EARLY DECISION ON SINGLE-CHANNEL OR DUAL-CHANNEL TRANSMISSION MODE

摘要

A Wireless Local Area Network (WLAN) device includes multiple transmission/reception (TX/RX) chains, and control circuitry. The TX/RX chains include first TX/RX chains tuned to a first channel, and second TX/RX chains that are selectively tuned to the first channel or to a different second channel. The control circuitry is configured to receive, via at least one of the TX/RX chains, a frame preamble signal including a first part and a second part, which are both transmitted over either the first channel alone or over both the first and second channels, and the first part is decoded from the first channel alone, to make a decision, before receiving the entire first part, whether the second part is transmitted over the first channel alone or over both the first and second channels, and to tune the second TX/RX chains to the first channel or to the second channel, based on the decision.