Research On The Routing Protocol Of Underwater Acoustic Sensor Network Based On Geographic Location

The 21 st century has ushered in a new era of comprehensive development and utilization of marine resources by mankind.Underwater Sensor Networks(UWSN)are gradually becoming widely used in marine monitoring,offshore exploration,auxiliary navigation,tsunami warning,and military fields.It has become a hot spot for scholars from various countries.Routing protocol is one of the core issues related to underwater acoustic communication network research.Its pros and cons greatly affect the performance of the network in terms of end-to-end delay,energy consumption rate and data packet transfer rate.Due to the prolonged propagation time,limited communication bandwidth,rapid change of channel characteristics,serious multipath phenomenon,and complex noise characteristics in the underwater acoustic channel used by the underwater acoustic communication network,the design of the underwater acoustic communication network routing protocol faces many problems.problem.Based on the analysis and summary of the design ideas and characteristics of common underwater acoustic communication network routing protocols,this paper conducts an in-depth study on the geographical location-based multi-hop vector forwarding routing protocol HHVBF routing protocol,aiming at the data packet redundancy and topology change perception of the algorithm.For sensitive issues,an improvement plan is proposed,and a timing forwarding routing protocol based on conical surface is designed.In order to further link stability and adaptability in sparse networks,this paper discusses routing protocols with hole detection and avoidance mechanisms based on normalization factors.Finally,a network simulation environment was built on OMNe T++,and the performance of the improved protocol in the network was tested,and compared with the original protocol and common underwater acoustic network routing protocols,it was verified that the improved protocol has better packet transfer rate.The performance advantage.The main work and research results of this paper are as follows:1)Aiming at the poor adaptability to dynamic networks,serious data conflicts and other shortcomings of the routing principle of using nodes in the virtual pipe to broadcast and forward data packets in the HHVBF protocol,a conical-based timing forwarding algorithm is proposed.The new algorithm uses the beacon to obtain the local routing table information,and by using the newly designed candidate set selection algorithm,it realizes the effective transmission of data packets and further improves the data packet transmission rate.At the same time,the new algorithm adopts a timing forwarding mechanism.Compared with the original algorithm of broadcast forwarding,the new algorithm reduces the number of nodes participating in each hop,increases the efficiency of data forwarding,and effectively increases the ability of nodes to respond to changes in position during communication.The probability of data transmission conflicts.2)Aiming at the problem of link stability not considered in the HHVBF protocol,this article uses factors such as node location,expected transmission count,node type,energy consumption rate,and packet transfer rate to construct a normalized model for all nodes in the candidate set.Perform forwarding priority evaluation,combined with node energy limited constraints,design an algorithm for optimal forwarding data under node limited energy.The newly designed algorithm combines local routing table information to increase the adaptability to link quality.The simulation results show that the new algorithm effectively reduces the endto-end delay of network data messages.