Patent ID: 7839764
Filing Date: 2010-11-23
Classification: H04L,H04W

Abstract:
1. A wireless sensor network gateway unit for use in cooperation with a wireless sensor network and a wireless communication system, wherein the wireless sensor network is composed of a plurality of sensor nodes, for providing a data-transmission gateway function for the wireless sensor network to communicate with the wireless communication system; the wireless sensor network gateway unit comprising: a wireless sensor network linking module, which is used for wireless linking to the wireless sensor network for data exchange with each sensor node in the wireless sensor network to receive each set of ecological data acquired by each sensor node; a wireless sensor network configuration module, which is capable of configuring the sensor nodes in the wireless sensor network based on a predetermined topology for allowing each sensor node to exchange data with the wireless sensor network linking module by a multihop routing method; a data transmission module, which is capable of converting each received set of ecological data into a specific data format based on a wireless communication protocol that is compliant with the wireless communication system; a wireless communication linking module, which is capable of linking to the wireless communication system for transmitting the formatted ecological data from the data transmission module to the wireless communication system; a node-failure event responding module, which is capable of responding to a node-failure event in the wireless sensor network by issuing a redirection enable message; and a failed-link redirecting module, which is capable of responding to the redirection enable message by performing a failed link auto-redirecting operation for the wireless sensor network.