Abstract:
무선망에서 네트워크 동기를 획득하는 방법이 개시된다. 동기를 획득한 노드는 미리 설정된 주기에 따라 제1 동기 기준 신호, 제2 동기 기준 신호 및 비콘을 전송하고, 동기를 획득하지 못한 노드는 적어도 하나의 송신 노드로부터 전송되는 제1 및 제2 동기 기준 신호와 비콘을 수신한 후, 제1 동기 기준 신호에 기초하여 일시적으로 네트워크 동기를 획득하고 비콘을 디코딩하여 적어도 하나의 송신 노드의 존재를 확인한 후, 존재가 확인된 특정 송신 노드에 네트워크 동기 전달 서비스 또는 시간 조정을 요청하고, 제공되는 동기 전달 서비스에 기초하여 동기를 획득한다.
Abstract:
Disclosed is a device-to-device (D2D) communications method and apparatus. A communications method performed in a second device comprises the steps of: receiving first configuration information for receiving a reference signal and second configuration information for reporting channel state information from a base station; receiving the reference signal based on the first configuration information from a first device; generating the channel state information on a communications link between the first device and the second device based on the reference signal; and transmitting the channel state information based on the second configuration information to the base station. Therefore, the D2D communications can be performed effectively. [Reference numerals] (10) First base station; (11) First terminal; (20) Second base station; (21) Second terminal; (S100) CSI-SRS transmission configuration information; (S110) CSI-SRS reception configuration information D2D-CSI report configuration information; (S130) D2D-CSI generation; (S140) D2D-CSI report
Abstract:
PURPOSE: A device-to-device (D2D) communication method in a wireless communication system is provided to control the transmission and reception of a sounding reference signal for measuring a channel state of a D2D link. CONSTITUTION: A first terminal (411) receives an activation reception allocation information of a first D2D link from a first base station (410) in a first sub frame (S410). The first terminal transmits whether a reception is successful about the activation reception allocation information of the first D2D link or not in a second sub frame after the fixed number of sub frames from the first sub frame (S430). The first terminal receives the data of the first D2D link from a second terminal based on the activation reception allocation information of the first D2D link in a third sub frame after the fixed number of sub frames from the second sub frame. [Reference numerals] (410) First base station; (411) First terminal; (420) Second base station; (421) Second terminal; (S410,S411) Sounding reference signal setting information; (S420) Sounding reference signal; (S430) Channel state information
Abstract:
PURPOSE: A method of transmitting and receiving control information in a mobile communication system is provided to efficiently use resources by adaptively assigning the resources according to a required capacity of the control information. CONSTITUTION: Down link control information is generated. A down link control channel resource which transmits the down link control information is determined through a data channel domain. The generated down link control information is transmitted to a terminal using the determined control channel resource. The control channel is transmitted using either of a first slot(101) or a second slot(102) of a subframe(100) or both the first slot and the second slot. [Reference numerals] (100) Subframe; (110) Existing control channel transmission region; (130) EPDCCH transmission region; (AA) Frequency; (BB) Time; (CC) EPDCCH : new type of the control channel
Abstract:
PURPOSE: A distribution antenna wireless communication system and a method thereof are provided to perform efficient communication by using a plurality of points in a network environment having respectively different physical layer cell IDs. CONSTITUTION: A base station(110) allocates a virtual cell ID for generation of a UL signal of at least one terminal. The base station supplies the allocated virtual cell ID information by portable terminal. The base station allocates the virtual cell ID by terminal. The base station allocates respectively different virtual cell IDs in a downlink and an uplink.
Abstract:
PURPOSE: A wireless communication system using multiple transmission and reception points is provided to offer a physical channel transmission method and a reference signal transmission method for downlink communication using a plurality of transmission and reception points. CONSTITUTION: A wideband transmission and reception point(130) includes a wide transmission area(131) which is wider than one or more narrowband transmission and reception points(150). The wideband transmission and reception point and the one or more narrowband transmission and reception points creates a downlink transmission signal using physical cell ID(Identification). The wideband transmission and reception point uses high transmission power. The narrowband transmission and reception point uses power which is lower than the wideband transmission and reception band.
Abstract:
본 발명은 기지국이 단말기로부터 수신한 데이터에 대한 수신 성공 여부 정보를 단말기로 전송하는 기술에 관한 것이다. 본 발명에 따르면 각 단말기들에 대한 순환 천이 값 차이를 최대화하면서도 수신 성공 여부 정보 전송을 위한 무선 자원을 충돌 없이 할당할 수 있다. 순환 천이, 기준신호, reference signal, PHICH, ACK, NACK
Abstract:
PURPOSE: A relaying method of performing selective delivery and a wireless communication system using the same are provided to reduce inter-neighbor cell interference due to unnecessary amplification through the selective delivery of a signal. CONSTITUTION: A BS(Base Station) transmits DL(DownLink) data to a terminal(S501). A relay unit detects the energy of the response signal of the terminal(S503). The relay unit reports information about the response signal of the terminal to the BS(S504). The BS decides the selectively delivery of a corresponding signal in the relay unit in the DL signal transmission to a corresponding terminal. The BS delivers information to the relay unit in advance before transmission of the DL signal(S505).