SBFD UE Single Downlink Subband Scheduling for Lower Filtering Load
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Solution Overview
Problem
Existing 5G NR technologies face challenges in accommodating user equipment (UEs) with limited bandwidth capacity or processing power that prefer using a single downlink subband for subband full duplex (SBFD) operations, leading to inefficiencies and increased computational load.
Innovation Solution
The implementation of SBFD-aware UEs that operate using a single downlink subband, allowing for both semi-static and dynamic scheduling options, ensuring broader compatibility and reducing computational load through simpler filtering processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple downlink subbands are used for SBFD operations, then network capacity and spectral efficiency are improved, but computational load and filtering complexity increase
Solution Approach 1:
The patent divides the downlink bandwidth into multiple subbands, allowing the network to selectively activate only the necessary subbands for each UE based on its capabilities and service requirements. This segmentation enables the system to achieve high network capacity when needed while reducing filtering complexity for UEs that operate on fewer subbands.
Solution Approach 2:
The patent implements partial action by allowing UEs to operate with a subset of the total available subbands. Instead of requiring all UEs to process all subbands, the system activates only the necessary portion (one or more subbands) for each UE, thereby reducing computational load and filtering complexity while maintaining network capacity for users who need it.
2Productivity
If multiple downlink subbands are configured, then spectral efficiency is improved, but processing power requirements and computational load increase
Solution Approach 1:
The patent implements dynamic subband activation where the network can flexibly configure and activate specific subbands for each UE based on real-time network conditions, UE capabilities, and service requirements. This dynamic approach allows spectral efficiency to be optimized when needed while reducing processing power requirements for UEs with limited capabilities or during low-traffic conditions.
Solution Approach 2:
The patent changes the operational parameters by allowing UEs to be configured with different numbers of active subbands (e.g., one subband or multiple subbands) based on their processing power capabilities. This parameter adjustment enables the system to maintain high spectral efficiency for capable UEs while reducing processing power requirements for constrained UEs.
3Adaptability or versatility
If SBFD-aware UEs with single downlink subband are implemented, then compatibility with limited-capability devices is improved, but overall network resource utilization may be reduced
Solution Approach 1:
The patent creates a universal system that can accommodate both limited-capability UEs (single subband) and advanced UEs (multiple subbands) within the same network infrastructure. The network entity is designed to dynamically adapt its configuration based on UE capabilities, ensuring broad device compatibility while maintaining the option to maximize network resource utilization when serving capable devices.
Data Source
AI summary
A method for wireless communication at a user equipment (UE) and related apparatus are provided. In the method, the UE reports to a network entity a capability associated with one downlink subband among multiple downlink subbands included in a downlink bandwidth part (BWP). The multiple downlink subbands correspond to a first time-domain resource. The first time-domain resource may be a subband full duplex (SBFD) symbol or an SBFD slot. The UE further communicates with the network entity using a selected downlink subband from the multiple downlink subbands for one or more time-domain resources including the first time-domain resource.