Handover Management in NGNAbstract—Demands from network users for better, faster and more secure services are constantly increasing. The field of mobile networks is the most dynamic in the networking world. Handoff management in next-generation networking has been a topic of interest to many researchers in the modern era. Handoff plays a vital role in NGN by providing connectivity without losing connection from one network to another. Different algorithms and techniques are used for continuous transfer and to optimize transfer delay and data loss. Contemporary literature reveals that next-generation mobile networks consist of heterogeneous wireless networks, e.g., WLAN, 3G, and CDMA, etc. After transferring from one network to another, MH makes use of the resources of the visited network. During the handoff MH must support the different radio access technologies. In this paper, different areas of handoff management are explored with emphasis on different algorithms, techniques, handoff protocols and some proposed models. This summary bibliographic work serves as a learning guide for academia in the area of ​​networks. Keywords: MH (Mobile Host, FA (Foreign Agent), GA (Gateway Agent), VHO (Vertical Handoff), CAC (Call Admission Control). I. INTRODUCTION To avoid call termination and data loss during mobility handover mechanism is used The process of severing connection with a base station and gaining connectivity to another base station is called call transfer from one in American English channel to another is known as Handoff and in British English it is known as Handover. If the cell size is small, more handoff will occur. Such a system requires more resources to support and coordinate.... and Rosli Salleh, “Handoff Techniques for 4G Wireless Mobile Internet,” July 29, 2007.[6] Blazej Lewcio, Sebastian Moller, Marcel Waltermann, Niklas Kirschnick, and Pablo Vidales, “Methods for Adaptation of Multimedia Services in Next Generation Networks”[7] Michael Mackay, Jose Moura, and Christopher Edwards, “Handoff flexible host-based networks for next-generation networks,” April 13, 2008.[8] Ashutosh Dutta, Sbir Das, David Famolari, and Henning Schulzrinner, “Seamless Handover across Heterogeneous Networks- An IEEE 802.21 Centric Approach,” November 4, 2008.[9 ] Carolin Latze and Ulrich Ulte-nitsche, “Roaming, Accounting and Seamless Handover in EAP-TLS Authenticated Networks,” September 25, 2008.[10] Pyung-Soo Kim and Young Jin Kim, “Herarchical Mobile IPv6 Based Fast Vertical Handover using IEEE 802.21 Media Independent Handover Function,” January 14 2008.