LINK ADAPTATION AND DEVICE IN ACTIVE SCANNING METHOD

摘要

Disclosed are a link adaptation method and device in an active scanning method. The link adaptation method transmits a the probe request frame comprising null data packet announcement (NDPA) information elements, transmits a null data packet (NDP) frame comprising only a physical layer convergence protocol (PLCP) header after transmitting the probe request frame, and receives a the probe response frame comprising feedback information elements measured based on the NDP frame. Therefore, the invention is capable of improving data transmission efficiency by using a modulation coding scheme (MCS) suitable for a channel state from initial connection.

主权项

1. A method for link adaptation, the link adaptation comprising:
transmitting a probe request frame including a Null Data Packet Announcement (NDPA) information element; transmitting a Null Data Packet (NDP) frame including only a Physical Layer Convergence Protocol (PLCP) header after transmitting the probe request frame; and receiving a probe response frame including a feedback information element determined based on the NDP frame, wherein the NDPA information element includes NDP information indicating whether or not the probe request frame is used as the NDPA frame, and the feedback information element includes at least one of Modulation and Coding Scheme (MCS) feedback information and sounding feedback information.