Multi-Beam UE PDCCH Skipping for Lower Connected-Mode Power

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Solution Overview

Problem

Existing UE power consumption in the RRC-CONNECTED state is excessive due to unnecessary PDCCH monitoring, particularly in multi-beam networks, which current DRX frameworks fail to address effectively.

Innovation Solution

Implementing power savings indications (PSI) to control PDCCH monitoring by grouping CORESETs into CORESET-Groups (COGs) and using pre-OnDuration-Window (POW) to signal UE power-saving behaviors, allowing PDCCH skipping and optimizing K0 and K2 parameters for reduced processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a UE monitors multiple SSBs for beam failure detection and new beam identification, then link reliability is improved, but power consumption increases

Engineering Contradiction:

Improvelink reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The UE monitors only a subset of SSBs rather than all SSBs. Specifically, the UE determines a first subset of SSBs associated with a first set of beams for beam failure detection, and determines a second subset of SSBs associated with a second set of beams for new beam identification. This partial monitoring approach reduces power consumption while maintaining sufficient link reliability.

Inventive Principle:

Principle #16Partial or excessive action

2Measurement precision

If a UE monitors multiple SSBs for beam failure detection and new beam identification, then beam failure detection accuracy is improved, but device complexity increases

Engineering Contradiction:

Improvebeam failure detection accuracyVSAvoiddevice complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The monitoring task is segmented into two distinct subsets: a first subset of SSBs for beam failure detection and a second subset of SSBs for new beam identification. These subsets can be determined based on different criteria (e.g., different QCL assumptions, different time/frequency resources). This segmentation maintains detection accuracy by covering necessary SSBs while reducing complexity by organizing monitoring into structured groups.

Inventive Principle:

Principle #1Segmentation

3Adaptability or versatility

If the network configures the UE to monitor all SSBs, then comprehensive beam coverage is achieved, but signaling overhead increases

Engineering Contradiction:

Improvebeam coverageVSAvoidsignaling overhead

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

Different SSB subsets are configured with different qualities or characteristics for different purposes. The first subset of SSBs is optimized for beam failure detection while the second subset is optimized for new beam identification. The network can configure these subsets with appropriate QCL assumptions, time/frequency resources, and other parameters tailored to their specific functions, achieving comprehensive coverage without uniform signaling overhead.

Inventive Principle:

Principle #3Local quality

Data Source

PatentEP4038983B1UE power savings in multi-beam operation

Publication Date: 2026.04.29 INTERDIGITAL PATENT HOLDINGS INC

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AI summary

Methods, systems, and devices may enable UE power savings in multi-beam connectivity using multi-TRPs or multi-UE panels. Methods, systems, and devices may enable PDCCH skipping in the active duration of the UE by skipping PDCCH monitoring associated with groups of CORESETs.