Wireless Transceiver Beam Management Power State Coupling

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Solution Overview

Problem

Next-generation air interfaces face challenges in optimizing discontinuous reception (DRX) management and beam management separately, leading to potential conflicts that can result in power inefficiencies or reduced cell capacity due to non-optimal beam settings.

Innovation Solution

Implementing a method for jointly performing beam management and power management in wireless transmit/receive units (WTRUs), where power states are coupled with beam management states, allowing for coordinated transitions based on trigger conditions to optimize both power savings and beam quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If DRX management is optimized for power savings with longer sleep times, then power consumption is reduced, but beam quality may deteriorate leading to loss of beams or drop in cell capacity

Engineering Contradiction:

Improvepower consumptionVSAvoidbeam quality

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent implements dynamic coupling between power states and beam management states, allowing the system to adapt beam management intensity based on current power state. When transitioning between power states, the system dynamically adjusts beam management activities to maintain appropriate beam quality without excessive power consumption. This resolves the contradiction by making the system flexible rather than static in its approach to beam management.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of beam management state based on power state transitions. Each power state is associated with a specific beam management state, and when the power state changes, the beam management state parameters are adjusted accordingly. This allows the system to optimize the balance between power consumption and beam quality by changing operational parameters rather than maintaining fixed settings.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If beam management is optimized for link robustness and high throughput, then beam quality is improved, but overhead increases and sleep times are reduced leading to higher power consumption

Engineering Contradiction:

Improvebeam qualityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies partial action by implementing beam management at different levels of intensity depending on the power state. Instead of continuously performing full beam management operations, the system performs beam management partially or fully based on current operational requirements and power state, reducing unnecessary overhead and power consumption while maintaining adequate beam quality.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The patent implements periodic beam management activities that are synchronized with power state transitions and DRX cycles. Beam management operations are performed periodically rather than continuously, with the frequency and intensity of these periodic actions adjusted based on the current power state, thereby reducing overall power consumption while maintaining link robustness.

Inventive Principle:

Principle #19Periodic action

3Ease of manufacture

If DRX and beam management are optimized separately, then each function can be optimized independently, but conflicts arise between the two optimizations

Engineering Contradiction:

Improveindependent optimizationVSAvoidsystem coordination

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent merges DRX management and beam management by coupling power states with beam management states. Instead of treating them as separate independent functions, the system combines their control mechanisms so that transitions in power states automatically trigger appropriate beam management state transitions. This eliminates conflicts between separate optimizations while maintaining the ability to optimize each function's parameters.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent creates a universal state management framework where power states serve multiple functions - both power management and beam management control. Each power state is associated with a corresponding beam management state, making the power state system multi-functional in controlling both power consumption and beam quality, thereby avoiding conflicts between separate optimization efforts.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11871360B2Devices, systems and methods for power efficient beam management in wireless systems

Publication Date: 2024.01.09 INTERDIGITAL PATENT HOLDINGS INC

AI summary

A wireless transmit/receive unit (WTRU) is configured to receive a radio resource control (RRC) message. The RRC message may comprise information that indicates an association between each of a plurality of beams and power information. The WTRU is configured to receive a trigger message. The WTRU is configured to select a beam in response to the received trigger message. The WTRU is configured to send a control channel transmission using a power level. The power level may be based on the power information mapped to the selected beam.