1. Field of the Invention
The present invention generally relates to a method for RF output power control of a wireless communication device and, more particularly, to a method for output power control by switching the wireless communication device between different modes according to a state parameter corresponding to a received beacon.
2. Description of the Prior Art
In recent years, applications in fields such as mobile communications as well as wireless local area network (WLAN) have attracted considerable attention. For wireless communication devices such as mobile phones, base stations, wireless network interface cards and access points, and so forth, it is necessary to reduce power consumption so as to prevent ageing and degradation of the components. Especially, portable wireless communication devices require batteries as power supply; therefore, it is necessary for such devices to reduce power consumption so as to prolong the battery lifetime. Moreover, in order to prevent human from absorbing the electromagnetic waves, it is required that the RF energy of the nuisance radiation from the wireless communication devices must be conserved when the devices are not operating or operating at a short distance.
In view of the power consumption, most of the power is consumed by the transmitter of wireless communication devices when the transmitter is transmitting RF signals. Accordingly, the present invention provides a method for RF output power control of a wireless communication device so as to reduce power consumption and eliminate nuisance radiation on one hand and leave the link quality of signal transmission unaffected on the other.