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What are Block Acknowledgements?

April 26, 2017Acknowledgements block

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What are Block Acknowledgements?

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A Normally, every 802.11 packet sent must be acknowledged by the receiver. The time needed to send and receive each acknowledgement (ACK) can be very time consuming. The 802.11n standard provides for a mode called “Block ACK” whereby a number of packets can be transmitted one right after the other (increasing efficiency) and a single ACK is then returned that lists which packets were good and which packets will need to be resent.