User's Manual

AP_CMM2 User Manual Issue 4 Draft Pa
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SYSTEM OVERVIEW AND SITE PLANNING
Definitions:
Access Point Module – one (1) module that is used to distribute Internet services in a 60-degree
sector of up to 200 subscribers.
Access Point Cluster – two (2) to six (6) Access Point modules used to distribute Internet service to
a community of up to 1200 subscribers. Each Access Point module will cover a 60-degree sector
for a total of up to 360 degrees.
Cluster Management Module – a module that contains power, GPS timing, and networking for an
Access Point cluster. Canopy Backhaul Modules can also be connected to the Cluster
Management Module making it the central connectivity point for an entire site.
Overview:
In the Canopy System, each subscriber module communicates with an Access Point module in an
assign time slot that is controlled by the Access Point. The Access Point module coordinates the
data needs of the subscriber in both the downlink and the uplink to allow for seamless
communication throughout the entire network.
Access Point modules use a multipoint protocol to communication with each of the subscriber
modules registered in the system. Access Point modules can be deployed in the 2.4, the 5.2 GHz,
or the 5.7 GHz band allowing for a very versatile system architecture to reach out through the last-
mile to all potential customers.
The maximum connection distances are shown in the following table:
Band Passive Reflector on SM? Maximum range
2.4 GHz No 5 miles (8 km)
2.4 GHz Yes 15 miles (24 km)
5.2 GHz Not allowed 2 miles (3.6 km)
5.7 GHz No 2 miles (3.6 km)
5.7 GHz Yes 10 miles (16 km)
Note: Distances will based on terrain and other line of sight issues.
To bring a network feed out to a remotely located Access Point cluster, the Canopy Backhaul
Module can be used to create a point-to-point link out to the location. The Canopy Backhaul
Module will interface with the Cluster Management Module to seamlessly integrate the entire
system. For more information on the
Canopy Backhaul Module see its user manual.
The Cluster Management Module is key to the operation of the Canopy System. At one cluster site
or throughout the system the Cluster Management Module provides a GPS timing pulse to each
module so that their transmission cycles are synchronized. If one Access Point module were to not
be synchronized then it may be transmitting during a receive cycle of the other modules and cause
the receiver to be desensitized. This is also true of the Canopy Backhaul timing master Modules.