Early Data Transmission Uplink Selection for Idle Mode Small Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In mobile communication systems, terminals in idle or inactive modes face challenges in efficiently transmitting and receiving small-sized user data without switching to a connected mode during random access procedures.
Innovation Solution
The method involves a terminal and base station exchanging system information for early data transmission (EDT), including configuration details for normal and supplementary uplinks, and reference signal received power thresholds to determine whether to apply the supplementary uplink, enabling efficient random access and data transmission through the determined uplink.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a terminal in idle or inactive mode transmits small-sized user data through a connected mode random access procedure, then the data transmission can be performed, but the terminal must switch to connected mode which increases signaling overhead and delays transmission
Solution Approach 1:
The patent applies preliminary action by pre-configuring EDT parameters and resources during connected mode operation. The network configures EDT-specific parameters (preamble groups, power offsets, resource allocations) while the terminal is still in connected mode, so that when the terminal transitions to idle/inactive mode, the EDT mechanism is already prepared and can be immediately activated without requiring full connected mode re-establishment. This preliminary configuration enables fast data transmission while minimizing mode switching delays.
Solution Approach 2:
The patent segments the random access procedure into two distinct paths: traditional connected mode random access and EDT random access. By dividing the random access preamble into different groups (EDT-specific preambles vs. traditional preambles) and providing separate resource configurations, the system allows the terminal to select the appropriate segment based on data size and QoS requirements. This segmentation enables efficient handling of small data packets through EDT while maintaining traditional procedures for larger data transmissions.
2Reliability
If the terminal switches to connected mode for data transmission, then reliable data transfer is ensured, but resource utilization increases and power consumption rises
Solution Approach 1:
The patent applies local quality by providing differentiated resource configurations and parameter sets tailored specifically for EDT operations versus traditional connected mode operations. The network configures EDT-specific parameters including dedicated preamble groups, adjusted power offsets, and optimized resource allocations that are locally adapted for small data transmissions. This localized optimization ensures reliable transmission for small packets while avoiding the higher power consumption and resource utilization associated with full connected mode establishment.
3Adaptability or versatility
If multiple uplink configurations (NUL and SUL) are provided for EDT, then the terminal can select the optimal uplink based on RSRP thresholds, but the system complexity and configuration overhead increase
Solution Approach 1:
The patent applies dynamics by enabling the terminal to dynamically select between NUL and SUL based on real-time RSRP measurements and configured thresholds. The system provides dynamic uplink configuration where the terminal evaluates current channel conditions, compares RSRP values against threshold information, and automatically selects the most appropriate uplink for EDT transmission. This dynamic selection mechanism provides adaptability to varying channel conditions while maintaining manageable complexity through automated decision-making based on pre-configured parameters.
Data Source
AI summary
The present disclosure relates to a communication technique for combining, with IoT technology, a 5G communication system for supporting a higher data transmission rate than a 4G system, and a system therefor. The present disclosure may be applied to intelligent services, such as smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail businesses, and security and safety related services, on the basis of 5G communication technologies and IoT-related technologies. According to various embodiments of the present invention, a method and an apparatus for effectively transmitting data of a small size in a next-generation mobile communication system may be provided.