Title :
QoS guarantees for high-speed variable-length packet LANs
Author :
Saito, T. ; Aida, H. ; Aoki, T. ; Kishi, Y. ; Setthawong, P.
Author_Institution :
Fac. of Eng., Tokyo Univ., Japan
Abstract :
To be able to cope with the demand for multimedia traffic, a lot of research has been done on star-based, ring-based, and other shared-medium high-speed multimedia LANs. A lot of this research has been done on dual counter-rotating ring LANs. This is because the use of spatial reuse (removal of packets at their destination) in dual-ring LANs can result in a major increase in ring throughput. In addition, dual-ring LANs are less susceptible to failure. For star LANs, if the central repeater malfunctions, the whole network fails. However, because there is no central node in dual-ring LANs, the network will not fail even if a node malfunctions. The majority of dual-ring LAN research done so far has been concentrated on fixed-length slot LANs. This is because slot LANs are compatible with ATM and B-ISDN technology. In addition, the slot-waiting time, a problem in low-speed LANs, can be ignored. However, the authors think that variable-length packet LANs are more suitable for high-speed LANs than slot LANs. They consider the use of packet LANs in comparison with slot LANs for high-speed dual-ring LANs. In addition, they introduce the idea of semi-global fairness for dual-ring LANs and propose an algorithm for realizing such fairness
Keywords :
carrier sense multiple access; local area networks; multimedia communication; network topology; packet switching; telecommunication traffic; ATM; B-ISDN; CSMA/RN; QoS guarantees; algorithm; carrier sensed multiple access ring network; central repeater; dual counter-rotating ring LAN; dual-ring LAN; fixed length slot LAN; high speed variable length packet LAN; multimedia LAN; multimedia traffic; semiglobal fairness; star LAN; throughput; B-ISDN; Communication equipment; Data engineering; Delay; Ethernet networks; Local area networks; Multiaccess communication; Multimedia communication; Repeaters; Telecommunication traffic;
Conference_Titel :
Communications, Computers and Signal Processing, 1997. 10 Years PACRIM 1987-1997 - Networking the Pacific Rim. 1997 IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-3905-3
DOI :
10.1109/PACRIM.1997.620373