Research On Networking Technology Of Police Patrol And Emergency Based On NDN Networking

As an important component of the police patrol work,the patrol communication network is extremely dependent on the infrastructure when it comes to the communication of patrol personnel,which will seriously threaten the police patrol work in case of natural disasters or human damage.To prevent network failure,this thesis chooses a network structure that can be set up without infrastructure,Mobile Ad Hoc Networking(MANET),as the emergency network infrastructure.However,this network suffers from inadequate security and low quality of service under high mobility.Based on these shortcomings,this thesis proposes to combine the Named Data Networking(NDN)with high mobility,self-embedded security,and in-network caching features as the transmission control unit of MANET structure,to realize the safe and efficient data transmission of high-mobility dynamic police patrol network.In this thesis,the basic structure of the MANET network is determined from the demand of emergency networking;through the network simulator NS3 The basic experiments are carried out with the Networking Simulator version 3(NS-3).The best routing scheme is determined by experimenting with the network service performance,network formation speed,and network stability under different environments,number of nodes,and node speed with different routing schemes of MANET network;NDN-MANET networking experiment is realized by ndn SIM(NDN Simulation)simulator.Apply the NDN layered model to override the traditional TCP/IP seven-layer model in terms of MANET network service performance.The combination of NDN and MANET networks is realized to solve the problems of link discontinuity,inadequate security,and poor network service performance due to frequent topology changes under the high shift dynamics of the MANET network.Improves and implements the application of NDN-MANET network based on MANET Optimum Link State Routing Protocol(OLSR)protocol;network performance comparison experiments under patrol scenarios;Bonn Motion mobile simulation software designs police patrol scenarios and environments,and ndn SIM simulation implements Comparison of NDN-MANET traditional solution UDP-Face and improved OLSR solution.In this thesis,the first objective is to achieve a fast and stable network for the NDN-MANET network;the network is based on the realization of the network mb4 format video file transmission parameters required to explore the police patrol process high-level data transmission routing scheme.All in all,the network realizes the networking in emergency scenarios and improves on the general emergency network,strengthening the transmission capability and resistance to destruction in the emergency network,effectively improving the problems of network lag,unstable transmission,and slow build in emergency police patrol tasks.