User Manual
Table Of Contents
- BreezeMAX® Extreme
- System Manual
- About This Manual
- Contents
- System Description
- 1.1 About WiMAX
- 1.2 WiMAX Network Architecture
- 1.3 BreezeMAX Extreme
- 1.4 Specifications
- 1.4.1 General Modem & Radio
- 1.4.2 3.x GHz BTS
- 1.4.3 5 GHz BTS
- 1.4.4 Sensitivity
- 1.4.5 3.x GHz Antennas
- 1.4.6 5 GHz Antennas
- 1.4.7 Power Supply
- 1.4.8 GPS Antennas
- 1.4.9 Data Communication (Ethernet Port)
- 1.4.10 Configuration and Management
- 1.4.11 Environmental
- 1.4.12 BTS Standards Compliance, General
- 1.4.13 Notes on Maximum Tx Power Limitations for 5 GHz Units:
- Installation
- 2.1 BTS Installation
- 2.2 GPS Installation
- 2.3 Indoor Power Supply Installation
- 2.4 Cable Connections
- 2.5 External Antennas Connection
- Commissioning
- Operation and Administration
- 4.1 BreezeMAX Extreme System Management
- 4.2 The Monitor Program
- 4.3 IP Addresses Configuration
- 4.4 The Main Menu
- 4.5 BTS Menu
- 4.5.1 Show Summary
- 4.5.2 Show Properties
- 4.5.3 Configuration
- 4.5.4 Unit Control
- 4.5.5 Fault Management
- 4.5.6 Performance Counters
- 4.6 ASN-GW Menu
- 4.6.1 AAA
- 4.6.2 Services Menu
- 4.6.2.1 Common Operations in Services Menus
- 4.6.2.2 MSs Services
- 4.6.2.3 Service Profiles
- 4.6.2.4 QoS Profiles
- 4.6.2.5 Multiple Service Flows
- 4.6.2.6 Service Rules
- 4.6.2.7 Classifiers
- 4.6.2.8 Service Groups
- 4.6.2.9 Service Interfaces
- 4.6.2.9.1 Service Interface ID
- 4.6.2.9.2 Service Interface Name
- 4.6.2.9.3 Forwarding Rule Name
- 4.6.2.9.4 CS Type
- 4.6.2.9.5 VLAN Interface
- 4.6.2.9.6 VLAN Transparency
- 4.6.2.9.7 VLAN ID
- 4.6.2.9.8 VLAN Priority Marking
- 4.6.2.9.9 VLAN Priority
- 4.6.2.9.10 VLAN List
- 4.6.2.9.11 Inner DSCP Marking
- 4.6.2.9.12 Inner DSCP
- 4.6.2.10 Forwarding Rules
- 4.7 Sector Menu
- 4.8 BS Menu
- 4.9 Radio Channel Menu
- 4.10 Antenna Menu
- 4.11 GPS Menu
- 4.12 MS Menu
- 4.13 Parameters Summary
- Glossary
Chapter 1 - System Description BreezeMAX Extreme
BreezeMAX Extreme 15 System Manual
1.3.6 GPS Antenna
GPS is used to synchronize the air link frames of Intra-site and Inter-site located
sectors to ensure that in all sectors the air frame will start at the same time, and
that all sectors will switch from transmit (downlink) to receive (uplink) at the same
time. This synchronization is necessary to prevent Intra-site and Inter-site sectors
interference and saturation (assuming that all neighboring sectors are operating
with the same DL/UL ratio).
The BTS includes an internal GPS receiver with hold over mechanism in case GPS
is lost or satellites synchronization was not reached. The GPS clock required is
1PPS with accuracy of 10
-11
and maximum jitter of 100ns. These GPS clock
requirements can be reached by a GPS receiver when it receives at least 4
satellites. After initial synchronization, at least two satellites should be received to
maintain sufficient synchronization.
Alvarion offers two types of GPS antennas:
Active high-gain antenna that can be installed at a distance of up to 25m from
the BTS.
Basic miniature antennas that can be installed at a distance of up to 3m from
the BTS.