Title :
Improve TCP performance over ATM-UBR with FED+
Author :
Chin, Yoon-Tze ; Handa, Shiro ; Sasamori, Fumihito ; Oshita, Shinjiro
Author_Institution :
Fac. of Eng., Shinshu Univ., Nagano, Japan
Abstract :
We had previously proposed a fuzzy logic-based buffer management scheme (BMS) called fuzzy early detection (FED), designed to improve transmission control protocol (TCP) performance over the unspecified bit rate service of asynchronous transfer mode networks. Since a weakness in FED was discovered later, we present a refined version of it named FED+ here. Maintaining the design architecture and algorithm of FED, FED+ further adopts per virtual connection accounting to achieve its design goals. The effects of TCP implementation, TCP maximum segment size, switch buffer size and network propagation delay on FED+ performance are studied through simulation. Its performance is then compared with those of pure early packet discard, P-random early detection and FED. Our evaluations show that FED+ is superior to the others if the issues of efficiency, fairness, robustness, buffer requirement and the ease of tuning control parameters of a BMS are considered collectively.
Keywords :
adaptive control; asynchronous transfer mode; fuzzy logic; telecommunication control; transport protocols; FED+; P-random early detection; UBR; asynchronous transfer mode networks; buffer management scheme; design architecture; fuzzy early detection; fuzzy logic; network propagation delay; performance evaluation; robustness; switch buffer size; transmission control protocol; unspecified bit rate; virtual connection; Algorithm design and analysis; Asynchronous transfer mode; Bit rate; Fuzzy control; Fuzzy logic; Nonlinear control systems; Optimal control; Protocols; Robust control; Switches;
Conference_Titel :
Fuzzy Systems, 2003. FUZZ '03. The 12th IEEE International Conference on
Print_ISBN :
0-7803-7810-5
DOI :
10.1109/FUZZ.2003.1206591