Luigi Fratta (Politecnico Di Milano) - ADHOC-MAC: an efficient, reliable, MAC protocol for ad-hoc networks

Professor
Dipartimento di Elettronica e Informazione
Politecnico di Milano
Piazza Leonardo da Vinci, 32
20133 MILANO
Phone: +39-02-2399-3578
Fax :+39-02-2399-3413
Email. Fratta@elet.polimi.it

Date: february 18th 2004

Abstract

Ad-hoc networking, though an attractive solution for many applications,still presents many unsolved issues, such as flexible and prompt access, QoS, and efficient broadcast service. In this talk I will present ADHOC-MAC, a MAC architecture able to solve the above issues in environments with no power consumption limitation, such as in networks for inter-vehicle communications. This new architecture is based on a completely distributed access technique, RR-ALOHA, capable to dynamically establish on a slotted/framed structure a single-hop broadcast channel for each active terminal on the network. Though the proposed MAC protocol uses a slotted channel, it can be adopted to operate on the physical layer of different standards, including the UMTS Terrestrial Radio Access TDD, and the IEEE 802.11. The protocol feasibility and some basic performance figures will be discussed to prove the effectiveness of the protocol in the inter-vehicle communication scenario.