Uplink Channel Quality Measurement for Distributed Unit Switching
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Solution Overview
Problem
User equipment (UE) in 5G wireless communication systems cannot measure wireless channel quality for each distributed unit (DU) separately, limiting its ability to switch between DUs with better channel conditions, thus affecting transmission speed, throughput, and delay.
Innovation Solution
A communication device with a receiver and processor to measure uplink wireless channel quality and transmit results to a wireless communication control device, enabling measurement of channel quality for each DU under the same cell ID, allowing for optimal DU switching based on channel conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UE measures wireless channel quality for each DU separately, then transmission speed and throughput improve, but device complexity increases
Solution Approach 1:
The patent segments the measurement process by introducing DU-specific reference signals (RS) that allow UE to measure channel quality for each DU separately. This segmentation enables the UE to identify and measure reference signals associated with specific DUs, facilitating individual DU quality assessment without overwhelming complexity through structured signal design
Solution Approach 2:
The patent introduces reference signals as an intermediary mechanism between DUs and UE. These reference signals carry DU identification information and serve as a mediator that enables UE to measure channel quality for each DU separately. The reference signals act as a bridge that simplifies the measurement process while enabling fine-grained channel quality assessment
2Adaptability or versatility
If UE measures wireless channel quality for each DU separately, then ability to switch between DUs improves, but measurement precision requirements increase
Solution Approach 1:
The patent applies local quality by providing UE with reference signals that are specific to each DU, allowing measurements tailored to local channel conditions of each DU. Each reference signal is designed to reflect the specific channel characteristics between UE and its associated DU, enabling precise local quality assessment for informed DU switching decisions
Solution Approach 2:
The patent implements preliminary action by having the network pre-configure and transmit reference signals with DU identification information before UE needs to perform measurements. This preliminary provision of measurement resources enables UE to accurately measure channel quality for each DU when needed, without requiring complex real-time signal generation or processing
3Loss of time
If UE connects to DU with best uplink channel quality, then user data transmission delay reduces, but device complexity increases
Solution Approach 1:
The patent enables self-service by empowering UE to autonomously perform measurements on DU-specific reference signals, evaluate uplink channel quality for each DU, and make intelligent switching decisions based on measured results. This self-service capability allows UE to automatically connect to the DU with the best uplink channel quality without requiring complex network-controlled switching procedures
Solution Approach 2:
The patent implements feedback mechanisms where UE measures uplink channel quality for each DU using reference signals, reports measurement results to the network, and receives switching decisions based on this feedback. This feedback loop enables optimized DU selection that reduces transmission delay while managing complexity through structured information exchange between UE and network
Data Source
AI summary
A communication device that performs wireless communication with a terminal device, the communication device includes a receiver, a processor, and a transmitter. The receiver configured to receive a measurement request from a wireless communication control device which controls communication between the communication device and the terminal device. The processor configured to measure uplink wireless channel quality with the terminal device. The transmitter configured to transmit a result of the measurement to the wireless communication control device. The receiver receives control information related to the measurement of the uplink wireless channel quality from the wireless communication control device or another communication device.