Patent ID: 9271176
Filing Date: 2016-02-23
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method implemented in an access point (AP) configured to exchange messages with at least one associated station (STA) via a wireless channel, the AP comprising: a plurality of antennas, radio circuitry configured to transmit and receive via said antennas, and a baseband processor, the method comprising: establishing a backhaul link with at least one co-channel neighboring AP, sending a sounding packet to said at least one associated STA over the wireless channel, obtaining channel state information (CSI) feedback from said at least one co-channel neighboring AP via the backhaul link, determining that the radiation pattern of the AP towards said at least one co-channel neighboring AP can be reduced sufficient to protect the AP from interference from the at least one co-channel neighboring AP, generating a radiation pattern that is reduced towards said at least one co-channel AP, and exchanging messages with at least one associated station (STA) via a wireless channel at the same time as generating said reduced radiation pattern, wherein prior to said determining, generating and exchanging, determining that a network allocation vector (NAV) for the channel is set by one said co-channel neighboring AP, and wherein said determining uses the CSI, obtained via a backhaul link, for a co-channel neighboring AP that has set the NAV.