Small Data Transmission Signaling for Low-Latency RRC Inactive Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing small data transmissions in RRC inactive and idle states, particularly in 5G networks, leading to increased latency and resource inefficiencies.
Innovation Solution
Implementing enhanced data transmission procedures that optimize anchor relocation and signaling processes for mobile devices in RRC inactive and idle states, utilizing flexible protocol stacks and adaptive bandwidth configurations to facilitate efficient small data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If small data transmission is performed in RRC inactive/idle states using existing procedures, then device mobility and connectivity are maintained, but latency increases and network resources are wasted
Solution Approach 1:
The patent applies preliminary action by pre-configuring downlink control information (DCI) formats and search spaces for small data transmission before the actual data transfer. The gNB configures DCI format 2-0 with specific parameters (time resources, frequency resources, MCS) and establishes search space configurations in advance, allowing the UE to quickly decode and execute scheduling decisions without lengthy setup procedures, thereby reducing latency while maintaining efficient resource usage.
Solution Approach 2:
The patent implements dynamics by enabling flexible adaptation of transmission parameters based on real-time conditions. The system dynamically adjusts time resources, frequency resources, and modulation and coding schemes (MCS) through DCI signaling, allowing the gNB to optimize resource allocation according to current network load and UE requirements. This dynamic configuration enables efficient resource utilization while maintaining low latency through rapid parameter changes.
2Productivity
If enhanced data transmission procedures are implemented for RRC inactive/idle states, then small data transmission efficiency improves, but protocol complexity increases
Solution Approach 1:
The patent applies universality by designing a multi-functional DCI format 2-0 that serves multiple purposes: it provides downlink scheduling information, indicates small data transmission activation, specifies time and frequency resources, and conveys MCS parameters. This single DCI format replaces what would traditionally require multiple separate signaling messages, reducing protocol complexity while enhancing data transmission efficiency for RRC inactive/idle states.
Solution Approach 2:
The patent merges multiple control functions into a unified DCI structure. By combining scheduling information, resource allocation, and transmission parameter indication into a single downlink control information message, the system reduces the number of separate protocol steps required. This consolidation simplifies the overall procedure for small data transmission in RRC inactive/idle states while maintaining high efficiency.
3Use of energy by stationary object
If flexible protocol stacks and adaptive bandwidth configurations are used, then resource utilization improves, but implementation complexity increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting key transmission parameters including time resources, frequency resources, and modulation and coding schemes (MCS) based on real-time network conditions and UE requirements. The gNB modifies these parameters through DCI signaling to optimize resource allocation, improving energy efficiency and resource utilization while managing implementation complexity through standardized parameter adjustment mechanisms.
Data Source
AI summary
A second base station sends to a first base station, a request for a context of a wireless device, wherein the request comprises assistance information for a small data transmission (SDT) procedure of the wireless device. The assistance information indicates whether single data associated with the SDT procedure is expected, or more than single data associated with the SDT procedure is expected.