Faculty of Engineering and Natural Sciences
Protocol Architectures for Energy Efficient Real-Time Data Communications in Mobile Ad Hoc Networks
University of Rochester, NY, USA
The challenge in the design of protocol architectures for Mobile Ad Hoc Networks (MANETs) is to efficiently convey information within a dynamic connected set of mobile limited-range limited-energy radios without the support of any infrastructure. Since a MANET is a dynamic, distributed entity, the optimal control of such a system should also be dynamic and adaptive. The global optimal solution for the coordination of a MANET (i.e., centralized control) can be achieved by continuously monitoring the global network status, which is not scalable, due to the overhead required to obtain such information. Although distributed coordination is realizable and practical, due to the lack of reliable coordination, its performance becomes unstable as the network conditions get harsher and it cannot avoid the waste of valuable resources such as bandwidth and energy.
A protocol architecture for MANETs that coordinates channel access through an explicit collective decision process based on available local information will outperform completely distributed approaches under a wide range of operating conditions without sacrificing the practicality and scalability of the architecture, unlike centralized approaches. In this talk, I will present the Time Reservation using Adaptive Control for Energy Efficiency (TRACE) family of protocol architectures that achieve such coordinated channel access in a distributed manner for real-time data communications in MANETs. Extensive simulations and theoretical analysis have shown that the TRACE protocols are capable of achieving high system performance without sacrificing robustness and quality of service.
Bülent Tavli received the B.S. and M.S. degrees in electrical and electronics engineering in 1996 from Middle East Technical University, Ankara, Turkey and in 1998 from Baskent University, Ankara, Turkey. He received the M.S. and Ph.D. degrees in electrical and computer engineering in 2001 and 2005 from the University of Rochester, Rochester, NY. He has been working as a post-doctoral fellow at the University of Rochester since 2005. His research interests lie in the area of wireless communications and networking, ad hoc and sensor networks, signal and image processing, and biomedical ultrasound.
August 18, 2006, 10:40, FENS G035