User Equipment DU Selection via Central Unit Doppler Shift
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Solution Overview
Problem
In wireless communication systems where the Central Unit (CU) and Distributed Unit (DU) are separated, user equipment faces challenges in quickly and accurately selecting a suitable DU device for information transmission.
Innovation Solution
The user equipment and Central Unit device exchange selection information, enabling the user equipment to determine a suitable DU device based on received information, which includes Doppler shift values and other parameters, to facilitate efficient communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If user equipment independently scans frequency bands and beams to select a DU device, then selection accuracy can be improved, but the time required for selection increases significantly
Solution Approach 1:
The CU device performs preliminary calculations of Doppler shift values for multiple DU devices in advance, before the UE needs to select a DU. This pre-computed information is then provided to the UE, allowing it to make accurate selection decisions without performing time-consuming independent scans, thus resolving the contradiction between selection accuracy and selection time
Solution Approach 2:
The CU device acts as an intermediary that computes Doppler shift information and provides it to the UE. This intermediary role allows the UE to obtain accurate selection data without having to perform the complex calculation and scanning processes itself, thereby reducing selection time while maintaining accuracy
2Measurement precision
If the CU device provides detailed selection information to all UEs, then UE can make accurate DU selections, but the signaling overhead and system complexity increase
Solution Approach 1:
The CU device provides Doppler shift information specifically tailored to each UE's location and service requirements. Rather than providing universal information to all UEs, the system customizes the information content based on local conditions, maintaining high selection accuracy while reducing unnecessary signaling overhead and system complexity
Data Source
AI summary
The present disclosure relates to a user equipment, a centralized unit device, a wireless communication method and a storage medium. The user equipment of the present disclosure comprises a processing circuit, wherein the processing circuit is configured to receive, from a centralized unit (CU) device, selection information related to a selection made by a distributed unit (DU) device; and determine, according to the selection information, a DU device for providing a service for the user equipment. By using the user equipment, the centralized unit device, the wireless communication method and the storage medium of the present disclosure, the user equipment can quickly and accurately find the most suitable DU device with the help of the CU device.