Uplink Carrier Selection for Small Data Transmission
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Solution Overview
Problem
Current communication technologies lack an effective method for selecting an optimal uplink carrier for small data transmission, leading to reduced success rates and increased power consumption in terminal devices.
Innovation Solution
A method and device that determine a target uplink carrier between Supplementary Uplink (SUL) and Normal Uplink (NUL) carriers based on channel quality, data size, Transport Block Size, load balancing factors, and network device indications to improve small data transmission success rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a terminal device transmits small data without a clear carrier selection method, then the transmission process is simple, but the success rate of transmission is reduced and power consumption increases
Solution Approach 1:
The patent applies parameter changes by dynamically selecting uplink carriers based on multiple parameters including channel quality indicators (CQI), transport block sizes (TBS), and load balancing factors. The terminal device changes its transmission parameters (carrier selection) according to current channel conditions and network state, thereby improving transmission success rate while optimizing power consumption through adaptive parameter adjustment rather than fixed carrier usage
Solution Approach 2:
The patent implements dynamics by making the carrier selection process adaptive and dynamic rather than static. The terminal device continuously monitors channel quality, data size requirements, and network load conditions, then dynamically selects the most appropriate uplink carrier (SUL or NUL) for each transmission opportunity. This dynamic adaptation ensures high transmission success rates while avoiding unnecessary power consumption from repeated transmission failures
2Reliability
If multiple parameters are considered for carrier selection, then transmission success rate is improved, but the complexity of selection process increases
Solution Approach 1:
The patent applies segmentation by dividing the carrier selection process into distinct evaluation dimensions: channel quality assessment (CQI-based), data size matching (TBS comparison), and network load consideration (load balancing factors). Each parameter is evaluated separately and contributes to the final carrier selection decision, making the complex multi-parameter selection process more manageable and implementable through structured segmentation of the decision-making process
Solution Approach 2:
The patent implements feedback mechanisms where the terminal device receives network device indications and uplink carrier assignments based on its transmission requests. The network device provides feedback information about preferred carriers and transmission parameters, which the terminal device uses to refine its carrier selection strategy. This feedback loop reduces selection complexity by guiding the terminal device's decisions based on network conditions and previous transmission outcomes
Data Source
AI summary
Provided are a method and a device for transmitting small data, capable of improving a success rate of a terminal device in transmitting the small data, which is advantageous in saving power of the terminal device. The method includes: determining, by a terminal device, a target uplink carrier from a Supplementary Uplink (SUL) carrier and a Normal Uplink (NUL) carrier based on first information, the first information including at least one of: channel quality of a serving cell, a size of data to be transmitted, a Transport Block Size (TBS) supported by the SUL carrier and a TBS supported by the NUL carrier, a load balancing factor of the SUL carrier and a load balancing factor of the NUL carrier, and an uplink carrier indicated by a network device for transmitting the small data; and transmitting, by the terminal device, the small data on the target uplink carrier.