Uplink Signal Control via Timer Restart Logic
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Solution Overview
Problem
In wireless communication systems, the existing methods for controlling uplink signal transmission lead to redundant signaling, control delays, and unnecessary battery usage due to the need for frequent random access procedures and timing advance adjustments, especially in scenarios with few users or small cells, resulting in degraded user experience and inefficient resource utilization.
Innovation Solution
A method that omits the random access procedure and uplink signal reconfiguration when a timer for uplink signal transmission is restarted, allowing continuous transmission based on existing configuration until new instructions are received, thereby reducing control signaling and battery consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE performs random access procedure and uplink signal reconfiguration when timer is restarted, then timing advance can be updated and uplink synchronization can be maintained, but control signaling overhead increases and control delay occurs
Solution Approach 1:
The UE determines in advance whether the TA value is still valid by checking if it falls within the valid TA range before timer restart. This preliminary check avoids unnecessary random access procedures and reconfiguration signaling, eliminating control delays while ensuring uplink synchronization is maintained when needed.
2Productivity
If the UE sends uplink signal continuously based on existing configuration, then data transmission can proceed without interruption, but battery power is wasted when TA is no longer valid
Solution Approach 1:
The UE implements feedback by monitoring whether the current TA value remains within the valid range. When the TA becomes invalid, the UE stops sending uplink signals and initiates random access procedure to obtain a new TAC. This feedback mechanism ensures continuous data transmission when TA is valid while preventing battery waste when TA is invalid.
3Loss of time
If the TAT is set to a relatively long duration, then the number of timer expirations decreases and signaling overhead is reduced, but the UE sends useless uplink signals when TA is no longer valid
Solution Approach 1:
Before sending uplink signals, the UE performs a preliminary check to determine if the current TA value is within the valid range. This preliminary action prevents the UE from sending useless uplink signals when TA has expired, even when the TAT is set to a long duration. The check ensures that uplink signals are only transmitted when synchronization is still valid.
Data Source
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AI summary
The present invention discloses a method for controlling uplink signal transmission, a user equipment, and a base station. The method for controlling uplink signal transmission includes: receiving uplink signal configuration information sent by a base station; sending an uplink signal to the base station according to the uplink signal configuration information before a first timer expires; stopping sending an uplink signal to the base station when the first timer expires; receiving trigger information sent by the base station, and restarting the first timer according to the trigger information; and sending an uplink signal to the base station before the restarted first timer expires. According to embodiments of the present invention, a random access procedure and/or sending of uplink signal reconfiguration information can be not performed when a timer for controlling uplink signal sending is restarted, thereby reducing sending of control signaling and a useless uplink signal, reducing system overheads, reducing a control delay, speeding up sending of uplink and downlink data, saving battery power of a user equipment, extending standby time of the user equipment, and enhancing user experience.