Abstract:
본발명은수신기에서의에너지하베스팅(energy harvesting) 방법을개시하고있다. 상기방법은수신신호를수신하는단계, 상기수신된수신신호에적용된변조방식정보를획득하는단계, 목표 BER(Bit Error Rate)을달성하기위한상기획득된변조방식에따른 SNR(Signal to Noise Ratio) 또는 SINR(Signal to Interference plus Noise Ratio)의크기를결정하는단계및 상기결정된 SNR 또는 SINR 크기를기반으로에너지하베스팅을위한전력분배율(ρ)을결정하는단계를포함한다.
Abstract:
The present invention discloses a method, an apparatus, and a system for timing synchronization in an inter-terminal direct communication system. The method for timing synchronization includes a step in which a master node that controls timing synchronization of the system acquires synchronization signal reception time information reflecting relationship with an adjacent terminal through inter-terminal synchronization signal exchange from every sub-node on the system; and a step in which the master node transmits transmission time adjustment information relating to adjustment of transmission time of each sub-node to each sub-node by allowing for inter-link delay spread based on the synchronization signal reception time information of each sub-node. Accordingly, a synchronization process that is performed under control of a base station or a single master terminal is allowed for, and thus the master node-based timing synchronization method allows each terminal to decrease a protection section assignment additionally required due to time delay. Therefore, resources for inter-terminal direct communication can be efficiently used.