User's Manual

Table Of Contents

InfiNet Wireless R5000 Technical User Manual

V. Link Configuring

1. Preliminary decisions

Speed selection

Basic recommendations for the device’s speed selection are the following:

• The overall performance of the channel built using 54 Mbps devices is

just a little bit higher than for 48 Mbps devices. However, the noise

immunity for 54 Mbps is less than for 48 Mbps. So, the recommendation

is to configure your devices for 48 Mbps speed instead of 54 Mbps

• BS downstream speed to CPE can be configured as high as it is possible.

Upstream speed from CPE to BS should not exceed 24 Mbps. This kind of

asymmetry leads to less expenses to create a required attenuation

between BS sectors – subscriber’s equipment costs less and the optimal

price/performance parameter value is obtained

• By effective antenna selection for the subscriber units, one should set up

equal speeds for all subscribers regardless their individual performance

requirements

• In order to obtain a stable work mode for the whole network set up

Autobitrate mode with optimal range of available speeds provided

Examples of typical network equipment selection:

1. Network with upstream traffic prevailing (e.g. video surveillance systems)

• Base Station: 5000-O 5.8 24P200. Sector antenna gain: 17 dB

• Nearest subscribers (e.g. 3 km coverage area): 5000-O 5.8 24

with 19 dB directional antenna

• Remote subscribers (e.g. 9 km coverage area): 5000-O 5.8

24P200 with 29 dB directional antenna

• Bottom value for the speed: 12 Mbps

• This solution provides with the performance of not less than 8

Mbps real throughput

2. Network with downstream traffic prevailing (e.g. ISP networks)

• Base Station: 5000-O 5.8 36P300. Sector antenna gain: 17 dB

• Nearest subscribers (e.g. 6 km coverage area): 5000-O 5.8 18

with 19 dB directional antenna

• Remote subscribers (e.g. 12 km coverage area): 5000-O 5.8 18

with 29 dB directional antenna

• Bottom value for the speed: 6 Mbps

• This solution provides with the performance of not less than 4

Mbps of real throughput for upstream traffic and 8 Mbps for

downstream traffic with maximal coverage area

3. Network with downstream traffic prevailing (e.g. ISP with different

services)

• Base Station: 5000-O 5.8 36P3000. Sector antenna gain 17 dB

• Nearest subscribers (e.g. 2.5 km coverage area): 5000-O 5.8 19

dB directional antenna

• Remote subscribes (e.g. 5 km coverage area): 5000-O 18 with

29 dB directional antenna