System and method for providing channel information of roadside unit
First Claim
1. A method for providing channel information of a roadside unit (RSU), comprising:
- predicting a direction of travel of an on-board unit (OBU) by one of a current RSU communicating with the OBU and a server coupled to the current RSU;
transmitting to the OBU information of a next RSU that will communicate with the OBU; and
communicating between the OBU and the next RSU using the transmitted information when the OBU enters a communication zone of the next RSU.
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Accused Products
Abstract
A channel search in an intelligent transportation system is disclosed. A roadside unit (RSU) currently communicating with an on-board unit (OBU) or a server connected to the RSU predicts a direction in which the OBU is moving, searches or recognizes an RSU managing the predicted OBU and channel information and/or service information of the RSU, and transmits the searched or recognized information to the OBU. Therefore, when the OBU enters a new communication zone, the OBU communicates with the corresponding RSU by applying the previously received channel information. As a result, the OBU is informed of the channels of the next RSU in advance, thereby reducing a channel search time and receiving a wanted service.
25 Citations
27 Claims
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1. A method for providing channel information of a roadside unit (RSU), comprising:
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predicting a direction of travel of an on-board unit (OBU) by one of a current RSU communicating with the OBU and a server coupled to the current RSU;
transmitting to the OBU information of a next RSU that will communicate with the OBU; and
communicating between the OBU and the next RSU using the transmitted information when the OBU enters a communication zone of the next RSU. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for providing channel information of a roadside unit (RSU), comprising:
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searching a communication zone prior to a current communication zone;
predicting a direction of movement an on-board unit (OBU) by using information of at least one of an RSU of the prior communication zone and an RSU of the current communication zone; and
obtaining information of a next RSU which will manage the OBU. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for providing channel information of a roadside unit (RSU), comprising:
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predicting a direction of movement of an on-board unit (OBU) by at least one of a current RSU currently communicating with the OBU and a server coupled to the current RSU;
determining a next RSU that is predicted to next manage the OBU and searching at least one of channel information and service information of the next RSU;
transmitting the searched information of the next RSU from the current RSU to the OBU; and
communicating between the OBU and the next RSU using the transmitted information when the OBU enters a communication zone of the next RSU. - View Dependent Claims (16, 17, 18)
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19. A system for providing channel information of a roadside unit (RSU), comprising:
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a first RSU covering a first communication zone, and configured to communicate with an on-board unit (OBU), the OBU being in transit from the first communication zone to a second communication zone; and
a second RSU covering the second communication zone, and configured to communicate with the OBU when the OBU enters the second communication zone, wherein the first RSU provides information of the second RSU to the OBU while the OBU is in the first communication zone, and wherein the OBU uses the information of the second RSU to establish communication with the second RSU upon entering the second communication zone. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification