Research And Verification Of Key Techniques For Broadband Wireless Body Area Network Resource Allocation

Wireless body area network is a small,dynamic network centered on the human body,and has wide application value in remote medical monitoring,individual information operations,athlete body monitoring and so on.However,while the body area network is widely used,it also brings some technical challenges to related research.This paper focuses on the inter-network spectrum allocation and intra-network resource scheduling in the key technologies of broadband wireless body area network resource allocation.The main work of this thesis is as follows:Firstly,the functional requirements and performance requirements of key technologies for broadband wireless body area network resource allocation are demonstrated in detail.Aiming at application scenarios,the functional requirements of inter-network spectrum allocation and intra-network resource scheduling in body area network resource allocation are described.Then performance performance indicators for body area network resource allocation are proposed,and the indicators are analyzed in detail.Secondly,the design and simulation of inter-network spectrum allocation algorithm for body area networks are carried out.Aiming at the inter-network interference problem of multiple body area networks co-existing,combined with the practical application scenario of this paper,the interference of inter-network spectrum allocation is modeled as a two-dimensional undirected graph,thereby transforming the spectrum allocation problem into a graph coloring problem.The algorithm based on graph theory coloring model is used for spectrum allocation,and three greedy algorithms based on graph coloring are studied.Through Matlab simulation verification,the performances of the average coloring number,coloring time and system throughput of the algorithm are analyzed and compared.Simulation results show that the coloring time of several algorithms is relatively short,and the average coloring number performance of the algorithm based on saturation is better than the other two algorithms.Thirdly,the design and simulation of intra-network resource scheduling algorithm for body area networks are carried out.Aiming at the resource scheduling problem in a single body area network,combined with the technical indicator requirements of this paper,research and design resource scheduling algorithms based on non-real-time and real-time services,and compare and analyze the strategies and performance advantages of each algorithm.Through Matlab simulation verification,the performance of the algorithm in terms of system throughput,user fairness,packet delay,and packet loss rate are compared.Simulation results show that real-time service scheduling algorithms perform better than non real-time service scheduling algorithms in terms of quality of service requirements for real-time services in the case of mixed service types.Fourthly,the software defined radio platform is used to experimentally verify the resource allocation algorithm.Through the experimental test of the algorithm based on saturation,it is verified that the algorithm functions correctly and the performance of spectrum allocation time meets the indicators proposed in this paper.Through the experimental test of the resource scheduling algorithm,it is verified that the algorithm can achieve the correct scheduling function,and the average throughput,packet delay and packet loss rate performance of the two scheduling algorithms based on real-time services meet the indicators proposed in this paper.Through algorithm simulation and experimental verification,this paper verifies that the algorithm designed in this paper meets the function and performance requirements of body area network resource allocation,and provides the theoretical and engineering basis for the related research of body area network resource allocation.