The disclosed subject matter includes techniques for wireless communication. In one example, a system includes a processor and a computer-readable memory storage device for storing executable instructions that can be executed by the processor to cause the processor to send a data frame to a client device. The processor can also receive a data-acknowledgment frame from the client device in response to the data frame within a predetermined time after sending the data frame. The processor can also aggregate a response data-acknowledgment frame in response to receiving the data-acknowledgment frame with at least one data frame to form an aggregated frame. The processor can also further send the aggregated frame to the client device and the at least one other client device within the predetermined time after receiving the data-acknowledgement frame.