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SA2 #178Preview

SA2 #178 preview: what the meeting will debate

16 November to 20 November 2026Calgary3GPP TSG SA WG2Last updated 2026-11-09

At a glance

  1. New study descriptions address satellite continuity and IMS voice, while 6G studies examine AI services, data handling and QoS.

  2. Proposals would extend continuity across terrestrial and satellite access and add binary signalling to NR NTN voice objectives.

  3. The data framework discussion covers UE participation, multiple NFs and collection for AI model training.

  4. QoS work examines intent input under CN authorization, alongside a substantial integrated sensing and communication study.

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  • New Study/Work Item DescriptionsFollowAsk Scout
  • Study on Architecture for 6G System (FS_6G_ARC) - 6G Network for AIFollowAsk Scout
  • Study on Architecture for 6G System (FS_6G_ARC) - 6G data framework in SA WG2FollowAsk Scout
  • Study on Architecture for 6G System (FS_6G_ARC) - QoS Framework for 6GFollowAsk Scout

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Hottest topics

30.2

New Study/Work Item Descriptions

Significance 43 of 100, 21 TDocs

CATT proposes service continuity between TN and NTN access and between two satellite access networks. Viasat (with Skylo Technologies, Terrestar, Thuraya) proposes considering simultaneous calls per satellite cell when evaluating IMS voice over NTN.

Sources: S2-2611481, CATT; S2-2612399, Viasat. 3GPP TSG SA WG2 #178. © CATT, Viasat.

2 proposals on this topic

The continuity proposal covers transitions between access networks, not just operation on one satellite link. The voice proposal would add binary-encoded signalling to NR NTN objectives alongside the IMS procedures already proposed for extension.

CATT

Proposal
Proposal 5: Enhance service continuity between TN-NTN and between 2 satellites access networks.

Source: S2-2611481, CATT. 3GPP TSG SA WG2 #178. © CATT.

Viasat (with Skylo Technologies, Terrestar, Thuraya)

Proposal
Proposal: SA2 is invited to: 1. take the number of simultaneous voice calls per satellite cell into account when evaluating S2-2612249, including in any LS ...

Source: S2-2612399, Viasat. 3GPP TSG SA WG2 #178. © Viasat.

20.6.19

Study on Architecture for 6G System (FS_6G_ARC) - 6G Network for AI

Significance 36 of 100, 62 TDocs

Huawei (with HiSilicon) proposes defining NFs for AI services used by applications in the AF or UE. A separate proposal would use data framework functionality to collect data for AI model training.

Sources: S2-2611624, Huawei; S2-2611627, Huawei. 3GPP TSG SA WG2 #178. © Huawei.

2 proposals on this topic

The proposals put both service functions and a training-data collection path into the architecture discussion. Defining the functions does not by itself specify how training data is collected.

Huawei (with HiSilicon)

Proposal
Proposal 1: the Network Functions to support AI service for applications (AF or in UE) should be defined in key issue 19.

Source: S2-2611624, Huawei. 3GPP TSG SA WG2 #178. © Huawei.

Huawei (with HiSilicon)

Proposal
Data collection for AI model training service is supported by invoking the functionality defined in Data framework.

Source: S2-2611627, Huawei. 3GPP TSG SA WG2 #178. © Huawei.

20.6.21

Study on Architecture for 6G System (FS_6G_ARC) - 6G data framework in SA WG2

Significance 33 of 100, 106 TDocs

vivo (with MediaTek, Futurewei) proposes treating the UE as both a data producer and consumer. Huawei (with HiSilicon) proposes a multiple-NF architecture for the 6G data framework.

Sources: S2-2611846, vivo; S2-2612012, Huawei. 3GPP TSG SA WG2 #178. © vivo, Huawei.

2 proposals on this topic

These proposals address different design dimensions: who exchanges data and how framework functions are organized. UE participation remains a separate question from the proposed organization of framework NFs.

vivo (with MediaTek, Futurewei)

Proposal
Considering the currently identified use cases and, more importantly, extensibility, it proposes to treat the UE as data consumer and data producer of the 6G ...

Source: S2-2611846, vivo. 3GPP TSG SA WG2 #178. © vivo.

Huawei (with HiSilicon)

Proposal
it is proposed to go with multiple NFs option (i.e. Q21.1.2) for data framework overall architecture design.

Source: S2-2612012, Huawei. 3GPP TSG SA WG2 #178. © Huawei.

20.6.5

Study on Architecture for 6G System (FS_6G_ARC) - QoS Framework for 6G

Significance 28 of 100, 89 TDocs

OPPO proposes considering RAN2 requirements for intent-related QoS input in KI#6 and KI#5. One question is whether UE or user intent can select or adapt treatment within a CN-authorized range.

Source: S2-2612487, OPPO. 3GPP TSG SA WG2 #178. © OPPO.

1 proposal on this topic

The proposal also asks what deterministic QoS information can be provided to RAN. It treats operator control and authorization as questions for intent-derived input, rather than treating intent as an unrestricted command.

OPPO

Proposal
SA2 should consider RAN2’s requirements on intent QoS input when progressing KI#6 and KI#5, in particular: whether UE/user intent can be used to select or ...

Source: S2-2612487, OPPO. 3GPP TSG SA WG2 #178. © OPPO.

20.6.20

Study on Architecture for 6G System (FS_6G_ARC) - Integrated Sensing and Communication

Significance 27 of 100, 86 TDocs

The integrated sensing and communication architecture study has 86 TDocs on its agenda.

What to watch

  • Watch whether the proposed satellite study covers both TN-NTN transitions and transitions between satellite access networks.

    Source: S2-2611481, CATT. 3GPP TSG SA WG2 #178. © CATT.

  • Check whether IMS voice evaluation accounts for simultaneous calls per satellite cell.

    Source: S2-2612399, Viasat. 3GPP TSG SA WG2 #178. © Viasat.

  • Watch whether AI service NFs for AF or UE applications are defined within KI#19.

    Source: S2-2611624, Huawei. 3GPP TSG SA WG2 #178. © Huawei.

  • Track whether AI training data collection uses functionality defined in the data framework.

    Source: S2-2611627, Huawei. 3GPP TSG SA WG2 #178. © Huawei.

  • Watch how proposed UE producer and consumer roles relate to the proposed multiple-NF framework.

    Sources: S2-2611846, vivo; S2-2612012, Huawei. 3GPP TSG SA WG2 #178. © vivo, Huawei.

  • Check how the QoS proposal handles CN authorization and deterministic information provided to RAN.

    Source: S2-2612487, OPPO. 3GPP TSG SA WG2 #178. © OPPO.

Busiest agenda items

Agenda itemTitleTDocs
20.6.18Study on Architecture for 6G System (FS_6G_ARC) - AI for 6G architecture126
20.6.21Study on Architecture for 6G System (FS_6G_ARC) - 6G data framework in SA WG2106
20.6.5Study on Architecture for 6G System (FS_6G_ARC) - QoS Framework for 6G89
20.6.20Study on Architecture for 6G System (FS_6G_ARC) - Integrated Sensing and Communication86
20.5.2Architecture support of Ambient power-enabled Internet of Things - Phase 2 (AmbientIoT_Ph2-ARC)62
20.6.19Study on Architecture for 6G System (FS_6G_ARC) - 6G Network for AI62
20.2.2Architecture Enhancement to support Integrated Sensing and Communication (Sensing_ARC)57
20.6.23Study on Architecture for 6G System (FS_6G_ARC) - Support of 6G NTN56
20.6.1Study on Architecture for 6G System (FS_6G_ARC) - support for control signalling for 6G System54
20.6.22Study on Architecture for 6G System (FS_6G_ARC) - 6G Computing Support40
20.6.6Study on Architecture for 6G System (FS_6G_ARC) - Policy and charging control framework38
20.6.17Study on Architecture for 6G System (FS_6G_ARC) - Migration and Interworking29

Built by 3GPP Scout from the public meeting record (1149 TDocs registered, catalog synced 2026-11-09). Significance scores rank topics by decisions, contention, breadth and volume. Excerpts are at most 25 words and link to the original on the 3GPP file server.