5G Anchor Cell Selection via Historical Frequency Prioritization
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Solution Overview
Problem
In non-standalone 5G networking, terminals often fail to select the 5G anchor cell, resulting in lower transmission rates compared to camping on a 4G cell, due to frequency selection based on energy levels or cell measurement results, which does not account for the superior performance of 5G anchor cells.
Innovation Solution
A cell selection method that uses prior historical information to determine a 5G LTE frequency for cell measurement, evaluates the 5G anchor cell based on preset conditions, and optimizes the evaluation policy to improve the probability of selecting the 5G anchor cell as the serving cell, including adjusting measurement thresholds and priorities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If frequency selection is based on energy level or cell measurement result, then the cell selection process is simple and fast, but the terminal fails to select the 5G anchor cell and camps on non-5G cells, resulting in lower transmission rates
Solution Approach 1:
The terminal performs preliminary actions by storing prior historical information about 5G anchor cells and using this information to determine a first measurement frequency before performing cell measurement. This preliminary action ensures that the terminal prioritizes measuring 5G anchor cells, thereby improving the probability of selecting them and achieving higher transmission rates without significantly increasing overall process complexity.
Solution Approach 2:
The invention changes the parameter of measurement frequency selection by introducing a first measurement frequency determined from prior historical information, as opposed to selecting frequencies solely based on energy level. This parameter change enables the terminal to target 5G anchor cells specifically, improving transmission rate while maintaining a relatively simple selection process.
2Productivity
If the terminal uses a uniform evaluation policy for all cells, then the evaluation process is simple, but the terminal cannot optimize selection for 5G anchor cells which have superior performance
Solution Approach 1:
The terminal applies local quality by implementing a differentiated evaluation policy where 5G anchor cells (first cells) receive preferential treatment with a first preset duration, while other cells use a second preset duration. This localized quality improvement ensures that high-performance 5G anchor cells are selected more effectively, thereby improving transmission rate while adding only moderate complexity to the evaluation process.
Solution Approach 2:
The invention changes the evaluation policy parameters by introducing different preset durations for different cell types. The first preset duration applies to 5G anchor cells, while the second preset duration applies to other cells. This parameter differentiation optimizes the selection of high-performance cells without making the overall evaluation process overly complex.
3Productivity
If the terminal prioritizes measurement of all frequencies equally, then the measurement process is straightforward, but the terminal misses opportunities to camp on 5G anchor cells with higher transmission rates
Solution Approach 1:
The terminal performs preliminary action by determining a first measurement frequency based on prior historical information before conducting cell measurement. This preliminary step prioritizes frequencies that are likely to contain 5G anchor cells, thereby improving the probability of selecting high-transmission-rate cells while keeping the measurement process relatively straightforward.
Solution Approach 2:
The invention applies local quality by giving preferential treatment to the first measurement frequency determined from historical information, rather than measuring all frequencies equally. This localized prioritization enables the terminal to efficiently target 5G anchor cells and achieve higher transmission rates without significantly complicating the overall measurement process.
Data Source
AI summary
Embodiments of this application provide a cell selection method and an apparatus, and relate to the communications field. A terminal may determine a first measurement frequency and a 5G anchor cell at the first measurement frequency based on prior historical information. The terminal may shorten evaluation duration corresponding to a 5G anchor cell that meets a preferred condition at a first measurement frequency, so as to improve a probability that the terminal camps on the 5G anchor cell.