Patent ID: 11877274
Assignee: MARVELL ASIA PTE LTD
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A communication device, comprising:
a wireless network interface device having one or more integrated circuit (IC) devices configured to:
receive a first packet that includes i) a first indication of a first frequency segment that a second communication device utilized to transmit the first packet and ii) a first bitmap having first bits corresponding to respective first frequency subchannels within the first frequency segment, wherein each first bit set to a particular bit value indicates nothing was transmitted by the second communication device in the corresponding first frequency subchannel when transmitting the first packet,
simultaneously with receiving the first packet, receive a second packet to include i) a second indication of a second frequency segment that the second communication device utilized to transmit the second packet and ii) a second bitmap having second bits corresponding to respective second frequency subchannels within the second frequency segment, wherein each second bit set to the particular bit value indicates nothing was transmitted by the second communication device in the corresponding second frequency subchannel when transmitting the second packet,
use the first indication and the first bitmap to determine a first communication channel via which the first packet was received, the first communication channel spanning the first frequency segment and omitting any first frequency subchannels corresponding to first bits in the first bitmap set to the particular bit value, and
use the second indication and the second bitmap to determine a second communication channel via which the second packet was received, the second communication channel spanning the second frequency segment and omitting any second frequency subchannels corresponding to second bits in the second bitmap set to the particular bit value.