AlexSSS
2012-04-15, 05:01 PM
Handover between Macrocell and Femtocell for
UMTS based Networks
Abstract 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.
UMTS based Networks
Abstract 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.