4G LTE PHYSICAL LAYER (PHY/L1) – 3gpp Spec No 36.211,36.212,36,213, 36.214

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About Course

 

this course serves as a comprehensive guide to the foundational concepts of 4G LTE technology, as defined by the 3GPP standards and specifications. The content and structure of the course are carefully designed to provide a thorough understanding of the LTE air interface, with a special focus on the principles of PHY, MAC, and RRC layer design, and their impact on performance and deployment.

Assuming the audience’s familiarity with Basic Networking concepts the course starts directly with discussions on 4G requirements, system architecture, and protocol layers.

Physical layer structure and channels  are described in detail. Resource allocation schemes, channel Sounding, MIMO features, and beam management are also explained. The course also presents the step by step process followed by a UE from down-link synchronization to Uplink access and operation in the connected mode under power-saving and mobility procedures.

course Highlights

1) Introduction to the Cellular evolution over generations

2) Introduction To Basic terminology:

3) LTE Air Interface eg. TDMA,FDMA,CDMA,WCDMA,OFDMA,SC-FDMA

4) Modulation techniques (AM,FM,PM,BPSK, QPSK,16QAM, 64QAM etc)

5) LTE Layer1 processing

6) Resource allocation on time and frequency domain.

7) Discussion on channel mapping (logical-transport-physical)

8) Detailed discussion of individual physical channel and its mapping on the resource grid

9) Layer2 and its processing

10) Call flow layer 3:

11) Other Important Topics like

             -Introduction to Advance LTE features (carrier aggregation, DLFSS, ULFSS, ANR, SON,

 

DRX,etc)

 

 

 

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What Will You Learn?

  • You will have easy access to comprehensive knowledge of both fundamental and advanced aspects of 5G-NR.
  • Upon completion of the course, your understanding and imagination of the technology will be significantly enhanced.
  • Upon completion of the course, you will have cultivated critical thinking and debugging skills that will enable you to effectively analyze and troubleshoot.

Course Content

Introduction to PHY and Cellular Coverage
Physical layer structure and channels are described in detail. Resource allocation schemes, channel Sounding, MIMO features, and beam management are also explained. The course also presents the step by step process followed by a UE from down-link synchronization to Uplink access and operation in the connected mode under power-saving and mobility procedures.

  • lesson-1
  • lesson -2
  • lesson -3

Spectrum, Bandwidth, EARFCN UL, DL
Physical layer structure and channels are described in detail. Resource allocation schemes, channel Sounding, MIMO features, and beam management are also explained. The course also presents the step by step process followed by a UE from down-link synchronization to Uplink access and operation in the connected mode under power-saving and mobility procedures.

Introduction to in PHY and Radio Frequency Operation
This course serves as a comprehensive guide to the foundational concepts of 4G LTE technology, as defined by the 3GPP standards and specifications. The content and structure of the course are carefully designed to provide a thorough understanding of the LTE air interface, with a special focus on the principles of PHY, MAC, and RRC layer design, and their impact on performance and deployment. Assuming the audience’s familiarity with Basic Networking concepts the course starts directly with discussions on 4G requirements, system architecture, and protocol layers.

Frame Structure – FDD
This course serves as a comprehensive guide to the foundational concepts of 4G LTE technology, as defined by the 3GPP standards and specifications. The content and structure of the course are carefully designed to provide a thorough understanding of the LTE air interface, with a special focus on the principles of PHY, MAC, and RRC layer design, and their impact on performance and deployment. Assuming the audience’s familiarity with Basic Networking concepts the course starts directly with discussions on 4G requirements, system architecture, and protocol layers.

Downlink

Uplink

TDD Configurations – 0-0036

MIMO, MCS, Transmission Modes and Throughputs Effects
In 5G NR, several key technologies such as MIMO (Multiple Input, Multiple Output), MCS (Modulation and Coding Scheme), and Transmission Modes (TMs) contribute significantly to system throughput, reliability, and overall network performance. Understanding how these factors interact and impact throughput is critical for optimizing 5G networks.

Channels – Logical, Transport, Physical
In 5G NR (New Radio), the communication between the User Equipment (UE) and the Next-Generation Node B (gNB) is organized into different layers. These layers communicate using various types of channels, which can be broadly classified into three categories: Logical Channels – Describe what type of information is being transmitted (e.g., control data or user data). Transport Channels – Define how the data is transmitted over the air interface, including error correction and data segmentation. Physical Channels – Represent the actual transmission of data over the radio interface, including modulation, coding, and multiplexing.

PHY Layer Channel Processing – Coding, Scrambling, Rate Matching, Layer Mapping
The 5G NR Physical Layer (PHY) is responsible for preparing data for transmission over the air interface. This involves several critical processing steps to ensure reliable, efficient, and error-resilient communication. Below, we will discuss the key steps in PHY layer channel processing, including Channel Coding, Scrambling, Rate Matching, and Layer Mapping.

SINR, ISI, ICI, RSRP, RSRQ Ranges – Link Quality and Link Adaptation
In 5G NR, link quality metrics like SINR (Signal-to-Interference-and-Noise Ratio), RSRP (Reference Signal Received Power), and RSRQ (Reference Signal Received Quality) are crucial for determining the performance of the radio link. These metrics guide Link Adaptation, which adjusts transmission parameters such as Modulation and Coding Scheme (MCS), bandwidth, and power to optimize throughput and reliability based on prevailing radio conditions.

PHY for Random Access
Random Access (RA) is a crucial procedure in LTE and 5G NR that allows UEs (User Equipment) to establish a connection with the network. This process is handled by the Physical Layer (PHY) through specific signaling and channel procedures. It plays a key role in initial access, handovers, and when the UE is in an idle or inactive state and needs to resume communication.

Rel-10 LTE-Advanced Features – Carrier Aggregation, ICIC, SON, CoMP
LTE-Advanced (introduced in 3GPP Release 10) is an enhancement of LTE (Release 8/9) that aims to achieve higher data rates, increased spectral efficiency, better network capacity, and improved coverage. Several advanced technologies were introduced in LTE-Advanced (Rel-10), including: Carrier Aggregation (CA) Inter-Cell Interference Coordination (ICIC) Self-Organizing Networks (SON) Coordinated Multi-Point (CoMP)

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