Abstract:
Current DiffServ architecture lacks mechanisms
for network path discovery with specific service
performance. It is recommended in RFC 2990 [I]
that an admission control function be defined which
can determine whether to admit a service
differentiated flow along the nominated network
path, This paper proposes Fair Intelligent
Congestion Control over DiffServ (FICC-DS) for
addressing this issue. The FICC-DS scheme involves
a resource discovery (RD) loop, a fair share
estimation algorithm. a congestion condition
estimation algorithm, and a source admission
control algorithm, Simulation results demonstrate
that the FICC-DS achieves high network resource
utilization and fairness performance than the
standard DiffServ. In particular, the FICC-DS
virtually eliminates the unfairness properties of TCP
traffic class with respect to round trip time (RTT). It
also allocates bandwidth fairly between TCP and
UDP classes when they share a link over a DiffServ
region.
