SCTP protocol in Mobile Networks
SCTP (Stream Control Transmission Protocol) is a transport layer protocol that is an alternative to TCP (Transmission Control Protocol) and UDP (User Datagram Protocol). It can provide reliable, message-oriented communication, with support for multi-homing.
SCTP is widely used as the transport protocol for signalling in mobile networks. As its multi-homing capabilities, allow mobile network elements to have multiple IP addresses. This enables load balancing, and provides redundancy in case of network or device failures.
-
What is an ‘EPS Bearer’ in LTE ?
During 'LTE attach' procedure, the network establishes this EPS Bearer between the UE and the PGW. The PGW assigns an IP address for this Bearer. The UE uses this IP address, in order to communicate with the PDN. In addition, the PGW assigns a QoS for this Bearer, which guarantees the QoS for the data…
-
LTE (4G) Network Architecture
LTE (4G) Network Nodes LTE refers to 'Long Term Evolution', and the architecture of the LTE (4G) network is as following, eNodeB The eNodeB is the 4G site that the UE connects to. It provides the radio interface to the UE. MME MME refers to 'Mobility Management Entity'. The MME is responsible for authenticating the…
-
SGSN, GGSN – 2G/3G Network Architecture and Interfaces
2G/3G Network Nodes The following graph shows the 2G/3G Network Architecture. It includes the SGSN, GGSN, HLR, CG, PDN, RNC, and BSC. SGSN GGSN, HLR, CG, PDN, RNC, BSC, 2G/3G Network Interfaces Now we know the nodes that exist in the 2G/3G network. Let's learn the interface names that exist between those nodes. Every interface…
Online Course