CN116017313A - Broadcasting and control method and device thereof - Google Patents
Broadcasting and control method and device thereof Download PDFInfo
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- CN116017313A CN116017313A CN202211576817.4A CN202211576817A CN116017313A CN 116017313 A CN116017313 A CN 116017313A CN 202211576817 A CN202211576817 A CN 202211576817A CN 116017313 A CN116017313 A CN 116017313A
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Abstract
The application discloses a broadcast and a control method and a control device thereof, which are used for determining a main road side unit and an auxiliary road side unit in the same area according to a signal intensity message sent by the road side unit, so as to avoid the signal interference problem caused by the multipath side units in the same area, and further improve the V2X communication efficiency. The broadcasting method provided by the application comprises the following steps: receiving a notification of a local road side unit as a main road side unit or an auxiliary road side unit; and according to the notification, when the local road side unit is determined to be the main road side unit, continuously maintaining the broadcasting road condition information, and transmitting the broadcasting road condition information to the auxiliary road side unit in the local area, wherein the auxiliary road side unit stops actively broadcasting the road condition information, and receives and broadcasts the road condition information transmitted by the main road side unit.
Description
Technical Field
The application relates to the technical field of internet of vehicles, in particular to a broadcast and a control method and device thereof.
Background
In the field of internet of vehicles, road side unit RSU equipment is responsible for broadcasting traffic information processed by mobile edge calculation MEC (Mobile Edge Computing), annunciators and the like to vehicle-mounted unit OBU (On Board Unit) equipment of surrounding vehicles, and is used for reminding nearby vehicles of safe driving, for example, vehicles in a certain lane fail and cannot move, and RSU (Rode Side Unit) equipment can remind other vehicles in the same-direction lane to pay attention to avoid through a V2X (Vehicle to X) message. In order to ensure that traffic information is accurately and timely pushed to surrounding vehicles, the RSU equipment generally adopts a high-power omni-directional antenna to perform broadcast transmission, and can cover 500-1000M at maximum. Therefore, when a plurality of Road Side Unit (RSU) devices exist at a certain intersection, the signal overlapping area is increased due to the omni-directional blind supplement of the RSU devices, and wireless signals are mutually interfered, so that the V2X communication efficiency is low.
Disclosure of Invention
The embodiment of the application provides a broadcasting and control method and device thereof, which are used for determining a main road side unit and an auxiliary road side unit in the same area according to a signal intensity message sent by a road side unit, so that the signal interference problem caused by a plurality of paths of the road side units in the same area is avoided, and the V2X communication efficiency is further improved.
The embodiment of the application provides a broadcasting method, which comprises the following steps:
receiving a notification of a local road side unit as a main road side unit or an auxiliary road side unit;
and according to the notification, when the local road side unit is determined to be the main road side unit, continuously maintaining the broadcasting road condition information, and transmitting the broadcasting road condition information to the auxiliary road side unit in the local area, wherein the auxiliary road side unit stops actively broadcasting the road condition information, and receives and broadcasts the road condition information transmitted by the main road side unit.
Receiving a notification of a local road side unit as a main road side unit or a secondary road side unit by the method; according to the notification, when the local road side unit is determined to be the main road side unit, the broadcasting road condition information is continuously maintained, and the broadcasted road condition information is sent to the auxiliary road side unit in the local area, so that the auxiliary road side unit stops actively broadcasting the road condition information, and receives and broadcasts the road condition information sent by the main road side unit, thereby avoiding the signal interference problem caused by the multipath road side units in the same area, and further improving the V2X communication efficiency.
In some embodiments, according to the notification, when the local roadside unit is determined to be the auxiliary roadside unit, the active broadcasting of the road condition information is stopped, and the road condition information transmitted by the main roadside unit in the local area is waited for being received and broadcast.
By the method, the auxiliary road side unit is switched to the relay mode, and the active broadcasting of the road condition information is stopped, so that the auxiliary road side unit can be prevented from occupying a V2X communication channel due to the active broadcasting of the road condition information, and the V2X communication efficiency is improved.
In some embodiments, upon determining that the local roadside unit is a secondary roadside unit, obtaining signal coverage weak location information for a primary roadside unit in the local area from the notification; and selecting a directional antenna to transmit signals to the signal coverage weak position according to the signal coverage weak position information of the main road side unit.
By the method, the directional enhancement of the signal blind area and the signal coverage weak link of the main road side unit is realized through the directional antenna of the auxiliary road side unit.
In some embodiments, selecting a directional antenna for signal transmission for the signal coverage weak location according to the signal coverage weak location information of the main road side unit includes:
According to a preset angle range, the directions of the directional antennas are sequentially switched, and the terminal signal receiving intensity of the weak signal coverage position of the main road side unit corresponding to each direction is obtained; and selecting the direction when the signal receiving intensity of the terminal is strongest as the final direction of the directional antenna, and transmitting signals according to the final direction.
By the method, the directional antennas are switched through polling, and the routing antenna with the optimal orientation is selected.
The embodiment of the application provides a broadcast control method, which comprises the following steps:
acquiring a signal strength message sent by at least one road side unit, wherein the signal strength message comprises the position of at least one terminal and the received signal strength of the terminal at the position; and determining signal coverage information of each road side unit according to the signal strength information sent by the road side unit;
and determining a main road side unit and an auxiliary road side unit in the same area according to the signal coverage information of each road side unit, and respectively informing the main road side unit and the auxiliary road side unit in the area, wherein the main road side unit is used for not only actively broadcasting road condition information, but also transmitting the broadcasted road condition information to the auxiliary road side unit, and the auxiliary road side unit stops actively broadcasting the road condition information and receives and broadcasts the road condition information transmitted by the main road side unit.
According to the method, the main road side unit and the auxiliary road side unit in the same area are determined according to the signal intensity information sent by the road side units, so that the signal interference problem caused by the multipath road side units in the same area can be avoided, and the V2X communication efficiency is improved.
In some embodiments, the notification sent to the secondary roadside unit further includes signal coverage weak location information of the primary roadside unit.
In some embodiments, for each of the roadside units, determining signal coverage information of the roadside unit according to a signal strength message sent by the roadside unit includes:
and generating a signal coverage point cloud image of the road side unit according to the signal intensity message sent by the road side unit, wherein the signal coverage point cloud image comprises at least one point cloud area, each point cloud area comprises at least one position point, each position point corresponds to the received signal intensity reported by a terminal at the position point, and if the received signal intensity is greater than a preset threshold, the color of the position point is a first color, otherwise, the color of the position point is a second color.
By the method, the signal coverage point cloud pictures of two colors are generated according to the signal intensity information sent by the road side unit.
In some embodiments, determining the primary road side unit and the secondary road side unit in the same area according to the signal coverage information of each road side unit includes:
and comparing the areas of the point cloud areas of the first color and/or the areas of the point cloud areas of the second color in the signal coverage point cloud diagrams of the road side units in the same area, and determining the main road side unit and the auxiliary road side unit in the same area according to the comparison result.
By the method, the main road side unit and the auxiliary road side unit in the same area are determined according to the signal coverage information of the road side unit.
In some embodiments, the comparing the signal coverage point cloud area of the first color and/or the point cloud area of the second color in the point cloud map of each roadside unit in the same area, and determining the main roadside unit and the auxiliary roadside unit in the same area according to the comparison result includes:
comparing signal coverage point cloud patterns of all road side units in the same area, and taking a road side unit corresponding to a signal coverage point cloud pattern with larger area of a first color point cloud area in the same area as a main road side unit if the difference value of the area of the first color point cloud area in the signal coverage point cloud patterns of all road side units in the area is not in a preset range, and taking other road side units in the same area as auxiliary road side units;
If the difference value of the areas of the point cloud areas of the first color in the signal coverage point cloud images of the road side units in the same area is within a preset range, the areas of the point cloud areas of the second color in the signal coverage point cloud images of the road side units in the same area are compared, the road side unit corresponding to the signal coverage point cloud image with the larger area of the point cloud area of the second color in the same area is taken as a main road side unit, and the other road side units in the same area are taken as auxiliary road side units.
By the method, the main road side unit and the auxiliary road side unit in the same area are determined according to the area sum of the signal coverage point cloud pictures of the two colors.
Another embodiment of the present application provides a broadcasting and control device thereof, which includes a memory for storing program instructions and a processor for calling the program instructions stored in the memory and executing any one of the methods according to the obtained program.
Furthermore, according to an embodiment, for example, a computer program product for a computer is provided, comprising software code portions for performing the steps of the method defined above, when said product is run on a computer. The computer program product may include a computer-readable medium having software code portions stored thereon. Furthermore, the computer program product may be directly loaded into the internal memory of the computer and/or transmitted via the network by at least one of an upload procedure, a download procedure and a push procedure.
Another embodiment of the present application provides a computer-readable storage medium storing computer-executable instructions for causing a computer to perform any of the methods described above.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application;
fig. 2 is a schematic diagram of information interaction between nodes in a communication system according to an embodiment of the present application;
fig. 3 is a schematic diagram of a signal coverage point cloud chart of an RUS device a according to an embodiment of the present application;
fig. 4 is a schematic diagram of a signal coverage point cloud of an RUS device B according to an embodiment of the present application;
fig. 5 is an overall flow diagram of a broadcasting method (RSU device side) according to an embodiment of the present application;
Fig. 6 is an overall flow diagram of a broadcast control method (network side) according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a broadcasting device (RSU device side) according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a broadcast control apparatus (network side) according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings of the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The embodiment of the application provides a broadcasting and control method and device thereof, which are used for determining a main road side unit and an auxiliary road side unit in the same area according to a signal intensity message sent by a road side unit, so that the signal interference problem caused by a plurality of paths of the road side units in the same area is avoided, and the V2X communication efficiency is further improved.
The method and the device are based on the same application, and because the principles of solving the problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and the repetition is not repeated.
The terms first, second and the like in the description and in the claims of the embodiments and in the above-described figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The following examples and embodiments are to be construed as illustrative only. Although the specification may refer to "an", "one", or "some" example or embodiment(s) at several points, this does not mean that each such reference is related to the same example or embodiment, nor that the feature is applicable to only a single example or embodiment. Individual features of different embodiments may also be combined to provide further embodiments. Furthermore, terms such as "comprising" and "including" should be understood not to limit the described embodiments to consist of only those features already mentioned; such examples and embodiments may also include features, structures, units, modules, etc. that are not specifically mentioned.
Various embodiments of the present application are described in detail below with reference to the drawings attached hereto. It should be noted that, the display sequence of the embodiments of the present application only represents the sequence of the embodiments, and does not represent the advantages or disadvantages of the technical solutions provided by the embodiments.
It should be noted that, according to the technical scheme provided by the embodiment of the application, road condition information is broadcasted to the vehicle-mounted unit of the vehicle through the RSU device, the vehicle-mounted unit sends a signal intensity message corresponding to the RSU device, the RSU device reports the message to the cloud platform, and the cloud platform determines the main road side unit and the auxiliary road side unit of each intersection according to the signal intensity message for illustration, but the invention is not limited thereto.
Some terms appearing hereinafter are explained:
1. the term "MEC", mobile Edge Computing, in embodiments of the present application, refers to a high performance computer server deployed in the vicinity of a device.
2. The term "V2X", vehicle to X in the examples of the present application ， The vehicle-mounted unit is communicated with other equipment, namely information exchange between the vehicle and the outside.
3. In the embodiment of the application, the term RSU, the road Side Unit, is an important component of the Internet of vehicles system, and traffic information such as traffic light information of a traffic signal is broadcasted to the surrounding through a V2X protocol to inform the safe driving of the vehicle.
4. The term "directional antenna" in the embodiments of the present application refers to an antenna that transmits and receives electromagnetic waves particularly strongly in one or a few specific directions, while transmitting and receiving electromagnetic waves in other directions is zero or very small.
5. The term "omni-directional antenna" in the embodiments of the present application represents a beam having a certain width in the horizontal direction and a beam having a certain width in the vertical direction, which is generally called non-directivity, and the smaller the lobe width, the larger the gain.
6. In the embodiment of the application, the term "OBU", on Board Unit, on-Board Unit, is installed On a vehicle and is provided with a physical Unit for collecting, processing and transmitting V2X wireless information.
In the field of Internet of vehicles, road side unit RSU equipment is responsible for broadcasting traffic information processed by mobile edge calculation MEC, annunciators and the like to vehicle-mounted unit OBU equipment of surrounding vehicles, and is used for reminding nearby vehicles of safe driving, if a vehicle in a certain lane fails and cannot move, the RSU equipment can remind other vehicles in the same lane to pay attention to avoid through V2X information. In order to ensure that traffic information is accurately and timely pushed to surrounding vehicles, the RSU equipment generally adopts a high-power omni-directional antenna to perform broadcast transmission, and can cover 500-1000M at maximum. Therefore, when a plurality of road side unit RSU devices exist at a certain intersection, signal overlapping areas are increased due to omni-directional blind supplement of the plurality of RSU devices, wireless signals are mutually interfered, and the V2X communication efficiency is low.
In order to solve the above problems, the embodiments of the present application provide a broadcasting and control method thereof, which uses acquired signal strength information of RSU devices to calculate two kinds of coverage point cloud image areas of each RSU device (one is good and the other is bad) at each intersection, and determines a main RSU device and an auxiliary RSU device at each intersection by comparing the signal coverage point cloud image areas of each RSU device, so that the auxiliary RSU device stops actively broadcasting road condition information, and receives and forwards the broadcasting information sent by the main RSU device.
Referring to fig. 1, a communication system provided in an embodiment of the present application includes, for example, an RSU device, a V2X cloud platform; wherein:
RSU devices include, for example, 5G (5 th Generation Mobile Communication Technology) modules, DSP (Digital Signal Processing) modules, GNSS (Global Navigation Satellite System) modules, V2X modules, antenna control modules, antenna modules; the 5G module is used for realizing communication between the RSU equipment and the V2X cloud platform; the DSP module is a service processing module and is used for controlling other modules of the RSU equipment; the GNSS module is used for receiving satellite information and confirming the position information of the current RSU equipment; the V2X module is used for sending and receiving 3G PPR 14V 2X protocol data; the antenna control module is used for controlling the switching of the antenna and switching the antenna into an omnidirectional routing or directional antenna; the antenna module is used for performing antenna switching according to the control command of the antenna control module;
After the RSU devices are powered on, for example, as shown in fig. 2, a series of module initialization, for example, a V2X module, a 5G module and a GNSS module, is performed first, then registration and login are performed to the V2X cloud platform, and after the initialization of each RSU device is completed, the GNSS module obtains respective position information and reports the position information to the V2X cloud platform;
and the V2X cloud platform stores data after receiving the position information reported by each RSU device, and calibrates the positions of each RSU device by using a high-precision map.
In some embodiments, such as shown in fig. 2, each RSU device sends a road condition message to the corresponding on-board unit OBU device of the vehicle and requests the OBU device to respond. The message replied by the OBU device to the RSU device needs to contain the RSU device ID, the accurate position information of the received road condition message and the signal strength of the received road condition message broadcast by the RSU device. The RSU equipment receives the reply information of the OBU equipment and reports the reply information to the V2X cloud platform, and the V2X cloud platform marks the signal strength when the OBU equipment receives the RSU equipment broadcast information at a certain position on a map according to the reported information, and a set formed by each position, namely a point cloud picture, is formed, so that the drawing of the signal coverage point cloud picture of each RSU equipment is completed. According to different moments, signal intensity information reported by the OBU equipment at each position can form point information on a high-precision map, each point is reported information of the OBU equipment, and the point information can form a point cloud picture as time accumulates. If the received signal strength at a certain point is greater than-80 dbm, the dot data is drawn to dark gray (indicating good signal) and conversely, to white gray (indicating poor signal). In the dot cloud image, the white gray dots are formed on the individual dark gray dot cloud image or the white gray dot cloud image is formed on the dark gray dots due to the abnormality of the individual OBU device or the like, and the dot information that the color occupies a plurality of dots is used as the reference.
For example, as shown in fig. 3, the signal coverage point cloud image of the RSU a device causes poor coverage of the north road signal due to the shielding of the nearby buildings, the dark gray dot area is less, the white gray dot area is more, and the dark gray dot image area is the majority of the east, west and south roads due to no obvious shielding of the buildings. Also, as shown in fig. 4, for example, the signal coverage point cloud of the RSU B device has poor signal coverage on the west road due to the shielding of the opposite building, and has a small dark gray dot area and a large white gray dot area.
In some embodiments, after the drawing of the RSU device signal coverage point cloud chart is completed, the V2X cloud platform counts RSU device signal coverage point cloud chart information of each intersection, for example, if the number of RSU devices at a certain intersection is greater than 1, then determining the primary and secondary RSU devices. For example, as shown in fig. 3 and 4, the RSU devices, such as RSU device a and RSU device B, are deployed at two places at an intersection because the surrounding buildings are obviously shielded, and thus cannot be completely covered by the RSU device at a certain place. The V2X cloud platform respectively calculates the sum of the areas of the deep gray point cloud pictures of the RSU equipment A and the sum of the areas of the deep gray point cloud pictures of the RSU equipment B, and judges that the RSU equipment with the largest sum of the areas of the deep gray point cloud pictures is the main RSU equipment of the intersection, and other RSU equipment is auxiliary RSU equipment.
In some embodiments, for example, RSU device a and RSU device B shown in fig. 3 and 4, if the dark gray point cloud areas of RSU device a and RSU device B are close to each other, or the difference between the dark gray point cloud areas of RSU device a and RSU device B is within a preset range, the V2X cloud platform continues to count the sum of the areas of the white point cloud images of RSU device a and RSU device B, and determines that the RSU device with the largest sum of the white point cloud areas is the main RSU device at the intersection, and the other RSU devices are auxiliary RSU devices. When the sum of the areas of the dark gray point cloud pictures of the RSU equipment is almost equal, the signal advantage coverage areas of the RSU equipment are consistent; the stronger the signal coverage, the larger the sum of white-gray point cloud image areas, the wider the weaker signal coverage representing the RSU device.
In some embodiments, when the sum of dark gray point cloud areas and the sum of white point cloud areas of RSU devices deployed at an intersection are close, one RSU device may be arbitrarily designated as the main RSU device at the intersection.
For example, as shown in fig. 3 and 4, since the sum of the areas of the dark gray point cloud patterns of the RSU device a is larger than the sum of the areas of the dark gray point cloud patterns of the RSU device B, the V2X cloud platform determines that the RSU device a is the main RSU device at the intersection, and the RSU device B is the auxiliary RSU device. After determining the primary and secondary RSU devices at a certain intersection, the V2X cloud platform issues a notification to each RSU device corresponding to the intersection, for example, as shown in fig. 2, the notification issued by the V2X cloud platform to RSU device B (i.e., secondary RSU device) further includes a signal coverage weak area of RSU device a (i.e., primary RSU device).
In some embodiments, for example, after receiving a handover auxiliary device command (i.e., notification) issued by the V2X cloud platform, the RSU device B (i.e., the auxiliary RSU device) performs directional antenna selection to select a directional antenna with a suitable angle for handover, so that the signal coverage weak area of the RSU device a (i.e., the main RSU device) is enhanced. Meanwhile, the RSU equipment B is switched to a relay mode, road condition information is not actively transmitted any more, and the road condition information transmitted by the RSU equipment A is received and forwarded, so that the situation that the RSU equipment A and the RSU equipment B actively transmit the road condition information at the same intersection to occupy a V2X communication channel to cause signal interference is avoided, and the communication efficiency of V2X is further improved.
The directional antennas of the RSU device are generally responsible for signal coverage in a certain angle range, for example, three sets of directional antennas each cover 120 degrees, and different installation angles of the RSU devices can cause different orientations of the directional antennas of the sets, so in some embodiments, the auxiliary RSU device switches the directional antennas through polling, and in each polling process, whether the signal coverage weak area of the main RSU device is improved or not is observed, whether the signal strength information when the on-board unit OBU receives the main RSU device message is improved or not, and the determination can be made through the V2X cloud platform to acquire the signal strength information and count the white point cloud image area when the on-board unit OBU receives the main RSU device message. And selecting the directional antenna with the optimal improving effect as a final directional antenna.
In summary, referring to fig. 5, on the RSU device side, a broadcasting method provided in the embodiment of the present application includes:
step S101, receiving a notification of a local road side unit as a main road side unit or a secondary road side unit;
step S102, according to the notification, when the local road side unit is determined to be a main road side unit, continuously maintaining the broadcast road condition information, and transmitting the broadcast road condition information to an auxiliary road side unit in the local area, wherein the auxiliary road side unit stops actively broadcasting the road condition information, and receives and broadcasts the road condition information transmitted by the main road side unit;
wherein the local areas, such as the same intersection;
through step S102, the auxiliary road side unit is switched to the relay mode, and the active sending of the road condition message is stopped, so that signal interference caused by that the multiple RSU devices actively send the road condition message in the same area can be avoided, and further the V2X communication efficiency is improved.
To avoid signal interference, in some embodiments, according to the notification, when the local roadside unit is determined to be a secondary roadside unit, active broadcasting of the road condition information is stopped, waiting for receiving and broadcasting the road condition information transmitted by the main roadside unit in the local area.
To achieve signal enhancement of the primary road side unit signal coverage weak area, in some embodiments, according to the notification, when the local road side unit is determined to be a secondary road side unit, signal coverage weak position information of the primary road side unit in the local area is acquired from the notification; selecting a directional antenna to perform signal transmission aiming at the signal coverage weak position according to the signal coverage weak position information of the main road side unit;
wherein the signal covers a weak location, such as the area shown in the white point cloud. In practical applications, red and green may be used to distinguish between a better signal coverage and a weak location, e.g., green indicates a better signal coverage location and red indicates a weak signal coverage location.
To select a routing antenna with an optimal orientation, in some embodiments, selecting a routing antenna for signal transmission at a weak signal coverage position according to the weak signal coverage position information of the main road side unit includes:
according to a preset angle range, the directions of the directional antennas are sequentially switched, and the terminal signal receiving intensity of the weak signal coverage position of the main road side unit corresponding to each direction is obtained; and selecting the direction when the signal receiving intensity of the terminal is strongest as the final direction of the directional antenna, and transmitting signals according to the final direction.
Accordingly, referring to fig. 6, on a network side, for example, a V2X cloud platform, a broadcast control method provided in the embodiments of the present application includes:
step S201, obtaining a signal strength message sent by at least one road side unit, wherein the signal strength message comprises the position of at least one terminal and the received signal strength of the terminal at the position; and determining signal coverage information of each road side unit according to the signal strength information sent by the road side unit;
the signal strength information is, for example, the signal strength when the OBU equipment receives the road side unit information;
the terminal, such as the vehicle described above, may also be other mobile terminals;
the signal coverage information, such as the signal coverage point cloud image, may be other signal coverage information besides the signal coverage point cloud image, which can show which area signals are stronger and which area signals are weaker, and the information is all possible;
step S202, determining a main road side unit and an auxiliary road side unit in the same area according to the signal coverage information of each road side unit, and respectively informing the main road side unit and the auxiliary road side unit in the area, wherein the main road side unit is used for actively broadcasting road condition information and transmitting the broadcasted road condition information to the auxiliary road side unit, and the auxiliary road side unit stops actively broadcasting the road condition information and receives and broadcasts the road condition information transmitted by the main road side unit;
Wherein the same region, e.g., the same intersection;
through step S202, determining the main and auxiliary road side units in each area according to the signal coverage information of the road side units is realized, so that the signal interference problem caused by the multipath side units in the same area can be avoided, and the V2X communication efficiency is further improved.
To achieve the purpose of generating a two-color signal coverage point cloud according to a signal strength message sent by a roadside unit, in some embodiments, for each of the roadside units, determining signal coverage information of the roadside unit according to the signal strength message sent by the roadside unit includes:
generating a signal coverage point cloud image of each road side unit according to a signal intensity message sent by the road side unit, wherein the signal coverage point cloud image comprises at least one point cloud area, each point cloud area comprises at least one position point, each position point corresponds to the received signal intensity reported by a terminal at the position point, if the received signal intensity is greater than a preset threshold, the color of the position point is a first color, and otherwise, the color of the position point is a second color;
wherein the first color, e.g. dark gray as described above, indicates a good signal; the second color, e.g. white gray as described above, indicates a poor signal.
In some embodiments, determining the primary road side unit and the secondary road side unit in the same area according to the signal coverage information of each road side unit includes:
comparing the areas of the point cloud areas of the first color and/or the areas of the point cloud areas of the second color in the signal coverage point cloud diagrams of the road side units in the same area, and determining a main road side unit and an auxiliary road side unit in the same area according to the comparison result;
the first color point cloud area is, for example, an area shown by the dark gray point cloud image; the second color point cloud area is, for example, the area indicated by the white point cloud image.
To determine the main road side unit and the auxiliary road side unit in the same area according to the area sum of the signal coverage point cloud images of two colors, in some embodiments, the comparing the area of the first color point cloud area and/or the area of the second color point cloud area in the signal coverage point cloud image of each road side unit in the same area, and determining the main road side unit and the auxiliary road side unit in the same area according to the comparison result includes:
comparing signal coverage point cloud patterns of all road side units in the same area, and taking a road side unit corresponding to a signal coverage point cloud pattern with larger area of a first color point cloud area in the same area as a main road side unit if the difference value of the area of the first color point cloud area in the signal coverage point cloud patterns of all road side units in the area is not in a preset range, and taking other road side units in the same area as auxiliary road side units;
If the difference value of the areas of the point cloud areas of the first color in the signal coverage point cloud images of all the road side units in the same area is within a preset range, comparing the areas of the point cloud areas of the second color in the signal coverage point cloud images of all the road side units in the same area, taking the road side unit corresponding to the signal coverage point cloud image with the larger area of the point cloud area of the second color in the same area as a main road side unit, and taking other road side units in the same area as auxiliary road side units;
the difference value of the areas of the point cloud areas of the first color is within a preset range, namely the areas of the dark gray point cloud images of the RSU equipment are close.
The following describes a device or apparatus provided in the embodiments of the present application, where explanation or illustration of the same or corresponding technical features as those described in the above method is omitted herein.
Referring to fig. 7, on the RSU device side, a broadcasting apparatus provided in an embodiment of the present application includes:
the processor 500, configured to read the program in the memory 520, performs the following procedures:
receiving a notification of a local road side unit as a main road side unit or an auxiliary road side unit;
and according to the notification, when the local road side unit is determined to be the main road side unit, continuously maintaining the broadcasting road condition information, and transmitting the broadcasting road condition information to the auxiliary road side unit in the local area, wherein the auxiliary road side unit stops actively broadcasting the road condition information, and receives and broadcasts the road condition information transmitted by the main road side unit.
In some embodiments, according to the notification, when the local roadside unit is determined to be the auxiliary roadside unit, the active broadcasting of the road condition information is stopped, and the road condition information transmitted by the main roadside unit in the local area is waited for being received and broadcast.
In some embodiments, upon determining that the local roadside unit is a secondary roadside unit, obtaining signal coverage weak location information for a primary roadside unit in the local area from the notification; and selecting a directional antenna to transmit signals to the signal coverage weak position according to the signal coverage weak position information of the main road side unit.
In some embodiments, selecting a directional antenna for signal transmission for the signal coverage weak location according to the signal coverage weak location information of the main road side unit includes:
according to a preset angle range, the directions of the directional antennas are sequentially switched, and the terminal signal receiving intensity of the weak signal coverage position of the main road side unit corresponding to each direction is obtained; and selecting the direction when the signal receiving intensity of the terminal is strongest as the final direction of the directional antenna, and transmitting signals according to the final direction.
A transceiver 510 for receiving and transmitting data under the control of the processor 500.
Wherein in fig. 7, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 500 and various circuits of memory represented by memory 520, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 510 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium.
In some embodiments, the broadcasting apparatus provided in the embodiments of the present application further includes a user interface 530, where the user interface 530 may be an interface capable of externally connecting and inscribing a desired device, and the connected device includes, but is not limited to, a keypad, a display, a speaker, a microphone, a joystick, and the like.
The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 in performing operations.
In some embodiments, the processor 500 may be a CPU (Central processing Unit), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable Gate array), or CPLD (Complex Programmable Logic Device ).
Accordingly, referring to fig. 8, on a network side, for example, a V2X cloud platform, a broadcast control apparatus provided in an embodiment of the present application includes:
the processor 600, configured to read the program in the memory 620, performs the following procedures:
acquiring a signal strength message sent by at least one road side unit, wherein the signal strength message comprises the position of at least one terminal and the received signal strength of the terminal at the position; and determining signal coverage information of each road side unit according to the signal strength information sent by the road side unit;
and determining a main road side unit and an auxiliary road side unit in the same area according to the signal coverage information of each road side unit, and respectively informing the main road side unit and the auxiliary road side unit in the area, wherein the main road side unit is used for not only actively broadcasting road condition information, but also transmitting the broadcasted road condition information to the auxiliary road side unit, and the auxiliary road side unit stops actively broadcasting the road condition information and receives and broadcasts the road condition information transmitted by the main road side unit.
In some embodiments, the notification sent to the secondary roadside unit further includes signal coverage weak location information of the primary roadside unit.
In some embodiments, for each of the roadside units, determining signal coverage information of the roadside unit according to a signal strength message sent by the roadside unit includes:
and generating a signal coverage point cloud image of the road side unit according to the signal intensity message sent by the road side unit, wherein the signal coverage point cloud image comprises at least one point cloud area, each point cloud area comprises at least one position point, each position point corresponds to the received signal intensity reported by a terminal at the position point, and if the received signal intensity is greater than a preset threshold, the color of the position point is a first color, otherwise, the color of the position point is a second color.
In some embodiments, determining the primary road side unit and the secondary road side unit in the same area according to the signal coverage information of each road side unit includes:
and comparing the areas of the point cloud areas of the first color and/or the areas of the point cloud areas of the second color in the signal coverage point cloud diagrams of the road side units in the same area, and determining the main road side unit and the auxiliary road side unit in the same area according to the comparison result.
In some embodiments, the comparing the signal coverage point cloud area of the first color and/or the point cloud area of the second color in the point cloud map of each roadside unit in the same area, and determining the main roadside unit and the auxiliary roadside unit in the same area according to the comparison result includes:
comparing signal coverage point cloud patterns of all road side units in the same area, and taking a road side unit corresponding to a signal coverage point cloud pattern with larger area of a first color point cloud area in the same area as a main road side unit if the difference value of the area of the first color point cloud area in the signal coverage point cloud patterns of all road side units in the area is not in a preset range, and taking other road side units in the same area as auxiliary road side units;
if the difference value of the areas of the point cloud areas of the first color in the signal coverage point cloud images of the road side units in the same area is within a preset range, the areas of the point cloud areas of the second color in the signal coverage point cloud images of the road side units in the same area are compared, the road side unit corresponding to the signal coverage point cloud image with the larger area of the point cloud area of the second color in the same area is taken as a main road side unit, and the other road side units in the same area are taken as auxiliary road side units.
A transceiver 610 for receiving and transmitting data under the control of the processor 600.
Wherein in fig. 8, a bus architecture may comprise any number of interconnected buses and bridges, and in particular, one or more processors represented by processor 600 and various circuits of memory represented by memory 620, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 610 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium.
The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.
In some embodiments, the processor 600 may be a CPU (Central processing Unit), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable Gate array), or CPLD (Complex Programmable Logic Device ).
The embodiment of the application provides a communication system, which comprises, for example, the V2X cloud platform and the RSU device provided by the embodiment of the application.
Embodiments of the present application provide a computing device, which may be specifically a desktop computer, a portable computer, a smart phone, a tablet computer, a personal digital assistant (Personal Digital Assistant, PDA), and the like. The computing device may include a central processing unit (Center Processing Unit, CPU), memory, input/output devices, etc., the input devices may include a keyboard, mouse, touch screen, etc., and the output devices may include a display device, such as a liquid crystal display (Liquid Crystal Display, LCD), cathode Ray Tube (CRT), etc.
The memory may include Read Only Memory (ROM) and Random Access Memory (RAM) and provides the processor with program instructions and data stored in the memory. In the embodiments of the present application, the memory may be used to store a program of any of the methods provided in the embodiments of the present application.
The processor is configured to execute any of the methods provided in the embodiments of the present application according to the obtained program instructions by calling the program instructions stored in the memory.
Embodiments of the present application also provide a computer program product or computer program comprising computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the method of any of the above embodiments. The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The present embodiments provide a computer readable storage medium for storing computer program instructions for use with an apparatus provided in the embodiments of the present application described above, which includes a program for executing any one of the methods provided in the embodiments of the present application described above. The computer readable storage medium may be a non-transitory computer readable medium.
The computer-readable storage medium can be any available medium or data storage device that can be accessed by a computer, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), etc.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (12)
1. A method of broadcasting, the method comprising:
receiving a notification of a local road side unit as a main road side unit or an auxiliary road side unit;
and according to the notification, when the local road side unit is determined to be the main road side unit, continuously maintaining the broadcasting road condition information, and transmitting the broadcasting road condition information to the auxiliary road side unit in the local area, wherein the auxiliary road side unit stops actively broadcasting the road condition information, and receives and broadcasts the road condition information transmitted by the main road side unit.
2. The method of claim 1, wherein upon determining the local roadside unit as the auxiliary roadside unit, stopping actively broadcasting the road condition information, waiting to receive and broadcast the road condition information transmitted by the main roadside unit in the local area.
3. The method according to claim 1, wherein, according to the notification, when a local roadside unit is determined as a secondary roadside unit, signal coverage weak location information of a main roadside unit in the local area is acquired from the notification; and selecting a directional antenna to transmit signals to the signal coverage weak position according to the signal coverage weak position information of the main road side unit.
4. A method according to claim 3, wherein selecting a directional antenna for signal transmission for the signal coverage weak location based on the signal coverage weak location information of the main road side unit comprises:
according to a preset angle range, the directions of the directional antennas are sequentially switched, and the terminal signal receiving intensity of the weak signal coverage position of the main road side unit corresponding to each direction is obtained; and selecting the direction when the signal receiving intensity of the terminal is strongest as the final direction of the directional antenna, and transmitting signals according to the final direction.
5. A broadcast control method, the method comprising:
acquiring a signal strength message sent by at least one road side unit, wherein the signal strength message comprises the position of at least one terminal and the received signal strength of the terminal at the position; and determining signal coverage information of each road side unit according to the signal strength information sent by the road side unit;
and determining a main road side unit and an auxiliary road side unit in the same area according to the signal coverage information of each road side unit, and respectively informing the main road side unit and the auxiliary road side unit in the area, wherein the main road side unit is used for not only actively broadcasting road condition information, but also transmitting the broadcasted road condition information to the auxiliary road side unit, and the auxiliary road side unit stops actively broadcasting the road condition information and receives and broadcasts the road condition information transmitted by the main road side unit.
6. The method of claim 5, wherein the notification sent to the secondary roadside unit further comprises signal coverage weak location information for the primary roadside unit.
7. The method of claim 5, wherein for each of the roadside units, determining signal coverage information for the roadside unit based on signal strength messages sent by the roadside unit comprises:
And generating a signal coverage point cloud image of the road side unit according to the signal intensity message sent by the road side unit, wherein the signal coverage point cloud image comprises at least one point cloud area, each point cloud area comprises at least one position point, each position point corresponds to the received signal intensity reported by a terminal at the position point, and if the received signal intensity is greater than a preset threshold, the color of the position point is a first color, otherwise, the color of the position point is a second color.
8. The method of claim 7, wherein determining the primary and secondary roadside units within the same region based on the signal coverage information of each of the roadside units comprises:
and comparing the areas of the point cloud areas of the first color and/or the areas of the point cloud areas of the second color in the signal coverage point cloud diagrams of the road side units in the same area, and determining the main road side unit and the auxiliary road side unit in the same area according to the comparison result.
9. The method according to claim 8, wherein comparing the area of the first color point cloud area and/or the area of the second color point cloud area in the point cloud map with the signal coverage of each roadside unit in the same area, and determining the main roadside unit and the auxiliary roadside unit in the same area according to the comparison result comprises:
Comparing signal coverage point cloud patterns of all road side units in the same area, and taking a road side unit corresponding to a signal coverage point cloud pattern with larger area of a first color point cloud area in the same area as a main road side unit if the difference value of the area of the first color point cloud area in the signal coverage point cloud patterns of all road side units in the area is not in a preset range, and taking other road side units in the same area as auxiliary road side units;
if the difference value of the areas of the point cloud areas of the first color in the signal coverage point cloud images of the road side units in the same area is within a preset range, the areas of the point cloud areas of the second color in the signal coverage point cloud images of the road side units in the same area are compared, the road side unit corresponding to the signal coverage point cloud image with the larger area of the point cloud area of the second color in the same area is taken as a main road side unit, and the other road side units in the same area are taken as auxiliary road side units.
10. A broadcasting apparatus, comprising:
a memory for storing program instructions;
a processor for invoking program instructions stored in said memory to perform the method of any of claims 1 to 4 in accordance with the obtained program.
11. A broadcast control apparatus, comprising:
a memory for storing program instructions;
a processor for invoking program instructions stored in said memory to perform the method of any of claims 5 to 9 in accordance with the obtained program.
12. A communication system comprising the apparatus of claim 10, and/or the apparatus of claim 11.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211576817.4A CN116017313A (en) | 2022-12-02 | 2022-12-02 | Broadcasting and control method and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211576817.4A CN116017313A (en) | 2022-12-02 | 2022-12-02 | Broadcasting and control method and device thereof |
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| CN116017313A true CN116017313A (en) | 2023-04-25 |
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| CN202211576817.4A Pending CN116017313A (en) | 2022-12-02 | 2022-12-02 | Broadcasting and control method and device thereof |
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| CN (1) | CN116017313A (en) |
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