BWP Switching for RedCap UE Positioning Accuracy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing bandwidth and positioning accuracy, particularly for reduced capability (RedCap) user equipment (UE) due to limited bandwidth and narrowband SRSp transmission, which degrades positioning accuracy.
Innovation Solution
Implementing bandwidth part (BWP) switching and burst SRSp transmission methods for RedCap UE, allowing for frequency diversity gains and improved positioning accuracy by configuring SRSp resources and switching between multiple BWPs based on predefined patterns and timers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If RedCap UE uses narrowband SRSp transmission, then device complexity is reduced, but positioning accuracy deteriorates
Solution Approach 1:
The patent segments the bandwidth into multiple BWPs (Bandwidth Parts) and configures SRSp transmission across multiple BWPs simultaneously. This allows the UE to transmit positioning signals using a combination of narrowband and widerband resources, achieving frequency diversity without requiring the UE to continuously operate at full bandwidth, thus reducing device complexity while improving positioning accuracy.
Solution Approach 2:
The patent introduces the frequency domain dimension by configuring SRSp transmission across multiple BWPs with different bandwidths. The UE can select appropriate BWPs based on frequency diversity requirements, effectively adding a dimensional approach to the transmission strategy that balances complexity and accuracy.
2Measurement precision
If BWP switching is implemented, then positioning accuracy is improved through frequency diversity, but device complexity increases
Solution Approach 1:
The patent configures multiple BWPs and their switching patterns in advance through network signaling before the actual SRSp transmission. The UE receives configuration information about available BWPs and their characteristics, and the network pre-determines the optimal switching sequence based on positioning requirements, reducing the need for real-time complex decision-making at the UE.
Solution Approach 2:
The patent implements dynamic BWP switching where the active BWP can be changed based on real-time positioning needs and network conditions. The UE can transition between different BWPs during SRSp transmission to achieve frequency diversity, and the network can dynamically adjust the switching configuration to balance positioning accuracy with UE complexity.
3Measurement precision
If multiple BWPs are configured for SRSp transmission, then frequency diversity gain is improved, but time duration for switching increases
Solution Approach 1:
The patent configures periodic SRSp transmission patterns where the UE transmits positioning signals at regular intervals across multiple BWPs. This periodic structure allows the network to accumulate positioning information over time from different frequency resources without requiring continuous switching, thereby achieving frequency diversity while controlling the overall time duration through structured periodic transmission.
Solution Approach 2:
The patent ensures continuous useful action by maintaining SRSp transmission across multiple BWPs in an overlapping or sequential manner without idle gaps. The UE can transmit signals in different BWPs simultaneously or in continuous sequence, ensuring that the frequency diversity benefit is realized without introducing unnecessary time delays, thus balancing positioning accuracy with time efficiency.
Data Source
AI summary
An embodiment relates to a next-generation wireless communication system to support a higher data rate after 4th-generation (4G) wireless communication systems. According to the embodiment, a method of transmitting and receiving a signal in a wireless communication system and apparatus for supporting the same may be provided. In addition, other embodiments may also be provided.