Smart Repeater Cell State Determination for 5G Coverage
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Solution Overview
Problem
5G mobile communication systems, particularly in the millimeter waveband, face severe signal fading issues due to higher carrier frequencies, leading to challenges in achieving effective cell coverage compared to 3G and 4G systems, and traditional RF repeaters lack flexibility in adapting to environmental changes.
Innovation Solution
A smart repeater system that receives and processes side control information from network devices to enhance signal amplification and forwarding, allowing for more efficient noise reduction and spatial directionality, and includes a method for cell state determination during selection or reselection procedures to ensure flexible deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional RF repeaters are used for coverage enhancement in 5G systems, then signal amplification is achieved, but flexibility to cope with complex environmental changes is insufficient
Solution Approach 1:
The smart repeater is equipped with cell selection and reselection capabilities, allowing it to autonomously determine candidate cells and make deployment decisions without requiring continuous network control, thereby achieving self-service and improved adaptability to environmental changes
Solution Approach 2:
The repeater dynamically selects and reselects candidate cells based on current environmental conditions and signal quality, enabling flexible adaptation to changing deployment scenarios while maintaining reliable signal amplification
2Adaptability or versatility
If smart repeater performs cell selection and reselection, then flexible deployment is enabled, but method for cell state determining is currently missing
Solution Approach 1:
The network device pre-configures the smart repeater with cell selection and reselection parameters and candidate cell information before deployment, allowing the repeater to perform cell state determination without complex real-time decision-making capabilities
Solution Approach 2:
The network device acts as an intermediary by providing cell selection parameters and candidate cell information to the smart repeater, simplifying the repeater's cell state determination function while enabling flexible deployment
3Productivity
If higher carrier frequencies are used in 5G systems, then larger bandwidths and higher data rates are achieved, but signal fading becomes more severe
Solution Approach 1:
The smart repeater serves as an intermediary signal forwarding node between the network device and terminal equipment, amplifying and regenerating signals to compensate for severe fading effects caused by high carrier frequencies, thereby maintaining both high data rates and signal reliability
Data Source
AI summary
A cell state determining apparatus, applicable to a Network-Controlled repeater (NCR), includes: a receiver configured to receive relevant information of cell selection or reselection, and processor circuitry configured to consider a cell as a candidate for cell selection for Network-Controlled repeater according to the relevant information of cell selection or reselection, and/or, ignore the relevant information of cell selection or reselection.