Driving negotiation method and apparatus

1. A driving negotiation apparatus comprising:

a transceiver configured to include a communication subsystem that supports vehicle to everything (V2X) communication; and

at least one processor connected to the transceiver,

wherein the at least one processor receives a cooperative request message (CooperativeRequestMsg) from a first vehicle, generates and broadcasts a cooperative relay message obtained by adding a type code of additional information required for a negotiation to the cooperative request message to surrounding vehicles, receives a cooperative response message (CooperativeResponseMsg) corresponding to the cooperative relay message from at least one second vehicle among the surrounding vehicles, and transmits a message indicating that the negotiation is possible or impossible to the first vehicle on the basis of the cooperative response message,

wherein the cooperative request message or the cooperative response message includes data frames (DFs) about vehicle speed, lane changes, and lane joining,

wherein the cooperative request message or the cooperative response message includes data elements of a temporary identifier (temporaryID), a message ID (MsgID), a previous message ID (preMsgID), and message information (infoMsg),

wherein the message ID (MsgID) is a current driving negotiation session identification value and used in defining a process from driving negotiation request to driving negotiation response as one session,

wherein the message information (infoMsg) is a message type sequence (SequenceofMessageType) required for negotiation information, and

wherein the cooperative response message includes a data element indicating a response agree message or a response refuse message as a response value for the negotiation which is possible or impossible.

2. The driving negotiation apparatus of claim 1 , wherein

a first DF about the vehicle speed includes first data elements about overtaking, deceleration, and stopping as negotiation message information about a speed adjustment plan,

a second DF about the lane changes includes second data elements about avoidance, accidents, cut-ins, and pedestrians as negotiation message information about a lane change plan, and

a third DF about the lane joining includes third data elements about confluences, intersections, and roundabouts as negotiation message information about a joining plan.

3. The driving negotiation apparatus of claim 1 , wherein the cooperative request message or the cooperative response message further includes a data element about a timestamp.

4. The driving negotiation apparatus of claim 1 , wherein the message information is received in a null state from the first vehicle during an initial driving negotiation.

5. The driving negotiation apparatus of claim 1 , wherein, before broadcasting the cooperative relay message to the surrounding vehicles, the at least one processor generates a relevant message associated with a message type of the cooperative request message according to the message type in connection with the additional information, and adds a preset type code of the relevant message to the cooperative relay message, and

when broadcasting the cooperative relay message, the at least one processor broadcasts the relevant message together with the cooperative relay message.

6. The driving negotiation apparatus of claim 1 , wherein the cooperative response message further includes data elements about a message identifier (ID) and a previous message ID of the first vehicle.

7. The driving negotiation apparatus of claim 6 , wherein

the transceiver is installed in road side equipment or a road side unit (RSU).

8. The driving negotiation apparatus of claim 1 , wherein the message indicating that the negotiation is possible or impossible is transmitted to the first vehicle in a form of broadcasting.

9. The driving negotiation apparatus of claim 1 , wherein, after transmitting the message indicating that the negotiation is possible or impossible to the first vehicle, the at least one processor further receives a message for a renegotiation or another cooperative request message in which an identification value of a current driving negotiation session is an identification value of a previous driving negotiation session from the first vehicle.

10. A driving negotiation method comprising:

receiving a cooperative request message (CooperativeRequestMsg) from a first vehicle;

generating a cooperative relay message obtained by adding a type code of additional information required for a negotiation to the cooperative request message;

broadcasting the cooperative relay message to surrounding vehicles;

receiving a cooperative response message (CooperativeResponseMsg) corresponding to the cooperative relay message from at least one second vehicle among the surrounding vehicles; and

transmitting a message indicating that the negotiation is possible or impossible to the first vehicle on the basis of the cooperative response message,

wherein the cooperative request message or the cooperative response message includes data frames (DFs) about vehicle speed, lane changes, and lane joining,

wherein the cooperative request message or the cooperative response message includes data elements of a temporary identifier (temporaryID), a message ID (MsgID), a previous message ID (preMsgID), and message information (infoMsg),

wherein the message ID (MsgID) is a current driving negotiation session identification value and used in defining a process from driving negotiation request to driving negotiation response as one session,

wherein the message information (infoMsg) is a message type sequence (SequenceofMessageType) required for negotiation information, and

wherein the cooperative response message includes a data element indicating a response agree message or a response refuse message as a response value for the negotiation which is possible or impossible.

11. The driving negotiation method of claim 10 , wherein

a first DF about the vehicle speed includes first data elements about overtaking, deceleration, and stopping as negotiation message information about a speed adjustment plan,

a second DF about the lane changes includes second data elements about avoidance, accidents, cut-ins, and pedestrians as negotiation message information about a lane change plan, and

a third DF about the lane joining includes third data elements about confluences, intersections, and roundabouts as negotiation message information about a joining plan.

12. The driving negotiation method of claim 10 , wherein the cooperative request message or the cooperative response message further includes a data element about a timestamp.

13. The driving negotiation method of claim 10 , wherein the message information is received in a null state from the first vehicle during an initial driving negotiation.

14. The driving negotiation method of claim 10 , further comprising, before the broadcasting of the cooperative relay message to the surrounding vehicles, generating a relevant message associated with a message type of the cooperative request message according to the message type in connection with the additional information,

wherein the broadcasting of the cooperative relay message comprises broadcasting the relevant message together with the cooperative relay message.

15. The driving negotiation method of claim 10 , wherein the cooperative response message further includes data elements about a message identifier (ID) and a previous message ID of the first vehicle.

16. The driving negotiation method of claim 10 , wherein the message indicating that the negotiation is possible or impossible is transmitted to the first vehicle in a form of broadcasting.

17. The driving negotiation method of claim 10 , further comprising, after transmitting of the message indicating that the negotiation is possible or impossible to the first vehicle, receiving a message for a renegotiation or another cooperative request message in which an identification value of a current driving negotiation session is an identification value of a previous driving negotiation session from the first vehicle.