Priority-Aware UCI Multiplexing on PUSCH for 5G Uplink
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively providing services due to the need for efficient multiplexing and demultiplexing of uplink control information (UCI) with different priorities, such as high priority HARQ-ACK and low priority HARQ-ACK, which affects the performance of 5G communication systems, especially in scenarios involving diverse services like eMBB, mMTC, and URLLC.
Innovation Solution
A method and apparatus for a terminal and base station to perform UCI multiplexing and demultiplexing operations, including rate matching and encoding/decoding of UCI sequences with different priorities, such as high priority HARQ-ACK and low priority HARQ-ACK, on the physical uplink shared channel (PUSCH), enabling efficient transmission and reception of UCI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UCI with different priorities is multiplexed on PUSCH, then the efficiency of communication services is enhanced, but the complexity of multiplexing and demultiplexing operations increases
Solution Approach 1:
The patent segments UCI into different priority levels (first priority UCI and second priority UCI) and applies different rate matching methods to each segment. The first priority UCI uses a first rate matching method while the second priority UCI uses a second rate matching method, allowing independent handling of different UCI types to improve overall efficiency while managing complexity through structured segmentation.
Solution Approach 2:
The patent applies different rate matching parameters and methods to different UCI segments based on their priority levels. The first priority UCI receives different rate matching treatment compared to the second priority UCI, allowing each segment to be optimized for its specific requirements and improving overall system efficiency.
2Reliability
If rate matching is performed for UCI sequences with different priorities, then the transmission reliability is improved, but the processing time increases
Solution Approach 1:
The patent segments the rate matching process into separate operations for first priority UCI and second priority UCI. By performing rate matching for the first priority UCI sequence and the second priority UCI sequence independently and in a structured manner, the system ensures reliable transmission of critical information while managing processing time through efficient segmentation.
Solution Approach 2:
The patent performs rate matching operations in a predetermined sequence based on priority levels. The first priority UCI rate matching is performed before the second priority UCI rate matching, allowing critical information to be processed and transmitted first, thereby improving reliability without significantly increasing overall processing time.
3Adaptability or versatility
If UCI multiplexing operations are performed on PUSCH, then the adaptability to diverse services is improved, but the device complexity increases
Solution Approach 1:
The patent implements a universal UCI multiplexing mechanism on the PUSCH that can handle multiple types of UCI (first priority UCI, second priority UCI, and other UCI) using a unified framework. This multi-functional approach allows the system to adapt to diverse services (eMBB, mMTC, URLLC) while managing complexity through a standardized multiplexing structure.
Solution Approach 2:
The patent employs dynamic rate matching where the rate matching parameters and methods are adjusted based on the priority level and type of UCI being transmitted. This dynamic adaptation allows the system to optimize performance for different services and UCI types while maintaining a manageable complexity level through programmable adjustment rather than hardwired solutions.
Data Source
AI summary
The disclosure relates to a communication technique for convergence between an IoT technology and a 5G communication system for supporting a higher data transmission rate beyond a 4G system, and a system thereof. The disclosure may be applied to intelligence services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security and safety related services, etc.) based on a 5G communication technology and an IoT-related technology. The disclosure provides a method for transmitting uplink control information and/or uplink data by a terminal according to multiple priorities, a method for receiving uplink control information and/or uplink data by a base station according to multiple priorities, and an apparatus therefor.