10 Questions
What technique is used in 5G NR to reduce interference between subcarriers?
CP-OFDM
Which of the following frequency bands is used for high-bandwidth and low-latency applications in 5G NR?
Millimeter wave (mmWave)
What is the primary benefit of using SC-FDMA in 5G NR for uplink transmission?
Improving spectral efficiency and reducing power consumption
What is the initial deployment mode of 5G NR?
NSA (Non-Standalone) deployment
What technology allows multiple independent networks to coexist on the same physical infrastructure in 5G NR?
Network slicing
What is the maximum peak speed reached by 5G NR?
20 Gbps
What is the minimum latency provided by 5G NR?
1 ms
What is the 5G NR equivalent of the LTE eNodeB?
gNB
What is the technique used by 5G NR to increase spectral efficiency?
OFDM
What type of applications is 5G NR suitable for due to its low latency and high reliability?
Autonomous vehicles and smart grids
Study Notes
5G NR Overview
- 5G NR (New Radio) is a 5G wireless network standard designed to provide faster data speeds, lower latency, and greater connectivity than its predecessor, 4G LTE.
- Developed by the 3GPP (3rd Generation Partnership Project) organization, 5G NR is a global standard for 5G wireless communication.
Key Features
- Increased bandwidth: 5G NR supports much higher bandwidth than 4G LTE, with peak speeds reaching up to 20 Gbps.
- Lower latency: 5G NR reduces latency to as low as 1 ms, enabling real-time communication and responsive applications.
- Massive machine-type communications: 5G NR supports a large number of devices, making it suitable for IoT (Internet of Things) applications.
- Ultra-reliable low-latency communications: 5G NR provides reliable and fast communication for mission-critical applications, such as autonomous vehicles and smart grids.
Architecture
- 5G NR base station: The base station is responsible for transmitting and receiving data to and from devices.
- gNB (Next-Generation NodeB): The gNB is the 5G NR equivalent of the LTE eNodeB, responsible for controlling the radio resources.
- UE (User Equipment): The UE is the device used by the end-user to access the 5G network.
Physical Layer
- OFDM (Orthogonal Frequency Division Multiplexing): 5G NR uses OFDM to divide the available bandwidth into multiple subcarriers, increasing spectral efficiency.
- CP-OFDM (Cyclic Prefix OFDM): CP-OFDM is used in 5G NR to reduce interference between subcarriers.
- SC-FDMA (Single-Carrier Frequency Division Multiple Access): SC-FDMA is used in 5G NR for uplink transmission, providing better spectral efficiency and lower power consumption.
Spectrum and Bands
- Frequency bands: 5G NR operates on a range of frequency bands, including low-band (e.g., 600 MHz), mid-band (e.g., 2.5 GHz), and high-band (e.g., 24 GHz) frequencies.
- Millimeter wave (mmWave): 5G NR uses mmWave frequencies (e.g., 24 GHz, 28 GHz) for high-bandwidth and low-latency applications.
Deployment and Rollout
- ** NSA (Non-Standalone) deployment**: 5G NR is initially deployed in NSA mode, using the LTE network as an anchor for 5G services.
- SA (Standalone) deployment: 5G NR will eventually be deployed in SA mode, using a 5G-only core network.
- Network slicing: 5G NR supports network slicing, allowing multiple independent networks to coexist on the same physical infrastructure.
Learn the fundamentals of 5G NR, including its key features, architecture, physical layer, spectrum, and deployment. Understand the benefits and applications of 5G NR technology.
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