Network Allocation Vector Setting and Updating During a Transmission Opportunity

An apparatus comprising processing circuitry coupled to memory, wherein the processing circuitry is configured to:

• process, based on signaling received from a transmission opportunity (TXOP) holder station, an initial control frame (ICF) for a TXOP comprising a first duration and a second duration,
• wherein the first duration is set based on a time to respond to the ICF with an initial control response (ICR) and a Short Interframe Space (SIFS), and
• wherein the second duration is set based on a time for data to be transmitted by the TXOP holder station;
• generate, for transmission to the TXOP holder station, the ICR, wherein the ICR comprises the second duration;
• and
• process, based on signaling received from the TXOP holder station, one or more data transmissions during the TXOP.

An apparatus comprising processing circuitry coupled to memory, wherein the processing circuitry is configured to:

• process, based on signaling received from a transmission opportunity (TXOP) holder station, an initial control frame (ICF) for a TXOP destined for a TXOP responder station, the ICF comprising a first duration and a second duration, wherein the apparatus is not the TXOP responder station,
• wherein the first duration is set based on a time to respond to the ICF with an initial control response (ICR) and a Short Interframe Space (SIFS), and
• wherein the second duration is set based on a time for data to be transmitted by the TXOP holder station to the TXOP responder station;
• and
• set a network allocation vector (NAV) duration based on the first duration and the second duration, wherein the apparatus does not contend for a channel during the NAV duration.