Patent ID: 9584229
Date: 2017-02-28
CPC Classifications: H04B,H04L

Claim:
1. A data retransmission method, comprising: monitoring and decoding, by a relay node, each data packet that is sent by a source node for a first time in a go-back-N automatic repeat request (GBN-ARQ) mode to a destination node; storing a copy of a successfully decoded data packet by the relay node; monitoring, by the relay node, a response message to each data packet between the destination node and the source node, wherein the response message is returned by the destination node to the source node; deleting, by the relay node and in response to the response message being a reception negative acknowledgment message, all stored copies of data packets that are previous to a data packet that corresponds to the reception negative acknowledgment message; and sending, by the relay node to the destination node and in response to the response message being the reception negative acknowledgment message, the copy of the data packet that was successfully decoded, wherein the copy of the data packet corresponds to the reception negative acknowledgment message, and wherein the copy of the data packet is sent in a first time slot of a first frame, the first frame including a copy of the data packet re-sent by the source node in a second time slot of the first frame different from the first time slot.