2B3 A NOVEL DESIGN AID FOR SCHEDULING POLICY TOWARD SEAMLESS FUTURE-ORIENTED LAND VEHICLE SATELLITE COMMUNICATIONS(Technical session 2B: Vehicle scheduling and communication)

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概要

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• A novel scheme is proposed and demonstrated where satellite visibility viewed from running vehicle is economically and effectively evaluated with such low cost GPS receivers like equipped in automobiles. Our preliminary experiment articulated even economical L1 C/A 1.5GHz GPS receivers can create enough precise database of ground feature blockage, compared to fisheye photograph method, if only two statistical parameters the author proposed are adequately set. Integrating the series of our efforts on this research field, the author also concluded it is feasible to develop an automatic database creation system by the cooperation of the government and the civil with low cost GPS receivers. With this database, the communication satellite's visibility to a running vehicle can be predicted. Satellites visibility chart against time can be drawn as well. As the chart reflects the status quo including the traffic jams and signal blockage correctly, scheduling strategy designers can make a precise judge to decide the best scheduling policy. This scheme can also be meaningfully taken advantage of as a test-bed to examine the effectiveness of a resource reservation mechanism for such a prioritized vehicle like an emergency vehicle in near future's Land Vehicle Satellite Communication society

• 2006-07-18

著者

• Takahashi Masato

  University Of Tokyo:national Institute Of Information And Communications Technology

関連論文

• 2B3 A NOVEL DESIGN AID FOR SCHEDULING POLICY TOWARD SEAMLESS FUTURE-ORIENTED LAND VEHICLE SATELLITE COMMUNICATIONS(Technical session 2B: Vehicle scheduling and communication)

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