Device and method for switching channel
AssigneeFrontside
InventorJeong Soo LEE
Life of this patent
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Abstract
A method for switching a channel in a wireless local area network is provided. A station which is a member of a basic service set (BSS) receives information on a non-primary channel access (NPCA) primary channel within a BSS bandwidth of the BSS from an associated access point (AP). The station receives an inter-BSS physical layer protocol data unit (PPDU) on a BSS primary channel and switches from the BSS primary channel to the NPCA primary channel for an NPCA operation if (i) channels occupied by the inter-BSS PPDU does not overlap with the NPCA primary channel, and (ii) the station maintains an intra-BSS network allocation vector (NAV) counter with a zero value.
Claims6
A method for switching a channel in a wireless local area network, the method performed by a station which is a member of a basic service set (BSS) and comprising:
- receiving information on a non-primary channel access (NPCA) primary channel within a BSS bandwidth of the BSS from an associated access point (AP) which corresponds to the BSS;
- receiving an inter-BSS physical layer protocol data unit (PPDU) on a BSS primary channel, the BSS primary channel being a common channel of operation for all stations that are members of the BSS, the inter-BSS PPDU being transmitted by at least one inter-BSS station which is not a member of the BSS or an AP which does not correspond to the BSS;
- and
- switching from the BSS primary channel to the NPCA primary channel for an NPCA operation if all of following conditions (i) and (ii) are met:
- (i) channels occupied by the inter-BSS PPDU does not overlap with the NPCA primary channel;
- and
- (ii) the station maintains an intra-BSS network allocation vector (NAV) counter with a zero value, the intra-BSS NAV counter being updated by an intra-BSS PPDU, the intra-BSS PPDU being transmitted by at least one intra-BSS station which is a member of the BSS or the associated AP.
A device for a wireless local area network, the device which is a member of a basic service set (BSS) and comprising:
- a processor;
- and
- a memory operatively coupled with the processor and configured to store instructions that, when executed by the processor, cause the device to perform functions comprising:
- receiving information on a non-primary channel access (NPCA) primary channel within a BSS bandwidth of the BSS from an associated access point (AP) which corresponds to the BSS;
- receiving an inter-BSS physical layer protocol data unit (PPDU) on a BSS primary channel, the BSS primary channel being a common channel of operation for all stations that are members of the BSS, the inter-BSS PPDU being transmitted by at least one inter-BSS station which is not a member of the BSS or an AP which does not correspond to the BSS;
- and
- switching from the BSS primary channel to the NPCA primary channel for an NPCA operation if all of following conditions (i) and (ii) are met:
- (i) channels occupied by the inter-BSS PPDU does not overlap with the NPCA primary channel;
- and
- (ii) the device maintains an intra-BSS network allocation vector (NAV) counter with a zero value, the intra-BSS NAV counter being updated by an intra-BSS PPDU, the intra-BSS PPDU being transmitted by at least one intra-BSS station which is a member of the BSS or the associated AP.
Dependencies are inferred from the claim text.