SDT Procedure Power Saving Through UE-Controlled Inactive-State Decisions
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Solution Overview
Problem
Existing SDT procedures in wireless communication systems are inefficient in power management, as they are solely controlled by the network device, leading to potential power waste due to unnecessary state transitions and inefficient data transmission.
Innovation Solution
User equipment (UE) generates and reports first information to the network device regarding its capabilities and preferences for SDT, allowing the UE to determine and control the SDT procedure based on its configuration information, thereby optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the SDT procedure is solely controlled by the network device, then the network can manage data transmission, but power consumption increases due to unnecessary state transitions and inefficient data transmission
Solution Approach 1:
The UE is empowered to autonomously determine whether to perform the SDT procedure in the inactive state based on configuration information from the network and its own capabilities. The UE self-manages the transmission decision, selecting appropriate transmission schemes (e.g., random access channel-based or configured grant-based) without requiring network-controlled state transitions, thereby reducing power consumption while maintaining transmission efficiency.
2Use of energy by moving object
If the UE autonomously determines SDT procedure, then power efficiency improves, but control complexity increases
Solution Approach 1:
The network device provides configuration information to the UE in advance, including parameters and capabilities needed for autonomous SDT decision-making. This preliminary configuration enables the UE to autonomously determine the SDT procedure without real-time network control, reducing power consumption while the pre-established configuration minimizes the complexity of autonomous control.
3Productivity
If the UE reports capabilities and preferences for SDT, then the SDT procedure can be optimized, but signaling overhead increases
Solution Approach 1:
The UE extracts and reports only the essential capability information related to SDT procedures (e.g., support for random access channel-based SDT, configured grant-based SDT, and associated parameters) to the network. This selective extraction of necessary information enables SDT optimization while minimizing signaling overhead by excluding redundant capability details.
Data Source
AI summary
Provided is a method for a user equipment (UE). The UE generates a first information for the UE for transmission to a network device. The first information is associated with a small data transmission (SDT) procedure in an inactive state of the UE. The UE obtains a first configuration information from the network device. The first configuration information is determined with reference to the first information. The UE determines whether to perform the SDT procedure in the inactive state according to the first configuration information. The UE, in response to determining to perform the SDT procedure in the inactive state, performs the SDT procedure in the inactive state according to the first configuration information.