LTM Measurement Enhancements: Progress & Insights Leading into RAN1#119

November 14th, 2024 ‧ 20 min read

Enhancing Mobility Standards

The 3GPP is advancing cellular standards in Release 19 through the NR Mobility Enhancements Phase 4 (NR_Mob_Ph4) work item. This initiative aims to address limitations from Rel-18 by expanding LTM capabilities, supporting inter-CU operations, and improving L1 measurement handling. These enhancements promise smoother mobility and better measurement efficiency in NR systems.

Tracking the Developments: Agenda Item 9.9.1

Agenda item 9.9.1, Measurements Related Enhancements for LTM, has seen significant contributions at RAN1#118 and RAN1#118-bis, paving the way for the upcoming RAN1#119 meeting.

Key Contributions
  • Contributors: Over 25 sources submitted 25 TDocs with 270 proposals at each meeting.
Trends of contributors and contributions
  • Technical Issues: Discussions spanned across 7 primary categories and 25 sub-categories.
Technical issues, which are organized in 2-tiers topic hierarchy
Agreements Reached

At the RAN1#118b meeting in Oct. 2024, RAN1 delegates reached several agreements, including:

What’s Coming at RAN1#119?

28 sources contributed 274 proposals for agenda item 9.9.1. The upcoming meeting promises vigorous discussions, negotiations, and progress!

Overview of proposals in agenda item 9.9.1 of RAN1#119
Spotlight on Contributors
  • CATT leads with 23 proposals.
  • Nokia, Samsung, Huawei/HiSilicon each contributed 15+.
  • The rest averaged 8.5 proposals each.
The sources whom contributed the top 4 number of proposals

These numbers reflect the influence of significant contributors and their role in shaping standards.

Where’s the Focus?
  • Well-represented Areas: CSI-RS based reporting (51 proposals), Release 19 enhancements (40), Beam management and CSI acquisition (67). These topics are getting a lot of attention, which makes sense—they’re about improving reporting accuracy, preparing for the future, and making networks more efficient.
Well-represented top 4 technical topics in agenda item 9.9.1 of RAN1#119
  • Underrepresented Topics: When we flip the perspective, we see that event evaluation criteria, UE beam management, and CSI-RS configuration have very few or no proposals. Addressing these gaps is crucial for balanced and effective standards.

By putting effort into the well-covered and overlooked areas, delegates can ensure a standardization process that’s comprehensive and resilient, paving the way for smooth network evolution and an outstanding user experience.

Diversification vs. Specialization

  • Apple‘s 12 proposals span diverse areas like gNB scheduled reporting and Conditional LTM.
Bird-eye view of Apple’s proposals in R1-2409820
  • Samsung has 16 proposals focusing Other necessary enhancements, Conditional LTM and gNB scheduled reporting.
Bird-eye view of Samsung’s proposals in R1-2409612

This mix of specialization and diversity reflects different approaches to the standardization process.

Dissenting Voices: Who Says “No”?

MediaTek’s 5 proposals, including 4 outlining positions against specific solutions, add perspectives to the dialogue.

Bird-eye view of MediaTek’s proposals in R1-2410244

The Workload Challenge

RAN1 delegates face the daunting task of analyzing 274 proposals before the meeting. Each proposal needs careful consideration to set future-proof standards. This workload demands efficient solutions.

Introducing Proposal Zone

Proposal Zone, part of the Standard Impact Extractor (SIE), – is an intuitive tool designed to simplify proposal analysis and enhance decision-making efficiency. Proposal Zone helps delegates:

  • Access relevant proposals by agenda item.
  • Analyze summaries, trends, and sentiment.
  • Evaluate allies and competitors more effectively.
Screenshot of Proposal Zone with filter for agenda item 9.9.1 of RAN1#119

Proposal Zone can significantly reduce the manual effort required for evaluation, allowing you to focus on strategic discussions. Visit https://ixi.wispro.com to learn more.

 

The original article is from https://www.linkedin.com/pulse/ltm-measurement-enhancements-progress-insights-leading-lin--8t1oc/?trackingId=Wr2R4Q4egKkg4Rs8zYx7nA%3D%3D.
林 家聖

董事長暨執行長

林家聖現職擔任世博科技顧問執行長、杉盛資產管理顧問股份有限公司智財顧問,同時兼任國立成功大學智慧財產審議委員會業界委員 (2020迄今)。

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