UCI Transmission via Dynamic Beta Offset Adjustment
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G, face challenges in efficiently transmitting Uplink Control Information (UCI) piggybacked onto Physical Uplink Shared Channels (PUSCH) due to differing performance demands between UCI and PUSCH, which affects reliability and timeliness, especially for Ultra Reliable and Low Latency Communication (URLLC) traffic.
Innovation Solution
The method involves dynamically adjusting the Beta_Offset parameter to optimize the code rate of UCI based on specific conditions, allowing for enhanced UCI transmission performance and spectrum efficiency by selecting appropriate Modulation and Coding Schemes (MCS) and time-frequency resource allocation, without increasing the number of bits in Downlink Control Information (DCI).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If UCI is piggybacked onto PUSCH with a fixed Beta_Offset parameter, then the implementation is simple, but the transmission performance cannot adapt to different performance demands of UCI and PUSCH
Solution Approach 1:
The patent applies dynamics by making the Beta_Offset parameter configurable through RRC signaling instead of fixed. The base station can dynamically select from multiple Beta_Offset values (e.g., betaOffsetACK-Index1, betaOffsetACK-Index2, betaOffsetCSI-Part1-Index1, betaOffsetCSI-Part1-Index2) based on the specific transmission scenario, allowing the system to adapt UCI transmission performance to different performance demands while maintaining implementation simplicity through pre-configured parameter sets.
2Reliability
If multiple Beta_Offset values are configured to adapt to different scenarios, then the transmission performance is improved, but the signaling overhead increases
Solution Approach 1:
The patent changes the parameter configuration approach by introducing multiple Beta_Offset values that can be selected based on different scenarios. Instead of using a single fixed parameter or complex dynamic signaling, the system pre-configures multiple parameter values and selects appropriate ones through efficient RRC signaling, thereby adapting transmission performance to different scenarios while controlling signaling overhead.
3Reliability
If the code rate of UCI is increased to ensure reliability, then the transmission reliability is improved, but the spectrum efficiency deteriorates
Solution Approach 1:
The patent applies parameter changes by configuring multiple Beta_Offset values that represent different code rate adjustments. The base station can select appropriate Beta_Offset values based on the specific scenario - using higher Beta_Offset values (increasing code rate) when reliability is critical, and lower Beta_Offset values (maintaining lower code rates) when spectrum efficiency is more important, thereby dynamically balancing reliability and spectrum efficiency.
Data Source
AI summary
The present disclosure discloses a method and device for use in wireless communication nodes. A first node firstly receives a first signaling and then transmits a first radio signal and first information in a first time-frequency resource set; the first signaling is used to determine the first time-frequency resource set, and the first signaling comprises a first field, the first field being used to determine a first parameter set out of K1 parameter sets, the first parameter set comprising K2 first-type parameters, at least one of the K2 first-type parameters is used to determine a first integer, and a number of REs occupied by the first information in the first time-frequency resource set is equal to the first integer; the K1 parameter sets are related to a first condition set. The present disclosure helps improve UCI transmission performance, thus avoiding excessive uplink data resources occupied by UCI.