To　localize,　track　and　trace　critical　assets　and　first　responders　for　remote　emergency　management　are　primary　needs　after　a　catastrophic　event.　In　disaster　areas,　however,　it　is　likely　that　the　existing　terrestrial　communication　network　and　the　power　grid　will　be　cut　off.　Therefore,　a　reliable　asset　tracking　system　should　be　independent　of　those　terrestrial　networks,　especially　in　terms　of　communication.　This　paper　explores　the　development　of　a　reliable　low　power　local　wireless　communication　network　for　portable　GNSS-based　positioning　sensors　and　a　centralized　recording　unit,　as　part　of　the　independent　communication　network.　The　wireless　sensors　network　is　based　on　the　ZigBee　standard　protocol　and　the　IEEE802.15.4　compliant　transceiver　CC2530　from　Texas　Instrument.　The　network　features　low　cost,　low　power,　mesh　topology,　high　reliability　and　high　security.　Copyright　©　Inria　(2014).