Enhanced channel access mechanism for improving performance in dense wifi environments
First Claim
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1. An apparatus of a station (STA) configured to operate in a wireless local area network (WLAN) comprising a basic service set (BSS), the BSS including at least the STA and an access point (AP), the apparatus comprising:
- memory; and
processing circuitry, configured to;
detect a frame from an overlapping WLAN;
determine from the detected frame if simultaneous channel access is allowed;
determine a duration of channel access from the detected frame;
if simultaneous channel access is allowed, adjust transmission parameters including a transmit power level to reduce interference with the overlapping WLAN, the processing circuitry is to adjust the transmission parameters based on signaling previously received from the AP; and
cause the STA to transmit a second frame to the AP during the duration of the detected frame, the second frame transmitted on a same channel as the detected frame,wherein in response to detection of the frame from the overlapping WLAN indicating that simultaneous channel access is allowed, the processing circuitry is further configured to;
discontinue acquisition of the detected frame; and
start a simultaneous channel access period for restriction of transmit power for the duration,wherein the processing circuitry is to cause the STA to transmit the second frame to the AP during the simultaneous channel access period.
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Abstract
Disclosed in some examples are methods, devices (e.g., STAs and APs), and machine readable mediums which utilize a Simultaneous Channel Access (SCA) to allow transmissions of a first wireless network to take place while transmissions are already ongoing in a second wireless network (the Principal Channel Access (PCA)). The SCA allows devices which support SCA to transmit frames even when other nearby devices on other networks have already accessed the medium and are engaged in frame transmission.
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Citations
17 Claims
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1. An apparatus of a station (STA) configured to operate in a wireless local area network (WLAN) comprising a basic service set (BSS), the BSS including at least the STA and an access point (AP), the apparatus comprising:
- memory; and
processing circuitry, configured to;detect a frame from an overlapping WLAN; determine from the detected frame if simultaneous channel access is allowed; determine a duration of channel access from the detected frame; if simultaneous channel access is allowed, adjust transmission parameters including a transmit power level to reduce interference with the overlapping WLAN, the processing circuitry is to adjust the transmission parameters based on signaling previously received from the AP; and cause the STA to transmit a second frame to the AP during the duration of the detected frame, the second frame transmitted on a same channel as the detected frame, wherein in response to detection of the frame from the overlapping WLAN indicating that simultaneous channel access is allowed, the processing circuitry is further configured to; discontinue acquisition of the detected frame; and start a simultaneous channel access period for restriction of transmit power for the duration, wherein the processing circuitry is to cause the STA to transmit the second frame to the AP during the simultaneous channel access period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- memory; and
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10. A method performed by a station (STA) configured to operate in a wireless local area network (WLAN) comprising a basic service set (BSS), the BSS including at least the STA and an access point (AP), the method comprising:
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detecting a frame from an overlapping WLAN, the overlapping WLAN using a same channel as the BSS of the STA; determining from the detected frame if simultaneous channel access is allowed; determining a duration of channel access from the detected frame; if simultaneous channel access is allowed, adjusting transmission parameters including a transmit power level to reduce interference with the overlapping WLAN, wherein adjusting transmission parameters comprises adjusting the transmission parameters based on signaling previously received from the AP; and configuring the STA to transmit a second frame to the AP during the duration of the detected frame, the second frame transmitted on the same channel as the detected frame, wherein in response to detection of the frame from the overlapping WLAN indicating that simultaneous channel access is allowed, the method further comprises; discontinuing acquisition of the detected frame; and starting a simultaneous channel access period for restriction of transmit power for the duration, wherein the method comprises transmission of the second frame to the AP during the simultaneous channel access period. - View Dependent Claims (11, 12, 13)
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14. A non-transitory computer-readable storage medium that stores instructions for execution by processing circuitry of a station (STA), the STA configured to operate in a wireless local area network (WLAN) comprising a basic service set (BSS), the BSS including at least the STA and an access point (AP), the processing circuitry configured to:
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detect a frame from an overlapping WLAN; determine from the detected frame if simultaneous channel access is allowed; determine a duration of channel access from the detected frame; if simultaneous channel access is allowed, adjust transmission parameters including a transmit power level to reduce interference with the overlapping WLAN, the processing circuitry to adjust the transmission parameters based on signaling previously received from the AP; and cause the STA to transmit a second frame to the AP during the duration of the detected frame, the second frame transmitted on a same channel as the detected frame, wherein in response to detection of the frame from the overlapping WLAN indicating that simultaneous channel access is allowed, the processing circuitry is further configured to; discontinue acquisition of the detected frame; and start a simultaneous channel access period for restriction of transmit power for the duration, wherein the processing circuitry is to cause the STA to transmit the second frame to the AP during the simultaneous channel access period. - View Dependent Claims (15, 16, 17)
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Specification