Wireless communication method for simultaneous data transmission, and wireless communication terminal using same
The present invention relates to a wireless communication method for simultaneous data transmission and a wireless communication terminal using the same, and more particularly, a wireless communication method in which a plurality of terminals simultaneously transmit data for improving a data throughput in a high density environment, and a wireless communication terminal using the same. To this end, the present invention provides a wireless communication method for a terminal including transmitting a trigger frame indicating simultaneous uplink data transmission of multi-users, receiving uplink data transmitted by a plurality of terminals in response to the trigger frame, and transmitting a block acknowledgement for the plurality of terminals having transmitted the uplink data, and a wireless communication terminal using the same.
1. A wireless communication method of a wireless communication terminal, the method comprising:
receiving, from an access point, a trigger frame indicating uplink transmission of one or more users, wherein the trigger frame allocates at least one of a dedicated access slot or a random access slot; and
performing uplink transmission to the access point in response to the trigger frame;
wherein the performing uplink transmission further comprises:
when the terminal is designated to the dedicated access slot, performing the uplink transmission through the dedicated access slot without a contention, and
when the terminal is not designated to the dedicated access slot, performing the uplink transmission through the random access slot with a contention.
2. The wireless communication method of claim 1 , wherein when the trigger frame allocates a random access slot, an association identifier (AID) field corresponding to the random access slot is set to a preset value other than values of a predetermined range for AID assignment of each terminal.
3. The wireless communication method of claim 2 , wherein the values of the predetermined range are values in a range of 1 to 2007.
4. The wireless communication method of claim 1 , wherein when the trigger frame allocates a plurality of random access slots, the uplink transmission is performed through a particular random access slot selected by the terminal among the plurality of random access slots.
5. The wireless communication method of claim 1 , wherein when the trigger frame allocates one or more dedicated access slots and one or more random access slots, a dedicated access slot group consisting of the one or more dedicated access slots and a random access slot group consisting of the one or more random access slots are classified into different channel or subchannel groups.
6. The wireless communication method of claim 5 , wherein at least one of information on the number of the one or more dedicated access slots and information on the number of the one or more random access slots are indicated by the trigger frame.
7. The wireless communication method of claim 1 , wherein the uplink transmission is performed at a predetermined time in response to the reception of the trigger frame.
8. A wireless communication terminal comprising:
a transceiver; and
a processor,
wherein the processor is configured to:
receive, from an access point, a trigger frame indicating uplink transmission of one or more users, wherein the trigger frame allocates at least one of a dedicated access slot or a random access slot, and
perform uplink transmission to the access point in response to the trigger frame,
wherein when the terminal is designated to the dedicated access slot, the processor performs the uplink transmission through the dedicated access slot without a contention, and
wherein when the terminal is not designated to the dedicated access slot, the processor performs the uplink transmission through the random access slot with a contention.
9. The wireless communication terminal of claim 8 , wherein when the trigger frame allocates a random access slot, an association identifier (AID) field corresponding to the random access slot is set to a preset value other than values of a predetermined range for AID assignment of each terminal.
10. The wireless communication terminal of claim 9 , wherein the values of the predetermined range are values in a range of 1 to 2007.
11. The wireless communication terminal of claim 8 , wherein when the trigger frame allocates a plurality of random access slots, the uplink transmission is performed through a particular random access slot selected by the terminal among the plurality of random access slots.
12. The wireless communication terminal of claim 8 , wherein when the trigger frame allocates one or more dedicated access slots and one or more random access slots, a dedicated access slot group consisting of the one or more dedicated access slots and a random access slot group consisting of the one or more random access slots are classified into different channel or subchannel groups.
13. The wireless communication terminal of claim 12 , wherein at least one of information on the number of the one or more dedicated access slots and information on the number of the one or more random access slots are indicated by the trigger frame.
14. The wireless communication terminal of claim 8 , wherein the processor performs the uplink transmission at a predetermined time in response to the reception of the trigger frame.