Handbook

Table Of Contents
ClearFill Star CDMA
1100187 Rev. 1.0
Page 10 of 152
1 Introduction
This document describes the ClearFill®Star system and its components.
1.1 General
ClearFill®Star is an innovative, digital, IP-based wireless indoor coverage solution.
ClearFill®Star is a unique low-cost approach that improves indoor cellular service by
converting radio coverage into an IP based Ethernet application. It is based on wireless,
Ethernet, and packet technology. This in-building cellular solution uses standard LAN cabling
(CAT5), switches, routers, and network administration which are already installed in most
office buildings, making ClearFill®Star simple and inexpensive to deploy, maintain, and
reconfigure.
Indoor coverage will be provided by ClearFill®Star indoor remote radio heads (RRH)
powered over Ethernet, indoor capacity is defined by the number of ClearFill®Star base
station interface units (BSI) connecting to BTSs/NodeBs.
Figure 1 ClearFill®Star system component distribution
This solution allows distributing the RF signals from a base station via a Gigabit Ethernet
Network. The system digitizes and packages the RF signal of a base station and distributes it
over an Ethernet network.
ClearFill®Star splits coverage- and capacity functionality. This feature allows to extend
capacity at only one central point and to allocate the resource to different RRHs, according to
demand. This concept makes the system highly scaleable and flexible.
The BSI RF interface makes the whole solution BTS vendor agnostic.