Named Data Wireless Ad Hoc Network Resource Allocation And Routing Optimization Mechanism

With the development of the mobile Internet in recent years,the demand for the transmission of multimedia content such as video,voice,and text has become greater and greater,and content distribution has become the main demand of the mobile Internet.Named Data Networking(NDN)better supports network content distribution and becomes one of the hotspots for future network research.The convenient networking mode and robust network features of wireless ad hoc networks have brought more and more applications,such as vehicle networks and disaster emergency communications.The characteristics of being content-centric and supporting mobility make the application of named data networks to wireless ad hoc networks have many advantages.However,due to the characteristics of different transmission services,node mobility,unreliable wireless links,limited node resources,and constantly changing network topology,higher requirements are imposed on the quality of service of the network.Therefore,this article will study how to improve the quality of service(QoS)in named data wireless ad hoc networks.Aiming at the QoS requirements in named data wireless ad hoc networks,this paper studies from two aspects.First of all,various types of services have different requirements for network transmission.It is urgent to name the data.Wireless ad hoc networks can provide differentiated service-based resource allocation for different services on the basis of ensuring data transmission,and improve the transmission quality of services.In addition,due to the characteristics of dynamic topology change and channel fading of named data wireless ad hoc networks,network performance and service quality are greatly affected.Therefore,there is an urgent need to ensure efficient transmission of various business data by optimizing routing decisions.In order to achieve the resource allocation requirements in named data wireless ad hoc networks,this paper proposes a multi-priority Bionic Competition Mechanism based on Differentiated Services(MBCM).First of all,according to the characteristics of naming content names,a method for identifying service types in content names to distinguish different services is designed.Routing nodes can distinguish Interest packets and Data packets based on the type fields in content names.Then,in order to achieve a reasonable resource allocation scheme,based on the EDCA protocol,comprehensively consider internal competition between the same type of data and external competition between different types of data,and establish a differentiated service transmission model based on multi-priority bionic competition.To ensure the stability and dynamic adaptability of the network.Finally,simulation experiments verify the effectiveness of the proposed mechanism,which can improve the network throughput of various services,reduce transmission delay and packet loss rate,and ensure the friendly and efficient transmission of various service data.In order to improve the routing transmission capability of named data wireless ad hoc networks,this paper proposes a DQN-based Multi-service Multi-path Routing Mechanism(DMMRM).First of all,for the characteristics of named data wireless ad hoc network nodes moving and the network topology constantly changing,a cluster-based network model is established to implement algorithm learning and routing forwarding of routing strategies at the cluster head nodes;and implement multiple methods based on deep Q learning.Service multi-path routing mechanism.Based on performance indicators such as delay,bandwidth,node stability,and cache hit ratio,a routing optimization mechanism based on deep Q learning is established.It can update routing policies in time according to changes in network status to achieve optimal path forwarding.Then,based on the advantages of multi-path,a multi-service multi-path mechanism was proposed,and three path constraints were designed to provide suitable transmission paths for different types of services,which improved the efficiency of data transmission and ensured network load balancing.Finally,the effectiveness of the proposed mechanism is evaluated through simulation experiments.The experiments show that the mechanism can effectively improve the success rate of requests,reduce the response delay,and ensure the bandwidth utilization of various services.