Patent ID: 9655145
Date: 2017-05-16
CPC Classifications: H04B,H04W

Claim:
1. A wireless communication method of a terminal, comprising: receiving a radio signal of a specific channel; measuring a signal strength of the received radio signal; and determining whether the specific channel is busy based on the measured signal strength and BSS identifier information of the radio signal, wherein the determining is performed based on clear channel assessment (CCA) for the specific channel, and a CCA threshold used for the CCA is set by the terminal to different levels according to whether the BSS identifier information of the radio signal is the same as BSS identifier information of the terminal, wherein when the BSS identifier information of the radio signal is the same as BSS identifier information of the terminal, a first CCA threshold is used for the CCA, and when the BSS identifier information of the radio signal is different from BSS identifier information of the terminal, a second CCA threshold having a higher level than the first CCA threshold is used for the CCA, and wherein when the BSS identifier information of the radio signal is different from the BSS identifier information of the terminal and the signal strength of the received radio signal is below the second CCA threshold, the channel is determined to be idle.