Sidelink Bearer Mode Switching for Adaptive 5G NR Resource Allocation
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing sidelink bearer mode changes in heterogeneous networks, particularly in 5G New Radio (NR) environments, leading to suboptimal resource allocation and user experience.
Innovation Solution
Implementing a mechanism for dynamic sidelink bearer mode change in wireless devices based on specific criteria such as traffic load, packet sizes, and network conditions, allowing for adaptive configuration of sidelink bearers to optimize resource utilization and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If static bearer configuration is used, then device complexity is reduced, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent implements dynamic bearer mode switching that allows the sidelink bearer to transition between different modes (e.g., Mode 1 and Mode 2 in 5G NR) based on real-time network conditions, traffic characteristics, and QoS requirements. This dynamic adaptation enables the system to optimize resource allocation efficiency by selecting the most appropriate bearer mode for each specific scenario, rather than using a static configuration that must accommodate all possible conditions.
2Productivity
If dynamic bearer mode change is implemented, then resource allocation efficiency is improved, but device complexity increases
Solution Approach 1:
The patent incorporates feedback mechanisms where the wireless device continuously monitors network conditions, sidelink channel quality, traffic load, and QoS parameter changes. Based on this feedback information, the device or network controller determines the optimal bearer mode and triggers appropriate mode transitions. This feedback-driven approach ensures that dynamic bearer mode changes are performed only when necessary, optimizing resource allocation while avoiding unnecessary complexity from constant mode switching.
Solution Approach 2:
The patent utilizes changes in QoS parameters (such as 5QI, priority levels, packet delay budgets, and packet error rates) as triggers for bearer mode transitions. When specific parameter thresholds are crossed or when parameter changes indicate a change in service requirements, the system dynamically adjusts the bearer mode to match the new QoS demands. This parameter-based decision-making simplifies the complexity by providing clear, objective criteria for mode transitions rather than requiring complex real-time analysis of all possible conditions.
3Adaptability or versatility
If bearer mode changes are frequent, then adaptability to network conditions is improved, but stability of connection deteriorates
Solution Approach 1:
The patent implements mechanisms where the network or device performs preliminary assessment of whether a bearer mode change is truly necessary before executing the transition. This includes evaluating current bearer performance, predicting future network conditions, and determining if the anticipated benefits of mode switching outweigh the potential disruption. By performing this preliminary action, the system achieves adaptability to network conditions while avoiding unnecessary mode changes that would compromise connection stability.
Solution Approach 2:
The patent employs periodic evaluation of bearer mode requirements at predetermined intervals or based on event triggers (such as QoS parameter changes, handover events, or traffic pattern changes). Rather than continuously monitoring and potentially switching modes at every minor fluctuation, the system performs structured periodic assessments that balance adaptability with stability. This periodic action ensures the system responds to genuine changes in network conditions while maintaining connection stability during normal operation.
Data Source
AI summary
A first wireless device receives, from a base station, configuration parameters for a resource allocation mode 1 of a sidelink bearer between the first wireless device and a second wireless device. The first wireless device receives, from the base station, at least one parameter indicating the sidelink bearer to transition from the resource allocation mode 1 to a resource allocation mode 2. The first wireless device transmits, to the second wireless device, transport blocks via the sidelink bearer based on the resource allocation mode 2.