Performance Evaluation of Voice over WiFi (VoWiFi) Using IP Multimedia Subsystem (IMS).

Poor coverage is a leading cause of to use VoWiFi calling to enhance coverage. With Wi-Fi Calling, Mobile network operators has a significant reduction in churn. So that we are keen to invest greatly in VoWiFi. VoWiFi means that we use radio waves in wireless networks to exchange voice instead of using wired networks, it Enables VoLTE subscribers to access EPC network using WiFi register with IMS network so that they can use IMS services such as voice call, SMS and other supplementary services and Subscribers can use WiFi to access EPC network when LTE is unavailable. [ABSTRACT FROM AUTHOR]

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