Mobile networks
From Yate Documentation
(Difference between revisions)
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The network and switching subsystem(NSS) | The network and switching subsystem(NSS) | ||
| − | * Home location register(HLR) - holds all subscribers in a network. Keeps subscriber specific information like MSISDN, IMSI, current location of the MS, roaming restrictions, additional features. | + | * Home location register (HLR) - holds all subscribers in a network. Keeps subscriber specific information like MSISDN, IMSI, current location of the MS, roaming restrictions, additional features. |
| − | * | + | * Authentication Center (AuC) - handles the authentications and encryption in a network. It is typically located with the HLR |
| − | * EIR | + | * Equipment inquiry register (EIR) - tracks of handsets on the network using the International Mobile Equipment Identity (IMEI). There is only one EIR per network. It is composed of three lists. The white list, the gray list, and the black list. |
* Mobile switching center (MSC) - handles call routing, call setup, and basic switching functions. Does inter BSC handoffs and coordinates inter MSC handoffs | * Mobile switching center (MSC) - handles call routing, call setup, and basic switching functions. Does inter BSC handoffs and coordinates inter MSC handoffs | ||
* GMSC | * GMSC | ||
* Visitor location register (VLR) - is associated a local area(LA). Keeps information similar to the one in the HLR for the users in it's current local area | * Visitor location register (VLR) - is associated a local area(LA). Keeps information similar to the one in the HLR for the users in it's current local area | ||
Revision as of 13:43, 10 October 2012
A mobile network is composed by the following parts:
- Mobile Station (MS)
- The base stations subsystems (BSS)
- The network and switcing subsystem (NSS)
- The operations and support subsystem (OSS)
Mobile Station (MS):
- the mobile equipment (Ex: phone)
- the SIM (Subscriber identity Module) card that uniquely identified the card by the IMSI (International Mobile Subscriber Identity).
The base station subsystem (BSS):
- base station (BTS) - it defines a cell in the network
- base station controller (BSC) - controls a group of BTSs. Does handoffs, frequency hoppings, exchange functions and power control over each managed BTS
The network and switching subsystem(NSS)
- Home location register (HLR) - holds all subscribers in a network. Keeps subscriber specific information like MSISDN, IMSI, current location of the MS, roaming restrictions, additional features.
- Authentication Center (AuC) - handles the authentications and encryption in a network. It is typically located with the HLR
- Equipment inquiry register (EIR) - tracks of handsets on the network using the International Mobile Equipment Identity (IMEI). There is only one EIR per network. It is composed of three lists. The white list, the gray list, and the black list.
- Mobile switching center (MSC) - handles call routing, call setup, and basic switching functions. Does inter BSC handoffs and coordinates inter MSC handoffs
- GMSC
- Visitor location register (VLR) - is associated a local area(LA). Keeps information similar to the one in the HLR for the users in it's current local area
