Multiplex communications – Communication over free space – Message addressed to multiple destinations
Reexamination Certificate
2011-05-10
2011-05-10
Pwu, Jeffrey (Department: 2478)
Multiplex communications
Communication over free space
Message addressed to multiple destinations
Reexamination Certificate
active
07940712
ABSTRACT:
The method and arrangement according to the present invention relates to scheduling and coding in communication systems utilizing automatic repeat request (ARQ) and/or multihop scheduling and forwarding. According to the inventive method the receiving nodes selectively stores received information, also overheard information, as a priori information and feed back information about their respective stored a priori information to a sending node. The sending node forms composite data packets by jointly encoding and scheduling multiple multicast data packets, and subsequently transmits the composite data packets to the receiving nodes. Upon receiving a composite data packet the receiving nodes uses their stored a priori information, comprising of regular multicast packets, or full or partly decoded composite packets comprised of regular multicast packets, in the process of extracting multicast data packets from the composite data packets.
REFERENCES:
Jolfaei, M. A. et al. “Effective Block Recovery Schemes ARQ Retransmission Strategies.” 5th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, 1994. Sep. 18-23, 2004, vol. 2, pp. 781-785.
Jolfaei, M.A. et al. “A New Efficient Selective Repeat Protocol for Point-to-Multipoint Communication.” IEEE International Conference on Communications, 1993. May 23-26, 1993, vol. 2, pp. 1113-1117.
Larsson, Peter et al. “Multi-User ARQ.” IEEE 63rd Vehicular Technology Conference, 2006 (VTC '06 Spring). May 7-10, 2006, vol. 4, pp. 2052-2057.
Tau, C.S. et al. “Performance Evaluation of the Loss-Collected Retransmission Scheme in Reliable Multicast Protocol.” IEE Proceedings—Communications. vol. 153, Iss. 3, pp. 376-382.
Yong, S. et al. “XOR Retransmission in Multicast Error Recovery.” IEEE International Conference on Networks, 2000 (ICON 2000), pp. 336-340.
Ali Farhad
Coats & Bennett P.L.L.C.
Pwu Jeffrey
Telefonaktiebolaget LM Ericsson (publ)
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