COMMUNICATION SYSTEM BETWEEN VEHICLE AND ROAD
PROBLEM TO BE SOLVED: To provide a communication system between a vehicle and a road, capable of narrowing an uncertain area and obtaining a desired reception level. SOLUTION: By the use of a leakage waveguide 1 for a downlink from roadside radio equipment to mobile equipment, and an ordinary antenn...
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a communication system between a vehicle and a road, capable of narrowing an uncertain area and obtaining a desired reception level. SOLUTION: By the use of a leakage waveguide 1 for a downlink from roadside radio equipment to mobile equipment, and an ordinary antenna 3 for an uplink from the mobile equipment to the roadside equipment, an uncertain area in the downlink can be narrowed down and desired reception level in the uplink can be obtained. COPYRIGHT: (C)2004,JPO |
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