APMD: A fast data transmission protocol with reliability guarantee for pervasive sensing data communication.

In pervasive sensing data communication systems, it is significant to ensure data reliably and rapidly sent to the control center. Otherwise, laggard data transmission may result in vital loss. An adaptive persistent m data (APMD) transmission protocol is proposed to reduce delay with reliability guarantee for pervasive sensing data communication systems. In APMD transmission protocol, each data packet is sent for m (m≥1) times by sender at the first time of transmission. If the data packet cannot be received successfully for m times, sender will transmit this data packet again and wait for ACK sent back by receiver in the send and wait way. The next data packet will not be sent until this packet is sent successfully or the time of transmission reaches the maximum limit. The option of appropriate value of m is based on the energy situation, which guarantees high network lifetime. Both theoretical analysis and experimental simulation results indicate that the APMD protocol is better than the previous data transmission protocol. The delay can be reduced by 12.73%–14.78%, the energy utilization rate can be improved by about 35% compared to the SW-ARQ protocol, while the reliability increases slightly and the lifetime has no difference.