PCC/SCC Prioritization Using Neural Network Path Estimation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In high-frequency wireless communication systems, such as those operating in the mmWave/THz frequency band, channel state information (CSI) is difficult to obtain due to extreme fading effects and short channel coherence time, making carrier aggregation and primary/secondary cell carrier configuration challenging, especially with user mobility.
Innovation Solution
A method and apparatus that utilize a neural network to estimate the number of multi-paths based on partial CSI, reshape and extract singular values from received signals, and apply rank minimization and compressed sensing techniques to improve CSI prediction and configure primary/secondary cell carrier prioritization maps efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation is configured in high-frequency environments, then communication capacity is improved, but channel state information accuracy deteriorates due to extreme fading effects
Solution Approach 1:
The system performs preliminary channel estimation using reference signals (CRS, CSI-RS, or SRS) before actual data transmission. By pre-establishing channel state information through these reference signals, the system prepares for carrier aggregation configuration even though the channel conditions are highly variable. This preliminary action allows the network to anticipate channel quality and make informed decisions about carrier aggregation setup despite the inherent measurement difficulties in high-frequency environments.
Solution Approach 2:
Reference signals (CRS, CSI-RS, SRS) serve as intermediaries between the transmitter and receiver to convey channel state information. These specially designed reference signals penetrate through the extreme fading effects better than data signals, providing a reliable intermediary mechanism for estimating channel conditions. The base station uses these intermediary reference signals to derive channel quality indicators that then guide the carrier aggregation configuration decisions.
2Manufacturing precision
If PCC/SCC prioritization is configured based on full channel information, then configuration accuracy is improved, but information collection time increases due to short channel coherence time
Solution Approach 1:
The system uses partial channel information from reference signals rather than attempting to collect complete channel state information across all carriers and time instances. By using only the essential reference signal measurements (CRS, CSI-RS, or SRS) needed for prioritization decisions, the system achieves sufficient configuration accuracy without the time penalty of exhaustive channel probing. This partial information approach is adequate because carrier aggregation prioritization doesn't require perfectly precise channel knowledge, only relative quality comparisons.
Solution Approach 2:
The base station collects channel information through reference signals that are transmitted periodically in advance of the actual carrier aggregation configuration decision. This preliminary collection of channel state information through pre-scheduled reference signals allows the system to have channel quality estimates ready before prioritization is needed, eliminating the need for time-consuming on-demand channel measurements at the moment of configuration decisions.
3Measurement precision
If channel measurements are performed frequently to track mobility, then mobility tracking accuracy is improved, but system overhead increases
Solution Approach 1:
The reference signals (CRS, CSI-RS, SRS) are designed to serve multiple functions simultaneously: they enable channel estimation for carrier aggregation prioritization, provide mobility tracking information, and support channel quality indicator reporting. By making these reference signals multi-functional, the system achieves accurate mobility tracking without requiring separate dedicated measurement signals, thereby reducing overall system overhead while maintaining measurement precision.
Data Source
AI summary
Disclosed is a wireless communication system, specifically, an apparatus and method for configuring a primary cell carrier/secondary cell carrier (PCC/SCC) prioritization only based on extremely partial channel state information in a wireless communication system. Specifically, a method of operating a user equipment (UE) in a wireless communication system includes: transmitting a sounding reference signal (SRS) or channel state information (CSI) to a base station; receiving a signal from the base station on the basis of the SRS or the CSI; and estimating a number of multi-paths using a neural network for the received signal, wherein the estimating of the number of multi-paths includes: re-shaping the received signal; extracting a singular value of the reshaped signal; and estimating the number of multi-paths based on the extracted singular value.