Method and apparatus for selecting cell of terminal in wireless communication system
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Solution Overview
Problem
In wireless communication systems, terminals face inconvenience and increased power consumption due to the location area update procedure after ending a call, which can result in missed received calls and excessive battery usage.
Innovation Solution
A method and apparatus that allow terminals to search and select cells based on previous camp-on information, prioritizing cells with the best signal strength matching those used before and during the call, minimizing location area updates and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal performs a location area update procedure after ending a call, then the terminal can update its location information, but the procedure consumes additional battery power
Solution Approach 1:
The terminal stores location information of previously camped cells in advance. When a location area update is needed, the terminal can restore its location state from the stored information rather than performing a complete update procedure, thereby reducing battery power consumption while maintaining location information accuracy.
2Speed
If the terminal selects a cell based on current signal strength alone, then the terminal can quickly select a cell, but the terminal may perform unnecessary location area updates when signal strengths of multiple cells are identical
Solution Approach 1:
The terminal stores location information of previously camped cells before cell selection. When multiple cells have identical signal strengths, the terminal uses the stored historical location information as a tiebreaker to select the most appropriate cell, avoiding unnecessary location area updates and improving cell selection stability without significantly impacting selection speed.
Data Source
AI summary
A method and an apparatus for selecting a cell of a terminal in a wireless communication system are provided. The method includes detecting, by the terminal, an end of a call, performing, when an end of the call is detected, a cell search based on a cell used during the call, the cell search being performed among at least one cell having been used before the call by the terminal and a cell used just before forming the call, and determining a cell to which the cell selection is performed, based on a result of the cell search and the cell used just before forming the call.