  There has been a tremendous effort in improving wireless LAN for supporting
the demanding multimedia application. Many new protocols or ideas have been
proposed and proved by using a mathematical model or running a simulation
program. That is satisfactory but these proposed designs might not work in the
real world situation. Testbed is an option to alleviate this gap and present
the opportunity to see the real problem and ensure that the design works. A
framework architecture for building a testbed to test a new concept or design
is presented in this paper. The framework is designed in the modularity style
in such a way that can be easily exchanged or modified. A testbed based on the
framework that implements the polling based mechanism has been created and the
results have shown that the QoS of the real time traffic can be maintained in
the presence of the high non-real time traffic.
