do you know whats on the other side of that door that you are trying to get through? A dozen hungry lions that will eat you as soon as you step inside.
Your predicament is like them saying they want a lion tamer, and you desperately trying to show them that you can be a lion tamer. If you succeed in making them believe that, then they will happily set you amongst the lions. And you wont tame them, because you really know nothing about lions at all. They will eat you.
Im amazed that you seem to want to persevere with this honestly. You are not going to find a detailed plan on rolling out a wimax network on an internet forum. Are you applying to actually be the project manager of this project?? Or are you applying for a junior roll within the larger organisation? If this is the latter, you could hazzard an attempt at keeping your plan high-level
ie. Initation / Planning / Implementation / Closeout
What goes into each of those areas for this kind of project? Feasibility study, environment scanning, budgeting, rfp to contractors, rfp selection, project scoping, project team formation, technical design of solution, design review, design approval, procurement of equipment, delivery to sites, assembly, testing, go-live, documentation, support update, review session, project sign-off, handover to support.
Good luck. You shall need it.