Multi-Part CSI Reporting for Low-Latency High-Frequency Links
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Solution Overview
Problem
Conventional CSI reporting procedures fail to meet the requirements for high-frequency wireless communication systems, particularly beyond 52.6 GHz, and industrial internet of things (IIoT) and ultra-reliable low-latency communication (URLLC) services, necessitating improved CSI processing and reporting methods.
Innovation Solution
The proposed solution involves dividing CSI reports into multiple parts for multiplexing on transmission occasions, utilizing a transceiver and processor to manage CSI processing units efficiently, and adapting CSI processing timelines for higher frequencies to reduce latency and enhance accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional CSI reporting procedures are used, then device complexity is reduced, but measurement precision and reliability are insufficient for high-frequency communications beyond 52.6 GHz
Solution Approach 1:
The CSI report is divided into multiple parts (first part and second part) that are transmitted separately on different PUSCH occasions. This segmentation allows the system to handle large-volume CSI reports for high-frequency communications by breaking them into manageable chunks, improving measurement precision without overwhelming the device processing capability.
2Loss of time
If CSI reports are transmitted as single units, then device complexity is reduced, but reporting latency increases and cannot meet URLLC requirements
Solution Approach 1:
The CSI report is segmented into multiple parts transmitted on separate PUSCH occasions, enabling parallel processing and reducing overall reporting latency. This satisfies URLLC requirements by allowing the network to receive critical CSI information faster through the first part, while the second part completes the remaining data transmission.
3Measurement precision
If CSI processing is optimized for high-frequency operations, then measurement precision improves, but processing time and device complexity increase
Solution Approach 1:
The network configures multiple PUSCH occasions in advance for CSI part transmission. This preliminary setup allows the UE to process and transmit CSI parts as they become ready without waiting for complete processing, reducing overall processing time while maintaining the precision required for high-frequency operations.
4Productivity
If multi-part CSI reporting is implemented, then productivity and reliability improve for IIoT and URLLC, but device complexity and operational complexity increase
Solution Approach 1:
The multi-part CSI reporting mechanism is designed to work with existing PUSCH transmission frameworks and network configuration procedures. By reusing established protocols and adding the capability to split reports into parts, the system improves productivity for IIoT and URLLC without requiring completely new operational procedures, thus limiting the increase in operational complexity.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for channel state information processing and reporting. One method (700) includes receiving (705), at a user equipment (“UE”) device, a configuration from a mobile wireless network to report channel state information (“CSI”). The method (700) includes receiving (710) at least one grant to schedule a plurality of transmission occasions from the UE device. The method (700) includes, in response to the received configuration and grant, dividing (715) a CSI report into a plurality of parts for multiplexing, each of the plurality of parts configured to be transmitted on a transmission occasion of the plurality of transmission occasions and transmit (720) each of the plurality of parts of the CSI report on a corresponding transmission occasion of the plurality of transmission occasions.