Page 10 - 3GPP_Highlights_Issue_5_WEB

TECHNICAL HIGHLIGHTS

A RELEASE 18

UPDATE

By Puneet Jain, 3GPP Working Group SA2 Chair

Technical Specification Group SA Working Group 2 (SA2) is in Rel-18 is the first release for 5G-Advanced. SA2 kicked off Rel-18
charge of developing the overall 3GPP system architecture Stage-2 work in Feb 2022, immediately following the Rel-18
and services including User Equipment, Access Network, content definition and prioritization at SA#94-e meeting in
Core Network, and IP Multimedia Subsystem. The group has a December 2021. Some Rel-18 study items are based on new
system-wide view and defines the main entities of the system requirements, while other study items are a result of unfulfilled
architecture, and how these entities are linked to each other, Rel-17 requirements that require further work.
it also defines the main functionality and the information
exchange between these entities.

Study items based on new Rel-18 requirements

• Study on 5G System with Satellite Backhaul (FS_5GSATB, TR 23.700- • Study on UPF enhancement for Exposure And SBA (FS_UPEAS, TR
27): The Rel-18 study aims at further enhancements for 5GS support for 23.700-62): The study item aims to support better integration of UPF into
satellites, with a specific focus on backhaul with changing delay, as well as the 5GC SBA by enhancing UPF event exposure service(s) including its
support for UPF deployed on GEO satellite with gNB on the ground. registration/deregistration, discovery, and consumption by other NFs.
• Study on Personal IoT Networks (FS_PINS, TR 23.700-88): study aims • Study on 5G Timing Resiliency and TSC & URLLC enhancements
to support Personal IoT Network (PIN) with requirements captured in (FS_5TRS_URLLC, TR 23.700-25): This study aims at various TSC and
3GPP TS 22.261 such as PIN Element discovery, PIN Element’s capability URLLC enhancements, with a specific focus on reporting time
discovery, PIN element availability and reachability, PIN management, synchronization status, interworking with TSN transport networks and
access of PIN via PIN Element with Gateway Capability (PEGC), and scheduler adaptation to support extremely low latencies.
communication of PIN Element with other PIN Elements.
• Study on Ranging based services and sidelink positioning (FS_ • Study on Architecture Enhancements for Vehicle Mounted Relays
Ranging_SL, TR 23.700-86): The study item aims to support Ranging- (FS_VMR, TR 23.700-05): This study aims to support the operation of base
based services and sidelink positioning for commercial, V2X and public station relays possibly mounted on vehicles, using NR for wireless access
safety use cases for in-coverage, partial coverage, and out-of-coverage of toward the UE and for wireless self-backhauling toward 5GC.
5G network with a focus on defining procedures for authorization and
policy/parameter provisioning, Ranging device discovery and service • Study on 5G AM Policy (FS_AMP, TR 23.700-89): The study aims to
operation, and Ranging and sidelink positioning service exposure. provide additional enhancement over existing mechanisms for AM
(Access and Mobility) policy control when UE moves from/to 5GC to/from
• Study on generic group management, exposure and communication EPC.
enhancements (FS_GMEC, TR 23.700-74): This study aims to study
enhancements for group attribute management and group status event • Study on enhancement of 5G UE Policy (FS_eUEPO, TR 23.700-85):
reporting, enhancements for 5G VN group communication, and support This study aims to support the URSP (UE Route Selection Policy) for
group communication allowing UE to simultaneously send data to home-routed and LBO roaming scenarios, 5GC awareness of URSP
different groups, where each group has a different QoS policy. enforcement, Provision consistent URSP to UE across 5GS and EPS,
Support standardized and operator-specific traffic categories in URSP.
• Study on System Support for AI/ML-based Services (FS_AIMLsys, TR
23.700-80): Rel-17 5GS supports AI/ML training and inference within the • Study on System Enabler for Service Function Chaining (FS_SFC, TR
5GC via NWDAF for network automation purposes and there are no 5GS 23.700-18): The study aims to support service function chaining in the
transport solutions to support device-based application AI/ML training 5G Core network (5GC) such as - enhancements to traffic steering policy
or inference services. This study aims to provide intelligent transmission and northbound APIs for allowing an AF to request network capability
support for application AI/ML-based services to support the use cases for exposure functionalities.
application layer AI/ML operation.
• Study on Extensions to the TSC Framework to support DetNet (FS_
• Study on XR (Extended Reality) and media services (FS_XRM, TR DetNet, TR 23.700-46): Deterministic Networking (DetNet) is standardized
23.700-60): The study item aims at 5GS enhancements to support XR by IETF and provides time-sensitive features that guarantee almost zero
and media services, with a specific focus on QoS/Policy enhancements, packet loss rates and bounded latency. This study aims to enable 3GPP
exposure enhancements for XR, and support for multi-modality services. support for DetNet such that mapping is provided between the central
DetNet controller entity (as defined in IETF) and the 5G system.
• Study on system architecture for Next Generation Real-Time
Communication services (FS_NG_RTC, TR 23.700-87): study the system • Study on Seamless UE context recovery (FS_SUECR, TR23.700-61): This
architecture for the next generation real-time communication services study aims to update NAS procedures to negotiate the feature support
based on IMS enhancement requirements from stage 1. and to indicate the unavailability period to 5GC and 5GC actions.
|
10 3GP P Highlights n e w slet t er