Mapping The Mobile Network

NLOS (Non Line Of Site) systems – sub 6GHz

Conventional NLOS products work in the sub-6GHz band using OFDM (orthogonal frequency division multiplexing) technology, for multipath handling. By using refraction, reflection and penetration NLOS systems can bend, bounce or send waves through buildings or other obstacles. Although NLOS stands for Non Line Of Sight, you will often see nLOS used, which can stand for near Line Of Sight. NLOS systems can be P2P or P2MP.

The attraction of NLOS systems is that they require fewer sites, and usually less engineering etc The drawback has been that the lack of availability of spectrum at sub-6GHz has limited capacities. A number of companies are addressing his with technologies that make use of advanced antenna technologies or smarter resource management from a master hub. Others are looking at NLOS at higher frequencies – to gain more capacities.

Read more on the NLOs challenge and some proposed alternatives.

http://the-mobile-network.com/article/MTE3/Ericsson-makes-case-for-NLOS-backhaul-for-small-cells.html

http://the-mobile-network.com/article/MjA3/Tarana-Wireless-claims-small-cell-NLOS-backhaul-breakthrough.html

http://the-mobile-network.com/article/OTI=/Fastback-Networks-claims-backhaul-breakthrough-with-Any-Line-of-Sight.html