Channel use time of the notification method of transmitting uplink data, an uplink data transmission method and apparatus

Embodiment of the present invention provides a method of transmitting a notification time using the uplink data channel, an uplink data transmission method and apparatus. A method comprising: an access point to the terminal device sends a first message indication, a first indication message instructs the terminal is allowed to access a current channel; or the first indication message instructs the terminal in the downlink data access point device; or the an indication message instructs the terminal is allowed to send uplink data; a second access point device indication message sent by a terminal according to a first indication message; second indication message instructs the terminal to send uplink data; receiving the access point device after the second indication message, the third indication message to the terminal, the third indication message carries channel use time information; channel use time information indicating a terminal transmitting uplink data channel use time. Improving the uplink data allocated by the network transmission time of utilization.