Terminal Cell Reselection Using LTE Dedicated Priority List
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Solution Overview
Problem
The establishment of dedicated priority lists by non-LTE mobile communication systems leads to increased signaling and high costs for network upgrades during cell reselection processes.
Innovation Solution
A method where a terminal performs cell reselection using a dedicated priority list obtained from an LTE system, thereby freeing the non-LTE system from establishing its own dedicated priority list, and utilizing a public priority list when the dedicated list expires or is unavailable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-LTE mobile communication systems establish dedicated priority lists for cell reselection, then cell reselection can be performed with system-specific optimization, but signaling overhead increases and network upgrade costs increase
Solution Approach 1:
The patent applies universality by enabling the LTE system's dedicated priority list to serve multiple purposes: it is used both for LTE cell reselection and for non-LTE cell reselection. This eliminates the need for separate dedicated priority lists in non-LTE systems, reducing signaling overhead while maintaining system-specific optimization capabilities.
Solution Approach 2:
The patent uses copying by having the terminal obtain and reuse the dedicated priority list from the LTE system for non-LTE cell reselection operations. Instead of creating a new priority list in the non-LTE system, the terminal copies the priority information from LTE, thereby avoiding duplicate signaling and reducing network complexity.
2Reliability
If non-LTE mobile communication systems establish dedicated priority lists for cell reselection, then cell reselection can be performed with system-specific optimization, but network upgrade costs increase
Solution Approach 1:
The patent applies universality by enabling the LTE system's dedicated priority list to serve multiple purposes: it is used both for LTE cell reselection and for non-LTE cell reselection. This eliminates the need for separate dedicated priority lists in non-LTE systems, reducing signaling overhead while maintaining system-specific optimization capabilities.
Solution Approach 2:
The patent uses copying by having the terminal obtain and reuse the dedicated priority list from the LTE system for non-LTE cell reselection operations. Instead of creating a new priority list in the non-LTE system, the terminal copies the priority information from LTE, thereby avoiding duplicate signaling and reducing network complexity.
3Adaptability or versatility
If the terminal measures multiple frequencies and systems for cell reselection, then the terminal can select from more available cells, but measurement overhead increases and power energy is consumed
Solution Approach 1:
The patent applies segmentation by dividing the cell reselection process into priority-based stages. The terminal first measures and evaluates cells according to priority levels indicated in the dedicated priority list, rather than measuring all available cells simultaneously. This segmented approach reduces measurement overhead and power consumption while maintaining the ability to select from multiple frequencies and systems.
Solution Approach 2:
The patent uses preliminary action by pre-configuring priority information in the dedicated priority list before the terminal performs measurements. The network provides priority indications in advance, allowing the terminal to pre-determine which cells to measure first, thereby reducing unnecessary measurements and saving power energy.
4Use of energy by moving object
If the terminal uses priority-based cell reselection to reduce measurements, then power energy is saved, but the terminal may miss higher priority cells
Solution Approach 1:
The patent uses preliminary action by pre-configuring priority information in the dedicated priority list before the terminal performs measurements. The network provides priority indications in advance, allowing the terminal to pre-determine which cells to measure first, thereby reducing unnecessary measurements and saving power energy.
Solution Approach 2:
The patent applies feedback by continuously monitoring cell conditions and adjusting measurements based on priority list updates from the network. When the terminal camps on a lower priority cell, it can periodically measure higher priority cells as indicated by the network, ensuring that important cells are not missed while maintaining power savings during normal operation.
Data Source
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AI summary
A computer program product and computer readable medium are disclosed. The computer program product comprises computer program code, which, when executed by a computer unit, will cause the computer unit to perform: obtaining a dedicated priority list from a LTE system, when a terminal in a cell of a LTE system; and performing cell reselection according to the dedicated priority list obtained from the LTE system, when the terminal camps on a cell of a non-LTE system. According to an embodiment of the invention, the terminal performs cell reselection by using the dedicated priority list obtained from the LTE system so as to free the non-LTE system from establishing the dedicated priority list. Problems in the prior arts that establishment of the dedicated priority list causes too much increased signaling and too high costs for network upgrade are solved.