UE Aperiodic CSI Process Dropping for CoMP Load Management
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Solution Overview
Problem
After the introduction of CoMP technology, user equipment (UE) faces challenges in processing multiple channel-state information (CSI) processes due to limitations in aperiodic CSI reporting, leading to incomplete processing of CSI configured by the base station.
Innovation Solution
A method where the UE drops a part of aperiodic CSI processes when multiple processes are triggered, using predefined thresholds or processing capabilities to manage the number of reported CSI processes, allowing for prioritization or replacement of dropped CSI with previous measurement results or preset sequences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple aperiodic CSI processes are configured for one UE on one carrier, then the system can support CoMP technology and improve communication performance, but the UE cannot complete processing all configured CSI processes due to processing capability limitations
Solution Approach 1:
The patent applies partial action by having the UE drop some CSI processes when the number of configured processes exceeds the UE's processing capability. The UE processes only a subset of CSI processes (partial action) rather than all configured processes, thereby managing processing load while still providing useful feedback for communication optimization.
2Loss of information
If the UE processes all configured CSI processes, then complete channel-state information is obtained, but the processing time and computational load exceed the UE's capability limits
Solution Approach 1:
The patent implements partial action by limiting the number of CSI processes the UE processes to match its processing capability. When multiple CSI processes are configured, the UE selectively processes only the necessary number (e.g., up to a threshold like 2 processes) and drops the rest, thereby avoiding time overrun while still obtaining sufficient channel-state information for effective communication.
3Loss of information
If the UE reports all aperiodic CSI processes, then comprehensive feedback is provided to the network, but the reporting mechanism cannot handle the volume of data within the allocated time
Solution Approach 1:
The patent applies partial action to CSI reporting by having the UE report only a subset of CSI processes that it has successfully processed. When the number of configured CSI processes exceeds processing capability, the UE reports only the processed subset (partial feedback) rather than attempting to report all processes, thereby maintaining reporting efficiency and avoiding time violations while still providing useful feedback to the network.
Data Source
AI summary
Embodiments of the present invention provide a channel-state information process processing method, a network device, and a user equipment, where the channel-state information process processing method includes: after receiving a first channel-state information CSI request sent by a first network device, if CSI corresponding to multiple aperiodic CSI processes has not been reported by a user equipment, dropping CSI corresponding to a part of aperiodic CSI processes among the multiple aperiodic CSI processes, where each CSI process is associated with a channel measurement resource and an interference measurement resource. A problem existing after a CoMP technology is introduced can be solved that the UE cannot implement processing of multiple CSI processes.