Cell Selection Method Using Bandwidth Thresholds
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Solution Overview
Problem
Existing cell selection and reselection methods in communication systems do not comprehensively consider bandwidth factors, leading to undesirable communication quality and user experience due to potential data transmission rate reductions.
Innovation Solution
A method where terminal devices search for candidate cells, receive system messages containing bandwidth information, and prioritize camping on cells with bandwidth greater than a preset threshold, ensuring higher data transmission rates and improved user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminal devices perform cell selection based on conventional criteria (PLMN, cell barred status, TAI, Srxlev, Squal), then the cell selection process is simple and fast, but the communication quality and data transmission rate are compromised due to insufficient bandwidth consideration
Solution Approach 1:
The patent modifies the cell selection criteria by adding bandwidth as a new parameter. The terminal device evaluates multiple parameters including PLMN status, cell barred status, TAI, Srxlev, Squal, and now bandwidth. By changing the selection parameters to include bandwidth information, the system achieves better communication quality while maintaining a structured evaluation process.
2Productivity
If terminal devices camp on cells with smaller bandwidth to ensure coverage, then network coverage is maintained, but data transmission rate is reduced
Solution Approach 1:
The patent introduces bandwidth as a critical parameter in cell selection. The terminal device compares the bandwidth of candidate cells against a threshold and preferentially selects cells with larger bandwidth. This parameter change enables the system to achieve higher data transmission rates while maintaining communication quality through comprehensive multi-parameter evaluation.
3Reliability
If terminal devices consider more parameters (including bandwidth) in cell selection, then communication quality improves, but the cell selection process becomes more complex and time-consuming
Solution Approach 1:
The patent systematically adds bandwidth parameter to the existing cell selection evaluation. By integrating bandwidth information into the standard cell selection procedure, the system achieves better communication quality. The structured approach of evaluating multiple parameters in a defined sequence helps manage the time consumption while improving selection accuracy.
Data Source
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AI summary
This application provides a cell selection method, a cell reselection method, and a chip, to improve user experience. The cell selection method includes: A terminal device searches for a first candidate cell, and receives a system message of the first candidate cell, where the system message includes parameter information of the first candidate cell and bandwidth information of the first candidate cell, and the bandwidth information is used to indicate a bandwidth of the first candidate cell. The terminal device determines a cell selection reception level value Srxlev and a cell selection quality value Squal of the first candidate cell based on cell measurement values and the parameter information of the first candidate cell, and determines that Srxlev > 0 and Squal > 0. When the bandwidth of the first candidate cell is greater than a preset threshold, the terminal device camps on the first candidate cell.