Multiplex communications – Wide area network – Packet switching
Patent
1992-04-06
1993-11-30
Chin, Wellington
Multiplex communications
Wide area network
Packet switching
H04J 316
Patent
active
052672433
ABSTRACT:
A data communications system wherein a plurality of stations each transmits data messages through a time-shared channel. In one embodiment of the invention, each data message is transmitted in either one of two alternative modes. In the first mode, a station transmits a data message at any time while in the second mode each station is assigned different times to transmit their data messages and transmission by that station is inhibited at other times. The mode of transmission is determined by a number of events. One such event is when a data message is successfully transmitted by a station and within a predetermined time interval thereafter that station has another data message to transmit. In another embodiment of the invention, a station is operative in the above-described first or second modes. The operative mode is modified to maintain a waiting or idle period between two successively transmitted data messages when the first of these two data messages has been successfully transmitted. In the first mode, this waiting period causes transmission of the second of the two successive data messages to be delayed until at least the expiration of the waiting period. In the second mode, this waiting period causes a station to delay transmission at one of its assigned times if such transmission does not maintain the waiting period.
REFERENCES:
patent: 1508870 (1924-09-01), Bennett
patent: 4689785 (1987-08-01), Toyonaga et al.
patent: 4718061 (1988-01-01), Turner
patent: 4774707 (1988-09-01), Raychaudhuri
patent: 5012469 (1991-04-01), Sardana
R. Binder, "A Dynamic Packet-Switching System for Satellite Broadcast Channels," Proceedings of the IEEE International Conference on Communications, San Francisco, Calif., pp. 41-1 through 41-5, Jun. 16-18, 1975.
T. Berger, N. Mehravari, D. Towsley and J. Wolf, "Random Multiple-Access Communication and Group Testing," IEEE Transactions on Communications, vol. COM-32, No. 7, pp. 769-779, Jul. 1984.
M. Sarraf and V. Li, "A Stable Multiple Access Scheme for Satellite Communications Networks", Proceedings of the IEEE-INFOCOM, Apr., 1986.
J. F. Hayes, Modeling and Analysis of Computer Communications Networks (New York: Plenum Press), 1984, p. 111.
A. S. Tanenbaum, Computer Networks (New Jersey: Prentice-Hall, Inc.), 1981, pp. 257-259 303-306.
I. Rubin, "Access-Control Disciplines for Multi-Access Communication Channels: Reservation and TDMA Schemes," IEEE Transactions on Information Theory, vol. IT-25, No. 5, Sep. 1979, pp. 516-536.
S. Koubias and G. Papadopoulos, "Presentation of a New Efficient Self-Adaptive Multiple Access Protocol" Proceedings of MELECON '83, Mediterranean Electrotechnical Conference, Athens, Greece, May 24-26, 1983, pp. A2.06-A2.07.
S. S. Lam, "Multiple Access Protocols," Computers Communications, vol. 1--Principles, Prentice-Hall, Inc., Englewood Cliffs, NJ, 1983, pp. 114-152.
J. E. Wieselthier and A. Ephremides, "Protocols of Multiple Access, (A Survey), and the IFFO Protocols, (A Case Study)" New Concepts In Multi-User Communication, edited by J. K. Skwirzynski, NATO Advanced Study Institutes Series, Series E: Applied Sciences, No. 43, Sigthoff & Noordhoff, The Netherlands, 1981.
I. Rubin, "Group Random-Access Disciplines for Multi-Access Broadcast Channels," IEEE Transactions on Information Theory, vol. IT-24, No. 5, Sep. 1978, pp. 578-591.
S. A. Koubias and G. D. Papadopoulos, "Further Results on the Performance Evaluation of the Split Channel Reservation Multiple Access Protocol ATP-2 for Local Area Networks," IEEE Transactions on Computers, vol. 37, No. 3, Mar. 1988, pp. 376-383.
AT&T Bell Laboratories
Chin Wellington
Padnes David R.
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