Dynamic A-MSDU enabling
A dynamic A-MSDU enabling method is disclosed. The method enables the recipient of an aggregate MAC service data unit (A-MSDU) under a block ACK agreement to reject the A-MSDU. The method thus distinguishes between A-MSDU outside of the block ACK agreement, which is mandatory, from A-MSDU under the block ACK agreement, which is optional. The method thus complies with the 802.11n specification while enabling the recipient to intelligently allocate memory during block ACK operations.
1. A station (STA) comprising:
a buffer;
a receiver to receive a request that indicates an intent by another station to transmit a number of aggregate medium access controller (MAC) service data units (A-MSDUs) under block acknowledge (ACK) agreements; and
a transmitter to transmit a response frame in response to the request, the response frame to indicate whether or not the station intends to receive the A-MSDUs under block ACK agreements and to indicate that a size of the A-MSDUs to be received under block ACK agreements is supported by the buffer,
wherein when the station indicates its intention to receive the A-MSDUs under block ACK agreements:
the receiver is configured to receive the number of A-MSDUs within a MAC protocol data unit (MPDU) under the block ACK agreements after transmission of the response frame; and
the receiver is configured to receive one A-MSDU per block ACK agreement, and
wherein under the block ACK agreements, the station agrees to confirm that it has received a block of frames comprising the MPDU in response to a block ACK request (BAR) from the other station.
2. The STA of claim 1 , wherein each A-MSDU comprises a number of MSDUs.
3. The STA of claim 1 , wherein the receiver is further configured to receive a second A-MSDU according to a second block ACK agreement.
4. The STA of claim 1 , wherein the response frame is an add block acknowledge (ADDBA) response frame in accordance with the block ACK agreements, and
wherein the request is an ADDBA request frame in accordance with the block ACK agreements.
5. The STA of claim 1 , wherein allocation of the buffer is established under the block ACK agreements.
6. The STA of claim 1 , wherein allocation in the buffer is established by a size of the A-MSDUs under the block ACK agreements.