Small cells are essentially miniature versions of the big cell
towers you see outdoors. They are part of a mobile operator’s network
infrastructure, and as such they need to coordinate with the operator’s core
network, with the surrounding macro network, and with neighboring small cells. However,
unlike macro base stations, small cells are deployed in high volume. Therefore, the tools and processes for
deploying and maintaining a relatively small number of macro cells cannot scale
economically to deploying hundreds of thousands of small cells.
Put simply, operators need small cells to be plug-and-play.
We define plug-and-play to mean that when a device is
connected, a sequence of events initiates automatically
to configure the device optimally for its function and environment. Vendor
“plug-and-play” claims are often (and understandably) met
with skepticism. But CommScope has invested heavily over the years in
making our small cell solutions as easy as possible to deploy. Our residential
deployments have placed a premium on this, and now we can deliver the same
benefits to operators deploying in the enterprise.
management system plays a large role. It connects to individual small cells
as well as to systems for operations, provisioning and customer support. It
performs functions integral to the small cell network including device setup
and monitoring, performance optimization, and problem resolution.
The management system acts as the control point for
coordinating radio parameters between small cells and the macro network. It directs individual small cells to adjust
radio parameter settings in response to changes in the macro network and spectrum
policies. For rapidly-densifying LTE networks, the ability to automate these frequent
adjustments is critical to providing the best possible signal quality.
Small cells themselves must also be designed to streamline deployment.
small cell architecture is designed to do just that. C-RAN simplifies radio
frequency design because there are no cell borders or border interference, as
there are with traditional standalone or controller-assisted small cells. Likewise, expanding the system to add
coverage or capacity does not force laborious re-designs because no new borders
are created. C-RAN even simplifies macro interference mitigation because it
reduces 20–30 physical cells into a single one that can easily coordinate with
neighboring macro cells.
Plug and play will become even more essential as our industry
moves toward direct-to-enterprise business models. Operators tell us they are
eager to see these models take hold, but that success will depend on
streamlining and reducing the probability of errors in the deployment process.