Page 390 - GuideFWA

EFFECT OF INTERIOR BUILDING LOSS

• For a 100m × 100m building, half the locations within the building are
within 15m of an exterior wall.

• 64% of the locations are within 20m and 84% are within 30m of an
outside wall.

• With modular soft-partition construction of many modern offices,
additional path loss will be small (less than 2-3 dB for 15m) based on
propagation model in ETR-310 (p. 45).

• Many higher-level managers who have wireless phones will also have
offices with windows, along the outside wall of the building.

• CONCLUSION: Interior building loss will in general not significantly
reduce the FWA interference.

BUILDING AREA DISTRIBUTION:
ILLUSTRATIVE EXAMPLE

• The area of the building is 10 000 m2
• The points outside the inner square are

within 15m of an outside wall
• The area of the inner square is 4900 m2
• More than half the overall area of the

building is within 15m of an exterior wall.

Inter-American Telecommunication Commission 371