NB-IoT Uplink Resource Scheduling Rearch

With the constant change of communication technology,the rise of a large number of communications between things and things has become a new growth point in the telecommunications industry.It is widely believed that the Internet of things is about to become the next blue ocean with great commercial potential.With its strong coverage,small power consumption,low cost and large connectivity,narrow-band Internet of Things technology has become the key technology in Internet of things communication.However,in the face of a large number of terminals,the rational allocation and flexible call of limited resources in the system become an important topic in the research of narrow-band Internet of Things.So,this article carries on the research to the narrow-band IoT uplink resource scheduling.First of all,this paper studies the key technologies of narrow-band Internet of Things(IOT)classifies the narrow-band Internet of Things(IoT)services according to the application scenarios of narrow-band IoT in different industries,extracts the features of different services,and establishes the service feature model and traffic model of the narrow-band IoT service.Secondly,based on the analysis and research of three classic resource scheduling algorithms and combined with the key technologies of narrow-band Internet of Things(IOT),this paper proposes three improved scheduling methods for uplink resource scheduling algorithm.In the improved algorithm of anomaly reporting,for the users of anomaly reporting service only,the improved algorithm proposes an improvement of the proportional fairness algorithm based on the "RU continuity"principle of uplink resource scheduling.In the non-anomaly reporting improved algorithm,for non-abnormal reporting services only,the improved algorithm takes advantage of the maximum load-to-interference ratio algorithm and the round-robin scheduling algorithm,and adopts the method of phased scheduling to realize the scheduling of uplink resources.The full-service improvement algorithm is a combination of the first two improved algorithms.When the service of the user in the system involves all the service types,the improved algorithm aims at different narrow-band Internet of Things services,establishes different user alignment,adjusts the scheduling order of different queues for resource scheduling,balance between system throughput and user fairness,thus ensuring narrow-band Internet business efficient transmission in the system.Finally,this paper uses the built wireless network planning and simulation platform to take system-level simulation of narrow-band IoT system.The established narrow-band IoT business model and the proposed improved algorithm are added to the simulation software and this paper simulates with different improved algorithms.Simulation results are analyzed to verify the correctness and superiority of the improved algorithm in the paper.