Communication Node RA Procedure Selection for Small Data
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Solution Overview
Problem
Current wireless communication systems, particularly in the RRC_INACTIVE state, face inefficiencies in small packet transmission due to reliance on RSRP for RA_TYPE selection, leading to unnecessary power consumption and reduced efficiency in transmitting small data packets.
Innovation Solution
A method that determines RA_TYPE based on a size relation between the data size and a threshold, allowing for flexible selection between different RA procedures, reducing power consumption and enhancing transmission efficiency by optimizing data transmission in the RRC_INACTIVE state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If RA_TYPE selection is based solely on RSRP threshold, then the selection process is simple, but the transmission efficiency of small data packets deteriorates
Solution Approach 1:
The patent changes the parameter basis for RA_TYPE selection from solely RSRP threshold to a combination of data size threshold and RSRP threshold. This allows the system to adapt the selection criteria based on different data characteristics, thereby improving transmission efficiency for small data packets while maintaining reasonable system complexity through structured decision logic.
2Reliability
If UE switches to RRC_CONNECTED state to transmit small packets, then transmission reliability is improved, but power consumption increases
Solution Approach 1:
The patent enables preliminary data transmission in RRC_INACTIVE state by selecting appropriate RA_TYPE (2-Step or 4-Step RACH) based on data size and RSRP conditions. This allows small packets to be transmitted directly from INACTIVE state without first switching to CONNECTED state, thereby reducing power consumption while maintaining acceptable transmission reliability through proper protocol selection.
3Speed
If 2-Step RACH is selected for all small data transmissions, then transmission speed is improved, but transmission reliability deteriorates due to unsuitable conditions
Solution Approach 1:
The patent introduces dynamic selection between 2-Step RACH and 4-Step RACH based on real-time assessment of data size and RSRP conditions. The system dynamically adjusts the RA_TYPE selection rather than using a fixed approach, allowing 2-Step RACH to be used when conditions are favorable for speed while falling back to 4-Step RACH when reliability is more critical, thus balancing both performance aspects.
Data Source
AI summary
The present disclosure provides a method and device used in communication node for wireless communication. A communication node receives a first signaling; generates a first data block in a first radio state; when a first condition set is satisfied, transmits a first signal; and when the first condition set is not satisfied, transmits a second signal; the first signaling is used to determine a first threshold, the first threshold being a positive integer; the first condition set comprises a size relation between a first data size and the first threshold; the first data block comprises more than one bit, and the first data size is equal to a number of bits comprised in the first data block; the first signal is used for a first-type Random Access (RA) procedure, and the second signal is used for a second-type RA procedure; the first signal carries a first sequence.