Dual-Connectivity Mobility Configuration for PSCell Change Control
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing layer 1 and layer 2 triggered mobility in dual connectivity scenarios, particularly in 5G networks, leading to suboptimal performance and resource allocation inefficiencies.
Innovation Solution
Implementing a configuration mechanism that dynamically adjusts settings in wireless devices and base stations based on specific criteria such as traffic load, packet sizes, and device capabilities to optimize layer 1 and layer 2 mobility in dual connectivity environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If layer 1 and layer 2 triggered mobility is implemented in dual connectivity, then network performance and resource allocation are improved, but device complexity and configuration management difficulty increase
Solution Approach 1:
The patent segments the configuration management task by introducing separate IE types (First IE for layer 1 triggered mobility, Second IE for layer 2 triggered mobility) that can be independently configured and managed. This allows the complex dual connectivity mobility mechanism to be divided into manageable components, each with specific parameters and behaviors, thereby reducing overall configuration management complexity while maintaining enhanced network performance.
2Productivity
If dynamic configuration adjustment is implemented based on traffic load and packet sizes, then resource allocation efficiency is improved, but signaling overhead and processing complexity increase
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting mobility trigger thresholds based on traffic load and packet size conditions. The network can modify parameters such as mobility trigger thresholds, packet size criteria, and traffic load thresholds to optimize resource allocation efficiency under different network conditions, enabling adaptive configuration without requiring complex reconfiguration procedures.
3Productivity
If mobility triggers are based on packet size and traffic load criteria, then resource allocation is optimized, but measurement and detection complexity increase
Solution Approach 1:
The patent implements feedback mechanisms where the network continuously monitors traffic load and packet size parameters, compares them against configured thresholds, and adjusts mobility triggers accordingly. This feedback loop enables the system to optimize resource allocation by responding to real-time network conditions, while the feedback mechanism itself simplifies the detection process by using pre-configured threshold comparisons rather than complex real-time analysis.
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3
AI summary
A first candidate secondary base station receives, from a master base station, a secondary node modification request message comprising a first identifier of a first candidate primary secondary cell group cell (PSCell), of the first candidate secondary base station, for a first layer 1 or layer 2 triggered mobility (LTM) associated with a first PSCell change to the first candidate PSCell for a wireless device, a second identifier of a second candidate PSCell for a second LTM associated with a second PSCell change to the second candidate PSCell for the wireless device, wherein the second LTM is initiated by the first candidate secondary base station, a first LTM configuration identifier indicating a first configuration of the first LTM to the first candidate PSCell, and a second LTM configuration identifier indicating a second configuration of the second LTM to the second candidate PSCell.