V2X communication device and geo-networking transmission method

1. A geo-networking transmission method of a V2X communication apparatus, comprising:

configuring location information, wherein the location information includes information on a V2X communication apparatus executing a geo-networking protocol;

selecting a forwarder candidate among neighboring V2X communication apparatuses included in a location table;

determining a forwarder based on a distance between the forwarder candidate and a destination, and setting an address of the determined forwarder as a link layer address of a next hop; and

transmitting a geo-networking packet based on the link layer address,

wherein the geo-networking packet includes forwarder level information indicating whether the geo-networking packet is transmitted to a most forwardable router or to a second forwardable router.

2. The geo-networking transmission method of claim 1 , wherein the location information includes at least one of geo-network address information, link layer address information, type information, and position vector information on at least one of the neighboring V2X communication apparatuses from which the V2X communication apparatus receives the geo-networking packet.

3. The geo-networking transmission method of claim 2 , wherein selecting the forwarder candidate is performed based on an updated number of the position vector of the neighboring V2X communication apparatus.

4. The geo-networking transmission method of claim 2 , wherein selecting the forwarder candidate further includes:

estimating a current location of the neighboring V2X communication apparatus; and

selecting the forwarder candidate based on the estimated current location, an effective communication range, and a distance to a destination of the neighboring V2X communication apparatus.

5. The geo-networking transmission method of claim 2 , wherein selecting the forwarder candidate further includes:

obtaining a reliability value for the neighboring V2X communication apparatus; and

selecting the forwarder candidate based on the reliability value.

6. The geo-networking transmission method of claim 5 , wherein the reliability value is obtained based on an updated number for the position vector of the neighboring V2X communication apparatus, and an amount of change in distance between the V2X communication apparatus and the neighboring V2X communication apparatus.

7. A V2X communication apparatus, comprising:

a memory for storing data;

a transceiver for transmitting and receiving a radio signal including a geo-networking packet; and

a processor configured to control the memory and the transceiver, wherein the processor is further configured to:

configure location information, wherein the location information includes information on a V2X communication apparatus executing a geo-networking protocol,

select a forwarder candidate among neighboring V2X communication apparatuses included in a location table,

determine a forwarder based on a distance between the forwarder candidate and a destination, and setting an address of the determined forwarder as a link layer address of a next hop, and

transmit a geo-networking packet based on the link layer address,

wherein the geo-networking packet includes forwarder level information indicating whether the geo-networking packet is transmitted to a most forwardable router or to a second forwardable router.

8. The V2X communication apparatus of claim 7 , wherein the location information includes at least one of geo-network address information, link layer address information, type information, and position vector information on at least one of the neighboring V2X communication apparatuses from which the V2X communication apparatus receives the geo-networking packet.

9. The V2X communication apparatus of claim 8 , wherein selecting the forwarder candidate is performed based on an updated number for the position vector of the neighboring V2X communication apparatus.

10. The V2X communication apparatus of claim 8 , wherein selecting the forwarder candidate is performed by estimating a current location of the neighboring V2X communication apparatus, and selecting the forwarder candidate based on the estimated current location, an effective communication range, and a distance to a destination of the neighboring V2X communication apparatus.

11. The V2X communication apparatus of claim 8 , wherein selecting the forwarder candidate is performed by obtaining a reliability value for the neighboring V2X communication apparatus, and selecting the forwarder candidate based on the reliability value.

12. The V2X communication apparatus of claim 11 , wherein the reliability value is obtained based on an updated number for the position vector of the neighboring V2X communication apparatus, and an amount of change in distance between the V2X communication apparatus and the neighboring V2X communication apparatus.