User Manual

Sector Configuration

68P09255A57-2

Aug 2002

SC4812ET Optimization/ATP Manual Software Release R16.1.x.x

PRELIMINARY

1-22

Sector Configuration

There are a number of ways to configure the BTS frame. Table 1-5

outlines the basic requirements. When carrier capacity is greater than

two, a 2:1 or 4:1 cavity combiner must be used. For one or two carriers,

bandpass filters or cavity combiners may be used, depending on

sectorization and channel sequencing.

Table 1-5: BTS Sector Configuration

Number of

carriers

Number of

sectors

Channel spacing Filter requirements

1 3 or 6 N/A Bandpass Filter, Cavity Combiner (2:1 or 4:1)

2 6 Non-adjacent Cavity Combiner (2:1 Only)

2 6 Adjacent Dual Band Pass Filter

2 3 Non-adjacent Cavity Combiner (2:1 or 4:1)

2 3 Adjacent Bandpass Filter

3,4 3 Non-adjacent Cavity Combiner (2:1 or 4:1)

3,4 3 Adjacent Cavity Combiner (2:1 Only)

The matrix in Table 1-6 shows a correlation between the various sector

configurations and BBX cards.

NOTE

In Table 1-6, BBXs may be BBX2s or BBX-1Xs.