5G Reference Signal Configuration for Channel Estimation
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently processing control signals in 5G mobile communication systems, particularly in supporting enhanced services and managing the increasing complexity of connected devices.
Innovation Solution
A method for processing control signals in a wireless communication system, involving receiving a first control signal from a base station, processing it, and transmitting a second control signal based on the processing to the base station, thereby enhancing service provision and managing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reference signals are transmitted in all uplink slots, then channel estimation accuracy is improved, but uplink resource overhead increases
Solution Approach 1:
The patent implements periodic transmission of reference signals at configurable intervals (every N slots) rather than continuous transmission in all uplink slots. This periodic action maintains channel estimation capability while significantly reducing resource overhead, directly resolving the contradiction between measurement precision and quantity of resource consumption.
Solution Approach 2:
The patent introduces dynamic configurability of reference signal transmission intervals through RRC signaling, allowing the system to adapt the periodicity based on channel conditions, service requirements, and mobility states. This dynamic adjustment enables optimization between channel estimation accuracy and resource overhead in real-time.
2Productivity
If reference signal transmission is configured per BWP, then resource efficiency is improved, but system complexity increases
Solution Approach 1:
The patent creates a universal reference signal transmission mechanism that works across multiple BWPs with a single configuration framework. The same RRC configuration parameters (periodicity, offset, duration) apply universally to different BWPs, enabling resource efficiency improvements without proportionally increasing system complexity through standardized multi-BWP support.
Solution Approach 2:
The patent segments reference signal transmission configuration by BWP, allowing independent optimization of transmission parameters for each bandwidth part. This segmentation enables precise control of resource usage in different frequency regions while maintaining manageable complexity through modular configuration structures.
3Quantity of substance
If aperiodic reference signal transmission is used, then resource overhead is reduced, but channel tracking capability deteriorates
Solution Approach 1:
The patent implements dynamic switching between periodic and aperiodic reference signal transmission modes based on channel conditions, mobility state, and service requirements. This dynamic adaptability allows the system to use aperiodic transmission (reducing overhead) when channel conditions permit, while maintaining reliability by switching to periodic transmission when channel tracking becomes critical.
Solution Approach 2:
The patent incorporates feedback mechanisms where the base station monitors channel quality and can trigger periodic reference signal transmission when channel variations exceed thresholds. This feedback-driven approach ensures channel tracking capability is maintained only when necessary, optimizing the balance between resource overhead and reliability.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. An embodiment of the disclosure may include: receiving, from a base station, configuration information on a channel state information (CSI)-reference signal (RS) resource set with more than 32 antenna ports, wherein the CSI-RS resource set includes an aggregation of a plurality of CSI-RS resources as an associated CSI-RS; receiving, from the base station, downlink control channel (DCI) requesting a sounding reference signal (SRS); receiving, from the base station, the associated CSI-RS; transmitting, to the base station, the SRS based on the DCI; and transmitting, to the base station, a non-codebook based physical uplink shared channel (PUSCH) according to the SRS, wherein a number of the plurality of CSI-RS resources is one of 2, 3, or 4.