A new rate coordination protocol for TCP and ABR congestion control

Author

Djemame, K. ; Kara, M.

Author_Institution

Sch. of Comput. Studies, Leeds Univ., UK

fYear

2000

fDate

2000

Firstpage

44

Lastpage

48

Abstract

The implementation of an agent-based algorithm to coordinate the congestion control algorithms of the transmission control protocol (TCP) and the ATM (asynchronous transfer mode) ABR (available bit rate) cell-oriented switching architecture is overviewed. A new parameter (CWNDACR) is derived to ensure that even when the ATM switch queues are indicating no congestion, it is the switch (and not the source) which should control the increment in the TCP source rates. The simulation results show that coordination at the edge of the network makes better use of the available bandwidth and improves the TCP´s performance over ATM ABR for a range of performance metrics such as the cell loss ratio, the packet retransmission ratio and the throughput

Keywords

asynchronous transfer mode; digital simulation; packet switching; software agents; telecommunication congestion control; transport protocols; ABR congestion control; ATM cell-oriented switching architecture; ATM edge devices/switches; ATM switch queues; CWNDACR; Internet; TCP; TCP performance; TCP source rates; agent-based algorithm; asynchronous transfer mode; available bandwidth; available bit rate; cell loss ratio; congestion control algorithms; packet retransmission ratio; performance metrics; rate coordination protocol; simulation results; throughput; transmission control protocol; Asynchronous transfer mode; Bandwidth; Communication system traffic control; Equations; Erbium; Feedback; Payloads; Propagation losses; Protocols; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Networks, 2000. (ICON 2000). Proceedings. IEEE International Conference on

Print_ISBN

0-7695-0777-8

Type

conf

DOI

10.1109/ICON.2000.875767

Filename

875767