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Nokia highlights next-gen 5G network

Posted: 11 Sep 2015 ?? ?Print Version ?Bookmark and Share

Keywords:Nokia? 5G? network? MIMO? LTE?

During the recent CTIA Super Mobility Conference, Nokia Networks detailed a programmable 5G architecture for next-generation networks where most functions will become software-defined and automatic. Although work on a 5G cellular standard has not started yet, the system, many components of which Nokia has up and running, will automatically adapt to a legacy network to achieve lower latency and higher reliability, noted the company.

In Nokia's 5G network, most functions will become software-defined and automatic. Content and processing will be distributed across the network close to where they are needed, a release stated.

The Nokia system bets on a self-organised network with five major functions: 1) Network slicing where multiple independent and dedicated virtual sub-networks run services that have completely different latency, reliability, throughput and mobility requirements; 2) Dynamic experience management that provides a good user experience under high network load using up to 30 per cent fewer resources; 3) Service-determined connectivity that allows the connectivity path to be freely chosen according to actual service demand, not a single point-to-point IP connection; 4) Fast traffic forwarding in a distributed telco cloud that also supports a new generation of critical services for sectors as automotive and industrial; and 5) Mobility on demand for the 70 per cent of users who aren't mobile and do not need mobility support. Only 30 per cent of users are truly mobile, so there is an opportunity to use network resources more efficiently, Nokia said.

"The quality of customer experiences will be substantially higher, while almost instant response and rock-solid connectivity promise to transform the business processes of industry sectors from manufacturing to automotive and healthcare," the release said. "Operators will be able to offer network functions to any kind of industry under a network-as-a-service business model," it added.

Nokia demonstrated a 10Gb/s link over high frequencies earlier this year as part of its networking road map. The company's 5G research has focused on 70GHz to 80GHz frequencies using 2x2 MIMO (multiple-input and multiple-output) to reduce latency to 100ms.

Using massive MIMO to maximise traffic density while minimising interference comes with its own challenges. Research on controlling the hundreds of tiny antennas that create and steer beams, as well as arranging transceivers using chip-scale designs, still needs to be done said Peter Merz, head of radio systems research at Nokia Networks. Meanwhile Nokia engineers are working on a version of MIMO for LTE with eight to 16 antennas. 5G could use as many as 250 antennas.

- Jessica Lipsky
??EE Times

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