Apparatus and methods for TXOP duration field in PHY header
AssigneeAtlas Global Technologies LLC
InventorsYujin Noh, Yongho Seok
Life of this patent
Estimating the term…
Abstract
A method implemented by a station (STA) in a Wireless Local Area Network (WLAN) to disregard a Network Allocation Vector (NAV) maintained by the STA. The method includes receiving a first frame from an Access Point (AP), determining whether the NAV maintained by the STA was previously set using a duration indicated in a second frame that (1) was received by the STA prior to receiving the first frame and (2) originated from the AP, and transmitting a third frame to the AP as an immediate response to the first frame without considering the NAV maintained by the STA when a determination is made that the NAV maintained by the STA was previously set using the duration indicated in the second frame that originated from the AP.
Claims20
A method implemented by a station (STA) in a Wireless Local Area Network (WLAN) to disregard a Network Allocation Vector (NAV) maintained by the STA, the method comprising:
- receiving a first High Efficiency Physical Layer Protocol Data Unit (HE PPDU) comprising a first Basic Service Set (BSS) indicator, that elicits an immediate response from the STA;
- determining whether the NAV maintained by the STA was previously set using a duration indicated in a duration field of an HE-SIG-A field of a preamble portion of a second HE PPDU that (1) was received by the STA prior to receiving the first HE PPDU and (2) comprises a second BSS indicator equal to the first BSS indicator;
- transmitting a third HE PPDU comprising a third BSS indicator to an AP as a Short Inter-Frame Space (SIFS) in response to receiving the first HE PPDU without considering the NAV maintained by the STA when a determination is made that the NAV maintained by the STA was previously set using the duration indicated in the second HE PPDU;
- and
- determining whether the first, second, and the third HE PPDUs contain a same BSS indicator based on a BSS color field of a preamble portion of a corresponding HE PPDU.
A station operating in a Wireless Local Area Network (WLAN), the station comprising:
- a set of one or more processors;
- and
- a non-transitory machine-readable storage medium having stored therein instructions, which when executed by the set of one or more processors, causes the station to:
- receive a first High Efficiency Physical Layer Protocol Data Unit (HE PPDU) comprising a first Basic Service Set (BSS) indicator, that elicits an immediate response from the STA;
- determine whether a Network Allocation Vector (NAV) maintained by the station was previously set using a duration indicated in a duration field of an HE-SIG-A field of a preamble portion of a second HE PPDU that (1) was received by the station prior to receiving the first HE PPDU and (2) comprises a second BSS indicator equal to the first BSS indicator;
- transmit a third HE PPDU comprising a third BSS indicator to an AP as a Short Inter-Frame Space (SIFS) in response to receiving the first HE PPDU without considering the NAV maintained by the station when a determination is made that the NAV maintained by the station was previously set using the duration indicated in the second HE PPDU;
- and
- determine whether the first, second, and the third HE PPDUs contain a same BSS indicator based on a BSS color field of a preamble portion of a corresponding HE PPDU.
A non-transitory machine-readable medium storing instructions, which when executed by one or more processors of a station (STA) in a Wireless Local Area Network (WLAN), causes the STA to:
- receive a first High Efficiency Physical Layer Protocol Data Unit (HE PPDU) comprising a first Basic Service Set (BSS) indicator, that elicits an immediate response from the STA;
- determine whether the Network Allocation Vector (NAV) maintained by the STA was previously set using a duration indicated in a duration field of an HE-SIG-A field of a preamble portion of a second HE PPDU that (1) was received by the STA prior to receiving the first HE PPDU and (2) comprises a second BSS indicator equal to the first BSS indicator;
- transmit a third HE PPDU comprising a third BSS indicator to an AP as a Short Inter-Frame Space (SIFS) in response to receiving the first HE PPDU without considering the NAV maintained by the STA when a determination is made that the NAV maintained by the STA was previously set using the duration indicated in the second HE PPDU;
- and
- determining whether the first, second, and the third HE PPDUs contain a same BSS indicator based on a BSS color field of a preamble portion of a corresponding HE PPDU.
Dependencies are inferred from the claim text.