Method for reducing erroneous network allocation vector (NAV) updates in wireless LAN system, and device therefor
AssigneeLG Electronics Inc.
InventorsJeongki Kim, Kiseon Ryu, Hangyu Cho
Life of this patent
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Abstract
When an AP senses a BSS Color collision with a neighbor BSS in a wireless LAN system, the AP can notify a STA of the collision through information indicating whether the BSS Color is deactivated, and the STA performs intra-PDDU power saving only when the information indicating whether the BSS Color is deactivated does not indicate a deactivation.
Claims10
A method for reducing erroneous network allocation vector (NAV) updates by a station (STA) in a wireless local area network (WLAN) system, the method comprising:
- maintaining an inter-BSS network allocation vector (NAV) for an inter-BSS frame and an intra-BSS NAV for an intra-BSS frame;
- receiving, from an access point (AP), basic service set (BSS) color disabled information indicating that a BSS color is disabled;
- receiving a frame including BSS color information and a Transmission Opportunity (TXOP) duration field value,
- wherein the TXOP duration field value of the frame is set to a second value which is out of a first range of values in response to the BSS color disabled information indicating the BSS color is disabled,
- wherein the first range of values of the TXOP duration field are for TXOP duration information, and
- wherein the second value of the TXOP duration field value is for preventing an update of both the inter-BSS NAV and the intra-BSS NAV upon receiving the frame.
A method for reducing erroneous network allocation vector (NAV) updates of a station (STA) by an access point (AP) in a wireless local area network (WLAN) system, the method comprising:
- detecting a basic service set (BSS) color collision with an overlapping BSS (OBSS);
- and
- transmitting, to the STA, a frame including BSS color disabled information and a Transmission Opportunity (TXOP) duration field value,
- wherein the BSS color disabled information indicates that the BSS color is disabled and the STA should not transit to a doze state based on the BSS color,
- wherein the TXOP duration field value is set to a second value, which is out of a first range of values in response to the BSS color disabled information indicating the BSS color is disabled,
- wherein the first range of values of the TXOP duration field value are for TXOP duration information, and
- wherein the second value of the TXOP duration field value is for indicating that the STA should not update both of an inter-BSS network allocation vector (NAV) maintained for an inter-BSS frame and an intra-BSS NAV maintained for an intra-BSS frame.
A station (STA) for reducing erroneous network allocation vector (NAV) updates in a wireless local area network (WLAN) system, the STA comprising:
- a transceiver configured to receive:
- basic service set (BSS) Color Disabled information indicating that a BSS color is disabled, and
- a frame including BSS color information and a Transmission Opportunity (TXOP) duration field value,
- wherein the TXOP duration field value of the frame is set to a second value which is out of a first range of values in response to the BSS color disabled information indicating the BSS color is disabled, and
- wherein the first range of values of the TXOP duration field are for TXOP duration information;
- and
- a processor connected to the transceiver,
- wherein the processor is configured to maintain an inter-BSS network allocation vector (NAV) for an inter-BSS frame and an intra-BSS NAV for an intra-BSS frame, and
- wherein the second value of the TXOP duration field value of the frame is for preventing the processor from updating both of the inter-BSS NAV and the intra-BSS NAV upon receiving the frame.
An access point (AP) for reducing erroneous network allocation vector (NAV) updates of a station (STA) in a wireless local area network (WLAN) system, the AP comprising:
- a transceiver configured to transmit, to the STA,
- basic service set (BSS) information indicating that a BSS color is disabled, and
- a frame including BSS color disabled information and a Transmission Opportunity (TXOP) duration field value;
- and
- a processor connected to the transceiver and configured to detect a BSS color collision with an overlapping BSS (OBSS), and to set the BSS color disabled information of the frame to a first value for indicating that the BSS color is disabled,
- wherein the BSS color disabled information set to the first value indicates that the STA should not transit to a doze state based on the BSS color,
- wherein the TXOP duration field value is set to a second value, which is out of a first range of values in response to the BSS color disabled information indicating the BSS color is disabled, and
- wherein the first range of values of the TXOP duration field value are for TXOP duration information, and
- wherein the second value of the TXOP duration field value is for indicating that the STA should not update both of an inter-BSS network allocation vector (NAV) maintained for an inter-BSS frame and an intra-BSS NAV maintained for an intra-BSS frame.
Dependencies are inferred from the claim text.