Table 1 IDMA-based cooperative partial-packet-recovery protocols.
From: IDMA-based cooperative partial packet recovery: principles and applications
Phase I | The sources send packets to the destination, the relays can listen the transmission between the sources and destination. |
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Phase II | The destination checks whether the received packets have an error or not. If the error is detected, the destination feeds back a retransmission request message. Otherwise, the destination broadcasts an ACK message, and the system goes back to Phase I. |
Phase III | If a request message is feeded back by the destination, the relay performs the partial packet retransmission with IDMA. If no error go to Phase I; otherwise keep the partial packet retransmission in Phase III until the maximum number of retransmission is reached. |