Patent ID: 7515910

Claim:
In a wireless communication device, a method for deciding when to handover a communication device from a wireless communication network to a wireless local area network (WLAN) in real-time, the method comprising: measuring samples of WLAN channel quality to generate a plurality of first channel quality measurements; estimating channel quality of the WLAN for each sample based on the plurality of first channel quality measurements to generate a plurality of first channel quality estimates; storing the first channel quality estimates prior to a first time instant; measuring a second sample of WLAN channel quality at the first time instant to generate a second channel quality measurement; defining a virtual window at the first time instant, wherein the virtual window is defined based on variables comprising a number of samples, the second channel quality measurement, and the plurality of first channel quality estimates; and using the virtual window to estimate channel quality of the WLAN at the first time instant based on the second channel quality measurement and the plurality of first channel quality estimates to generate a second channel quality estimate.