Wireless communication method using frame aggregation and wireless communication terminal using same
A method for constructing an aggregated frame for efficient wireless communication in a high-density environment and a wireless communication method using the same is provided. The wireless communication method may include: generating an aggregated MPDU (A-MPDU) including a plurality of MAC protocol data unit (MPDU) groups to which independent modulation and coding schemes (MCSs) are applied, respectively; and transmitting the generated A-MPDU through the transceiver and a wireless communication terminal may use the same.
1. A wireless communication terminal comprising:
a transceiver; and
a processor,
wherein the processor is configured to:
transmit an aggregate MAC protocol data unit (A-MPDU) including one or more MAC service data units (MSDUs) or aggregate MSDUs (A-MSDUs), and
receive a block ACK for acknowledgment (ACK) transmission in response to one or more MSDUs or A-MSDUs,
wherein the block ACK includes one or more bitmap sets and a single block ACK control field,
wherein each of the one or more bitmap sets includes a starting sequence control field and a block ACK bitmap field according to a type of the block ACK indicated by the single block ACK control field,
wherein the block ACK bitmap field included in the each of the one or more bitmap sets indicates success or failure of reception of each of the one or more MPDUs or A-MPDU,
wherein a length of the block ACK bitmap field is variable according to the type of the block ACK,
wherein the block ACK control field indicates the type of the block ACK and a set of lengths of each of the block ACK bitmap field included in the one or more bitmap sets according to the type of the block ACK,
wherein the length of the block ACK bitmap field is determined as one of the lengths included in the set of the block ACK control field, and
wherein a number of MSDUs or A-MSDUs capable of transmitting an ACK is determined according to the length of the block ACK bitmap field.
2. The terminal of claim 1 ,
wherein the length of the block ACK bitmap field is indicated by a predetermined field of the block ACK.
3. The terminal of claim 1 ,
wherein the lengths correspond to multiples of M bytes according to the type of the block ACK indicated by the single block ACK control field.
4. The terminal of claim 1 ,
wherein the length of each block ACK bitmap field of the each of the one or more bitmap sets is independently determined as one of the lengths included in the set of the block ACK control field.
5. The terminal of claim 1 ,
wherein each bit of the block ACK bitmap field represents success or failure of reception of the one or more MPDUs or A-MSDUs starting from a first MPDU or a first MSDU indicated by a starting sequence control field of the block ACK.
6. A wireless communication method of a terminal comprising:
transmitting an aggregate MAC protocol data unit (A-MPDU) including one or more MAC service data units (MSDUs) or aggregate MSDUs (A-MSDUs), and
receiving a block ACK for acknowledgment (ACK) transmission in response to one or more MSDUs or A-MSDUs,
wherein the block ACK includes one or more bitmap sets and a single block ACK control field,
wherein each of the one or more bitmap sets includes a starting sequence control field and a block ACK bitmap field according to a type of the block ACK indicated by the single block ACK control field,
wherein the block ACK bitmap field included in the each of the one or more bitmap sets indicates success or failure of reception of each of the one or more MPDUs or A-MPDU,
wherein a length of the block ACK bitmap field is variable according to the type of the block ACK,
wherein the block ACK control field indicates the type of the block ACK and a set of lengths of each of the block ACK bitmap field included in the one or more bitmap sets according to the type of the block ACK,
wherein the length of the block ACK bitmap field is determined as one of the lengths included in the set of the block ACK control field, and
wherein a number of MSDUs or A-MSDUs capable of transmitting an ACK is determined according to the length of the block ACK bitmap field.
7. The terminal of claim 6 ,
wherein the length of the block ACK bitmap field is indicated by a predetermined field of the block ACK.
8. The terminal of claim 6 ,
wherein the lengths correspond to multiples of M bytes according to the type of the block ACK indicated by the single block ACK control field.
9. The terminal of claim 6 ,
wherein the length of each block ACK bitmap field of the each of the one or more bitmap sets is independently determined as one of the lengths included in the set of the block ACK control field.
10. The terminal of claim 6 ,
wherein each bit of the block ACK bitmap field represents success or failure of reception of the one or more MPDUs or A-MSDUs starting from a first MPDU or a first MSDU indicated by a starting sequence control field of the block ACK.