As wireless services become more pervasive and location aware, the need to locate and track mobile stations accurately and efficiently becomes increasingly important. A key technical challenge for modern wireless networks is to provide seamless access and qualityofservice (QoS) guarantees for mobile users. QoS provisioning can only be achieved by means of efficient mobility management to handle the frequent handoffs and rerouting of traffic that are experienced by a typical mobile station. This review paper describes the various mobility tracking methods for improving qualityofservice.
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