An Empirical Study of ubiquitous infrastructure to take advantage of the directivity of the antenna

Grant-in-Aid for Scientific Research of MEXT (FY 2011 - FY 2005)

[Abstract]

　Wireless ad hoc networks have been attracting a great deal of attention because they can be built with mobile terminals without any fixed infrastructure. Smart antennas which can control beam forming are expected to enhance scalability in ad hoc networks since they improve spatial and temporal reuse. This project develops Medium Access Control (MAC) protocols and routing protocols using directional antennas. Especially, we developed SWAMP and derived protocols for medium access control and several routing protocols. We also developed a protocol testbed called UNAGI/ESPAR (Ubiquitous Network testbed with an Adaptively Gain-controlled antenna for performance Improvement / ESPAR ) for wireless ad hoc networks, which enables the investigation of directional protocols in a real environment for empirical discussion on directional protocols.