CN111405467B - Vehicle communication method, vehicle-road cooperation system, related device, and readable medium - Google Patents

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

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Publication number
CN111405467B
CN111405467B CN202010200421.4A CN202010200421A CN111405467B CN 111405467 B CN111405467 B CN 111405467B CN 202010200421 A CN202010200421 A CN 202010200421A CN 111405467 B CN111405467 B CN 111405467B
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edge cloud
vehicle
area
edge
information
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CN111405467A (en
Inventor
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 is characterized in that an acquisition request of edge cloud information is sent; receiving edge cloud information corresponding to position information of a vehicle; edge cloud information, comprising: the method comprises the steps of determining the number of edge clouds of an area where a vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located successfully receives an edge cloud access request, and the probability that the edge clouds successfully respond to the edge cloud access request; according to the edge cloud information, determining the number n of edge cloud access requests to be sent by the terminal equipment; and sending n edge cloud access requests to the edge cloud of the area where the vehicle is located. According to the method and the device for determining the number n of the edge cloud access requests to be sent by the terminal equipment according to the edge cloud information, randomness of the edge cloud in response to the edge cloud access requests is considered, so that the edge cloud of the current area of the vehicle can be ensured to successfully respond to the edge cloud access requests.

Description

Vehicle communication method, vehicle-road cooperation system, related device, and readable medium
Technical Field
The application relates to the technical field of internet of vehicles, in particular to a vehicle communication method, a vehicle-road cooperative system, related equipment and a readable medium.
Background
The intelligent vehicle-road coordination system is a system for acquiring vehicle and road information based on wireless communication, internet and other technologies and realizing information interaction and sharing through vehicle-vehicle and vehicle-road communication, thereby realizing intelligent coordination and coordination between vehicles and road side facilities.
In the existing vehicle-road cooperative system, terminal equipment on a vehicle needs to perform communication interaction with an edge cloud of an area where the vehicle is located so as to obtain road condition information service provided by the edge cloud. Specifically, a terminal device on a vehicle acquires the number b of edge clouds of a current area from a central cloud, and then sends b edge cloud access requests to establish communication with the edge clouds of the current area. However, due to factors such as network environment and performance of the edge cloud device, the b access requests sent by the terminal device on the vehicle cannot be received and responded successfully by the b edge clouds, so that the reliability of acquiring the edge cloud service by the terminal device on the vehicle is lower.
Disclosure of Invention
Based on the defects of the prior art, the application discloses a vehicle communication method, a vehicle-road cooperative system, related equipment and a readable medium, so as to realize that edge clouds of the current area of a vehicle can successfully respond to an edge cloud access request, and the reliability of acquiring edge cloud services by terminal equipment on the vehicle is improved.
The first aspect of the application discloses a vehicle communication method, comprising the following steps:
sending an acquisition request of the edge cloud information to the center cloud; the request for acquiring the edge cloud information carries 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 of the area where the vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located successfully receives an edge cloud access request, and the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access request;
according to the number of times that a preset piece of edge cloud needs to respond successfully and the edge cloud information sent by the center cloud, calculating to obtain a threshold N of the number of edge cloud access requests which are at least needed to be sent by the terminal equipment; wherein N is a positive integer;
determining the number N of the edge cloud access requests to be sent by the terminal equipment according to the threshold N of the number of the edge cloud access requests to be sent by the terminal equipment; wherein N is greater than or equal to N;
and sending n edge cloud access requests to the 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 edge cloud reliability is obtained 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 an 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.
Optionally, in the vehicle communication method, the calculating, according to the number of times that the preset edge cloud needs to respond successfully and the edge cloud information sent by the center cloud, the number threshold N of the edge cloud access requests that the terminal device needs to send at least includes:
substituting the number of times that the edge cloud needs to successfully respond, the number of the edge clouds of the area where the vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located successfully receives an edge cloud access request, and the probability that each edge cloud of the area where the vehicle is currently located 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 which are at least required to be sent by terminal equipment;
Wherein, the first formula is:u is the number of times the edge cloud needs to respond successfully; b is the number of edge clouds of the area where the vehicle is currently located, p is the probability that each edge cloud of the area where the vehicle is currently located successfully receives an edge cloud access request, and q is the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access request; u and b are 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 the edge cloud of the area where the vehicle is located; the response information carries identification information of the edge cloud;
transmitting a road condition service request to the edge cloud of the area where the vehicle is located by utilizing 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 the response information sent by the edge cloud of the area where the vehicle is located, the method further includes:
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 of the area where the vehicle is located;
The sending, by using the identification information of the edge cloud, a road condition service request to the edge cloud of the area where the vehicle is located includes:
transmitting a road condition service request to the edge cloud with the largest successful response times in the area of the vehicle by using the identification information of the edge cloud with the largest successful response times in the area of the vehicle;
the receiving the road condition service information sent by the edge cloud of the area where the vehicle is located comprises the following steps:
and receiving road condition service information sent by the edge cloud with the largest successful response times in the area where the vehicle is located.
The second aspect of the application discloses a vehicle communication method, comprising the following steps:
receiving an acquisition request of edge cloud information sent by terminal equipment; the request for acquiring the edge cloud information carries current position information of the vehicle;
transmitting edge cloud information corresponding to the position information of the vehicle to the terminal equipment; the edge cloud information is used for determining the number n of edge cloud access requests to be sent by the terminal equipment; n is a positive integer; the edge cloud information includes: the method comprises the steps of enabling the number of edge clouds of an area where a vehicle is currently located to be, enabling each edge cloud of the area where the vehicle is currently located to successfully receive an edge cloud access request, and enabling each edge cloud of the area where the vehicle is currently located to successfully respond to the edge cloud access request.
The third aspect of the present application discloses a terminal device, comprising:
the first sending unit is used for sending an acquisition request of the edge cloud information to the center cloud; the request for acquiring the edge cloud information carries current position information of the vehicle;
the first receiving unit is used for 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 of the area where the vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located successfully receives an edge cloud access request, and the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access request;
the determining unit is used for calculating and obtaining a number threshold N of the edge cloud access requests which are at least required to be sent by the terminal equipment according to the number of times of successful response of a preset piece of edge cloud 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 to be sent by the terminal equipment according to the threshold N of the number of the edge cloud access requests 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 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 edge cloud reliability is obtained 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 an 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.
Optionally, in the above terminal device, the determining unit calculates, according to the number of times that a preset piece of edge cloud needs to respond successfully and the edge cloud information sent by the center cloud, a threshold N of the number of edge cloud access requests that the terminal device needs to send at least, where the threshold N is used for:
substituting the number of times that the edge cloud needs to successfully respond, the number of the edge clouds of the area where the vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located successfully receives an edge cloud access request, and the probability that each edge cloud of the area where the vehicle is currently located 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 which are at least required to be sent by terminal equipment;
Wherein, the first formula is:u is the number of times the edge cloud needs to respond successfully; b is the number of edge clouds of the area where the vehicle is currently located, p is the probability that each edge cloud of the area where the vehicle is currently located successfully receives an edge cloud access request, and q is the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access request; u and b are positive integers.
Optionally, in the above terminal device, 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; the response information carries identification information of the edge cloud;
the third sending unit is used for sending a road condition service request to the edge cloud of the area where the vehicle is located by utilizing 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 above terminal device, 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 of the area where the vehicle is located;
Wherein the third transmitting unit includes:
the third sending subunit is used for sending a road condition service request to the edge cloud with the largest successful response times in the area where the vehicle is located by utilizing the identification information of the edge cloud with the largest 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 successful response times in the area where the vehicle is located.
A fourth aspect of the application discloses 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 request for acquiring the edge cloud information carries current position information of the vehicle;
a transmitting unit configured to transmit edge cloud information corresponding to 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 to be sent by the terminal equipment; n is a positive integer; the edge cloud information includes: the method comprises the steps of enabling the number of edge clouds of an area where a vehicle is currently located to be, enabling each edge cloud of the area where the vehicle is currently located to successfully receive an edge cloud access request, and enabling each edge cloud of the area where the vehicle is currently located to successfully respond to the edge cloud access request.
The fifth aspect of the present application discloses a vehicle-road cooperative system, comprising:
a terminal device for performing the method according to any of the first aspects above;
a central cloud associated with the vehicle for performing the method of the second aspect described above;
an edge cloud associated with the vehicle.
A sixth aspect of the application discloses a computer readable medium having stored thereon a computer program, 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 above technical solution, in the vehicle communication method provided by the embodiment of the present application, because the received edge cloud information sent by the center cloud and corresponding to the position information of the vehicle includes: the number n of the edge cloud access requests to be sent by the terminal equipment is determined according to the edge cloud information, the randomness of the edge cloud receiving and responding the edge cloud access requests is considered, the edge cloud of the area where the vehicle is located can be ensured to successfully respond the edge cloud access requests, and the reliability of the terminal equipment for acquiring the edge cloud service is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a vehicle-road cooperative system according to an embodiment of the present application;
FIG. 2 is a schematic flow chart of a vehicle communication method according to an embodiment of the present application;
FIG. 3 is a schematic diagram of another vehicle-road cooperative system according to an embodiment of the present application;
fig. 4 is a flow chart of a method for determining the number of edge cloud access requests to be sent by a terminal device according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a vehicle communication interaction process according to an embodiment of the present application;
FIG. 6 is a flowchart of a method for obtaining traffic information service according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a central cloud 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, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1, an embodiment of the present application discloses a vehicle-road cooperation system 100, including: terminal equipment 101, center cloud 102, and edge cloud 103. The terminal device 101 is a device on a vehicle, and may specifically be a vehicle-mounted computer, a mobile phone of a passenger, or the like. The central cloud 102 is a central server, the central cloud 101 can perform communication interaction with the terminal device 101 at any time and any place, the edge cloud 103 is a local server, and the edge cloud of any area can only perform interaction with the terminal device 101 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 the edge cloud information to the center cloud 102. The request for acquiring the edge cloud information carries current position information of the vehicle. After receiving the request for acquiring the edge cloud information, the center cloud 102 sends the edge cloud information corresponding to the position information of the vehicle to the terminal device 101. Wherein, edge cloud information includes: the method comprises the steps of determining the number of edge clouds of an area where a vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located successfully receives an edge cloud access request, and the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access request. According to the edge cloud information sent by the center cloud 102, the terminal device 101 can determine the input n of the edge cloud access request to be sent by the terminal device 101, and then send n edge cloud access requests to the edge cloud 103 of the area where the vehicle is located.
In the vehicle-road collaboration system 100 provided in the embodiment of the present application, edge cloud information corresponding to position information of a vehicle, which is sent by the center cloud 102 and received by the terminal device 101, includes: the method comprises the steps of determining the number of edge clouds of an area where a vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located successfully receives an edge cloud access request, and the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access request. Therefore, according to the edge cloud information, the number n of the edge cloud access requests to be sent by the terminal equipment is determined by the terminal equipment, and the randomness of the edge cloud receiving and responding to the edge cloud access requests is considered, so that the edge cloud of the current area of the vehicle can be ensured to successfully respond to the edge cloud access requests, and the reliability of the terminal equipment 101 for acquiring the edge cloud service is further improved.
Specifically, the vehicle communication process is described below by way of several embodiments.
Referring to fig. 2, the embodiment of the application discloses a vehicle communication method, which specifically comprises the following steps:
s201, the terminal equipment sends an acquisition request of the edge cloud information to the center cloud.
The request for acquiring the edge cloud information carries current position information of the vehicle. The current location information of the vehicle may be data of a global positioning system (Global Positioning System, GPS) or other data reflecting its own location. The request for acquiring the edge cloud information is used for requesting to acquire the edge cloud information of the area where the vehicle is currently located.
Specifically, at least one edge cloud is installed in each area, and when a vehicle enters one of the areas, the terminal equipment sends an acquisition request of the edge cloud information carrying the current position information of the vehicle to the center cloud. For example, referring to fig. 3, a city may be divided into X areas, and when a vehicle runs in area 1 of the city, an acquisition request of edge cloud information is sent to a central cloud to acquire information of the edge cloud of area 1. When the vehicle runs in the area X, an acquisition request of the edge cloud information is sent to the center cloud 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 performance of the edge clouds may be the same or different, so that implementation of the embodiment of the present application is not affected. It should be noted that there may be one or more central clouds. If a plurality of center clouds exist, the terminal equipment can send an acquisition request of the 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 equipment.
The edge cloud information is used for determining the number n of edge cloud access requests to be sent by the terminal equipment, wherein n is a positive integer. The edge cloud information includes: the method comprises the steps of determining the number of edge clouds of an area where a vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located successfully receives an edge cloud access request, and the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access request.
Specifically, after receiving the request for acquiring the edge cloud information, the central cloud can determine the edge cloud information of the area where the vehicle is currently located, namely 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, so that 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 an acquisition request of the edge cloud information to the center cloud, and after the center cloud receives the request, 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 receiving the request, the center cloud executes step S202 to send the edge cloud information of the area X to the terminal device.
The center cloud determines a plurality of corresponding edge cloud information according to the current position information of the vehicle carried in the edge cloud information acquisition request. For example, the center cloud stores the information of the edge cloud of each area in the database in advance, and when the acquisition request of the edge cloud information is received, the center cloud searches in the database by utilizing the current position information of the vehicle to determine the corresponding edge cloud information. The difference of the modes of determining the corresponding edge cloud information by the center cloud does not affect the implementation of the embodiment of the application.
Alternatively, the request for acquiring the edge cloud information may be a request for acquiring all information of the edge cloud of the area where the vehicle is located, or may be a specific request for acquiring the edge cloud information. For example, the acquisition requests of the edge cloud information may be classified into an acquisition request of the number of edge clouds of the area where the vehicle is currently located, an acquisition request of a probability that each edge cloud of the area where the vehicle is currently located successfully receives the edge cloud access request, and an acquisition request of a probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access request. The terminal device obtains the parameter values corresponding to the acquisition requests by sending the acquisition requests of different parameter values.
The number of the 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 can be sent to the terminal device separately or packaged, and the mode of sending the edge cloud information is not affected by the implementation of the embodiment of the application.
The probability that each edge cloud of the current area of the vehicle receives the edge cloud access request successfully refers to the probability that the edge cloud of the current area receives the edge cloud access request sent by the terminal equipment, namely the probability that the edge cloud access request successfully reaches the edge cloud. The edge cloud access request is used to request access to the edge cloud, i.e., to request communication with the edge cloud. When the terminal device sends an edge cloud access request to the edge cloud of the current area, the edge cloud access request may be successfully received by any one edge cloud of the area. Wherein the edge cloud access request can only be received by 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 accounts for the randomness of the edge cloud being successfully received. The probability that each edge cloud of the area where the vehicle is currently located 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 receives the edge cloud access request can be obtained through experiments in advance, and the probability that each edge cloud of the current area of the vehicle receives the edge cloud access request, which is obtained through final experiments, is stored in the center cloud.
The probability that each edge cloud of the area where the vehicle is currently located 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 equipment. After a certain edge cloud successfully responds, the terminal equipment can successfully acquire the identification information of the edge cloud, and further can establish communication with the edge cloud by utilizing the identification information of the edge cloud. Wherein an edge cloud access request can only be successfully responded to once by the edge cloud that received the request. The probability of each edge cloud of the current area of the vehicle responding to the edge cloud access request successfully is related to factors such as the performance of the edge cloud, and the like, and the probability can be obtained by testing the edge cloud in advance.
The probability that each edge cloud of the area where the vehicle is currently located successfully receives the edge cloud access request and the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access request illustrate that the edge cloud successfully receives and responds to the edge cloud access request is random. That is, one edge cloud access request may be successfully received and responded by any one edge cloud of the area, or may not be successfully received or successfully responded by any one edge cloud, and multiple edge cloud access requests may not be able to be successfully received and responded, and there is a possibility that one edge cloud is successful and responds to multiple edge cloud access requests.
S203, the terminal equipment determines the number n of the edge cloud access requests to be sent by the terminal equipment according to the edge cloud information.
Wherein n is a positive integer. The terminal equipment determines the number n of the edge cloud access requests to be sent by the terminal equipment according to the number of the edge clouds of the area where the vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located successfully receives the edge cloud access requests and the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access requests, wherein the number n is sent by the terminal equipment.
In the prior art, the center cloud only sends information of the number of edge clouds of the area where the terminal equipment vehicle is currently located, and does not send the probability that each edge cloud of the area where the vehicle is currently located successfully receives the edge cloud access request and the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access request, so that when the terminal equipment in the prior art determines the number of the edge cloud access requests to be sent by the terminal equipment, only the information of the number of the edge clouds is considered, and the randomness that the edge clouds receive the edge cloud access request and respond to the edge cloud access request is not considered.
Specifically, in the prior art, the number of edge clouds sent by the center cloud to the current area where the terminal equipment vehicle is located is L, and the terminal equipment sends L edge cloud access requests to the edge clouds of the current area. However, the edge cloud access requests are not necessarily all received and responded, and the L edge cloud access requests are not necessarily received and responded by the L edge clouds, and a request that multiple edge cloud access requests are received by the same edge cloud may occur, so that the L edge cloud requests are sent, and it is not guaranteed that the L edge clouds of the current area can be successfully received and responded.
In the embodiment of the application, the number n of the edge cloud access requests to be sent by the terminal equipment is obtained according to the number of the edge clouds of the area where the vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located successfully receives the edge cloud access requests, and the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access requests, so that the determined n considers the randomness of the edge cloud receiving the edge cloud access requests and responding to the edge cloud access requests, and can ensure that the edge clouds of the area where the vehicle is located can successfully respond to the edge cloud access requests.
Optionally, referring to fig. 4, in a specific embodiment of the present application, an implementation manner of the terminal device to perform step S203 includes:
s401, calculating to obtain a threshold N of the number of edge cloud access requests to be transmitted by the terminal equipment at least according to the number of times that a preset piece of edge cloud needs to respond successfully and edge cloud information transmitted by the center cloud.
The preset number u of times that an edge cloud needs to respond successfully refers to the number of times that an edge cloud needs to respond successfully to an edge cloud access request, and represents that any edge cloud in the current area can successfully receive and respond to the u edge cloud access requests. For example, the current region has three edge clouds, edge cloud a, edge cloud B, and edge cloud C, and when u is set to 2, it is indicated that edge cloud a is expected to respond 2 times successfully, edge cloud B responds 2 times successfully, and edge cloud C responds 2 times successfully.
Although the terminal equipment can realize communication with the edge cloud only by successfully responding once, the more times the edge cloud can successfully respond to the edge cloud access request, the higher the reliability of the edge cloud is, namely the higher the reliability of the service information successfully acquired by the terminal equipment from the edge cloud is. The threshold N of the number of edge cloud access requests to be sent by the terminal device calculated in step S401 at least can meet that any edge cloud in the area can successfully respond u times.
Optionally, in an 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 equipment for acquiring the edge cloud service in the current area. The edge cloud reliability is obtained 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. The more the number of the edge clouds of the current area of the vehicle is, the greater the probability that each edge cloud of the current area of the vehicle successfully receives the edge cloud access request is, and the greater the probability that each edge cloud of the current area of the vehicle successfully responds to the edge cloud access request is, the higher the probability that the terminal equipment successfully obtains the service of the edge cloud of the current area is, and further the u value can be set to be smaller. The fewer the number of the edge clouds in the current area of the vehicle, the smaller the probability that each edge cloud in the current area of the vehicle successfully receives the edge cloud access request, and the smaller the probability that each edge cloud in the current area of the vehicle successfully responds to the edge cloud access request, the lower the probability that the terminal equipment successfully obtains the service of the edge cloud in the current area is.
Optionally, the reliability of the edge cloud in the area where the vehicle is currently located may be a product of the number of edge clouds in the area where the vehicle is currently located, a probability that each edge cloud in the area where the vehicle is currently located successfully receives the edge cloud access request, and a probability that each edge cloud in 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 respond successfully can be set for the value of the reliability of the edge cloud of the current area of the vehicle. The smaller the value of the reliability of the edge cloud of the current area of the vehicle is, the larger the value of the number u of times that the edge cloud of the set block 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 central cloud, the number u of times that an edge cloud needs to respond successfully is set according to the number of edge clouds of the area where the vehicle is currently located in the edge cloud information, the probability that each edge cloud of the area where the vehicle is currently located successfully receives the edge cloud access request, and the probability that each edge cloud of 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 u value by itself, including but not limited to those mentioned in the embodiments of the present application. For example, the corresponding relation between the reliability of the edge cloud and the u value can be preset, the reliability of the edge cloud is calculated after the edge cloud information is acquired, and the u value corresponding to the reliability is matched and set. For another example, the terminal device informs the user on the vehicle of the reliability of the current edge cloud, the user sets the u value according to the reliability of the edge cloud, and the terminal device responds to the operation of the user to finish 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 central cloud may obtain the edge cloud information of the position information of the vehicle according to the obtaining request of the edge cloud information sent by the terminal device, so that the number threshold N of the edge cloud access requests required to be sent by the terminal device can be obtained by calculating 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 requests, and the probability that each edge cloud in the area where the vehicle is currently located successfully responds to the edge cloud access requests, and then the number threshold N is sent to the terminal device, and the terminal device may execute step S402 according to the number threshold N.
Optionally, in a specific embodiment of the present application, the terminal device performs an implementation manner of step S401, including:
substituting the number of times that one edge cloud needs to respond successfully, the number of edge clouds of the area where the vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located receives the edge cloud access request successfully, and the probability that each edge cloud of the area where the vehicle is currently located responds to the edge cloud access request into a first formula, and calculating to obtain a threshold N of the number of the edge cloud access requests which are at least needed to be sent by the terminal equipment.
Wherein, the first formula is:u is the number of times an edge cloud needs to respond successfully; b is the number of edge clouds of the current area of the vehicle, and p is each area of the current area of the vehicleThe probability that one edge cloud successfully receives the edge cloud access request, and q is the probability that each edge cloud of the current area of the vehicle successfully responds to the edge cloud access request; u and b are positive integers.
Specifically, the process of obtaining the first formula is: 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 one edge cloud and the edge cloud can successfully respond to the request, further solving the probability that the edge cloud can successfully respond u times, then solving how many edge cloud access requests should be sent by vehicles for enabling the edge cloud to successfully respond u times, finally solving how many edge cloud access requests should be sent by vehicles for enabling all the edge cloud to successfully respond u times, and pushing the probability to obtain a first formula.
S402, determining the number N of the edge cloud access requests to be sent by the terminal equipment according to the threshold N of the number of the edge cloud access requests to be sent by the terminal equipment.
Wherein N is greater than or equal to N. According to N calculated in step S401, it is explained that in order to enable any edge cloud of the area where the current vehicle is located to successfully respond u times, the terminal device needs to send at least N edge cloud access requests, so that 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 numerous, for example, N may be equal to n+2, and N numbers may be set to be greater than N by 2, so as to further ensure that any edge cloud of 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 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 of performing step S402 includes, but is not limited to, what is proposed in the embodiment of the present application.
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 for requesting communication with an edge cloud. The edge cloud access request carries identification information of the terminal equipment. The number n of the edge cloud requests sent by the terminal equipment is obtained according to the number of the edge clouds of the area where the vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located successfully receives the edge cloud access requests and the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access requests, and the randomness of the successful receipt and response of the edge cloud access requests is considered, so that the sent n edge cloud access requests can ensure that the edge clouds of the current area can successfully respond to the edge cloud access requests.
Optionally, referring to fig. 6, in an embodiment of the present application, after performing step S204, the terminal device further includes:
s601, receiving response information sent by edge clouds of an area where the vehicle is located.
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 (Internet Protocol, IP) address, etc.
Specifically, referring to fig. 5, after the terminal device sends n edge cloud access requests to the edge cloud of the current area, the edge cloud of the current area receives and responds to the edge cloud access request, and sends the identification information of the edge cloud to the terminal device by using the identification information of the terminal device carried in the edge cloud access request. And each time the edge cloud successfully responds to the edge cloud request, sending response information of the edge cloud to the terminal equipment once. Therefore, in step S601, the response information received by the terminal device has a plurality of pieces, and in step S601, identification information of a plurality of different edge clouds of the current area can be obtained.
If the terminal device sets the number u of successful response times of one edge cloud and the number b of the edge clouds of the current area of the vehicle, the terminal device receives at least bxu pieces of response information theoretically, and the response information is sent by the b pieces of edge clouds of the current area.
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 the area where the current vehicle is located. The road condition information may include road surface smoothness, visibility, traffic conditions, etc. After obtaining the road condition information, the terminal equipment can display the road condition information to a user on the vehicle, and the user can drive the vehicle according to the road condition information. Since the response information acquired in step S601 is 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 executing step S602, the road condition service request may be sent to each edge cloud that obtains 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 may be sent to the selected edge cloud.
Optionally, in an embodiment of the present application, after performing step S601, the method further includes:
and selecting the edge cloud with the largest successful response times in the area of the vehicle according to the received response information sent by the edge cloud of the area of the vehicle.
The more the number of successful response times of the edge cloud is, the higher the reliability of the edge cloud is, and the greater the possibility that the terminal equipment successfully obtains road condition service information from the edge cloud is. Therefore, after step S601 is performed, the response times of the edge cloud in the area can be counted, and the edge cloud with the largest successful response times is used as the edge cloud for communication with the edge cloud.
When the terminal device executes step S602, the method includes: and sending a road condition service request to the edge cloud with the largest successful response times in the area of the vehicle by using the identification information of the edge cloud with the largest successful response times in the area of the vehicle.
S603, receiving road condition service information sent by edge clouds of an area where the vehicle is located.
The road condition service information received by the terminal equipment can be sent by one of the edge clouds of the area or can be sent by a plurality of the edge clouds of the area. After receiving the road condition service information, the terminal equipment 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 obtained road condition service information.
Optionally, after executing step S601, 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 of the area where the vehicle is located, and executing step S603, the terminal device receives the road condition 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 by the embodiment of the application can be applied to the automatic driving technology in addition to the obtained road condition service information in the driving process of the user. The automatic driving technology generally comprises high-precision map, environment perception, behavior decision, path planning, motion control and other technologies, and has wide application prospect. The automatic driving technology relates to the acquiescent cooperation among people, 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 to realize the cooperative cooperation among the vehicles and the roads.
In the vehicle communication method provided by the embodiment of the application, the edge cloud information which is sent by the received center cloud and corresponds to the position information of the vehicle comprises the following steps: the number n of the edge cloud access requests to be sent by the terminal equipment is determined according to the edge cloud information, the randomness of the edge cloud receiving and responding the edge cloud access requests is considered, the edge cloud of the area where the vehicle is located can be ensured to successfully respond the edge cloud access requests, and the reliability of the terminal equipment for acquiring the edge cloud service is further improved.
Referring to fig. 7, based on the vehicle communication method proposed in the above embodiment of the present application, the embodiment of the present application correspondingly discloses a terminal device 700, including: 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 the edge cloud information to the central cloud. The request for acquiring the edge cloud information carries current position information of the vehicle.
The first receiving unit 702 is configured to receive edge cloud information corresponding to position information of a vehicle, which is sent by a center cloud. Wherein, edge cloud information includes: the method comprises the steps of determining the number of edge clouds of an area where a vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located successfully receives an edge cloud access request, and the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access request;
the determining unit 703 is configured to calculate, according to a preset number of times that an edge cloud needs to respond successfully and edge cloud information sent by a center cloud, a number threshold N of edge cloud access requests that the terminal device needs to send at least; n is a positive integer; and determining the number N of the edge cloud access requests to be sent by the terminal equipment according to the threshold N of the number of the edge cloud access requests to be sent by the terminal equipment. Wherein N is greater than or equal to N.
Optionally, in an embodiment of the present application, the number of times that an 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 edge cloud reliability 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, and the edge cloud reliability is obtained according to the number of edge clouds of the current area of the vehicle, the probability that each edge cloud of the current area of the vehicle successfully receives the edge cloud access request, and the probability that each edge cloud of the current area of the vehicle successfully responds to the edge cloud access request.
Optionally, in an embodiment of the present application, the determining unit 703 calculates, according to the number of times that a preset piece of edge cloud needs to respond successfully and edge cloud information sent by the central cloud, a threshold N of the number of edge cloud access requests that the terminal device needs to send, where the threshold N is used for:
substituting the number of times that one edge cloud needs to respond successfully, 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 receives the edge cloud access request successfully, and the probability that each edge cloud in the area where the vehicle is currently located responds to the edge cloud access request into a first formula, and calculating to obtain a threshold N of the number of the edge cloud access requests which are at least needed to be sent by the terminal equipment.
Wherein, the first formula is:u is the number of times an edge cloud needs to respond successfully; 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 positive integers.
And the second sending unit 704 is configured to send n edge cloud access requests to an edge cloud in 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 the response information sent by the edge cloud of the area where the vehicle is located. The response information carries identification information of the edge cloud.
And the third sending unit is used for sending a road condition service request to the edge cloud of the area where the vehicle is located by utilizing the identification information of the edge cloud.
And the third receiving unit is used for receiving 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:
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 of the area where the vehicle is located.
Wherein the third transmitting unit includes:
and the third sending subunit is used for sending the road condition service request to the edge cloud with the largest successful response times in the area where the vehicle is located by utilizing the identification information of the edge cloud with the largest 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 successful response times in the area where the vehicle is located.
The specific principle and execution process of the units and the sub-units in the information terminal device 700 disclosed in the above embodiment of the present application are the same as those of the vehicle communication method disclosed in the above embodiment of the present application, and may refer to the corresponding parts in the vehicle communication method disclosed in the above embodiment of the present application, and will not be described in detail herein.
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 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, so that the number n of the edge cloud access requests to be sent by the terminal equipment determined by the determining unit 703 according to the edge cloud information considers the randomness of the edge cloud receiving and responding to the edge cloud access request, the edge clouds in the area where the vehicle is currently located can be guaranteed to successfully respond to the edge cloud access request, and the reliability of the terminal equipment for acquiring the edge cloud service is further improved.
Referring to fig. 8, based on the vehicle communication method provided by the above embodiment of the present application, the embodiment of the present application correspondingly discloses a central cloud 800, including: a receiving unit 801 and a transmitting unit 802.
A receiving unit 801, configured to receive an acquisition request of edge cloud information sent by a terminal device. The request for acquiring the edge cloud information carries current position information of the vehicle.
A transmitting unit 802, configured to transmit edge cloud information corresponding to 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 to be sent by the terminal equipment, wherein n is a positive integer. The edge cloud information includes: the method comprises the steps of determining the number of edge clouds of an area where a vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located successfully receives an edge cloud access request, and the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access request.
The specific principle and execution process of the units and the sub-units in the central cloud 800 of the information disclosed in the above embodiment of the present application are the same as those of the vehicle communication method disclosed in the above embodiment of the present application, and may refer to the corresponding parts in the vehicle communication method disclosed in the above embodiment of the present application, and will not be described in detail here.
In the central cloud 800 according to 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 n of the edge cloud access requests to be sent by the terminal equipment is determined according to the edge cloud information, the randomness of the edge cloud receiving and responding the edge cloud access requests is considered, the edge cloud of the area where the vehicle is located can be ensured to successfully respond the edge cloud access requests, and the reliability of the terminal equipment for acquiring the edge cloud service is further improved.
The embodiment of the application provides a computer readable medium on which a computer program is stored, wherein the program, when executed by a processor, implements the vehicle communication method provided by the above method embodiments.
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 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.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. 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 storage media for a computer 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, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
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 above description is only illustrative of the preferred embodiments of the present application and the technical principles applied, and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. The scope of the application is not limited to the specific combination of the above technical features, but also covers other technical features formed by any combination of the above technical features or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.
It is further noted that relational terms such as first and second, and the like are 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. Moreover, 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Claims (10)

1. A vehicle communication method, characterized in that the method is applied to a terminal device, the method comprising:
sending an acquisition request of the edge cloud information to the center cloud; the request for acquiring the edge cloud information carries 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 of the area where the vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located successfully receives an edge cloud access request, and the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access request;
according to the number of times that a preset piece of edge cloud needs to respond successfully and the edge cloud information sent by the center cloud, calculating to obtain a threshold N of the number of edge cloud access requests which are at least needed to be sent by the terminal equipment; wherein N is a positive integer;
determining the number N of the edge cloud access requests to be sent by the terminal equipment according to the threshold N of the number of the edge cloud access requests to be sent by the terminal equipment; wherein N is greater than or equal to N;
And sending n edge cloud access requests to the edge cloud of the area where the vehicle is located.
2. The method according to claim 1, wherein 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 edge cloud reliability is obtained 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 an 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.
3. The method of claim 1, wherein the calculating, according to the number of times that the preset edge cloud needs to respond successfully and the edge cloud information sent by the center cloud, the number threshold N of the edge cloud access requests that the terminal device needs to send at least includes:
substituting the number of times that the edge cloud needs to successfully respond, the number of the edge clouds of the area where the vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located successfully receives an edge cloud access request, and the probability that each edge cloud of the area where the vehicle is currently located 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 which are at least required to be sent by terminal equipment;
Wherein, the first formula is:u is the number of times the edge cloud needs to respond successfully; b is the number of edge clouds of the area where the vehicle is currently located, p is the probability that each edge cloud of the area where the vehicle is currently located successfully receives an edge cloud access request, and q is the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access request; u and b are positive integers.
4. The method of claim 1, wherein after the sending n edge cloud access requests to the edge cloud of the area where the vehicle is located, further comprises:
receiving response information sent by the edge cloud of the area where the vehicle is located; the response information carries identification information of the edge cloud;
transmitting a road condition service request to the edge cloud of the area where the vehicle is located by utilizing 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, further comprising, after receiving the response message sent by the edge cloud of the area where the vehicle is located:
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 of the area where the vehicle is located;
The sending, by using the identification information of the edge cloud, a road condition service request to the edge cloud of the area where the vehicle is located includes:
transmitting a road condition service request to the edge cloud with the largest successful response times in the area of the vehicle by using the identification information of the edge cloud with the largest successful response times in the area of the vehicle;
the receiving the road condition service information sent by the edge cloud of the area where the vehicle is located comprises the following steps:
and receiving 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, wherein the method is applied to a central cloud, the method comprising:
receiving an acquisition request of edge cloud information sent by terminal equipment; the request for acquiring the edge cloud information carries current position information of the vehicle;
transmitting edge cloud information corresponding to the position information of the vehicle to the terminal equipment; the edge cloud information is used for determining the number n of edge cloud access requests to be sent by the terminal equipment; n is a positive integer; the edge cloud information includes: the method comprises the steps of enabling the number of edge clouds of an area where a vehicle is currently located to be, enabling each edge cloud of the area where the vehicle is currently located to successfully receive an edge cloud access request, and enabling each edge cloud of the area where the vehicle is currently located to successfully respond to the edge cloud access request.
7. A terminal device, comprising:
the first sending unit is used for sending an acquisition request of the edge cloud information to the center cloud; the request for acquiring the edge cloud information carries current position information of the vehicle;
the first receiving unit is used for 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 of the area where the vehicle is currently located, the probability that each edge cloud of the area where the vehicle is currently located successfully receives an edge cloud access request, and the probability that each edge cloud of the area where the vehicle is currently located successfully responds to the edge cloud access request;
the determining unit is used for calculating and obtaining a number threshold N of the edge cloud access requests which are at least required to be sent by the terminal equipment according to the number of times of successful response of a preset piece of edge cloud 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 to be sent by the terminal equipment according to the threshold N of the number of the edge cloud access requests 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 n edge cloud access requests to the edge cloud of the area where the vehicle is located.
8. 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 request for acquiring the edge cloud information carries current position information of the vehicle;
a transmitting unit configured to transmit edge cloud information corresponding to 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 to be sent by the terminal equipment; n is a positive integer; the edge cloud information includes: the method comprises the steps of enabling the number of edge clouds of an area where a vehicle is currently located to be, enabling each edge cloud of the area where the vehicle is currently located to successfully receive an edge cloud access request, and enabling each edge cloud of the area where the vehicle is currently located to successfully respond to the edge cloud access request.
9. A vehicle-road cooperative system, characterized by comprising:
terminal device for performing the method of any of claims 1 to 5;
a central cloud associated with the vehicle for performing the method of claim 6;
An edge cloud associated with the vehicle.
10. A computer readable medium, characterized in that a computer program is stored thereon, wherein the program, when executed by a processor, implements the method of any of claims 1 to 5 or the method of claim 6.
CN202010200421.4A 2020-03-20 2020-03-20 Vehicle communication method, vehicle-road cooperation system, related device, and readable medium Active CN111405467B (en)

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