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The well-kept secret of 2G-3G-4G-5G Dynamic Spectrum Sharing


Does launching nationwide 5G coverage with spectrum currently used for 4G sound attractive? And all with a simple upgrade to your network software? It certainly does, but Nokia’s Dynamic Spectrum (DSS) portfolio, offering four flavors of DSS to cover all radio technologies, already does so much more.

Nokia has had DSS solutions in the field for several years. Introducing the capability was made easier with the lessons learned from deploying network based dynamic frequency allocation, albeit within a single technology, a unique competitive advantage. These lessons meant our unique hardware and software architecture was already capable of supporting DSS without any additional nodes, unlike that of some of our competitors.

Another important differentiator has been our continuous focus on improving the spectral efficiency of legacy technologies, allowing DSS solutions to allocate maximum spectrum and thereby maximum data traffic to the most efficient layer. This approach has helped us deliver a DSS solution that does not reduce the quality of service of legacy technology users - we avoided the temptation to cook up a “blind” spectrum sharing solution to be passed off as DSS.

Looking back to our first 2G-4G DSS solution, customers wanted to use the low band spectrum employed by GSM for an urgent expansion of LTE. The bottlenecks preventing a complete spectrum refarming were the hotspot sites that still carried significant voice traffic. Nokia’s 2G-4G DSS solution, combined with market leading spectral efficiency features, ensured a swift rollout of LTE900, achieving an over 60% increase in VoLTE traffic and a greater than 30% boost in data traffic, together with improved LTE coverage - all this while maintaining pre-DSS Quality of Service for legacy technology users.

Since that time, Nokia has commercialized 2G-3G DSS, 3G-4G DSS and more recently 4G-5G DSS user devices are also being supported. The Nokia solution works on all relevant frequency bands and is the most complete on the market, offering 2G-3G-4G-5G DSS in a single base station sub rack.

The secret of success lies in the unique Nokia design, which focuses on spectral efficiency. The point, therefore, is not the introduction of new radio access technology in existing frequency bands but in maximizing the performance of all RATs during dynamic sharing. Not bad eh?

Now service providers have a way to balance their investments on the path to 5G in line with market demand.

Want to know more? See the new Nokia DSS white paper

Share your thoughts on this topic by joining the Twitter discussion with @nokianetworks or @nokia using #nokia #5g #4g #3g #2g

Harry Kuosa

About Harry Kuosa

Harry Kuosa is Nokia’s Head of Single RAN and Zero Emissions marketing. Harry holds a BSc. in Electrical Engineering and his 30+ years telecoms experience covers most types of transmission and access networks. He is passionate about 5G and his current zero emissions role, but still makes time to enjoy skiking in the beautiful Finnish countryside.

Tweet me at @harkuo

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