PUCCH Resource Allocation for Priority UCI Multiplexing
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Solution Overview
Problem
In 5G wireless communication systems, particularly in NR URLLC scenarios, effectively multiplexing UCI feedbacks of different priorities on a shared PUCCH channel remains a challenge due to their varying properties, affecting system efficiency and reliability.
Innovation Solution
A method where the number of bits in low-priority UCI on a PUCCH is restricted, with the number of bits in high-priority UCI and low-priority UCI jointly determining the selection of PUCCH resource sets, ensuring high-priority UCI transmission reliability by allocating more resources to it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UCI feedbacks of different priorities are multiplexed on the same PUCCH channel, then system efficiency is enhanced, but the reliability of high-priority UCI transmission is compromised due to resource sharing
Solution Approach 1:
The patent applies local quality by differentiating resource allocation based on UCI priority levels. High-priority UCI is allocated a protected resource set with guaranteed resources, while low-priority UCI uses a separate resource set. This ensures that high-priority transmissions maintain reliability even when multiplexing occurs, as their dedicated resources are not subject to the same contention and interference as shared resources.
Solution Approach 2:
The patent segments the PUCCH resources into distinct resource sets based on UCI priority. By dividing the available resources into high-priority and low-priority sets, the system enables multiplexing while protecting high-priority transmissions. The segmentation allows low-priority UCI to utilize resources without interfering with the guaranteed resources allocated to high-priority UCI, thus maintaining both efficiency and reliability.
2Reliability
If more resources are allocated to high-priority UCI, then transmission reliability is improved, but the quantity of resources available for low-priority UCI is reduced
Solution Approach 1:
The patent implements multi-functionality by designing the PUCCH resource allocation system to serve multiple priority levels simultaneously. The high-priority resource set provides guaranteed resources for critical transmissions, while the low-priority resource set utilizes remaining resources. This universal resource management approach allows the system to maintain high reliability for priority transmissions while still providing resource access to lower-priority UCI, effectively addressing both requirements.
Data Source
AI summary
The present disclosure provides a method and a device in a node for wireless communications. A first receiver, which receives a first signaling; receives a first signal; receives a second signaling; and a second signal; a first transmitter, which transmits a first bit block set in a target time-frequency resource group; herein, the first signaling indicates scheduling information of the first signal, while the second signaling indicates scheduling information of the second signal; the first bit block set comprises a first bit block and a third bit block, the first bit block comprises information (bit(s)) indicating whether the first signal is correctly received, a second bit block comprises information (bit(s)) indicating whether the second signal is correctly received; a sum of size of the first bit block and a first value is used together with the first signaling to determine the target time-frequency resource group.