Systems, methods, and devices for communicating data in a wireless communications network are described herein. In some aspects, a first wireless device may request to transmit data during a transmission opportunity of a second wireless device. The request may also indicate a duration of time for which permission to transmit is requested. In some aspects, the second wireless device may send a response message to the first wireless device indicating the first wireless device has been granted permission to transmit during a transmission opportunity of the second wireless device. The response may include an indication of a period of time for which permission to transmit has been granted. In an embodiment, the response may include an indication of a period of time the first wireless device may delay or sleep before an opportunity to transmit during a transmission opportunity of the second wireless device will be available.