T-Mobile tops 1 Gbps with Ericsson LAA lab test

Tuesday 5 December 2017 | 16:09 CET | News

T-Mobile US and Ericsson have claimed a world first with gigabit speeds in lab tests of Licensed Assisted Access (LAA) technology. The companies achieved speeds of 1.1 Gbps using 12-layer LAA. 

The demo took place at T-Mobile's Bellevue, Washington lab using Ericsson Radio System and the TM500 network test equipment from Cobham Wireless. The data speeds were achieved by combining several key LTE technologies including 256 QAM, 4x4 MIMO, and LAA by aggregating two licensed carriers and three unlicensed carriers. 

LAA has been demonstrated previously on 10 layers, reaching download speeds of up to 1 Gbps. Extending to 12 layers enables speeds exceeding 1 Gbps. The Ericsson Radio 2205 gives operators the opportunity to deploy LTE on the 5GHz unlicensed band in outdoor micro cell environments. Using LAA, the unlicensed carriers on these radios can be aggregated with licensed carriers on the micro cells or on nearby macro cells. 

T-Mobile started offering commercial LTE-U services earlier this year over unlicensed spectrum in the 5 GHz band. Ericsson's LAA technology is expected to support higher speeds and has been in testing for several months by the operator. T-Mobile said it aims to start offering "near gigabit" speeds to customers in 2018. 

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