Research On Low Power Consumption Strategy Of Wireless Internet Of Things Under Reliability Constraints

The Internet of Things(IoT)includes a large number of end nodes.The battery capacity of these node devices is limited,so each node must have low power consumption characteristics.Deploying a reliable Internet of Things is especially important for the field of urban Internet of Things or industrial control.In order to ensure the service quality requirements of these Internet of Things,IoT needs to provide high reliability guarantees.However,there is an inherent conflict between low power consumption and reliability:an increase in reliability usually leads to an increase in power consumption,just like traditional retransmission-based reliability.Therefore,this paper aims at the trade-off relationship between reliability and low power consumption,by proposing a comprehensive and scientific reliability evaluation model,and testing the transmission reliability of IoT low-power networks.For networks whose reliability cannot be guaranteed,a low-power optimization strategy based on power control is proposed to ensure that data is reliably transmitted in the IoT while minimizing the traffic power consumption of IoT devices.This paper proposes a reliability evaluation system based on AHP-fuzzy comprehensive evaluation method.Based on the performance of the physical layer and the MAC layer,extract the performance indicators of the Internet of Things transmission reliability obtained by the device from the chip and data packets,and use this method to evaluate the transmission reliability of the low-power Internet of Things to realize the transmission of the Internet of Things Reliability analysis and transmission quality monitoring to ensure that the Internet of Things makes full use of wireless resources while maintaining the balance of low power consumption and reliability.Based on the reliability evaluation system,a reliability data acquisition module and a reliability detection program module in the coordinator are designed.When it is determined that the reliability of data transmission between IoT node devices is lower than a prescribed threshold,the reliability of data transmission will be reduced.Therefore,we will propose a low-power IoT power control optimization strategy to enable terminal devices with poor transmission reliability to transmit at the optimal power,reduce the probability of data transmission failure and retransmission,and improve the reliability and stability of transmission Performance,reducing equipment power consumption.The node energy consumption model,channel model and reliability model are established respectively.According to the strategy,the optimization problem model is established,the sequential quadratic programming algorithm is used to solve the optimal transmission power,and simulation verification and analysis are carried out.Finally,we carried out a detailed system design for the entire optimization process,which mainly included three modules:network communication,reliability detection and power control.Through simple experiments,according to the index data obtained in the transmission,the reliability of the transmission process is analyzed using the proposed reliability evaluation model,and the degree of reliability change before and after the application of the low-power optimization strategy is compared,and it is verified that the optimization strategy guarantees the transmission.The premise of reliability.Many methods have been developed to optimize the power consumption and increase reliability of the IoT.However,the method of reducing power consumption will in turn affect the reliability of the network.This relationship is particularly important in industrial applications.In this paper,the tolerable delay is extended to the reliability of the transmission process,the battery life is extended to the power consumption of the device,and the low-power optimization strategy under the constraints of transmission reliability is studied.