Uplink Transmit Switch Band Configuration for Interference Reduction

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Solution Overview

Problem

Wireless communication networks face interference and congestion due to increasing demand for mobile broadband access, which degrades performance on both downlink and uplink transmissions.

Innovation Solution

Implementing a method for wireless communication systems that allows UE capability signaling to indicate multiple band pairs or groups for uplink (UL) transmit (Tx) switch operations, enabling dynamic configuration and switching between different bands to optimize transmission paths and reduce interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple band pairs are configured for UL Tx switch operations, then adaptability and communication efficiency are improved, but device complexity and configuration overhead increase

Engineering Contradiction:
Improveband switching adaptabilityVSAvoidconfiguration complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the band configuration into multiple independent band pair indicators, allowing the UE to report capability for multiple discrete band pairs (e.g., first band pair, second band pair) rather than treating all bands as a single configuration unit. This enables granular switching between specific band combinations while maintaining manageable complexity through modular capability reporting.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic band switching where the UE can transition between different band pairs based on real-time network conditions and configuration received from the base station. The capability indication structure allows flexible activation of different band pairs (first band pair, second band pair, etc.) without requiring complete reconfiguration, enabling adaptive response to changing communication requirements.

Inventive Principle:
Principle #15Dynamics

2Object-affected harmful factors

If dynamic band switching is implemented, then interference is reduced and transmission quality is improved, but switching time and potential transmission gaps increase

Engineering Contradiction:
Improveinterference reductionVSAvoidswitching time
Core Design Contradiction:
Object-affected harmful factorsVSLoss of time

Solution Approach 1:

The patent employs preliminary action by having the UE pre-indicate its capability to support multiple band pairs and their associated switching operations before actual communication begins. The base station receives this capability information in advance and can plan band assignments and switching schedules proactively, minimizing reactive delays and ensuring smooth transitions when band switching becomes necessary.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS20220322388A1Uplink (UL) transmit (TX) switch operations
Publication Date: 2022.10.06 QUALCOMM INC
  • US20220322388A1 patent drawing
  • US20220322388A1 patent drawing
  • US20220322388A1 patent drawing

AI summary

This disclosure provides systems, methods, and devices for wireless communication that support uplink (UL) transmit (Tx) switch operations. In a first aspect, a method of wireless communication includes transmitting a user equipment (UE) capability that indicates multiple bands including a first set of bands and a second set of bands, each of the first set of bands and the second set of bands available for a UL Tx switch configuration. The first set of bands may be a pair of bands or a group of one or more bands. The method also includes receiving the UL Tx switch configuration for the first set of bands or the second set of bands, and transmitting an uplink message via the first set of bands or the second set of bands indicated by the UL Tx switch configuration. Other aspects and features are also claimed and described.