Orozco-Barbosa, L.,Hirzalla, Nael B.2009-03-232009-03-2319931993Source: Masters Abstracts International, Volume: 33-02, page: 0610.9780315896246http://hdl.handle.net/10393/6800http://dx.doi.org/10.20381/ruor-11454In this thesis, we propose two novel congestion control mechanisms, specially designed for high-speed internetwork systems. These systems consist of a high-speed network which interconnects a few low-speed LANs. Proper coupling of subnetworks having a large difference in transmission speeds has been identified as one of the major challenges to overcome. The design of these control mechanisms is done by keeping in mind that a fair and simple control mechanism is necessary when dealing with high-speed communications systems. A performance evaluation of both mechanisms are carried out by simulation. The first mechanism is suitable for short-haul networks where information exchange can be performed quasi-instantaneously. The second mechanism is an open loop control to be used in systems where the ratio of the propagation time to the packet or cell transmission time is relatively high.131 p.Engineering, Electronics and Electrical.Thesis