Independent BWP Switching Across Communication Chains

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Solution Overview

Problem

Joint bandwidth part (BWP) switching in wireless communication systems often results in performance degradation due to sub-optimal air interface resource usage and increased data transfer latencies, as the network node selects BWP configurations that are not optimized for both downlink and uplink communications.

Innovation Solution

Implementing independent BWP switching, where a first communication chain is reconfigured without modifying a second communication chain, allowing for optimized BWP configurations tailored to individual communication directions, thereby reducing data transfer latencies and resource waste.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If joint BWP switching is implemented, then configuration simplicity is maintained, but data transfer latency increases and air interface resource usage becomes sub-optimal

Engineering Contradiction:

ImproveBWP configuration managementVSAvoiddata transfer latency

Core Design Contradiction:

Device complexityVSLoss of time

Solution Approach 1:

The patent segments the BWP configuration into independent communication chains (first and second communication chains). Each chain can be configured with different BWP parameters independently, allowing the network to optimize downlink and uplink BWPs separately rather than forcing joint switching of both chains simultaneously.

Inventive Principle:

Principle #1Segmentation

2Device complexity

If joint BWP switching is implemented, then configuration simplicity is maintained, but air interface resource efficiency deteriorates

Engineering Contradiction:

ImproveBWP configuration managementVSAvoidair interface resource waste

Core Design Contradiction:

Device complexityVSLoss of energy

Solution Approach 1:

The patent applies local quality by allowing different BWP configurations optimized for specific communication directions. The first communication chain can use a BWP optimized for downlink while the second chain uses a different BWP optimized for uplink, ensuring each chain operates with locally optimal parameters rather than a single sub-optimal joint configuration.

Inventive Principle:

Principle #3Local quality

3Productivity

If independent BWP configuration is implemented, then data throughput is enhanced, but configuration complexity increases

Engineering Contradiction:

Improvedata throughputVSAvoidBWP configuration management

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent introduces dynamic BWP configuration where the network can independently select and switch BWPs for different communication chains based on real-time channel conditions and traffic requirements. This dynamic adaptation enables throughput optimization while the network maintains control over the complexity through centralized management.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20260082373A1Configuring a first communication chain for a bandwidth part change without modifying a second communication chain

Publication Date: 2026.03.19 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit UE capability information that indicates support for independently modifying a bandwidth part (BWP) configuration of a first communication chain that is configured with a first BWP in a carrier without modifying a second communication chain that is configured with a second BWP in the carrier. The UE may receive, based at least in part on indicating support for independently modifying the BWP configuration of the first communication chain without modifying the second communication chain, an instruction to reconfigure the first communication chain with a third BWP in the carrier without modifying the second communication chain. Numerous other aspects are described.