There have been tremendous advances in wireless & mobile communications in recent years, including wireless radio techniques, networking protocols, and mobile devices. This PhD research project will investigate the novel efficient algorithms of distributed admission/rate/power control and QoS-aware resource scheduling for next-generation broadband wireless networks, and possibly demonstrating those designed techniques on the real wireless testbed. Specifically, medium access control and cross-layer adaptation for single device and collaborative coordination among a group of mobile devices will be studied. The significance of this research lies in its originality in that there lacks adequate study in the cross-layer based resource allocation and distributed mobile device coordination.
The IEEE 802.11n latest draft attains rates of 100+ Mbps by introducing innovative enhancements at the PHY and MAC, e.g. MIMO and frame aggregation, respectively. However, frame aggregation's performance adheres due to the EDCA scheduler's priority mechanism from IEEE 802.11e, resulting in the network's poor overall performance. As high priority flows have poor channel utilization because of their traffic characteristics, the low priority flows throughputs can be amerced even further.
