Patent ID: 8891548

Claim:
A method for data transmissions in a wireless network, the method comprising: a first device obtaining a first transmit opportunity (TxOP) via a contention-based channel access procedure; the first device transmitting a first frame to a second device using the first TxOP, wherein the first frame includes information regarding a number of pending data frames (NPD) to be transmitted from the first device to the second device; the first device receiving an acknowledgement frame in response to the first frame, wherein the acknowledgement frame ends the first TxOP and includes information regarding a number of approved data frames (NAD) for transmission from the first device to the second device; and the first device sending a plurality of data frames without performing the contention-based channel access procedure for obtaining a second TxOP in response to the acknowledgement frame; the first device receiving an acknowledgement for each data frame transmitted to the second device, wherein each data frame includes an updated NPD, and each acknowledgement includes an updated NAD and a clear-to-send (CTS) bit for channel reservation.