Random Access Type Selection for Low-Latency Small Data
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in managing small data transmissions, particularly in selecting appropriate random access types, leading to suboptimal resource utilization and increased latency.
Innovation Solution
Implementing a mechanism for selecting between different random access types based on specific criteria, such as wireless device capabilities and network conditions, to optimize resource allocation and reduce latency in small data transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single random access type is used for all small data transmissions, then the system is simple to implement, but resource utilization is suboptimal and latency increases
Solution Approach 1:
The patent implements dynamic selection between two-step and four-step random access types based on real-time network conditions and device capabilities. The system adapts the random access procedure by evaluating criteria such as data size, QoS requirements, and channel conditions to choose the most appropriate access type, thereby optimizing resource utilization and reducing latency while maintaining implementation feasibility through structured decision logic.
2Loss of time
If traditional four-step random access is used for small data, then compatibility is maintained, but latency is increased and resource efficiency decreases
Solution Approach 1:
The patent changes the parameter of random access procedure length by introducing a two-step random access type that reduces the number of message exchanges from four to two. This parameter change directly reduces access latency and improves resource efficiency for small data transmissions, while the system maintains reliability by selectively applying the two-step procedure only when conditions are favorable and fallback mechanisms are in place.
3Productivity
If random access type selection is implemented, then resource utilization improves and latency reduces, but device complexity increases
Solution Approach 1:
The patent segments the random access type selection process into distinct evaluation criteria and decision stages. The system divides the selection mechanism into separate modules that evaluate different factors (data size, QoS, channel conditions) independently and combine their results to make the final selection. This segmentation reduces overall complexity by making the decision process more structured and manageable while still achieving optimal network performance.
Data Source
AI summary
A wireless device receives configuration parameters indicating a first transport block (TB) size threshold of a first random access (RA) type and indicating a second TB size threshold of a second RA type. The wireless device selects, for transmitting a data unit, an RA type among the first RA type and the second RA type. The RA type is selected based on a comparison among a size of the data unit, the first TB size threshold, and the second TB size threshold. A transport block with the data unit is transmitted using the RA procedure associated with the selected RA type.