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3gpp TSG RAN78 ...summary from RAN chairman
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Ran78 summary
1.
© 3GPP 2012 ©
3GPP 2017 1 Summary from RAN#78 Source: RAN Chairman
2.
© 3GPP 2012 ©
3GPP 2017 2 Outline 5G NR aspects Handling of new WI/SI proposals LTE aspects Call for a 5G workshop
3.
© 3GPP 2012 ©
3GPP 2017 3 5G NR aspects
4.
© 3GPP 2012 ©
3GPP 2017 4 Non-Standalone 5G NR standards completed !
5.
© 3GPP 2012 ©
3GPP 2017 5 Focus on essential functionality In Q1: RAN1 shall continue to focus on stabilizing basic and essential functionality for the scope of the December drop that was defined at RAN#77 in RP-172108, with two additions: • Scope for URLLC work for Rel-15 in H1 for the June drop endorsed in RP-172817 • For NR-NR CA: finalization of the work to enable up to 2 different numerologies within the same PUCCH group (PUCCH sent on the CC with smaller SCS) in RAN1 in Q1, and in RAN4 (Core) for Q2, for the December drop. • Note: Situation to be re-assessed at RAN#79 in March RAN2 shall focus on closing the open issues for Option-3, and on commencing specification work for the essential components of Option-2
6.
© 3GPP 2012 ©
3GPP 2017 6 Handling of Study Items in 2018 Measures to maximize meeting time available for Release-15 NR in H1/2018: Conclusion: Work on NR Study Items led by RAN1 or RAN2 shall be limited to only one of the WG meetings in Q1, and limited to max. 1 TU each • The revised TU allocation for SIs is endorsed in RP-172805, RP-172782 Conclusion-bis: Potential approval of any new proposed SI/WI shall be targeted to June/2018 at the earliest • This implies to all new RAN1, RAN2, RAN3, RAN4 proposals for both LTE and NR • Continuation of an existing NR SI to another SI might be possible even before June/2018 • Continuation of an existing LTE SI to a WI/SI might be possible even before June/2018 • New LTE WI proposals targeting Release 15 are to be discussed and decided case-by-case
7.
© 3GPP 2012 ©
3GPP 2017 7 Architecture options It is recognized that all architecture options remain within the scope of the NR WID (completion target: June/2018) Conclusion: • Until March/2018 WGs shall prioritize Option-3 stabilization (only essential corrections allowed), and on Option-2 specification work • NR-NR DC is within the scope of the work, but needs basic Option-2 functionalities to stabilize first NR-NR DC to commence in Q2 • For Option-4, Option-7x: commence work once Option-2 and Option-3 are stabilized • Check the progress in March, and adjust plans/measures if necessary
8.
© 3GPP 2012 ©
3GPP 2017 8 RAN Architecture Control plane – User plane (CP –UP) split • Following the conclusion of the SI, RAN approved a new WID to commence with normative work for Release 15 CU-DU Lower Layer split • TR approved, but no consensus on how and whether to continue the work • It was concluded to put the work on hold in RAN3 in Q1, and re-check the situation at RAN#79 (March/2018)
9.
© 3GPP 2012 ©
3GPP 2017 9 Resolution on contentious items NR UE feature categorization, endorsed guidance in RP-172816 Mandatory 4Rx, conclusions in RP-172788 Mandatory channel bandwidth aspects, conclusions in RP-172832 UE power sharing aspects, conclusions in RP-172833 NR UE categories, RAN email discussion will be conducted as described in RP-172757
10.
© 3GPP 2012 ©
3GPP 2017 10 Administrative measures Ad-hoc meetings in July 2018 – Conclusion: • RAN1 AH in July is cancelled • RAN2 and RAN3 July AH confirmed • RAN4 July AH confirmed, but scope restricted to LTE/NR performance work only • Freeze 2018 meeting calendar as per the above, no new ad-hoc meetings! Ad-hoc meetings in 2019 – Conclusion: • Plan for 6 WG meetings for 2019, plan work accordingly (SI/WI approvals, etc…) • Remove RAN2, RAN3, RAN4 January and July ad-hocs from 3GPP calendar • Decide RAN1 January and July AH in June/2018, mark these as TBC for now Number of parallel sessions to be reduced in RAN1 from Q3/2018 onwards • Reduction in overall TU numbers (2621 for NR, 1714 for LTE) WGs are reminded about the PCG guidance on working hours
11.
© 3GPP 2012 ©
3GPP 2017 11 IMT2020 submission Calibration for self-evaluation • Good progress, but more time is needed to complete the work Email discussion to continue until Feb/2018 Initial description template • Initial Description Template for ITU-R submission is complete, LTI containing the template was sent to ITU-R following TSG-SA approval
12.
© 3GPP 2012 ©
3GPP 2017 12 Study on 6 GHz for LTE and NR New Study Item was approved to investigate the existing regulatory framework in different regions for the 5.925-7.125 GHz band • The study covers the regulation for both the unlicensed and licensed use for this band The Study will be conducted in RAN plenary, mostly on the email reflector Planned completion date of the study: RAN#80 (June/2018)
13.
© 3GPP 2012 ©
3GPP 2017 13 Handling of new WI/SI proposals
14.
© 3GPP 2012 ©
3GPP 2017 14 General Principles Primary focus to be put on ensuring proper Objectives&Scope that correspond to true market needs Real Time Unit estimates to be included that are ‘signed off’ by the lead WG Chairman Proposed new WI/SI shall omit Rapporteur information, the Supporting Companies information, and the Lead WG information • Lead WG information and Supporting Companies to be filled in upon full stabilization of the Objectives&Scope • Rapporteur information to be filled in upon approval of WI/SI Role of and expectation towards the eventual Rapporteur • To serve as a neutral facilitator of the work • Not represent any company proposal or position for the WI/SI • Organize end ensure necessary cross-WG correspondence • Accurate and honest status reporting (open issues, TUs, etc…) • Strictly restrict the number of Rapporteurs for a WI/SI to a single person Rapporteurship does not in any way represent a company’s leadership or the amount of innovation of a company for a certain WI/SI! All non-spectrum and non-testing WI/SI proposals to comply with General Principles from RAN#78 onwards
15.
© 3GPP 2012 ©
3GPP 2017 15 Next Steps for Rel16 proposals Work areas with multiple proposals at RAN#78 to be consolidated led by a Moderator over the RAN_Drafts exploder: • MIMO (NR & LTE), moderator: Samsung • NR Voice (including fallback), moderator: Huawei • IoT / eMTC evolution (LTE & NR), moderator: Ericsson • Broadcast (NR & LTE), moderator: Qualcomm • NR V2X, moderator: Vodafone • NR Positioning, moderator: Intel • NR flexible duplex, moderator: LG • NR Power Consumption, moderator: CATT (for the standalone aspects start after March) • NR URLLC Enhancements, moderator: Nokia (to be started after March) • NR Mobility, moderator: Intel (to be started after March) • Other miscellaneous NR enhancements/leftovers, moderator: Docomo • Note: individual SI/WI is needed for each individual item, i.e. no umbrella WI/SI! Other individual company proposals are also encouraged to be further developed on the RAN_Drafts exploder
16.
© 3GPP 2012 ©
3GPP 2017 16 Practical Steps until June/2018 Both the individual as well as the consolidated WI/SI proposals are encouraged to be further developed over the RAN_Drafts reflector Role of the Moderator for consolidating the new work areas: • To serve as a neutral facilitator for the consolidation of the new work area into SI(s) and WI(s) • Not represent any company proposal or position during consolidation Being a Moderator does not in any way represent a company’s leadership or the amount of innovation of a company for the work area Goals for moderation: • Determination of a core set of objectives carrying support of a wide majority • Capturing other objectives with scattered support in [] • Determining TUs for all potential objectives • Next checkpoint at RAN#79 (March/2018): moderator to submit summaries where applicable TSG-RAN to approve a set of new SIs/WIs at RAN#80 (June/2018) • This set will be a subset of all consolidated and individual proposals
17.
© 3GPP 2012 ©
3GPP 2017 17 LTE aspects
18.
© 3GPP 2012 ©
3GPP 2017 18 LTE ASN.1 freeze in March/2018 In accordance with earlier decisions, it is confirmed that For LTE: The March/2018 ASN.1 freeze contains functions essential for NR NSA Option-3 family only, and does not contain any other Rel-15 LTE feature
19.
© 3GPP 2012 ©
3GPP 2017 19 LTE aspects Number of Radio Bearers • RAN approved a new WID to increase the maximum number of Radio Bearers a UE can establish to 15, see RP-172835 • The WID is scheduled to be completed by June/2018, in time for Release-15 • RAN assumes the corresponding core architecture&protocol parts to also complete in Release 15 Low Latency for IMT2020 • RAN decided to task RAN2 to specify a solution within Release-15 to reduce control plane latency so that IMT2020 requirements can be met • It is also endorsed for RAN2 to address the 0ms latency requirement as per RP- 172807
20.
© 3GPP 2012 ©
3GPP 2017 20 LTE aspects LTE URLLC • Scope of the WID enhanced to enable the network to provide timing information at high granularity Light Connection • RAN decided to put the WID on LTE Light Connection on hold in accordance with SA decision • Topic to be re-addressed in June together with all other Release-16 proposals Support of Aerial Vehicles • New WID approved to optimize mobility and power control aspects to enable better support of aerial vehicles in LTE, see RP-172826
21.
© 3GPP 2012 ©
3GPP 2017 21 Call for a 5G workshop
22.
© 3GPP 2012 ©
3GPP 2017 22 Background 3GPP presented its plans for the submission of “5G” for inclusion in IMT-2020 during the ITU-R WP5D meeting in October 2017. At the end of the workshop a request was raised to organize a meeting between 3GPP and Evaluation Groups to provide an insight on the technology and ensure alignment of simulation scenarios. Possible dates are to be evaluated, but likely after the conclusion of Rel-15 Self Evaluation (September 2018).
23.
© 3GPP 2012 ©
3GPP 2017 23 Workshop Scope Organize a 3GPP Workshop on “5G” in 2018 • 1 ½ day workshop • From October 24th, 13:00 to October 25th, 17:00 • Tentative host: European Commission in Bruxelles (pending confirmation) Target audience: Independent Evaluation Groups , Regulators, Administrations, Verticals Scope: • Present to Independent Evaluation Groups 3GPP’s IMT2020 submission to WP5D in October • Provide insights to 3GPP’s “5G” technology Proposed agenda: (Details TBD in later stage) • Specific technical features of the “5G” proposal • Submission templates • Description characteristics template, link budget template, and compliance templates • Self-Evaluation results (including simulation assumptions and calibration) • Anticipations on the final submission with Rel 15 and Rel 16 contents • Overview of System Aspects
24.
© 3GPP 2012 ©
3GPP 2017 24 Thank You !
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