Bandwidth Part Switching Bit Pattern Interpretation

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Solution Overview

Problem

In 5G radio access networks, managing user equipment (UE) switching between bandwidth parts poses challenges in consistent and reliable handling of control signaling, particularly due to differences in bit field interpretations and resource mapping, leading to potential misinterpretation and unsuccessful decoding.

Innovation Solution

A method and system for interpreting control information messages that represent bit patterns differently based on whether they indicate a switch between bandwidth parts, using subpatterns to indicate resource mapping types and configurations, ensuring accurate decoding and communication across varying bandwidth characteristics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If bandwidth part switching is implemented to improve flexibility and performance, then adaptability is improved, but reliability deteriorates due to potential misinterpretation of control signaling and bit fields

Engineering Contradiction:

Improvebandwidth part switching capabilityVSAvoidcontrol signaling handling reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies local quality by making the interpretation of bit fields context-dependent on the current bandwidth part configuration. Different bit field interpretations are applied locally based on whether the UE is operating on a first or second bandwidth part, allowing the system to maintain reliability within each local context while enabling flexibility across different bandwidth configurations.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent implements dynamics by making the control information message interpretation dynamic based on the current operational bandwidth part. The bit pattern interpretation changes dynamically depending on whether the UE is operating on the first or second bandwidth part, enabling the system to adapt to different operational states while maintaining reliable communication.

Inventive Principle:

Principle #15Dynamics

2Manufacturing precision

If different bit field interpretations are used for different bandwidth parts to maintain accuracy, then manufacturing precision is improved, but device complexity increases due to multiple interpretation rules

Engineering Contradiction:

Improvebit field interpretation accuracyVSAvoidcontrol message processing complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by pre-configuring the UE with knowledge of multiple bit field interpretations corresponding to different bandwidth parts. The UE is prepared in advance with the interpretation rules for both the first and second bandwidth parts, allowing it to correctly interpret control information without real-time complexity while maintaining high accuracy.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250106837A1Resource mapping based on bandwidth part

Publication Date: 2025.03.27 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

There is disclosed a method of operating a user equipment in a radio access network, the method including communicating based on a control information message received while operating on a first bandwidth part; wherein the control information message represents a bit pattern; wherein the bit pattern is interpreted differently depending on whether the control information message indicates switch to operating on a second bandwidth part or not. The disclosure also pertains to related devices or methods.