The conference seeks original submissions which were not published yet elsewhere. In order for a paper to be accepted, and subsequently included in the IEEE eXplore paper base, they need to meet certain requirements.
The papers are expected to report on novel developments, not published yet elsewhere, with a prospect for a tangible impact on the research area and, hopefully, a potential for practical implementations.
The need for the work done has to be established: why important, and who is going to benefit from it. It is important that the work is put in the framework of the works published by others, if relevant - outlining the differences, novelty, and arising benefits.
The clarity of the material presentation is very important for others to understand and appreciate the presented developments and results.