Patent ID: 8116243

Claim:
A wireless sensor network, comprising: a base station; and a plurality of sensor nodes to relay information to the base station, the sensor nodes including a first sensor node, a second sensor node, and a third sensor node arranged proximate to each other, wherein the first sensor node comprises: a radio transceiver to transmit a message to the base station; a parameter database comprising memory to store a list of sensor nodes known to the first sensor node and parameters corresponding to the list of sensor nodes; a trust estimator to determine a trust value of the third sensor node; and a security responser to compare the trust value of the third sensor node with a trust value threshold, the security responser to determine whether to include the third sensor node in a packet transmission route from the first sensor node to a destination according to the comparison result, wherein the trust value is a value representing how much the first sensor node trusts the third sensor node, and wherein the security responser comprises a parameter manager to update and manage the parameter database according to policies for parameter management.