Wireless Networking Concepts

Running head: WIRELESS NETWORKING CONCEPTS 1
Wireless Networking
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WIRELESS NETWORKING CONCEPTS 2
Question 1.
Cell Splitting is the practice of sub-dividing a overcrowded cell into inconsequential cells, all
with their separate base position and a compatible drop in aerial size/height and transmission
power. This swells the size of a cellular structure as it strengthens the number of times that
channels are used over and over again (Obaidat & Misra, 2017).
In the figure below, zone attended by A is assumed to be flooded with traffic. New base
positions are subsequently required in the area to gush the number of channels in the region and
to reduce the region served by the lone base station. To be exact, A is confined by six new
microcells; B, C, D, E, F and G (Zheng & Jamalipour, 2019).
Figure 1: Cell Splitting
Question 2.

WIRELESS NETWORKING CONCEPTS 3
N=12 BW =30 MHz R=2 km
Control channels per cell=10 no of users per channel=8
(i).
Reuse distance , D= √ ( 3 N )∗R
¿ √ ( 3∗12 )∗2=12 km
(ii).
Simplest channel=25 kHZ
Channel bandwidth=25∗2=50 kHz
No of channels per cell= 30000
50 − ( 10∗12 )=480 channels
But all channels are multiplexed amongst 8 operators, therefore the number of concurrent calls
supported per cell is
¿ 480
12 ∗8=320 calls per cell .
(iii)
Average number of call request per hour =60
1hour=3600sec
ƛ= 60
3600 = 1
60 requests per sec
Average duration of a call =5% of hour Norris, (2019).