There is no standard for a thesis structure. Generally for the basis, you will have your Introduction Chapter, LT chapters explaining why we need a new architecture and identify the gaps, then the chapters that introduce your architecture, followed by chapters that demonstrate your solutions (e.g. simulation, experiments etc..) and then you conclude. Transitions between chapters/modules should be smooth like building blocks.
I think you can begin with an introducion of the issues you want to tackle in your work and demonstrate that IoT is the right solution. The following chapter can shows eventually related works about the issues you explained in the introduction. Then a chapter that explain in details what IoT is and the open issues. Than, a chapter that shows your solution and finally, the conclusions. At the end, references, list of tables / figures and so on.
The standard thesis structure has four parts: an introduction, the background, the core, and a synthesis.
The introduction explains what the thesis is about: the problem that the thesis is concerned with, the aims and scope, and the thesis structure.
The background is the knowledge required before a reader can understand your research: relevant history, context, current knowledge, theory and practice, and other researchers’ views. In the background, your purpose is to position your study in the context of what has gone before, what is currently taking place, and how research in the area is conducted. It might contain a historical review.
The core concerns your own work: your propositions or hypotheses, innovations, experimental designs, surveys and reviews, results, analysis, and so on.
The synthesis draws together your contribution to the topic. It will usually contain a discussion, in which you critically examine your own results in the light of the previous state of the subject as outlined in the background, and make judgments as to what has been learnt in your work; the discussion may be a separate chapter, or may be integrated with the detailed work in the core.
Finally, it is where you summarize the discussion and evaluation to produce conclusions. These should respond directly to the aim of the work as stated in the introduction. The structure of the core varies greatly from discipline.