Engadget - What's four pounds, rugged and essential for the smartphone toting soldiers of the future? Why it's a portable LTE network in a box, of course. BTS and Radisys recently demoed their CoreTx and Trillium products, which may one day bring 4G connectivity to dangerous spots like disaster areas and battlefields. BTS already delivers 3G to areas of Afghanistan and is now working on this upgraded system with support for both LTE and HSPA+. You'll find a few more details in the PR after the break.