Page 4 - Highlight_Issue_2_FLIP_BOOK

TECHNICAL HIGHLIGHTS

A RELEASE 17 UPDATE

By Puneet Jain, 3GPP Working Group SA2 Chair.

Technical Specification Group SA Working Group 2 is in charge of developing the Stage-2 specifications of the
overall system architecture - including the main functions and entities of the 3GPP network, how these entities
are linked to each other and the information they exchange.

The group defined the 5G system Although SA2 kicked off work on Study on enhancement of support for
architecture as part of 3GPP Release-15 Release-17 study items in the fourth edge computing in 5GC
and has continued its progress with the quarter of 2019, the major part of (FS_enh_EC, TR 23.748)
Release-16 work - focusing on following the work has taken place after the To define solutions to enhance the
key focus areas: prioritization exercise for the release forwarding of some UE application traffic
at the TSG SA#89 plenary meeting in to the applications/contents deployed
• 5G System (5GS) enablers for December 2019. in Edge Computing Environment,
new verticals e.g. including the dynamic insertion of traffic
That prioritization exercise resulted in
• Industrial automation, including Time the following new Release-17 study items offloading capabilities, seamless change of
Sensitive Communication (TSC), and work items, approved as the focus of application server serving the UE, provide
Ultra Reliable and Low Latency further enhancements to the 5G system local applications with information
Communication (URLLC) and Non- and enablers for new features on e.g. the expected QoS of the data
Public Networks (NPNs) and services: path, supporting PSA change when the
application does not support notifications
• Cellular Internet of Things (CIoT) Study on enhanced support of of UE IP address change.
support for 5G system non-public networks
(FS_eNPN, TR 23.700-07) Study on Access traffic steering, switch
• Vehicle-to-Everything (V2X) and splitting support; Phase 2
communication To enable support for Standalone (FS_ATSSS_Ph2, TR 23.700-93)
Non-Public Network (SNPN) along
with subscription/credentials owned Aims to support additional traffic steering
• 5G Wireless Wireline by an entity separate from the SNPN, capabilities as well as supporting Multi
Convergence (5WWC) support for Video, Imaging and Audio access PDU Session using 3GPP LTE/EPC
for Professional Applications, Support resources as a 3GPP access.
• Other 5G system enhancements of IMS voice and emergency services for Study on enablers for network
e.g. enhancements for Network SNPN, and support for UE Onboarding and automation for 5G; Phase 2
Analytics (eNA), support for Access remote provisioning. (FS_eNA_Ph2, TR 23.700-91)
Traffic Steering, Switching and Splitting To address some leftover work from
(ATSSS), optimized UE radio capability Study on enhanced support of Industrial Rel-16, such as data collection from UE
signalling (RACS), enhanced Network Internet of Things for analytics generation; how to ensure
Slicing (eNS), enhanced Service Based (FS_IIoT, TR 23.700-20) that slice SLA is guaranteed. Also new
Architecture (eSBA), Single Radio Voice To enhance support of Time Sensitive functionality will be supported which
Call Continuity (5G-SRVCC), enhanced Communication (TSC), including includes - Multiple NWDAF Instances in
Location Services (eLCS). enhancements for support of deterministic one PLMN including hierarchies, enabling
applications and enhancements to IEEE real-time or near real-time NWDAF
Time-Sensitive Networking (TSN). Key communication, NWDAF-Assisted UP
“Although SA2 kicked off issues addressed in the study include Optimization, Interaction between
Uplink Time Synchronization, UE-UE TSC NWDAF and AI Model & Training Service
work on Release-17 study communication, Exposure of QoS and owned by the operator.
related enhancements,
items in the fourth quarter Study on enhancement of
Exposure of Time Synchronization services network slicing; Phase 2
of 2019, the major part of for activation/deactivation, support for (FS_eNS_Ph2, TR 23.700-40)
PTP time sync and use of Survival Time for
the work has taken place Deterministic Applications in 5GS. Identifying the gaps that need to be filled
in providing support in the specifications
after the prioritization owned by SA WG2 for the Generic
Network Slice Template (GST) attributes
exercise for the release… defined by GSMA 5GJA and captured in
document NG.116.
in December 2019.”

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