Line of Sight Considerations
Non-line-of-sight (NLOS) or near-line-of-sight is a term used to describe radio transmission across a path that is partially obstructed, usually by a physical object in the Fresnel zone (see diagram below).
Many types of radio transmissions depend, to varying degrees, on line of sight between the transmitter and receiver. Obstacles that commonly cause NLOS conditions include buildings, trees, hills, mountains, and, in some cases, high voltage electric power lines. Some of these obstructions reflect certain radio frequencies, while some simply absorb or garble the signals; but, in either case, they limit the signal strength and quality of radio transmissions, affecting the speed and performance of the service.
The BigAir wireless network works most effectively with clear line of sight (LOS), this allows BigAir to provide guaranteed speeds, latency and availability at all times. Near line of sight refers to implementations in which the Fresnel zone ‘touches' buildings or trees, but can still send a signal to the receiver from the basestation.
Non Line of Sight
Line of Sight
Near Line of Sight
