CSL WiMAX Training

Welcome

Instructor Md. Shahidul Islam Mamun

Transmission Engineer & Clarity Subject Mater ExpertMotorola Telecommunications Bangladesh Private Limited,2nd Floor, Unique Oval, 45 Kemal Ataturk Ave, Banani C.A

Dhaka- 1213, BangladeshEmail: - mamun.eng@gmail.com

Mob: - +8801716020374.

Canopy Technical Training

RSSI The reasons behind using the RSSI settings early on in the

alignment process and eliminating them from the long-term monitoring process are very simple. RSSI was not intended to be an absolute measurement instrument but rather a short-term duration tool to help in the establishment of the relative signal strength during the alignment process. Since RSSI was not intended to be an absolute measurement instrument, constant monitoring of the RSSI value over time will not yield much useful information.

The Canopy User Manual advises that a minimum RSSI level of 700 is considered adequate for signal strength. This level may be unnecessarily high. Generally, the higher the RSSI level is the stronger the signal. The operator should maximize RSSI as best as possible and use the jitter and link test to optimize the link. For example, if an installer can only achieve a maximum RSSI of 500 and great jitter and link test then the link is good.

Jitter On the other hand, it is the representation of jitter that conveys

the most important information when one is trying to establish the integrity of an RF link. Jitter is a measure of the variability in temporal position (the variation between the arrival time and the expected time). Shown in Figure 1, the scale for Jitter in a 10 Mbps system is 5 to 15 with 5 being the best and 15 being theworst. An operator should install a link with its average jitter eporting between 5 and 9. A consistent level greater than 9 is considered unacceptable and the link should be realigned. Shown in Figure 2, the scale for Jitter in a 20 Mbps system is 5 to 15 with acceptable values anywhere in that range.

The Canopy link tests, available on the web interface tool, should also be used when installing and monitoring a Canopy system. The link test should

generate efficiencies in the uplink and downlink directions of greater than 90 percent.

Link Test

Paradyne

Paradyne's ENE2044 and ENE2084 are loop bonding network extenders for Paradyne's 12000 and 4000 IP Broadband Access Concentrators that provide up to 8 Mbps (ENE2044) or 16 Mbps (ENE2084) of symmetrical bandwidth using E1 lines.

The ENE2044 features four E1 ports and the ENE2084 eight E1 ports, each capable of up to 2.0 Mbps bandwidth. When used with any Paradyne loop bonding compatible product, up to eight ports may be used to deliver high-speed bandwidth at any given distance. Paradyne's loop bonded technology provides automatic load balancing and fail-over for optimum redundancy and data throughput. In addition the ENE2044 and ENE2084 support repeaters installed on the E1 loop, ensuring maximum distance and flexibility.

The ENE2044 and ENE2084 can be connected to any combination of E1 uplink interface modules, micro interface modules, and network extenders, so long as every connection pairs a provider and a subscriber unit.

Survey & Implementation

1. Survey ( AP & SM Side)

2. Installation (AP & SM Side)

3. IP Planning

4. Commissioning & Alignment

5. Integration (SM to NOC)

AP & SM Installation

AP Site Equipment Setup

Single Output DC-DC

ConverterRJ45 Pigtail ConnectorRJ45 Pigtail Connector

Canopy Surge Suppressor

Canopy

Access Point

Ground

E1 to Ethernet Converter

Circuit Breaker Box

CAT5 Cable

#6 AWG Ground Wire

PBW#10 AWG wire ( + )

PBW#10 AWG wire ( - )

120 Ohm twisted pair cable Warid’s DDF

Canopy AP to Surge Suppressor

E1-Ethernet Converter to Warid’s DDF

Circuit Breaker Connections

Single Output DC-DC

Converter

E1 to Ethernet Converter

Circuit Breaker

SM Site Equipment Setup

Commissioning, Alignment & Troubleshooting

AP Commissioning Script

SM Commissioning Script

Integration

Thanks