CPC H04B 7/0452 (2013.01) [H04B 7/028 (2013.01); H04L 5/0023 (2013.01); H04L 5/0048 (2013.01); H04L 27/2602 (2013.01); H04L 27/2603 (2021.01)] | 10 Claims |
1. A wireless communication terminal, the terminal comprising:
a communication unit; and
a processor configured to process signals transmitted and received through the communication unit,
wherein the processor is configured to:
receive wireless signal,
identify whether a channel status of a bandwidth for a physical layer protocol data unit, PPDU, is idle or busy based on the received wireless signal,
wherein the channel status of the bandwidth is individually identified for each of a plurality of channels constituting the bandwidth,
wherein the plurality of the channels includes a primary channel and at least one sub-channel,
wherein the channel status of each of the plurality of channels is transmitted from a physical, PHY, layer to a medium access control, MAC, layer through PHY-clear channel assessment (CCA).indication including a bitmap comprising at least one bit indicating the channel status for the at least one sub-channel, and
wherein the PHY-CCA.indication including the bitmap is transmitted from the PHY layer to the MAC layer when the channel state of the primary channel is idle.
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