Network interface having adaptive transmit start point for each

Details Network interface having adaptive transmit start point for each Network interface having adaptive transmit start point for each

1998-06-17

2000-07-25

Pan, Daniel H.

Electrical computers and digital data processing systems: input/

Input/output data processing

Data transfer specifying

370232, 370253, 710 52, G06F 1340, G06F 1320

Patent

active

06094692&

ABSTRACT:
A network interface transmits data packets between a host computer and a network and includes a first in first out (FIFO) buffer memory with an adaptive transmit start point determined for each data packet. The network interface received data packets from the host computer via a peripheral component interconnect (PCI). A FIFO control determines the byte length of each data packet, measures the minimum fill time indicating the time necessary to fill the FIFO buffer memory with a predetermined minimum amount of data necessary before transmission by the FIFO buffer memory, and calculates the time to fill the FIFO buffer memory with each packet based on the determined length and the measured minimum fill time. The time to empty the packet from the FIFO buffer memory is also calculated based upon the length of the packet and predetermined network transmission rates. If the time to empty the packet from the FIFO buffer memory is greater than or equal to the time to fill the FIFO buffer memory, the transmit start point is set to the predetermined minimum amount, otherwise the transmit start point is adjusted in accordance with the difference in time between filling and emptying the FIFO buffer memory with the packet, a FIFO fill rate based on the measured minimum fill time, and a coefficient that accounts for latencies in the PCI bus. The network interface thus provides an optimal transmit start point for each data packet, minimizing latency and underflow conditions during network transmission.

REFERENCES:
patent: 5058110 (1991-10-01), Beach et al.
patent: 5136582 (1992-08-01), Firoozmand
patent: 5138615 (1992-08-01), Lamport et al.
patent: 5159447 (1992-10-01), Haskell et al.
patent: 5210479 (1993-05-01), Firoozmand
patent: 5257258 (1993-10-01), Birman et al.
patent: 5315580 (1994-05-01), Phaal
patent: 5434872 (1995-07-01), Petersen et al.
patent: 5859980 (1999-01-01), Kalkunte
AMD, AM79C970 PCnet.sup..TM. -PCI Single-Chip Ethernet Controller for PCI Local Bus, Jun. 1994, pp. 1-868-1-1033.

Affiliated with

Also associated with

Rating

Network interface having adaptive transmit start point for each does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Network interface having adaptive transmit start point for each , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Network interface having adaptive transmit start point for each will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1343740