Page 5 - Highlight_Issue_3_final_web

TOPICS UNDER DISCUSSION • Additional RAN1/2/3 candidate topics, Set 1:
As well as taking a tentative decision on an 18-month duration o UE power savings

for Release 18, the RAN workshop endorsed a list of topics for o Enhancing and extending the support beyond 52.6GHz
subsequent email discussions. Some of the topics in the following o CA (Carrier Aggregation)/DC (Dual-Connectivity) enhancements
list also have a set of example areas, serving as a starting point for (e.g., MR-MC (Multi-Radio/Multi-Connectivity), etc.)
further refinement: o Flexible spectrum integration
o RIS (Reconfigurable Intelligent Surfaces)
• Evolution for downlink MIMO, with the following example areas: o Others (RAN1-led)
o Further enhancements for CSI (e.g., mobility, overhead, etc.)
o Evolved handling of multi-TRP (Transmission Reception Points) • Additional RAN1/2/3 candidate topics, Set 2:
and multi-beam o UAV (Unmanned Aerial Vehicle)
o CPE (customer premises equipment) -specific considerations o IIoT (Industrial Internet of Things)/URLLC (Ultra-Reliable
Low-Latency Communication)
• Uplink enhancements, with the following example areas: o <5MHz in dedicated spectrum
o >4 Tx operation o Other IoT enhancements/types
o Enhanced multi-panel/multi-TRP uplink operation o HAPS (High Altitude Platform System)
o Frequency-selective precoding o Network coding
o Further coverage enhancements
• Additional RAN1/2/3 candidate topics, Set 3:
• Mobility enhancements, with the following example areas: o Inter-gNB coordination, with the following example areas:
o Layer 1/layer 2 based inter cell mobility * Inter-gNB/gNB-DU multi-carrier operation
o DAPS (Dual Active Protocol Stack)/CHO (Conditional * Inter-gNB/gNB-DU multi-TRP operation
HandOver) related improvements * Enhancement for resiliency of gNB-CU
o FR2 (frequency range 2)-specific enhancements o Network slicing enhancements
• Additional topological improvements (IAB and smart repeaters), o MUSIM (Multiple Universal Subscriber Identity Modules)
with the following example areas: o UE aggregation
o Mobile IAB (Integrated Access Backhaul)/Vehicle mounted o Security enhancements
relay (VMR) o SON (Self-Organizing Networks)/MDT
o Smart repeater with side control information (Minimization of Drive Test)
o Others (RAN2/3-led)
• Enhancements for XR (eXtended Reality), with the following
example areas: • Potential RAN4 enhancements
o KPIs/QoS, application awareness operation, and aspects related
to power consumption, coverage, capacity, and mobility DECISIONS IN DECEMBER
* Note: only power consumption/coverage/mobility It is reasonable to assume that many of the topics listed above will
aspects specific to XR be part of Release 18. Additional steps, via emails and electronic
meetings, are now planned to ensure that the Release 18 package
• Sidelink enhancements (excluding positioning), with the following can be approved in December 2021. TSG RAN is primarily focusing
example areas: on projects led by RAN WG1, WG2 and WG3 in December 2021,
o SL enhancements (e.g., unlicensed, power saving followed by focusing on projects led by RAN WG4 in March 2022.
enhancements, efficiency enhancements, etc.)
o SL relay enhancements All of the above demonstrates that the process of reaching a
o Co-existence of LTE V2X & NR V2X consensus for RAN Release 18 projects is very involved, which is
• RedCap evolution (excluding positioning), with the following a reflection of the importance of the start of the work towards
example areas: 5G-Advanced. The release will have a focus on a balanced evolution,
o New use cases and new UE bandwidths (5MHz?) one that delivers clarity and openness as we see the further spread of
o Power saving enhancements the 3GPP system into new areas.
• NTN (Non-Terrestrial Networks) evolution More about TSG RAN here: www.3gpp.org/specifications-groups
o Including both NR & IoT (Internet of Things) aspects
Project Co-ordination Group (PCG)
• Evolution for broadcast and multicast services TM
o Including both LTE based 5G broadcast and NR MBS TSG RAN TSG CT TSG SA
(Multicast Broadcast Services) Radio Access Network Core Network & Terminals Service & System Aspects
• Expanded and improved Positioning, with the following example RAN WG1 CT WG1 SA WG1
Radio Layer 1
areas: (Physical layer) User Equipment - Services
Core Network
o Sidelink positioning/ranging protocols SA WG2
RAN WG2
o Improved accuracy, integrity, and power efficiency Radio Layer 2 & System Architecture
& Services
o RedCap positioning Radio Layer 3
Radio Resource Control CT WG3 SA WG3
• Evolution of duplex operation, with the following example areas: Interworking with External Security and Privacy
Networks & Policy
RAN WG3
SA WG4
o Deployment scenarios, including duplex mode (TDD only?) UTRAN/E-UTRAN/NG-RAN & Charging Control Multimedia Codecs,
o Interference management architecture and related Systems and Services
network interfaces
CT WG4
SA WG5
• AI (Artificial Intelligence)/ML (Machine Learning), with the RAN WG4 Core Network protocols Management,
following example areas: Radio Performance Orchestration and Charging
o Air interface (e.g., Use cases to focus, KPIs and Evaluation Protocol aspects SA WG6
methodology, network and UE involvement, etc.) RAN WG5 CT WG6 Application Enablement &
Mobile Terminal
Smart Card
o NG-RAN Conformance Testing Application Aspects Critical Communication
Applications
© 3GPP
• Network energy savings, with the following example areas:
|
o KPIs and evaluation methodology, focus areas and potential I ssue 03 - O ct ober 2021 05
solutions