Patent ID: 8599777
Filing Date: 2013-12-03
Classification: H04L

Abstract:
1. A method for providing multiple-user multiple-input and multiple-output in a high-speed packet access system, comprising: receiving a channel quality indicator from a dual-stream-capable wireless communication device requesting a single-stream transmission at a first data rate; adjusting the first data rate by an adaptive outer loop margin to obtain a second data rate; transmitting a data stream to the wireless communication device using the second data rate; receiving a positive-acknowledgement/negative-acknowledgement (ACK/NACK) from the wireless communication device; and adjusting the adaptive outer loop margin according to the received ACK/NACK, wherein the adaptive outer loop margin comprises a first adaptive outer loop margin for single-user multiple-input and multiple-output transmissions and a second adaptive outer loop margin for multiple-user multiple-input and multiple-output transmissions.