Priority UCI Encoding for Shared Physical Uplink Channels
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Solution Overview
Problem
Existing 5G communication systems face challenges in efficiently transmitting and receiving control information, particularly when high-priority and low-priority uplink control information (UCI) share the same physical channel, leading to degraded performance of high-priority services due to prioritization of low-priority data.
Innovation Solution
A method is provided for separately encoding first and second priority UCI based on their respective bit numbers and transmitting them on the same physical uplink channel, allowing for efficient coexistence and optimized transmission of both types of control information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-priority and low-priority UCI are transmitted together on the same physical channel, then channel resource utilization is improved, but the performance of high-priority services deteriorates due to prioritization of low-priority data
Solution Approach 1:
The patent divides the UCI transmission process into separate encoding stages for different priority levels. High-priority UCI and low-priority UCI are encoded separately using different coding schemes, allowing the system to maintain both high channel utilization and high-priority service performance by preventing low-priority data from interfering with high-priority transmission
2Reliability
If separate encoding is applied to first priority and second priority UCI, then transmission reliability of high-priority services is improved, but device complexity increases
Solution Approach 1:
The patent applies different encoding qualities to different priority levels of UCI. High-priority UCI receives more robust encoding treatment while low-priority UCI uses simpler encoding, optimizing the balance between reliability and complexity by tailoring the encoding strategy to the specific requirements of each priority level
Data Source
AI summary
A method and apparatus are provided for transmitting and receiving control information. A method performed by a UE includes receiving, from a base station, DCI or a higher layer signaling; when first priority UCI and second priority UCI are transmitted in a same physical uplink channel, separately encoding the first priority UCI and the second priority UCI, based on a first number of bits of the first priority UCI and a second number of bits of the second priority UCI; and transmitting, based on the DCI or the higher layer signaling, the encoded first priority UCI and the second priority UCI, to the base station, on the same physical uplink channel.