Abstract
Proxy Mobile IPv6 has been developed from the concept of network-based mobility support protocol in the Internet Engineering Task Force. The recently published specification of Proxy Mobile IPv6 only focuses on the mobility support without a mobile host’s participation in the mobility signaling. Then, route optimization issues are left in the basket for further works. In this paper, we explore the existing route optimization proposals that are analyzed and matched against a list of functional and operational angles. Then, the chosen two route optimization proposals are evaluated in terms of signaling cost, packet delivery cost, total cost, and service blocking probability. Through the provided analysis results, we demonstrate that route optimization solves the ineffective routing path problem when the mobile host communicates with its corresponding host and argue that the scalability of Proxy Mobile IPv6 architecture is also improved due to the distributed routing path. In addition, the cost model developed in this paper would be a reference model in order to facilitate decision making for further route optimization design.










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Notes
The recently chartered Network-Based Mobility Extension (NETEXT) working group involves a development of RO for PMIPv6 as a working item. As indicated in [19], the standardization of RO would be submitted to the Internet Engineering Steering Group for publication as a proposed standard Request for Comments by April 2010.
The document entitled “Problem Statement and Requirements for Route Optimization in PMIPv6” was a joint effort of several contributors who were also authors for RO proposals.
In [9], the identifiers for MH and CH have not been considered in the CB update message. However, these identifiers should be contained in the message because the identifier is used to distinguish each node in PMIPv6 [5]. In addition, the identifier-based discernment is proper at multihoming scenarios.
In [23], we have proposed a paging extension and developed the paging cost model for PMIPv6.
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Acknowledgements
The authors are thankful to the anonymous reviewers for their valuable suggestions for improving this paper. Special thanks also goes to Sri Gundavelli for his invaluable thoughtfulness and input on a preliminary version of this paper [32].
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Lee, JH., Chung, TM. How much do we gain by introducing route optimization in Proxy Mobile IPv6 networks?. Ann. Telecommun. 65, 233–246 (2010). https://doi.org/10.1007/s12243-009-0127-9
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DOI: https://doi.org/10.1007/s12243-009-0127-9