pdf_gross.gif5G NSA: RAN & New Radio in first commercial networks

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

backtotop.gifTraining Course Description

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  • 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?

backtotop.gifPre-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.

backtotop.gifTraining 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.

backtotop.gifTraining Course Duration

  • 2.5 days

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