A kind of method and system of wireless site access channel

The invention discloses a kind of method and system of wireless site access channel, methods described includes：When wireless site selection is refused or abandoned radio frames and do not update the NAV being locally stored, the finish time of the radio frame transmission is obtained；When the radio frame transmission terminates and meets the condition pre-set, channel access can be carried out.The present invention is by when wireless site there may be and collide problem, by the way that after radio frame transmission terminates, when judgement is met the condition pre-set, channel access can be carried out, wireless site is avoided in radio frame transmission, the problem of transmission is collided occurs with hiding website.