Abstract :
In indoor network communication a technology called Femtocell is known as a
development of the concept of macro cell architecture on cellular networks that
uses low power levels and has a smaller scope. The use of femtocell is in the form
of a Femtocell Access Point (FAP) device that is placed inside a building that aims
to increase coverage and capacity on an indoor network. To support the
communication process in the indoor scope a network design is needed. In this
study, the researchers made the design of the LTE indoor femtocell network in
Gedung IoT IT Telkom Purwokerto on floors 1,2, and 3 with a building area of
1800 m2
based on the COST-231 Multi Wall Indoor propagation model which was
simulated using Radiowave Propagation Simulator version 5.4. In this design two
work frequencies were used as comparison material, namely 1800 MHz FDD and
2300 MHz TDD with 20MHz bandwidth. Comparisons made on this design are
divided into two design methods, namely based on coverage and capacity. To
determine the number of FAP, a link-budget calculation is required, based on the
calculation of coverage needed by 6 FAP at the frequency of 1800 MHz and 9 FAP
at the frequency of 2300 MHz, based on capacity, 4 FAP is needed. The design uses
3 FAP placement scenarios to get the maximum design results by considering the
network performance parameters namely RSRP (Received Signal Received Power)
and SINR (Signal to Interference Ratio). From the simulation results, the best
scenario is design based on capacity at 1800 MHz frequency using scenario 2 (FAP
is positioned parallel to the center of the building) resulting in an average RSRP
value of -59.77 dBm and SINR average value of 14.15 dB .
Keywords : Indoor Network, LTE, Femtocell, Radiowave Propagation Simulator