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The fifth-generation (5G) ultra-dense networks (UDNs) using dynamic beamforming have drawn massive attention due to their ability to increase spectral and energy efficiency. This paper explores the handoff management process for 5G UDNs with dynamic beamforming. The handoff management between any two base stations is implemented through the beam scanning mechanism based on angle of arrival and angle of departure, allowing base stations to switch seamlessly from one antenna beam to another. Utilizing the beamforming technology allows the base station to track the user location, as well as the user devices' movements during handoff, thus providing a better user experience. The proposed handoff management for 5G UDNs with dynamic beamforming reduces handoff latency significantly, leading to an increase in efficiency. Besides, the proposed system also increases the service availability and supports connections between the base station and user through narrow beams, enabling more users to use the service at the same time. The conclusion presented in this paper is that the proposed handoff management in 5G UDNs with dynamic beamforming is an effective solution to various technical challenges associated with handoff management in wireless networks. [ABSTRACT FROM AUTHOR]