RACH-Based Small Data Transmission Bandwidth Configuration
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Solution Overview
Problem
Current wireless communication technologies lack a standardized method for configuring bandwidth for small data transmission (SDT) procedures in the inactive state, particularly for RACH-based SDT, which affects power consumption and efficiency.
Innovation Solution
A terminal device determines a target bandwidth before performing a RACH-based SDT procedure, allowing for flexible configuration of initial or dedicated bandwidths for UL and DL channels, enabling efficient data transmission without transitioning to the connected state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the terminal device performs data transmission in the inactive state using RACH-based SDT, then power consumption is reduced and overhead is reduced, but there is no standardized method for configuring bandwidth which affects transmission efficiency
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting bandwidth configuration for RACH-based SDT procedures. The network device configures specific bandwidth parameters (initial bandwidth and/or dedicated bandwidth) for SDT operations, allowing the system to optimize transmission efficiency while maintaining the power-saving benefits of inactive state operation. This resolves the contradiction by enabling efficient resource utilization without requiring full connected state activation.
2Productivity
If the terminal device enters the connected state for data transmission, then transmission efficiency is improved, but power consumption and overhead increase
Solution Approach 1:
The patent applies segmentation by dividing bandwidth allocation into distinct segments: initial bandwidth for basic SDT operations and optional dedicated bandwidth for enhanced transmission. This segmented approach allows the terminal to perform data transmission in the inactive state with sufficient resources, avoiding the need to transition to the connected state while maintaining acceptable transmission efficiency. The segmented bandwidth configuration resolves the contradiction by providing targeted resources for SDT without full connection overhead.
3Adaptability or versatility
If a separate bandwidth is configured for RACH-based SDT, then transmission flexibility is improved, but device complexity and configuration overhead increase
Solution Approach 1:
The patent applies universality by designing a bandwidth configuration mechanism that serves multiple functions: it provides initial bandwidth for all SDT operations and optionally configures dedicated bandwidth for specific scenarios. This universal configuration approach, implemented through standardized signaling (OCTET STRING format with flexible field options), achieves transmission flexibility without proportionally increasing device complexity. The configuration can be adapted to different deployment scenarios, resolving the contradiction between flexibility and complexity.
Data Source
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AI summary
A method and an apparatus for data transmission, a communication device, and a storage medium are provided, relating to the field of wireless communication. The method is applied to a terminal device. The method includes the following. Determine a target bandwidth used for a random access channel (RACH)-based small data transmission (SDT) procedure. Perform the RACH-based SDT procedure with a network device on the target bandwidth, where the SDT procedure is a data transmission procedure in an inactive state of the terminal device. As such, the terminal device can perform the RACH-based SDT procedure on the target bandwidth determined.