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Study On The Feasibility Of 350 MHz Police Digital Trunking System

Posted on:2019-08-25Degree:MasterType:Thesis
Country:ChinaCandidate:T ZangFull Text:PDF
GTID:2428330566999611Subject:Electronic and communication engineering
Abstract/Summary:PDF Full Text Request
In recent years,digital trunk communication technology has developed rapidly and has played a significant role in the field of electronic communications.In addition,it is an integral part of policing work.In contrast,the problems existed in the original analog simulcast communication system have gradually emerged.Problems such as backward technology,aging equipment,low frequency utilization,small network capacity,and incomplete system functions have made the network unable to adapt the current departments demand for new services.Forasmuch the study of digital trunking communication system is imminent.This thesis is based on the police digital trunking system communication theory,studyingthe police digital trunking system construction plan and network planning scheme of the Public Security Bureau in Hainan Province.The study of the program provides theoretical reference support for the practical application of police digital clusters.The main contents and results of this thesis are as follows 1.The development and theoretical basis of the cluster communication system is expained.Starting from analog trunking communication,it gradually evolved into digital trunking communication,Police digital trunking communication is one of methods,which is more widely used.2.The technical demand indicators and system demand functions of the police digital trunking system is analyzed.According to the police digital trunking system demand function,the technical indicators of the police digital trunking system need to further in-depth understanding,so as to lay a good foundation for the construction of the following police digital trunking system.3.The police digital trunking system with a four-level topology in the country is established.Hainan Province is a province in China,which is a typhoon-prone area.Therefore,a secondary topological structure is adopted in Hainan Province.In order to enhance the system's disaster recovery capability,redundant backups and weaker faults are adopted.The four major network elements of the system including switching center,police digital trunking base station,scheduling subsystem,and police digital trunking terminal all play a decisive role in the topology structure.4.Based on the traffic modeling and analysis of all regions in Hainan Province,the base station carriers are optimized.According to the principle of frequency planning for police digital trunking systems,the frequency of each area in Hainan Province is planned in a unified manner,forming the final province-wide frequency planning scheme.The performance of the police digital trunking system built in the later stage is maximized.Furthermore,the communication efficiency is effectively improved.
Keywords/Search Tags:Police Digital Trunking, Topology, Teletraffic, Frequency
PDF Full Text Request
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