A multi-channel contention method performed by a STA in a basic service set, BSS, the BSS including the STA and an access point, AP,, the method comprising: • listening, by the STA, to at least two channels; • determining, by the STA, a first channel among the at least two channels succeeding in contention, and determining, by the STA, a second channel, among the at least two channels, considered to succeed in contention, wherein the determining, by the STA, the first channel succeeding in contention, and determining the second channel considered to succeed in contention comprises: • entering a waiting phase when the STA obtains by means of listening that any channel of the at least two channels is in an idle state, and if the any channel is still in an idle state after the waiting phase, determining that the any channel enters a backoff timing phase; and • determining a channel that is still in an idle state after a corresponding backoff timing phase ends as the first channel succeeding in contention, and determining another channel that is currently still in a corresponding backoff timing phase and that is in an idle state as the second channel considered to succeed in contention; • sending, by the STA, a first control frame to the AP by using the first channel and the second channel, to occupy the first and second channel; • receiving, by the STA, a second control frame from the AP, the second control frame being sent by the AP on a channel that receives the first control frame; • sending, by the STA, a third control frame to the AP by using a channel that receives the second control frame; and • receiving, by the STA, a further control frame from the AP, the further control frame being sent by the AP on a channel that receives the third control frame. • listening, by the STA, to at least two channels; • determining, by the STA, a first channel among the at least two channels succeeding in contention, and determining, by the STA, a second channel, among the at least two channels, considered to succeed in contention, wherein the determining, by the STA, the first channel succeeding in contention, and determining the second channel considered to succeed in contention comprises: • entering a waiting phase when the STA obtains by means of listening that any channel of the at least two channels is in an idle state, and if the any channel is still in an idle state after the waiting phase, determining that the any channel enters a backoff timing phase; and • determining a channel that is still in an idle state after a corresponding backoff timing phase ends as the first channel succeeding in contention, and determining another channel that is currently still in a corresponding backoff timing phase and that is in an idle state as the second channel considered to succeed in contention; • entering a waiting phase when the STA obtains by means of listening that any channel of the at least two channels is in an idle state, and if the any channel is still in an idle state after the waiting phase, determining that the any channel enters a backoff timing phase; and • determining a channel that is still in an idle state after a corresponding backoff timing phase ends as the first channel succeeding in contention, and determining another channel that is currently still in a corresponding backoff timing phase and that is in an idle state as the second channel considered to succeed in contention; • sending, by the STA, a first control frame to the AP by using the first channel and the second channel, to occupy the first and second channel; • receiving, by the STA, a second control frame from the AP, the second control frame being sent by the AP on a channel that receives the first control frame; • sending, by the STA, a third control frame to the AP by using a channel that receives the second control frame; and • receiving, by the STA, a further control frame from the AP, the further control frame being sent by the AP on a channel that receives the third control frame.