Cell Selection Using Multi-Antenna Received Power for Connection Reliability
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Solution Overview
Problem
Communication networks face challenges in maintaining reliable connections and data transmission speeds due to varying received power of reference signals across different antennas in electronic devices, leading to issues like RACH failure and radio link failure during cell selection and handover.
Innovation Solution
An electronic device with multiple antennas uses received power-related information, such as RSRP and RSRQ, to determine if preset conditions are met for connection or data transmission, ensuring successful cell selection and preventing transmission quality deterioration by selecting appropriate cells based on signal strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cell selection is based on received power of reference signal from Rx antenna only, then cell selection process is simple, but connection success rate and data transmission speed deteriorate when Tx-Rx antenna is hidden
Solution Approach 1:
The patent combines the received power measurements from both Rx antenna and Tx-Rx antenna into a unified cell selection criterion. By merging these measurements, the system achieves more reliable connection decisions that account for both reception capability and transmission capability, resolving the contradiction between simple cell selection and connection reliability.
Solution Approach 2:
The patent makes the cell selection process universal by considering multiple antenna types (Rx antenna and Tx-Rx antenna) with different functions. This multi-functional approach ensures that cell selection is not limited to reception-only criteria but incorporates transmission capabilities as well, improving overall connection success rate.
2Device complexity
If cell selection ignores Tx-Rx antenna received power, then measurement process is simple, but data transmission speed significantly slows down
Solution Approach 1:
The patent performs preliminary measurement of received power from both Rx antenna and Tx-Rx antenna before final cell selection. This preliminary action ensures that transmission quality is assessed in advance, preventing selection of cells that would cause significant data transmission speed reduction, while the measurement process remains integrated into the existing cell selection workflow.
3Reliability
If received power information from multiple antennas is considered, then connection reliability is improved, but cell selection process becomes more complex
Solution Approach 1:
The patent changes the parameter used for cell selection from a single antenna type to multiple antenna types. By modifying the selection criterion to include both Rx antenna and Tx-Rx antenna received power measurements, the system improves connection reliability while the added complexity is managed through standardized measurement procedures already present in mobile communication systems.
Data Source
AI summary
A method for selecting a cell by an electronic device including a plurality of antennas includes obtaining first received power-related information for a reference signal received from a first cell of a first network through a first antenna of the plurality of antennas configured to transmit and receive signals, determining whether the first received power-related information meets a preset first condition, and when the first received power-related information meets the first condition, forming a connection with the first cell or transmitting at least a portion of the first received power-related information to the first cell or a second cell of the first network.