CSI Processing Criteria for BWP Change Handling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication networks, such as 5G NR, the existing CSI processing criteria may prevent user equipment (UE) from performing CSI calculations due to not considering an active bandwidth part (BWP) change, even though processing resources are available.
Innovation Solution
The proposed solution involves a method where the UE receives control signaling triggering CSI reports across different BWPs and determines the occupation time of CSI processing units based on an indication of an active downlink BWP change, allowing for appropriate CPU allocation and CSI reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE follows existing CSI processing criteria that do not consider active BWP change, then the processing criteria are simple and easy to implement, but the UE cannot perform CSI calculations even when processing resources are available
Solution Approach 1:
The patent introduces dynamic adjustment of CSI processing behavior based on BWP change status. The UE dynamically determines whether to perform CSI calculations by checking if a BWP change indication is received between the CSI trigger and the scheduled CSI report time, allowing the system to adapt processing behavior to current operational conditions rather than following static rules
Solution Approach 2:
The patent applies preliminary action by having the UE determine the occupation time of CSI processing units in advance based on the BWP change indication. The UE calculates whether CPUs will be occupied during the CSI report period and uses this information to decide whether to perform CSI calculations, preventing wasted processing resource allocation before the actual calculation would occur
2Productivity
If the UE determines CPU occupation time based on active BWP change indication, then processing resource allocation becomes efficient and accurate, but the processing complexity increases
Solution Approach 1:
The patent implements self-service by having the UE autonomously determine its own CPU occupation status based on received BWP change indications. The UE independently calculates whether its CSI processing units will be occupied during the report period and makes scheduling decisions without requiring external coordination or complex network-side control mechanisms
Solution Approach 2:
The patent uses the BWP change indication as an intermediary signal that mediates between the network's scheduling decisions and the UE's CSI processing behavior. This indication serves as a bridge that allows the UE to infer CPU occupation status and adjust its processing accordingly, simplifying the overall control mechanism while achieving efficient resource allocation
3Loss of information
If the UE performs CSI calculations for non-active BWP, then more comprehensive channel state information is obtained, but unnecessary processing overhead is incurred
Solution Approach 1:
The patent applies local quality by making CSI calculation decisions specific to each BWP's active status. Instead of uniformly performing or skipping CSI calculations across all BWPs, the UE selectively performs calculations only for BWPs that are currently active, ensuring that processing effort is applied where it is actually needed rather than uniformly across all configured BWPs
Data Source
AI summary
Some aspects of the present disclosure provide channel state information (CSI) processing criteria. A method that may be performed by a user equipment (UE) generally includes receiving, from a base station via a first bandwidth part (BWP), control signaling that triggers reporting at least one of a first channel state information (CSI) report associated with the first BWP or a second CSI report associated with a second BWP that is non-active, determining, based on an indication of an active downlink (DL) BWP change, at least one occupation time of one or more CSI processing units (CPUs) associated with the first CSI report or the second CSI report, and taking one or more actions based at least in part on the at least one occupation time.