8.3.
Limitations of the analysis
Theoretical coverage calculations of the different bands of LTE and UMTS Network are
made with the Link Budget. Theoretical throughputs limits are given by Shannon bound
on different channels. However, theoretical calculations are always subject to larger
deviations in a time varying radio channel. Slow and fast fading that act upon a radio
signal in a wireless channel make the estimation difficult. The trend of radio signal or
RSRP in case of LTE from transmitter to the receiver at different distance can be pre-
dicted. However, an exact or a close estimate again is hard to make. RSRQ, yet another
radio signal parameter associated with RSRP is similarly difficult to precisely estimate.
Theoretical coverage estimation models one such as Okumura-Hata model has its own
limitations; affect or terrain type, elevation etc. Rather than relying on just the link
budget, a proper industrial standard network planning tool or a simulation tool would be
more precise.
Do'stlaringiz bilan baham: |