This process document is excellent, and I'm sorry I missed her first work on the subject. (The technical aspects of Bronze Age textiles really fascinate me, and I've kept up with some of the reproduction efforts.) This article makes it sound like the technique is a form of "Bedouin weaving," where there are supplementary warps of various colors and for each pass of the weft you select and raise the specific one you want to show on the front side. The technique is marked by one-sidedness, with long warp floats appearing on the back side of the textile. Great for bandweaving where you apply the band to something else.