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The rapid progress being made in mobile device technologies that enable consumers can enjoy Internet based multimedia/business services in travel will rely on IP mobility management protocols for enabling mobile services. The performance of mobility management protocols will largely effect on consumersÂ¿ experiences. In this paper, an analytical cost model is developed for evaluating the performance of the existing IP mobility management protocols including the recently developed Proxy Mobile IPv6 (PMIPv6); they are analyzed and compared in terms of signaling cost, packet delivery cost, tunneling cost, and total cost. The conducted results identify each mobility management protocolÂ¿s strengths and weaknesses that could be used to facilitate decision-making for consumer network design. In addition, suggestions for developing further PMIPv6 improvements are provided.