Method of reducing retransmission of data frame and receiving node therefor
AssigneesSamsung Electro-Mechanics Co., Ltd., Korea University Research and Business Foundation
InventorsJoun Sup Park, Chul Gyun Park, Sang Heon Pack, Jae Duck Ko
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Abstract
A method includes continuously receiving N data frames encoded from K source data packets by an erasure coding method; checking for errors in the received N data frames; and transmitting an acknowledge (ACK) message informing that the source data packets are capable of being restored, when the number (R) of data frames not containing errors is equal to or greater than the number (K) of source data packets, and transmitting an ACK message including the number (X) of data frames for which retransmission is to be requested when the number (R) of data frames not containing errors is less than the number (K) of source data packets, as a result of the checking.
Claims8
A method of reducing a retransmission of a data frame, the method comprising:
- continuously receiving, in a communicating module, data frames encoded from source data packets by an erasure coding method;
- checking, in an error checking module, for errors in the received data frames;
- and
- transmitting, in a controlling module, an acknowledge (ACK) message informing that the source data packets are capable of being restored, when a number (R) of data frames not containing errors is equal to or greater than a number (K) of source data packets, and transmitting an ACK message including a number (X) of data frames for which retransmission is to be requested when the number (R) of data frames not containing errors is less than the number (K) of source data packets, as a result of the checking,
- wherein the number (X) of the data frames for which retransmission is to be requested satisfies K−R<X<N−R, where N indicates a number of the encoded data frames, R indicates the number of the data frames not containing errors, and K indicates the number of the source data packets.
A receiving node for reducing a retransmission of a data frame, the receiving node comprising:
- a communicating module continuously receiving data frames encoded from source data packets by an erasure coding method;
- an error checking module checking for errors in the received data frames;
- and
- a controlling module transmitting an acknowledge (ACK) message informing that the source data packets are capable of being restored, when a number (R) of data frames not containing errors is equal to or greater than a number (K) of source data packets, and transmitting an ACK message including a number (X) of data frames for which retransmission is to be requested when the number (R) of data frames not containing errors is less than the number (K) of source data packets, as a result of the checking,
- wherein the number (X) of the data frames for which retransmission is to be requested satisfies K−R<X<N−R, where N indicates a number of the encoded data frames, R indicates the number of the data frames not containing errors, and K indicates the number of the source data packets.
Dependencies are inferred from the claim text.