Uplink Data Volume Threshold Control for Small Data Transmission
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Solution Overview
Problem
Current wireless communication systems face challenges in managing uplink data transmission during small data transmission procedures in an inactive state, where the amount of data exceeds predetermined limits, leading to inefficiencies and potential misuse of resources.
Innovation Solution
An apparatus and method that receive information from a wireless network regarding data transmission limits during small data transmission procedures, determining whether the amount of uplink data exceeds these limits, and taking appropriate actions such as aborting the transmission, requesting a radio resource control state transition, or continuing the transmission with permission from the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If small data transmission is allowed in inactive state without strict limit enforcement, then transmission efficiency is improved and signaling overhead is reduced, but resource misuse and network congestion may occur
Solution Approach 1:
The network configures transmission limits (dataVolumeThreshold, sd-DataThreshold, sd-TotalDataThreshold) in advance before small data transmission occurs. The UE checks these limits before initiating transmission and monitors during transmission, preventing resource misuse before it happens while allowing efficient transmission within limits.
Solution Approach 2:
The system implements continuous feedback mechanisms where the UE monitors uplink data amount during small data transmission and compares it against configured limits. When limits are approached or exceeded, the UE receives network responses (RRC Release, RRC Resume) that provide feedback to adjust transmission behavior, balancing efficiency and resource protection.
2Reliability
If transmission limits are strictly enforced, then resource protection is improved and network stability is maintained, but transmission flexibility and data delivery completeness deteriorate
Solution Approach 1:
The system dynamically adjusts transmission behavior based on real-time conditions. The UE can switch between different transmission modes (small data transmission in inactive state, RRC resume, RRC setup) depending on data amount and network responses. Transmission limits are not rigid barriers but dynamic thresholds that guide flexible decision-making.
Solution Approach 2:
The network can change transmission parameters (dataVolumeThreshold, sd-DataThreshold, sd-TotalDataThreshold) through RRC reconfiguration messages. These parameter changes allow the system to adapt to varying network conditions and traffic patterns, maintaining stability while preserving flexibility.
3Object-generated harmful factors
If multiple limit checking mechanisms are implemented, then resource protection is improved and transmission control is enhanced, but system complexity and processing overhead increase
Solution Approach 1:
The limit checking mechanism is segmented into distinct components: dataVolumeThreshold for initial transmission decisions, sd-DataThreshold for per-smallDataTransmission monitoring, and sd-TotalDataThreshold for cumulative monitoring. Each threshold operates at a different stage and scope, distributing the control complexity across multiple simple, specialized checks rather than one complex monolithic mechanism.
Solution Approach 2:
The UE autonomously performs limit checking and self-regulates its transmission behavior based on configured thresholds and network feedback. The device monitors its own uplink data amount, compares against limits, and makes independent decisions about transmission continuation or state transition, reducing the need for complex network-side control mechanisms.
Data Source
AI summary
An apparatus determines, during a small data transmission procedure in an inactive state, whether amount of uplink data transmitted or to be transmitted exceeds a limit, which indicates amount of uplink data that the apparatus is at least allowed to transmit during the small data transmission procedure. Wireless network signals information indicating the limit.