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Bandwidth Part (BWP)
Concept in 5G
@3g4gUK
Channel Bandwidth in 4G (LTE/LTE-A/LTE-A Pro)
©3G4G
4G Bandwidths
(MHz)
1.4 3 5 10 15 20
3GPP defined 5G Spectrum Ranges
©3G4G
3.3 3.8
4.2
4.4 5.0
24.25 27.5
29.5 37 40
26.5
n78 n79
n77
n258
n260
n261
28.35
n257
Bandwidth
900 MHz
500 MHz
600 MHz
3000 MHz (3 GHz)
3250 MHz (3.25 GHz)
3000 MHz (3 GHz)
850 MHz
• 3GPP defines new NR (New Radio) bands in FR1 and FR2 in 3GPP
Rel.15 NR
• FR1: 450 MHz – 6 GHz
• Upper range is changing to 7.125 GHz
• FR2: 24.25 GHz – 52.6 GHz
Bandwidth of FR1 5G bands
©3G4G
Channel Bandwidth in 5G: FR1
©3G4G
5G FR1 Bandwidths
(MHz)
5 10 15 20 25 30 40 50 60 80 90 100
…
Bandwidth of FR2 5G bands
©3G4G
Channel Bandwidth in 5G: FR2
©3G4G
5G FR2 Bandwidths
(MHz)
50 100 200 400
Carrier Bandwidth Part (BWP)
©3G4G
Picture Source:
Rohde & Schwarz
Why BWP?
©3G4G
• In LTE, maximum BW is 20 MHz
• Its easy for all devices to support this bandwidth
• In 5G NR, maximum BW is 400 MHz for FR2
• Cheaper devices may not want to support this large bandwidth
• A device does not need to monitor the whole of bandwidth for power
consumption reduction
• BWP allows device-side receiver ‘bandwidth adaptation’ to reduce the device
energy consumption
• A small BW is used for monitoring control channels and receiving low/medium
data rates, while dynamically using a wideband receiver only when needed to
support very high data rates.
• Rel-15 only supports single active BWP but this will change in future releases
BandWidth Part (BWP) in Specs
©3G4G
• BWP was referred to as ‘Carrier Bandwidth Part’ in
early version of 3GPP TS 38.211:4.4.5 but renamed as
Bandwidth Part in the latest version
• BWP is a contiguous set of physical resource blocks
(PRB), selected from a contiguous subset of the
common resource blocks (CRB) for a given numerology
on a given carrier. It can be illustrated as shown.
• A UE can be configured with up to 4 BWPs in the
downlink and with up to 4 BWPs in the uplink with a
single downlink bandwidth part being active at a given
time.
• If a UE is configured with a supplementary uplink (SUL),
the UE can in addition be configured with up to four
bandwidth parts in the supplementary uplink with a
single supplementary uplink bandwidth part being
active at a given time. Picture Source: ShareTechNote
BWP Configuration & Switching Signalling
©3G4G
Picture Source:
Rohde & Schwarz
5G DCI (Downlink Control Information)
©3G4G
For more details see: ShareTechNote
BWP Switching
©3G4G
Picture Source:
Rohde & Schwarz
Free eBook from Rohde & Schwarz (coming soon)
©3G4G
The 5G New Radio eBook from Rohde & Schwarz
Thank You
To learn more, visit:
3G4G Website – http://www.3g4g.co.uk/
3G4G Blog – http://blog.3g4g.co.uk/
3G4G Small Cells Blog – http://smallcells.3g4g.co.uk/
Operator Watch - http://operatorwatch.3g4g.co.uk/
Follow us on Twitter: https://twitter.com/3g4gUK
Follow us on Facebook: https://www.facebook.com/3g4gUK/
Follow us on Linkedin: https://www.linkedin.com/company/3g4g
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©3G4G

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Intermediate: Bandwidth Parts (BWP)

  • 2. Channel Bandwidth in 4G (LTE/LTE-A/LTE-A Pro) ©3G4G 4G Bandwidths (MHz) 1.4 3 5 10 15 20
  • 3. 3GPP defined 5G Spectrum Ranges ©3G4G 3.3 3.8 4.2 4.4 5.0 24.25 27.5 29.5 37 40 26.5 n78 n79 n77 n258 n260 n261 28.35 n257 Bandwidth 900 MHz 500 MHz 600 MHz 3000 MHz (3 GHz) 3250 MHz (3.25 GHz) 3000 MHz (3 GHz) 850 MHz • 3GPP defines new NR (New Radio) bands in FR1 and FR2 in 3GPP Rel.15 NR • FR1: 450 MHz – 6 GHz • Upper range is changing to 7.125 GHz • FR2: 24.25 GHz – 52.6 GHz
  • 4. Bandwidth of FR1 5G bands ©3G4G
  • 5. Channel Bandwidth in 5G: FR1 ©3G4G 5G FR1 Bandwidths (MHz) 5 10 15 20 25 30 40 50 60 80 90 100 …
  • 6. Bandwidth of FR2 5G bands ©3G4G
  • 7. Channel Bandwidth in 5G: FR2 ©3G4G 5G FR2 Bandwidths (MHz) 50 100 200 400
  • 8. Carrier Bandwidth Part (BWP) ©3G4G Picture Source: Rohde & Schwarz
  • 9. Why BWP? ©3G4G • In LTE, maximum BW is 20 MHz • Its easy for all devices to support this bandwidth • In 5G NR, maximum BW is 400 MHz for FR2 • Cheaper devices may not want to support this large bandwidth • A device does not need to monitor the whole of bandwidth for power consumption reduction • BWP allows device-side receiver ‘bandwidth adaptation’ to reduce the device energy consumption • A small BW is used for monitoring control channels and receiving low/medium data rates, while dynamically using a wideband receiver only when needed to support very high data rates. • Rel-15 only supports single active BWP but this will change in future releases
  • 10. BandWidth Part (BWP) in Specs ©3G4G • BWP was referred to as ‘Carrier Bandwidth Part’ in early version of 3GPP TS 38.211:4.4.5 but renamed as Bandwidth Part in the latest version • BWP is a contiguous set of physical resource blocks (PRB), selected from a contiguous subset of the common resource blocks (CRB) for a given numerology on a given carrier. It can be illustrated as shown. • A UE can be configured with up to 4 BWPs in the downlink and with up to 4 BWPs in the uplink with a single downlink bandwidth part being active at a given time. • If a UE is configured with a supplementary uplink (SUL), the UE can in addition be configured with up to four bandwidth parts in the supplementary uplink with a single supplementary uplink bandwidth part being active at a given time. Picture Source: ShareTechNote
  • 11. BWP Configuration & Switching Signalling ©3G4G Picture Source: Rohde & Schwarz
  • 12. 5G DCI (Downlink Control Information) ©3G4G For more details see: ShareTechNote
  • 14. Free eBook from Rohde & Schwarz (coming soon) ©3G4G The 5G New Radio eBook from Rohde & Schwarz
  • 15. Thank You To learn more, visit: 3G4G Website – http://www.3g4g.co.uk/ 3G4G Blog – http://blog.3g4g.co.uk/ 3G4G Small Cells Blog – http://smallcells.3g4g.co.uk/ Operator Watch - http://operatorwatch.3g4g.co.uk/ Follow us on Twitter: https://twitter.com/3g4gUK Follow us on Facebook: https://www.facebook.com/3g4gUK/ Follow us on Linkedin: https://www.linkedin.com/company/3g4g Follow us on Slideshare: https://www.slideshare.net/3G4GLtd Follow us on Youtube: https://www.youtube.com/3G4G5G ©3G4G