Abstract
AbstractSince the core functionality of cellular network mobility management is handover and handover latency directly impacts service continuity and the end-user experience, handover has the most stringent latency requirement on service interruption time compared to other mobility related operations such as reentry from Idle mode. This paper presents the state-of-the-art handover schemes designed for IEEE 802.16m based 4G mobile networks (next generation WiMAX), approved by ITU as an IMT-Advanced technology and handover performance of 4G mobile networks is evaluated in terms of latency. A system-architectural view on handover is provided to analyze the causes of handover latency and methods to optimize them for latency reduction. Through handover latency analysis an insight on how well 4G handover scheme is designed can be provided. KeywordsMobility managementPerformance evaluation4G mobile networksIMT-advanced
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