Method and apparatus for reducing load in can communication

A method for reducing a communication load in a reception node connected to a controller area network (CAN) communication network, the method comprising steps of:

• receiving a first CAN data frame including first data at a first reception time;
• receiving a second CAN data frame at a second reception time;
• extracting a data length code (DLC) field value of the second CAN data frame;
• and
• generating second data corresponding to the second CAN data frame on the basis of the extracted DLC value.

An apparatus for reducing communication load in a transmission node connected to a controller area network (CAN) communication network, the apparatus comprising:

• a controller for (i) generating a first CAN data frame including first data and transmitting the first CAN data frame to the CAN communication network at a first transmission time;
• (ii) comparing second data with the first data at a second transmission time;
• and
• (iii) transmitting, to the CAN communication network, a second CAN data frame in which a data length code (DLC) field value is set to a predetermined value indicating that the data has not changed, when the second data is identical to the first data.

An apparatus for reducing a communication load in a reception node connected to a controller area network (CAN) communication network, the apparatus comprising:

• a controller for (i) receiving a first CAN data frame including first data at a first reception time;
• (ii) receiving a second CAN data frame at a second reception time;
• (iii) extracting a data length code (DLC) field value of the second CAN data frame;
• and
• (iv) generating second data corresponding to the second CAN data frame on the basis of the extracted DLC value.