| CPC H04W 72/04 (2013.01) [H04W 28/02 (2013.01); H04W 72/0453 (2013.01); H04W 74/0808 (2013.01); H04W 74/085 (2013.01); H04W 74/0858 (2013.01); H04W 74/0816 (2013.01)] | 13 Claims |

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1. A wireless communication terminal for accessing a plurality of contention-based channels, the terminal comprising:
a processor, and
a memory coupled with the processor,
wherein the processor is configured to:
perform backoff procedure for a plurality of channels,
wherein each of a plurality of backoff counters individually corresponding to a respective channel of the plurality of channels is determined within a contention window, and
wherein an initial value of each of the plurality of backoff counters is set based on a common backoff counter used by the wireless communication terminal for multi-channel access, and
perform multi-channel transmission through the plurality of channels based on the backoff procedure using the plurality of backoff counters,
wherein the multi-channel transmission is performed through the plurality of channels when the plurality of backoff counters are ‘0’, and
wherein a size of the contention window is adjusted depending on whether the multi-channel transmission is successful.
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