APPARATUS AND METHOD FOR MANAGING BEACON MESSAGING PERIOD OF VEHICULAR COMMUNICATION

• US 20140133347A1
• Filed: 04/01/2013
• Published: 05/15/2014
• Est. Priority Date: 11/13/2012
• Status: Active Grant

• Current Assignee: Kyungpook National University Industry-Academic Cooperation (Kyungpook National University)
• Original Assignee: Kyungpook National University Industry-Academic Cooperation (Kyungpook National University)
• Inventors: HAN, Dong Seog, JOO, Jhihoon
• Granted Patent: US 9,510,270 B2
• Time in Patent Office: Days
• US Class Current: 370/253
• CPC Class Codes: H04W 48/12 using downlink control channel

Abstract

An apparatus and a method for managing beacon messaging period in a vehicular communication provide adaptive control on beacon messaging period by using packet delivery ratio (PDR) which is measured.

Claims

1. An apparatus for managing a beacon messaging period in a vehicular communication, the apparatus comprising:

a packet delivery ratio (PDR) measuring unit which measures a PDR;

a PDR determining unit which compares the PDR with a threshold; and

a messaging period managing unit which increases the beacon messaging period, when determining via the PDR determining unit that the PDR is less than the threshold.

2. The apparatus of claim 1, when determining via the PDR determining unit that the PDR is equal to, or greater than the threshold, the messaging period managing unit sets the beacon messaging period as a reference messaging period.

3. The apparatus of claim 2, wherein the reference messaging period is 100 ms.

4. The apparatus of claim 1, further comprising:

a road density measuring unit which measures a vehicular density of a road on which vehicles are placed;

a driving lane density measuring unit which measures vehicular density of a driving lane on which the vehicles are placed; and

a density comparing unit which compares the road density and the driving lane density, wherein

the messaging period managing unit decreases the beacon messaging period, when determining via the density comparing unit that the driving lane density is less than the road density by a predetermined ratio.

5. A method for managing a beacon messaging period in a vehicular communication, the method comprising:

measuring a packet delivery ratio (PDR) (step A);

comparing the PDR with a threshold (step B); and

increasing the beacon messaging period, when determining at the step (B) that the PDR is less than the threshold (step C-1).

6. The method of claim 5, when determining at the step (B) that the PDR is equal to, or greater than the threshold, comprising setting the beacon messaging period as a reference messaging period (step C-2).

7. The method of claim 6, wherein the reference messaging period is 100 ms.

8. The method of claim 5, further comprising:

measuring a vehicular density of a road on which vehicles are placed (step D);

measuring vehicular density of a driving lane on which the vehicles are placed (step E);

comparing the road density and the driving lane density with each other (step F); and

decreasing the beacon messaging period, when determining at the step (F) that the driving lane density is less than the road density by a predetermined ratio (step G).