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In this paper, we focused on the scheme which supports mobility for ZigBee sensor nodes. We adopt NEMO protocol to provide mobility for low power ZigBee sensor nodes. Therefore, we propose NEMO based ZigBee Mobile Router architecture and operations to support the network mobility of ZigBee network. Also, we present the design and implementation of the ZigBee Mobile Router for healthcare system. The architecture is particularly useful to manage patient's mobility where each patient is equipped with ZigBee sensor nodes.