The 3G MSC functions are divided into two parts, i.e., MSC server and media gateways. The MSC server contains call control and mobility management logic. The MSC server also contains a VLR to hold mobile subscriber service data. The media gateway contains the switching function and is controlled by the MSC server.
What are the functions provided by 3G GGSN?
The 3G-GGSN provides the following functions: Maintain information locations at SGSN level (macro-mobility) Gateway between UMTS packet network and external data networks (e.g. IP, X. 25)
What are the main components and functions of 3G architecture?
Description of 3G architecture: User Equipment
The 3G system consists of two main parts: the User Equipment (UE) and the UMTS Terrestrial Radio Access Network (UTRAN). The UE is the mobile phone and the UTRAN is the base station and the network intelligence. Both the UE and the UTRAN are composed of different layers.
What are the functions of UMTS?
As for all mobile systems, UMTS provides wireless communication services to users on the move. The system supports roaming, that is the UMTS users can be reached and they can place calls where ever they are located within the coverage area of UMTS.
What is the function of 3G?
3G finds application in wireless voice telephony, mobile Internet access, fixed wireless Internet access, video calls and mobile TV. 3G telecommunication networks support services that provide an information transfer rate of at least 144 kbit/s.
What is the function of SGSN?
A SGSN is responsible for the delivery of data packets from and to the mobile stations within its geographical service area. Its tasks include packet routing and transfer, mobility management (attach/detach and location management), logical link management, and authentication and charging functions.
What is GGSN and SGSN?
A Gateway GPRS Support Node (GGSN) is part of the core network that connects GSM-based 3G networks to the Internet. The GGSN, sometimes known as a wireless router, works in tandem with the Serving GPRS Support Node (SGSN) to keep mobile users connected to the Internet and IP-based applications.
What are the two parts of 3G bearer services?
The UMTS bearer service consists of two parts, the radio access bearer service and the core network bearer service.