Patent ID: 8868001

Claim:
An operation method of a machine type communication device using a power stored in a battery, in a network comprising at least one machine type communication device, the method comprising: receiving, from a network apparatus included in the network, a residual power monitoring request with respect to the battery; monitoring a residual power of the battery in response to the residual power monitoring request; transmitting the monitored residual power of the battery to the network apparatus in response to the residual power monitoring request; and receiving again a residual power monitoring request from the network apparatus based on the monitored residual power, wherein the network apparatus compares the residual power of the battery with a predetermined threshold, when the residual power of the battery is less than the threshold value, the network apparatus transmits comparison result to a device of a manager that manages the machine type communication device or the network apparatus, and when the battery is charged or replaced with a new battery based on the comparison result and thus the residual power of the battery is recovered greater than or equal to the threshold value, the device of manager transmits a response which indicates the battery recovered greater than or equal to the threshold to the network apparatus.