Small Data Transmission Feedback for RRC Inactive SDT Failures
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Solution Overview
Problem
Existing small data transmission (SDT) operations in RRC_INACTIVE state of wireless networks face inefficiencies due to sub-optimal configuration parameters, leading to increased power consumption, signaling overhead, and latency, particularly in scenarios where UEs fail to meet RSRP thresholds or encounter coverage issues, resulting in unnecessary RACH procedures.
Innovation Solution
User Equipment (UE) logs and reports information related to SDT procedures, including data volume, RSRP values, resource allocation, and failure reasons, enabling network nodes to optimize SDT configurations such as data volume thresholds, RSRP settings, and resource allocation to improve successful SDT operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE performs RACH procedure for SDT when RSRP threshold is not met, then data transmission can be attempted, but power consumption increases and latency increases
Solution Approach 1:
The patent implements feedback mechanisms where the network node receives reports from UE about SDT procedure outcomes and RSRP measurements. This feedback enables the network to adjust SDT configuration parameters dynamically, preventing UE from attempting RACH when RSRP threshold is not met, thereby reducing unnecessary power consumption while maintaining reliable SDT operations when conditions are favorable.
Solution Approach 2:
The patent employs dynamic adjustment of configuration parameters including data volume thresholds, RSRP thresholds, and resource allocation settings. By changing these parameters based on network conditions and UE reports, the system optimizes the balance between attempting SDT transmissions and avoiding unnecessary RACH procedures, thus reducing power consumption without compromising reliability.
2Reliability
If UE performs RACH procedure for SDT when coverage issues occur, then data transmission can be attempted, but signaling overhead increases and latency increases
Solution Approach 1:
The network node utilizes feedback information from UE reports about coverage conditions and RACH procedure outcomes to dynamically adjust SDT configuration. This enables the network to identify when coverage issues prevent successful SDT operations and avoid initiating RACH procedures in such conditions, thereby reducing latency and signaling overhead while maintaining reliable data transmission when coverage is adequate.
Solution Approach 2:
The system performs preliminary assessment of coverage conditions and RSRP thresholds before initiating SDT procedures. By evaluating these parameters in advance based on UE reports and network conditions, the system can prevent unnecessary RACH procedures in poor coverage areas, reducing latency and signaling overhead while ensuring reliable SDT operations only when coverage conditions are favorable.
3Ease of manufacture
If network uses fixed SDT configuration parameters, then implementation is simple, but network resource utilization is sub-optimal
Solution Approach 1:
The patent transforms fixed configuration parameters into dynamic settings that can be adjusted based on real-time network conditions and UE reports. The network node continuously monitors SDT procedure outcomes, RSRP measurements, and coverage conditions, then adapts configuration parameters accordingly. This dynamic approach maintains implementation simplicity while significantly improving network resource utilization by optimizing SDT operations for each specific scenario.
Solution Approach 2:
The system implements parameter changes in configuration settings such as data volume thresholds, RSRP thresholds, and resource allocation patterns. These parameters are adjusted based on network conditions and UE performance reports, enabling the network to optimize resource utilization for SDT operations while maintaining manageable implementation complexity through structured parameter management.
4Productivity
If network performs detailed monitoring of SDT procedures, then optimization opportunities are identified, but device complexity increases
Solution Approach 1:
The patent extracts key monitoring functions to the network node, which receives and processes reports from UE about SDT procedure outcomes and RSRP measurements. This extraction approach allows detailed monitoring and optimization without significantly increasing UE complexity. The network node performs the analysis of monitoring data, identifies optimization opportunities, and adjusts configurations accordingly, maintaining a balance between monitoring depth and device complexity.
Data Source
AI summary
A method is performed by a user equipment. The method comprises logging information related to a small-data transmissions procedure performed by the user equipment in a report. The method further comprises transmitting the report to a network node.