GROUP AUTHENTICATION AND KEY MANAGEMENT FOR MTC

摘要

An SCS (60) sends out a trigger message for activating a group of MTC devices (10_1 to 10_n) through a network. An HSS (40) verifies whether or not to transfer the trigger message to the given MTC devices (10_1 to 10_n) based on subscription information of the group. A group GW (20) broadcasts the trigger message. Further, An MME (30) concatenates DL (downlink) messages addressed to the MTC devices (10_1 to 10_n). The group GW (20) distributes, to the MTC devices (10_1 to 10_n), the DL messages included in the concatenated message. Furthermore, the group GW (20) concatenates UL (uplink) messages received from the MTC devices (10_1 to 10_n). The MME (30) processes the UL messages included in the concatenated message.