Prohibit Timer Handling for UE Capability Reporting
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Solution Overview
Problem
In wireless communication systems, UEs experience overheating issues due to frequent signaling attempts when trying to report changed capabilities, and the prohibit timer restricts such reporting, leading to misconfiguration and inefficient power management.
Innovation Solution
Allowing UEs to transmit UE Assistance Information messages when temporary capabilities change, even during a running prohibit timer, to prevent extreme overheating and ensure accurate capability reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a prohibit timer is used to restrict UE capability reporting, then frequent signaling is reduced, but the UE cannot report changed capabilities in time leading to misconfiguration and overheating
Solution Approach 1:
The patent applies dynamics by making the prohibit timer conditionally applicable rather than always active. The timer is suspended when the UE experiences overheating or detects capability changes, allowing dynamic adjustment of reporting restrictions based on real-time UE state. This resolves the contradiction by enabling capability reporting when needed while maintaining signaling reduction during normal operation.
Solution Approach 2:
The patent changes the parameter state of the prohibit timer from a fixed active state to a conditional state that can be suspended or restarted based on UE conditions. When overheating is detected or capability changes occur, the timer parameter is effectively changed from active to suspended, allowing capability reporting to proceed without restriction.
2Productivity
If the prohibit timer restricts UE capability reporting, then signaling frequency is reduced, but UE overheating cannot be prevented
Solution Approach 1:
The patent applies preliminary anti-action by having the UE proactively suspend the prohibit timer when detecting overheating conditions before they become critical. This preemptive suspension of the timer allows the UE to report capability changes that indicate reduced performance needs, preventing further overheating while maintaining signaling efficiency during normal operation.
3Measurement precision
If capability reporting is always allowed, then accurate capability information is maintained, but frequent signaling causes power consumption and overheating
Solution Approach 1:
The patent applies partial action by implementing selective capability reporting based on actual need. The prohibit timer provides general restriction to reduce signaling, but this restriction is partially lifted when capability changes occur or overheating is detected. This ensures capability information is reported accurately when necessary while maintaining power efficiency during stable operation periods.
Data Source
Figure 1~2a
Figure 2b
Figure 3(a)~3(b)
AI summary
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for handling of a prohibit timer to transmit a RRC message related to UE capability restriction in wireless communication system, the method comprising: transmitting a first UE Assistance Information message indicating temporary information related to UE capability, when the UE has overheating problem; starting a timer when the first UE Assistance Information message is transmitted; and transmitting a second UE Assistance Information message if temporary information related to UE capability in the second UE Assistance Information is changed from the temporary information related to UE capability in the first UE Assistance Information message while the timer is running.