Multiplex communications – Wide area network – Packet switching
Patent
1995-02-28
1996-09-24
Marcelo, Melvin
Multiplex communications
Wide area network
Packet switching
370 941, 370108, H04J 326
Patent
active
055597963
ABSTRACT:
A network for transferring packet data in a frame structure, preferably mixed with isochronous data. The frame structure is a continuously repeating structure, with each frame having a number of time slots. Certain ones of the time slots are available for transmitting packet data. The packet data is re-timed, e.g., by using a FIFO to output the data nibble-wise as required by the frame structure. Information about variability in delays at the transmitting end is sent to the receiving end. The receiving end uses the information to eliminate the variability, such as by a variable delay FIFO, thus restoring/recreating the original packet and IFG timing. Preferably, the frame structure is translated to and from a packet structure to permit the present invention to be used with previously available packet circuitry such as a media access controller and a hub repeater circuit.
REFERENCES:
patent: 4220816 (1980-09-01), Howells et al.
patent: 4258434 (1981-03-01), Glowinski et al.
patent: 4412324 (1983-10-01), Glowinsky et al.
patent: 4530088 (1985-07-01), Hamstra et al.
patent: 4549292 (1985-10-01), Isaman et al.
patent: 4587650 (1986-05-01), Bell
patent: 4637014 (1987-01-01), Bell et al.
patent: 4782485 (1988-11-01), Gollub
patent: 4845609 (1989-07-01), Lighthart et al.
patent: 4858232 (1989-08-01), Diaz et al.
patent: 4876683 (1989-10-01), Suzuki
patent: 4961188 (1990-10-01), Lau
patent: 5001707 (1991-03-01), Kositpaiboon et al.
patent: 5007045 (1991-04-01), Tsuzuki
patent: 5065398 (1991-11-01), Takashima
patent: 5138440 (1992-08-01), Radice
patent: 5208807 (1993-05-01), Gass et al.
patent: 5406559 (1995-04-01), Edem et al.
patent: 5440556 (1995-08-01), Edem et al.
Integrated PBX Systems, An NCC State fo the Art Report, The National Computing Centre Limited, 1987.
ISDN Basic Rate Interface System Design Guide, Telenetworks document, Aug. 1989.
ISDN Primary Rate Interface System Design Guide, Telenetworks document, Jul. 1989.
Draft Supplement to IEEE STD 802.3 CSMA/CD Access Method and Physical Layer Specifications, The Institute of Electrical and Electronic Engineers, Inc. Nov. 15, 1989.
Irube et al., "Integrated Information and Communication System for Business Networks", Hitachi Review, 40(3):241-247, 1991.
HMUX ERS "FDDI-II Hybrid Multiplexor" Rev. 2.4, 1991.
IBM Corporation, "Task Order", pp. 6-7, 1992.
DP8390, "Network Interface Controller: An Introductory Guide", LAN Databook, pp. 206-213, 1992.
DP83932B, "Systems-Oriented Network Interface Controller", LAN Databook, pp. 288-383, 1992.
DP83950A, "Repeater Interface Controller", LAN Databook, pp. 3-75, 1992.
DP83950EB at IEEE 802.3, Multi-Port Repeater Evaluation Kit, LAN Databook, pp. 75-87, 1992.
IEEE 802.9 Draft Standard Integrated Services (IS) LAN Interface at the MAC and PHY Layers, Institute of Electrical and Electronics, Nov. 1992.
"National Proposes Isochoronous Ethernet", Electronic News, vol. 38, No. 1940, p. 19, Nov. 1992.
"IBM's Multimedia Venture: Opportunity for its Hardware?", vol. 38, No. 1930, p. 1, Sep. 1992.
C. A. Gallagher, IEEE 802.9: A multi-Service LAN Interface, Second IEEE National Conference on Telecommunications, Apr. 1989, York GB, pp. 173-178.
P. Martini, et al., "Real-Time Traffic in FDDI-II, Packet Switching vs. Circuit Switching", IEEE Infocom 1991, vol. 3, Apr. 1991, Bal Harbour, U. S., pp. 1413-1420.
F. E. Ross, et al., "FDDI-A Lan Among Man's Computer Communications Review", vol. 20, No. 3, Jul. 1990, New York, U.S., pp. 16-31.
T. Peatfield, "Compatibility with CSMA/CD Network System Topology", IEEE-802.9-94/12, Jan. 18, 1994.
Edem Brian C.
Worsley Debra J.
Marcelo Melvin
National Semiconductor Corporation
LandOfFree
Delay control for frame-based transmission of data does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Delay control for frame-based transmission of data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Delay control for frame-based transmission of data will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1935080