Patent ID: 8687572

Claim:
An apparatus, comprising: a transceiver capable of communicating in a first basic service set (BSS) of a wireless network that is operable adjacent to a second basic service set (BSS) of said wireless network, wherein the transceiver has instructions to perform primary channel selection according to an algorithm wherein: IF the first BSS and the second BSS contain 40 MHz channels that at least partially overlap, THEN selecting a primary channel of said first BSS to be next to a primary channel of said second BSS so that said first and said second BSSs avoid collisions with each other due to said at least partial overlapping; wherein said transceiver is operable as an Access Point (AP) of said first BSS and operates conforming to an Institute for Electronic and Electrical Engineers (IEEE) 802.11 ac standard and said second BSS operates conforming to an IEEE 802.11n standard; wherein said AP of said 802.11 ac BSS first scans a 5 GHz band for four contiguous empty channels for 80 MHz PPDU transmissions and if there are four contiguous empty channels available, said AP uses those four contiguous empty channels for said first BSS operation and if there are fewer than four contiguous empty channels, said AP selects four contiguous channels that have least active BSSs; wherein, if there is a 40 MHz 802.11n BSS operating in said selected four channels, said AP scans for a primary channel of the 40 MHz 802.11n BSS and if possible selects a channel that is next to said primary channel of the 40 MHz 802.11n BSS as the primary channel of the 802.11 ac BSS; wherein if said 802.11ac AP can select a primary channel that is next to a primary channel of said 802.11n BSS then said AP enables 40 MHz PPDU transmissions across a 40 MHz channel boundary, otherwise said AP disables said 40 MHz PPDU transmissions across said 40 MHz channel boundary.