Preconfigured Uplink Resource Release in Wireless Idle Mode
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing preconfigured uplink resources in idle mode, particularly for UEs in Evolved Universal Terrestrial Radio Access Network (E-UTRAN) systems, which affects data transmission efficiency and power consumption.
Innovation Solution
The implementation of preconfigured uplink resources (PUR) in idle mode, where UEs use dedicated or shared PUSCH resources with HARQ support, and fallback mechanisms to RACH/EDT procedures, allowing for efficient data transmission without entering the RRC_CONNECTED state, and dynamic resource configuration based on TA validation and radio conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UEs use preconfigured uplink resources in idle mode for data transmission, then data transmission efficiency is improved and power consumption is reduced, but reliability of resource release and connection management deteriorates
Solution Approach 1:
The network performs preliminary actions by preconfiguring uplink resources for UEs in idle mode before actual data transmission is needed. The network side device sends a release notification to the UE when preconfigured resources need to be released, enabling the UE to clean up resources proactively and avoid connection establishment, thus improving both efficiency and reliability.
Solution Approach 2:
The patent implements a feedback mechanism where the network side device sends release notifications to UEs about preconfigured uplink resource status. This feedback loop ensures that UEs are informed when resources should be released, improving reliability of resource management while maintaining the efficiency benefits of preconfigured resources.
2Use of energy by moving object
If UEs remain in idle mode with preconfigured resources, then power consumption is reduced, but complexity of resource management and connection control increases
Solution Approach 1:
The patent extracts the resource release management function from the UE and places it with the network side device. The network sends release notifications to inform UEs when preconfigured resources should be released, simplifying UE complexity while maintaining efficient idle mode operation and low power consumption.
3Adaptability or versatility
If fallback mechanisms to RACH/EDT procedures are implemented, then adaptability to different network conditions is improved, but transmission time and processing overhead increase
Solution Approach 1:
The patent implements partial fallback mechanisms where UEs can fall back to RACH/EDT procedures only when necessary (e.g., when preconfigured resources are not suitable), rather than always using the full procedure. This selective approach maintains adaptability to different network conditions while minimizing transmission time by avoiding unnecessary fallbacks.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Methods and apparatuses for releasing preconfigured uplink resources configuration in a wireless communication system are disclosed herein. In one method, a User Equipment, UE, receives a configuration of a preconfigured uplink resource, PUR, when the UE is in a first RRC_CONNECTED state (1805). The UE enters a first RRC_IDLE state from the first RRC_CONNECTED state (1810). The UE performs a first transmission using the PUR when the UE is in the first RRC_IDLE state (1815). The UE enters a second RRC_CONNECTED state from the first RRC_IDLE state (1820). The UE suspends the configuration when the UE is in the second RRC_CONNECTED state (1825). The UE resumes the configuration when the UE enters a second RRC_IDLE state from the second RRC_CONNECTED state (1830). The UE performs a second transmission using the PUR when the UE is in the second RRC_IDLE state (1835).