5G RedCap Small Data Transmission Condition Configuration
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Solution Overview
Problem
Current small data transmission (SDT) procedures in 5G networks are suboptimal for RedCap devices due to their limited capabilities, leading to frequent failures and interference with other devices.
Innovation Solution
The proposed solution involves adjusting the conditions for SDT by transmitting specific indications to RedCap devices, taking into account their limited capabilities, such as reduced antenna branches and bandwidth. These adjustments include modifying uplink data amount thresholds and RSRP thresholds, allowing RedCap devices to initiate SDT procedures more effectively while in a radio resource control inactive or idle state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard small data transmission conditions are applied to RedCap devices, then general network operation is maintained, but transmission reliability deteriorates due to frequent failures
Solution Approach 1:
The patent applies local quality by configuring device-type-specific SDT conditions. The network entity stores multiple sets of conditions (first conditions for RedCap devices, second conditions for other devices) and selectively applies the appropriate set based on device type identification. This ensures that RedCap devices with limited capabilities use optimized thresholds tailored to their constraints, while other devices use standard thresholds, thereby improving reliability without compromising overall network adaptability.
Solution Approach 2:
The patent implements parameter changes by modifying key SDT parameters such as uplink data amount thresholds and RSRP thresholds specifically for RedCap devices. These parameter adjustments account for the reduced capabilities of RedCap devices (fewer antenna branches, limited bandwidth) and optimize transmission conditions accordingly, directly addressing the reliability issue while maintaining compatibility with standard devices through separate parameter sets.
2Productivity
If device-specific conditions are implemented, then transmission efficiency improves, but system complexity increases
Solution Approach 1:
The patent applies self-service by enabling the network entity to automatically identify device types and select appropriate SDT conditions without manual intervention. The system autonomously manages the complexity of storing and selecting multiple condition sets based on device type information received during SDT initiation, thereby improving transmission efficiency while keeping the complexity management automated rather than requiring external configuration for each device.
Solution Approach 2:
The patent implements universality by designing a unified condition management framework that handles multiple device types through a single system. The network entity maintains a universal structure that can store and manage different condition sets for various device types, allowing the same system to serve both RedCap and non-RedCap devices efficiently, thus improving overall productivity without proportionally increasing complexity.
Data Source
AI summary
Disclosed is a method comprising obtaining one or more first conditions for small data transmission, said one or more first conditions being specific to a first device type, wherein the one or more first conditions are different compared with one or more second conditions for small data transmission, said one or more second conditions being associated with a second device type different to the first device type; and initiating, if the one or more first conditions are fulfilled, a small data transmission procedure, while in a radio resource control inactive state or idle state.