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Supplemental downlink technology demonstrated

Orange, Ericsson, Qualcom use L-band frequencies to demonstrate new technology

Supplemental downlink technology demonstrated
Using L-band frequencies to demonstrate the use of supplemental downlink technology on a mobile network, has been successfully showcased by Orange, Ericsson and Qualcomm Incorporated.

Orange, Ericsson and Qualcomm Incorporated have successfully showcased the use of L-band frequencies to demonstrate the use of supplemental downlink technology on a mobile network, thereby confirming the potential of this approach to increase mobile broadband capacity and enhance user experience. The demonstration was carried out on Orange's network in Toulouse, France, on 21st February 2013.

This initiative was achieved following the recent decision by the CEPT (European Conference of Postal and Telecommunications Administration) to harmonise use of the L-band (1452-1492 MHz), reserving it specifically for supplemental downlink technology.

The trial system, which uses L-band frequencies for testing, was authorised by the French telecoms regulator, Arcep, in June 2012.

The system combines L-band frequencies in the downlink mode with traditional 2.1 GHz frequencies owned by Orange to boost downlink capacity. The trial network uses radio base stations supplied by Ericsson and devices equipped with Qualcomm chipsets.

The live demonstration held in Toulouse has demonstrated the relevance of this technology for increasing download speed and improving user experience.

Supplemental downlink is a new technology that can be used to increase downlink capacity on both 3G and LTE networks. The technology represents a significant step forward in traditional spectrum aggregation systems that are already used for HSPA+ and LTE networks by the 3GPP standardisation group. Supplemental downlink is a technological breakthrough as it provides a significantly enhanced technique for using radio spectrum for wireless networks. Supplemental downlink technology can now be used in the L-Band and could also be considered in other frequency bands.

This new technology will allow network operators to manage the ever-increasing demand for data service on wireless networks and provide improved performance for end users.

"After two years of extensive studies, CEPT ECC decided to harmonise the L-band for Supplemental Downlink. I am happy to see the industry materializing rapidly this decision which will generate substantial benefits to European users," said Eric Fournier, chairman of the Electronic Communications committee.

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