Dual-Connectivity Mobility Using SRB3 LTM Cell Switching
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Solution Overview
Problem
Existing wireless communication systems face challenges in optimizing mobility management and resource allocation in heterogeneous networks, particularly in 5G New Radio (NR) environments, leading to inefficiencies in bandwidth utilization and user experience.
Innovation Solution
Implementing bandwidth part (BWP) switching mechanisms and carrier aggregation techniques in NR systems to dynamically adjust bandwidth and carrier configurations based on traffic conditions and device capabilities, enhancing mobility and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bandwidth part switching mechanisms are implemented to dynamically adjust bandwidth, then bandwidth utilization efficiency is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic bandwidth part switching mechanisms that allow the system to adapt bandwidth allocation in real-time based on traffic conditions and device capabilities. The network can switch between different bandwidth parts (BWPs) to optimize resource utilization, transforming the static bandwidth allocation into a dynamic system that responds to changing network conditions.
Solution Approach 2:
The patent changes the bandwidth parameter by configuring multiple bandwidth parts with different bandwidth characteristics. The system can switch between these pre-configured bandwidth parts to adapt to varying traffic demands, effectively using parameter changes to resolve the contradiction between utilization efficiency and device complexity.
2Productivity
If carrier aggregation techniques are implemented to enhance mobility and resource allocation, then network efficiency is improved, but device complexity increases
Solution Approach 1:
The patent implements carrier aggregation techniques that merge multiple component carriers to form a aggregated carrier, thereby enhancing network efficiency and resource allocation capabilities. By combining multiple carriers, the system achieves improved mobility management and resource utilization while managing device complexity through standardized aggregation procedures.
Solution Approach 2:
The patent creates a universal carrier aggregation framework that can accommodate different device capabilities and traffic conditions. The aggregated carrier structure provides multi-functional support for various services and scenarios, making the system universally applicable while maintaining manageable complexity through standardized interfaces.
3Adaptability or versatility
If dynamic bandwidth adjustment is implemented based on traffic conditions, then adaptability to varying traffic demands is improved, but control complexity increases
Solution Approach 1:
The patent implements feedback mechanisms that monitor traffic conditions and device states, using this information to dynamically adjust bandwidth part configurations. The feedback loop enables the system to adapt to varying traffic demands by continuously gathering information about network conditions and adjusting resource allocation accordingly, resolving the contradiction between adaptability and control complexity.
Solution Approach 2:
The patent employs preliminary action by pre-configuring multiple bandwidth parts with different characteristics before actual traffic occurs. This allows the system to quickly switch between pre-prepared configurations in response to traffic changes, reducing the real-time control complexity while maintaining high adaptability to varying traffic demands.
Data Source
AI summary
A wireless device communicates first packets with a master base station associated with a dual connectivity of the wireless device and second packets with a secondary base station associated with the dual connectivity. The wireless device receives, from the secondary base station and via a signaling radio bearer 3 (SRB3), a radio resource control (RRC) reconfiguration message indicating a layer 1 and/or layer 2 based mobility (LTM) procedure for the wireless device, wherein the RRC reconfiguration message comprises an identifier of a target cell for the LTM procedure, and configuration parameters of the target cell. The wireless device sends, to the secondary base station, one or more layer 1 measurement reports of the target cell, receives, from the secondary base station, a medium access control (MAC) control element (CE) triggering a cell change to the target cell for the LTM procedure, and sends, to the secondary base station and via the SRB3, an RRC reconfiguration complete message for the LTM procedure after receiving the MAC CE.