Transmission opportunity (TXOP) duration field disable setting in high efficiency signal A (HE-SIG-A)
Methods, computer readable media, and wireless apparatuses are disclosed for a TXOP duration field disable setting in a HE preamble, such as HE-SIG-A. An apparatus of a wireless device can include processing circuitry configured to decode a HE PPDU received from a second wireless device, the HE PPDU including a first TXOP duration field in a PHY portion of the HE PPDU. The processing circuitry can detect whether the TXOP duration field includes a disable flag based on bit values of the TXOP duration field. The disable flag can indicate absence of duration information in the TXOP duration field. Upon detecting the disable flag, a response HE PPDU can be encoded for transmission to the second wireless device. The response HE PPDU can include a second TXOP duration field with a disable flag within a PHY portion of the response HE PPDU.
1. An apparatus of a high-efficient station (HE STA) comprising: memory; and processing circuitry coupled to the memory, the processing circuitry configured to:
decode a high efficiency (HE) physical-layer convergence procedure protocol data unit (HE PPDU) received from an access point (AP), the received HE PPDU comprising a transmission opportunity (TXOP) duration parameter, the received HE-PPDU comprising a trigger frame soliciting a response,
determine if the TXOP duration parameter of the received HE PPDU indicates duration information for network allocation vector (NAV) setting or if the TXOP duration parameter comprises a disable flag indicating no duration information;
if the TXOP duration parameter comprises the disable flag, the processing circuitry is configured to refrain from setting a NAV of the HE STA based on the TXOP duration parameter;
if the TXOP duration parameter indicates duration information, the processing circuitry is configured to set the NAV of the HE STA based on the duration information indicated by the TXOP duration parameter; and
encode a HE trigger-based (TB) PPDU for transmission to the AP in response to the received HE PPDU,
wherein the processing circuitry is to set a TXOP duration parameter of the HE TB PPDU to the disable flag to indicate no duration information if the TXOP duration parameter of the received HE PPDU comprised the disable flag, and
wherein the processing circuitry is to set the TXOP duration parameter of the HE TB PPDU based on the TXOP duration parameter of the received HE PPDU if the TXOP duration parameter of the received HE PPDU indicated duration information.
2. The apparatus of claim 1 wherein the TXOP duration parameter of the received HE PPDU is a physical-layer (PHY) parameter.
3. The apparatus of claim 2 wherein the received HE PPDU comprises a HE signal A field (HE-SIG-A), and
wherein a value of the TXOP duration parameter of the received HE PPDU is indicated in a TXOP field of the HE-SIG-A.
4. The apparatus of claim 1 wherein if the TXOP duration parameter of the received HE PPDU comprises the disable flag, the duration information is unspecified, the processing circuitry is configured to refrain from updating the NAV of the HE STA based on the TXOP duration parameter.
5. The apparatus of claim 1 wherein if the TXOP duration parameter of the received HE PPDU comprises the disable flag, the NAV is disabled.
6. The apparatus of claim 1 , wherein the memory is configured to store an indication of the TXOP duration parameter of the received HE PPDU.
7. The apparatus of claim 1 further comprising transceiver circuitry coupled to the processing circuitry.
8. The apparatus of claim 7 further comprising two or more antennas coupled to the transceiver circuitry configured for multiple-input multiple output (MIMO) communication.
9. A non-transitory computer-readable storage medium that stores instructions for execution by processing circuitry of a high-efficient station (HE STA) to configure the HE STA to:
decode a high efficiency (HE) physical-layer convergence procedure protocol data unit (HE PPDU) received from an access point (AP), the received HE PPDU comprising a transmission opportunity (TXOP) duration parameter, the received HE-PPDU comprising a trigger frame soliciting a response,
determine if the TXOP duration parameter of the received HE PPDU indicates duration information for network allocation vector (NAV) setting or if the TXOP duration parameter comprises a disable flag indicating no duration information;
if the TXOP duration parameter comprises the disable flag, the processing circuitry is configured to refrain from setting a NAV of the HE STA based on the TXOP duration parameter;
if the TXOP duration parameter indicates duration information, the processing circuitry is configured to set the NAV of the HE STA based on the duration information indicated by the TXOP duration parameter; and
encode a HE trigger-based (TB) PPDU for transmission to the AP in response to the received HE PPDU,
wherein the processing circuitry is to set a TXOP duration parameter of the HE TB PPDU to the disable flag to indicate no duration information if the TXOP duration parameter of the received HE PPDU comprised the disable flag, and
wherein the processing circuitry is to set the TXOP duration parameter of the HE TB PPDU based on the TXOP duration parameter of the received HE PPDU if the TXOP duration parameter of the received HE PPDU indicated duration information.
10. The non-transitory computer-readable storage medium of claim 9 wherein the TXOP duration parameter of the received HE PPDU is a physical-layer (PHY) parameter.
11. The non-transitory computer-readable storage medium of claim 10 wherein the received HE PPDU comprises a HE signal A field (HE-SIG-A), and
wherein a value of the TXOP duration parameter of the received HE PPDU is indicated in a TXOP field of the HE-SIG-A.
12. The non-transitory computer-readable storage medium of claim 9 wherein if the TXOP duration parameter of the received HE PPDU comprises the disable flag, the duration information is unspecified, the processing circuitry is configured to refrain from updating the NAV of the HE STA based on the TXOP duration parameter.
13. The non-transitory computer-readable storage medium of claim 9 wherein if the TXOP duration parameter of the received HE PPDU comprises the disable flag, the NAV is disabled.
14. An apparatus of an access point (AP) comprising: memory; and processing circuitry coupled to the memory, the processing circuitry configured to:
encode a high efficiency (HE) physical-layer convergence procedure protocol data unit (HE PPDU) for transmission to an HE station (HE STA), the transmitted HE PPDU comprising a transmission opportunity (TXOP) duration parameter, the transmitted HE-PPDU comprising a trigger frame soliciting a response,
wherein the processing circuitry is configured to:
set the TXOP duration parameter of the transmitted HE PPDU to indicate duration information for network allocation vector (NAV) setting by the HE STA or set the TXOP duration parameter to a disable flag to indicate no duration information;
decode a HE trigger-based (TB) PPDU received from the HE STA in response to the transmitted HE PPDU,
wherein a TXOP duration parameter of the HE TB PPDU comprises the disable flag if the TXOP duration parameter of the transmitted HE PPDU comprised the disable flag, and
wherein the TXOP duration parameter of the HE TB PPDU is set based on the TXOP duration parameter of the transmitted HE PPDU if the TXOP duration parameter of the transmitted HE PPDU indicated duration information.
15. The apparatus of claim 14 , wherein to disable the NAV of the HE STA, the wherein the processing circuitry is configured to set the TXOP duration parameter to the disable flag.
16. The apparatus of claim 15 wherein the TXOP duration parameter of the received HE PPDU is a physical-layer (PHY) parameter.
17. The apparatus of claim 15 wherein the received HE PPDU comprises a HE signal A field (HE-SIG-A), and
wherein a value of the TXOP duration parameter of the received HE PPDU is indicated in a TXOP field of the HE-SIG-A.
18. The apparatus of claim 15 wherein if the TXOP duration parameter of the received HE PPDU comprises the disable flag, the duration information is unspecified, the processing circuitry is configured to refrain from updating the NAV based on the TXOP duration parameter.
19. The apparatus of claim 15 wherein if the TXOP duration parameter of the received HE PPDU comprises the disable flag, the NAV is disabled.
20. The apparatus of claim 14 , wherein the memory is configured to store an indication of the TXOP duration parameter of the received HE PPDU.