SCOTTSDALE, AZ--(Marketwire - July 21, 2010) - Although unit shipments in 1Q10 for the Worldwide WLAN market decreased by 9.4% quarter-over-quarter, it increased by 4.8% year-over-year. That increase was fueled primarily by migration to 802.11n technology. Shipments of 802.11n devices grew 85% in Q1 2010 compared to Q1 2009.