Title :
Improving the fairness of distributed-queue-dual-bus networks
Author :
Hahne, Ellen L. ; Choudhury, Abhijit K. ; Maxemchuk, Nicholas F.
Author_Institution :
AT&T Bell Lab., Murray Hill, NJ, USA
Abstract :
The fairness problems suffered by distributed-queue-dual-bus (DQDB) networks that span metropolitan areas are examined in detail. The problems arise because the network control information is subject to propagation delays that are much longer than the transmission time of a data segment. A rate control procedure is proposed that requires only a minor modification of the current DQDB protocol. In order to guarantee that a node acquires only 90% of the available slots, every time it inserts nine data segments into its local queue it inserts one extra request slot into its transmission queue. This lets an extra idle slot go by that was not requested by any downstream node
Keywords :
computer networks; protocols; queueing theory; DQDB protocol; MAN; distributed-queue-dual-bus networks; fairness problems; metropolitan area networks; rate control procedure; Access protocols; Communication networks; Communication standards; Communication system control; Laboratories; Network topology; Propagation delay; Resource management; Tiles; Urban areas;
Conference_Titel :
INFOCOM '90, Ninth Annual Joint Conference of the IEEE Computer and Communication Societies. The Multiple Facets of Integration. Proceedings, IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-8186-2049-8
DOI :
10.1109/INFCOM.1990.91247
