Product Description

Product Description
32 (98) © Nokia Corporation Draft DN991444
Nokia Proprietary and Confidential Issue 3-0 en Draft
Efficient frequency re-use requires that the size of the coverage area (cell) be
limited. Figure 6 shows how the buildings surrounding the Nokia MetroSite
EDGE Base Station can be used to limit the cell size and shape in an urban
environment.
Figure 6. Microcells built with the Nokia MetroSite EDGE Base Station
The Nokia MetroSite EDGE Base Station can be sectored freely. A sector
consists of one broadcast control channel (BCCH) TRX and, often, one to three
traffic channel (TCH) TRXs. The maximum number of TRXs in one sector is
four.
At the BSC, one of the slave TRXs is by default defined as the BCCH TRX. The
BCCH TRX the most likely TRX to need replacement and a slave TRX can be
replaced without interrupting the BTS operation. If desired, the BCCH can be
forced on the master TRX by using the preferred BCCH feature at the BSC.
By using the different sectoring possibilities provided by the Nokia MetroSite
EDGE Base Station and by directing the antennas, different types of coverage
areas can be created. The actual shape of the coverage areas varies depending on
the environment.
BTS
BTS