What are advantages of SGSN and GGSN?
SGSN helps in the services within a network, whereas GGSN helps in the gateway outside the network. Also, the Packet Control Unit or PCU is present in the network that helps to determine where the data should be routed. It is either given to packet-switched or circuit-switched networks in the system.
What is difference between GSM and GPRS?
The GSM is a circuit-switched type of network. The GPRS is a packet-switched type of network. The GSM technology provides a data rate of about 9.6 kbps (kilobytes per second) for all of its users. The GPRS technology provides a data rate of about 14.4 kbps to 115.2 (kilobytes per second) for all of its users.
What is difference between LTE and GSM?
GSM supports both cellular and data, whereas LTE is synonymous with high-speed wireless broadband technology that supports only data. This is why most of the new cell phones use LTE for high-speed internet access and rely on GSM for voice calls.
What is difference between GSM & CDMA?
GSM stands for Global System for Mobile communication, while CDMA stands for Code Division Multiple Access GSM uses FDMA (Frequency division multiple access) and TDMA (Time division multiple access). GSM supports transmitting data and voice both at once, but CDMA does have not this feature.
Why is tunneling needed between the GGSN and SGSN?
In order to reduce the load of passing the user plan data by the SGSN, the SGSN may decide to establish direct tunneling between the RNC and the GGSN.
How do SGSNs and GGSNs communicate with each other?
SGSNs and GGSNs use the ‘ Gn interface ‘ in the communication between each other. In case the SGSNs exist in different PLMN than the GGSNs, this interface name will be the ‘Gp interface’ The protocol stack for Gn/Gp interface shows that it uses TCP/IP in the network packet routing between different nodes.
What is GGSN and how does it work?
GGSN stands for Gateway GPRS Support Node and it is a network component that connects the GSM and UMTS mobile networks to external packet networks. The word ‘packet’ is important in this context because GGSN is all about packet-switched networks that enable mobile data.
What is SGSN in GSM?
SGSN stands for Serving GPRS Support Node, and it is an essential network entity in GPRS (General Packet Radio Service), EDGE (Enhanced Data for Global Evolution) and 3G UMTS networks. SGSN (together with GGSN) was added to introduce the packet-switched technology within 2G GSM networks.
What is Gn/Gn interface?
Gn interface. SGSNs and GGSNs use the ‘Gn interface’ in the communication between each other. This interface is named ‘Gp interface’ in case the SGSNs exist in different PLMN than the GGSNs. The protocol stack for Gn/Gp interface shows that it uses TCP/IP in the network packet routing between different nodes.