IMS in mobile network
IMS refers to "IP Multimedia Subsystem". It is a standardised network used for delivering multimedia services, such as voice and video calls to the users.
IMS can be integrated with 2G, 3G, 4G, and 5G mobile networks, providing a unified communication platform for mobile subscribers.
While 2G/3G networks are having a Circuit Switched Core Network (CS Core) that can be used to deliver voice calls to the users, the 4G and 5G networks are having only a packet core network.
Therefore, IMS integration is essential in case of 4G and 5G networks, in order to be able to deliver voice and video calls to the users by using VoLTE and VoNR respectively.
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VoLTE (Voice over LTE) Introduction
While the UE attached to LTE network, the UE can initiate, or receive a voice or a video call. The UE achieves this, by connecting to an external network, which is the 'IMS' network. We can call this, Voice over LTE (VoLTE). This is exactly like when you would like to create a call, while…
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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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