wireless networks research papers
Wireless is always a good topic... In my opinio too good of a topic, almost everyone had studied them, so it will be pretty easy to find information about them... like a full mesh wireless network... i think that would be interesting.
I am currently working in a Data Center, other hot topic is security, in all levels, PC and network security, also you can research something in the field of availability, how to obtain high availability services and networks, something the closest to 99.9999% to a low cost.
Maybe something in the field of data protection, like building and administering betworks dedicated to backup servers, and not use the production network, like some recomendations and best practices on that field...
If i think of something else i'd let you know