User Manual

ADCP-XX-XXX • November 2000 • Section 3: WMTS Functional Description
Page 3-2
 2000, ADC Telecommunications, Inc.
1 INTRODUCTION
1.1 Overview
The WMTS is an IP centric bridge for data over radio communication system. It is designed to allow
IP access over wireless channels to business, government, schools, hospitals and residential users. The
major applications are: Internet access, multi-media, video conferencing, distant learning and more.
Wireless modems interconnect computers and LANs with the Internet world and any other external
services using radio waves. Radio signals have several advantages over hardwire systems that include
quick deployment, higher data rates than conventional telephone lines, and the ability to service
customers independent of the traditional infrastructure. Wireless modems convert data to RF and back
to data in a similar manner to ow telephony modems convert data to frequencies that pass through
telephone systems. Broadband modems, as referred to in this discussion, perform these functions
using frequency bands with at least 6 Megahertz of bandwidth. This allows very high data rates
compared to telephony modems. The frequency bands used as examples are the MDS and MDS/ITFS
channels.
1.2 Internet Access
Users across the wireless network are provided access to central communication facilities located at
the base station. The base station is logically situated between the WAN and ISP on one side, and the
wireless network and the Wireless Modem Unit (WMU) on the other side.
1.3 DOCSIS Compliance
The WMU is a DOCSIS compliant device, with enhancement for wireless applications. The system
should be regarded as a DOCSIS system, because it implements networks with DOCSIS features over
wireless channels.