Patent ID: 6226589
Filing Date: 2001-05-01
Classification: H04L,H04W

Abstract:
A system having a management center and a plurality of mobile object terminal units provided in respective mobile objects and communicating with the management center through a radio communications line,said management center comprises:a mobile object data storage unit storing mobile object data which is information about a position and an attribute of the mobile object;an update unit updating the mobile object data in the mobile object data storage unit;a retrieval unit retrieving a mobile object specified by said mobile object terminal unit according to information about a detection condition of the mobile object;a guiding information computation unit computing guiding information used for access to a mobile object detected as a result of a retrieving process performed by said retrieval unit; anda management center side transmission and reception unit transmitting and receiving information to and from said mobile object terminal unit, whereinsaid mobile object terminal unit comprises:a measurement unit measuring a position of said mobile object terminal unit;a notification unit notifying said management center of the position measured by said measurement unit;an input unit obtaining an input of a detection condition for detection of a mobile object;a terminal unit side transmission and reception unit transmitting information about a detection condition obtained by said input unit to said management center, and receiving the guiding information transmitted from the management center; andan output unit outputting the guiding information received from said terminal unit side transmission and reception unit.