ISSN : 1796-2021
Volume : 4    Issue : 1    Date : February 2009

Fluctuation Request: A Fast Retransmission Scheme in Power Line Communication Network
Jianfeng Chen
Page(s): 34-40
Full Text:
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Broadband power line communication (BPLC) access technology provides high speed data
transmission capability for multimedia service in digital homes. However, because of the frequency
and time-varying characteristics of the power line channel, unpredictable packet loss happens
during service transmission; in order to guarantee the requirement of QoS and improve the
throughput performance, an effective approach is to retransmit the lost packet by the NACK
message indication. This paper proposes a fast retransmission method named fluctuation request,
wherein the internal node located along the transmission path is invited into the work of
retransmission. The algorithm is designed to work in the system suffered with burst or constant
packet loss. Comparing with the traditional method that totally relies on the source node for the data
retransmission, the proposed mechanism can reduce the retransmission step and improve the
average target packet hit rate for both unicast and multicast services.

Index Terms
Power Line Communication, retransmission, NACK