Congestion control device and method for inter-vehicle communication
First Claim
1. A communication congestion control device, comprising:
- an external sensor integration processor configured to receive a signal comprising at least one of a sensing signal of a vehicle and a GPS signal and generating driving information of the vehicle based on the signal;
a wireless resource management processor configured to received statistic information of a communication condition with a surrounding vehicle and driving information of the surrounding vehicle from a communication processor of the vehicle;
a time frame design processor configured to set a time frame based on the communication condition and to set a period of the time frame based on a average driving speed of the vehicle; and
a network congestion control processor configured to receive the driving information of the vehicle and the driving information of the surrounding vehicle, to determine a setting change time within the time frame based on the statistic information, to generate transmission data based on the time frame, and to set data transmission rate based on a length of a time slot in the time frame,wherein the statistic information comprises an error rate, andwherein the network congestion control processor decreases a level of transmission power when a data transmission rate is over a maximum data transmission rate available during inter-vehicle communication.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to a vehicle communication system and method used when transmitting and receiving driving information of a vehicle to and from surrounding vehicles. According to the present invention, a host vehicle may transmit and receive driving information to and from its surrounding vehicles to find out information about a position, a speed, a driving direction, etc., thereby decreasing traffic accident risk. However, transmission and reception of the driving information may not be smoothly performed depending on surrounding communication conditions. The present invention provides a communication congestion control device and method for smoothly performing data transmission and reception between vehicles depending on surrounding conditions, by setting a time frame variably depending on surrounding communication conditions and transmitting data on the basis of the changed time frame.
-
Citations
17 Claims
-
1. A communication congestion control device, comprising:
-
an external sensor integration processor configured to receive a signal comprising at least one of a sensing signal of a vehicle and a GPS signal and generating driving information of the vehicle based on the signal; a wireless resource management processor configured to received statistic information of a communication condition with a surrounding vehicle and driving information of the surrounding vehicle from a communication processor of the vehicle; a time frame design processor configured to set a time frame based on the communication condition and to set a period of the time frame based on a average driving speed of the vehicle; and a network congestion control processor configured to receive the driving information of the vehicle and the driving information of the surrounding vehicle, to determine a setting change time within the time frame based on the statistic information, to generate transmission data based on the time frame, and to set data transmission rate based on a length of a time slot in the time frame, wherein the statistic information comprises an error rate, and wherein the network congestion control processor decreases a level of transmission power when a data transmission rate is over a maximum data transmission rate available during inter-vehicle communication. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A communication congestion control method, comprising:
-
receiving driving information about surrounding vehicles and statistic information about communication conditions with the surrounding vehicles; setting or changing a time frame to be used in data transmission and reception based on the driving information about the surrounding vehicles and the statistic information; setting a data transmission rate, based on a length of a time slot in the time frame, and a message generation rate used when generating data to be transmitted to the surrounding vehicles; setting a level of transmission power to be reduced when the data transmission rate is over a maximum data transmission rate available during inter-vehicle communication; and generating data on the driving information about the host vehicle based on the data transmission rate and the message generation rate and transmitting the data to the surrounding vehicles. - View Dependent Claims (16, 17)
-
Specification