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Analysis of Handover over WLAN for VoIP

The growing use of smartphones has allowed users to handle multiple networks in a small equipment, but in VoIP services with QoS, the mobility is limited to the cell network operator although a WiFi service could offer that kind of service. The Handover process means real mobility for users on wireless LAN networks in an automatic method for association within a correlated wireless system. This paper shows a brief overview on handover proposed schemes and gives a description about QoS required for VoIP with the schemes that reduce the effect caused by the handover process in WLAN.