Research On The Key Technologies Of Radio Energy Capture Network Collaboration Relay

Radio frequency energy capture network is an emerging research field in recent years.Its technology greatly expands the application range of wireless sensor networks and also greatly prolongs the service life of the network.At the same time,in a multi hop relay network,cooperative relay technology can help overcome signal attenuation by using relay nodes,thereby improving network performance in terms of efficiency and reliability.Therefore,this technique is also often used in RF energy capture networks.The main work of this paper is as follows:The relay node in a wireless network has such a characteristic that an optimal relay node for transmitting information is not necessarily the most powerful relay node for capturing energy.In view of this feature,this paper sets an energy threshold for relay nodes,considers both information transmission and energy capture to select relay nodes for wireless networks,and proposes a multi-relay selection strategy suitable for RF energy capture networks..In addition,in order to ensure that the energy captured by the relay node can be reasonably distributed during multiple weeks,this paper proposes a multi-threshold relay selection strategy to balance the energy distribution of relay nodes during multiple weeks by means of multiple thresholds.The relay nodes of each cycle are selected in a partially reserved manner.This allows the entire network to be transmitted at the same time in the current cycle,while also being able to retain some of the available node's energy for use in subsequent cycles,thereby improving network performance.The proposed relay selection scheme and node energy allocation strategy can improve the stability of network transmission,reduce the network outage probability,and improve the network's long-term throughput.