Abstract: A method for controlling power levels of radio signals output by a wireless communications device is disclosed. The wireless communications device includes an RF transceiver. The method includes utilizing the RF transceiver of the wireless communications device to receive RF signals output by a wireless transmission device, and adjusting the power of RF signals output by the wireless communications device according to the power of the RF signals received by the wireless communications device.

Abstract: An adapter for internetworking a WWAN and a WLAN used as an access point in mobile wireless communication applications. The adapter includes a physical layer circuit and a data link layer circuit. The physical layer circuit includes a first connecting port and a second connecting port. The data link layer circuit includes a first media access controller, a second media access controller, a flow controller, and a bridge chipset for transforming the format of data packets.