Research Of The Centralized Supervision And Control System For Mobile Local Switching Network

Today, information Science is developed quickly, in order to increasethe administration of network's quality, administer large network efficientlyand betimes, telecommuciation businessman change administrationgradually from uprightness to flat, and save manpower, enhance labourefficiency. It is tendency for telecommuciation businessman to controlseparate facility remotely .China Mobile faces the problem of manpower scarcity with networkadvancement and complexity. The TMN that ITU-T brought forward is thebase of mobile commuciation network administration. The main purpose ofthis document is to found a control centrally exchange system with highexpansibility, ensure the dependability, efficiency and timeliness of network.1. System handware structureSystem is based on the TopDown idea to design, use openingClient/Server system structure, make it easy to adapt the requirement ofdifferent functions configuration, it accords with TMN physical structuresystem criterion, based on different geographic exchange rooms, divideremote physical link into short distance, long distance , single facility remotelink and large number of facilities with the same address remote link.The exchange facility at the same place with the monitor center, useRS232 port to link, or use TCP/IP of LAN exchanger. For single facilityremote link, we hire DDN to solve it, large number of facilities with the sameaddress, many kinds of ports, if we use DDN to do it, it must waste a lot ofmoney, can't take fully advantage of mobile self-build transmission. We useTDM (Time Division Multiplexing), it can multiplex different information on2M transmitting circuit, solve the problem of data transmission. For thefacilities if using Ether's port, with router to link, 2M circuit to transmit, divideinto different VLAN, construct WAN to link monitor center with remoteexchanger. We construct remote facility network structure of ChangchunMobile exchange local network like this.2. System software structureAfter facilities are remotely linked, in order to unite the information outputof all kinds of exchangers, it requires to transform the data, there are twomeans to receive serial commuciation data, to query and to drive. Thequerying technique fits little data transmission, computer s obtain datathrough detecting port. Driving technique fits a great deal data transmission.After it receives a fixed portion data, it notifies the computer, waiting it toresponse. Computer receives its request, it receives data with interruptingtechnique, in order to reduce time delay, and obtain data in time.The entire software system gives us an opening system advanced B/Sdistributing model, make user apply computing all kinds of informationconveniently, finish operating course with distributing mode, each dialog inthe operating course is detected by ED, and corresponding Broker disposesit. Broker is entity to dispose event, possesses special function. It providesservice to other Brokers, and disposes event with its special function.Broker can also require other Brokers to provide service if it needs, everyBrother should enroll its service to system, include service name, numeralideograph, transferring parameter, and response result, and abnormity incourse, etc. System corresponds event with its service through ECA.3. The means to realize data interfaceThe software data interface of this system based on Web Client/Server todesign. It based its own Web server on WINNT system, it can publicizesome analysis static data, etc. can publicize dynamic data for ORACLEdatabase on network with WEB in C BULDER, or WEB.PB in POWERBULDER, or Microsoft ASP, etc. a client logins the LAN of monitor centerthrough network, looks for data it needs, and feeds back result, achievesmutual information. Client makes a request to server, an server sends the...