Vertical handover (VHO) techniques are applied when mobile users require service continuity and a seamless roaming between heterogeneous networks. A VHO decision can be taken on the basis of physical parameters, such as the received signal strength (RSS), data rate and signal-to-interference and noise ratio (SINR). In this paper, we compare three VHO decision criterions, each of them based on different physical metrics. A smart combination of several VHO criterions is the core of our proposed approach, which uses not only RSS or SINR parameters, but also a hybrid mixture from different wireless access networks. To improve quality of service for mobile users, a data rate gain parameter is introduced that lets an efficient VHO be executed. Simulation results of the proposed VHO approach are in terms of both end-users efficiency, i.e. cumulative received bits, and network performances, i.e. VHO frequency. © 2009 IEEE.
A combined vertical handover decision metric for QoS enhancement in next generation networks / Anna Maria, Vegni; TAMEA, Gabriele; Tiziano, Inzerilli; CUSANI, Roberto. - STAMPA. - (2009), pp. 233-238. (Intervento presentato al convegno 5th IEEE International Conference on Wireless and Mobile Computing Networking and Communication, WiMob 2009 tenutosi a Marrakech; Morocco nel 12 October 2009 through 14 October 2009) [10.1109/wimob.2009.47].
A combined vertical handover decision metric for QoS enhancement in next generation networks
TAMEA, Gabriele;CUSANI, Roberto
2009
Abstract
Vertical handover (VHO) techniques are applied when mobile users require service continuity and a seamless roaming between heterogeneous networks. A VHO decision can be taken on the basis of physical parameters, such as the received signal strength (RSS), data rate and signal-to-interference and noise ratio (SINR). In this paper, we compare three VHO decision criterions, each of them based on different physical metrics. A smart combination of several VHO criterions is the core of our proposed approach, which uses not only RSS or SINR parameters, but also a hybrid mixture from different wireless access networks. To improve quality of service for mobile users, a data rate gain parameter is introduced that lets an efficient VHO be executed. Simulation results of the proposed VHO approach are in terms of both end-users efficiency, i.e. cumulative received bits, and network performances, i.e. VHO frequency. © 2009 IEEE.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
