Abstract:
무선 통신 시스템에서 단말 간 디스커버리 방법이 개시된다. 단말은 물리계층 상향링크 채널 또는 신호를 위한 제1 서브프레임과 디스커버리 신호를 위한 제2 서브프레임이 서로 동일한지 여부를 판단한다. 여기서, 단말은 제1 서브프레임과 제2 서브프레임이 서로 동일한 경우, 동일한 서브프레임에서, 디스커버리를 신호를 송신 또는 수신하지 않고 물리계층 상향링크 채널 또는 신호를 송신한다.
Abstract:
하향 링크를 이용하여 제어 채널을 전송하는 통신 시스템에 제공된다. 상기 통신 시스템은 햐향 링크를 이용하여 상향 링크 할당 정보가 전송되는지 여부를 나타내는 상향 링크 할당 정보 전송 여부 정보를 단말기로 전송하고, 단말기는 상향 링크 할당 정보 전송 여부 정보에 기반하여 하향 링크 프레임에 상향 링크 할당 정보가 포함되었는지 여부를 판단한다. 또한 기지국은 하향 링크 물리 제어 채널이 전송될 수 있는 자원에 대한 정보를 단말기로 전송하고, 단말기는 하향 링크 물리 제어 채널이 전송될 수 있는 자원 내에서만 하향 링크 제어 채널을 디코딩한다.
Abstract:
Disclosed are a method and apparatus for direct communication between terminals. The method for direct communication between terminals includes the steps of: setting a plurality of wireless resources which are dispersedly located on a frequency axis; and transmitting data to a second terminal by using the wireless resources. Therefore, interference due to cellular communication is reduced.
Abstract:
The present invention relates to a data transmission system using carrier aggregation and, more particularly, to a wireless communication system applying a carrier aggression method. The data transmission system allocates a wireless resource by using a correspondent relation between a downlink and a uplink and transmits data by using the allocated wireless resource. [Reference numerals] (AA) Upward link
Abstract:
Transceiving method for device to device (D2D) communications is disclosed. The present invention is as a way to operating a device for receiving data or control information from an opponent device by using a subframe for the D2D communications, comprises a step for receiving the state information of the opponent device from a base station and a step for determining the reception state of the control information or the data from the opponent device in one or more symbols of the subframe for the D2D communications based on the state information. Therefore, stable D2D communications are available by recognizing a symbol, which is unable to be received, and by considering the state of the opponent device and the device. [Reference numerals] (AA) Order;(BB) S_n+1(0) device 1 state;(CC) S_n+1(0) device 2 state;(DD) S_n(E) availability
Abstract:
A terminal-to-terminal communication method based on partial terminal control is disclosed. A D2D communication method, given in the present invention, is a partial terminal control method for D2D communication. Provided are a method for assigning or clearing D2D resources, a method for performing a D2D HARQ process, a link adaptation method including the power control of a D2D link and adaptive modulation and coding (AMC), a D2D control data signaling method, and a CSI report mode and content for D2D communication. The present invention combines a D2D communication method for a station control mode and a D2D communication method for a terminal control mode, thereby utilizing the benefits and supplementing the weaknesses of both modes. [Reference numerals] (AA) Detected;(BB) Undetected;(CC,EE) Success in demodulation;(DD,FF) Failure in demodulation;(S2301) Perform grant detection;(S2302,S2303) Perform data demodulation;(S2302-1) Data-ACK, transmit that the grant is detected;(S2302-2) Data-NACK, transmit that the grant is detected;(S2303-1) Data-ACK, transmit that the grant is not detected;(S2303-2) Data-NACK, transmit that the grant is not detected