CSI Report Selection for Non-Active DL BWP
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 5G communication systems face challenges in efficiently transmitting and receiving Channel State Information (CSI) reports, particularly for Downlink (DL) Bandwidth Parts (BWP) that are not actively configured.
Innovation Solution
The proposed solution involves a user equipment (UE) that receives configurations for multiple DL BWP sets, including reference signal resource sets and CSI report configurations. The UE determines which CSI reports have larger values and transmits these reports on a physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH), along with corresponding DL BWP indexes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If CSI reports are transmitted for all configured DL BWPs, then channel state information coverage is improved, but uplink signaling overhead increases
Solution Approach 1:
The patent extracts and transmits only the most relevant CSI reports by selecting those with larger CSI report quantity values, omitting redundant reports for non-active BWPs. This reduces uplink signaling overhead while maintaining essential channel state information coverage for network optimization.
2Measurement precision
If multiple CSI reports are transmitted with different BWP configurations, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by configuring different CSI report parameters specifically for active versus non-active BWPs. Each BWP type receives tailored configuration with appropriate measurement precision requirements, reducing overall UE processing complexity while maintaining necessary measurement accuracy for each specific BWP context.
3Adaptability or versatility
If CSI reporting is configured for non-active DL BWPs, then adaptability is improved, but energy consumption increases
Solution Approach 1:
The patent implements partial action by configuring CSI reporting only for non-active BWPs when specifically needed for upcoming BWP switching scenarios. Instead of continuous reporting for all BWPs, the system activates reporting selectively based on network predictions of BWP switching requirements, reducing UE energy consumption while maintaining adaptability for bandwidth part transitions.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Apparatuses and methods for channel state information (CSI) measurement and report outside an active downlink (DL) bandwidth part (BWP). A method for a user equipment includes receiving configurations for a first set of DL BWPs, for reference signal (RS) resource sets in a second set of DL BWPs, and for CSI reports corresponding to the second set of DL BWPs; receiving RS resources from the RS resource sets in a third set of DL BWPs; and determining a first number of CSI reports based on the received RS resources. The method further includes determining a second number of CSI reports that have (i) values for a CSI report quantity that are larger those in other CSI reports from the first number of CSI reports and (ii) corresponding DL BWP indexes and transmitting a channel that includes the second number of CSI reports and the indexes.