DYNAMIC VOLTAGE AND FREQUENCY SCALING IN WIRELESS MODEMS

摘要

Methods and apparatuses are described in which dynamic voltage and frequency scaling may be used to save power when processing packets in a wireless communications device. In some cases, inframe detection may allow the device to determine whether to transition from a first (e.g., lower) voltage level to a second (e.g., higher) voltage level to process one or more packets of a received frame. For some packet types the first voltage level may be maintained. In other cases, the device may determine a bandwidth to use from among multiple bandwidths supported by the device. The bandwidth may be determined based on channel conditions. A voltage level may be identified that corresponds to the determined bandwidth and a processing voltage may be scaled to the identified voltage level. The device may be configured to operate in wireless local area network (WLAN) and/or in a cellular network (e.g., LTE).

主权项

1. A method for wireless communications, comprising:
operating at a first voltage level in a wireless communications device; detecting, within a received frame, a frame metric associated with one or more packets of the received frame; and determining whether to transition to a second voltage level to process at least a portion of the one or more packets of the received frame based on the detected frame metric.