PUCCH Power Control Offsets for 5G Uplink
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Solution Overview
Problem
The existing power control methods for PUCCH in 5G NR communication systems fail to accurately reflect the effects of payload size, number of OFDM symbols, number of RBs, and frequency hopping on transmit power, leading to inefficiencies in power management and potential interference.
Innovation Solution
A power control method where a second communication node configures transmit power offsets based on the payload size, number of OFDM symbols, number of RBs, and frequency hopping status for PUCCH transmission, enabling more precise uplink transmit power control between communication nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional power control methods are used for PUCCH, then the power control process is simple, but the transmit power cannot be accurately controlled considering payload size, OFDM symbols, RBs, and frequency hopping
Solution Approach 1:
The patent introduces multiple power control parameters including payload size-dependent offsets, OFDM symbol-count-dependent offsets, RB-count-dependent offsets, and frequency hopping-dependent offsets. By changing and differentiating these parameters based on specific transmission conditions, the system achieves accurate transmit power control that adapts to varying PUCCH configurations and transmission scenarios.
2Reliability
If transmit power is increased to ensure reliable PUCCH transmission, then transmission reliability improves, but power consumption and interference increase
Solution Approach 1:
The patent applies local quality by configuring different power control parameters for different PUCCH transmission scenarios. Instead of using a uniform high power level, the system adjusts power parameters locally based on specific conditions such as payload size, number of OFDM symbols, number of RBs, and frequency hopping status. This ensures sufficient transmission reliability for each specific case while avoiding unnecessary power consumption and interference.
Solution Approach 2:
The patent implements dynamic power control by making power parameters adaptive to changing transmission conditions. The power control parameters dynamically adjust based on payload size, OFDM symbol count, RB count, and frequency hopping configuration. This dynamic adjustment ensures that transmit power is optimized for each specific transmission instance, maintaining reliability while minimizing power consumption and interference.
Data Source
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AI summary
Provided are a power control method, a power control apparatus, a base station, a terminal and a computer-readable storage medium. The method includes: a second communication node configuring a power control parameter for a first communication node, where the power control parameter includes at least one transmit power offset, and the transmit power offset is determined by at least one of: a payload size of physical uplink control channel (PUCCH) transmission, a number of orthogonal frequency division multiplexing (OFDM) symbols occupied by PUCCH transmission, a number of resource blocks (RBs) occupied by PUCCH transmission, or whether a PUCCH is subjected to frequency hopping.