User's Manual
RNU4000BS Base Station User Manual
Runcom Technologies Ltd. 3
1.1 Coverage Configurations
RNU4000BS supports either two or four RF channels and can provide coverage for either
one, two or four sectors depending on the sector density (throughput capacity) and radio performance
requirements (note that internal antenna can be used for single sector coverage only):
• Single-Sector solution of 4x4 – (for internal and external antennas) – used for
higher density sites: four channels for Tx and four channels for Rx MRC. This
configuration improves coverage through diversity and improve throughput through
MIMO 4x2.
• Dual-Sector solution of 2x2 (only relevant for external antennas) – used for lower
populated sites: two channels for Tx channels and two channels for Rx MRC. MIMO
of 2x2 can be perform if signal to noise ratio is good.
• Quad-Sector solution of 1x4 (only relevant for external antennas) – used for more
sparsely populated sites: single channel for Tx and single channel for Rx. This
configuration is highly cost effective but suffer from lower performance and
coverage area per sector (totally it covers more space)
The overall capacity, of single base station unit, with respect to the maximum number of
connected users, supported bands and throughput is constant; however, in a dual-sector installation, the
BS will transmit to two separate sectors in a cell, where each sector is serviced by two antennas. In quad
sector installation the BS will transmit to four sectors in a cell (Usually covers the entire cell 360
0
), where
each sector is serviced by one antenna. These two configurations reduce CAPEX and OPAX for operators
by covering cells with relatively low density or sparsely populations, which have low requirements for
concurrent user’s and / or lower data traffic.
The following figure shows a single sector covered by 4x Tx/Rx channels. Several of these sectors (within
the same site) should be installed, using the corresponding number of RNU4000BSs, to complete site
coverage. Each site can use single GPS antenna, installed on one of the BS, daisy-chained from BS to