Just Remind me!: Architecture of CDMA system

Architecture of CDMA system

MSC

It's responsible for setting up, managing and clearing connections as routing the calls to the proper user.
It provides network interfaces, the charging function and the function of processing the signalling.
MSC get data for call handling from 3 database: VLR/HLR/AUC

VLR

It stores all related information of mobile subscribers that enter its coverage area, which enables MSC to set up incoming and outgoing calls.
Subscriber parameters: subscriber number, location area identity (LAI), user's status, services which subscriber can use and so on.
When the subscriber leaves this area, it should register in another VLR, and the previous VLR will delete all the data about this subscriber.
VLR can be built together with the MSC or set separately.

HLR

It's a sttic database. When a user apply for mobile service, all data about this subscriber will be stored in HLR.
Subscriber information (ESN, MDN, IMSI, MIN), service information and valid term.
The mobile subscriber location (MSC/VLR address), so as to set up the call route to the MS.
HLR can be built together with the MSC or set separately.

Auc

Conception: It's an entity to prevent illegalsubscribers from accessing CDMA network. It can generate the parameter to confirm the subscriber's identity.
Database (save MIN, ESN, authentication key)
Generate of random number
Algorithm (Cave algirthm)
AUC can be built separately or together with HLR.

Labels: CDMA

# posted by Uut Pribadi @ 7:30 AM

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