Beam Sweeping Pattern Switching for Wireless Interference

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Solution Overview

Problem

Full-duplex communications in wireless networks often introduce interference, leading to decoding failures and increased latency due to self-interference and clutter echo, which degrades communication performance.

Innovation Solution

Implementing techniques for switching between different beam sweeping patterns for full-duplex and half-duplex communications, allowing for beam separation between overlapping transmission occasions and associating specific patterns with logical channels to reduce interference and enhance spatial diversity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If full-duplex communications are implemented, then spectral efficiency and data rates are improved, but interference and decoding failures increase

Engineering Contradiction:

Improvespectral efficiencyVSAvoiddecoding success rate

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent segments the beam sweeping process by configuring different beam sweeping patterns for different logical channels (e.g., first pattern for control channels, second pattern for data channels). This segmentation allows independent optimization of each channel's beam sweeping, reducing mutual interference while maintaining full-duplex spectral efficiency

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by associating specific beam sweeping patterns with specific logical channels based on their interference characteristics. Control channels receive patterns optimized for reliability, while data channels receive patterns optimized for throughput, achieving localized optimization that resolves the contradiction between spectral efficiency and decoding success

Inventive Principle:

Principle #3Local quality

2Reliability

If beam sweeping patterns are switched for different logical channels, then interference is reduced and communication performance is improved, but device complexity increases

Engineering Contradiction:

Improvecommunication performanceVSAvoidbeam pattern management

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent creates a universal beam sweeping framework where a single configuration mechanism handles multiple logical channels with different patterns. The network entity configures multiple patterns that can be universally applied across different channels and scenarios, reducing the need for separate management mechanisms and thereby limiting complexity increase

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If multiple beam sweeping patterns are configured for different logical channels, then spatial diversity is enhanced and interference is reduced, but signaling overhead increases

Engineering Contradiction:

Improvespatial diversityVSAvoidsignaling overhead

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent implements preliminary action by pre-configuring multiple beam sweeping patterns at the network entity before actual communication begins. These patterns are stored and ready for selection based on logical channel requirements, eliminating the need for real-time pattern negotiation and reducing signaling overhead during active communication

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11804944B2Beam sweeping pattern switching

Publication Date: 2023.10.31 QUALCOMM INC

AI summary

Techniques and apparatus for beam sweeping pattern switching. A method that may be performed by a user equipment (UE) includes receiving signaling configuring the UE with a first set of repetition and beam sweeping patterns for half-duplex communications and a second set of repetition and beam sweeping patterns for full-duplex communications; and participating in half-duplex communications and full-duplex communications using the first and second sets of repetition and beam sweeping patterns.