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69 results about "Vehicle to infrastructure" patented technology

Vehicle to infrastructure (V2I or v2i) Share this item with your network: Vehicle-to-infrastructure (V2I or v2i) is a communication model that allows vehicles to share information with the components that support a country's highway system.

Time division multiple access-based resource scheduling scheme for Internet of vehicles

The invention discloses a time division multiple access technology-based resource scheduling method for the Internet of vehicles. The method mainly comprises the following steps of implementing the resource scheduling of vehicle-to-infrastructure and vehicle-to-vehicle communication links under the control and strategies of a roadside center unit; calculating a scheduling weight factor of each communication link according to information such as channel states, positions and movement speed cyclically fed back by vehicles, and preferentially scheduling timeslot resources to communication links (groups) with higher scheduling weight factors for data transmission by using the roadside center unit, wherein a plurality of vehicle-to-vehicle communication links can be combined into a communication link group if a distance between every two center vehicles serving as data transmitting terminals is longer than a preset interference interval, and a scheduling weight factor of each communication link group is the summation of the scheduling weight factors of all the communication links in the group; the same timeslot resource can be shared by each communication link in the same communication link group for data transmission; the sharing of the timeslot resources between different vehicle-to-infrastructure communication links and between the vehicle-to-infrastructure communication links and the vehicle-to-vehicle communication links for data transmission is not allowed. According to the resource scheduling method, the network throughput and the spectral efficiency of the Internet of vehicles can be effectively improved, and high network throughput performance can still be maintained particularly under the condition of high network load.
Owner:PEKING UNIV

Intersection centralized scheduling method for multiple-unmanned-vehicle formation

The invention discloses an intersection centralized scheduling method for a multiple-unmanned-vehicle formation. For aiming at a cooperative intelligent traffic system in which unmanned vehicles are used as a mobile service carrier, the method is characterized in that centralized scheduling on the multiple-unmanned-vehicle formation is performed based on vehicle-to-infrastructure communication (V2I); and the disposition in a scheduling computer of each intersection is performed. According to the method, before reaching the intersection by each unmanned vehicle, reserving information for passing the intersection must be performed to the scheduling computer through an on-vehicle wireless network. The scheduling computer utilizes a principle that a high-weight lane has higher priority, thereby performing multiple-vehicle authorization scheduling on the unmanned vehicles in each lane. According to the intersection centralized scheduling method, passing scheduling efficiency of the unmanned vehicle is further improved in a formation scheduling manner, and particularly passing efficiency of the unmanned vehicle with high priority is improved as possible, thereby effectively supporting design of a service-oriented intelligent traffic system, and similar multiple-intelligent-mobile-robot systems for intelligent warehousing and dispensing, etc.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Traffic management method based on vehicle-to-infrastructure integration technology

A traffic management method based on vehicle-to-infrastructure integration technology comprises the following steps of S1, acquiring motion data of all vehicles which are connected with a road-side unit in a vehicle-to-infrastructure technology (V2I) communication mode; S2, detecting whether an abnormal event occurs, and determining the type of the abnormal event; S3, when the abnormal event is a traffic accident, executing a step S4; S4, extracting the position and the speed of all vehicles in a traffic accident range in a preset time period; S5, calculating an average vehicle speed V in the traffic accident range; S6, comparing for determining whether the average vehicle speed V is smaller than a preset least vehicle speed V_min, if yes, performing a step S18, and otherwise, performing a step S7; ....; and S12, calculating the number sumi of queuing vehicles of each lane behind a first parking line and sequencing the numbers sumi from highest to lowest, and dynamically distributing passing time length of each lane according to the sumi. The traffic management method has beneficial effects of high traffic management efficiency, no manpower resource consumption and low danger coefficient. The traffic management method has functions of dynamically distributing lanes for the vehicles, improving traffic operation efficiency, performing ordered control on the vehicles at a crossing, and effectively reducing traffic accident rate at the crossing.
Owner:CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST

Smart In-Vehicle Decision Support Systems and Methods with V2I Communications for Driving through Signalized Intersections

InactiveUS20190206247A1Safe and efficientImproves intersectionAutonomous decision making processArrangements for variable traffic instructionsIntelligent decision support systemDriver/operator
Smart in-vehicle decision support system has been developed to address current challenges and offers a new approach to make right stop / go decisions for vehicles to drive through a signalized intersection. The methods and systems described herein exploit a novel conceptualization of the decision support problem as an integration process, where a decision support model takes advantages of vehicle-to-infrastructure communications and fuses the inputs from vehicles and intersection, which comprise key information of vehicle motion, vehicle-driver characteristics, signal phase and timing, intersection geometry and topology, and the definitions of red-light running, to explore a more complete variable space of physical and behavioral information and provide safer and more efficient decision supports to vehicles driving through a signalized intersection than the previous methods and systems. The novel formulation of the decision support model as a probabilistic sequential decision making process incorporates a set of decision rules that are responsible for different situations into the present invention, which enables each decision rule to quickly make a right decision and better improves both traffic safety and intersection throughput than the other existing formulations.
Owner:XIE XIAOFENG +1

Expressway dangerous road section and construction region early-warning control system and method

The invention provides an expressway dangerous road section and construction region early-warning control system and an expressway dangerous road section and construction region early-warning controlmethod, which belong to the technical field of intelligent vehicles. The an expressway dangerous road section and construction region early-warning control system comprises a data collection module, anetwork communication module, a data calculation processing module, a scene processing module, and an early-warning publishing and feedback module. The an expressway dangerous road section and construction region early-warning control method comprises the steps of: a data acquisition step, which is implemented by loading data by means of a local roadside intelligent control station; a network communication step used for V2I (Vehicle to Infrastructure) communication of the Internet of Vehicles; a data calculating and processing step used for calculating and processing received data and transmitting a data processing result to the scene processing module; a scene processing step, which is implemented by judging a specific type of a road section, and judging a distance reminder between a vehicle and the dangerous road section as well as a construction region; and an early-warning step, which is implemented by performing auxiliary operation prompt or early warning according to the type ofthe road section and the distance between the vehicle and the dangerous road section as well as the construction region. The expressway dangerous road section and construction region early-warning control method plays a positive role in reducing the accident rate of dangerous road sections and construction regions of an expressway, and improves the driving safety.
Owner:EAST CHINA JIAOTONG UNIVERSITY

Vehicle formation method and system based on V2I (vehicle-to-infrastructure) cooperative technology

An embodiment of the invention discloses a vehicle formation method and system based on a V2I (vehicle-to-infrastructure) cooperative technology and relates to the technical field of V2I cooperation.The method comprises the steps as follows: a vehicle A periodically broadcasts pre-formation information, wherein the vehicle A is any vehicle with a V2V (vehicle-to-vehicle) cooperation function; a vehicle B communicates with the vehicle A through a V2V device after receiving the pre-formation information of the vehicle A to construct a queue, and a pilot vehicle and a first formed vehicle are determined according to a formation rule; the first formed vehicle sends formation completion information to the pilot vehicle; the pilot vehicle periodically broadcasts formation information; any vehicle C joins the queue after receiving the formation information to become a second formed vehicle to the Nth formed vehicle; vehicles are forbidden to join the queue until the length of the queue reaches pre-formation length of the pilot vehicle or the formed member number reaches a preset member number of the pilot vehicle. The vehicle formation method and system can solve the problem of low efficiency of vehicle formation running methods in the prior art.
Owner:SHENZHEN CHENGGU TECH CO LTD
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