Beam-Based Bandwidth Part Switching With Reference Frequency Shifts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communications systems, the frequent switching of bandwidth parts (BWPs) due to beam changes at user equipment (UE) leads to high signaling volume and inefficient resource allocation, particularly in scenarios involving long distances and high mobility, causing substantial signal degradation and interference.
Innovation Solution
The UE identifies a beam associated with a set of BWPs, including a reference BWP, and receives a BWP configuration that involves changing the frequency for at least one BWP, allowing for efficient switching based on frequency shifts and timing thresholds, reducing signaling overhead and improving resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequent beam switching is performed to track high mobility UE, then communication reliability is improved, but signaling volume increases and resource allocation becomes inefficient
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple BWPs with different frequency parameters before beam switching occurs. The network entity prepares BWP configurations in advance, including frequency shifts and switch delays, so that when beam switching is needed, the UE can quickly switch to the pre-prepared BWP without requiring complex real-time reconfiguration signaling.
Solution Approach 2:
The patent utilizes parameter changes by modifying frequency parameters of BWPs to optimize communication during beam switching. The network entity configures BWPs with different frequency shifts relative to a reference BWP, allowing the UE to adjust to new frequency parameters quickly when switching beams, thereby reducing signaling overhead while maintaining communication reliability.
2Adaptability or versatility
If multiple BWP configurations are used for different beams, then adaptability to beam switching is improved, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent applies universality by creating a reference BWP that serves as a template for multiple other BWPs. Instead of configuring each beam's BWPs independently, the network entity uses the reference BWP configuration and applies frequency shifts to generate multiple BWPs that can be used across different beams, reducing the total number of configurations needed while maintaining adaptability.
Solution Approach 2:
The patent uses parameter changes by deriving multiple BWP configurations from a single reference BWP through frequency shifting. This allows the system to maintain adaptability to different beams while significantly reducing resource allocation requirements, as the same base configuration is reused with adjusted frequency parameters rather than creating entirely new configurations for each beam.
3Adaptability or versatility
If BWP reconfiguration is performed frequently during beam switching, then communication adaptability is improved, but signal degradation increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring BWPs with anticipated frequency parameters before beam switching occurs. The network entity prepares BWP configurations in advance including necessary frequency shifts and switch delays, allowing the UE to perform BWP switching without frequent reconfigurations during actual beam transitions, thereby reducing signal degradation while maintaining adaptability.
Solution Approach 2:
The patent uses beforehand cushioning by introducing switch delay parameters in the BWP configuration that compensate for the time needed during beam switching transitions. This cushioning period allows the UE to smoothly transition between BWPs without abrupt changes that would cause signal degradation, while still maintaining the ability to adapt to different beams efficiently.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a beam used for communicating with a network entity, the beam associated with multiple bandwidth parts (BWPs) including a reference BWP with a first frequency. The UE may receive a BWP configuration from the network entity, the BWP configuration based on changing a frequency for at least one BWP of the multiple BWPs form the first frequency to a second frequency. Additionally or alternatively, the UE may identify a timing threshold associated with a BWP switching operation for multiple BWPs associated with the beam. The UE may switch from the first BWP to a second BWP during the timing threshold. The UE may communicate with the network entity according to the BWP configuration or the second BWP.