Abstract: A method and user equipment (UE) for performing device-to-device (D2D) communication in a wireless communication system is disclosed. The method of performing D2D communication by a D2D UE includes informing a mobility management entity (MME) about a first identifier (ID) of a target UE of D2D communication, receiving information regarding a second ID and a D2D peer discovery section, corresponding to the target UE, determining whether D2D communication with the target UE is possible using the received information, requesting the D2D communication with the target UE to the MME when the D2D communication with the target UE is possible, and receiving a D2D link ID allocated to the D2D link with the target UE from a base station (BS) receiving approval of communication of the MME.

Abstract: A method for performing device to device (D2D) communication in a wireless communication system and a user equipment for the method are disclosed. The method comprises the steps of determining at least one D2D communication group a of a plurality of D2D communication groups; and giving RNTI corresponding to the determined at least one D2D communication group a to a D2D transmitting user equipment i and a D2D receiving user equipment j of a D2D link (i, j).

Abstract: A method for performing device to device (D2D) communication in a wireless communication system and a user equipment for the method are disclosed. The method comprises the steps of determining at least one D2D communication group a of a plurality of D2D communication groups; and giving RNTI corresponding to the determined at least one D2D communication group a to a D2D transmitting user equipment i and a D2D receiving user equipment j of a D2D link (i, j).

Abstract: A method and user equipment (UE) for performing device-to-device (D2D) communication in a wireless communication system is disclosed. The method of performing D2D communication by a D2D UE includes informing a mobility management entity (MME) about a first identifier (ID) of a target UE of D2D communication, receiving information regarding a second ID and a D2D peer discovery section, corresponding to the target UE, determining whether D2D communication with the target UE is possible using the received information, requesting the D2D communication with the target UE to the MME when the D2D communication with the target UE is possible, and receiving a D2D link ID allocated to the D2D link with the target UE from a base station (BS) receiving approval of communication of the MME.

Abstract: A group-based control method and a group-based control apparatus for Machine Type Communication (MTC) devices in a mobile communication system are provided. The method includes sending, when an attach request from an MTC device is received by a Mobility Management Entity (MME), an attach report to a Home Subscriber Server (HSS), starting, upon reception of the attach report by the HSS, a timer lasting for a preset time duration, counting the number of MTC devices requesting attachment and the number of already attached MTC devices during the preset time duration, determining, upon expiration of the timer, by the HSS, an Access Point Name-Aggregate Maximum Bit Rate (APN-AMBR) in consideration of a sum of the counted number of MTC devices requesting attachment during the preset time duration and the counted number of already attached MTC devices, and sending, by the HSS, the determined APN-ABMR to the MME.

Abstract: A group-based control method and a group-based control apparatus for Machine Type Communication (MTC) devices in a mobile communication system are provided. The method includes sending, when an attach request from an MTC device is received by a Mobility Management Entity (MME), an attach report to a Home Subscriber Server (HSS), starting, upon reception of the attach report by the HSS, a timer lasting for a preset time duration, counting the number of MTC devices requesting attachment and the number of already attached MTC devices during the preset time duration, determining, upon expiration of the timer, by the HSS, an Access Point Name-Aggregate Maximum Bit Rate (APN-AMBR) in consideration of a sum of the counted number of MTC devices requesting attachment during the preset time duration and the counted number of already attached MTC devices, and sending, by the HSS, the determined APN-ABMR to the MME.