Adaptive Modulation Order Selection for Uplink Control Channel
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting physical uplink control channels, particularly in adapting modulation orders based on payload size to optimize resource usage in next-generation wireless communication systems.
Innovation Solution
A method for determining and applying adaptive modulation orders, such as QPSK, 16 QAM, or 64 QAM, to uplink control information based on payload size, and deciding on bundling strategies for acknowledgment information transmission to efficiently utilize limited uplink resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed modulation order is used for PUCCH transmission, then implementation is simple, but resource utilization efficiency is low and cannot adapt to varying payload sizes
Solution Approach 1:
The patent implements dynamic modulation order selection based on payload size categories. The terminal determines the modulation order (first, second, or third modulation order) according to the size of uplink control information, transforming the fixed system into a dynamic one that adapts to varying data conditions, thereby resolving the contradiction between simplicity and adaptability.
Solution Approach 2:
The patent changes the modulation order parameter based on payload size thresholds. By categorizing payload sizes and selecting different modulation orders (e.g., QPSK, 16QAM, 64QAM) accordingly, the system optimizes resource utilization while maintaining manageable implementation complexity through predefined parameter mappings.
2Productivity
If higher modulation order is always used, then spectral efficiency is improved, but error rate increases and reliability decreases
Solution Approach 1:
The patent dynamically adjusts the modulation order parameter based on payload size categories. Smaller payloads use lower modulation orders (e.g., QPSK) for higher reliability, while larger payloads use higher modulation orders (e.g., 64QAM) for improved spectral efficiency, thus resolving the contradiction between productivity and reliability through adaptive parameter selection.
Solution Approach 2:
The system transitions from static to dynamic modulation order selection, where the modulation order is chosen based on real-time payload size assessment. This dynamic adaptation allows the system to optimize both spectral efficiency and reliability according to actual transmission conditions rather than using a fixed high-order modulation that would compromise reliability.
3Productivity
If payload size is increased to transmit more control information, then communication capacity is improved, but transmission time increases and latency increases
Solution Approach 1:
The patent changes the modulation order parameter to match payload size categories, allowing efficient packing of control information. By selecting appropriate modulation orders (first, second, or third) based on payload size, the system maximizes communication capacity while minimizing transmission time, as higher modulation orders can convey more bits per symbol without proportionally increasing transmission duration.
Data Source
AI summary
Disclosed are a method for transmitting a physical uplink control channel by a terminal in a wireless communication system and an apparatus supporting the same. As a specific example, a terminal according to an embodiment of the present invention may determine a modulation order to be applied to uplink control information (UCI) to be transmitted, on the basis of a payload size of the UCI, and transmit the UCI, to which the determined modulation order has been applied, via a PUCCH resource. The terminal is capable of communicating with at least one of another terminal, a terminal related to an autonomous driving vehicle, a base station or a network.