Table 2 List of abbreviations
From: Energy-efficient hierarchical routing in wireless sensor networks based on fog computing
Abbreviations | Meanings |
|---|---|
WSNs | Wireless sensor networks |
CHs | Cluster heads |
MDC | Mobile data collector |
NS | Sensor node |
NF | Fog nodes |
NA | Advanced nodes |
\(A\) | Total number of sensor nodes |
\(P\) | Normal nodes in the network |
\(K\) | Fraction of advanced nodes |
\(E_{{\mathrm{f}}}\) | Initial energy of a normal node |
h | Energy multiple factor |
Npc | Present condition of N |
Nte | Type of environmental data sensed by N |
Nte | Set of environmental data being monitored |
\(k\) | Total number of events |
Nln | Location of NS |
Nct | Component of NS |
\(N_{{\mathrm{st}}}\) | Types of sensor nodes |
\(N_{{\mathrm{ch}}}\) | Sensor node’s hardware communication type |
App | Application of sensor nodes |
IA | Application instance |
\(A\) | Total nodes in the network |
\(C\) | Area covered by a cluster |
\(D\) | Type of advanced node |
\(F\) | Fog node |
\(\overline{N}_{{\mathrm{S}}}\) | Set of normal nodes |
\(\overline{N}_{{\mathrm{A}}}\) | Set of advanced nodes |
\(\overline{N}_{{\mathrm{F}}}\) | Set of fog nodes |