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Tuesday, August 24, 2021

3GPP's 5G-Advanced Technology Evolution from a Network Perspective Whitepaper


China Mobile, along with a bunch of other organizations including China Unicom, China Telecom, CAICT, Huawei, Nokia, Ericsson, etc., produced a white paper on what technology evolutions will we see as part of 5G-Advanced. This comes not so long after the 3GPP 5G-Advanced Workshop which a blogged about here.

The abstract of the whitepaper says:

The commercialization of 5G networks is accelerating globally. From the perspective of industry development drivers, 5G communications are considered the key to personal consumption experience upgrades and digital industrial transformation. Major economies around the world require 5G to be an essential part of long-term industrial development. 5G will enter thousands of industries in terms of business, and technically, 5G needs to integrate DOICT (DT - Data Technology, OT - Operational Technology, IT - Information Technology and CT - Communication Technology) and other technologies further. Therefore, this white paper proposes that continuous research on the follow-up evolution of 5G networks—5G-Advanced is required, and full consideration of architecture evolution and function enhancement is needed.

This white paper first analyzes the network evolution architecture of 5G-Advanced and expounds on the technical development direction of 5G-Advanced from the three characteristics of Artificial Intelligence, Convergence, and Enablement. Artificial Intelligence represents network AI, including full use of machine learning, digital twins, recognition and intention network, which can enhance the capabilities of network's intelligent operation and maintenance. Convergence includes 5G and industry network convergence, home network convergence and space-air-ground network convergence, in order to realize the integration development. Enablement provides for the enhancement of 5G interactive communication and deterministic communication capabilities. It enhances existing technologies such as network slicing and positioning to better help the digital transformation of the industry.

The paper can be downloaded from China Mobile's website here or from Huawei's website here. A video of the paper launch is embedded below:

Nokia's Antti Toskala wrote a blog piece providing the first real glimpse of 5G-Advanced, here.

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Tuesday, August 17, 2021

'5G RAN Release 18 for Industry Verticals' Webinar Highlights

5G PPP held a virtual workshop on RAN Release 18 for Industry Verticals on June 23rd, 2021. The workshop was organised by 3GPP Market Representation Partners (MRPs): 5G-IA, 5GAA, 5G-ACIA and PSCE.

It features a fireside chat with new 3GPP RAN TSG Chair, Wanshi Chen. In addition to this, the workshop then provides a deep dive on new requirements from verticals, spanning automotive (5GAA), manufacturing (5G-ACIA), critical communications and public safety (TCCA with PSCE), broadcasting and media (5G-MAG), satellite (ESOA), rail (UIC), maritime (IALA) and energy (EUTC).

5G-SOLUTIONS came on board as a 5G PPP project supporting verticals with the 5G-EVE and 5G-VINNI 5G network infrastructures alongside RAN specialists doing standardisation work applicable to multiple verticals.

The video of the webinar is embedded below. In addition, you will find timings of when a particular talk starts and a link to the slides (if shared/available)

Timings:

  • 0:04:21 Fireside chat with Wanshi Chen, Qualcomm and 3GPP RAN TSG Chairman
  • 0:21:00 NTN Requirements in Rel-18 by Nicolas Chuberre, Thales Alenia Space (slides)
  • 0:31:40 Multiple verticals: Andrea Di Giglio, 5G SOLUTIONS (slides)
  • 0:36:35 Media and Broadcasting: David Vargas, BBC and 5G-MAG Chair of CD-T WG, Proposals for 3GPP RAN Rel-18 (slides)
  • 0:43:19 Maritime: Hyounhee Koo, Synctechno and IALA, Maritime Requirements on 3GPP Rel 18 RAN Studies/Works Priorities (slides)
  • 0:46:12 Rail: Ingo Wendler, UIC, NR Narrowband Channel Bandwidth - Railway Use Case (slides)
  • 0:50:02 Utilities: Julian Stafford, EUTC 3GPP RAN Rel-18 Requirements (slides)
  • 0:58:35 Utilities: Erik Guttman, Samsung 5G Smart Energy Infrastructure (slides)
  • 1:05:45 Multiple verticals: Mathew Webb, Huawei and 3GPP RAN 3GPP Release 17 and Release 18 support for industry verticals (slides)
  • 1:15:19 Public Safety/Critical Communications: Tero Pesonen, TCCA Chair, joint presentation with PSCE, 3GPP MRP Mini Workshop: 3GPP Rel 18. Requirements from industry verticals (slides)
  • 1:20:15 Multiple verticals: Thierry Berisot, Novamint and 3GPP RAN, Industry Verticals and Rel-18 RAN (slides)
  • 1:32:56 Manufacturing/IIoT: Michael Bahr, Siemens and 5G-ACIA WG 1Chair and An Xueli, Huawei and 5G-ACIA WG1 Vice Chair 3GPP RAN Rel-18 for Industry Verticals (slides)
  • 1:42:20 Automotive: 5GAA Maxime Flament, CTO Input to RAN 18 Rel-18 Workshop (slides)
  • 1:53:35 Interactive Session 2
  • 2:04:36 Passive IoT for 5G-Advanced, Mathew Webb, Huawei and 3GPP RAN (slides)
  • 2:14:59 Template A for Interactive Session 2
  • 2:20:40 Critical Communications / Public Safety requirements for Release 18 
  • 2:26:00 Closing Remarks

Official page here.

The slide above nicely summarizes 3GPP RAN Verticals up to Release 17.

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Monday, August 9, 2021

Qualcomm Demoes Sub-band Half Duplex (SBHD)


Qualcomm has been busy promoting its advanced 5G solutions these last few months in the run up to Mobile World Congress (MWC). You can find a detailed write-up on their website here as well as a feature which they did with RCR wireless here.

One of the innovations that caught my attention was Sub-band Half-Duplex (SBHD). In the first glance it looks like the Enhanced Interference Mitigation & Traffic Adaptation (eIMTA) solution we discussed long back here.

Their article talks about how their 5G multi-cell over-the-air (OTA) test network can now support subband half-duplex, allowing for more flexible service multiplexing as well as improved latency and coverage. 

While you can get an idea of what SBHD is from the diagram above, here is a video explaining it further.

Let us know what do you think about how important will this feature be in future 5G networks.

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Monday, August 2, 2021

3GPP's 5G-Advanced Workshop Summary

From 28 June to 02 July 2 2021, 3GPP held its first internal workshop on the radio specific content of Release 18, reviewing over 500 company and partner organization’s presentations, to identify topics for the immediate and longer-term commercial needs for:

  • eMBB (evolved Mobile BroadBand);
  • Non-eMBB evolution;
  • Cross-functionalities for both eMBB and non-eMBB driven evolution.

All the documents related to the workshop can be found on the 3GPP website here. The workshop details is available in RWS-210002 while the summary of the RAN Rel-18 workshop is available in RWS-210659.

The following is from 3GPP's news article on 5G-Advanced workshop:

Wanshi Chen, the TSG RAN Chair, summarized that the example areas under each topic serve as a starting point, each subject to further update or removal during the email discussion period - with additional topics still possible, up to the September e-meeting. That RAN#93-e meeting (13-17 September 2021) will see progress on ‘high-level descriptions’ of the objectives for each topic.

List of Topics:

1. Evolution for downlink MIMO, with the following example areas:
  • Further enhancements for CSI (e.g., mobility, overhead, etc.)
  • Evolved handling of multi-TRP (Transmission Reception Points) and multi-beam
  • CPE(customer premises equipment)-specific considerations
2. Uplink enhancements, with the following example areas:
  • >4 Tx operation
  • Enhanced multi-panel/multi-TRP uplink operation
  • Frequency-selective precoding
  • Further coverage enhancements
3. Mobility enhancements, with the following example areas:
  • Layer 1/layer 2 based inter cell mobility
  • DAPS (Dual Active Protocol Stack)/CHO (Conditional HandOver) related improvements
  • FR2 (frequency range 2)-specific enhancements
4. Additional topological improvements (IAB and smart repeaters), with the following example areas:
  • Mobile IAB (Integrated Access Backhaul)/Vehicle mounted relay (VMR)
  • Smart repeater with side control information
5. Enhancements for XR (eXtended Reality), with the following example areas:
  • KPIs/QoS, application awareness operation, and aspects related to power consumption, coverage, capacity, and mobility (Note: only power consumption/coverage/mobility aspects specific to XR)
6. Sidelink enhancements (excluding positioning), with the following example areas:
  • SL enhancements (e.g., unlicensed, power saving enhancements, efficiency enhancements, etc.)
  • SL relay enhancements
  • Co-existence of LTE V2X & NR V2X
7. RedCap evolution (excluding positioning), with the following example areas:
  • New use cases and new UE bandwidths (5MHz?)
  • Power saving enhancements
8. NTN (Non-Terrestrial Networks) evolution
  • Including both NR & IoT (Internet of Things) aspects
9. Evolution for broadcast and multicast services
  • Including both LTE based 5G broadcast and NR MBS (Multicast Broadcast Services)
10. Expanded and improved Positioning, with the following example areas:
  • Sidelink positioning/ranging
  • Improved accuracy, integrity, and power efficiency
  • RedCap positioning
11. Evolution of duplex operation, with the following example areas:
  • Deployment scenarios, including duplex mode (TDD only?)
  • Interference management
12. AI (Artificial Intelligence)/ML (Machine Learning), with the following example areas:
  • Air interface (e.g., Use cases to focus, KPIs and Evaluation methodology, network and UE involvement, etc.)
  • NG-RAN
13. Network energy savings, with the following example areas:
  • KPIs and evaluation methodology, focus areas and potential solutions
14. Additional RAN1/2/3 candidate topics, Set 1:
  • UE power savings
  • Enhancing and extending the support beyond 52.6GHz
  • CA (Carrier Aggregation)/DC (Dual-Connectivity) enhancements (e.g., MR-MC (Multi-Radio/Multi-Connectivity), etc.)
  • Flexible spectrum integration
  • RIS (Reconfigurable Intelligent Surfaces)
  • Others (RAN1-led)
15. Additional RAN1/2/3 candidate topics, Set 2:
  • UAV (Unmanned Aerial Vehicle)
  • IIoT (Industrial Internet of Things)/URLLC (Ultra-Reliable Low-Latency Communication)
  • <5MHz in dedicated spectrum
  • Other IoT enhancements/types
  • HAPS (High Altitude Platform System)
  • Network coding
16. Additional RAN1/2/3 candidate topics, Set 3:
  • Inter-gNB coordination, with the following example areas:
  • Inter-gNB/gNB-DU multi-carrier operation
  • Inter-gNB/gNB-DU multi-TRP operation
  • Enhancement for resiliency of gNB-CU
  • Network slicing enhancements
  • MUSIM (Multiple Universal Subscriber Identity Modules)
  • UE aggregation
  • Security enhancements
  • SON (Self-Organizing Networks)/MDT (Minimization of Drive Test)
  • Others (RAN2/3-led)
17. Potential RAN4 enhancements 

The latest timeline for Release-17/18 is as shown in the diagram above. 

The official 3GPP Release-18 page is here. This link is better to navigate through features in different 3GPP releases.

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