LoRa wireless technology has low data transmission rate

which is suitable for star type networking.The existing star type network anti-collision polling mechanism has poor performance in large capacity network. Based on two aspects of channel competition avoidance algorithm and clustering hybrid routing

a data transmission anticollision algorithm suitable for LoRa network is proposed

which can adapt to the change of network traffic.Through NS2 software simulation verification

in large capacity LoRa network

the algorithm improves the performance of energy consumption

throughput and transmission delay

and improves efficiency of data transmission.