3C-HSDPA technology at 63 Mbps. Free Technical Library News

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3C-HSDPA technology at 63 Mbps

16.07.2014

Turkcell, Ericsson and Qualcomm Technologies (a subsidiary of Qualcomm) demonstrated the operation of 3C-HSDPA (3-Carrier High-Speed Downlink Packet Access) technology in a commercial network. This technology provides for the aggregation of three frequency bands. Aggregation of three carriers in the HSDPA network allows, regardless of the degree of network congestion, to increase the data download speed by 50% compared to the possibilities provided by the use of a single frequency band. During the demo, the peak downlink speed reached 63 Mbps.

The tests were carried out in the current WCDMA network of the Turkish operator Turkcell in the 2,1 GHz band using the aggregation of three carriers of 5 MHz each for downloading data to a smartphone and two carriers of 5 MHz each for transmitting data from a smartphone to the network. During the demonstration, the features that will be included in the Ericsson 15A software, as well as the operation of a smartphone based on a Qualcomm processor and modem, were presented. All infrastructure used for testing, including cellular and transport components, was provided by Ericsson.

3C-HSDPA technology allows data transmission in one stream using three frequency bands 5 MHz wide each for one subscriber device. 3C-HSDPA makes it possible to use three bands in one frequency band and two bands from different frequency bands for data transmission.

During the demonstration, the EUL-MC (Enhanced Uplink Multi-carrier) technology, implemented in software release 14B, was used, which makes it possible to speed up data transmission in the uplink by 100%.

EUL-MC allows one stream to transmit data on the uplink at a speed of 11,5 Mbps by aggregating two 5 MHz carriers. At the same time, a 100% increase in speed is observed regardless of the degree of network congestion as a whole - both in the center of the cells and at the borders.

3C-HSDPA and EUL-MC are a new stage in the development of HSPA using carrier aggregation technology. Combining multiple frequency bands increases network capacity, increases peak data rates, and improves application coverage. Both of these technologies provide an opportunity to improve the quality of ISDN networks. Commercial use of 3C-HSDPA and EUL-MC will begin in the second half of 2014.

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