IEEE Communications Magazine
IEEE Communications Magazine
WiMAX femtocells: a perspective on network architecture, capacity, and coverage
IEEE Communications Magazine
Novel signaling scheme for lx CDMA-based femtocell networks
ICACT'10 Proceedings of the 12th international conference on Advanced communication technology
Handover in UMTS networks with hybrid access femtocells
ICACT'10 Proceedings of the 12th international conference on Advanced communication technology
Interference mitigation by practical transmit beamforming methods in closed femtocells
EURASIP Journal on Wireless Communications and Networking - Special issue on femtocell networks
Enhancing macrocell downlink performance through femtocell user cooperation
WASA'11 Proceedings of the 6th international conference on Wireless algorithms, systems, and applications
Cognitive Femtocell: A Cost-Effective Approach Towards 4G Autonomous Infrastructure Networks
Wireless Personal Communications: An International Journal
Power Allocation Schemes in OFDM-Based Femtocell Networks
Wireless Personal Communications: An International Journal
Cell ID extension in femtocell environments
Computer Networks: The International Journal of Computer and Telecommunications Networking
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The femtocell networks that use home base station and existing xDSL or other cable line as backhaul connectivity can fulfill the upcoming demand of high data rate for wireless communication system as well as can extend the coverage area. Hence the modified handover procedure for existing networks is needed to support the macrocell/femtocell integrated network. Some modifications of existing network and protocol architecture for the integration of femtocell networks with the existing UMTS based macrocell networks are essential. These modifications change the signal flow for handover procedures due to different 2-tier cell (macrocell and femtocell) environment. The measurement of signal-to-interference ratio parameter should be considered for handover between macrocell and femtocell. A frequent and unnecessary handover is another problem for hierarchical network environment that must be optimized to improve the performance of macrocell/femtocell integrated network. In this paper, firstly we propose the concentrator based and without concentrator based femtocell network architecture. Then we present the signal flow with appropriate parameters for the handover between 3GPP UMTS based macrocell and femtocell networks. A scheme for unnecessary handoff minimization is also presented in this paper. We simulate the proposed handover optimization scheme to validate the performance.