Multiplex communications – Wide area network – Packet switching
Patent
1994-04-28
1995-10-03
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
H04L 1256
Patent
active
054558255
ABSTRACT:
A switch for digital communication networks includes a queuing system capable of implementing a broad class of scheduling algorithms for many different applications and purposes, with the queueing system including means for providing numerical tags to incoming cells or packets, the values of the tags being calculated when incoming cells or packets arrive at the switch. A queue and search module is provided to select cells or packets for transmission based on these tags. The combination of the tags and the queue and search module enables simple and fast implementations of a wide variety of scheduling algorithms, including algorithms for supporting communication traffic with real time requirements, continuous media such as audio and video, and traffic requiring very fast response. Furthermore, multiple classes of traffic are supported in a single network switch, each class having its own scheduling algorithm and policy. The queue and search module is designed for VLSI implementation, and in one embodiment supports an ATM switch with 16 ports, each port operating at 622 megabits per second.
REFERENCES:
patent: 5208805 (1993-05-01), Ochiai
Ghosh Abhijit
Lauer Hugh
Shen Chia
Mitsubishi Electric Research Laboratories
Olms Douglas W.
Tendler Robert K.
Ton Dang
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