Swisscom claims it has become the first European operator to launch three-carrier aggregation combining LTE FDD and TDD modes in a commercial network on commercial chipsets.
The solution will provide more capacity on the network and Swisscom plans to roll it out to subscribers in Swiss metropolitan areas by summer 2016 to coincide with three-carrier FDD/TDD smartphone availability.
Using Ericsson technology, the Swiss operator deployed the solution on 18 August 2015 in a Swisscom shop in Zurich, Switzerland. For the demonstration in Swisscom's live commercial network, two LTE TDD carriers each with 20 MHz bandwidth in the 2.6 GHz frequency band (B41) and one LTE FDD carrier with 15 MHz in the 2.1 GHz band (B1) were used.
The live demonstration in Zurich was supported by Ericsson radio access network software 15B and hardware, as well as by Qualcom’s Snapdragon X12 LTE modem.
The combination of the three carriers in FDD-LTE and TDD-LTE will significantly enhance the future capacity of the network. The new technology will allow more users to benefit from peak data rates for downloads and uploads when using mobile internet, entertainment or enterprise services. In this specific set-up, a maximum 335 Mbps in the downlink was achieved.
Heinz Herren, CTO, Swisscom, said: "Swisscom innovates to offer customers the best network at all times. With LTE FDD and TDD we are the first provider in Europe to offer a completely new combination of technologies, and in doing so we are underscoring our technological leadership. LTE FDD/TDD will be provided to all our customers at heavily frequented locations from summer 2016."