Handover between macrocell and femtocell for UMTS based networks
ICACT'09 Proceedings of the 11th international conference on Advanced Communication Technology - Volume 1
IEEE Communications Magazine
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Femtocell networks can support iosolated coverage area and provide high data rates for mobile users by using wired Internet lines such as xDSL and cable TV networks for backhaul connectivity. Femtocell networks can be classified into 3GPP UMTS-based networks and Ix CDMA-based networks. Although 3GPP UMTS-based femtocells are standardized in the form of Home Node-B, Ix CDMA-based femtocells are not currently standardized. So, operators and communication system vendors are developing and launching such networks with proprietary specifications. From the viewpoint of an operator seeking to reduce its setup-costs, the adoption of the Femto Access GateWay (FAGW) is preferred. If femtocell networks based on the FAGW are adopted, an efficient signaling between the femtocells and the FAGW is required. The SIP-based signaling technique may suffer from an overload to support large number of femtocells. In this paper, we propose a novel signaling mechanism for FAGW and evaluate its performance in comparison with the SIP-based signaling method.