UDP protocol in Mobile Networks
UDP "User Datagram Protocol", is a protocol that works in the transport layer in OSI protocol suit. It is a connection-less, unreliable, and lightweight transport layer protocol.
It does not guarantee reliable data delivery. Packets may be lost, duplicated, or delivered out of order, and there is no mechanism for re-transmission or error checking.
UDP is suitable for real-time applications like Voice over IP (VoIP), video streaming, online gaming, and internet telephony. This is because these applications can tolerate some packet loss, making UDP a more suitable choice than the connection-oriented and reliable Transmission Control Protocol (TCP).
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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…
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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…
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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…
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