Uplink Control Information Transmission via PUSCH Merging
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Solution Overview
Problem
The 5G communication system faces challenges in providing sufficient uplink coverage and efficient channel state information reporting, especially in supporting diverse services with varying frequency and time resources, which affects transmission efficiency and latency.
Innovation Solution
A method and apparatus are proposed to optimize the uplink channel structure by transmitting synchronization signals and broadcast channels, allowing for adaptive channel estimation and resource allocation, enabling flexible scheduling and minimizing reference signal overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional uplink control channels are used in 5G systems, then coverage is limited, but transmission reliability deteriorates for cell-edge users
Solution Approach 1:
The patent transforms the uplink control information transmission from traditional PUCCH resources to PUSCH resources by incorporating it into uplink data transmissions. This dimensional change allows cell-edge users to transmit control information with higher power and better reliability through the data channel, while extending coverage to previously unreachable areas.
Solution Approach 2:
The patent merges uplink control information (UCI) with uplink data transmission on PUSCH. By combining control and data channels, the system achieves more efficient resource utilization and extends coverage by leveraging the higher power available for data transmissions compared to dedicated control channels.
2Measurement precision
If reference signals are transmitted frequently for channel estimation, then channel state information accuracy improves, but overhead increases
Solution Approach 1:
The patent implements aperiodic CSI reporting where reference signals and CSI reports are transmitted only when explicitly triggered by the network or when channel conditions change significantly. This partial action approach maintains accurate channel state information while dramatically reducing reference signal overhead compared to continuous periodic reporting.
Solution Approach 2:
The patent introduces dynamic CSI reporting mechanisms where the reporting frequency and resources are adaptively adjusted based on channel conditions, user mobility, and traffic patterns. This dynamic approach optimizes the balance between measurement precision and overhead by increasing reporting only when necessary.
3Productivity
If uplink control information is transmitted separately on PUCCH, then control reliability is maintained, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent combines uplink control information with uplink data transmission on PUSCH, merging previously separate control and data channels. This integration improves resource utilization by eliminating dedicated PUCCH resources while maintaining control reliability through the more robust data channel available to cell-edge users.
Solution Approach 2:
The PUSCH channel is designed to serve multiple functions simultaneously - carrying both uplink data and uplink control information. This multi-functionality improves resource utilization efficiency by allowing a single channel to handle diverse transmission needs without requiring separate dedicated resources for control.
4Adaptability or versatility
If scheduling flexibility is increased to support diverse services, then service adaptability improves, but system complexity increases
Solution Approach 1:
The patent employs flexible parameter configurations for PUSCH transmissions, including variable time-frequency resource allocations, different modulation and coding schemes, and adaptable power control parameters. These parameter changes enable the system to support diverse services (eMBB, URLLC, mMTC) while managing complexity through standardized physical layer procedures.
Data Source
AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present invention presents a method for efficiently estimating a physical channel and, according to the present invention, a terminal of a communication system receives a synchronization signal from a base station, receives a broadcast channel from the base station, and can estimate the broadcast channel on the basis of the synchronization signal.