A comparative evaluation study of the performance of DQRAP and DQDB in metropolitan area networks
Distributed queueing random access protocol (DQRAP) is a multiple access protocol with packet reservation scheme using contention minislots. DQRAP is an MAC protocol that offers a throughput equal to the offered traffic up to one with a delay smaller than that of other multiple access protocols. The performance of DQRAP approaches that of an ideal M/D/1 queueing system. Distributed queue dual bus (DQDB) is the IEEE 802.6 standard for metropolitan area networks. DQDB has a very good performance using two buses to transfer data. This paper presents (a) a description of DQDB, (b) a description of DQRAP, (c) a performance comparison between DQDB and DQRAP and (d) an implementation comparison between DQDB and DQRAP.
metropolitan area network distributed queueing random access protocol distributed queue dual bus simulation performance analysis