Beam-Specific Repetition Patterns for Multicast Beam Diversity

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Solution Overview

Problem

Existing multicast and broadcast service (MBS) technologies waste power and reduce spectral efficiency due to unnecessary repetitions on beams, leading to increased inter-beam interference.

Innovation Solution

Implementing beam-specific repetition patterns with flexible power allocation for multiple beams, determined based on channel state information (CSI) feedback, to optimize resource usage and reduce unnecessary repetitions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If beam-specific repetition patterns are implemented, then spectral efficiency is improved and inter-beam interference is reduced, but device complexity increases due to CSI feedback processing and beam management

Engineering Contradiction:

Improvespectral efficiencyVSAvoidbeam management complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent implements feedback mechanisms where terminal devices report channel state information (CSI) to network devices. This feedback enables network devices to determine optimal beam-specific repetition patterns based on actual channel conditions, thereby improving spectral efficiency while managing complexity through structured feedback loops rather than exhaustive beam testing

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent introduces dynamic beam selection and repetition pattern adaptation based on varying channel conditions. Instead of static beam configurations, the system dynamically adjusts beam-specific repetition patterns according to real-time CSI feedback, allowing the system to adapt to changing environmental conditions and optimize performance without requiring complex manual configuration

Inventive Principle:

Principle #15Dynamics

2Reliability

If unnecessary beam repetitions are performed, then service coverage is maintained, but power consumption increases and spectral efficiency deteriorates

Engineering Contradiction:

Improveservice coverageVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent applies local quality by configuring different repetition patterns for different beams based on their specific channel characteristics. Instead of applying a uniform repetition pattern across all beams, the system tailors the repetition pattern to each beam's local conditions, ensuring adequate coverage where needed while reducing unnecessary repetitions in beams with better channel conditions, thereby reducing overall power consumption

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent changes the repetition pattern parameter dynamically based on channel state information. By adjusting the repetition pattern parameter according to measured channel conditions, the system maintains reliable service coverage when channel conditions are poor while reducing repetitions (and thus power consumption) when channel conditions are good, achieving an optimal balance between coverage and energy efficiency

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12587244B2Beam diversity for multicast and broadcast systems

Publication Date: 2026.03.24 NOKIA TECHNOLOGIES OY

AI summary

Disclosed are example embodiments of methods, apparatuses and systems supporting beam diversity for multimedia broadcast multicast services. A method may comprise receiving information of one or more beams and abeam-specific repetition pattern for at least one of the one or more beams for transmission of a service from a network device, and receiving the service on the at least one of the one or more beams based on the beam-specific repetition pattern.