6 Support of LAN-type services

21.9163GPPRelease 16Release descriptionTS

6.1 NR-based access to unlicensed spectrum

See section 19.1.1

6.2 LAN support in 5G

800006

LAN support in 5G

5GLAN

S1

SP-180593

Jose Almodovar, KPN

760007

Study on LAN Support in 5G

FS_5GLAN

S1

SP-170456

Nasielski, Jack, Qualcomm

800047

Stage 1 of 5GLAN

5GLAN

S1

SP-180593

Jose Almodovar, KPN

Summary based on the input provided by KPN in SP-200XYZ.

5G expands the scope and reach of 3GPP-defined technologies. There are multiple market segments in the realm of residential, office, enterprise and factory, where 5G will need to provide services with similar functionalities to Local Area Networks (LANs) but improved with 5G capabilities (e.g., high performance, long distance access, mobility and security).

The main goal of this work is to enable the 5G system to offer 5G LAN-type services and virtual networks:

5G LAN-type service: a service over the 5G system offering private communication using IP and/or non-, i.e. UEs that are members of the same 5G LAN-VN IP type communications.

5G LAN-virtual network: a virtual network capable of supporting 5G LAN-type service.

The requirements needed for the 5G system to support 5G LAN-type services are document in chapter 6.26 in TS 22.261[1], where the following aspects are addressed:

• General service requirements to enable 5G LAN-type services (connections, support for IP and Ethernet, service continuity, discovery, …)

• 5G LAN-virtual network

• Creation and management

• Security, isolation and privacy

• Traffic types

• Indirect communication for 5G LAN-type service

• Service exposure for 5G LAN-type service

The corresponding Stage 2 is covered by the Vertical_LAN, described in the next section (Vertical_LAN includes requirements specified in 5GLAN and other requirements from cyberCAV, such as IEEE TSN).

References

List of related CRs: select "TSG Status = Approved" in:
https://portal.3gpp.org/ChangeRequests.aspx?q=1&workitem=800006,760007,800047

[1] TS 22.261, Service requirements for the 5G system; Stage 1

6.3 5GS Enhanced support of Vertical and LAN Services

750004

Study on Communication for Automation in Vertical Domains

FS_CAV

S1

SP-170169

Walewski, Joachim, Siemens AG

800007

Service requirements for cyber-physical control applications in vertical domains

cyberCAV

S1

SP-180321

Joachim W. Walewski (Siemens)

830042

5GS Enhanced support of Vertical and LAN Services

Vertical_LAN

S2

SP-181120

Devaki Chandramouli, Nokia

800028

Study on 5GS Enhanced support of Vertical and LAN Services

FS_Vertical_LAN

S2

SP-180507

Devaki Chandramouli, Nokia

820017

Stage 2 of Vertical_LAN

Vertical_LAN

S2

SP-181120

Devaki Chandramouli, Nokia

810038

Study on Security for 5GS Enhanced support of Vertical and LAN Services

FS_Vertical_LAN_SEC

S3

SP-180697

Jerichow, Anja (Nokia)

840027

Security for Vertical_LAN

Vertical_LAN_SEC

S3

SP-190352

Jerichow, Anja, Nokia

830010

CT aspects of Vertical_LAN

Vertical_LAN

ct

CP-191157

WON, Sung Hwan, Nokia

830035

CT1 aspects of Vertical_LAN

Vertical_LAN

C1

CP-191157

WON, Sung Hwan, Nokia

830036

CT3 aspects of Vertical_LAN

Vertical_LAN

C3

CP-191157

WON, Sung Hwan, Nokia

830037

CT4 aspects of Vertical_LAN

Vertical_LAN

C4

CP-191157

WON, Sung Hwan, Nokia

820027

Service Enabler Architecture Layer for Verticals

SEAL

S6

SP-181141

Basavaraj (Basu) Pattan, Samsung

Summary based on the input provided by Nokia, Nokia Shanghai Bell in SP-200296.

The Vertical_LAN work item introduces support for three new and distinct features:

1) Enablers for 5G System deployment in 5G LAN type environment.

2) Time-sensitive communication with enablers for 5GS to seamlessly integrate with IEEE TSN, and for 5GS to enable support of time synchronization.

3) Enablers for Standalone Non-Public Network and Public-Network-integrated Non-Public Network.

5G_LAN

The 5G System supports management of 5G VN Group identification and membership as well as 5G VN Group data. The 5G VN Group management can be configured by a network administrator or it can be managed dynamically by an AF. In order to support dynamic management of 5G VN Group identification and membership, the NEF exposes a set of services to manage (e.g. add/delete/modify) 5G VN group and 5G VN members. The NEF also exposes services to dynamically manage 5G VN group data. Furthermore, 5GS supports optimized routing by enabling support for local switching at the UPF without having to traverse the DN for UE-UE communication when the two UE(s) are served by the same UPF.

Integration with IEEE TSN

TSC is a communication service that supports deterministic and/or isochronous communication with high reliability and availability. It provides packet transport with Quality of Service (QoS) characteristics such as bounded latency and reliability, where end systems and relay/transmit nodes can be strictly synchronized. In Release 16, main focus was on integration with IEEE Time-Sensitive Networking (TSN).

The 5G System also enables support for TSN time synchronization. In order to support time synchronization, the entire E2E 5G system can be considered as an IEEE 802.1AS [104] "time-aware system". UE, gNB, UPF, NW-TT and DS- TTs are synchronized with the 5G GM (i.e. the 5G internal system clock), which keeps these network elements synchronized. The TTs located at the edge of 5G system provides all functions related to IEEE 802.1AS.

Furthermore, this feature has also introduced TSC assistance parameters were introduced to facilitate optimized QoS scheduling for time sensitive and deterministic traffic.

Non-Public Network

This work item also addressed the deployment of Non-Public Networks (NPNs). A Non-Public Network (NPN) is a 5GS deployed for non-public use, as defined in TS 22.261 [2]. An NPN may be deployed as:

– a Stand-alone Non-Public Network (SNPN), i.e. operated by an NPN operator and not relying on network functions provided by a PLMN, or

– a Public network integrated NPN, i.e. a non-public network deployed with the support of a PLMN.

SNPN 5GS deployments are based on the architecture depicted in clause 4.2.3, the architecture for 5GC with untrusted non-3GPP access (Figure 4.2.8.2.1-1) for access to SNPN services via a PLMN (and vice versa) and the additional functionality covered in clause 5.30.2.

References

List of related CRs: select "TSG Status = Approved" in:
https://portal.3gpp.org/ChangeRequests.aspx?q=1&workitem=750004,800007,830042,800028,820017,810038,840027,830010,830035,830036,830037,820027

[1] TS 23.501, System Architecture for 5G System; Stage 2

[2] TS 23.502, Procedures for 5G System; Stage 2.

[3] TS 23.503, Policy and Charging Control Framework for the 5G System; Stage 2 Service Enabler Architecture Layer for Verticals