Transitory tangible computer-readable storage medium
AssigneeDenso Corporation
InventorsHiroko Kato, Tadao Suzuki
Life of this patent
Estimating the term…
Abstract
A method performed by a communication apparatus according to an aspect of the present disclosure includes calculating (400, 530) a generation interval and transmit power of a basic safety message used for Vehicle-to-Vehicle, V2V, safety communication, based on a channel busy ratio which is a ratio of time during which a channel is busy and on vehicle density within a predetermined range, and transmitting (500), based on the generation interval and the transmit power, the basic safety message over a PC5 reference point specified in a technical specification of the 3rd Generation Partnership Project, 3GPP.
Claims12
A method performed by a communication apparatus of a vehicle, comprising:
- calculating a k-th smoothed vehicle density from a k-th vehicle density within a predetermined range, a weight coefficient for smoothing, and a k−1-th smoothed vehicle density;
- calculating a generation interval of a basic safety message used for Vehicle-to-Vehicle (V2V) safety communication, based on the k-th smoothed vehicle density;
- and
- transmitting, based on the generation interval, a channel busy ratio, a priority of a packet and an occupancy limit of channel resources, the basic safety message to another communication apparatus of another vehicle over a PC5 reference point specified in a technical specification of the 3rd Generation Partnership Project, 3GPP (3GPP);
- wherein the generation interval is equal to an integral multiple of a subframe used for communication over the PC5 reference point.
A communication apparatus of a vehicle comprising:
- a memory storing a program;
- and
- one or more processors configured to execute the program to:
- calculate a k-th smoothed vehicle density from a k-th vehicle density within a predetermined range, a weight coefficient for smoothing, and k−1-th smoothed vehicle density;
- calculate a generation interval of a basic safety message used for Vehicle-to-Vehicle (V2V) safety communication, based on the k-th smoothed vehicle density;
- and
- transmit, based on the generation interval, a channel busy ratio, a priority of a packet and an occupancy limit of channel resources, the basic safety message to another communication apparatus of another vehicle over a PC5 reference point specified in a technical specification of the 3rd Generation Partnership Project (3GPP);
- wherein the generation interval is equal to an integral multiple of a subframe used for communication over the PC5 reference point.
A non-transitory tangible computer-readable storage medium having stored therein a program for causing a computer to execute operations comprising:
- calculating a k-th smoothed vehicle density from a k-th vehicle density within a predetermined range, a weight coefficient for smoothing, and a k−1-th smoothed vehicle density;
- calculating a generation interval of a basic safety message used for Vehicle-to-Vehicle (V2V) safety communication, based on the k-th smoothed vehicle density;
- and
- transmitting, based on the generation interval, a channel busy ratio, a priority of a packet and an occupancy limit of channel resources, the basic safety message to another communication apparatus of another vehicle over a PC5 reference point specified in a technical specification of the 3rd Generation Partnership Project (3GPP);
- wherein the generation interval is equal to an integral multiple of a subframe used for communication over the PC5 reference point.
Dependencies are inferred from the claim text.