Methods, devices, and systems for full-duplex transmission are provided. In one aspect, a method can include: sending, by a first node, access request information to a second node in a first access timeslot, receiving, by the first node, full-duplex feedback information sent by the second node, receiving, by the first node, a target identifier sent by the second node, the full-duplex feedback information indicating that the first access timeslot is in a successful state, and determining, by the first node, a target queue location of the first node associated with a conflict resolution queue in response to at least one of: determining that the target identifier is different from an identifier of the first node, or determining that the full-duplex feedback information indicates that the first access timeslot is in an idle state.