Uplink Power Control in Energy-Saving Cells Without PUSCH
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Solution Overview
Problem
In wireless communication systems, particularly in network energy-saving modes, existing uplink power control methods are inadequate, leading to inefficiencies and increased interference, without addressing the need for enhanced reliability and spectral efficiency.
Innovation Solution
A method where transmit power is determined based on a time unit set, with the first node or second node adjusting power to the smallest value between a reference power and a threshold, and avoiding PUSCH transmission during specific time units, using DCI and RRC signaling to manage power control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If UE does not send PUSCH within a certain period of time in network energy-saving mode, then network power consumption is reduced, but uplink power control becomes inadequate leading to increased interference and reduced reliability
Solution Approach 1:
The patent applies dynamics by making the reference power configurable and adaptable based on network conditions and energy-saving requirements. The reference power can be dynamically adjusted through RRC signaling to match the actual transmission scenarios, allowing the system to transition between normal operation and energy-saving modes while maintaining appropriate power control for each state.
Solution Approach 2:
The patent changes the power control parameters by introducing a configurable reference power that can take different values depending on whether the network is in energy-saving mode or normal operation. This parameter change allows the system to optimize between power consumption and transmission reliability by selecting appropriate reference power values for different operational states.
2Device complexity
If existing uplink power control methods are used in energy-saving mode, then implementation is simple, but interference to other users increases and spectral efficiency decreases
Solution Approach 1:
The patent creates a universal power control mechanism that functions in both normal operation and energy-saving modes. By using a configurable reference power that can be adapted to different scenarios, the same basic power control framework serves multiple purposes: maintaining reliability when UE transmits frequently and reducing interference when UE transmits intermittently in energy-saving mode.
Solution Approach 2:
The patent implements feedback through the configurable reference power mechanism, where the network can adjust the reference power based on observed transmission patterns and interference levels. This allows the system to learn from actual performance and optimize power control parameters to improve spectral efficiency while managing interference in energy-saving scenarios.
3Ease of operation
If reference power is fixed in existing power control methods, then calculation is straightforward, but adaptability to different transmission scenarios is limited
Solution Approach 1:
The patent transforms the static reference power into a dynamic parameter that can be configured based on transmission scenarios. The reference power can be adjusted through RRC signaling to match different operational states, making the power control calculation simple yet adaptable to various transmission patterns including energy-saving mode operations.
Solution Approach 2:
The patent enables parameter changes by allowing the reference power to take different values based on the operational mode. This maintains calculation simplicity while improving adaptability, as the system can switch between different reference power configurations without changing the fundamental power control algorithm or requiring complex real-time calculations.
Data Source
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AI summary
Disclosed in the present application are a method and device used for wireless communication. A first node receives a first information block, and sends a first signal on a first cell after a first time unit set. The first information block is used to determine the first time unit set; transmit power of the first signal is the smallest value between a first reference power and a first power threshold, the first reference power depends on the first time unit set, and the first node does not send at least a PUSCH on the first cell in the first time unit set. The described method has the advantages that uplink power control is enhanced, the reliability of uplink transmission is improved, and interference is reduced.