Uplink Control Signaling via Synchronization-Based Channel Estimation
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Solution Overview
Problem
The 5G communication system faces challenges in providing sufficient uplink coverage and efficient channel estimation for various services, particularly due to reduced coverage in ultra-high frequency bands and the need for flexible scheduling and resource utilization.
Innovation Solution
A method and apparatus are proposed to enhance uplink coverage by using synchronization signals for channel estimation and adapting antenna ports, allowing for flexible resource allocation and minimizing reference signal overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If ultra-high frequency bands are used for 5G communication, then data rates are improved, but uplink coverage is reduced
Solution Approach 1:
The patent uses synchronization signals as an intermediary resource for channel estimation. By repurposing existing synchronization signals to serve dual functions (synchronization and channel estimation), the system achieves reliable uplink communication in ultra-high frequency bands without requiring additional dedicated reference signals, thus maintaining coverage while enabling high data rates.
Solution Approach 2:
The patent makes synchronization signals multi-functional by using them for both their original synchronization purpose and for channel estimation. This universal usage of synchronization signals allows the system to maintain uplink coverage in ultra-high frequency bands while supporting high data rate transmissions, resolving the contradiction between speed and reliability.
2Measurement precision
If dedicated reference signals are added for channel estimation, then channel estimation accuracy is improved, but reference signal overhead increases
Solution Approach 1:
The patent makes synchronization signals multi-functional by using them for both their original synchronization purpose and for channel estimation. This universal usage of synchronization signals allows the system to maintain uplink coverage in ultra-high frequency bands while supporting high data rate transmissions, resolving the contradiction between speed and reliability.
Solution Approach 2:
The patent merges the function of synchronization signals with channel estimation functionality. By combining these two functions into a single signal structure, the system achieves accurate channel estimation without increasing reference signal overhead, as the same synchronization signals serve dual purposes.
3Adaptability or versatility
If flexible scheduling is implemented for different services, then service adaptability is improved, but system complexity increases
Solution Approach 1:
The patent applies different uplink channel structures tailored to specific service requirements. By optimizing channel structures locally for different service types (e.g., enhanced coverage for IoT, high throughput for eMBB), the system achieves service adaptability without requiring complete redesign of the entire scheduling system, thus managing complexity effectively.
Solution Approach 2:
The patent segments the uplink channel structure into different configurations suitable for different service types. This segmentation allows flexible scheduling by enabling the system to select appropriate channel structures for different services, achieving adaptability while keeping individual service configurations manageable and not overly complex.
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.