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02_GSM_HSCSD_GPRS.pdf

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Department of Computer Science Institute for System Architecture, Chair for Computer Networks GSM (Global System for Mobile Communications) and Extensions Mobile Communication and Mobile Computing Prof. Dr. Alexander Schill http://www.rn.inf.tu-dresden.de GSM: Properties ã cellular radio network (2nd Generation) ã digital transmission, integrated data communication ã roaming (mobility between different network operators) ã good transmission quality (error detection and - correction) ã s
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  GSM (Global System for Mobile Communications) and Extensions Mobile Communication and Mobile Computing Prof. Dr. Alexander Schillhttp://www.rn.inf.tu-dresden.de Department of Computer Science Institute for System Architecture, Chair for Computer Networks  GSM: Properties ãcellular radio network (2nd Generation)ãdigital transmission, integrated data communicationãroaming (mobility between different network operators)ãgood transmission quality (error detection and -correction)ãscalable (large number of participants possible)ãsecurity mechanisms (authentication, authorization, encryption)ãgood resource use (frequency and time division multiplex)ãintegration with fixed telephone networkãstandard (ETSI, European Telecommunications Standards Institute) 2  GSM: Structure 3 AuCAuthentication CenterBSS Base Station SubsystemBSCBase Station ControllerBTSBase Transceiver StationEIREquipment Identity RegisterHLRHome Location Register Fixednetwork Switching SubsystemsVLRRadio SubsystemsHLRAuCEIR(G)MSCOMCBTSBTSBSCBSSMSMSNetwork ManagementCall ManagementData networksPSTNMSMSMobile Station(G)SMC(Gateway) Mobile Switching CenterOMCOperation and Maintenance CenterPSTNPublic Switched Telephone NetworkVLRVisitor Location Register  GSM: Structure ãOperation and Maintenance Center (OMC)ãlogical, central structure with HLR, AuC und EIRãAuthentication Center (AuC)ãauthentication, storage of symmetrical keys, generation of encryption keysãEquipment Identity Register (EIR)ãstorage of device attributes of allowed, faulty and blocked devices (white, gray, black list)ãMobile Switching Center (MSC)ãnetworking center, partially with gateways to other networks, assigned to one VLR eachãBase Station Subsystem (BSS): technical radio centerãBase Station Controller (BSC): control centerãBase Transceiver Station (BTS): radio tower / antenna 4

37-288-532

Apr 16, 2018
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