MOBILE WIRELESS COMMUNICATION TERMINAL AND MOBILE WIRELESS COMMUNICATION SYSTEM

摘要

Receiving sensitivity deterioration in wireless communication due to a spurious radiation wave generated from a card reader writer is suppressed, in the case where a noncontact IC card reader writer or a noncontact IC card is mounted in a cellular phone terminal. The cellular phone terminal provided with the noncontact IC card reader writer performs measurement of a wireless status upon reception (step S1) and transmission power setting (step S2), and when an instruction to start a reader writer function is inputted from a user (step S3), wireless status deterioration due to spurious radiation from the reader writer is predicted (step S4). Then, the cellular phone terminal judges whether control to reduce the transmission speed is necessary or not, based on a value of the deterioration predicted wireless status (step S5), and when judged necessary, the transmission speed is reduced (step S6).