Beam Reporting Across Neighbor Nodes for Multi-TRP Mobility

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Solution Overview

Problem

Existing beam reporting methods in group-based scenarios fail to efficiently associate beam reports with multiple TRPs or cells, leading to interference and inability to quickly obtain Timing Advance (TA) information, especially in mobility and multi-TRP scenarios.

Innovation Solution

Implement a beam reporting method that enables association of beam reports with neighbor network nodes, allowing reports to be linked with multiple TRPs or cells, and includes mechanisms for reporting TA information, with options for enabling or disabling group reporting based on default settings or additional signaling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If group-based beam reporting is enabled to report beam quality of multiple RSs simultaneously, then the reporting capability is improved, but beam interference occurs and efficiency decreases

Engineering Contradiction:

Improvebeam reporting capabilityVSAvoidreporting efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent segments beam reporting into two distinct types: group-based beam reporting for multiple RSs and non-group-based beam reporting for single RS. This segmentation allows the system to select the appropriate reporting mode based on whether simultaneous multi-TRP communication is needed, avoiding beam interference while maintaining versatile reporting capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces dynamic switching between group-based and non-group-based beam reporting modes through configuration parameters and signaling. The terminal can adaptively select the reporting mode based on channel conditions and network requirements, optimizing reporting efficiency while maintaining adaptability.

Inventive Principle:

Principle #15Dynamics

2Device complexity

If beam report is associated only with current cell RS to simplify the system, then device complexity is reduced, but mobility and multi-TRP scenarios cannot be supported

Engineering Contradiction:

Improvebeam report association complexityVSAvoidmulti-TRP and mobility support

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent extends beam report association to support multiple network nodes (current cell and neighbor cells/TRPs) while maintaining a unified reporting framework. The beam report can be associated with different types of network nodes depending on configuration, providing universal support for various scenarios including mobility and multi-TRP without requiring separate mechanisms.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces configuration parameters and signaling as intermediaries that enable flexible association between beam reports and multiple network nodes. These intermediaries carry information about which network nodes should be associated with beam reports, allowing the system to support complex scenarios while keeping the basic beam reporting mechanism simple.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Quantity of substance

If L1 beam report is used to reduce reporting overhead, then signaling overhead is reduced, but TA information cannot be carried

Engineering Contradiction:

Improvesignaling overheadVSAvoidTA information transmission

Core Design Contradiction:

Quantity of substanceVSLoss of information

Solution Approach 1:

The patent merges L1 beam reporting with TA information transmission by allowing L1 beam reports to carry TA values when associated with neighbor network nodes. This combination enables efficient transmission of both beam quality information and timing advance information in a single reporting mechanism, reducing overall signaling overhead while preventing information loss.

Inventive Principle:

Principle #5Merging (Combining)

4Loss of information

If L3 beam report is used to carry TA information, then information completeness is improved, but reporting overhead increases and speed decreases

Engineering Contradiction:

ImproveTA information completenessVSAvoidreporting speed

Core Design Contradiction:

Loss of informationVSLoss of time

Solution Approach 1:

The patent applies partial action by allowing L1 beam reports (which are faster and have lower overhead) to carry TA information only when needed (i.e., when associated with neighbor network nodes in multi-TRP or mobility scenarios). In standard single-cell scenarios, traditional L1 reporting without TA information is used, optimizing for speed and efficiency while providing enhanced capability when required.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12501299B2Beam reporting method, network node, and terminal

Publication Date: 2025.12.16 VIVO MOBILE COMM CO LTD

AI summary

A beam reporting method, a network node, and a terminal are provided. The beam reporting method is applied to a network node and includes: sending a channel state information report configuration to a terminal; and receiving a beam report reported by the terminal according to the channel state information report configuration, where group reporting in the channel state information report configuration is set to enable, a function of associating the beam report with a neighbor network node is activated, and the beam report is associated with a neighbor network node.