Uplink Control Information Bit Overhead Reduction in 5G
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G and New Radio systems, the mismatch between the number of bits of Uplink Control Information (UCI) determined by high-level parameters and the actual scheduled bits leads to unnecessary bit overhead, affecting transmission efficiency.
Innovation Solution
A method where terminal and network devices determine UCI transmission based on the channel format corresponding to the uplink control channel resource, ensuring the number of bits for actual transmission is less than or equal to the high-level parameters, thereby avoiding unnecessary bit overhead and improving transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of bits of UCI is determined according to high-level parameters, then the UCI transmission can be configured, but unnecessary bit overhead occurs when it does not match the actually scheduled bits
Solution Approach 1:
The patent applies dynamics by making the UCI bit determination adaptive rather than static. The terminal device dynamically adjusts the actual number of UCI bits based on the determined channel format, which itself is selected based on both high-level parameters and actual scheduling conditions. This dynamic adaptation eliminates the mismatch between configured and actual bit requirements, resolving the contradiction between having a configured number of bits and avoiding unnecessary overhead.
Solution Approach 2:
The patent changes the parameter of UCI bit length from a fixed value determined solely by high-level parameters to a flexible parameter that adapts to actual scheduling conditions. By introducing channel format determination that considers both high-level parameters and actual scheduling, the system can adjust the effective number of UCI bits to match actual needs, thereby reducing unnecessary bit overhead while maintaining proper configuration.
2Stability of the object's composition
If the number of bits of UCI determined according to high-level parameters does not match the actually scheduled bits, then configuration can be maintained, but transmission efficiency is affected
Solution Approach 1:
The patent resolves this contradiction by introducing a dynamic channel format determination mechanism that bridges the gap between stable high-level configuration and variable actual scheduling requirements. The terminal device determines the channel format based on both the stable high-level parameters and the variable actual scheduling conditions, allowing the system to maintain configuration stability while adapting transmission efficiency to actual needs.
Solution Approach 2:
The patent changes the effective UCI bit parameter from being solely configuration-driven to being jointly determined by configuration and actual scheduling. This parameter change allows the system to maintain the stability of high-level configuration while improving transmission efficiency by adjusting the actual number of bits to match scheduled requirements, thus resolving the contradiction between configuration stability and transmission efficiency.
Data Source
AI summary
Disclosed is a method for transmitting Uplink Control Information. The method includes: determining, by a terminal device, a set of uplink control channel resources according to the first number of bits, the first number of bits being determined according to high-level parameters; receiving configuration information sent by a network device, the configuration information indicating an uplink control channel resource in the set of uplink control channel resources; determining first UCI to be transmitted according to a channel format corresponding to the uplink control channel resource, the number of bits occupied by the first UCI being less than or equal to the first number of bits; and transmitting the first UCI in the uplink control channel resource using the channel format. Therefore, the terminal device determines the UCI to be transmitted based on the channel format corresponding to the uplink control channel resource.