ABSTRACT
Contents 8.1 Introduction ................................................................................................................... 202 8.2 Survey on WSNs and Satellite Technologies .................................................................. 203
8.2.1 WSN Technologies: Standardization Activities ................................................... 203 8.2.1.1 IEEE 802.15.4 ...................................................................................... 204 8.2.1.2 ZigBee .................................................................................................. 204 8.2.1.3 6LoWPAN ........................................................................................... 205 8.2.1.4 WirelessHART ..................................................................................... 206
8.2.2 Satellite Technologies .......................................................................................... 206 8.2.2.1 Satellite Standards ................................................................................ 207 8.2.2.2 Satellite Systems and Constellations ..................................................... 208
8.3 Satellite-Based WSN Architectures ................................................................................ 209 8.3.1 Direct Access Architecture .................................................................................. 209
8.3.1.1 Single-Sensor-to-Satellite Model ............................................................210 8.3.1.2 Multisensors-to-Satellite Model .............................................................213
