Vodafone and Huawei Testing GSM-LTE Dynamic Spectrum Sharing
Published on: 20th Jun 2014
Huawei has announced the successful implementation of the world's first GSM LTE Dynamic Spectrum Sharing (GL DSS) trial with Vodafone Spain.
GL DSS is able to improve LTE capacity by up to 50% through maximizing wireless spectrum utilization.
Competition is fierce for LTE spectrum resources globally, especially for bandwidths including 1.8GHz. Several operators, including Vodafone, currently hold bandwidths of 20MHz at 1.8GHz, of which 10MHz is used for LTE and the rest for GSM traffic.
Huawei's SRC brings flexibility to spectrum resource allocation by introducing GSM-LTE Dynamic Spectrum Sharing (GL DSS). By applying interference scheduling in real time, the SRC gives GSM higher priority to use spectrum in periods of heavy traffic, providing protection against GSM voice interference. SRC also provides more spectrum for LTE compared to the standard fixed configuration through dynamic allocation; allowing for better LTE throughput.
This trial verified GL DSS performance in the Vodafone-Spain commercial network, with results showing that this solution can reach LTE capacity gains of up to 50%, making 15MHz effectively available for LTE with limited impact to GSM services.