Multiplex communications – Wide area network – Packet switching
Patent
1988-07-29
1991-04-30
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 852, 370 941, 370 951, 3701041, H04J 316
Patent
active
050124692
ABSTRACT:
A class of adaptive hybrid multiple access protocols for a single channel, time division communications network dynamically switches among contention (Aloha), reservation, and fixed assignment (TDMA) protocols as a function of the traffic on the channel. This class of protocols is referred to as "Aloha-Reservation-TDMA" or "ART" class protocols. Within the ART class, a subclass of protocols is defined for satellite communication networks. This subclass is referred to as "Adaptive Satellite Hybrid Access" or "ASHA," and two examples of protocols within the ASHA subclass are described to show the viability of the ART class protocols. These protocols are referred to as ASHA1 and ASHA2. Both the ASHA1 and ASHA2 protocols combine the features of S-ALOHA, TDMA-Reservation and TDMA protocols. The ASHA1 protocol transmits reservation information when the Aloha protocol is selected, but the ASHA2 protocol does not. An Aloha/Reservation adaptive hybrid protocol is described in which the switch from the Reservation protocol to the Aloha protocol occurs when a reservation queue has been clear for a predetermined non-zero number of time slots. A Reservation/TDMA adaptive hybrid protocol is described in which the switch between the Reservation protocol and the TDMA protocol occurs when a predetermined number of stations on the network have transmitted information packets within a window. An Aloha/TDMA adaptive hybrid protocol is also described in which the switch from the Aloha protocol to the TDMA protocol occurs when a predetermined number of information packets have collided within a window.
REFERENCES:
patent: 4504946 (1985-03-01), Raychaudhuri
patent: 4574378 (1986-03-01), Kobayashi
patent: 4688217 (1987-08-01), Ishi et al.
patent: 4736371 (1988-04-01), Tejima et al.
patent: 4745599 (1988-05-01), Raychaudhuri
patent: 4766591 (1988-08-01), Huang
patent: 4773065 (1988-09-01), Kobayashi et al.
patent: 4774707 (1988-09-01), Raychaudhuri
Borganovo and Fratta, "SRUC: A Tech. for Packet Trans. on Mul. Access Chs.," Proc. Int. Conf. Comput. Commun., Kyoto Japan, pp. 601-607, 9/78.
Tasaka and Ishida, "Perf. Analysis of SRUC Protocol with GBN ARQ Scheme for Satellite Broadcast Chs.," Conf. Proc. IEEE Globecom., pp. 349-354, 1984.
Tasaka, "Multiple-Access Protocols for Satellite Packet Comm. Networks: A Perf. Comp.," Proc. IEEE, vol. 72, No. 11, pp. 1573-1582, 11/84.
Tasaka, "Perf. Analysis of Multiple Access Protocols," The MIT Press, Cambridge, Mass., chs. 7 and 9, 1986.
Lee and Mark, "Comb. Rand./Res. Access for Packet Sw'd. Trans. over a Satellite with On-Board Proc.: Pt. I-Global Beam Satellite," IEEE Trans. Commun., vol. COM-31, No. 10, pp. 1161-1171, 10/83.
Suda, Miyahara and Hasegawa, "Perf. Eval. of an Int. Access Scheme in a Satellite Com. Ch.," IEEE J. on Sel. Areas in Commun.-Spec. Issue on Dig. Satellite Comms., vol. SAC-1, No. 1, pp. 153-164, 1/83.
Binder, "A Dynamic Packet-Sw'ing Sys. for Satellite Broadcast Chs.," Conf. Proc. IEEE ICC, pp. 41.1-41.5, 1975.
Balagangadhar and Pickholtz, "Analysis of a Res. Mult. Access Tech. for Data Trans. Via Satellites," IEEE Trans. Commun., vol. COM-27, No. 10, pp. 1467-1475, 10/79.
Hsu Alpus H.
McKinley Martin J.
Olms Douglas W.
LandOfFree
Adaptive hybrid multiple access protocols does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adaptive hybrid multiple access protocols, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive hybrid multiple access protocols will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-646439