CSI-RS Frequency Allocation Alignment for Wireless Reliability
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in frequency allocation for channel state information reference signals (CSI-RSs), leading to incomplete information for base stations, which can result in suboptimal resource allocation and increased errors in communication.
Innovation Solution
The method involves a UE and a base station exchanging indications of frequency allocations for dynamic resource grants, SPS activations, or CORESET configurations, allowing the configuration of CSI-RSs based on these allocations, ensuring that only supported frequencies are used for CSI-RS transmission and measurement, thereby reducing computational and network resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency allocation for CSI-RS is not properly aligned with dynamic resource grants, SPS activations, or CORESET configurations, then computational and network resources are wasted, but CSI completeness and communication reliability deteriorate
Solution Approach 1:
The base station performs preliminary actions by determining the frequency allocation for CSI-RS before actual transmission, ensuring it aligns with dynamic resource grants, SPS activations, or CORESET configurations. This preliminary determination prevents resource waste and ensures complete CSI acquisition, resolving the contradiction between communication reliability and resource efficiency
Solution Approach 2:
The invention changes the frequency allocation parameter of CSI-RS to match the parameters of dynamic resource grants, SPS activations, or CORESET configurations. By adjusting this parameter, the system ensures that CSI-RS is transmitted only on frequencies that are actually used for data communication, thereby improving reliability without wasting computational and network resources
2Loss of information
If CSI-RS is transmitted on all frequency bands, then complete channel state information is obtained, but computational and network resource usage increases
Solution Approach 1:
The invention extracts only the necessary CSI-RS transmissions by identifying and removing redundant frequency allocations. Instead of transmitting CSI-RS on all frequency bands, the system extracts and transmits CSI-RS only on the specific frequency bands allocated for dynamic resource grants, SPS activations, or CORESET configurations, thereby maintaining CSI completeness while reducing resource consumption
Solution Approach 2:
The system applies partial action by transmitting CSI-RS on a subset of frequency bands rather than all bands. This partial transmission is sufficient to obtain complete CSI information needed for communication, avoiding the excessive resource consumption that would result from full-band CSI-RS transmission
Data Source
AI summary
A user equipment (UE) may receive an indication of a frequency allocation of at least one of a dynamic resource grant, a semi-persistent scheduling (SPS) activation message or assignment, or a control resource set (CORESET) configuration for one or more communications with a base station. The UE may receive a set of channel state information reference signals having a configuration that is based at least in part on the frequency allocation of the at least one of the dynamic resource grant, the SPS activation message or assignment, or the CORESET configuration.