VoLTE IMS High level Architecture and E2E Call Flow

VoLTE IMS High level Architecture and E2E Call Flow

In this video we’ll take a quick look at how VoLTE and IMS work together. First, we’ll go over the high-level architecture of VoLTE and IMS, showing the main network components involved in delivering voice over LTE. Then, we’ll briefly explain the end-to-end call flow in IMS—how a call is initiated, how SIP messages are exchanged, and how the connection is set up between two users. This is just a simple overview to help you understand the core concepts without going too deep.

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5G HARQ Explained: Soft Combining, HARQ Processes, ACK/NACK Timing, Codebook Types, Spatial Bundling, and 4G vs 5G Differences (Article)

5G HARQ Explained: Soft Combining, HARQ Processes, ACK/NACK Timing, Codebook Types, Spatial Bundling, and 4G vs 5G Differences (Article)

Introduction * HARQ is one of the most important reliability mechanisms in the 5G MAC layer. It directly affects retransmission speed, uplink control overhead, latency, and overall scheduling efficiency. * In simple words, HARQ gives 5G a fast retransmission loop. It helps recover transmission errors much faster than higher-layer recovery, which is

By Mohamed ELAdawi