Multiple Bandwidth Part CSI Reporting with BWP Switching
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Solution Overview
Problem
Existing wireless communication systems fail to efficiently manage bandwidth parts and other resources, leading to increased signaling overhead and reduced spectral efficiency.
Innovation Solution
Implementing a system that activates and deactivates bandwidth parts and other wireless resources by transmitting medium access control elements to manage bandwidth parts and other wireless resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional resource management methods are used, then system simplicity is maintained, but signaling overhead increases and spectral efficiency decreases
Solution Approach 1:
The patent divides the bandwidth into multiple bandwidth parts (BWPs), each with specific resource configurations. This segmentation allows the system to manage resources in smaller, more efficient units rather than treating the entire bandwidth as a single block, thereby improving spectral efficiency while maintaining manageable complexity through structured organization.
Solution Approach 2:
The patent implements dynamic BWP switching where bandwidth parts can be activated or deactivated based on current communication needs. This dynamic resource allocation allows the system to adapt to varying traffic conditions and channel states, improving spectral efficiency by allocating resources only where and when needed, rather than maintaining static resource assignments.
2Loss of time
If bandwidth parts are managed without MAC CE activation, then signaling overhead is reduced, but downlink data scheduling delay increases
Solution Approach 1:
The patent pre-configures multiple bandwidth parts with their resource allocations and parameters in advance. These pre-configured BWPs are stored and ready for rapid activation via MAC CE commands. This preliminary configuration eliminates the need for time-consuming resource setup when scheduling changes are needed, thereby reducing downlink data scheduling delay while keeping signaling overhead minimal through efficient MAC CE activation.
3Productivity
If multiple bandwidth parts are configured for resource management, then spectral efficiency improves, but device complexity increases
Solution Approach 1:
The patent creates a universal BWP management framework where a single set of configuration mechanisms (MAC CE activation, DCI-based switching) can manage multiple bandwidth parts with different characteristics. This multi-functional approach allows the same control structures to handle diverse resource allocation scenarios, improving spectral efficiency through flexible resource management while avoiding the need for separate complex management systems for each BWP.
Data Source
AI summary
A wireless device comprises one or more processors and memory storing instructions that, when executed by the one or more processors, cause the wireless device to receive a semi-persistent (SP) channel state information (CSI) activation/deactivation medium access control (MAC) control element (CE), receive downlink control information (DCI) for bandwidth part (BWP) switching, and transmit SP CSI report based on the SP CSI activation/deactivation MAC CE and the DCI for BWP switching. The DCI for BWP switching is received by the wireless device after the SP CSI activation/deactivation MAC CE is received by the wireless device.