AP-SRS Slot Offset Signaling for Dynamic MIMO Triggering
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Solution Overview
Problem
Existing wireless communication systems face challenges in dynamically triggering Aperiodic Sounding Reference Signal (AP-SRS) transmissions, which are essential for further enhanced Multiple-Input-Multiple-Output (MIMO) operations, leading to inefficiencies in coverage and demand management.
Innovation Solution
A user equipment (UE) and base station are configured to determine and utilize a slot offset for AP-SRS transmission, with offset information provided through Downlink Configuration Information (DCI) and/or RRC signaling, enabling precise slot allocation for AP-SRS transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dynamic triggering of AP-SRS transmission is implemented, then MIMO performance is improved, but slot allocation conflicts and coverage management become more complex
Solution Approach 1:
The base station pre-determines and signals the slot offset value to the UE through DCI or RRC signaling before the actual AP-SRS transmission occurs. This preliminary action allows the UE to proactively allocate the correct uplink slot without real-time conflicts, resolving the contradiction between dynamic triggering benefits and slot allocation complexity.
2Productivity
If slot offset is determined through DCI and RRC signaling, then AP-SRS transmission timing is optimized, but signaling overhead increases
Solution Approach 1:
The system implements dynamic slot offset signaling where the base station can adaptively select between DCI-based dynamic indication and RRC-based semi-static configuration based on current network conditions and UE capabilities. This dynamic approach optimizes signaling overhead by using more compact DCI formats when possible while maintaining the flexibility to use RRC signaling for stable configurations, thereby improving AP-SRS transmission efficiency without excessively increasing signaling overhead.
Data Source
AI summary
The present disclosure is directed to AP-SRS triggering offset enhancement for further enhanced MIMO. User equipment (UE), base stations, apparatus, methods, computer-readable memory media, and computer program products are disclosed. The UE may be configured to receive an offset information associated with AP-SRS transmission of the UE; determine a slot offset associated with the AP-SRS transmission, at least based on the offset information; determine a specific slot for the AP-SRS transmission, based on the determined slot offset; and perform the AP-SRS transmission in the determined specific slot.