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Enhancing Seamless Mobility in Heterogeneous Networks

This article discusses the importance of access-independent user identifiers for seamless mobility between different access technologies within the same administrative domain. It explores the challenges of re-authentication and authorization during movement between access points and proposes solutions to avoid redundant processes. The concept of using one identifier for all current and future L2 connections is also examined, highlighting the complexities of such a mandate in heterogeneous network scenarios.

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Enhancing Seamless Mobility in Heterogeneous Networks

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  1. Current cellular networks use access dependant user identifiers Movement between two different access technologieswithin the same administrative domain implies re-authentication and authorisation Seamless mobility requires avoiding re-authentication/authorisation at the new AR. An access independent user identifier will allow the transfer of user credentials to the new AR regardless of the type of access technology used. The alternative to the above is to ‘mandate ’ one identifier to be used for all current and future L2 ’s. A possible but difficult target to achieve. Heterogenous networks scenarios

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