Inspect the physical building structure, locate potential equipment rooms (telecom closets), identify cable pathways, and measure existing macro signal leakage.
Then, using the (e.g., COST 231 Multi-wall):
Inside buildings, radio signals face enormous obstacles: concrete walls, metal structures, glass coatings, and other sources of attenuation that cause what engineers call “penetration loss”. Even a strong outdoor signal may drop to unusable levels just a few metres inside a building. Furthermore, high‑rise office towers, airports, and other dense environments create massive demand for capacity – far more than any single macro base station can serve.
Indoor RF planning differs fundamentally from outdoor planning. Outdoor networks focus on wide area coverage, while indoor networks prioritize high capacity, dominant signal dominance, and interference mitigation. The primary objectives detailed in the text include: The primary objectives detailed in the text include:
Using specialized software (like iBwave) to model 3D building environments and simulate coverage maps.
The third edition bridges the gap between legacy voice networks and high-speed data systems. It covers three major generations of mobile technology:
| Generation | Frequency | Key Concern | Indoor Design Goal | |------------|-----------|-------------|--------------------| | 2G (GSM) | 900/1800 MHz | Coverage & Handover | RxLev > -85 dBm | | 3G (UMTS/HSPA) | 2100 MHz | Ec/Io & Soft Handover | CPICH RSCP > -80 dBm, Ec/Io > -12 dB | | 4G (LTE) | 800/1800/2600 MHz | SINR & Throughput | RSRP > -95 dBm, SINR > 0 dB | and 4G layers simultaneously.
The book covers a wide range of topics related to indoor radio planning, including:
Ensuring that 900MHz (2G), 2100MHz (3G), and 2600MHz (4G) frequencies do not cause interference or PIM (Passive Intermodulation).
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Indoor radio planning is a critical discipline in mobile communications. Over 80% of mobile data traffic originates from or terminates inside buildings. High-frequency signals from outdoor macro cell towers struggle to penetrate modern building materials like concrete, tinted glass, and steel.
Introduces mobile packet data. Planning shifts from pure coverage to capacity and interference management. It addresses unique challenges like the "cell breathing" effect.
Received Power (dBm)=Transmitter Power (dBm)+Gains (dB)−Losses (dB)Received Power (dBm) equals Transmitter Power (dBm) plus Gains (dB) minus Losses (dB)
Planners run calculations to verify that both the cell edge coverage requirements and the maximum throughput targets are met for 2G, 3G, and 4G layers simultaneously.