Abstract:
A communication system (100) comprises a macrocell base station (MeNB) (110) which determines the number of shared sub bands which a femtocell base station (HeNB) (130) uses and the femtocell base station (HeNB) (130) which selects an adjacent shared sub band which the adjacent HeNB located at a reference distance uses among the shared sub bands.
Abstract:
The present invention relates to a method and apparatus for two-hop link transmission in a wireless communication network. The two-hop link transmission method for a sending terminal in a wireless communication network according to the present invention comprises: an identification step of identifying adjacent terminals to communicate with; a link deciding step of selecting a terminal to communicate with among the identified terminals, and deciding either a one-hop link or two-hop link as a communication link type with the selected terminal; a link forming step of forming a two-hop link by selecting a relaying terminal when the two-hop link is decided, and allocating at least one multi-hop connection identifier (MCID) to identify the two-hop link; and a transmission step of transmitting data to be transmitted to the receiving terminal by the formed two-hop link through the relaying terminal. [Reference numerals] (AA) Two-hop one-way communication link (MCID=j, 1
Abstract:
개시된 기술은 단말 간 직접 통신(Device-to-Device통신; 이하, D2D통신)을 수행하는 제1 통신 단말이 기지국과 통신을 수행하는 제2 통신 단말과 동일한 무선 자원을 사용하는 경우, 상기 제1 통신 단말과 상기 제2 통신 단말 간의 채널이득(이하, 제1 채널이득)을 측정하는 단계; 및 상기 기지국이 상기 제1 채널이득을 기초로, 상기 제1 통신 단말이 송신한 신호에 의하여 제2 통신 단말에 전파 간섭이 발생하지 않도록 상기 제1 통신 단말의 송신 전력을 제어하는 단계를 포함하는 D2D단말의 전력 제어 방법이다.
Abstract:
Provided is a method for selecting, by a device, a peer discovery resource (PDR) in a device-to-device (D2D) communication system comprising the steps of: determining a PDR selection range that can be selected by the device; and selecting a PDR in the PDR selection range.
Abstract:
통신시스템(100)은 펨토셀 기지국(HeNB, 130)이 사용할 수 있는 공유 부대역의 수( )를 결정하는 매크로셀 기지국(MeNB, 110) 및 개의 공유 부대역 중에서 기준 거리에 위치한 이웃 HeNB가 사용하는 이웃 공유 부대역을 선택하는 펨토셀 기지국(HeNB, 130)을 포함한다.
Abstract:
The present invention comprises the steps of enabling a base station to obtain channel gain information for at least one D2D communication terminal (DUE) and at least one mobile communication terminal (CUE) located in the coverage of the base station (610); of enabling the base station to determine final transmission power between the mobile communication terminal (CUE) and the D2D communication terminal (DUE) using the channel gain information (620); and of enabling the base station to allocate resources to the selected D2D communication terminal by selecting the D2D communication terminal (DUE) which shares the resources with the mobile communication terminal (CUE) (630). The determination step (620) determines the transmission power of DUE j, in which the sum of the CUE i transmission rate and the DUE j transmission rate is maximized when the base station shares the same resources between the CUE i and the DUE j using the channel gain information, as the optimal transmission power. The allocation step (630) comprises a step of enabling the base station to allocate the resources to CUE i (631); a step of enabling the base station to select the DUE j which becomes the maximum sum of the CUE i among DUE using the determined optimal transmission power; and a step of enabling the base station to enabling the base station to transmit a control signal including resource information allocated to the CUE i and the optimal transmission power for the DUE j to the selected DUE j through a downlink.
Abstract:
A communications system (100) includes a macrocell base station (MeNB, 110) which determines the number (N_c) of shared bus bands in which a femtocell base station (HeNB, 130) uses; and the femtocell base station (HeNB, 130) which selects an adjacent shared sub band in which the adjacent HeNB located in a reference distance uses among the shared sub bands in the number of N_c.
Abstract:
A method for controlling interference between APs according to the embodiment of the present invention includes the steps of: enabling a header AP to collect information about an adjacent AP using the same channel by using a relay terminal connected to the header AP; enabling the header AP to transmit an IP address to the adjacent AP by using the collected information and to set a session with the adjacent AP; and enabling the header AP to change the channel of a target AP among the adjacent APs through the set session. The method further includes the step of controlling the transmission power of the target AP and the header AP if the APs use all the channels.
Abstract:
PURPOSE: A wireless multi-hop network is provided to reduce node energy consumption in order to have a prolonged lifetime. CONSTITUTION: A plurality of preamble packets is successively transmitted by a predetermined time interval(S420). A preamble packet informs one or more other nodes that a packet will be transmitted. The preamble packet comprises information about the destination of packet data. The data packet is transmitted(S422). One or more other nodes perform a listening operation periodical channel sensing period. One or more other nodes decide whether one of the preamble packets is received.