Data communication method and system

Details Data communication method and system Data communication method and system

1993-01-06

1995-07-11

Baker, Stephen M.

Excavating

H04L 116

Patent

active

054327989

ABSTRACT:
A method of multipoint communications utilizes a protocol in which data messages (10) sent by a primary source are multicast to a plurality of secondary receiving stations (S.sub.1 . . . S.sub.n). Each message packet contains a control field comprising a station identifier code (14) and an instruction for the specified station to acknowledge a predetermined number of messages. Each successive message packet comprises a station identifier code which differs in an alterable set cyclical sequence. Thus, acknowledgements of correct receipt of data are taken in a cycle of length L such that in a space of L messages each receiver must acknowledge at least once. In this way the primary source need only keep the L latest messages because all the stations have acknowledged correct receipt of at least up to the current message minus L. The multipoint communications method uses a protocol which can be applied to existing communications networks.

REFERENCES:
patent: 4725834 (1988-03-01), Chang et al.
patent: 4888767 (1989-12-01), Furuya et al.
patent: 4914654 (1990-04-01), Matsuda et al.
patent: 4951281 (1990-08-01), Muto et al.
Calo, S., et al, "A Broadcast Protocol for File Transfers to Multiple Sites", IEEE Trans. on Communications, vol. COM-29, No. 11, Nov. 1981, pp. 1701-1707.
Gopal, I., et al, "Point-to-Multipoint Communication Over Broadcast Links", IEEE Trans. on Communications, vol. COM-32, No. 9, Sep. 1984, pp. 1034-1044.
IEE Proceedings of the Institution of Electrical Engineers, vol. 133 No. 3, part F. Jun. 1986, pp. 271-276. G. Benelli: "Go-back-N ARQ scheme with buffer at the receiver". p. 271.
IBM Technical Disclosure Bulletin, vol. 26, No. 108, Mar. 1984, pp. 5447-5450, New York, US; I. S. Gopal et al: "Full-memory go-back-N protocol for point-to-multipoint communication".

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