Patent ID: 8631254
Filing Date: 2014-01-14
Classification: A61B,H04B,H04L,H04M,H04W,Y02D

Abstract:
1. A network device contained in a Wireless Body Area Network (WBAN), the network device comprising: a wake-up circuit to receive a wake-up radio signal from a network control device using a Radio-Frequency Identification (RFID) receiver, to compare a Wake-up Authentication Code (WAC) contained in the received wake-up radio signal with a WAC stored in advance, and to determine whether to wake up a main circuit unit, the network control device being contained in the WBAN; and the main circuit unit to be woken up in response to an interrupt signal from the wake-up circuit; wherein the main circuit unit comprises: a communication circuit to transmit a response signal to the network control device, after the main circuit unit is woken up in response to the interrupt signal; and a security circuit to update a counter, and to update the stored WAC based on at least one of the updated counter, an address for the security circuit, an address for the network control device, and a key shared with the network control device, in response to the interrupt signal from the wake-up circuit.