A new practicable and feasible networking policy was proposed

called one zone multi-PAN （personal area network[1]）. A two-level abstract model of LS-WSN was proposed. Using BeeStack[2]

which was a commercial network- ing protocol that complies with ZigBee specification[3]

a prototype system of LS-WSN was constructed. Theoretically

a PAN can support 65 536 nodes. Thus

the size of our LS-WSN could be expanded up to 16 times compared to that of a PAN. Experiences show that the quality of service （QoS） of LS-WSN can be guaranteed. Furthermore

analysis shows that the network management

the data fusion

and the performance can be also improved.