Figure 8From: QoS-aware fuzzy rule-based vertical handoff decision algorithm incorporating a new evaluation model for wireless heterogeneous networks Non-birth–death Markov chain with state 0 = {no network}; state 1 = {UMTS}; state 2 = {GPRS}; state 3 = {WLAN}; state 4 = {UMTS,GPRS}; state 5 = {GPRS,WLAN}; state 6 = {UMTS,WLAN}; state 7 = {UMTS,GPRS,WLAN}. Back to article page