WiFi backoff timer

A communication device, comprising:

• a wireless network interface device that is configured to communicate simultaneously via a plurality of channel segments having i) a first channel segment in a first radio frequency (RF) band, and ii) a second channel segment in a second RF band, wherein the wireless network interface device comprises:
• one or more integrated circuit (IC) devices,
• a first backoff timer that corresponds to the first channel segment, the first backoff timer implemented on the one or more IC devices, and
• a second backoff timer that corresponds to the second channel segment, the second backoff timer implemented on the one or more IC devices;
• wherein the one or more IC devices are configured to:
• maintain the first backoff timer to determine when the communication device can transmit via the first channel segment,
• maintain the second backoff timer to determine when the communication device can transmit via the second channel segment,
• determine whether the communication device is permitted to transmit via the first channel segment simultaneously with receiving via the second channel segment,
• in response to determining that the communication device is not permitted to transmit via the first channel segment simultaneously with receiving via the second channel segment, suspend the second backoff counter when transmitting via the first channel segment, and
• in response to determining that the communication device is permitted to transmit via the first channel segment simultaneously with receiving via the second channel segment, control the second backoff counter to count while transmitting via the first channel segment.