Motorola Canopy Backhaul Module Bedienungsanleitung PDF herunterladen (Seite 5)

Configuration Guide

Subscriber Modules

Network Connection

360 Degree Coverage

60 Degree

Coverage Wedge

GPS Antenna

GPS Receiver

Hardened Ethernet Switch

Power Supply

Cluster Management

Module (CMM)

Up to 2 Miles

Power Supply

1 to 6 Units

Subscriber Modules

Network Connection

360 Degree Coverage

60 Degree

Coverage Wedge

GPS Antenna

GPS Receiver

Hardened Ethernet Switch

Power Supply

Cluster Management

Module (CMM)

Up to 2 Miles

Power Supply

1 to 6 Units

Figure 1. The Motorola Canopy System

Components

The following sections highlight each of the Canopy components.

Access Point (AP) Cluster

The AP Cluster is a base station that can incorporate between one and six AP Modules and up to

two Backhaul Modules (BH). Each module operates with a 60-degree directional antenna to

provide coverage to one sector.

One of the unique capabilities of the Canopy system is its ability to synchronize the transmission

timing of the AP Modules in all of the AP Clusters. The GPS receiver in the CMM is the key to

delivering this system level synchronization. The synchronization of the AP transmission along

with the specially designed Canopy Time Division Duplex (TDD) air interface ensures that all

AP Modules transmit at the same time while all Subscriber Modules (SM) are in a listen mode.

This synchronization also ensures that when the SMs are transmitting, all the AP Modules are

listening. This synchronization, enabled by the Cluster Management Module (CMM), ensures

that the Canopy system does not interfere with itself, since the AP Modules do not interfere with

each other and the SMs do not interfere with each other. This unique characteristic delivers an

ability to scale the network where Canopy AP Clusters can be added to the network to improve

system coverage or capacity without increasing the system interference.

The AP Module operates with a raw data rate of 10 Mbps and has a range of approximately two

miles (5.2 GHz) or ten miles (5.7 GHz SM with reflector). Each AP requires a 24-volt power

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