US 7,515,538 B2
Probabilistic estimation of achievable maximum throughput from wireless interface
Alain F. Gefflaut, Herzogenrath (Germany); and Petri Mähönen, Aachen (Germany)
Assigned to Microsoft Corporation, Redmond, Wash. (US)
Filed on Oct. 13, 2005, as Appl. No. 11/249,583.
Prior Publication US 2007/0086353 A1, Apr. 19, 2007
Int. Cl. H04B 7/00 (2006.01); H04Q 7/28 (2006.01)
U.S. Cl. 370—232  [370/338] 19 Claims
OG exemplary drawing
 
1. A method of determining the estimated achievable bit rate between a wireless terminal and one or more access points, comprising:
statistically estimating an achievable bit rate between said wireless terminal and each access point to be checked for the estimated achievable bit rate based on a signal-to-noise (SNR) and/or signal-to-interference-noise (SINR) value of a signal received from each said access point, wherein the achievable bit rate is estimated by said wireless terminal prior to building a connection between the wireless terminal and each access point; and
applying a correction factor to the statistically estimated achievable bit rate based on historical memory of previous achievable bit rate estimations and an accuracy of said previous achievable bit rate estimations during one or more previous connections of said wireless terminal to each said access point wherein the accuracy is determined based on a comparison of each of the previous achievable bit rate estimations and a corresponding previous actually achieved bit rate.