User-centric Communication Technology for Guaranteed QoE in Heterogeneous Networks This paper proposes a framework for the user-cetric communication. First, we introduce the concept of usercentric communication and present the network structure and the protocol stacks of the end user device. We design a new protocol stack called Service Continuity Management (SCM). SCM has four functional blocks which is located between the application layer and the transport layer. SCM monitors the service Quality of Experience (QoE) and makes the multiple sessions for a one service using multiple radio adaptors in order to maintain QoE requirements. According to the performance analysis, the user-centric communication shorten the handover delay in heterogeneous networks and we can use achieve the cost and power effective wireless communication using the user-centric communication. Keywords: User-centric communication, Multi-homing I
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T LTE HO (L control pk size L data pk size )C LTE W LTE T timeout T scan T Link setup T session setup (L control pk size L data pk size )C WiFi W WiFi T PMIP HO (L control pk size L data pk size )(β C LTE (1β)C WiFi ) β : Portion of LTE usage β W LTE (1β )W WiFi T service path change (L control pk size (T service move D service rate ))C LTE (L data pk size (T service move D service rate ))C WiFi, T service move T scan T Link setup T session change αw LTE (1α)(W WiFi W LTE Sleep ), α: Portion of control packets W LTE,W LTEsleep [13] W WiFi [14] C LTE [15] C WiFi T LTE HO [16] T PMIP HO [17] T timeout T scan [20] T Link setup [18],[21] T session setup [18],[22] T service path change [18],[19],[22] T session change [10][13][14]
(T timeout ) (T scan ) (T Link setup ) (T session setup ) (T PMIP HO ) C LTE, C WiFi
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