Method and system for dual-mode rate control in a wireless communication system

摘要

A method of performing dual-mode rate control for an access point in a wireless communication system includes a single-user mode of operation and a multi-user mode of operation. In the single-user mode, a basic rate for a station is determined based on channel conditions. In the multi-user mode, a rate for a plurality of stations is determined using tracking. The tracking includes performing a sounding for the plurality of stations. An initial multi-user current rate is then set equal to a function of a number of users and the basic rate. A transmission is sent to the plurality of stations using the current rate. A packet error rate (PER) is detected during transmission to the plurality of stations. The current rate is adjusted based on the PER. After rate adjustment, either sounding is triggered or the method returns to sending a transmission using the current rate.

主权项

1. A method for performing dual-mode rate control for an access point in a wireless communication system, the method comprising:
in a single-user mode (SU-mode), determining an SU-basic rate for a station in the wireless communication system based on channel conditions; and in a multi-user mode (MU-mode), determining an adjusted MU-rate using tracking for a plurality of stations, the tracking further comprising:
performing an initial sounding for each of the plurality of stations;initializing an MU-rate;sending a transmission to the plurality of stations using the MU-rate;detecting a packet error rate (PER) corresponding to the transmission to the plurality of stations;adjusting the MU-rate based on the PER;performing an in-loop sounding when triggered; andre-adjusting the MU-rate following the in-loop sounding.