UNIT 5
- Types of antenna used for coverage & interference reduction? exp them.
- Interference reduction by direction antenna at cell site
- Characteristics of cell site antenna
- exp the following operational func of excess channel (a) FOCC (b) RECC
- exp how channel sharing & borrowing increases trunk efficiency of channels?
- how to solve the prob of heavy traffic non uniform pattern in the sites close to city
- exp DCA, FCA, BCA, FBCA
- force hand off & uses
- factors influencing the dropped call rate.
- (a) cell site hand off (b) intersystem hand off
- exp traffic channel in GSM
- four sub systems of GSM in detail with diagram
- comp CDMA, TDMA, FDMA
- req of HLR & VLR in N/W switching subsystem & diff them.
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