Inactive State Non-SDT Data Indication for RRC Resumption
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Solution Overview
Problem
In wireless communication systems, terminal devices in an inactive state require frequent connection resumptions for both small and non-small data transmissions, leading to unnecessary power consumption and signaling overhead, especially when transitioning between small data transmission (SDT) and normal data transmission (non-SDT) scenarios.
Innovation Solution
A method where a terminal device in an inactive state indicates the presence of non-small data transmission data and associated information to a network device, allowing the network to determine whether to resume the RRC connection and stop or continue the ongoing small data transmission procedure, especially beneficial in overload situations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the terminal device performs normal data transmission in inactive state using SDT, then power consumption is reduced, but the terminal cannot transmit non-small data transmission data
Solution Approach 1:
The patent implements dynamic adaptability by enabling the terminal device to flexibly switch between SDT and non-SDT transmission modes based on data size requirements. The network device dynamically decides whether to resume RRC connection or continue SDT procedure based on the indication of non-SDT data presence, making the system adaptable to varying data transmission needs while optimizing power consumption
2Adaptability or versatility
If the terminal device resumes connection for non-SDT data transmission, then complete data transmission is enabled, but power consumption and signaling overhead increase
Solution Approach 1:
The patent applies partial action by indicating only the presence of non-SDT data rather than immediately resuming full connection. The network device receives an indication message containing information about non-SDT data and decides whether partial connection resumption is necessary, avoiding excessive connection establishment procedures for small amounts of non-SDT data and reducing associated power consumption and signaling overhead
3Reliability
If the terminal device frequently resumes connection for data transmission, then data transmission reliability is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts the essential information about non-SDT data presence into a separate indication message that can be transmitted without full connection resumption. This allows the network device to make informed decisions about connection management based on extracted key information, reducing unnecessary connection establishment and release procedures, thereby lowering signaling overhead while maintaining data transmission reliability
Data Source
AI summary
Example embodiments of the present disclosure relate to UP transmission for a device in an inactive state. The first device in an inactive state performs a small data transmission procedure between the first device and a second device and transmits an indication to the second device. The indication indicates the following a presence of non-small data transmission data to be transmitted by the first device and information associated with the data. Through this solution, the second device may make a proper and reasonable determination about whether to resume a radio resource control connection with the terminal device and whether to stop the ongoing small data transmission procedure.