Nowadays wireless lans are not real-time EEE802.11 0.8 packet loss rate in an industrial 0.6 environment正 TWilligo2 04 0.2 100 120 140 160 180 Trace ID( 87sec/trace)Nowadays wireless LANs are NOT real-time. IEEE 802.11 packet loss rate in an industrial environment [Willig02] Trace ID (87sec/trace)