Method for adjusting aggregation size based on acknowledgment (ACK) bitmap

1. A method for adjusting aggregation size based on Acknowledgement (ACK) bitmap with a media access controller (MAC), which comprises

receiving k th Compressed Block Acknowledgement (CBA), wherein k th is sequence of receiving CBA;

calculating granularity factor (g) by applying Equation (1);

g = Agg max /Q avg *128   (1)

wherein, Agg max is a maximum aggregation, Q avg is an average queue size;

determining bit error density (BED k ) for k th CBA by applying Equation (2);

BED k =b z /b t   (2)

wherein, b z is a number of zero bits of the k th ACK, b t is a total number of used bits of the k th ACK;

receiving (k+1) th CBA;

determining bit error density (BED k+1 ) for (k+1) th CBA by applying Equation (2);

adjusting the aggregation size based on the value of granularity factor (g), k th bit error density BED k values and (k+1) th bit error density BED k+1 ;

wherein if the k th bit error density BED k is greater than the (k+1) th bit error density BED k+1 , then increasing the aggregation size based on the value of granularity factor (g);

wherein if the k th bit error density BED k is lower than the (k+1) th bit error density BED k+1 then decreasing the aggregation size based on the value of granularity factor (g);

wherein if the k th bit error density BED k is equal to the (k+1) th bit error density BED k+1 then the aggregation size is kept unchanged.

2. The method according to claim 1 , wherein the aggregation size should not exceed 64 Kbyte defined by the 802.11n standard.

3. The method according to claim 1 , wherein a minimum aggregation size is an average packet size in a queue.

4. The method according to claim 1 , wherein a stability threshold (D b ,D w ) is used to avoid false decision and fast fluctuation.