UE Cell Selection Using Feature Information and Signal Strength
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Solution Overview
Problem
In cellular radio communication systems, users experience inconsistent service levels when near cell boundaries due to partial deployment of advanced features, leading to poor user experience and inability to select 'feature-rich' cells, especially in scenarios with different feature sets across adjacent cells.
Innovation Solution
A method in user equipment (UE) to control cell selection by obtaining feature information and signal strength, considering the UE's type and usage history to selectively choose cells supporting subsequent communication, enabling the UE to exploit 'hot spot' cells with richer features and optimize network usage in partial deployment scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If advanced HSPA features are deployed initially in important urban locations called hotspots, then higher data rate and lower battery consumption are achieved in those areas, but service inconsistency occurs at cell boundaries where different feature sets are available
Solution Approach 1:
The UE proactively obtains feature information from multiple neighboring cells before making a cell selection or reselection decision. By提前 acquiring knowledge of which cells support advanced HSPA features, the UE can make an informed selection to connect to a feature-rich cell, ensuring consistent service quality even at cell boundaries where signal strengths of different cells are comparable.
2Use of energy by moving object
If the UE remains connected in the CELL FACH state to support higher data rate and consume less battery, then energy efficiency is improved, but the UE cannot control selection of feature-rich cells when multiple cells are available
Solution Approach 1:
The UE implements a feedback mechanism where it continuously monitors and obtains feature information from neighboring cells while in CELL FACH state. Based on this feedback information about which cells support advanced features, the UE can autonomously perform cell reselection to connect to feature-rich cells, thereby maintaining both energy efficiency and the ability to select optimal cells for service quality.
3Ease of operation
If cell reselection is based only on signal strength, then simple and fast cell selection is achieved, but the UE cannot select feature-rich cells leading to poor user experience
Solution Approach 1:
The invention extends the cell selection criteria by adding a new parameter dimension - feature information - to the traditional signal strength-based selection. The UE now evaluates cells based on both signal strength and feature support, creating a composite selection metric. This allows the UE to prefer cells with advanced HSPA features when signal strengths are comparable, thereby improving service quality without significantly complicating the selection process.
Data Source
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AI summary
When a user equipment, UE, is in a situation involving selection or reselection of radio cell to use in subsequent communication, in addition to the signal strength, the UE considers the feature set supported in the cell. The type of phone, i.e. a "smart phone", "feature phone", "Facebook-only phone" etc. can also be considered together with information about the usage history. That is, the usage pattern of the mobile and web browsing history.