Communication method of terminals and access point for uplink MU-MIMO channel access

摘要

Provided is a communication method of an access point and a plurality of terminals that are capable of enhancing a throughput of an overall network in a random access environment by enabling the access point to wait for additional terminals to transmit data through uplink communication during a predetermined waiting window.

主权项

1. A communication method of an access point, the method comprising:
receiving a first request frame from a first terminal requesting an uplink communication; transmitting a first response frame to the first terminal indicating whether the first request frame is received and including information of a length of a predetermined waiting window; waiting for a second request frame to be received from a second terminal during the predetermined waiting window in response to transmitting the first response frame to the first terminal, the second request frame indicating a request for uplink communication from the second terminal; transmitting a second response frame including information about assigning a resource to at least one of the first terminal and the second terminal; permitting uplink communication of the first terminal and the second terminal in response to the second request frame being received from the second terminal; and permitting uplink communication of the first terminal and not permitting uplink communication of the second terminal in response to the second request frame not being received from the second terminal during the predetermined waiting window, wherein the second response frame includes information for synchronizing a transmission time of the first terminal and the second terminal through the uplink, information about an amount of data that is to be transmitted through the uplink, information about a size of a transmission that is to be transmitted through the uplink, or information about a power back-off of at least one of the first terminal and the second terminal.