Fair scheduling of ATM cell transmissions during overscheduled c

Details Fair scheduling of ATM cell transmissions during overscheduled c Fair scheduling of ATM cell transmissions during overscheduled c

1997-12-19

2000-09-05

Nguyen, Chau

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

370395, 370468, H04L 1256

Patent

active

061153605

ABSTRACT:
A network hub and Asynchronous Transfer Mode (ATM) translator system (5) for use in a Local Area Network (LAN)-based communications system is disclosed. The network hub and ATM translator system (5) includes a host controller (10) that serves as the LAN hub, and which interfaces with a translator card (15) which includes a segmentation and reassembly device (12) in connection with SONET receive/transmit circuitry (20) that communicates with a transceiver (22) to transmit and receive ATM packet cells over a communications facility (FO). The translator card (15) also includes a scheduler (14) that includes a heap sort state machine (36) which maintains a sorted list of entries, in a heap fashion, in on-chip parameter memory (44) and off-chip parameter memory (18). The entries include, for each ATM channel, a channel identifier and a timestamp that indicates the time at which the next cell for the channel will be due for transmission. A due comparator (40) compares the timestamp of the root value in the heap (i.e., the channel with the next due cell) to a global time generated by a reference timer (38), and indicates to a source behavior processor (24) in the scheduler (14) that a cell is due for transmission. The scheduler than issues a transmit credit for the cell, and communicates this event with the SAR device (12) to effect the transmission as appropriate.

REFERENCES:
patent: 4757529 (1988-07-01), Glapa et al.
patent: 5313579 (1994-05-01), Chao
patent: 5812527 (1998-09-01), Kline et al.
patent: 5917822 (1999-06-01), Lyles et al.
patent: 5926459 (1999-07-01), Lyles et al.
patent: 6006270 (1999-12-01), Kobunaya

Affiliated with

Also associated with

Rating

Fair scheduling of ATM cell transmissions during overscheduled c does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fair scheduling of ATM cell transmissions during overscheduled c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fair scheduling of ATM cell transmissions during overscheduled c will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2219902