2 Overall design of mobile communication network monitoring system 2.1 Hierarchical structure analysis Mobile communication multi-service intelligent monitoring system is a wireless communication multi-service simulation platform based on GSM network. The simulation platform can load different services according to needs and analyze and evaluate their operating quality to meet the needs of various mobile services. In addition, the platform can also establish a connection with the BSC and conduct in-depth analysis of network failures by comparing upstream and downstream signaling during specific communications. 3 Realization of mobile network monitoring system 3.1 Hardware design and analysis in the monitoring platform The hardware core equipment of this system consists of monitoring points placed near the base station or repeater (main), and they are dialed and tested through the server terminal. The monitoring point terminal system is composed of a mobile phone terminal and a control system. The terminal system receives server commands, conducts business tests, and sends the test results to the server control terminal in a short message for query.
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The mobile communication network intelligent monitoring system was developed to monitor the communication quality of the mobile communication network in real time, thereby providing a strong scientific basis for the mobile communication network optimization staff to optimize the network. China's mobile communication is developing rapidly, and the corresponding network management and maintenance levels are lagging, resulting in urgent problems such as insufficient communication capacity, unreasonable cell division and traffic distribution, severe co-channel interference, and poor wireless coverage.
The monitoring system usually has two structural forms: centralized and distributed. The former has the advantages of simple structure and low cost, but because the signal cable is too long, the signal is easily distorted and susceptible to interference, and the increase in the number of data acquisition channels and storage results in poor real-time monitoring, which is only suitable for fewer measurement points and comparison Centralized occasions; the latter is highly reliable, easy to expand, and suitable for large-scale and scattered monitoring sites. According to the characteristics of the mobile communication network distribution, in order to be able to monitor the communication quality of the mobile communication network at any point, a distributed monitoring system must be adopted. The intelligent monitoring system designed in this paper is distributed.
From the architecture, the intelligent monitoring system generally includes 3 levels:
(1) The data collection layer mainly includes a data collection front-end composed of an intelligent data collection module and a data upload function.
(2) The network communication layer mainly completes the data transmission between the collection terminal and the monitoring center.
(3) The monitoring center layer is mainly for management personnel with management and scheduling authority, where the computer completes centralized monitoring.
2.2 The structural design of the system According to the characteristics of the discrete distribution of terminal monitors, the mobile communication network intelligent monitoring system uses a distributed monitoring system. The whole system is mainly composed of terminal monitoring subsystem, monitoring center and communication network.
(1) Test monitoring subsystem: The test monitoring subsystem can be distributed at any test monitoring point and is responsible for collecting the content to be monitored by the monitoring system, and at the same time, it can send the collected data to the monitoring center by short message according to the designed protocol. The terminal monitoring subsystem is composed of GSM module and test control. It is used to test the relevant parameters of the network communication quality of the mobile network at a fixed point. At the same time, the data can be transmitted to the monitoring center in a timely manner using short messages. This system is realized by single chip microcomputer.
(2) Mobile short message service center: complete the short message mutual sending function between the terminal monitoring subsystem and the monitoring center in the system.
(3) Monitoring center: Data exchange with each terminal monitor through short message, so as to set the working parameters of the terminal monitor and control them to collect data. At the same time, the software system of the monitoring center can analyze and process the data transmitted by the terminal monitoring subsystem to provide query and report functions for the mobile network maintenance staff. Therefore, the monitoring center must design and develop a set of independent software systems.
The hardware of the monitoring system mainly uses two sets of terminal equipment. The terminal equipment is composed of a mobile phone terminal and a terminal control system: one set is a control terminal system placed on the monitoring main server side, which is responsible for sending test commands and receiving test data, and transferring the data to The monitoring server of the monitoring system; the other set is placed in monitoring. The terminal receives server commands, conducts business tests, and sends the test results to the control terminal in the form of short messages. Both systems are identical in terms of hardware, but differ in specific control procedures.
3.2 Analysis of software design in the monitoring platform The general principle of the design of the mobile service monitoring system platform software is: to carry out hierarchical and modular design without affecting the normal operation of the existing network or reducing the performance and security of the original network , Not only centralized operation and maintenance, but also flexible upgrade and expansion. The main components of the network monitoring system are as follows: monitoring master server, monitoring slave server and DB server as examples for analysis.
(1) Monitoring the main server It is the core of the monitoring system. Complete all functions of the monitoring system, including: user management strategy, interface configuration of the monitoring system (055 interface, DB server, slave server, monitoring point, SMS, GPRS), processing units for different services (voice / SMS / GPRS), Signaling analysis and statistical index formation module, alarm information processing and generation, data collection and analysis module, platform configuration module and diary file system. A monitoring system can only have one main server.
(2) Monitoring the slave server The slave server is a WebService server. A monitoring system can be composed of multiple slave servers, and corresponding slave servers can be added to expand functions according to different business needs. The direct communication between the master server and the slave server is through SOAP (Simple Object Access Protocol) based on XML. Its functions are the customization and scheduling of monitoring tasks, SMS text messaging and configuration management.
(3) DB server The database server mainly completes the storage of data: basic data, statistical information and other designed data storage. The data interaction between each server and DB through ADO.NET efficient data access technology and SQL statements.
4 Conclusion In order to realize the monitoring of mobile communication networks with different structures, this research paper mainly designs and analyzes the mobile network monitoring system, gives the hierarchical structure and structural design of the monitoring system, and designs the hardware and software for implementing the monitoring system. The plan was discussed. In view of the rapid development of mobile communications, the contradiction between limited spectrum resources and a huge number of users is increasingly prominent. How to accurately monitor the communication quality of mobile communication networks so that the network can be optimized reasonably has always been an important topic of mobile communication. R & D work has great practical value.
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