Improvement And Research Of Double Layer Random Multiple Access Protocol And LEACH Alaorithm In WSN

WSN is one of the key technologies to realize IOT.With the advent of the 5G era and the development of related technologies,WSN has shown broad application prospects.In the research field of WSN,the research of MAC protocol and routing protocol is one of the hot research directions.One of the objectives is to optimize the performance of the protocols and improve limited resource utilization in WSN to reduces power consumption and improves node lifetime.This paper takes WSN as the background and analyzed the data transmission success rate of three classic random multiple access protocols,and used MATLAB to carry out software simulation.The CC2530 radio chip is used as the hardware platform to simulate the working process of the classical random multiple access protocol in the actual channel environment.The data transmission and reception status of the data packet in the working process is saved and processed by python.The hardware simulation results and software simulation results consistent with the theoretical results,the correctness of the theoretical analysis is verified.Aiming at the shortcomings of the classical random multiple access protocol for poor adaptability to large loads,a two-layer random multiple access protocol is proposed based on combined two classical random multiple access protocols.The proposed two-layer random multiple access protocol is analyzed and the software and hardware simulations are simulated on MATLAB and CC2530 respectively.The results show that the hardware simulation is consistent with the software simulation process.When the number of cluster heads and the number of terminal nodes are sufficient,the simulation results are close to the theoretical values,confirming the theoretical analysis.The protocol is more suitable for large-sized networks that are convenient for power supply.Based on the double-layer random multiple access protocol and the hierarchical routing protocol LEACH,an improved algorithm with low latency,low power consumption and uniform network energy consumption is proposed.The improved algorithm combines the advantages of the two-layer random multiple access protocol and LEACH.The CSMA mechanism is adopted in the stable data transmission phase to reduce the data transmission delay.In terms of energy balance and energy consumption,the strategy is mixed into a small number of advanced nodes with high initial energy.In the cluster head election,the remaining energy and average energy of the node are comprehensively considered,which prolongs the network lifetime.This paper analyzes the delay and power consumption of the data transmission stage of the improved algorithm,and uses MATLAB to simulate and compare.It proves that the improved algorithm has optimized and improvement the performances such as delay,network lifetime,network energy uniformity and throughput.