Prohibit Timer for Wireless Signaling Efficiency
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Solution Overview
Problem
In wireless communication systems, frequent transmission of UE-originated indications leads to inefficient radio resource utilization, particularly during handovers between cells, as existing methods lack effective control mechanisms to manage these transmissions.
Innovation Solution
Implementing a prohibit timer mechanism in user equipment (UE) to restrict UE-originated indication transmissions during handovers and restarting it upon completion, ensuring optimized radio resource management and efficient signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE-originated indication is transmitted frequently to provide updated information to the network, then the network can optimize UE operation configuration, but radio resources are wasted due to excessive transmissions
Solution Approach 1:
The patent implements a prohibit timer that creates periodic transmission opportunities for UE-originated indications. The timer prevents continuous transmission by imposing a time interval between successive indications, allowing the UE to transmit only when the timer expires and new information is available. This periodic mechanism balances the need for network optimization with radio resource conservation.
Solution Approach 2:
The patent dynamically adjusts the prohibit timer value based on UE operation state changes. When the UE enters a new operation state (e.g., changing frequency, cell reselection), the prohibit timer is restarted or adjusted, allowing indication transmission only when state changes occur. This parameter adjustment ensures transmissions occur only when necessary, optimizing both network configuration and resource usage.
2Loss of energy
If prohibit timer is applied to restrict UE-originated indication transmission to save radio resources, then radio resource utilization improves, but the UE cannot transmit important indication during handover between cells
Solution Approach 1:
The patent applies the prohibit timer before handover occurs, allowing the UE to transmit indication proactively before the handover process begins. By restarting or clearing the prohibit timer upon detecting handover conditions (e.g., receiving handover command from network), the UE ensures that important indication can be transmitted in advance, maintaining network awareness during the critical handover transition.
Solution Approach 2:
The prohibit timer mechanism is made dynamic by allowing it to be restarted, cleared, or adjusted based on UE state changes and network conditions. During handover scenarios, the timer can be restarted when the UE enters a new cell or when specific handover indicators are detected, enabling flexible transmission control that adapts to changing operational contexts while preserving radio resources during stable periods.
3Productivity
If UE transmits UE-originated indication immediately upon state change to maintain accurate network information, then network operation efficiency improves, but radio resources are consumed by unnecessary transmissions
Solution Approach 1:
The patent implements a feedback mechanism where the UE monitors its own operation state changes and compares them against the prohibit timer status. The UE only transmits indication when both conditions are met: a state change occurs AND the prohibit timer has expired or been cleared. This feedback loop ensures transmissions occur only when genuinely necessary, maintaining network operation efficiency while avoiding redundant radio resource consumption.
Solution Approach 2:
The UE autonomously manages its indication transmission by self-monitoring operation states and self-regulating transmissions through the prohibit timer mechanism. The UE determines on its own when transmission is appropriate based on internal state changes and timer status, eliminating the need for network-controlled transmission scheduling. This self-service approach optimizes both network efficiency and resource usage without requiring additional network signaling overhead.
Data Source
AI summary
A method for restarting a prohibit timer in a wireless communication system, the method performed by a user equipment (UE) includes starting the prohibit timer related to a transmission of power preference information; receiving, from a network, a handover message including a timer value; performing a handover procedure based on the received handover message; restarting the prohibit timer based on applying the received timer value included in the handover message; and stopping the prohibit timer based on whether the UE initiates radio resource control (RRC) re-establishment procedure while the prohibit timer is running. Further, upon initiating the RRC re-establishment procedure, the UE disables the transmission of the power preference information and stops the prohibit timer.