Multi-BWP Data Channel Scheduling for Fragmented Spectrum
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently utilizing fragmented and scattered spectrum bands, leading to inefficiencies in throughput and coverage, particularly in 5G and anticipated 6G networks, due to fragmented bandwidth and the need for more flexible and spectral/power-efficient spectrum utilization.
Innovation Solution
Implementing joint scheduling mechanisms across multiple bandwidth parts (BWPs) for both downlink and uplink data transmissions, allowing simultaneous scheduling of physical channels across non-overlapping BWPs with unified control signaling, including DCI formats that support various field types for efficient resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If spectrum bands are fragmented and scattered, then spectrum availability increases, but spectral efficiency and throughput deteriorate
Solution Approach 1:
The patent combines multiple scattered bandwidth parts (BWPs) into a unified carrier for joint scheduling. The network device schedules PDSCH/PUSCH transmissions across multiple BWPs using a single DCI message, merging the control overhead of separate schedulings into one unified operation, thereby improving spectral efficiency while utilizing fragmented spectrum resources
Solution Approach 2:
The DCI format is designed with universal fields that can indicate resource allocations across multiple BWPs simultaneously. The frequency domain resource assignment field and time domain resource assignment field are configured to work across different BWP configurations, enabling a single control message to manage multiple frequency resources efficiently
2Adaptability or versatility
If multiple spectrum bands are scheduled separately, then resource allocation flexibility improves, but control overhead increases
Solution Approach 1:
The patent merges multiple separate DCI messages into a single unified DCI that schedules transmissions across multiple BWPs. The unified DCI contains frequency domain resource assignment fields and time domain resource assignment fields that collectively indicate resource allocations for multiple BWPs, reducing control overhead while maintaining allocation flexibility
Solution Approach 2:
The DCI structure is segmented into fields that can independently indicate resource allocations for different BWPs. The frequency domain resource assignment is divided into multiple indication fields, each corresponding to specific BWPs, allowing flexible resource allocation while maintaining a unified control structure
3Area of stationary object
If intra-band multi-carrier operation is implemented, then bandwidth utilization improves, but system complexity increases
Solution Approach 1:
The joint scheduling mechanism provides a universal control approach that works across multiple BWPs within the same band. The DCI format and scheduling procedures are designed to handle intra-band multi-carrier operations through a unified framework, reducing system complexity compared to separate scheduling mechanisms while improving bandwidth utilization
Data Source
AI summary
This disclosure discloses a joint scheduling of data channel on multiple bandwidth parts. The disclosure provides an apparatus comprising interface circuitry; and processor circuitry coupled with the interface circuitry. The processor circuitry is to: monitor a physical downlink control channel (PDCCH) on a bandwidth part (BWP) via the interface circuitry; decode a downlink control information (DCI) in the PDCCH; and receive, in response to at least one field in the DCI indicating to schedule multiple physical downlink shared channels (PDSCHs) and/or physical uplink shared channels (PUSCHs) on a plurality of concurrently active BWPs, the PDSCHs on the plurality of concurrently active BWPs via the interface circuitry. Other embodiments are also disclosed and claimed.