Sig Nordal

Considering Ericsson built a good deal of T-Mobile’s first LTE network, it should come as no surprise that T-Mobile US has tapped the Swedish network infrastructure giant to complete the next phase of its ongoing 4G rollout. Ericsson announced on Tuesday that is building new LTE systems in the 700 MHz and 1900 MHz PCS bands for T-Mobile as well as providing the baseband processing glue that will meld those different networks together.

Specifically, [company]Ericsson[/company] has started building new 4G base station gear in the 700 MHz frequencies that T-Mobile bought from Verizon last year to help fill in its 4G footprint outside of metro areas. And it’s cannibalizing old 2G and 3G airwaves in the PCS band for more 4G capacity. T-Mobile’s main LTE network sits in the Advanced Wireless Service (AWS band) at 1700 MHz and 2100 MHz.

Instead of operating all three as different networks, though, Ericsson…