Default Common Beam for Wireless Communication Alignment

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Solution Overview

Problem

In wireless communication systems, beam alignment issues between base stations and user equipment can lead to misaligned beam pairs, especially during periods of limited traffic, making common beam refinement infeasible and resulting in unsuitable indicated common beams for communication.

Innovation Solution

Implementing a default common beam, which is a wide and omnidirectional beam, to be used instead of an indicated common beam when it becomes unsuitable, and switching to this default beam upon expiration of an inactivity timer or when there is no traffic activity, ensuring continuous communication and alignment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If beam refinement is performed using indicated common beams, then communication precision is improved, but reliability deteriorates during periods of limited traffic or user equipment movement

Engineering Contradiction:

Improvebeam alignment precisionVSAvoidcommunication reliability

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The system pre-configures a set of default common beams that can be immediately activated when traffic activity ceases or user equipment movement is detected. This preliminary preparation ensures that reliable communication is maintained without requiring real-time beam refinement during critical periods.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system dynamically changes beam parameters by switching between indicated common beams (for precision during active traffic) and default common beams (for reliability during inactivity or movement). This parameter change allows the system to adapt to varying traffic conditions and maintain optimal performance.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If narrow indicated common beams are used for communication, then spectral efficiency is improved, but adaptability deteriorates when user equipment moves or traffic fluctuates

Engineering Contradiction:

Improvespectral efficiencyVSAvoidbeam adaptability

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The system implements dynamic beam selection by maintaining multiple default common beams with different characteristics and switching between them based on real-time conditions. This dynamic approach allows the system to optimize for spectral efficiency during stable periods while adapting to movement or traffic changes without requiring complex real-time refinement.

Inventive Principle:

Principle #15Dynamics

3Measurement precision

If complex beam refinement procedures are implemented, then beam alignment accuracy is improved, but device complexity increases

Engineering Contradiction:

Improvebeam alignment accuracyVSAvoidbeam management complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The base station pre-configures and stores multiple default common beams with optimized characteristics for different scenarios. This preliminary action eliminates the need for complex real-time beam refinement procedures, reducing device complexity while maintaining alignment accuracy through simple beam selection based on pre-established configurations.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20240073880A1Communication using a default common beam

Publication Date: 2024.02.29 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, information relating to one or more transmissions to be transmitted or received by the UE. The UE may communicate with the base station using a default common beam for the one or more transmissions. Numerous other aspects are described.