Adaptive RBG Size Configuration for NR Frequency Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current New Radio (NR) frequency-domain resource allocation techniques face limitations in efficiently managing dynamic switching between large and small frequency-domain allocations, particularly in 3GPP NR systems, which affects scheduling flexibility and interference management.
Innovation Solution
The implementation of adaptive Resource Block Group (RBG) sizes and dynamic switching mechanisms between large and small frequency-domain allocations, using NR Type 0 and Type 1 RA schemes, allows for more efficient scheduling and interference management by configuring RBG sizes based on bandwidth parts and subcarrier spacing, enabling flexible resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed RBG sizes are used in frequency-domain resource allocation, then resource allocation simplicity is maintained, but scheduling flexibility and interference management capability deteriorate
Solution Approach 1:
The patent implements dynamic RBG size configuration where the RBG size is no longer fixed but adapts based on bandwidth part size and subcarrier spacing. The system dynamically selects between different RBG size configurations (e.g., P=2, P=4, P=8, P=16) depending on the active bandwidth part, enabling flexible resource allocation that adjusts to current network conditions while maintaining operational simplicity through standardized configuration sets.
Solution Approach 2:
The patent changes the RBG size parameter based on bandwidth part configuration and subcarrier spacing. Different bandwidth parts are associated with different RBG size configurations, allowing the system to optimize resource allocation granularity for different service requirements. This parameter change enables the same physical resource blocks to be allocated in different granularities depending on the active bandwidth part.
2Adaptability or versatility
If dynamic switching between large and small frequency-domain allocations is enabled, then scheduling flexibility is improved, but system complexity increases
Solution Approach 1:
The patent segments the frequency domain into multiple bandwidth parts, each with its own RBG size configuration. This segmentation allows independent optimization of different frequency resources without affecting the entire system. Each bandwidth part can be configured with appropriate RBG size (P=2, 4, 8, or 16) based on its specific requirements, enabling dynamic switching between different allocation granularities while maintaining manageable system complexity through modular configuration.
Solution Approach 2:
The patent creates a universal resource allocation framework that works across different bandwidth parts and subcarrier spacings. The same DCI format and resource allocation mechanisms can handle both large and small frequency-domain allocations by simply changing the active bandwidth part configuration. This multi-functionality reduces system complexity by using a unified approach rather than separate mechanisms for different allocation sizes.
3Object-affected harmful factors
If adaptive RBG sizes are implemented, then interference management capability is improved, but control signaling overhead increases
Solution Approach 1:
The patent changes the RBG size parameter based on bandwidth part configuration, allowing the system to adapt interference management strategies to different frequency resources. Larger RBG sizes (P=16) can be used for wideband allocations where interference averaging is beneficial, while smaller RBG sizes (P=2) can be used for narrowband allocations requiring precise interference control. This parameter adaptation improves interference management without requiring separate control mechanisms for each scenario.
Solution Approach 2:
The patent applies adaptive RBG sizing selectively based on bandwidth part requirements rather than uniformly across all allocations. The system uses larger RBG sizes only when beneficial for interference management in wideband scenarios, and smaller RBG sizes only when needed for precise control in narrowband scenarios. This partial application of adaptive sizing reduces unnecessary control overhead while maintaining interference management benefits where needed.
Data Source
AI summary
In one embodiment, an apparatus includes memory storing instructions and processing circuitry coupled to the memory. The processing circuitry is to implement the instructions to select a resource block group (RBG) size configuration from a set of RBG size configurations based on a bandwidth part (BWP) size. Each RBG size configuration is to indicate RBG sizes associated with respective ranges of BWP sizes, and the RBG sizes are to indicate a number of frequency-domain physical resource blocks (PRBs) for physical downlink shared channel (PDSCH) or physical uplink shared channel (PUSCH) transmissions. The processing circuitry is further to implement the instructions to allocate PRBs for communication between the gNB device and a user equipment (UE) device via the PDSCH or PUSCH transmissions based on the selected RBG size, and to encode downlink control information (DCI) that indicates the allocated PRBs for transmission to the UE device.