Cell Reselection Timer Reconfiguration for Sleep State Delays
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Solution Overview
Problem
The existing cell reselection methods in communication systems, such as those defined by the 3GPP standard, face delays and inefficiencies when a terminal is in a sleeping state, as the cell reselection timer expires before the terminal wakes up, leading to a delay in reselecting a better cell.
Innovation Solution
A method and apparatus that allow for the optimization of the cell reselection timer by reconfiguring its expiration time based on received timer information, ensuring that cell reselection can occur before the terminal enters a sleeping state, thereby reducing delays and improving communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the terminal uses the existing cell reselection timer without optimization, then the terminal can maintain simple operation, but the cell reselection is delayed when the terminal is in sleeping state
Solution Approach 1:
The patent applies preliminary action by setting the cell reselection timer to expire before the terminal enters sleeping state. This ensures that cell reselection is completed in advance during the active state, avoiding delays when the terminal is sleeping. The timer is configured to trigger reselection before the sleep period begins, allowing the terminal to switch cells proactively rather than reactively after waking up.
Solution Approach 2:
The patent implements dynamics by making the timer expiration time adjustable based on terminal state. The system dynamically adapts the timer configuration according to whether the terminal is in active or sleeping state, optimizing the reselection timing for each state. This dynamic adjustment allows the timer to expire at the most appropriate moment for cell reselection, improving responsiveness without fixed rigid timing.
2Productivity
If the terminal waits until wake-up to perform cell reselection, then power saving is maintained, but communication efficiency decreases due to reselection delay
Solution Approach 1:
The patent applies preliminary action by initiating cell reselection before the terminal enters sleeping state. The timer is configured to expire during the active state, allowing the terminal to complete cell reselection in advance. This ensures that when the terminal wakes up, it is already connected to the optimal cell, maintaining high communication efficiency without waiting for wake-up.
Solution Approach 2:
The patent ensures continuity of useful action by maintaining the cell reselection process during the active state before sleep. The timer and reselection mechanism remain active and functional during the awake period, continuously monitoring and preparing for optimal cell selection. This continuous operation ensures that cell reselection is never interrupted or delayed by the sleep-wake cycle.
Data Source
AI summary
A method for operating of a terminal in a communication system is provided. The method includes receiving first information for cell reselection, reconfiguring an expiration time of a cycle of a timer of the terminal based on the received first information for cell reselection, and determining second information for cell reselection at the reconfigured expiration time of the cycle of the timer of the terminal for cell reselection.