User's Manual

User
AN-100U/UX Base Station
Manual
70-00058-01-04 Proprietary Redline Communications © 2010 Page 22 of 136 April 19, 2010
2.6.1 PTP Deployment
When deployed in a PTP configuration the base station establishes a dedicated bi-
directional link to a single subscriber. The PTP deployments typically use a directional
narrow beam antenna for both ends of the link.
2.6.2 PMP Deployment
When deployed in a PMP configuration the base station establishes bi-directional links to
more than one subscriber. PMP deployments typically use a wide beam (sector) antenna
at the base station and a narrow beam antenna at the subscriber. Service flows are used
to police service level agreements for each subscriber.
2.6.3 Channelization
The base station is a frequency-specific system, with the frequency band defined by the
modem. The use of the operating band must be in accordance with European
Conference of Postal and Telecommunications Administrations (CEPT)
Recommendation 14-03.
The base station divides the available frequency band into channels. Allocation of
channels during deployment is dependent on spectrum availability in the licensed FWA
band and local licensing requirements and conditions. Channel selection allows planners
to obtain the maximum geographic coverage, while avoiding frequency contention in
adjacent sectors.
2.6.4 Non Line-of-Sight
The RedMAX system supports line-of-sight (LOS), optical line-of-sight (OLOS), and non
line-of-sight (NLOS) operation. A clear LOS link has no obstacles within 60% of the first
Fresnel zone of the direct path. An OLOS link has obstructions within 60% of the first
Fresnel zone, but a visible path exists between the base station and subscriber. Refer to
the following illustration.
Figure 5: System - Fresnel Zone