Table 3 Parameters related to the calculation
From: An adaptive retransmit mechanism for delay differentiated services in industrial WSNs
Notation | Description |
|---|---|
c | Persistent transmission times for the first time |
n | Number 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 |
ωi | Data 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 |
k | Data stream number, indicating different data streams |
∆ | A constant less than the radius |