operators to comply with all regulatory requirements in
their respective countries.
fundamental requirement for any mobile service. However,
femtocells present a very unique set of challenges, as
operators' existing networks were never designed to
support the deployment of many hundreds of thousands
of femtocells. As a result, a RAN Gateway device-to-core
network connectivity solution must overcome a number
of practical limitations in mobile networks, such as the
provisioning limit of 64,000 Location Areas that exist in
today's mobile networks.
large-scale femtocell deployments. However, scalability
has many dimensions: Is the address space large enough
in specific data elements to meet the deployment
requirements? Does the signaling burden of the protocol
overwhelm the core network with hundreds of thousands
abstracting the access network from the core network? Can
network elements grow regionally as traffic increases? How
effective is the system at load balancing and redundancy?
standard, as well as existing UMA infrastructure solutions,
have already delivered robust and practical techniques for
addressing these challenges that are in commercial use
today and can be directly applied to support femtocell
deployments.
TeCTion
over alternative RAN Gateway device-to-core network
connectivity interface proposals: investment protection.
capable of offering a number of additional fixed-mobile
convergence (FMC) services, including 2G femtocell
services, 2G and 3G dual-mode handset services, fixed
VoIP services, and softmobile services (Figure 6).