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Table 3 Parameters related to the calculation

From: An adaptive retransmit mechanism for delay differentiated services in industrial WSNs

NotationDescription
cPersistent transmission times for the first time
nNumber of total nodes in network
γh(δ)The maximum number of retransmissions of hop h
\( {e}_p^t,{e}_p^r \)Energy consumption of node for receiving and sending a data packet respectively
\( {e}_A^t,{e}_A^r \)Energy consumption of node for receiving and sending an ACK respectively
ωiData E2E delay of node i in ARM-DDS protocol
\( {D}_{\xi, i}^{k,t} \),\( {X}_{\xi, i}^{k,t} \)Number of node i for sending and receiving data packets in SW-ARQ protocol respectively
\( {\mathrm{W}}_i^t,{\mathrm{W}}_i^r \)Network delay
\( {S}_h^{send} \),\( {S}_h^{rec} \)Number of hop h for sending and receiving data packets in ARM-DDS protocol respectively
\( {S}_h^{AS} \),\( {S}_h^{AR} \)Number of node i for sending and receiving data packets in ARM-DDS protocol respectively
kData stream number, indicating different data streams
A constant less than the radius