UCI Multiplexing in Wireless Nodes
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Solution Overview
Problem
In wireless communication systems, particularly in the 3GPP system, there is a challenge in effectively processing multiplexing of Uplink Control Information (UCI) with varying priorities, which affects the transmission performance of high-priority UCI and can lead to interference from low-priority UCI, and potential misunderstandings in resource allocation.
Innovation Solution
A method is introduced where a first node receives an information block to determine a radio resource pool and code rate, and transmits a signal carrying two bit blocks with different types of control information bits, using a parameter value and code rate to optimize the number of physical resource blocks and bits, ensuring linear output bit sequences and minimizing low-priority UCI interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If low-priority UCI is multiplexed with high-priority UCI in the same radio resources, then resource utilization is improved, but transmission reliability of high-priority UCI deteriorates
Solution Approach 1:
The patent segments the UCI multiplexing process into separate handling for high-priority and low-priority control information. High-priority UCI is allocated dedicated resources with guaranteed transmission reliability, while low-priority UCI is multiplexed in remaining resources. This segmentation resolves the contradiction by ensuring high-priority transmission reliability while still achieving resource utilization improvement through low-priority multiplexing.
Solution Approach 2:
The patent applies different quality levels to different parts of the UCI transmission. High-priority UCI receives higher protection and dedicated resources, while low-priority UCI uses remaining resources with lower protection. This local differentiation of quality allows the system to improve overall resource utilization while maintaining high reliability for critical high-priority control information.
2Productivity
If multiple bit blocks with different control information types are jointly encoded, then coding efficiency is improved, but determination of output bit sequence length becomes complex
Solution Approach 1:
The patent performs preliminary determination of the output bit sequence length based on the number of input bits and code rate before actual encoding. By calculating the required resources in advance and informing the other party of the starting position, the system achieves joint encoding efficiency while simplifying the determination process through pre-planned resource allocation rather than complex real-time calculations.
Solution Approach 2:
The patent uses parameters such as code rate and number of bits to determine the output bit sequence length through a standardized relationship. By establishing a clear parameter-based determination method, the patent achieves coding efficiency through joint encoding while reducing complexity through systematic parameter usage rather than ad-hoc calculations.
3Adaptability or versatility
If radio resources are dynamically allocated based on UCI bit size and code rate, then resource allocation flexibility is improved, but risk of misunderstanding in resource allocation increases
Solution Approach 1:
The patent implements feedback by informing the other party of the starting position of the bit sequence and the resources occupied by the signal. This feedback mechanism ensures that dynamic resource allocation based on bit size and code rate is accurately understood by both parties, resolving the contradiction between allocation flexibility and understanding accuracy through clear communication of resource usage.
Data Source
AI summary
Present disclosure provides a method and a device in nodes for wireless communication. A first receiver receives a first information block, the first information block being used to determine a first radio resource pool and a first code rate, where the first code rate is a non-negative number; and a first transmitter transmits a first signal, the first signal being used to carry a first bit block and a second bit block, the first bit block including at least one control information bit, the second bit block including at least one control information bit; herein, a radio resource occupied by the first signal belongs to the first radio resource pool, a number of PRBs occupied by the first signal in frequency domain is equal to a first number, the first number being no greater than a number of PRBs included by the first radio resource pool in frequency domain.