Vodafone Turkey and Huawei announced recently that they have jointly comleted the world first verification of the spectrum sharing solution between GSM and LTE on Vodafone's commercial 900 MHz networks in Diyarbakir city of Turkey.
Codenamed, GL, the solution enables spectrum sharing between GSM and LTE with unprecedented overlap between the two technologies, which increases both LTE data rate and cell capacity available in the 900 MHz spectrum allocation from Vodafone Turkey. Compared to LTE 5MHz, the average user throughput is increased by nearly 58% on downlink and 44% on uplink.
Vodafone Turkey launched 4.5G for commercial use in April 2016. With the largest 4.5G coverage in Turkey the operator currently serves over 8 million LTE users. As more and more users migrate to LTE, how to effectively allocate spectrum resources to handle increasing LTE data traffic is a priority for Vodafone Turkey.
GL spectrum sharing solution adopts Huawei-proprietary algorithms to free operators from the restrictions of standard LTE bandwidth, said Huawei. This solution ensures that scattered spectrum resources are fully utilized for higher data rate and better user experience.
According to Huawei, by introducing more flexibility in terms of the Resource Block allocation and spectrum allocation effectively used by LTE this allows to maintain sufficient GSM channels to carry the 2G CS traffic. The test cases show that GL spectrum sharing allows for an approximately 58% increase in average downlink user throughput, and a 44% increase average uplink user throughput, compared with LTE 5MHz bandwidth.