unreliable and unsecured public internet. As
a result, defining the "Iu over IP" interface is
significantly more complex than solely defining
a method to transport Iu traffic out from the
core over an IP network. For example, key
areas that need to be defined and standardized
include IP security, discovery and registration,
authentication, authorization, roaming and
handover, link reliability, regulatory compliance,
Quality of Service (QoS), as well as techniques
for scaling to support potentially millions of
individual end points.
such as a RAN Gateway, is best served if it can
be leveraged beyond a single application. While
many vendors are investigating RAN Gateways
with a single 3G femtocell application in mind,
there are requirements to support 2G or combo
(2G/3G) access points, as well as applications
beyond femtocells.
DArD
scalable, proven and secure method for delivering mobile
voice and data services over the internet. Known as the
`Generic Access Network' (GAN) specification within 3GPP,
the UMA standard defines the UMA Network Controller
(UNC) that, by definition, is a RAN Gateway that can be
directly applied to also meet the unique challenges of
femtocell deployment.
founder and chief technology officer of Ubiquisys, the
global leader in femtocells. "It's already been deployed, it
has a proven security approach, a lot of thought has gone
into discovery and registration of devices, and it scales well.
UMA is really helping accelerate the femtocell market."
ToWArD STAnDArDiZATion
connectivity standard. It is well vetted and currently deployed
in large-scale dual-mode handset (DMH) applications in
the United States, Spain, France and the UK, among other
countries. It has been proven secure, scalable, cost-effective
and robust. In addition, the minor modifications required to
support 3G femtocells are already underway and expected to
complete within 3GPP in early 2008.