5G NSA: RAN & New Radio in first commercial networks

[2.5-day course, Euro 2,350.- (net) per participant]

Training Course Description

This course addresses the needs of technical engineering staff who require a thorough understanding of 5G with clear focus on NSA-implementations. Still, also the majority of stand-alone related topics, especially in the PHY-layer are taken care of in detail.
This course has been designed to meet the requirements of both: engineering experts to design and test 5G NSA related equipment, in particular on the UE-side and operations staff who require detailed knowledge about 5G NSA network configuration.
The course starts out with a wrap-up of general 5G-topics like performance, time schedule and overview of technical enhancements.
This chapter ends with a detailed analysis of NSA <=> EN-DC and the specifics of NSA-operation, especially in the protocol stack and the setup and combination of 4G-frequencies with 5G-frequencies, both FR1 and FR2.
The whole next chapter is dedicated to RF and PHY-issues of 5G. Starting with a thorough analysis of the specifics of bands in FR1 < 1 GHz, up to 6 GHz and FR 2 > 6 GHz, we describe the particularities of the different subcarrier spacings and how and when they can be deployed.
We continue with a detailed analysis of example bands like bands N78 / N258 for Europe or bands N5 / N260 for the US-market. Together, we calculate the maximum throughput for each example, considering the transmission bandwidth and the different subcarrier spacings.
Next, we investigate IMD-related issues of NSA-operation and means to mitigate these issues.
We also dedicated quite some focus on the analysis of the 5G TDD slot format and which implications and restrictions apply.
This chapter leaves no questions unanswered w.r.t. channels and signals in 5G with clear focus on physical channels and physical signals, e.g. PSS and SSS and the SS-block.
Finally, this chapter provides an introduction into LDPC and polar coding with a performance related comparison between LDPC on one hand and convolutional and turbo coding on the other hand
Focus of the next chapter is on the PHY operation in 5G, clearly highlighting the differences between stand-alone and non-stand-alone operation.
We start with a detailed analysis of the cell search procedure in 5G but continue with the description of PDCCH-operation in 5G, introducing BWP and CORESETS. This part ends with a short presentation of all currently defined DCIs.
We continue with the random access procedure in 5G, pointing out differences between 4G and 5G.
Next comes the analysis of Hybrid-ARQ in 5G, pointing out the operation itself and the differences between uplink and downlink HARQ and between HARQ in 4G and in 5G.
Focus of the next chapter is on mMIMO. Initially, we clarify the terminology and differentiate mMIMO from 2D-MIMO, from beamforming and from spatial multiplexing.
Then we use practical animations to clarify how beamforming operates physically and how antennas look like to enable beamforming.
We take a look on practical antenna designs for mMIMO and which performance gain to expect through beamforming depending on different constraints.
The final chapter is dedicated to the actual operation and signaling to manage NSA-operation. Clear focus is on the radio interface and RRC-signaling but we also investigate the signaling on the terrestrial interfaces, in particular on X2 and S1.
The course ends with the analysis of signaling procedures like SgNB-addition, SgNB-modification and SgNB-release and present and investigate real-life logfiles and extracts.

Some of your questions that will be answered

How precisely does option 3x operate and how does it differ from other options?
How does cell search work with 5G? How is it different between stand-alone and non-stand-alone?
Which bands 4G / 5G are combined with MR-DC in different parts of the world?
To which degree can beamforming mitigate the additional attenuation from operation in the 3.X GHz bands or even in millimeter wave bands?
How do active antennas look like and operate for 5G operation?
Which number of antenna ports provides the optimum performance under which conditions
What is vertical beamforming and when does it make sense to deploy it?
Under which conditions can Inter-Modulation-Distortion (IMD) jeopardize NSA-operation and which options exist to mitigate these RF-related problems?
When will the UE display the 5G icon to the user
What are the implications of deploying different subcarrier spacings with NR?
Which additional problems arise from TDD-operation in cellular vs FDD-operation?
What is the meaning of the GSCN and the SS-block pattern?
How can NR deploy beam-centric operation already in idle mode?
Why is there no more DC-subcarrier?
What are self-contained TTI and dynamic TTI
Which reference signals does NR use and how is this different from 4G?
Which performance gain to expect from mMIMO with more than 8 antenna ports on the network side?
How does uplink beamforming operate?
What are the NR- and MR-DC - specific contents of a UE-Radio-Access-Capability Message
How is a 5G cell added to an existing RRC-connection?

Pre-Requisites

The students need to have basic understanding of 5G.
Besides, the students need to be able to interpret ASN.1 PER-unaligned logfiles
The students must possess detailed understanding of LTE, especially of the PHY-layer.

Training Course Target

The students need to have basic understanding of 5G.
Besides, the students need to be able to interpret ASN.1 PER-unaligned logfiles
The students must possess detailed understanding of LTE, especially of the PHY-layer.

Training Course Duration

2.5 days

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