Patent ID: 8903930

Claim:
A group-based M2M communication method of performing with a base station, as a representative of a M2M communication device group, a specific M2M communication device and other M2M communication devices are included in the M2M communication device group, the method comprising: performing an initial network entry procedure with the base station, wherein at least one of location information, battery information, and signal quality information of a specific M2M communication device is provided to the base station during the initial network entry procedure; and receiving a message indicating that the specific M2M communication device will be used as a representative of the M2M communication device group, from the base station, wherein the message includes a group ID (identifier) of the M2M communication device group, an ID of the specific M2M communication device and a list of candidate M2M communication devices to be contained in the M2M communication device group, performing an uplink or downlink communication with the base station using the group ID as the representative of the M2M communication device group; and transmitting an indication message indicating that the specific M2M communication device is a representative of the M2M communication device group, to M2M communication devices contained in the list of the candidate M2M communication devices, wherein the indication message includes at least one of an ID of the specific M2M communication device, the group ID, an M2M communication type of the M2M communication device group, and location information of the specific M2M communication device.