User's Manual

InfiNet Wireless R5000 Technical User Manual

V. Link Configuring

1. Preliminary decisions

Speed selection

Overall link performance is greatly depends on the right speed selection. Wrong

speed of a radio link in most cases lowers its performance characteristics. In the

result subscribers are getting bad services.

IW MINT architecture makes speed selection process fully automatic. Using IW

proprietary Link Forecasting and Active Testing algorithms MINT chooses the

optimal radio transmission speed individually for each connected subscriber

device.

Therefore, main recommendations for speed selection are:

enable autobitrate mechanism and set maximal available bitrate

on the radio interfaces of all the devices.

To estimate the real speed of a device prior to its installation and

deployment use RangeCalculator utility (see below).

Frequency planning for multi-sectored Base Stations

Base Stations with six sectors deliver the maximal performance by providing with

sector reciprocal reservation and best price/performance parameter value. When

having an optimal frequency gap of 40 MHz between adjacent sectors of the BS,

the following schemes are recommended to be configured (e.g. having 5

available in configuration frequencies F1, F2 … F5):

F1, F3, F5, F1, F3, F5

F1, F3, F1, F3, F1, F3

Transmitting power selection

High output power provides with a maximal connection performance. Power

decreasing is logical when the maximal speed is already reached and there are

no repeats. In this case an excessive output power can decrease the system

parameters. When having no built-in or external amplifiers one can try to install

the automatic power control for the subscriber.

Range|Bitrate calculation

Range/Bitrate calculator allows estimation of a bitrate and distance for a

particular radio link. This calculator can be downloaded from ―Repository‖ of our

support web-site (http://support.infinetwireless.com).