WMC

1. CELLAREA
Prepared By
Dr.J.Jospin Jeya
SRM Institute of Science and Technology 1

2. Cell area
SRM Institute of Science and Technology 2
•A cell is the radio area covered by a transmitting station or a BS.
All MSs in that area are connected and serviced by the BS.
•There are many factors that cause reflections and refractions of the
signals, including elevation of the terrain, presence of a hill or
valley or a tall building, and presence of particles in the air.
•Therefore, the coverage area may be a little distorted [Figure 1(b)].
•There are many possible models that can be used, to represent a
cell boundary and the most popular alternatives of hexagon, square,
and equilateral triangle are shown in Figure 1(c).
•In most modeling and simulation, hexagons are used, as a hexagon
is closer to a circle and multiple hexagons can be arranged next to
each other, without having any overlapping area and without
leaving any uncovered space in between.
•

3. Cell area
SRM Institute of Science and Technology 3
Cell
R
R
R
R
R
Fig. 1 Shape of the cell coverage area. (a) Ideal cell (b) Actual cell (c) Different cell model
•The size and capacity of the cell per unit area and the impact
of the shape of a cell on service characteristics are shown in
Table .
•It is clear that if the cell area is increased, the number of
channels per unit area is reduced for the same number of
channels and is good for less-populated areas, with fewer cell
phone subscribers.

4. Cell area
SRM Institute of Science and Technology 4