UE-Triggered CSI Reporting with Pre-Notification Uplink Scheduling
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently transmitting User Equipment (UE) triggered reports, particularly in evolving networks like 5G, due to complexities in Channel State Information (CSI) reporting configurations and resource management.
Innovation Solution
A method is introduced where a UE receives multiple CSI report configurations associated with specific events and resources, generating a UE-initiated report when a condition is met, transmitting a Pre-Notification (PN) on a first UL resource and the actual report on a second UL resource, optimizing the reporting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple CSI report configurations are associated with the same UL resource, then resource utilization is improved, but resource management complexity increases
Solution Approach 1:
The patent segments the UL resource configuration by associating different CSI report configurations with different UL resources or resource IDs. When multiple CSI report configurations need to be transmitted, the UE can select appropriate UL resources based on the specific report configuration, thereby reducing resource management complexity while maintaining efficient resource utilization.
Solution Approach 2:
The network pre-configures multiple UL resources and resource IDs for different CSI report configurations before the actual reporting occurs. This preliminary configuration allows the UE to quickly select the appropriate UL resource when a CSI report is triggered, avoiding complex real-time resource management decisions and reducing signaling overhead.
2Speed
If UE transmits report directly on UL resource, then transmission speed is improved, but reliability decreases due to potential resource conflicts
Solution Approach 1:
The UE transmits a Pre-Notification (PN) before the actual CSI report to indicate the intent to transmit. This preliminary notification allows the network to prepare and allocate the appropriate UL resource, ensuring that the subsequent report transmission occurs on a conflict-free resource. This approach maintains fast transmission while improving reliability through advance resource reservation.
Solution Approach 2:
The Pre-Notification acts as an intermediary between the UE's reporting intent and the actual report transmission. By sending the PN first, the UE enables the network to mediate resource allocation, resolving potential resource conflicts before the actual report is transmitted, thus ensuring both speed and reliability.
3Reliability
If separate UL resources are allocated for PN and report, then transmission reliability is improved, but resource overhead increases
Solution Approach 1:
The patent configures UL resources such that the same UL resource can serve multiple purposes: it can be used for both Pre-Notification and CSI report transmission depending on the configuration. The network configures parameters including whether a UL resource is for PN only, report only, or both. This multi-functionality reduces resource overhead while maintaining reliability by allowing flexible resource allocation based on actual needs.
Solution Approach 2:
The UL resource configuration is dynamic and flexible. The network can configure different UL resources for PN and report based on traffic conditions, and the same UL resource can be dynamically allocated for different purposes (PN or report) as needed. This dynamic allocation reduces resource overhead while ensuring reliable transmission when required.
Data Source
AI summary
Methods, systems, and apparatuses are provided for transmitting User Equipment (UE) triggered reports in a wireless communication system, wherein a method of a UE comprises receiving a plurality of Channel State Information (CSI) report configurations associated with a UE-initiated report, generating a first UE-initiated report if a condition of a first event is satisfied, transmitting a Pre-Notification (PN) on a first Uplink (UL) resource, and transmitting the first UE-initiated report on a second UL resource.