Patent ID: 7171218

Claim:
An information provision system, comprising: a mobile unit capable of communication using a plurality of communication subsystems, comprising determination means that determines usability of the plurality of communication subsystems at the current location of said mobile unit; selection means that selects a communication subsystem whereby the current location can be measured with the greatest accuracy, of the communication subsystems that are determined as usable by said determination means; and transmission means that measures said current location using the communication subsystem selected by said selection means and transmits the result of determination of said usability by said determination means, together with information indicating said current location, using the communication subsystem selected by said selection means, and a server, comprising communication means that receives the result of the determination of said usability transmitted by transmission means of the mobile unit together with the information indicating said current location; region specification means that specifies a geographical region to which the current location belongs, based on information indicating said current location received by said communication means; and storage means that stores in updateable fashion as frequency-of-use information the number of times per unit time that a usability determination result has been received by said communication means, in correspondence with the usable communication subsystem indicated by said determination result and the geographical region specified by said region specification means.