CN111405467A - Vehicle communication method, vehicle-road cooperation system, related equipment and readable medium - Google Patents

Vehicle communication method, vehicle-road cooperation system, related equipment and readable medium Download PDF

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CN111405467A
CN111405467A CN202010200421.4A CN202010200421A CN111405467A CN 111405467 A CN111405467 A CN 111405467A CN 202010200421 A CN202010200421 A CN 202010200421A CN 111405467 A CN111405467 A CN 111405467A
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edge cloud
vehicle
edge
area
information
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CN111405467B (en
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侯琛
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Tencent Technology Shenzhen Co Ltd
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Tencent Technology Shenzhen Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/025—Services making use of location information using location based information parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information

Abstract

The embodiment of the application discloses a vehicle communication method, a vehicle-road cooperative system, related equipment and a readable medium, wherein the method comprises the steps of sending an acquisition request of edge cloud information; receiving edge cloud information corresponding to position information of a vehicle; edge cloud information, including: the method comprises the following steps that the number of edge clouds in an area where a vehicle is located currently, the probability that each edge cloud in the area where the vehicle is located successfully receives an edge cloud access request, and the probability that the edge clouds successfully respond to the edge cloud access request; determining the number n of edge cloud access requests required to be sent by the terminal equipment according to the edge cloud information; and sending n edge cloud access requests to an edge cloud of the area where the vehicle is located. According to the method and the device, the randomness of the edge cloud response to the edge cloud access request is considered in the number n of the edge cloud access requests required to be sent by the terminal device, which is determined according to the edge cloud information, so that the edge clouds in the current area of the vehicle can be guaranteed to successfully respond to the edge cloud access request.

Description

Vehicle communication method, vehicle-road cooperation system, related equipment and readable medium
Technical Field
The application relates to the technical field of vehicle networking, in particular to a vehicle communication method, a vehicle road coordination system, related equipment and a readable medium.
Background
The intelligent vehicle-road cooperation system is a system for acquiring vehicle and road information based on technologies such as wireless communication, internet and the like, and realizing information interaction and sharing through vehicle-vehicle and vehicle-road communication, thereby realizing intelligent cooperation and coordination between vehicles and road side facilities.
In an existing vehicle-road coordination system, terminal devices on a vehicle need to communicate and interact with an edge cloud of an area where the vehicle is located, so as to obtain a road condition information service provided by the edge cloud. Specifically, the terminal device on the vehicle acquires the number b of edge clouds in the current region from the center cloud, and then sends b edge cloud access requests to establish communication with the edge cloud in the current region. However, due to factors such as a network environment and performance of the edge cloud device, the b access requests sent by the terminal device on the vehicle may not be successfully received and responded by all the b edge clouds, and thus reliability of acquiring the edge cloud service by the terminal device on the vehicle is low.
Disclosure of Invention
Based on the defects of the prior art, the application discloses a vehicle communication method, a vehicle-road coordination system, related equipment and a readable medium, so that the edge cloud in the current area of the vehicle can be ensured to successfully respond to the edge cloud access request, and the reliability of the terminal equipment on the vehicle for obtaining the edge cloud service is improved.
The application discloses in a first aspect a vehicle communication method, comprising:
sending an acquisition request of edge cloud information to a central cloud; the obtaining request of the edge cloud information carries the current position information of the vehicle;
receiving edge cloud information which is sent by the center cloud and corresponds to the position information of the vehicle; wherein the edge cloud information includes: the number of edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives an edge cloud access request, and the probability that each edge cloud in the current area of the vehicle successfully responds to an edge cloud access request;
calculating to obtain a number threshold N of edge cloud access requests at least needing to be sent by the terminal equipment according to the preset number of times that the edge cloud needs to successfully respond and the edge cloud information sent by the center cloud; wherein N is a positive integer;
determining the number N of the edge cloud access requests required to be sent by the terminal equipment according to the number threshold N of the edge cloud access requests at least required to be sent by the terminal equipment; wherein N is greater than or equal to N;
and sending n edge cloud access requests to an edge cloud of the area where the vehicle is located.
Optionally, in the vehicle communication method, the number of times that the edge cloud needs to respond successfully is set according to the reliability of the edge cloud in the area where the vehicle is currently located; the reliability of the edge cloud of the current area of the vehicle is used for explaining the reliability of the terminal equipment for acquiring the edge cloud service in the current area; the reliability of the edge cloud is obtained according to the number of the edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request, and the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request.
Optionally, in the vehicle communication method, the calculating, according to the number of times that a preset edge cloud needs to successfully respond and the edge cloud information sent by the center cloud, a number threshold N of at least edge cloud access requests that a terminal device needs to send includes:
substituting the number of times that the edge cloud needs to successfully respond, the number of edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request and the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request into a first formula, and calculating to obtain a number threshold N of the edge cloud access requests at least needing to be sent by the terminal equipment;
wherein the first formula is:
Figure BDA0002419170710000021
u is the number of times of successful response of the edge cloud; b is the number of edge clouds in the current area of the vehicle, p is the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request, and q is the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request; u and b are both positive integers.
Optionally, in the vehicle communication method, after the sending n edge cloud access requests to the edge cloud of the area where the vehicle is located, the method further includes:
receiving response information sent by an edge cloud of an area where the vehicle is located; wherein the response information carries identification information of the edge cloud;
sending a road condition service request to the edge cloud of the area where the vehicle is located by using the identification information of the edge cloud;
and receiving road condition service information sent by the edge cloud of the area where the vehicle is located.
Optionally, in the vehicle communication method, after receiving response information sent by an edge cloud of an area where the vehicle is located, the method further includes:
selecting the edge cloud with the largest number of successful response times in the area where the vehicle is located according to the received response information sent by the edge cloud in the area where the vehicle is located;
the sending of the road condition service request to the edge cloud of the area where the vehicle is located by using the identification information of the edge cloud includes:
sending a road condition service request to the edge cloud with the highest successful response times in the area where the vehicle is located by utilizing the identification information of the edge cloud with the highest successful response times in the area where the vehicle is located;
the receiving of the road condition service information sent by the edge cloud of the area where the vehicle is located includes:
and receiving the road condition service information sent by the edge cloud with the largest successful response times in the area where the vehicle is located.
A second aspect of the present application discloses a vehicle communication method, comprising:
receiving an acquisition request of edge cloud information sent by terminal equipment; the obtaining request of the edge cloud information carries the current position information of the vehicle;
sending edge cloud information corresponding to the position information of the vehicle to the terminal device; the edge cloud information is used for determining the number n of edge cloud access requests required to be sent by the terminal equipment; n is a positive integer; the edge cloud information includes: the method comprises the following steps of counting the number of edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives an edge cloud access request, and the probability that each edge cloud in the current area of the vehicle successfully responds to an edge cloud access request.
A third aspect of the present application discloses a terminal device, comprising:
the system comprises a first sending unit, a second sending unit and a central cloud computing unit, wherein the first sending unit is used for sending an acquisition request of edge cloud information to the central cloud; the obtaining request of the edge cloud information carries the current position information of the vehicle;
a first receiving unit, configured to receive edge cloud information corresponding to the position information of the vehicle, which is sent by the center cloud; wherein the edge cloud information includes: the number of edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives an edge cloud access request, and the probability that each edge cloud in the current area of the vehicle successfully responds to an edge cloud access request;
the determining unit is used for calculating to obtain a threshold value N of the number of edge cloud access requests at least needing to be sent by the terminal equipment according to the number of times that a preset edge cloud needs to successfully respond and the edge cloud information sent by the center cloud; wherein N is a positive integer; determining the number N of the edge cloud access requests required to be sent by the terminal equipment according to the number threshold N of the edge cloud access requests at least required to be sent by the terminal equipment; wherein N is greater than or equal to N;
and the second sending unit is used for sending the n edge cloud access requests to the edge cloud of the area where the vehicle is located.
Optionally, in the terminal device, the number of times that the edge cloud needs to respond successfully is set according to the reliability of the edge cloud in the area where the vehicle is currently located; the reliability of the edge cloud of the current area of the vehicle is used for explaining the reliability of the terminal equipment for acquiring the edge cloud service in the current area; the reliability of the edge cloud is obtained according to the number of the edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request, and the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request.
Optionally, in the terminal device, the determining unit obtains, by calculation, according to the number of times that the preset edge cloud needs to successfully respond and the edge cloud information sent by the center cloud, a number threshold N of at least edge cloud access requests that the terminal device needs to send, and is used for:
substituting the number of times that the edge cloud needs to successfully respond, the number of edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request and the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request into a first formula, and calculating to obtain a number threshold N of the edge cloud access requests at least needing to be sent by the terminal equipment;
wherein the first formula is:
Figure BDA0002419170710000041
u is the number of times of successful response of the edge cloud; b is the number of edge clouds in the current area of the vehicle, p is the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request, and q is the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request; u and b are both positive integers.
Optionally, in the terminal device, the method further includes:
the second receiving unit is used for receiving response information sent by the edge cloud of the area where the vehicle is located; wherein the response information carries identification information of the edge cloud;
a third sending unit, configured to send a road condition service request to the edge cloud of the area where the vehicle is located by using the identification information of the edge cloud;
and the third receiving unit is used for receiving the road condition service information sent by the edge cloud of the area where the vehicle is located.
Optionally, in the terminal device, the method further includes:
the selecting unit is used for selecting the edge cloud with the largest successful response times in the area where the vehicle is located according to the received response information sent by the edge cloud in the area where the vehicle is located;
wherein the third transmitting unit includes:
a third sending subunit, configured to send a road condition service request to the edge cloud with the largest number of successful response times in the area where the vehicle is located, by using the identification information of the edge cloud with the largest number of successful response times in the area where the vehicle is located;
the third receiving unit includes:
and the third receiving subunit is used for receiving the road condition service information sent by the edge cloud with the largest number of successful response times in the area where the vehicle is located.
The fourth aspect of the present application discloses a center cloud, comprising:
the receiving unit is used for receiving an acquisition request of the edge cloud information sent by the terminal equipment; the obtaining request of the edge cloud information carries the current position information of the vehicle;
a transmitting unit configured to transmit edge cloud information corresponding to the position information of the vehicle to the terminal device; the edge cloud information is used for determining the number n of edge cloud access requests required to be sent by the terminal equipment; n is a positive integer; the edge cloud information includes: the method comprises the following steps of counting the number of edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives an edge cloud access request, and the probability that each edge cloud in the current area of the vehicle successfully responds to an edge cloud access request.
The fifth aspect of the present application discloses a vehicle-road coordination system, including:
a terminal device for performing the method according to any one of the above first aspects;
a central cloud connected to the vehicle for performing the method of the second aspect;
an edge cloud coupled to the vehicle.
A sixth aspect of the present application discloses a computer readable medium having a computer program stored thereon, wherein the program when executed by a processor implements a method as described in the first aspect above or a method as described in the second aspect above.
As can be seen from the foregoing technical solutions, in the vehicle communication method provided in the embodiment of the present application, the received edge cloud information that is sent by the center cloud and corresponds to the location information of the vehicle includes: the number of the edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request and the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request are determined, so that the randomness that the edge clouds receive and respond to the edge cloud access request is considered in the number n of the edge cloud access requests required to be sent by the terminal equipment according to the edge cloud information, the edge clouds in the current area of the vehicle can be guaranteed to successfully respond to the edge cloud access request, and the reliability of the terminal equipment for obtaining the edge cloud service is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a vehicle-road coordination system disclosed in an embodiment of the present application;
FIG. 2 is a schematic flow chart diagram illustrating a method for vehicle communication according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of another vehicle-road coordination system disclosed in the embodiment of the present application;
fig. 4 is a schematic flowchart of a method for determining the number of edge cloud access requests that a terminal device needs to send according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a vehicle communication interaction process disclosed in an embodiment of the present application;
fig. 6 is a schematic flow chart illustrating a method for obtaining a traffic information service according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a terminal device disclosed in an embodiment of the present application;
fig. 8 is a schematic structural diagram of a center cloud disclosed in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present application discloses a vehicle-road coordination system 100, including: terminal device 101, central cloud 102, and edge cloud 103. The terminal device 101 is a device in a vehicle, and may specifically be a vehicle-mounted computer, a mobile phone of a passenger, and the like. The central cloud 102 is a central server, the central cloud 101 can communicate and interact with the terminal device 101 at any time and any place, the edge cloud 103 is a local server, and the edge cloud in any area can interact with the terminal device 101 only when the terminal device 101 enters the area.
Specifically, in the vehicle-road coordination system 100, the terminal device 101 sends an acquisition request of edge cloud information to the center cloud 102. The acquisition request of the edge cloud information carries the current position information of the vehicle. After receiving the request for obtaining the edge cloud information, the center cloud 102 sends edge cloud information corresponding to the position information of the vehicle to the terminal device 101. Wherein, the edge cloud information includes: the method comprises the following steps of counting the number of edge clouds in an area where a vehicle is located, the probability that each edge cloud in the area where the vehicle is located successfully receives an edge cloud access request, and the probability that each edge cloud in the area where the vehicle is located successfully responds to the edge cloud access request. The terminal device 101 can determine input n of the edge cloud access request to be sent by the terminal device 101 according to the edge cloud information sent by the center cloud 102, and then sends n edge cloud access requests to the edge cloud 103 in the area where the vehicle is located.
In the vehicle-road coordination system 100 provided in the embodiment of the present application, the edge cloud information corresponding to the position information of the vehicle, which is sent by the center cloud 102 and received by the terminal device 101, includes: the method comprises the following steps of counting the number of edge clouds in an area where a vehicle is located, the probability that each edge cloud in the area where the vehicle is located successfully receives an edge cloud access request, and the probability that each edge cloud in the area where the vehicle is located successfully responds to the edge cloud access request. Therefore, the terminal device 101 determines, according to the edge cloud information, that the number n of the edge cloud access requests that the terminal device needs to send takes into account the randomness that the edge cloud receives and responds to the edge cloud access requests, so that it can be ensured that the edge clouds in the area where the vehicle is currently located all successfully respond to the edge cloud access requests, and the reliability of the terminal device 101 obtaining the edge cloud service is further improved.
Specifically, the following describes a vehicle communication process by using several embodiments.
Referring to fig. 2, the embodiment of the application discloses a vehicle communication method, which specifically includes the following steps:
s201, the terminal equipment sends an acquisition request of the edge cloud information to the center cloud.
The acquisition request of the edge cloud information carries the current position information of the vehicle. The current position information of the vehicle may be data of a Global Positioning System (GPS) or other data reflecting the position of the vehicle. The acquisition request of the edge cloud information is used for requesting to acquire the edge cloud information of the current area of the vehicle.
Specifically, at least one edge cloud is installed in each area, and when a vehicle enters one of the areas, the terminal device sends an acquisition request of edge cloud information carrying current position information of the vehicle to the center cloud. For example, referring to fig. 3, a certain city may be divided into X regions, and when a vehicle travels in region 1 of the city, an acquisition request of edge cloud information is sent to the center cloud to acquire information of edge clouds of region 1. When the vehicle runs in the area X, an acquisition request of the edge cloud information is sent to the center cloud so as to acquire the information of the edge cloud of the area X.
It should be noted that parameters such as the number of edge clouds in different areas and the performance of the edge clouds may be the same or different, and the implementation of the embodiment of the present application is not affected. It should also be noted that there may be one or more central clouds. If a plurality of center clouds exist, the terminal device can send an acquisition request of edge cloud information to any one center cloud.
S202, the center cloud sends edge cloud information corresponding to the position information of the vehicle to the terminal device.
The edge cloud information is used for determining the number n of edge cloud access requests required to be sent by the terminal equipment, and n is a positive integer. The edge cloud information includes: the method comprises the following steps of counting the number of edge clouds in an area where a vehicle is located, the probability that each edge cloud in the area where the vehicle is located successfully receives an edge cloud access request, and the probability that each edge cloud in the area where the vehicle is located successfully responds to the edge cloud access request.
Specifically, after receiving the request for acquiring the edge cloud information, the center cloud can determine the edge cloud information of the area where the vehicle is currently located, that is, the edge cloud information corresponding to the position information of the vehicle, according to the current position information of the vehicle carried in the request for acquiring the edge cloud information, and then the edge cloud information corresponding to the position information of the vehicle is sent to the terminal device. For example, referring to fig. 3, when the vehicle travels in the area 1, the terminal device performs step S201 to send a request for acquiring edge cloud information to the center cloud, and after the center cloud receives the request, the terminal device performs step S202 to send the edge cloud information of the area 1 to the terminal device. When the vehicle travels to the area X, the terminal device executes step S201 to send an acquisition request of the edge cloud information to the center cloud, and after the center cloud receives the acquisition request, the terminal device executes step S202 to send the edge cloud information of the area X to the terminal device.
The central cloud determines the corresponding edge cloud information according to the current position information of the vehicle carried in the request for obtaining the edge cloud information in many ways. For example, the central cloud stores the information of the edge clouds in each area in a database in advance, and after receiving an acquisition request of the edge cloud information, the central cloud searches the database by using the current position information of the vehicle to determine the corresponding edge cloud information. The implementation of the embodiment of the present application is not affected by the difference of the manner in which the center cloud determines the corresponding edge cloud information.
Optionally, the request for obtaining the edge cloud information may be a request for obtaining all information of the edge cloud in the area where the vehicle is located, or may be a specific request for obtaining the edge cloud information. For example, the request for acquiring the edge cloud information may be divided into a request for acquiring the number of edge clouds in an area where the vehicle is currently located, a request for acquiring the probability that each edge cloud in the area where the vehicle is currently located successfully receives the edge cloud access request, and a request for acquiring the probability that each edge cloud in the area where the vehicle is currently located successfully responds to the edge cloud access request. The terminal equipment sends the acquisition requests of different parameter values to obtain the parameter values corresponding to the acquisition requests.
The number of edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request, and the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request, which are included in the edge cloud information, can be sent to the terminal device separately or sent to the terminal device in a packaging mode, and the implementation of the embodiment of the application is not affected by the difference of the modes for sending the edge cloud information.
The probability that each edge cloud of the current area of the vehicle successfully receives the edge cloud access request refers to the probability that the edge cloud of the current area receives the edge cloud access request sent by the terminal device, namely the probability that the edge cloud access request successfully reaches the edge cloud. The edge cloud access request is used for requesting to access the edge cloud, namely requesting to establish communication with the edge cloud. When the terminal device sends an edge cloud access request to an edge cloud of a current area, the edge cloud access request may be successfully received by any edge cloud of the area. The edge cloud access request can be received by only one edge cloud, and the probability that the edge cloud access request reaches any one edge cloud of the area is equal. The probability that each edge cloud of the area where the vehicle is currently located successfully receives the edge cloud access request indicates the randomness of the edge cloud being successfully received. The probability that each edge cloud of the current area of the vehicle successfully receives the edge cloud access request is generally related to the network environment of the current area, the performance of the edge cloud itself, and the like. The probability that each edge cloud of the current area of the vehicle successfully receives the edge cloud access request can be obtained through a test in advance, and the probability that each edge cloud of the current area of the vehicle successfully receives the edge cloud access request, which is obtained through the final test, is stored in the center cloud.
The probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request refers to the probability that the edge cloud responds to the access request and successfully sends the identification information of the edge cloud to the terminal device. After a certain edge cloud successfully responds, the terminal device can successfully acquire the identification information of the edge cloud, and then can establish communication with the edge cloud by using the identification information of the edge cloud. Wherein an edge cloud access request can only be successfully responded once by the edge cloud receiving the request. The probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request is related to the performance of the edge cloud and other factors, and can be obtained by testing the edge cloud in advance.
The probability that each edge cloud of the area where the vehicle is located successfully receives the edge cloud access request and the probability that each edge cloud of the area where the vehicle is located successfully responds to the edge cloud access request indicate that the edge clouds successfully receive and respond to the edge cloud access request, and the probability indicates that the edge clouds have randomness. That is, one edge cloud access request may be successfully received and responded by any edge cloud in the area, or may not be successfully received or successfully responded by any edge cloud, and a plurality of edge cloud access requests may not be successfully received and responded by all edge clouds, and there is also a possibility that one edge cloud succeeds and responds to a plurality of edge cloud access requests.
S203, the terminal device determines the number n of edge cloud access requests required to be sent by the terminal device according to the edge cloud information.
Wherein n is a positive integer. The terminal device determines the number n of the edge cloud access requests required to be sent by the terminal device according to the number of the edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request and the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request, wherein the number is sent by the center cloud.
In the prior art, a center cloud only sends information of the number of edge clouds in an area where a vehicle of a terminal device is located, and does not send the probability that each edge cloud in the area where the vehicle is located successfully receives an edge cloud access request and the probability that each edge cloud in the area where the vehicle is located successfully responds to the edge cloud access request.
Specifically, in the prior art, the number of edge clouds in an area where a center cloud sends a terminal device vehicle is currently is L, and the terminal device sends L edge cloud access requests to the edge clouds in the current area, however, the edge cloud access requests are not necessarily all capable of being received and responded, and L edge cloud access requests are not necessarily received and responded by L edge clouds, and there may be a request that a plurality of edge cloud access requests are received by the same edge cloud, and therefore sending L edge cloud requests cannot guarantee that L edge clouds in the current area can be successfully received and responded.
In the embodiment of the application, the number n of the edge cloud access requests required to be sent by the terminal device is obtained according to the number of the edge clouds of the current area where the vehicle is located, the probability that each edge cloud of the current area where the vehicle is located successfully receives the edge cloud access request, and the probability that each edge cloud of the current area where the vehicle is located successfully responds to the edge cloud access request, so that the determined n considers the randomness of the edge cloud receiving the edge cloud access request and responding to the edge cloud access request, and the edge clouds of the area where the vehicle is located can be guaranteed to successfully respond to the edge cloud access request.
Optionally, referring to fig. 4, in a specific embodiment of the present application, the terminal device executes an implementation manner of step S203, where the implementation manner includes:
s401, calculating to obtain a number threshold N of edge cloud access requests at least needing to be sent by the terminal device according to the number of times that a preset edge cloud needs to successfully respond and the edge cloud information sent by the center cloud.
The preset number u of times that one edge cloud needs to successfully respond refers to the number of times that one edge cloud needs to successfully respond to the edge cloud access request, and represents that it is expected that any edge cloud in the current area can successfully receive and respond to u edge cloud access requests. For example, the current region has three edge clouds, i.e., an edge cloud a, an edge cloud B, and an edge cloud C, and when u is set to 2, it indicates that it is desired that the edge cloud a successfully responds 2 times, the edge cloud B successfully responds 2 times, and the edge cloud C successfully responds 2 times.
Although the terminal device can communicate with the edge cloud as long as one edge cloud successfully responds once, the greater the number of times that the edge cloud can successfully respond to the edge cloud access request, the higher the reliability of the edge cloud, that is, the higher the reliability that the terminal device successfully acquires the service information from the edge cloud. The number threshold N of the edge cloud access requests that the terminal device needs to send, which is calculated in step S401, can satisfy that any one edge cloud in the area can successfully respond u times.
Optionally, in a specific embodiment of the present application, the number u of times that the preset edge cloud needs to respond successfully may be set according to the reliability of the edge cloud in the area where the vehicle is currently located.
The reliability of the edge cloud of the current area of the vehicle is used for explaining the reliability of the terminal device for acquiring the edge cloud service in the current area. The reliability of the edge cloud is obtained according to the number of the edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request, and the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request. The more the number of the edge clouds in the current area of the vehicle is, the greater the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request is, and the greater the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request is, the higher the probability that the terminal device successfully acquires the service of the edge cloud in the current area is, and then the smaller the u value can be set. The smaller the number of edge clouds in the current area of the vehicle is, the smaller the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request is, and the smaller the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request is, the lower the probability that the terminal device successfully acquires the service of the edge cloud in the current area is.
Optionally, the reliability of the edge cloud of the area where the vehicle is currently located may be a product of the number of edge clouds of the area where the vehicle is currently located, a probability that each edge cloud of the area where the vehicle is currently located successfully receives the edge cloud access request, and a probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access request. The number of times that the corresponding edge cloud needs to successfully respond can be set for the value of the edge cloud reliability of the area where the vehicle is located. The smaller the value of the reliability of the edge cloud in the current area of the vehicle is, the larger the value of the number u of times that the edge cloud needs to respond successfully is.
Specifically, referring to fig. 5, after the terminal device receives the edge cloud information of the current area sent by the center cloud, the number u of times that one edge cloud needs to successfully respond is automatically set according to the number of edge clouds in the area where the vehicle is currently located, the probability that each edge cloud in the area where the vehicle is currently located successfully receives the edge cloud access request, and the probability that each edge cloud in the area where the vehicle is currently located successfully responds to the edge cloud access request. There are many ways for the terminal device to set the value u by itself, including but not limited to those mentioned in the embodiments of the present application. For example, the corresponding relationship between the edge cloud reliability and the u value may be preset, the edge cloud reliability may be calculated after the edge cloud information is obtained, and the u value corresponding to the reliability may be matched and set. For another example, the terminal device informs the current edge cloud reliability to a user on the vehicle, the user sets the u value according to the edge cloud reliability, and the terminal device responds to the operation of the user to complete the setting of the u value.
It should be noted that step S401 may be performed by the central cloud in addition to the terminal device. Specifically, the center cloud may obtain the edge cloud information of the position information of the vehicle according to the edge cloud information obtaining request sent by the terminal device, and then may calculate a number threshold N of the edge cloud access requests that the terminal device needs to send at least according to the number of edge clouds in the area where the vehicle is currently located in the edge cloud information, the probability that each edge cloud in the area where the vehicle is currently located successfully receives the edge cloud access request, and the probability that each edge cloud in the area where the vehicle is currently located successfully responds to the edge cloud access request, and then sends the number threshold N to the terminal device, and then the terminal device may execute step S402 according to the number threshold N.
Optionally, in a specific embodiment of the present application, the implementation of step S401 performed by the terminal device includes:
substituting the number of times that one edge cloud needs to successfully respond, the number of edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request and the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request into a first formula, and calculating to obtain the number threshold value N of the edge cloud access requests at least needing to be sent by the terminal equipment.
Wherein the first formula is:
Figure BDA0002419170710000131
u is the number of times that an edge cloud needs to successfully respond; b is the number of edge clouds in the current area of the vehicle, p is the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request, and q is the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request; u and b are both positive integers.
Specifically, the process of obtaining the first formula is as follows: the method comprises the steps of firstly solving the probability that each edge cloud access request sent by a terminal device can be successfully received by a certain edge cloud and the edge cloud can successfully respond to the request, further solving the probability that the edge cloud can successfully respond for u times, then solving the number of edge cloud access requests which should be sent to enable the edge cloud to successfully respond to the u times, finally solving the number of edge cloud access requests which should be sent to enable all the edge clouds to successfully respond to the u times, and pushing to obtain a first formula.
S402, determining the number N of the edge cloud access requests required to be sent by the terminal equipment according to the number threshold N of the edge cloud access requests required to be sent by the terminal equipment at least.
Wherein N is greater than or equal to N. According to N calculated in step S401, it is stated that in order to enable any edge cloud in the area where the current vehicle is located to successfully respond u times, the terminal device at least needs to send N edge cloud access requests, and therefore the number N of edge cloud access requests that the terminal device needs to send is a positive integer greater than N.
The specific manner of executing step S402 is many, for example, N may be equal to N +2, and N values are set to be 2 greater than N, so as to further ensure that any edge cloud in the area where the current vehicle is located can successfully respond u times. For another example, the value of N may be determined according to an actual application scenario, and if the current network environment is poor, in order to improve the efficiency of communication with the edge cloud, the value of N may be set to be smaller, so that N is equal to N. The implementation manner for executing step S402 includes, but is not limited to, what is proposed in the examples of the present application.
And S204, the terminal equipment sends n edge cloud access requests to the edge cloud of the area where the vehicle is located.
The edge cloud access request is used for requesting communication with an edge cloud. The edge cloud access request carries identification information of the terminal device. The number n of the edge cloud requests sent by the terminal device is obtained according to the number of the edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request, and the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request, and the randomness that the edge cloud access request is successfully received and responded is considered, so that the n sent edge cloud access requests can guarantee that all the edge clouds in the current area can successfully respond to the edge cloud access request.
Optionally, referring to fig. 6, in an embodiment of the present application, after the terminal device performs step S204, the method further includes:
s601, receiving response information sent by the edge cloud of the area where the vehicle is located.
And the response information carries identification information of the edge cloud. The identification information of the edge cloud may be a port of the edge cloud, an Internet Protocol (IP) address, and the like.
Specifically, referring to fig. 5, after the terminal device sends n edge cloud access requests to the edge cloud in the current area, the edge cloud in the current area receives and responds to the edge cloud access request, and sends the identification information of the edge cloud itself to the terminal device by using the identification information of the terminal device carried in the edge cloud access request. And sending the response information of the edge cloud to the terminal equipment once when the edge cloud successfully responds to the edge cloud request. Therefore, there are multiple pieces of response information received by the terminal device in step S601, and the identification information of multiple different edge clouds in the current area can be obtained in step S601.
If the terminal device has the number u of times that a block of edge clouds needs to respond successfully and the number of the edge clouds in the current area of the vehicle is b, theoretically, the terminal device will receive at least b × u pieces of response information, and the response information is sent by the b block of edge clouds in the current area.
And S602, sending a road condition service request to the edge cloud of the area where the vehicle is located by using the identification information of the edge cloud.
The road condition service request is used for requesting to acquire road condition information of an area where the current vehicle is located. The road condition information may include road surface wet smoothness, visibility, traffic condition, and the like. After the terminal equipment obtains the road condition information, the road condition information can be displayed to a user on the vehicle, and then the user can drive the vehicle according to the road condition information. Since the response information acquired in step S601 comes from a plurality of different edge clouds in the current area, the terminal device obtains identification information of the plurality of different edge clouds. When step S602 is executed, the road condition service request may be sent to each edge cloud having obtained the identification information, or the identification information of at least one edge cloud may be selected from the identification information of the plurality of edge clouds, and the road condition service request is sent to the selected edge cloud.
Optionally, in a specific embodiment of the present application, after the step S601 is executed, the method further includes:
and selecting the edge cloud with the maximum successful response times in the area where the vehicle is located according to the received response information sent by the edge cloud in the area where the vehicle is located.
The more the number of successful response times of the edge cloud is, the higher the reliability of the edge cloud is, and the higher the possibility that the terminal device successfully acquires the road condition service information from the edge cloud is. Therefore, after step S601 is executed, the response times of the edge cloud in the area where the edge cloud is located may be counted, and the edge cloud with the largest successful response times is used as the edge cloud with which communication is performed.
When the terminal device executes step S602, the method includes: and sending the road condition service request to the edge cloud with the maximum successful response times in the area where the vehicle is located by utilizing the identification information of the edge cloud with the maximum successful response times in the area where the vehicle is located.
And S603, receiving road condition service information sent by the edge cloud of the area where the vehicle is located.
The road condition service information received by the terminal device may be sent by one of the edge clouds in the area where the terminal device is located, or sent by a plurality of edge clouds in the area where the terminal device is located. After receiving the road condition service information, the terminal device displays the road condition service information to a user on the vehicle, and the user can know the road condition of the current area according to the road condition service information and drive the vehicle by using the acquired road condition service information.
Alternatively, after the step S601 is executed, if the terminal device selects the edge cloud with the largest number of successful responses in the area where the vehicle is located according to the received response information sent by the edge cloud in the area where the vehicle is located, when the step S603 is executed, the terminal device receives the traffic service information sent by the edge cloud with the largest number of successful responses in the area where the vehicle is located.
It should be noted that, the vehicle communication method provided in the embodiment of the present application can be applied to not only the driving process of the user but also the automatic driving technology. The automatic driving technology generally comprises technologies such as high-precision maps, environment perception, behavior decision, path planning, motion control and the like, and the self-determined driving technology has wide application prospects. The automatic driving technology relates to tacit cooperation between people and vehicles, between vehicles and vehicles, and between vehicles and roads, so that the vehicle communication method provided by the embodiment of the application is applied to the automatic driving technology and can help realize cooperative cooperation between vehicles and roads.
In the vehicle communication method provided in the embodiment of the present application, the received edge cloud information that is sent by the center cloud and corresponds to the position information of the vehicle includes: the number of the edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request and the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request are determined, so that the randomness that the edge clouds receive and respond to the edge cloud access request is considered in the number n of the edge cloud access requests required to be sent by the terminal equipment according to the edge cloud information, the edge clouds in the current area of the vehicle can be guaranteed to successfully respond to the edge cloud access request, and the reliability of the terminal equipment for obtaining the edge cloud service is improved.
Referring to fig. 7, based on the vehicle communication method provided in the embodiment of the present application, the embodiment of the present application correspondingly discloses a terminal device 700, which includes: a first transmitting unit 701, a first receiving unit 702, a determining unit 703, and a second transmitting unit 704.
A first sending unit 701, configured to send an acquisition request of edge cloud information to a center cloud. The acquisition request of the edge cloud information carries the current position information of the vehicle.
A first receiving unit 702, configured to receive edge cloud information corresponding to the location information of the vehicle, which is sent by the center cloud. Wherein, the edge cloud information includes: the method comprises the following steps that the number of edge clouds in an area where a vehicle is located currently, the probability that each edge cloud in the area where the vehicle is located successfully receives an edge cloud access request, and the probability that each edge cloud in the area where the vehicle is located successfully responds to the edge cloud access request;
a determining unit 703, configured to calculate, according to the number of times that a preset edge cloud needs to successfully respond and edge cloud information sent by a center cloud, a number threshold N of edge cloud access requests that a terminal device at least needs to send; n is a positive integer; and determining the number N of the edge cloud access requests required to be sent by the terminal equipment according to the number threshold N of the edge cloud access requests at least required to be sent by the terminal equipment. Wherein N is greater than or equal to N.
Optionally, in a specific embodiment of the present application, the number of times that one edge cloud needs to respond successfully is set according to the reliability of the edge cloud in the area where the vehicle is currently located. The reliability of the edge cloud of the current area of the vehicle is used for explaining the reliability of the terminal device for acquiring the edge cloud service in the current area, and the reliability of the edge cloud is obtained according to the number of the edge clouds of the current area of the vehicle, the probability of each edge cloud of the current area of the vehicle successfully receiving the edge cloud access request and the probability of each edge cloud of the current area of the vehicle successfully responding to the edge cloud access request.
Optionally, in a specific embodiment of the present application, the determining unit 703 calculates, according to the number of times that the preset edge cloud needs to successfully respond and the edge cloud information sent by the center cloud, a number threshold N of at least edge cloud access requests that the terminal device needs to send, to be used for:
substituting the number of times that one edge cloud needs to successfully respond, the number of edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request and the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request into a first formula, and calculating to obtain the number threshold value N of the edge cloud access requests at least needing to be sent by the terminal equipment.
Wherein the first formula is:
Figure BDA0002419170710000171
u is the number of times that an edge cloud needs to successfully respond; b is the number of edge clouds in the current area of the vehicle, p is the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request, and q is the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request; u and b are both positive integers.
A second sending unit 704, configured to send n edge cloud access requests to an edge cloud of an area where the vehicle is located.
Optionally, in a specific embodiment of the present application, the terminal device 700 further includes: a second receiving unit, a third transmitting unit, and a third receiving unit.
And the second receiving unit is used for receiving response information sent by the edge cloud of the area where the vehicle is located. And the response information carries identification information of the edge cloud.
And a third sending unit, configured to send the road condition service request to the edge cloud of the area where the vehicle is located by using the identification information of the edge cloud.
And the third receiving unit is used for receiving the road condition service information sent by the edge cloud of the area where the vehicle is located.
Optionally, in a specific embodiment of the present application, the terminal device 700 further includes:
and the selecting unit is used for selecting the edge cloud with the highest successful response frequency in the area where the vehicle is located according to the received response information sent by the edge cloud in the area where the vehicle is located.
Wherein, the third sending unit includes:
and the third sending subunit is used for sending the road condition service request to the edge cloud with the maximum successful response times in the area where the vehicle is located by using the identification information of the edge cloud with the maximum successful response times in the area where the vehicle is located.
A third receiving unit comprising:
and the third receiving subunit is used for receiving the road condition service information sent by the edge cloud with the largest number of successful response times in the area where the vehicle is located.
The specific principle and the implementation process of the units and the sub-units in the terminal device 700 of the information disclosed in the embodiment of the present application are the same as those of the vehicle communication method disclosed in the embodiment of the present application, and reference may be made to corresponding parts in the vehicle communication method disclosed in the embodiment of the present application, which are not described herein again.
In the terminal device 700 provided in the embodiment of the present application, the edge cloud information corresponding to the position information of the vehicle, which is sent by the center cloud and received by the first receiving unit 702, includes: the number of edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request, and the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request, so that the determining unit 703 determines the number n of the edge cloud access requests to be sent by the terminal device according to the edge cloud information, the randomness that the edge clouds receive and respond to the edge cloud access requests is considered, the edge clouds in the current area of the vehicle can be guaranteed to successfully respond to the edge cloud access requests, and the reliability of the terminal device for obtaining the edge cloud service is improved.
Referring to fig. 8, based on the vehicle communication method provided in the embodiment of the present application, the embodiment of the present application further discloses a center cloud 800, which includes: a receiving unit 801 and a transmitting unit 802.
The receiving unit 801 is configured to receive an acquisition request of edge cloud information sent by a terminal device. The acquisition request of the edge cloud information carries the current position information of the vehicle.
A sending unit 802, configured to send edge cloud information corresponding to the location information of the vehicle to the terminal device. The edge cloud information is used for determining the number n of edge cloud access requests required to be sent by the terminal equipment, and n is a positive integer. The edge cloud information includes: the method comprises the following steps of counting the number of edge clouds in an area where a vehicle is located, the probability that each edge cloud in the area where the vehicle is located successfully receives an edge cloud access request, and the probability that each edge cloud in the area where the vehicle is located successfully responds to the edge cloud access request.
The specific principle and the implementation process of the units and the sub-units in the center cloud 800 of information disclosed in the embodiment of the present application are the same as those of the vehicle communication method disclosed in the embodiment of the present application, and reference may be made to corresponding parts in the vehicle communication method disclosed in the embodiment of the present application, which are not described herein again.
In the center cloud 800 provided in the embodiment of the present application, the edge cloud information corresponding to the position information of the vehicle, which is sent by the sending unit 802, includes: the number of the edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request and the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request are determined, so that the randomness that the edge clouds receive and respond to the edge cloud access request is considered in the number n of the edge cloud access requests required to be sent by the terminal equipment according to the edge cloud information, the edge clouds in the current area of the vehicle can be guaranteed to successfully respond to the edge cloud access request, and the reliability of the terminal equipment for obtaining the edge cloud service is improved.
The embodiment of the application provides a computer readable medium, wherein a computer program is stored on the computer readable medium, and the computer program is used for realizing the vehicle communication method provided by the method embodiments when being executed by a processor.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
As will be appreciated by one skilled in the art, 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 above description is only for the purpose of illustrating the preferred embodiments of the present application and the technical principles applied, and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. The scope of the invention according to the present application is not limited to the specific combinations of the above-described features, and may also cover other embodiments in which the above-described features or their equivalents are arbitrarily combined without departing from the spirit of the invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims (10)

1. A vehicle communication method, comprising:
sending an acquisition request of edge cloud information to a central cloud; the obtaining request of the edge cloud information carries the current position information of the vehicle;
receiving edge cloud information which is sent by the center cloud and corresponds to the position information of the vehicle; wherein the edge cloud information includes: the number of edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives an edge cloud access request, and the probability that each edge cloud in the current area of the vehicle successfully responds to an edge cloud access request;
calculating to obtain a number threshold N of edge cloud access requests at least needing to be sent by the terminal equipment according to the preset number of times that the edge cloud needs to successfully respond and the edge cloud information sent by the center cloud; wherein N is a positive integer;
determining the number N of the edge cloud access requests required to be sent by the terminal equipment according to the number threshold N of the edge cloud access requests at least required to be sent by the terminal equipment; wherein N is greater than or equal to N;
and sending n edge cloud access requests to an edge cloud of the area where the vehicle is located.
2. The method according to claim 1, wherein the number of times the edge cloud needs to respond successfully is set according to the reliability of the edge cloud in the area where the vehicle is currently located; the reliability of the edge cloud of the current area of the vehicle is used for explaining the reliability of the terminal equipment for acquiring the edge cloud service in the current area; the reliability of the edge cloud is obtained according to the number of the edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request, and the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request.
3. The method according to claim 1, wherein the calculating to obtain the threshold N of the number of the edge cloud access requests that the terminal device at least needs to send according to the preset number of times that the edge cloud needs to successfully respond and the edge cloud information sent by the center cloud comprises:
substituting the number of times that the edge cloud needs to successfully respond, the number of edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request and the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request into a first formula, and calculating to obtain a number threshold N of the edge cloud access requests at least needing to be sent by the terminal equipment;
wherein the first formula is:
Figure FDA0002419170700000021
u is the number of times of successful response of the edge cloud; b is the edge cloud number of the current area of the vehicleThe method comprises the steps that p is the probability that each edge cloud in an area where a vehicle is located successfully receives an edge cloud access request, and q is the probability that each edge cloud in the area where the vehicle is located successfully responds to the edge cloud access request; u and b are both positive integers.
4. The method of claim 1, wherein after sending the n edge cloud access requests to the edge cloud of the area in which the vehicle is located, further comprising:
receiving response information sent by an edge cloud of an area where the vehicle is located; wherein the response information carries identification information of the edge cloud;
sending a road condition service request to the edge cloud of the area where the vehicle is located by using the identification information of the edge cloud;
and receiving road condition service information sent by the edge cloud of the area where the vehicle is located.
5. The method of claim 4, wherein after receiving the response information sent by the edge cloud of the area where the vehicle is located, the method further comprises:
selecting the edge cloud with the largest number of successful response times in the area where the vehicle is located according to the received response information sent by the edge cloud in the area where the vehicle is located;
the sending of the road condition service request to the edge cloud of the area where the vehicle is located by using the identification information of the edge cloud includes:
sending a road condition service request to the edge cloud with the highest successful response times in the area where the vehicle is located by utilizing the identification information of the edge cloud with the highest successful response times in the area where the vehicle is located;
the receiving of the road condition service information sent by the edge cloud of the area where the vehicle is located includes:
and receiving the road condition service information sent by the edge cloud with the largest successful response times in the area where the vehicle is located.
6. A vehicle communication method, comprising:
receiving an acquisition request of edge cloud information sent by terminal equipment; the obtaining request of the edge cloud information carries the current position information of the vehicle;
sending edge cloud information corresponding to the position information of the vehicle to the terminal device; the edge cloud information is used for determining the number n of edge cloud access requests required to be sent by the terminal equipment; n is a positive integer; the edge cloud information includes: the method comprises the following steps of counting the number of edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives an edge cloud access request, and the probability that each edge cloud in the current area of the vehicle successfully responds to an edge cloud access request.
7. A terminal device, comprising:
the system comprises a first sending unit, a second sending unit and a central cloud computing unit, wherein the first sending unit is used for sending an acquisition request of edge cloud information to the central cloud; the obtaining request of the edge cloud information carries the current position information of the vehicle;
a first receiving unit, configured to receive edge cloud information corresponding to the position information of the vehicle, which is sent by the center cloud; wherein the edge cloud information includes: the number of edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives an edge cloud access request, and the probability that each edge cloud in the current area of the vehicle successfully responds to an edge cloud access request;
the determining unit is used for calculating to obtain a threshold value N of the number of edge cloud access requests at least needing to be sent by the terminal equipment according to the number of times that a preset edge cloud needs to successfully respond and the edge cloud information sent by the center cloud; wherein N is a positive integer; determining the number N of the edge cloud access requests required to be sent by the terminal equipment according to the number threshold N of the edge cloud access requests at least required to be sent by the terminal equipment; wherein N is greater than or equal to N;
and the second sending unit is used for sending the n edge cloud access requests to the edge cloud of the area where the vehicle is located.
8. A central cloud, comprising:
the receiving unit is used for receiving an acquisition request of the edge cloud information sent by the terminal equipment; the obtaining request of the edge cloud information carries the current position information of the vehicle;
a transmitting unit configured to transmit edge cloud information corresponding to the position information of the vehicle to the terminal device; the edge cloud information is used for determining the number n of edge cloud access requests required to be sent by the terminal equipment; n is a positive integer; the edge cloud information includes: the method comprises the following steps of counting the number of edge clouds in the current area of the vehicle, the probability that each edge cloud in the current area of the vehicle successfully receives an edge cloud access request, and the probability that each edge cloud in the current area of the vehicle successfully responds to an edge cloud access request.
9. A vehicle-road coordination system, comprising:
a terminal device for performing the method of any one of claims 1 to 5;
a central cloud coupled to the vehicle for performing the method of claim 6;
an edge cloud coupled to the vehicle.
10. A computer-readable medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the method of any one of claims 1 to 5, or the method of claim 6.
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