffic warning condition is met, that is, the object of the first user terminal is determined based on the driving condition of the first user terminal. Whether you are in illegal driving.
  • the first direction can be judged based on the traveling direction and the relative position.
  • the driving condition of the user terminal satisfies the traffic warning condition.
  • the driving situation obtained by the first user terminal worn by the pedestrian indicates that the pedestrian is crossing the road, and the traffic information indicates that the pedestrian is illegally wearing a red light, so that the vehicle passing through the intersection where the pedestrian is located may collide with the vehicle.
  • the driving condition of the first user terminal satisfies the traffic warning condition.
  • the embodiment of the present invention combines the driving state in the traveling direction and the relative position to evaluate how long the object of the first user terminal passes through the intersection, whether it is in an acceleration state or a deceleration state, so that the network side device can be based thereon. Determine whether the traffic warning condition is met to send the warning information.
  • the network side device may further combine the traffic information to determine whether the traffic warning condition is met. For example, after obtaining the driving condition of the first user terminal, the traffic light of the current intersection is a red light green light to determine whether the traffic warning condition is met, if the first
  • the relative position of the object where the user terminal is located indicates that the vehicle or pedestrian is within the intersection and is in the acceleration state to move toward the intersection. At present, the traffic light at the intersection is a red light, indicating that the vehicle or the pedestrian is to traverse the red light, so that the judgment can be satisfied at this time. Traffic warning conditions, sending warning information to instruct other vehicles to pay attention to violations.
  • the network side device includes at least a first roadside unit and a security server, and the working process of the first roadside unit and the security server may be in the following manners. Ways to execute:
  • the first roadside unit obtains the driving condition of the first user terminal, and determines the first use Whether the driving condition of the terminal meets the traffic warning condition, and if the first roadside unit determines the second roadside unit based on the driving condition of the first user terminal, the warning information is sent to the second roadside unit;
  • the first roadside unit obtains the driving condition of the first user terminal, and determines whether the driving condition of the first user terminal satisfies the traffic warning condition, and if yes, sends the driving condition of the first user terminal to Security server.
  • the security server determines the second roadside unit based on the driving condition of the first user terminal, and sends the warning information to the second roadside unit;
  • the first roadside unit obtains the driving condition of the first user terminal, determines whether the driving condition of the first user terminal satisfies the traffic warning condition, and if the first roadside unit determines based on the driving condition of the first user terminal a second roadside unit, and triggering the security server to send the warning information to the second roadside unit;
  • the first roadside unit will obtain the information required for the driving situation of the first user terminal, such as receiving power, etc., and send it to the security server, and the security server obtains the driving condition of the first user terminal, and determines the driving of the first user terminal. Whether the situation satisfies the traffic warning condition, if the security server determines the second roadside unit based on the driving condition of the first user terminal, and sends the warning information to the second roadside unit.
  • the second roadside unit is a first roadside unit for transmitting early warning information to other first user terminals that may have an accident with a vehicle or pedestrian that is in violation.
  • the manner of obtaining the second roadside unit may be: the first roadside unit or the security server obtains the location of the second user terminal according to the relative position of the early warning user terminal, and then based on each first roadside unit.
  • the location information is used to obtain the first roadside unit to which the second user terminal belongs, such that the first roadside unit to which the second user terminal belongs is the second roadside unit.
  • the early warning user terminal is the first user terminal that satisfies the traffic warning condition
  • the first roadside unit to which the second user terminal belongs is the first roadside unit whose signal range covers the second user terminal.
  • the first roadside unit to which the second user terminal belongs includes more than one
  • the first roadside unit may be selected as the second roadside unit; of course, it is also possible to determine the first roadside unit that needs to send the warning information and the need
  • the second roadside unit that sends the early warning information to the second user terminal is the same first roadside unit.
  • the security is The server will transmit the early warning information to the first roadside unit. If the second roadside unit is obtained by the first roadside unit, the first roadside unit can directly send the early warning information to the second user terminal.
  • the second roadside unit determines, according to the driving condition of the first user terminal, the second user terminal that receives the early warning information, and sends the early warning information to the second user terminal, where the early warning information is used to trigger the second user terminal to execute and the early warning information. Corresponding operation.
  • the second roadside unit may obtain an approximate range of the first user terminal based on the relative position and the traveling direction, such as which intersection is located, and the second roadside unit may further determine the first based on the traveling speed and the acceleration.
  • the time and speed of the vehicle or pedestrian where the user terminal is located through the intersection, so that the first user terminal having a driving conflict with the first user terminal is the second user terminal. If the first roadside unit in FIG. 1 detects that the pedestrian has an illegal crossing behavior, the first user terminal in the vehicle D and the vehicle E is the second user terminal. At this time, the second roadside unit sends the warning information to the second user terminal, and the second user terminal sends an early warning alarm to stop the driver from giving off.
  • the warning alarm can be an audible alarm, a vibration alarm or any other prompting method.
  • the traffic warning method provided by the present invention can obtain the second user terminal based on at least the driving condition of the first user terminal, so that the warning information can be sent only to the second user if the warning information needs to be sent.
  • the terminal causes the other first user terminals to no longer receive the early warning information, so that the other first user terminals that have not received the early warning information can perform the corresponding operations, thereby reducing the probability that other first user terminals perform the wrong operation, that is, the present
  • the above technical solution provided by the invention can specifically transmit the warning information only to the second user terminal, so as to reduce the probability that other first user terminals (the first user terminal not being alerted) perform an erroneous operation.
  • the following describes the driving situation of the first user terminal by using the network side device shown in FIG. 3, wherein the network side device in FIG. 3 includes a plurality of first roadside units and a security server, and the flowchart thereof is as shown in FIG. As shown in 4, the following steps can be included:
  • the first roadside unit periodically broadcasts a probe message, where the probe message carries information indicating the first roadside unit, where the information is location information of the first roadside unit or identifier information of the first roadside unit.
  • the identification information is used to distinguish different first roadside units in the vehicle network.
  • the first user terminal After receiving the probe message broadcast by any one of the first roadside units, the first user terminal feeds back the information carried in the received probe message to the first roadside unit.
  • the first roadside unit determines the relative position of the first user terminal based on the information fed back by the first user terminal.
  • the location information of the first roadside unit or the identification information of the first roadside unit may indicate any one of the first roadside units, so when the first roadside unit receives the feedback from the first user terminal After the information, it can be determined which first roadside unit the feedback information belongs to, thereby determining the relative position of the first user terminal.
  • the first user terminal feeds back the information of RSU3-2 and RSU3-1, but does not feed back the information of RSU1-1, indicating that the first user terminal is in the coverage intersection area of RSU3-1 and RSU3-2.
  • the relative position of the first user terminal may be more accurately determined according to the received power or the time difference, such as in the coverage intersection area of the RSU3-1 and the RSU3-2 at the first user terminal, by receiving The power or time difference is used to determine whether the first user terminal is close to RSU3-1 or close to RSU3-2.
  • the received power when the received power corresponding to the RSU3-1 is greater than the received power corresponding to the RSU3-2, it is indicated that the probe message sent by the RSU3-1 and the RSU3-2 is received by the first user terminal more quickly.
  • the first user terminal is closer to RSU3-1.
  • the first roadside unit compares the current relative position obtained by the same first user terminal with the previously obtained relative position, to obtain a traveling direction of the first user terminal. For example, if the relative position of the first user terminal is changed from the coverage intersection area of the RSU3-1 and the RSU 3-2 to the coverage area of the RSU 3-2, the direction of travel of the first user terminal is the direction of the departure intersection. If the traveling direction of the first user terminal cannot be obtained by comparing the relative positions of the two adjacent times, the currently obtained relative position may be compared with the previously obtained plurality of relative position positions to obtain the traveling direction of the first user terminal.
  • FIG. 5 shows another way for the network side device to obtain the driving condition of the first user terminal, which may include the following steps:
  • the first user terminal periodically broadcasts a probe message, where the probe message carries the first An identifier of a user terminal, such that if the first roadside unit can receive the probe message, the first user terminal is located in the coverage area of the first roadside unit.
  • the first roadside unit interacts with the other first roadside unit to respectively receive an identifier of the first user terminal.
  • the first roadside unit determines a relative location of the first user terminal based on a location of the first roadside unit that receives the identifier of the same first user terminal.
  • the identifier of the first user terminal received by the first roadside unit is obtained for the first roadside unit to obtain the identifier of the same first user terminal, which first roadside unit is obtained, and thus the first The roadside unit may determine the relative position of the first user terminal based on the location of the first roadside unit of the identifier of the same first user terminal.
  • both RSU3-2 and RSU3-1 can receive the identifier of the same first user terminal, and the first roadside unit can determine the coverage intersection area of RSU3-1 and RSU3-2.
  • the relative position of the first user terminal may be more accurately determined according to the received power or the time difference, such as in the coverage intersection area of the RSU3-1 and the RSU3-2 at the first user terminal, by receiving The power or time difference is used to determine whether the first user terminal is close to RSU3-1 or close to RSU3-2.
  • the received power when the received power corresponding to the RSU3-1 is greater than the received power corresponding to the RSU3-2, it is indicated that the probe message sent by the RSU3-1 and the RSU3-2 is received by the first user terminal more quickly.
  • the first user terminal is closer to RSU3-1.
  • the first roadside unit compares the relative position currently obtained by the same first user terminal with the previously obtained relative position, and obtains the traveling direction of the first user terminal. For example, if the relative position of the first user terminal is changed from the coverage intersection area of the RSU3-1 and the RSU 3-2 to the coverage area of the RSU 3-2, the direction of travel of the first user terminal is the direction of the departure intersection. If the traveling direction of the first user terminal cannot be obtained by comparing the relative positions of the two adjacent times, the currently obtained relative position may be compared with the previously obtained plurality of relative position positions to obtain the traveling direction of the first user terminal.
  • the unit or the first user terminal locates the relative position of the first user terminal, and locates the traveling direction of the first user terminal based on the relative position of the first user terminal, relative to a GPS (Global Positioning System) positioning technology. It is simpler to say, and the positioning accuracy is not affected by the distance between the first user terminals, thereby improving the positioning accuracy and reducing the probability of false triggering.
  • GPS Global Positioning System
  • the embodiment of the present invention further provides a traffic warning system, as shown in FIG. 6 , which may include: a first user terminal 11 , a network side device 12 , and a second roadside unit 13 . And a second user terminal 14.
  • a traffic warning system as shown in FIG. 6 , which may include: a first user terminal 11 , a network side device 12 , and a second roadside unit 13 . And a second user terminal 14.
  • the network side device 12 is configured to obtain a relative position of the first user terminal, obtain a driving situation of the first user terminal based on the currently obtained relative position and a previously obtained relative position, and based on the first user terminal. a driving situation, determining whether the driving condition of the first user terminal satisfies a traffic warning condition, and if the warning information is sent to the second roadside unit, wherein the relative position is used to indicate that the same first user terminal is at different times Relative to the position of the first roadside unit.
  • the driving situation of the first user terminal is used to indicate that the object where the first user terminal is located is traveling on the road, for example, indicating the traveling direction and driving state of the vehicle where the first user terminal is located on the road (in acceleration) The state is still decelerating).
  • the driving situation of the first user terminal includes at least a relative position of the first user terminal and a traveling direction of the first user terminal, and the relative position may be obtained by the network side device by using a positioning technology, or may be based on a probe message sent by the network side device. The difference between the sending time and the receiving time of the first user terminal to obtain the probe message is calculated, and the driving direction is obtained by the network side device comparing the currently obtained relative position with the previously obtained relative position.
  • the driving situation may also include other information, such as a driving state, which is used to at least indicate whether the first user terminal is in an accelerated state or a decelerating state, and in the embodiment of the invention, the driving state may be based on The driving parameters of the first user terminal are obtained.
  • the driving parameter includes at least: a driving speed and an acceleration, and the driving speed may be obtained by a speed sensor installed in the first user terminal, and the acceleration may be added by the first user terminal. The speed sensor is obtained. Based on the driving speed and acceleration, especially the acceleration, it can be determined whether the current object of the first user terminal is in an acceleration state or a deceleration state.
  • the braking instruction information of the vehicle where the first user terminal is located may be further obtained, which is not described in the embodiment of the present invention.
  • the driving situation of the first user terminal is used to indicate that the object of the first user terminal is traveling on the road, it may be determined whether the traffic warning condition is met, that is, the object of the first user terminal is determined based on the driving condition of the first user terminal. Whether you are in illegal driving.
  • the first direction can be judged based on the traveling direction and the relative position.
  • the driving condition of the user terminal satisfies the traffic warning condition.
  • the driving situation obtained by the first user terminal worn by the pedestrian indicates that the pedestrian is crossing the road, and the traffic information indicates that the pedestrian is illegally wearing a red light, so that the vehicle passing through the intersection where the pedestrian is located may collide with the vehicle.
  • the driving condition of the first user terminal satisfies the traffic warning condition.
  • the embodiment of the present invention combines the driving state in the traveling direction and the relative position to evaluate how long the object of the first user terminal passes through the intersection, whether it is in an acceleration state or a deceleration state, so that the network side device can be based thereon. Determine whether the traffic warning condition is met to send the warning information.
  • the network side device may further combine the traffic information to determine whether the traffic warning condition is met. For example, after obtaining the driving condition of the first user terminal, the traffic light of the current intersection is a red light green light to determine whether the traffic warning condition is met, if the first
  • the relative position of the object where the user terminal is located indicates that the vehicle or pedestrian is within the intersection and is in the acceleration state to move toward the intersection. At present, the traffic light at the intersection is a red light, indicating that the vehicle or the pedestrian is to traverse the red light, so that the judgment can be satisfied at this time. Traffic warning conditions, sending warning information to instruct other vehicles to pay attention to violations.
  • the network side device includes at least a first roadside unit and a security server, and the working process of the first roadside unit and the security server may be in the following manners. Ways to execute:
  • the first roadside unit obtains the driving condition of the first user terminal, and determines whether the driving condition of the first user terminal satisfies the traffic warning condition, if the first roadside unit determines the driving condition based on the first user terminal.
  • the second roadside unit sends the warning information to the second roadside unit;
  • the first roadside unit obtains the driving condition of the first user terminal, and determines whether the driving condition of the first user terminal satisfies the traffic warning condition, and if yes, sends the driving condition of the first user terminal to Security server.
  • the security server determines the second roadside unit based on the driving condition of the first user terminal, and sends the warning information to the second roadside unit;
  • the first roadside unit obtains the driving condition of the first user terminal, determines whether the driving condition of the first user terminal satisfies the traffic warning condition, and if the first roadside unit determines based on the driving condition of the first user terminal a second roadside unit, and triggering the security server to send the warning information to the second roadside unit;
  • the first roadside unit will obtain the information required for the driving situation of the first user terminal, such as receiving power, etc., and send it to the security server, and the security server obtains the driving condition of the first user terminal, and determines the driving of the first user terminal. Whether the situation satisfies the traffic warning condition, if the security server determines the second roadside unit based on the driving condition of the first user terminal, and sends the warning information to the second roadside unit.
  • the second roadside unit is a first roadside unit for transmitting early warning information to other first user terminals that may have an accident with a vehicle or pedestrian that is in violation.
  • the manner of obtaining the second roadside unit may be: the first roadside unit or the security server obtains the location of the second user terminal according to the relative position of the early warning user terminal, and then based on each first roadside unit.
  • the location information is used to obtain the first roadside unit to which the second user terminal belongs, such that the first roadside unit to which the second user terminal belongs is the second roadside unit.
  • the early warning user terminal is the first user terminal that satisfies the traffic warning condition
  • the first roadside unit to which the second user terminal belongs is the first roadside unit whose signal range covers the second user terminal.
  • the first roadside unit to which the second user terminal belongs includes more than one
  • the first roadside unit may be selected as the second roadside unit; of course, it is also possible to determine the first roadside unit that needs to send the warning information and the need
  • the second roadside unit that sends the warning information to the second user terminal is the same first Roadside unit, in this case, if the second roadside unit is obtained by the security server, the security server will transmit the warning information back to the first roadside unit, if the first roadside unit obtains the second road
  • the edge unit can send the early warning information directly to the second user terminal by the first roadside unit.
  • a second roadside unit 13 configured to determine, according to the driving condition of the first user terminal, a second user terminal that receives the early warning information, and send the early warning information to the second user terminal, where the early warning information is used The second user terminal is triggered to perform an operation corresponding to the early warning information.
  • the second roadside unit may obtain an approximate range of the first user terminal based on the relative position and the traveling direction, such as which intersection is located, and the second roadside unit may further determine the first based on the traveling speed and the acceleration.
  • the time and speed of the vehicle or pedestrian where the user terminal is located through the intersection, so that the first user terminal having a driving conflict with the first user terminal is the second user terminal. If the first roadside unit in FIG. 1 detects that the pedestrian has an illegal crossing behavior, the first user terminal in the vehicle D and the vehicle E is the second user terminal. At this time, the second roadside unit sends the warning information to the second user terminal, and the second user terminal sends an early warning alarm to stop the driver from giving off.
  • the warning alarm can be an audible alarm, a vibration alarm or any other prompting method.
  • the traffic warning system provided by the present invention can obtain the second user terminal based on at least the driving condition of the first user terminal, so that the warning information can be sent only to the second user if the warning information needs to be sent.
  • the terminal causes the other first user terminals to no longer receive the early warning information, so that the other first user terminals that have not received the early warning information can perform the corresponding operations, thereby reducing the probability that other first user terminals perform the wrong operation, that is, the present
  • the above technical solution provided by the invention can specifically transmit the warning information only to the second user terminal, so as to reduce the probability that other first user terminals (the first user terminal not being alerted) perform an erroneous operation.
  • FIG. 7 is a flowchart of another traffic warning method according to an embodiment of the present invention, which may include the following steps:
  • 701 Obtain a relative position of the first user terminal, and obtain a driving situation of the first user terminal, where the relative position is used to indicate that the same first user terminal is at different times, based on the currently obtained relative position and the previously obtained relative position. Relative to the position of the first roadside unit.
  • the driving situation of the first user terminal is used to indicate that the object where the first user terminal is located is traveling on the road, for example, indicating the traveling direction and driving state of the vehicle where the first user terminal is located on the road (in acceleration) The state is still decelerating).
  • the driving situation of the first user terminal includes at least a relative position of the first user terminal and a traveling direction of the first user terminal, and the relative position may be obtained by the network side device by using a positioning technology, or may be based on a probe message sent by the network side device. The difference between the sending time and the receiving time of the first user terminal to obtain the probe message is calculated, and the driving direction is obtained by the network side device comparing the currently obtained relative position with the previously obtained relative position.
  • the driving situation may also include other information, such as a driving state, which is used to at least indicate whether the first user terminal is in an accelerated state or a decelerating state, and in the embodiment of the invention, the driving state may be based on The driving parameters of the first user terminal are obtained.
  • the driving parameters include at least: a running speed and an acceleration, which can be obtained by a speed sensor installed in the first user terminal, and the acceleration can be obtained by an acceleration sensor installed in the first user terminal. Based on the driving speed and acceleration, especially the acceleration, it can be determined whether the current object of the first user terminal is in an acceleration state or a deceleration state.
  • the braking instruction information of the vehicle where the first user terminal is located may be further obtained, which is not described in the embodiment of the present invention.
  • the 702 Determine, according to the driving condition of the first user terminal, whether the driving condition of the first user terminal satisfies the traffic warning condition. Since the driving situation of the first user terminal is used to indicate that the object of the first user terminal is traveling on the road, it may be determined whether the traffic warning condition is met, that is, the object of the first user terminal is determined based on the driving condition of the first user terminal. Whether you are in illegal driving.
  • the first direction can be judged based on the traveling direction and the relative position.
  • the driving condition of the user terminal satisfies the traffic warning condition.
  • the driving situation obtained by the first user terminal worn by the pedestrian indicates that the pedestrian is crossing the road, and the traffic information indicates that the pedestrian is illegally wearing a red light, so that The vehicle at the intersection where the pedestrian is located may collide with it.
  • the driving condition of the first user terminal satisfies the traffic warning condition.
  • the embodiment of the present invention combines the driving state in the traveling direction and the relative position to evaluate how long the object of the first user terminal passes through the intersection, whether it is in an acceleration state or a deceleration state, so that the network side device can be based thereon. Determine whether the traffic warning condition is met to send the warning information.
  • the network side device may further combine the traffic information to determine whether the traffic warning condition is met. For example, after obtaining the driving condition of the first user terminal, the traffic light of the current intersection is a red light green light to determine whether the traffic warning condition is met, if the first
  • the relative position of the object where the user terminal is located indicates that the vehicle or pedestrian is within the intersection and is in the acceleration state to move toward the intersection. At present, the traffic light at the intersection is a red light, indicating that the vehicle or the pedestrian is to traverse the red light, so that the judgment can be satisfied at this time. Traffic warning conditions, sending warning information to instruct other vehicles to pay attention to violations.
  • the second roadside unit is a first roadside unit for transmitting early warning information to other first user terminals that may have an accident with a vehicle or pedestrian that is in violation.
  • the manner of obtaining the second roadside unit may be: the first roadside unit or the security server obtains the location of the second user terminal according to the relative position of the early warning user terminal, and then based on each first roadside unit.
  • the location information is used to obtain the first roadside unit to which the second user terminal belongs, such that the first roadside unit to which the second user terminal belongs is the second roadside unit.
  • the early warning user terminal is the first user terminal that satisfies the traffic warning condition
  • the first roadside unit to which the second user terminal belongs is the first roadside unit whose signal range covers the second user terminal.
  • the first roadside unit to which the second user terminal belongs includes more than one
  • the first roadside unit may be selected as the second roadside unit; of course, it is also possible to determine the first roadside unit that needs to send the warning information and the need
  • the second roadside unit that sends the early warning information to the second user terminal is the same first roadside unit. In this case, if the second roadside unit is obtained by the security server, the security server returns the warning information. To the first roadside unit, if the second roadside unit is obtained by the first roadside unit, the first roadside unit may directly send the warning information to the second user terminal.
  • the warning information is used to trigger the second user terminal to perform an operation corresponding to the warning information, and the second user terminal is obtained based on the driving condition of the first user terminal.
  • the approximate range of the first user terminal may be obtained based on the relative position and the driving direction, such as which intersection is located, and the time at which the vehicle or pedestrian of the first user terminal is passing through the intersection may also be determined based on the driving speed and the acceleration. And the speed, such that the first user terminal having a driving conflict with the first user terminal is the second user terminal.
  • the first roadside unit in FIG. 1 detects that the pedestrian has an illegal crossing behavior
  • the first user terminal in the vehicle D and the vehicle E is the second user terminal.
  • the second roadside unit sends the warning information to the second user terminal, and the second user terminal sends an early warning alarm to stop the driver from giving off.
  • the warning alarm can be an audible alarm, a vibration alarm or any other prompting method.
  • the traffic warning method provided by the present invention can obtain the second user terminal based on at least the driving condition of the first user terminal, so that the warning information can be sent only to the second user if the warning information needs to be sent.
  • the terminal causes the other first user terminals to no longer receive the early warning information, so that the other first user terminals that have not received the early warning information can perform the corresponding operations, thereby reducing the probability that other first user terminals perform the wrong operation, that is, the present
  • the above technical solution provided by the invention can specifically transmit the warning information only to the second user terminal, so as to reduce the probability that other first user terminals (the first user terminal not being alerted) perform an erroneous operation.
  • the embodiment of the present invention further provides a traffic warning device.
  • the structure of the device is as shown in FIG. 8 , and may include: an obtaining unit 20 , a determining unit 21 , and a sending unit 22 .
  • the obtaining unit 20 is configured to obtain a relative position of the first user terminal, and obtain a driving situation of the first user terminal, where the relative position is used to indicate the same first user terminal, based on the currently obtained relative position and the previously obtained relative position. The position relative to the first roadside unit at different times.
  • the obtaining unit 20 may periodically broadcast and send a probe message, and receive information carried in the probe message received by the first user terminal that is fed back by the first user terminal, and determine the first information based on the information fed back by the first user terminal.
  • the relative position of the user terminal such that the obtaining unit 20 can
  • the relative position currently obtained by the same first user terminal is compared with the previously obtained relative position, and the traveling direction of the first user terminal is obtained.
  • the probe message carries information indicating the first roadside unit, and the information is location information of the first roadside unit or identification information of the first roadside unit.
  • the obtaining unit 20 receives the first user terminal periodically broadcasts the transmission detection message, and interacts with the other first roadside units to respectively receive the identifier of the first user terminal, based on the identifier of the same first user terminal received.
  • the position of the roadside unit is used to determine the relative position of the first user terminal, so that the obtaining unit 20 can also compare the relative position currently obtained by the same first user terminal with the previously obtained relative position, and obtain the first user terminal.
  • a driving direction wherein the probe message carries an identifier of the first user terminal.
  • the driving situation may also include other information, such as a driving state, which is at least used to indicate whether the first user terminal is in an accelerated state or a decelerating state, in which the driving state may be obtained in the embodiment of the present invention.
  • Unit 20 is derived based on the driving parameters of the first user terminal.
  • the driving parameters include at least: a running speed and an acceleration, which can be obtained by a speed sensor installed in the first user terminal, and the acceleration can be obtained by an acceleration sensor installed in the first user terminal. Based on the driving speed and acceleration, especially the acceleration, it can be determined whether the current object of the first user terminal is in an acceleration state or a deceleration state.
  • the braking instruction information of the vehicle where the first user terminal is located may be further obtained, which is not described in the embodiment of the present invention.
  • the determining unit 21 is configured to determine, according to the driving condition of the first user terminal, whether the driving condition of the first user terminal satisfies the traffic warning condition. Since the driving situation of the first user terminal is used to indicate that the object of the first user terminal is traveling on the road, it may be determined whether the traffic warning condition is met, that is, the object of the first user terminal is determined based on the driving condition of the first user terminal. For the specific judgment process, refer to the related description of the foregoing method embodiment, which is not described in the embodiment of the present invention.
  • the sending unit 22 is configured to: when the driving condition of the first user terminal meets the traffic warning condition, send the warning information, where the warning information is used to trigger the second user terminal to perform an operation corresponding to the warning information, where the second user terminal is based on the first user terminal The driving situation is obtained.
  • the second user terminal is a first user terminal that may have a driving conflict with the first user terminal. If the first roadside unit in FIG. 1 detects that the pedestrian has an illegal crossing behavior, the first of the vehicle D and the vehicle E The user terminal is a second user terminal. At this time, the second user terminal will issue an early warning alarm to stop the driver from leaving.
  • the warning alarm can be an audible alarm, a vibration alarm or any other prompting method.
  • the probe message in the above embodiment may use a message in a D2D discovery technology, such as a D2D discovery message or a D2D communication message, the same first.
  • the various information uploaded by the user terminal to the first roadside unit may also be carried in the feedback message, and the feedback message may also adopt a message in the D2D discovery technology, such as a D2D discovery message or a D2D communication message.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)

Abstract

本发明提供一种交通预警方法、装置及系统，可以至少基于第一用户终端的行驶情况来得到第二用户终端，这样在需要发送预警信息的情况下，可以将预警信息仅发送至第二用户终端，使得其他第一用户终端不再接收预警信息，这样其他未接收到预警信息的第一用户终端则可以执行相对应的操作，降低其他第一用户终端执行错误操作的几率，也就是说本发明提供的上述技术方案可以有针对性的仅向第二用户终端来发送预警信息，以降低其他第一用户终端(未被预警的第一用户终端)执行错误操作的几率。

Description

一种交通预警方法、装置及系统 技术领域
本发明属于车辆网技术领域，更具体的说，尤其涉及一种交通预警方法、装置及系统。
背景技术
车辆网技术是近年发展起来的未来5G(第五代移动通信技术)网络核心技术，3GPP(3rd Generation Partnership Project，第三代合作伙伴计划)与2015年对车辆网技术展开了大量研究工作，并给出了车辆网技术的潜在技术场景。在SA技术报告TR22.885中提出了基于路边单元的交通信息广播系统。如图1所示，在图1所示场景下，要求UE(User Equipment，用户终端)主动向RSU(Road Side Unit，路边单元)发送预警信息的能力，RSU接收到预警信息后，向特定的用户终端发送预警广播。
从图1可以看出，预警信息广播无需广播给所有UE，如图针对交叉路口的横向车辆A和车辆B来说，如果这两辆车辆上的UE收到预警信息会造成车辆A和车辆B执行没有必要的错误操作，因此现有系统需要准确识别车辆方位的能力。
发明内容
有鉴于此，本发明提供一种交通预警方法、装置及系统，用于有针对性的向某些第一用户终端发送预警信息，降低其他第一用户终端执行错误操作的几率。技术方案如下：
第一方面，本发明提供一种交通预警方法，所述方法包括：
网络侧设备获得第一用户终端的相对位置，并基于当前得到的相对位置与之前得到的相对位置，得到所述第一用户终端的行驶情况，其中所述相对位置用于指示同一个第一用户终端在不同时刻下相对于第一路边单元的位 置；
所述网络侧设备基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件，如果是向第二路边单元发送预警信息；
所述第二路边单元基于所述第一用户终端的行驶情况确定接收所述预警信息的第二用户终端，并向所述第二用户终端发送所述预警信息，所述预警信息用于触发所述第二用户终端执行与所述预警信息对应的操作。
优选地，所述网络侧设备包括第一路边单元和安全服务器；
所述第一路边单元获得所述第一用户终端的行驶情况，基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件，如果是，向第二路边单元发送预警信息；
或者
所述第一用户终端或第一路边单元获得所述第一用户终端的行驶情况；
所述安全服务器基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件，如果是，向第二路边单元发送预警信息。
优选地，所述第一路边单元或安全服务器基于所述第一用户终端的行驶情况确定所述第二路边单元。
优选地，所述第一用户终端或网络侧设备获得所述第一用户终端的行驶参数，并基于所述行驶参数得到所述行驶情况中的行驶状态。
优选地，所述网络侧设备获得第一用户终端的相对位置，包括：
所述第一路边单元周期性广播发送探测消息，其中所述探测消息中携带有指示所述第一路边单元的信息，所述信息为所述第一路边单元的位置信息或者所述第一路边单元的标识信息；
所述第一用户终端在接收到任意一个第一路边单元广播的探测消息后，将接收到的探测消息中携带的信息反馈至第一路边单元；
所述第一路边单元基于所述第一用户终端反馈的信息确定第一用户终端 的相对位置。
优选地，所述网络侧设备获得第一用户终端的相对位置，包括：
所述第一用户终端周期性广播发送探测消息，其中所述探测消息中携带有所述第一用户终端的标识符；
所述第一路边单元与其他第一路边单元交互各自接收到的第一用户终端的标识符；
所述第一路边单元基于接收到同一个第一用户终端的标识符的第一路边单元的位置来确定第一用户终端的相对位置。
优选地，所述基于当前得到的相对位置与之前得到的相对位置，得到所述第一用户终端的行驶情况，包括：所述第一路边单元将同一个第一用户终端当前得到的相对位置与之前得到的相对位置进行比对，得到所述第一用户终端的行驶方向。
第二方面，本发明提供一种交通预警系统，所述系统包括：第一用户终端、网络侧设备、第二路边单元和第二用户终端；
所述网络侧设备，用于获得第一用户终端的相对位置，基于当前得到的相对位置与之前得到的相对位置，得到所述第一用户终端的行驶情况，并基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件，如果是向第二路边单元发送预警信息，其中所述相对位置用于指示同一个第一用户终端在不同时刻下相对于第一路边单元的位置；
所述第二路边单元，用于基于所述第一用户终端的行驶情况确定接收所述预警信息的第二用户终端，并向所述第二用户终端发送所述预警信息，所述预警信息用于触发所述第二用户终端执行与所述预警信息对应的操作。
优选地，所述网络侧设备包括第一路边单元和安全服务器；
所述第一路边单元获得所述第一用户终端的行驶情况，基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件，如果是，向第二路边单元发送预警信息；
或者
所述第一用户终端或第一路边单元获得所述第一用户终端的行驶情况；
所述安全服务器基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件，如果是，向第二路边单元发送预警信息。
优选地，所述第二路边单元由所述安全服务器或第一路边单元确定。
优选地，所述第一用户终端或网络侧设备获得所述第一用户终端的行驶参数，并基于所述行驶参数得到所述行驶情况中的行驶状态。
第三方面，本发明提供一种交通预警方法，所述方法包括：
获得第一用户终端的相对位置，并基于当前得到的相对位置与之前得到的相对位置，得到所述第一用户终端的行驶情况，其中所述相对位置用于指示同一个第一用户终端在不同时刻下相对于第一路边单元的位置；
基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件；
当所述第一用户终端的行驶情况满足所述交通预警条件时，发送预警信息，所述预警信息用于触发第二用户终端执行与所述预警信息对应的操作，所述第二用户终端基于所述第一用户终端的行驶情况得到。
优选地，所述方法还包括：获得所述第一用户终端的行驶参数，并基于所述行驶参数得到所述行驶情况中的行驶状态。
优选地，所述获得第一用户终端的相对位置，包括：
周期性广播发送探测消息，其中所述探测消息中携带有指示所述第一路边单元的信息，所述信息为所述第一路边单元的位置信息或者所述第一路边单元的标识信息；
接收第一用户终端反馈的第一用户终端接收到的探测消息中携带的信息；
基于所述第一用户终端反馈的信息确定第一用户终端的相对位置。
优选地，所述获得第一用户终端的相对位置，包括：
接收第一用户终端周期性广播发送探测消息，其中所述探测消息中携带 有所述第一用户终端的标识符；
与其他第一路边单元交互各自接收到的第一用户终端的标识符；
基于接收到同一个第一用户终端的标识符的第一路边单元的位置来确定第一用户终端的相对位置。
优选地，所述基于当前得到的相对位置与之前得到的相对位置，得到所述第一用户终端的行驶情况，包括：将同一个第一用户终端当前得到的相对位置与之前得到的相对位置进行比对，得到所述第一用户终端的行驶方向。
第四方面，本发明提供一种交通预警装置，所述装置包括：
获得单元，用于获得第一用户终端的相对位置，并基于当前得到的相对位置与之前得到的相对位置，得到所述第一用户终端的行驶情况，其中所述相对位置用于指示同一个第一用户终端在不同时刻下相对于第一路边单元的位置；
判断单元，用于基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件；
发送单元，用于当所述第一用户终端的行驶情况满足所述交通预警条件时，发送预警信息，所述预警信息用于触发第二用户终端执行与所述预警信息对应的操作，所述第二用户终端基于所述第一用户终端的行驶情况得到。
优选地，所述获得单元，用于获得所述第一用户终端的行驶参数，并基于所述行驶参数得到所述行驶情况中的行驶状态。
优选地，所述获得单元，用于周期性广播发送探测消息，接收第一用户终端反馈的第一用户终端接收到的探测消息中携带的信息；基于所述第一用户终端反馈的信息确定第一用户终端的相对位置，其中所述探测消息中携带有指示所述第一路边单元的信息，所述信息为所述第一路边单元的位置信息或者所述第一路边单元的标识信息；
或者
所述获得单元，用于接收第一用户终端周期性广播发送探测消息，并与其他第一路边单元交互各自接收到的第一用户终端的标识符，基于接收到同 一个第一用户终端的标识符的第一路边单元的位置来确定第一用户终端的相对位置，其中所述探测消息中携带有所述第一用户终端的标识符。
优选地，所述获得单元，用于将同一个第一用户终端当前得到的相对位置与之前得到的相对位置进行比对，得到所述第一用户终端的行驶方向。
与现有技术相比，本发明提供的上述技术方案具有如下优点：
本发明提供的上述技术方案中，可以至少基于第一用户终端的行驶情况来得到第二用户终端，这样在需要发送预警信息的情况下，可以将预警信息仅发送至第二用户终端，使得其他第一用户终端不再接收预警信息，这样其他未接收到预警信息的第一用户终端则可以执行相对应的操作，降低其他第一用户终端执行错误操作的几率，也就是说本发明提供的上述技术方案可以有针对性的仅向第二用户终端来发送预警信息，以降低其他第一用户终端(未被预警的第一用户终端)执行错误操作的几率。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是现有基于路边单元的交通信息广播系统的示意图；
图2是本发明实施例提供的交通预警方法的一种流程图；
图3是本发明实施例提供的一种交通场景的示意图；
图4是本发明实施例提供的交通预警方法中得到第一用户终端的行驶情况的一种流程图；
图5是本发明实施例提供的交通预警方法中得到第一用户终端的行驶情况的另一种流程图；
图6是本发明实施例提供的交通预警系统的结构示意图；
图7是本发明实施例提供的另一种交通预警方法的流程图；
图8是本发明实施例提供的交通预警装置的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图2，其示出了本发明实施例提供的交通预警方法的信令交互图，可以包括以下步骤：
101：网络侧设备获得第一用户终端的相对位置，并基于当前得到的相对位置与之前得到的相对位置，得到第一用户终端的行驶情况，其中相对位置用于指示同一个第一用户终端在不同时刻下相对于第一路边单元的位置。
在本发明实施例中，第一用户终端的行驶情况用于指示第一用户终端所在对象在道路上行驶的情况，例如指示第一用户终端所在车辆在道路上的行驶方向和行驶状态(处于加速状态还是减速状态)。其中第一用户终端的行驶情况至少包括第一用户终端的相对位置和第一用户终端的行驶方向，相对位置可以由网络侧设备通过定位技术来得到，或者可以基于网络侧设备发送的探测消息的发送时间与第一用户终端得到探测消息的接收时间的差值来计算，行驶方向则是由网络侧设备将当前得到的相对位置与之前得到的相对位置进行比对后得到。
除相对位置和行驶方向之外，行驶情况还可以包括其他信息，如行驶状态，所述行驶状态至少用于指示第一用户终端处于加速状态还是减速状态，在本发明实施例中行驶状态可以基于第一用户终端的行驶参数获得。其中行驶参数至少包括：行驶速度和加速度，所述行驶速度可以由安装在第一用户终端中的速度传感器得到，所述加速度则可以由安装在第一用户终端中的加速度传感器得到。基于行驶速度和加速度，尤其是加速度可以判断出当前第一用户终端所在对象处于加速状态还是减速状态。当然，除行驶速度和加速度来得到第一用户终端的行驶状态之外，还可以进一步基于第一用户终端所 在车辆的刹车指示信息来得到，具体本发明实施例不再进行阐述。
102：网络侧设备基于第一用户终端的行驶情况，判断第一用户终端的行驶情况是否满足交通预警条件，如果是向第二路边单元发送预警信息。
由于第一用户终端的行驶情况用于指示第一用户终端所在对象在道路上行驶的情况，所以可以基于第一用户终端的行驶情况来判断是否满足交通预警条件，即判断第一用户终端所在对象是否正在处于违法行驶中。
例如基于行驶情况中的行驶方向和相对位置可以得到第一用户终端所在对象正朝哪个方向行驶，那么其有可能会与行驶方向冲突的对象发生碰撞，因此基于行驶方向和相对位置可以判断第一用户终端的行驶情况是否满足交通预警条件。如图1所示应用场景，行人佩戴的第一用户终端获得的行驶情况指示行人正在穿越马路，而且交通信息表明行人是违法穿红灯，这样经过行人所在路口的车辆可能会与其发生碰撞，此时则可以判断第一用户终端的行驶情况满足交通预警条件。
并且为了提高判断准确度，本发明实施例在行驶方向和相对位置上结合行驶状态来评估第一用户终端所在对象多久通过路口，是处于加速状态还是减速状态，这样网络侧设备则可以基于此来判断是否满足交通预警条件来发送预警信息。网络侧设备还可以进一步结合交通信息来判断是否满足交通预警条件，如在得到第一用户终端的行驶情况后，结合当前路口的交通灯是红灯绿灯来判断是否满足交通预警条件，如果第一用户终端所在对象的相对位置指示车辆或者行人处于路口范围内，正处于加速状态向路口方向移动，并且目前路口的交通灯是红灯，则说明车辆或者行人要闯红灯穿越，因此此时可以判断满足交通预警条件，发送预警信息以指示其他车辆注意违规穿越的行为。
在本发明实施例中，网络侧设备至少包括第一路边单元和安全服务器，第一路边单元和安全服务器的工作过程可以有以下几种方式，在实际应用过程中，其可以选用任意一种方式来执行：
一种方式是第一路边单元获得第一用户终端的行驶情况，并判断第一用 户终端的行驶情况是否满足交通预警条件，如果是第一路边单元基于第一用户终端的行驶情况确定第二路边单元，将预警信息发送给第二路边单元；
另一种方式是：第一路边单元获得第一用户终端的行驶情况，并判断第一用户终端的行驶情况是否满足交通预警条件，如果是，将所述第一用户终端的行驶情况发送给安全服务器。安全服务器基于第一用户终端的行驶情况确定第二路边单元，并将预警信息发送给第二路边单元；
再一种方式是：第一路边单元获得第一用户终端的行驶情况，判断第一用户终端的行驶情况是否满足交通预警条件，如果是第一路边单元基于第一用户终端的行驶情况确定第二路边单元，并触发安全服务器将预警信息发送给第二路边单元；
其他方式是：第一路边单元将获得第一用户终端的行驶情况所需信息，如接收功率等发送给安全服务器，由安全服务器获得第一用户终端的行驶情况，判断第一用户终端的行驶情况是否满足交通预警条件，如果是安全服务器基于第一用户终端的行驶情况确定第二路边单元，并将预警信息发送给第二路边单元。
上述第二路边单元是用于向其他可能会和正在违规的车辆或行人发生事故的第一用户终端发送预警信息的第一路边单元。在本发明实施例中，获得第二路边单元的方式可以是：第一路边单元或者安全服务器根据预警用户终端的相对位置来获得第二用户终端所在位置，然后基于各个第一路边单元的位置信息来获得第二用户终端所属的第一路边单元，这样第二用户终端所属的第一路边单元即是第二路边单元。其中预警用户终端是上述满足交通预警条件的第一用户终端，第二用户终端所属的第一路边单元则是信号范围覆盖第二用户终端的第一路边单元。
当第二用户终端所属的第一路边单元包括多个时，可以选取任意一个第一路边单元为第二路边单元；当然也有可能判断出需要发送预警信息的第一路边单元和需要向第二用户终端发送预警信息的第二路边单元为同一个第一路边单元，在此种情况下，如果是由安全服务器得到第二路边单元，则安全 服务器会将预警信息回传给第一路边单元，如果是由第一路边单元得到第二路边单元，则可以由第一路边单元直接向第二用户终端发送预警信息。
103：第二路边单元基于第一用户终端的行驶情况确定接收预警信息的第二用户终端，并向第二用户终端发送所述预警信息，预警信息用于触发第二用户终端执行与预警信息对应的操作。
在本发明实施例中，第二路边单元可以基于相对位置和行驶方向来得到第一用户终端的大概范围，如位于哪个路口，以及第二路边单元还可以基于行驶速度和加速度确定第一用户终端所在车辆或者行人通过路口的时间和速度，这样与第一用户终端具有行驶冲突的第一用户终端则是第二用户终端。如图1中第一路边单元检测出行人存在违法穿越行为，则车辆D和车辆E中的第一用户终端为第二用户终端。此时第二路边单元将预警信息发送给第二用户终端，此时第二用户终端则会发出预警警报，使驾驶员停车让行。其中预警警报可以声音报警，震动报警或其他任何提示方式。
从上述技术方案可知，本发明提供的交通预警方法可以至少基于第一用户终端的行驶情况来得到第二用户终端，这样在需要发送预警信息的情况下，可以将预警信息仅发送至第二用户终端，使得其他第一用户终端不再接收预警信息，这样其他未接收到预警信息的第一用户终端则可以执行相对应的操作，降低其他第一用户终端执行错误操作的几率，也就是说本发明提供的上述技术方案可以有针对性的仅向第二用户终端来发送预警信息，以降低其他第一用户终端(未被预警的第一用户终端)执行错误操作的几率。
下面以图3所示交通场景示意图，对上述网络侧设备得到第一用户终端的行驶情况进行说明，其中图3中网络侧设备包括多个第一路边单元和安全服务器，其流程图如图4所示，可以包括以下步骤：
201：第一路边单元周期性广播发送探测消息，其中探测消息中携带有指示第一路边单元的信息，所述信息为第一路边单元的位置信息或者第一路边单元的标识信息，标识信息用于将车辆网中的不同第一路边单元进行区分。
202：第一用户终端在接收到任意一个第一路边单元广播的探测消息后，将接收到的探测消息中携带的信息反馈至第一路边单元。
203：第一路边单元基于第一用户终端反馈的信息确定第一用户终端的相对位置。
在本发明实施例中，上述第一路边单元的位置信息或者第一路边单元的标识信息可以指示任意一个第一路边单元，因此当第一路边单元接收到第一用户终端反馈的信息后，可以确定反馈的信息属于哪个第一路边单元，从而确定第一用户终端的相对位置。
例如图3中第一用户终端反馈RSU3-2和RSU3-1的信息，但未反馈RSU1-1的信息，则说明第一用户终端处在RSU3-1和RSU3-2的覆盖交叉区域。当然，在本发明实施例中还可以根据接收功率或者时间差来更精确的判断第一用户终端的相对位置，如在第一用户终端处在RSU3-1和RSU3-2的覆盖交叉区域，通过接收功率或时间差来判断第一用户终端距离RSU3-1近还是距离RSU3-2近。
以接收功率为例，当RSU3-1对应的接收功率大于RSU3-2对应的接收功率时，说明RSU3-1和RSU3-2发送的探测消息更快的被第一用户终端接收到，则进一步说明第一用户终端距离RSU3-1近。
204：第一路边单元将同一个第一用户终端当前得到的相对位置与之前得到的相对位置进行比对，得到第一用户终端的行驶方向。比如第一用户终端的相对位置从处在RSU3-1和RSU3-2的覆盖交叉区域变更为处在RSU3-2的覆盖区域，则说明第一用户终端的行驶方向为驶离交叉路口方向。如果通过相邻两次的相对位置比较无法得到第一用户终端的行驶方向，则可以将当前得到的相对位置与之前得到的多个相对位位置进行比对以得到第一用户终端的行驶方向。
如图5所示，其示出了网络侧设备得到第一用户终端的行驶情况的另一种方式，可以包括以下步骤：
301：第一用户终端周期性广播发送探测消息，其中探测消息中携带有第 一用户终端的标识符，这样若第一路边单元可以接收到探测消息，则说明第一用户终端位于第一路边单元的覆盖区域内。
302：第一路边单元与其他第一路边单元交互各自接收到的第一用户终端的标识符。
303：第一路边单元基于接收到同一个第一用户终端的标识符的第一路边单元的位置来确定第一用户终端的相对位置。
之所以第一路边单元之间交互接收到的第一用户终端的标识符是为了第一路边单元可以获得同一个第一用户终端的标识符被哪些第一路边单元获得，进而第一路边单元可以基于同一个第一用户终端的标识符的第一路边单元的位置来确定第一用户终端的相对位置。
例如图3中，RSU3-2和RSU3-1均可以接收到同一个第一用户终端的标识符，则第一路边单元可以确定RSU3-1和RSU3-2的覆盖交叉区域。当然，在本发明实施例中还可以根据接收功率或者时间差来更精确的判断第一用户终端的相对位置，如在第一用户终端处在RSU3-1和RSU3-2的覆盖交叉区域，通过接收功率或时间差来判断第一用户终端距离RSU3-1近还是距离RSU3-2近。
以接收功率为例，当RSU3-1对应的接收功率大于RSU3-2对应的接收功率时，说明RSU3-1和RSU3-2发送的探测消息更快的被第一用户终端接收到，则进一步说明第一用户终端距离RSU3-1近。
304：第一路边单元将同一个第一用户终端当前得到的相对位置与之前得到的相对位置进行比对，得到第一用户终端的行驶方向。比如第一用户终端的相对位置从处在RSU3-1和RSU3-2的覆盖交叉区域变更为处在RSU3-2的覆盖区域，则说明第一用户终端的行驶方向为驶离交叉路口方向。如果通过相邻两次的相对位置比较无法得到第一用户终端的行驶方向，则可以将当前得到的相对位置与之前得到的多个相对位位置进行比对以得到第一用户终端的行驶方向。
从上述图4和图5所示技术方案可知，本发明实施例可以基于第一路边 单元或者第一用户终端来定位第一用户终端的相对位置，并基于第一用户终端的相对位置来定位第一用户终端的行驶方向，相对于GPS(Global Positioning System，全球定位系统)定位技术来说更为简单，且定位精度不受第一用户终端之间距离的影响，从而提高定位精度，降低误触发的几率。
与上述图1所示方法实施例相对应，本发明实施例还提供一种交通预警系统，如图6所示，可以包括：第一用户终端11、网络侧设备12、第二路边单元13和第二用户终端14。
其中，网络侧设备12，用于获得第一用户终端的相对位置，基于当前得到的相对位置与之前得到的相对位置，得到所述第一用户终端的行驶情况，并基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件，如果是向第二路边单元发送预警信息，其中所述相对位置用于指示同一个第一用户终端在不同时刻下相对于第一路边单元的位置。
在本发明实施例中，第一用户终端的行驶情况用于指示第一用户终端所在对象在道路上行驶的情况，例如指示第一用户终端所在车辆在道路上的行驶方向和行驶状态(处于加速状态还是减速状态)。其中第一用户终端的行驶情况至少包括第一用户终端的相对位置和第一用户终端的行驶方向，相对位置可以由网络侧设备通过定位技术来得到，或者可以基于网络侧设备发送的探测消息的发送时间与第一用户终端得到探测消息的接收时间的差值来计算，行驶方向则是由网络侧设备将当前得到的相对位置与之前得到的相对位置进行比对后得到，具体可以参阅上述图4和图5所示流程图。
除相对位置和行驶方向之外，行驶情况还可以包括其他信息，如行驶状态，所述行驶状态至少用于指示第一用户终端处于加速状态还是减速状态，在本发明实施例中行驶状态可以基于第一用户终端的行驶参数获得。其中行驶参数至少包括：行驶速度和加速度，所述行驶速度可以由安装在第一用户终端中的速度传感器得到，所述加速度则可以由安装在第一用户终端中的加 速度传感器得到。基于行驶速度和加速度，尤其是加速度可以判断出当前第一用户终端所在对象处于加速状态还是减速状态。当然，除行驶速度和加速度来得到第一用户终端的行驶状态之外，还可以进一步基于第一用户终端所在车辆的刹车指示信息来得到，具体本发明实施例不再进行阐述。
由于第一用户终端的行驶情况用于指示第一用户终端所在对象在道路上行驶的情况，所以可以基于第一用户终端的行驶情况来判断是否满足交通预警条件，即判断第一用户终端所在对象是否正在处于违法行驶中。
例如基于行驶情况中的行驶方向和相对位置可以得到第一用户终端所在对象正朝哪个方向行驶，那么其有可能会与行驶方向冲突的对象发生碰撞，因此基于行驶方向和相对位置可以判断第一用户终端的行驶情况是否满足交通预警条件。如图1所示应用场景，行人佩戴的第一用户终端获得的行驶情况指示行人正在穿越马路，而且交通信息表明行人是违法穿红灯，这样经过行人所在路口的车辆可能会与其发生碰撞，此时则可以判断第一用户终端的行驶情况满足交通预警条件。
并且为了提高判断准确度，本发明实施例在行驶方向和相对位置上结合行驶状态来评估第一用户终端所在对象多久通过路口，是处于加速状态还是减速状态，这样网络侧设备则可以基于此来判断是否满足交通预警条件来发送预警信息。网络侧设备还可以进一步结合交通信息来判断是否满足交通预警条件，如在得到第一用户终端的行驶情况后，结合当前路口的交通灯是红灯绿灯来判断是否满足交通预警条件，如果第一用户终端所在对象的相对位置指示车辆或者行人处于路口范围内，正处于加速状态向路口方向移动，并且目前路口的交通灯是红灯，则说明车辆或者行人要闯红灯穿越，因此此时可以判断满足交通预警条件，发送预警信息以指示其他车辆注意违规穿越的行为。
在本发明实施例中，网络侧设备至少包括第一路边单元和安全服务器，第一路边单元和安全服务器的工作过程可以有以下几种方式，在实际应用过程中，其可以选用任意一种方式来执行：
一种方式是第一路边单元获得第一用户终端的行驶情况，并判断第一用户终端的行驶情况是否满足交通预警条件，如果是第一路边单元基于第一用户终端的行驶情况确定第二路边单元，将预警信息发送给第二路边单元；
另一种方式是：第一路边单元获得第一用户终端的行驶情况，并判断第一用户终端的行驶情况是否满足交通预警条件，如果是，将所述第一用户终端的行驶情况发送给安全服务器。安全服务器基于第一用户终端的行驶情况确定第二路边单元，并将预警信息发送给第二路边单元；
再一种方式是：第一路边单元获得第一用户终端的行驶情况，判断第一用户终端的行驶情况是否满足交通预警条件，如果是第一路边单元基于第一用户终端的行驶情况确定第二路边单元，并触发安全服务器将预警信息发送给第二路边单元；
其他方式是：第一路边单元将获得第一用户终端的行驶情况所需信息，如接收功率等发送给安全服务器，由安全服务器获得第一用户终端的行驶情况，判断第一用户终端的行驶情况是否满足交通预警条件，如果是安全服务器基于第一用户终端的行驶情况确定第二路边单元，并将预警信息发送给第二路边单元。
上述第二路边单元是用于向其他可能会和正在违规的车辆或行人发生事故的第一用户终端发送预警信息的第一路边单元。在本发明实施例中，获得第二路边单元的方式可以是：第一路边单元或者安全服务器根据预警用户终端的相对位置来获得第二用户终端所在位置，然后基于各个第一路边单元的位置信息来获得第二用户终端所属的第一路边单元，这样第二用户终端所属的第一路边单元即是第二路边单元。其中预警用户终端是上述满足交通预警条件的第一用户终端，第二用户终端所属的第一路边单元则是信号范围覆盖第二用户终端的第一路边单元。
当第二用户终端所属的第一路边单元包括多个时，可以选取任意一个第一路边单元为第二路边单元；当然也有可能判断出需要发送预警信息的第一路边单元和需要向第二用户终端发送预警信息的第二路边单元为同一个第一 路边单元，在此种情况下，如果是由安全服务器得到第二路边单元，则安全服务器会将预警信息回传给第一路边单元，如果是由第一路边单元得到第二路边单元，则可以由第一路边单元直接向第二用户终端发送预警信息。
第二路边单元13，用于基于所述第一用户终端的行驶情况确定接收所述预警信息的第二用户终端，并向所述第二用户终端发送所述预警信息，所述预警信息用于触发所述第二用户终端执行与所述预警信息对应的操作。
在本发明实施例中，第二路边单元可以基于相对位置和行驶方向来得到第一用户终端的大概范围，如位于哪个路口，以及第二路边单元还可以基于行驶速度和加速度确定第一用户终端所在车辆或者行人通过路口的时间和速度，这样与第一用户终端具有行驶冲突的第一用户终端则是第二用户终端。如图1中第一路边单元检测出行人存在违法穿越行为，则车辆D和车辆E中的第一用户终端为第二用户终端。此时第二路边单元将预警信息发送给第二用户终端，此时第二用户终端则会发出预警警报，使驾驶员停车让行。其中预警警报可以声音报警，震动报警或其他任何提示方式。
从上述技术方案可知，本发明提供的交通预警系统可以至少基于第一用户终端的行驶情况来得到第二用户终端，这样在需要发送预警信息的情况下，可以将预警信息仅发送至第二用户终端，使得其他第一用户终端不再接收预警信息，这样其他未接收到预警信息的第一用户终端则可以执行相对应的操作，降低其他第一用户终端执行错误操作的几率，也就是说本发明提供的上述技术方案可以有针对性的仅向第二用户终端来发送预警信息，以降低其他第一用户终端(未被预警的第一用户终端)执行错误操作的几率。
请参阅图7，其示出了本发明实施例提供的另一种交通预警方法的流程图，可以包括以下步骤：
701：获得第一用户终端的相对位置，并基于当前得到的相对位置与之前得到的相对位置，得到第一用户终端的行驶情况，其中相对位置用于指示同一个第一用户终端在不同时刻下相对于第一路边单元的位置。
在本发明实施例中，第一用户终端的行驶情况用于指示第一用户终端所在对象在道路上行驶的情况，例如指示第一用户终端所在车辆在道路上的行驶方向和行驶状态(处于加速状态还是减速状态)。其中第一用户终端的行驶情况至少包括第一用户终端的相对位置和第一用户终端的行驶方向，相对位置可以由网络侧设备通过定位技术来得到，或者可以基于网络侧设备发送的探测消息的发送时间与第一用户终端得到探测消息的接收时间的差值来计算，行驶方向则是由网络侧设备将当前得到的相对位置与之前得到的相对位置进行比对后得到，具体可以参阅上述图4和图5所示流程图。
除相对位置和行驶方向之外，行驶情况还可以包括其他信息，如行驶状态，所述行驶状态至少用于指示第一用户终端处于加速状态还是减速状态，在本发明实施例中行驶状态可以基于第一用户终端的行驶参数获得。其中行驶参数至少包括：行驶速度和加速度，所述行驶速度可以由安装在第一用户终端中的速度传感器得到，所述加速度则可以由安装在第一用户终端中的加速度传感器得到。基于行驶速度和加速度，尤其是加速度可以判断出当前第一用户终端所在对象处于加速状态还是减速状态。当然，除行驶速度和加速度来得到第一用户终端的行驶状态之外，还可以进一步基于第一用户终端所在车辆的刹车指示信息来得到，具体本发明实施例不再进行阐述。
702：基于第一用户终端的行驶情况，判断第一用户终端的行驶情况是否满足交通预警条件。由于第一用户终端的行驶情况用于指示第一用户终端所在对象在道路上行驶的情况，所以可以基于第一用户终端的行驶情况来判断是否满足交通预警条件，即判断第一用户终端所在对象是否正在处于违法行驶中。
例如基于行驶情况中的行驶方向和相对位置可以得到第一用户终端所在对象正朝哪个方向行驶，那么其有可能会与行驶方向冲突的对象发生碰撞，因此基于行驶方向和相对位置可以判断第一用户终端的行驶情况是否满足交通预警条件。如图1所示应用场景，行人佩戴的第一用户终端获得的行驶情况指示行人正在穿越马路，而且交通信息表明行人是违法穿红灯，这样经过 行人所在路口的车辆可能会与其发生碰撞，此时则可以判断第一用户终端的行驶情况满足交通预警条件。
并且为了提高判断准确度，本发明实施例在行驶方向和相对位置上结合行驶状态来评估第一用户终端所在对象多久通过路口，是处于加速状态还是减速状态，这样网络侧设备则可以基于此来判断是否满足交通预警条件来发送预警信息。网络侧设备还可以进一步结合交通信息来判断是否满足交通预警条件，如在得到第一用户终端的行驶情况后，结合当前路口的交通灯是红灯绿灯来判断是否满足交通预警条件，如果第一用户终端所在对象的相对位置指示车辆或者行人处于路口范围内，正处于加速状态向路口方向移动，并且目前路口的交通灯是红灯，则说明车辆或者行人要闯红灯穿越，因此此时可以判断满足交通预警条件，发送预警信息以指示其他车辆注意违规穿越的行为。
上述第二路边单元是用于向其他可能会和正在违规的车辆或行人发生事故的第一用户终端发送预警信息的第一路边单元。在本发明实施例中，获得第二路边单元的方式可以是：第一路边单元或者安全服务器根据预警用户终端的相对位置来获得第二用户终端所在位置，然后基于各个第一路边单元的位置信息来获得第二用户终端所属的第一路边单元，这样第二用户终端所属的第一路边单元即是第二路边单元。其中预警用户终端是上述满足交通预警条件的第一用户终端，第二用户终端所属的第一路边单元则是信号范围覆盖第二用户终端的第一路边单元。
当第二用户终端所属的第一路边单元包括多个时，可以选取任意一个第一路边单元为第二路边单元；当然也有可能判断出需要发送预警信息的第一路边单元和需要向第二用户终端发送预警信息的第二路边单元为同一个第一路边单元，在此种情况下，如果是由安全服务器得到第二路边单元，则安全服务器会将预警信息回传给第一路边单元，如果是由第一路边单元得到第二路边单元，则可以由第一路边单元直接向第二用户终端发送预警信息。
703：当第一用户终端的行驶情况满足交通预警条件时，发送预警信息， 预警信息用于触发第二用户终端执行与预警信息对应的操作，第二用户终端基于第一用户终端的行驶情况得到。
在本发明实施例中，可以基于相对位置和行驶方向来得到第一用户终端的大概范围，如位于哪个路口，以及还可以基于行驶速度和加速度确定第一用户终端所在车辆或者行人通过路口的时间和速度，这样与第一用户终端具有行驶冲突的第一用户终端则是第二用户终端。如图1中第一路边单元检测出行人存在违法穿越行为，则车辆D和车辆E中的第一用户终端为第二用户终端。此时第二路边单元将预警信息发送给第二用户终端，此时第二用户终端则会发出预警警报，使驾驶员停车让行。其中预警警报可以声音报警，震动报警或其他任何提示方式。
从上述技术方案可知，本发明提供的交通预警方法可以至少基于第一用户终端的行驶情况来得到第二用户终端，这样在需要发送预警信息的情况下，可以将预警信息仅发送至第二用户终端，使得其他第一用户终端不再接收预警信息，这样其他未接收到预警信息的第一用户终端则可以执行相对应的操作，降低其他第一用户终端执行错误操作的几率，也就是说本发明提供的上述技术方案可以有针对性的仅向第二用户终端来发送预警信息，以降低其他第一用户终端(未被预警的第一用户终端)执行错误操作的几率。
与上述图7所示方法实施例相对应，本发明实施例还提供一种交通预警装置，其结构示意图如图8所示，可以包括：获得单元20、判断单元21和发送单元22。
获得单元20，用于获得第一用户终端的相对位置，并基于当前得到的相对位置与之前得到的相对位置，得到第一用户终端的行驶情况，其中相对位置用于指示同一个第一用户终端在不同时刻下相对于第一路边单元的位置。
在本发明实施例中，获得单元20可以周期性广播发送探测消息，接收第一用户终端反馈的第一用户终端接收到的探测消息中携带的信息；基于第一用户终端反馈的信息确定第一用户终端的相对位置，这样获得单元20可以将 同一个第一用户终端当前得到的相对位置与之前得到的相对位置进行比对，得到第一用户终端的行驶方向。其中探测消息中携带有指示第一路边单元的信息，信息为第一路边单元的位置信息或者第一路边单元的标识信息。
又或者
获得单元20接收第一用户终端周期性广播发送探测消息，并与其他第一路边单元交互各自接收到的第一用户终端的标识符，基于接收到同一个第一用户终端的标识符的第一路边单元的位置来确定第一用户终端的相对位置，使得获得单元20同样可以将同一个第一用户终端当前得到的相对位置与之前得到的相对位置进行比对，得到第一用户终端的行驶方向，其中所述探测消息中携带有所述第一用户终端的标识符。
上述获得单元20获得第一用户终端的行驶方向的具体过程可以参阅图4和图5所示流程图，对此不再详细阐述。
除相对位置和行驶方向之外，行驶情况还可以包括其他信息，如行驶状态，所述行驶状态至少用于指示第一用户终端处于加速状态还是减速状态，在本发明实施例中行驶状态可以获得单元20基于第一用户终端的行驶参数获得。其中行驶参数至少包括：行驶速度和加速度，所述行驶速度可以由安装在第一用户终端中的速度传感器得到，所述加速度则可以由安装在第一用户终端中的加速度传感器得到。基于行驶速度和加速度，尤其是加速度可以判断出当前第一用户终端所在对象处于加速状态还是减速状态。当然，除行驶速度和加速度来得到第一用户终端的行驶状态之外，还可以进一步基于第一用户终端所在车辆的刹车指示信息来得到，具体本发明实施例不再进行阐述。
判断单元21，用于基于第一用户终端的行驶情况，判断第一用户终端的行驶情况是否满足交通预警条件。由于第一用户终端的行驶情况用于指示第一用户终端所在对象在道路上行驶的情况，所以可以基于第一用户终端的行驶情况来判断是否满足交通预警条件，即判断第一用户终端所在对象是否正在处于违法行驶中，具体判断过程可以参阅上述方法实施例的相关说明，对此本发明实施例不再阐述。
发送单元22，用于当第一用户终端的行驶情况满足交通预警条件时，发送预警信息，预警信息用于触发第二用户终端执行与预警信息对应的操作，第二用户终端基于第一用户终端的行驶情况得到。
其中第二用户终端为可能与与第一用户终端具有行驶冲突的第一用户终端，如上述图1中第一路边单元检测出行人存在违法穿越行为，则车辆D和车辆E中的第一用户终端为第二用户终端。此时第二用户终端则会发出预警警报，使驾驶员停车让行。其中预警警报可以声音报警，震动报警或其他任何提示方式。
在此需要说明一点：上述实施例中的探测消息可以采用D2D discovery(终端直通探测)技术中的消息，如D2D discovery message(D2D探测消息)或者D2D communication message(D2D通信消息)，同样的第一用户终端向第一路边单元上传的各种信息也可以携带与反馈消息中上传，其中反馈消息也可以采用D2D discovery技术中的消息，如D2D discovery message或者D2D communication message。
本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。对于装置类实施例而言，由于其与方法实施例基本相似，所以描述的比较简单，相关之处参见方法实施例的部分说明即可。
最后，还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
对所公开的实施例的上述说明，使本领域技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (18)

  1. 一种交通预警方法，其特征在于，所述方法包括：
    网络侧设备获得第一用户终端的相对位置，并基于当前得到的相对位置与之前得到的相对位置，得到所述第一用户终端的行驶情况，其中所述相对位置用于指示同一个第一用户终端在不同时刻下相对于第一路边单元的位置；
    所述网络侧设备基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件，如果是向第二路边单元发送预警信息；
    所述第二路边单元基于所述第一用户终端的行驶情况确定接收所述预警信息的第二用户终端，并向所述第二用户终端发送所述预警信息，所述预警信息用于触发所述第二用户终端执行与所述预警信息对应的操作。
  2. 根据权利要求1所述的方法，其特征在于，所述网络侧设备包括第一路边单元和安全服务器；
    所述第一路边单元获得所述第一用户终端的行驶情况，基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件，如果是，向第二路边单元发送预警信息；
    或者
    所述第一用户终端或第一路边单元获得所述第一用户终端的行驶情况；
    所述安全服务器基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件，如果是，向第二路边单元发送预警信息。
  3. 根据权利要求1所述的方法，其特征在于，所述第一用户终端或网络侧设备获得所述第一用户终端的行驶参数，并基于所述行驶参数得到所述行驶情况中的行驶状态。
  4. 根据权利要求1所述的方法，其特征在于，所述网络侧设备获得第一用户终端的相对位置，包括：
    所述第一路边单元周期性广播发送探测消息，其中所述探测消息中携带 有指示所述第一路边单元的信息，所述信息为所述第一路边单元的位置信息或者所述第一路边单元的标识信息；
    所述第一用户终端在接收到任意一个第一路边单元广播的探测消息后，将接收到的探测消息中携带的信息反馈至第一路边单元；
    所述第一路边单元基于所述第一用户终端反馈的信息确定第一用户终端的相对位置。
  5. 根据权利要求1所述的方法，其特征在于，所述网络侧设备获得第一用户终端的相对位置，包括：
    所述第一用户终端周期性广播发送探测消息，其中所述探测消息中携带有所述第一用户终端的标识符；
    所述第一路边单元与其他第一路边单元交互各自接收到的第一用户终端的标识符；
    所述第一路边单元基于接收到同一个第一用户终端的标识符的第一路边单元的位置来确定第一用户终端的相对位置。
  6. 根据权利要求4或5所述的方法，其特征在于，所述基于当前得到的相对位置与之前得到的相对位置，得到所述第一用户终端的行驶情况，包括：所述第一路边单元将同一个第一用户终端当前得到的相对位置与之前得到的相对位置进行比对，得到所述第一用户终端的行驶方向。
  7. 一种交通预警系统，其特征在于，所述系统包括：第一用户终端、网络侧设备、第二路边单元和第二用户终端；
    所述网络侧设备，用于获得第一用户终端的相对位置，基于当前得到的相对位置与之前得到的相对位置，得到所述第一用户终端的行驶情况，并基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件，如果是向第二路边单元发送预警信息，其中所述相对位置用于指示同一个第一用户终端在不同时刻下相对于第一路边单元的位置；
    所述第二路边单元，用于基于所述第一用户终端的行驶情况确定接收所述预警信息的第二用户终端，并向所述第二用户终端发送所述预警信息，所 述预警信息用于触发所述第二用户终端执行与所述预警信息对应的操作。
  8. 根据权利要求7所述的系统，其特征在于，所述网络侧设备包括第一路边单元和安全服务器；
    所述第一路边单元获得所述第一用户终端的行驶情况，基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件，如果是，向第二路边单元发送预警信息；
    或者
    所述第一用户终端或第一路边单元获得所述第一用户终端的行驶情况；
    所述安全服务器基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件，如果是，向第二路边单元发送预警信息。
  9. 根据权利要求7所述的系统，其特征在于，所述第一用户终端或网络侧设备获得所述第一用户终端的行驶参数，并基于所述行驶参数得到所述行驶情况中的行驶状态。
  10. 一种交通预警方法，其特征在于，所述方法包括：
    获得第一用户终端的相对位置，并基于当前得到的相对位置与之前得到的相对位置，得到所述第一用户终端的行驶情况，其中所述相对位置用于指示同一个第一用户终端在不同时刻下相对于第一路边单元的位置；
    基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件；
    当所述第一用户终端的行驶情况满足所述交通预警条件时，发送预警信息，所述预警信息用于触发第二用户终端执行与所述预警信息对应的操作，所述第二用户终端基于所述第一用户终端的行驶情况得到。
  11. 根据权利要求10所述的方法，其特征在于，所述方法还包括：获得所述第一用户终端的行驶参数，并基于所述行驶参数得到所述行驶情况中的行驶状态。
  12. 根据权利要求10所述的方法，其特征在于，所述获得第一用户终端 的相对位置，包括：
    周期性广播发送探测消息，其中所述探测消息中携带有指示所述第一路边单元的信息，所述信息为所述第一路边单元的位置信息或者所述第一路边单元的标识信息；
    接收第一用户终端反馈的第一用户终端接收到的探测消息中携带的信息；
    基于所述第一用户终端反馈的信息确定第一用户终端的相对位置。
  13. 根据权利要求10所述的方法，其特征在于，所述获得第一用户终端的相对位置，包括：
    接收第一用户终端周期性广播发送探测消息，其中所述探测消息中携带有所述第一用户终端的标识符；
    与其他第一路边单元交互各自接收到的第一用户终端的标识符；
    基于接收到同一个第一用户终端的标识符的第一路边单元的位置来确定第一用户终端的相对位置。
  14. 根据权利要求12或13所述的方法，其特征在于，所述基于当前得到的相对位置与之前得到的相对位置，得到所述第一用户终端的行驶情况，包括：将同一个第一用户终端当前得到的相对位置与之前得到的相对位置进行比对，得到所述第一用户终端的行驶方向。
  15. 一种交通预警装置，其特征在于，所述装置包括：
    获得单元，用于获得第一用户终端的相对位置，并基于当前得到的相对位置与之前得到的相对位置，得到所述第一用户终端的行驶情况，其中所述相对位置用于指示同一个第一用户终端在不同时刻下相对于第一路边单元的位置；
    判断单元，用于基于所述第一用户终端的行驶情况，判断所述第一用户终端的行驶情况是否满足交通预警条件；
    发送单元，用于当所述第一用户终端的行驶情况满足所述交通预警条件时，发送预警信息，所述预警信息用于触发第二用户终端执行与所述预警信 息对应的操作，所述第二用户终端基于所述第一用户终端的行驶情况得到。
  16. 根据权利要求15所述的装置，其特征在于，所述获得单元，用于获得所述第一用户终端的行驶参数，并基于所述行驶参数得到所述行驶情况中的行驶状态。
  17. 根据权利要求15所述的装置，其特征在于，所述获得单元，用于周期性广播发送探测消息，接收第一用户终端反馈的第一用户终端接收到的探测消息中携带的信息；基于所述第一用户终端反馈的信息确定第一用户终端的相对位置，其中所述探测消息中携带有指示所述第一路边单元的信息，所述信息为所述第一路边单元的位置信息或者所述第一路边单元的标识信息；
    或者
    所述获得单元，用于接收第一用户终端周期性广播发送探测消息，并与其他第一路边单元交互各自接收到的第一用户终端的标识符，基于接收到同一个第一用户终端的标识符的第一路边单元的位置来确定第一用户终端的相对位置，其中所述探测消息中携带有所述第一用户终端的标识符。
  18. 根据权利要求17所述的装置，其特征在于，所述获得单元，用于将同一个第一用户终端当前得到的相对位置与之前得到的相对位置进行比对，得到所述第一用户终端的行驶方向。
PCT/CN2015/093542 2015-09-30 2015-10-31 一种交通预警方法、装置及系统 WO2017054290A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510644292.7 2015-09-30
CN201510644292.7A CN105118330B (zh) 2015-09-30 2015-09-30 一种交通预警方法、装置及系统

Publications (1)

Publication Number Publication Date
WO2017054290A1 true WO2017054290A1 (zh) 2017-04-06

Family

ID=54666296

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/093542 WO2017054290A1 (zh) 2015-09-30 2015-10-31 一种交通预警方法、装置及系统

Country Status (2)

Country Link
CN (1) CN105118330B (zh)
WO (1) WO2017054290A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105096659B (zh) * 2015-09-30 2018-06-15 宇龙计算机通信科技(深圳)有限公司 一种交通预警方法、装置及系统
CN105139691B (zh) * 2015-09-30 2018-11-30 宇龙计算机通信科技(深圳)有限公司 一种交通预警方法、装置及系统
CN106453857B (zh) * 2016-09-23 2020-01-03 珠海格力电器股份有限公司 一种信息提醒的方法和终端

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101645204A (zh) * 2009-07-30 2010-02-10 杨迎春 车辆间避险通信装置及其数据处理方法
WO2011110227A1 (en) * 2010-03-12 2011-09-15 Telefonaktiebolaget Lm Ericsson (Publ) Cellular network based assistant for vehicles
US8175796B1 (en) * 2008-09-25 2012-05-08 The United States Of America As Represented By The Secretary Of The Navy Method for vehicle collision avoidance
CN103903479A (zh) * 2014-04-23 2014-07-02 奇瑞汽车股份有限公司 车辆安全行驶预警方法、系统及车辆终端设备
CN104050837A (zh) * 2014-06-10 2014-09-17 奇瑞汽车股份有限公司 一种行车安全提示方法和装置
CN104794939A (zh) * 2015-04-21 2015-07-22 王红颖 高速行车预警方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5056401B2 (ja) * 2007-12-21 2012-10-24 株式会社Ｊｖｃケンウッド 車載器，出力可否判定方法，道路通信システムおよびプログラム
WO2010043164A1 (zh) * 2008-10-13 2010-04-22 Xu Fei 一种无线交通信息指示方法及系统
CN104590250B (zh) * 2013-10-31 2017-11-10 财团法人车辆研究测试中心 车辆自主辅助驾驶系统与方法
CN103625463B (zh) * 2013-11-29 2016-08-17 浙江吉利控股集团有限公司 一种车辆自动控制制动的方法及装置
CN103778783B (zh) * 2013-12-04 2015-12-30 北京航空航天大学 基于专用短程通信的十字路口非机动车和行人位置检测方法
CN104134360A (zh) * 2014-08-14 2014-11-05 奇瑞汽车股份有限公司 基于短程通信的路口行人识别安全控制系统及方法
CN104537889B (zh) * 2014-12-30 2017-03-01 四川九洲电器集团有限责任公司 一种不同车况下的防撞方法和系统
CN104867356B (zh) * 2015-06-04 2017-05-24 重庆邮电大学 一种基于DSRC和Telematics的车辆威胁评估系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8175796B1 (en) * 2008-09-25 2012-05-08 The United States Of America As Represented By The Secretary Of The Navy Method for vehicle collision avoidance
CN101645204A (zh) * 2009-07-30 2010-02-10 杨迎春 车辆间避险通信装置及其数据处理方法
WO2011110227A1 (en) * 2010-03-12 2011-09-15 Telefonaktiebolaget Lm Ericsson (Publ) Cellular network based assistant for vehicles
CN103903479A (zh) * 2014-04-23 2014-07-02 奇瑞汽车股份有限公司 车辆安全行驶预警方法、系统及车辆终端设备
CN104050837A (zh) * 2014-06-10 2014-09-17 奇瑞汽车股份有限公司 一种行车安全提示方法和装置
CN104794939A (zh) * 2015-04-21 2015-07-22 王红颖 高速行车预警方法

Also Published As

Publication number Publication date
CN105118330A (zh) 2015-12-02
CN105118330B (zh) 2018-11-06

Similar Documents

Publication Publication Date Title
US8954261B2 (en) Autonomous vehicle positioning system for misbehavior detection
CN101916514B (zh) 使用基于v2x的网内消息协议来允许道路危险状况报警
CN107564306B (zh) 交通信息处理及相关设备
US10453342B2 (en) Methods, devices, and computer programs for providing information about a dangerous situation on a vehicle-to-vehicle interface
KR20180043336A (ko) 차량-대-차량 인터페이스를 통해 교통 체증의 종료에 관한 유용한 정보를 생성하는 장치, 방법 및 컴퓨터 프로그램
CN105280005A (zh) 一种道路安全消息的发送方法及装置
CN106683465A (zh) 生成及发送车辆避让提醒的方法、装置
JP2017142588A (ja) 渋滞箇所情報提供のための装置、方法、及びプログラム
CN104269073A (zh) 一种基于车车通信的逆向车道超车预警方法
JP5984154B2 (ja) 運転支援装置
KR20180053385A (ko) 차량-대-차량 인터페이스를 통해 교통 체증 정보를 제공하는 장치, 방법 및 컴퓨터 프로그램
CN110060465B (zh) 一种用于车辆行人交互系统的交互方法及交互系统
WO2017054291A1 (zh) 一种交通预警方法、装置及系统
CN105160941A (zh) 信息提醒方法、信息提醒装置和移动终端
KR20060056370A (ko) 이동 경로를 따른 물품들의 이동성을 판정하는 방법 및시스템
JP2013242737A (ja) 車載装置および車載装置の判断方法
WO2017054290A1 (zh) 一种交通预警方法、装置及系统
KR20130068159A (ko) 보행자 휴대 단말을 이용한 교통사고 방지 방법 및 장치
WO2017054293A1 (zh) 一种交通预警方法、装置及系统
KR20190112973A (ko) 차량 간 통신 환경에서 취약 도로 사용자 보호 방법 및 그를 위한 장치
KR100912096B1 (ko) 횡단보도에서 보행 중인 사용자의 위험 상황을 알리는이동통신 단말과 이동통신 서버의 제어방법
KR101768639B1 (ko) 사고 발생 알림 시스템 및 방법
KR101730153B1 (ko) 비콘 기반의 차량 사고 알림 방법 및 장치
JP2005149231A (ja) 交差点事故防止システム、交差点事故防止装置、交差点事故防止方法、およびプログラム
JP5407321B2 (ja) 車両用の情報提供装置及び情報提供方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15905202

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15905202

Country of ref document: EP

Kind code of ref document: A1