Virtual Bandwidth Part Configuration for Single DCI Multi-Cell Scheduling
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently scheduling multiple bandwidth parts using a single downlink control information (DCI) in multi-cell environments, leading to increased DCI size and blind decoding complexity, which hampers dynamic spectrum sharing and resource allocation efficiency.
Innovation Solution
The implementation of a virtual bandwidth part (BWP) configuration allows for the scheduling of multiple bandwidth parts using a single DCI, reducing the overall DCI size and improving resource allocation efficiency by sharing parameters and using DCI field size compression, enabling efficient multi-cell scheduling and communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple bandwidth parts are scheduled using separate DCI messages, then scheduling flexibility and resource allocation precision are improved, but DCI overhead and blind decoding complexity increase
Solution Approach 1:
The patent combines multiple DCI messages into a single unified DCI structure that schedules multiple bandwidth parts simultaneously. This merging approach reduces the total number of DCI messages transmitted while maintaining the ability to allocate resources across multiple BWPs, thereby reducing DCI overhead without sacrificing scheduling flexibility
Solution Approach 2:
The unified DCI message is designed to perform multiple functions by scheduling multiple bandwidth parts within a single message structure. This multi-functional DCI can allocate resources across different BWPs, manage bandwidth part activations, and control multiple component carriers, replacing what would traditionally require multiple separate DCI messages
2Manufacturing precision
If multiple bandwidth parts are scheduled using separate DCI messages, then resource allocation precision is improved, but blind decoding complexity increases
Solution Approach 1:
By merging multiple DCI messages into a single unified DCI, the patent reduces the number of blind decoding operations the UE must perform. The unified DCI contains all necessary resource allocation information for multiple BWPs in one message, eliminating the need for the UE to separately decode multiple DCI messages while maintaining precise resource allocation
3Quantity of substance
If DCI size is reduced through parameter sharing, then DCI overhead is reduced, but scheduling flexibility may be compromised
Solution Approach 1:
The unified DCI structure implements local quality by allowing different levels of parameter specification for different bandwidth parts. Common parameters are shared across multiple BWPs to reduce DCI size, while BWP-specific parameters can be individually configured when needed, providing a balance between compression efficiency and scheduling flexibility
Solution Approach 2:
The patent employs parameter sharing and compression techniques where identical or similar parameters across multiple BWPs are represented once in the unified DCI rather than repeated for each BWP. This parameter change approach reduces DCI size while maintaining the ability to differentiate and schedule each BWP according to its specific requirements
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive downlink control information (DCI) that schedules a first communication on a first bandwidth part and a second communication on a second bandwidth part; determine one or more parameters for the first bandwidth part and the second bandwidth part based at least in part on the DCI and in accordance with a bandwidth part configuration for a virtual bandwidth part; and perform the first communication and the second communication based at least in part on the one or more parameters. Numerous other aspects are provided.