PORTABLE ROUTER WITH VARIABLE WIFI TRANSMISSION POWER, AND METHOD OF REDUCING POWER CONSUMPTION THEREOF

摘要

PURPOSE: A portable routing device having variable wireless fidelity (Wi-Fi) transmission power and a power consumption reducing method thereof are provided to appropriately control transmission power of a Wi-Fi signal according to a transfer rate of a cellular signal and the Wi-Fi signal when a power source does not be supplied from outside. CONSTITUTION: A gateway unit (200) converts a cellular data packet signal from a cellular modem into a Wi-Fi data packet signal. A Wi-Fi modem (300) converts the Wi-Fi data packet signal from the gateway unit into a Wi-Fi signal which follows a prescribed communications protocol. A power amplification unit (400) amplifies transmission power of the Wi-Fi signal from the Wi-Fi modem. A transmission power controller (500) controls gains of the power amplification unit based on a cellular transfer rate based on the cellular signal and a Wi-Fi transfer rate of the Wi-Fi signal. [Reference numerals] (100) Cellular modulator/demodulator unit; (200) Gateway unit; (300) WiFi modulator/demodulator unit; (50) Inside power unit; (500) Transmission power controller