Subsequent Data Assistance for Low-Latency Small Data Transmission

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Solution Overview

Problem

Existing wireless communication systems face inefficiencies in managing small data transmissions, particularly in scenarios where subsequent data transmissions are expected, leading to suboptimal resource allocation and increased latency.

Innovation Solution

A base station distributed unit (DU) receives an RRC request message from a wireless device and sends assistance information to a base station central unit (CU) indicating the expectation of subsequent small data transmissions, enabling more efficient resource management and allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional random access procedure is used for small data transmission, then the transmission can be initiated, but resource allocation is suboptimal and latency increases

Engineering Contradiction:

Improvesmall data transmission efficiencyVSAvoidtransmission latency

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The base station DU proactively identifies and flags small data transmissions before they occur by analyzing uplink data patterns and characteristics. This preliminary identification enables the system to prepare appropriate resource allocations in advance, avoiding the need for full random access procedures and reducing latency.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary mechanism where the base station DU sends assistance information to the base station CU, which then coordinates with the scheduling entity. This intermediary communication channel enables efficient resource allocation decisions without requiring the UE to undergo complete random access procedures.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If standard random access procedure is followed, then resource allocation can be obtained, but resource allocation efficiency decreases

Engineering Contradiction:

Improveresource allocation reliabilityVSAvoidresource allocation efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system implements feedback mechanisms where the base station DU continuously monitors uplink data transmissions and provides assistance information to the CU about small data patterns. This feedback loop enables the scheduling entity to make informed resource allocation decisions that are both reliable and efficient.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent changes the operational parameters by introducing assistance information flags and indicators that differentiate small data transmissions from regular transmissions. This parameter change enables the system to apply different resource allocation strategies specifically optimized for small data, improving overall efficiency while maintaining reliability.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250240848A1Subsequent Data Assistance Information for Small Data Transmission

Publication Date: 2025.07.24 OFINNO LLC

AI summary

A base station distributed unit (DU) receives, from a wireless device, a radio resource control (RRC) request message associated with a small data transmission (SDT) procedure of the wireless device. The base station DU sends, to a base station central unit (CU) the RRC request message and assistance information indicating whether a subsequent SDT is expected for the SDT procedure.