This blog is by Sandra Pierini from the Networks business of Nokia.
If you have a neighbor who plays loud pop music, you’ll know that what you mainly hear is the ‘thump, thump, thump’ of the bass and not much else. That’s because low frequency acoustic waves penetrate walls much easier than higher frequency notes.
The same phenomenon occurs with low frequency radio waves, enabling them to travel further and through barriers more easily than higher frequency waves. That’s why navies use very low frequency radio signals to communicate with submarines at sea – only waves with these long wavelengths can travel hundreds of kilometers and penetrate through the deep water to reach submerged vessels.
This is also partly why refarming WCDMA from 2100 MHz frequency bands to 900 MHz is an attractive proposition for mobile operators. WCDMA on 900 MHz, with its better radio propagation properties, is a cost-effective way to deliver mobile broadband over large areas to rural users and to provide indoor coverage in busy downtown areas with their seemingly impenetrable jumble of small shops, large stores, shopping malls and tall office blocks.
We hear you loud and clear WCDMA 900
In addition, WCDMA 900 brings many cost and operational benefits. Its wider coverage means far fewer sites are needed than with WCDMA in the 2100 MHz band, while total cost of ownership can be as much as 60% lower. Most operators could re-use their existing site grids which they already employ for GSM in the 900 MHz band.
Nokia WCDMA frequency refarming takes the physics of low frequency propagation and applies sophisticated engineering to help operators use spectrum more efficiently. This allows them improve customer experience and gain extra revenue by using WCDMA in the 900 MHz band and sharing bandwidth with GSM.
Read our updated white paper on the topic: WCDMA Frequency Refarming: A leap towards ubiquitous mobile broadband coverage.
To share your thoughts on the topic, join the discussion with @NSNtweets using #NokiaNext #WCDMA #mobilebroadband #spectrum.