South Korea’s LG Uplus claims to have become the first of the country’s mobile network operators to establish a tri-bandwidth multicarrier system which automatically distributes voice and data traffic. With the cellco said to have combined spectrum in the 800MHz, 2100MHz and 2.6GHz bands, according to the JoongAng Daily, the upgraded service is initially available in the capital Seoul and some Greater Seoul areas, while it is expected to be expanded to other metropolitan cities next month, before a nationwide rollout in July 2014. Meanwhile, unlike existing multicarrier technology, which only enhances data traffic, LTE-A 3band will reportedly boost the quality of both data and voice calls, with LG Uplus having assigned more optimal frequency bandwidth to each service. To that end, it is understood that data traffic will primarily utilise the operator’s newly obtained 2.6GHz spectrum, due to it being wider that the other two bandwidths and thus offering better data speeds. Voice calls will primarily connect to the 800MHz band. While the new technology is only available via those LTE handsets that are compatible with the 2.6GHz band, LG Uplus has said it intends to make it available to all smartphones released in the future.
As previously reported by CommsUpdate, last month LG Uplus outlined plans to roll out higher speeds via the combining of a 40MHz block of spectrum in the 2.6GHz band, a 20MHz block in the 800MHz band and a 20MHz block of 2100MHz frequencies. South Korea’s smallest cellco by subscribers was cited as saying of its plans: ‘The 3band Carrier Aggregation (CA) technology marks another progress from wider-bandwidth LTE-A service, and our demonstration proves our technology competitiveness … The service will be available by the end of this year, with facilities and devices supporting the network under development.’