Adaptive CSI Processing Time Window for CoMP Feedback
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently determining channel state information (CSI) for CoMP (Coordinated Multipoint) transmission, particularly when dealing with large CoMP measurement sets and multiple CSI processes, which increases the peak processing requirements for user equipment (UE) and can lead to implementation costs and reduced performance.
Innovation Solution
Introducing a flexible CSI processing time window that adjusts based on the number of configured CSI processes, allowing the CSI reference resource to be determined dynamically, thereby reducing peak processing requirements and enabling efficient CSI reporting even in complex CoMP configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the system supports large CoMP measurement sets and multiple CSI processes, then the CSI feedback capability and system performance are improved, but the peak processing requirements for user equipment increase
Solution Approach 1:
The patent applies dynamics by making the CSI processing time window flexible and adaptive rather than fixed. The processing time window is dynamically adjusted based on the number of configured CSI processes and the size of the CoMP measurement set, allowing the system to adapt processing requirements to the actual configuration rather than preparing for maximum complexity in all cases.
Solution Approach 2:
The patent changes the parameter of processing time window duration based on configuration parameters. By linking the processing time window to the number of CSI processes and measurement set size, the system transforms a static parameter into one that varies with system configuration, reducing peak processing requirements for smaller configurations while maintaining capability for larger ones.
2Productivity
If the CSI reference resource is determined based on the number of configured CSI processes, then the processing time window is optimized, but the system requires more complex determination logic
Solution Approach 1:
The patent uses parameter changes by establishing a direct relationship between the CSI reference resource determination and the number of configured CSI processes. This creates a systematic method where the reference resource is selected based on configurable parameters rather than complex algorithms, optimizing processing efficiency through parameter-based control.
Solution Approach 2:
The patent applies preliminary action by determining the CSI reference resource in advance based on the number of configured CSI processes. This pre-determination approach allows the system to prepare the reference resource selection before actual CSI processing is needed, reducing real-time processing complexity while maintaining optimization.
Data Source
AI summary
A method in a wireless device for reporting Channel State Information (CSI). The wireless device is comprised in a wireless communications system. The method includes receiving a CSI process configuration and a request for CSI information from a network node. The method further includes reporting CSI for one or more CSI processes. The CSI reflects the state of the channel for a CSI reference resource. According to the method, the CSI reference resource is determined based on the number of configured CSI processes. Related devices are also disclosed.