Transmission Resource Switching for NTN Signaling Overhead Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Next-generation wireless communication systems face challenges in managing high signaling overhead due to the large number of user equipment (UEs) in non-terrestrial networks (NTNs) with satellite coverage, particularly in scenarios with high mobility, where frequent beam and frequency switching are required, leading to increased signaling costs.
Innovation Solution
The proposed solution involves transmission resource switching techniques, including timer-based, threshold-based, and location-based methods, which allow user devices to automatically switch between transmission resources such as beams and bandwidth parts (BWPs) with reduced signaling overhead, using configuration messages and RRC reconfiguration to manage resource switching based on predictable movements and quality metrics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frequent beam and frequency switching is performed to support high mobility scenarios, then mobility management capability is improved, but signaling overhead increases
Solution Approach 1:
The network device pre-configures multiple sets of transmission resources (beams, frequency resources, time resources) and switching parameters (timer values, threshold values, location information) before mobility events occur. This allows the user equipment to perform autonomous switching without frequent network signaling, resolving the contradiction by preparing switching capabilities in advance.
Solution Approach 2:
The user equipment is enabled to autonomously perform transmission resource switching based on pre-configured parameters and local measurements (quality metrics, location information). This self-service mechanism eliminates the need for network-controlled switching signaling, reducing overhead while maintaining adaptability to mobility scenarios.
2Loss of information
If timer-based switching is implemented to reduce signaling overhead, then autonomous switching capability is improved, but switching flexibility may be reduced
Solution Approach 1:
The system implements multiple switching mechanisms (timer-based, threshold-based, location-based) that can be configured in combination. The network can dynamically select and configure different switching triggers based on scenario requirements, allowing the system to adapt between autonomous operation and network control as needed, thus maintaining flexibility while reducing overhead.
Solution Approach 2:
The configuration message framework is designed to support multiple switching modes (timer, threshold, location) within a unified structure. This multi-functional approach allows the same basic mechanism to serve different switching needs, maintaining flexibility across various mobility scenarios while keeping the signaling overhead reduced through autonomous operation.
3Adaptability or versatility
If multiple switching mechanisms (timer, threshold, location) are configured, then adaptability to different scenarios is improved, but configuration complexity increases
Solution Approach 1:
The configuration is segmented into separate, independently configurable parameters for each switching mechanism (timer values for timer-based switching, threshold values for quality-based switching, location information for location-based switching). This modular segmentation allows the network to enable only the mechanisms needed for specific scenarios, reducing configuration complexity while maintaining overall adaptability.
Data Source
AI summary
Methods, systems, and devices for transmission resource switching are described. A wireless communication method is provided to comprise configuring, by a network device, a configuration message to facilitate a transmission resource switching among sets of resources; and communicating, by the network device, with a user device to perform the transmission resource switching.