17 Questions
What is the maximum number of Bandwidth Parts (BWP) that a UE can be configured with for both downlink and uplink in NR?
4
Which frequency band supports a channel bandwidth of 90 MHz in 5G NR?
FR1
What is the purpose of Bandwidth Part (BWP) in NR?
To enable UEs to operate in narrow bandwidth and expand to wider bandwidth when needed
Which type of Carrier Aggregation (CA) is supported in NR across different frequency bands?
Both Intra-band and Inter-band CA
What is the maximum overall transmission bandwidth achievable by aggregating Component Carriers (CC) in 5G NR?
6.4 GHz
What are the parameters included when gNB configures a Bandwidth Part (BWP)?
BWP Numerology, BWP bandwidth size, Frequency location (NR-ARFCN), CORESET
How is the bandwidth of a Bandwidth Part (BWP) configured for each UE?
According to the UE capability on supported maximum bandwidth
What does the text say about the possibility of serving multiple UEs with different bandwidth capabilities in a single wideband NR carrier?
It is feasible due to configuring multiple BWPs with different numerologies
What feature supports UE power saving by configuring a Bandwidth Part (BWP) narrower than the supported maximum bandwidth?
BWP adaptation
Which feature allows for switching between Bandwidth Parts (BWPs) with different bandwidths and/or numerologies?
BWP adaptation
Why is dual connectivity needed to support carrier aggregation between LTE and NR?
NR does not support carrier aggregation with LTE
What is the frequency range for the 600 MHz spectrum band used for IMT services?
663-703 MHz
Which frequency band has a bandwidth of 80 MHz and is used for backhaul purposes?
3300 MHz
What is the frequency range for the E band primarily used for backhaul?
71-76/81-86 GHz
In the IMT services spectrum, which band provides a bandwidth of 25 MHz?
900 MHz
What is the total bandwidth range for the low bands used by Telecom Service Providers?
600-1800 MHz
Which band falls under the category of Microwave Backbone Bands?
6 GHz
Study Notes
NR Channel Bandwidth
- FR1 frequency band: 450 MHz – 6000 MHz, supported channel bandwidths: 5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 90, 100 MHz
- FR2 frequency band: 24250 MHz – 52600 MHz, supported channel bandwidths: 50, 100, 200, 400 MHz
- Maximum transmission bandwidth: 6.4 GHz (16 x 400 MHz)
Carrier Aggregation (CA)
- Supported: intra-band CA (within a frequency band) and inter-band CA (across frequency bands)
- Inter-band CA with different numerologies is also supported
Bandwidth Part (BWP)
- Concept introduced in NR for energy efficiency
- UEs can operate in narrow bandwidth and switch to wider bandwidth when needed
- Maximum 4 BWP configurations for DL and UL, but only one is active at a time
- BWP is a contiguous set of resource blocks on a given carrier
- BWP parameters: Numerology (μ), BWP bandwidth size, Frequency location (NR-ARFCN), CORESET
Spectrum Management & Planning
- Spectrum bands: Low Bands (600, 700, 800, 900, 1800, 2100, 2300, 2500 MHz), Mid Band (3300-3670 MHz), Millimeter Wave Band (24.25-27.5 GHz)
- Access Frequency Bands: 600, 700, 800, 900, 1800, 2100, 2300, 2500 MHz
- Backhaul Frequency Bands: Microwave Backbone Bands (6 GHz, 7 GHz), Microwave Access Bands (13 GHz, 15 GHz, 18 GHz, 21 GHz), E band (71-76/81-86 GHz)
Spectrum Assignment
- Mode of Spectrum Assignment: Spectrum Allocations for Cellular mobile/ IMT-
- Old procedure (pre-2012): Separate applications for each stage (LOI, DL, WOL), separate applications for SACFA, Import Licence, and 3-Stage Scrutiny
Test your knowledge on the aggregation of carriers with different bandwidths and duplex schemes in 5G networks. Learn about the supported channel bandwidths in both FR1 and FR2 frequency bands for overall transmission bandwidths up to 6.4 GHz.
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