BWP RBG Size Mapping for DCI Blind Detection
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Solution Overview
Problem
The high complexity of Downlink Control Information (DCI) blind detection in 5G communication systems due to varying resource allocation region sizes for different Bandwidth Parts (BWP) with different bandwidths is not effectively addressed by existing technologies.
Innovation Solution
The Base Station (BS) sends indication information to establish a corresponding relationship between Bandwidth Part (BWP) sizes and Resource Block Group (RBG) sizes, ensuring valid bits in resource allocation regions are approximate, thereby reducing DCI message blind detection complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different RBG size values are used for BWPs with different BWs, then resource allocation can be optimized for each bandwidth, but DCI blind detection complexity increases
Solution Approach 1:
The patent changes the parameter of RBG size from being variable across different BWPs to being unified across all BWPs. Specifically, it sets the RBG size to be the same for all BWPs regardless of their bandwidth, which simplifies the DCI format and reduces blind detection complexity while maintaining resource allocation flexibility through other means such as resource indication value (RIV) encoding.
2Adaptability or versatility
If resource allocation regions of different sizes are used for different BWPs, then bandwidth-specific resource allocation is achieved, but valid bits in DCI messages vary significantly
Solution Approach 1:
The patent applies universality by making the RBG size configuration applicable to all BWPs uniformly. The same RBG size value is used across different bandwidth parts, creating a universal resource allocation structure that simplifies DCI message design. This allows the system to handle different bandwidths with a consistent RBG sizing approach, reducing the variability in DCI message structures.
3Device complexity
If RBG sizes are standardized across all BWPs, then DCI blind detection complexity is reduced, but fine-grained resource allocation for different bandwidths is limited
Solution Approach 1:
The patent introduces dynamics by allowing the RBG size to be configurable and changeable through higher-layer signaling (RRC configuration). While the RBG size is unified across BWPs for a given configuration, it can be dynamically adjusted by reconfiguring the BWP parameters. This enables the system to adapt to different resource allocation requirements while maintaining the simplification benefits of unified RBG sizing during operation.
Data Source
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AI summary
The embodiments of the present application disclose resource allocation indication and receiving methods and devices. The resource allocation indication method includes that: a Base Station (BS) sends first indication information, wherein the first indication information is configured to indicate an activated Bandwidth Part (BWP) message and the activated BWP message at least includes BWP Bandwidth (BW) information; and the BS sends second indication information, wherein the second indication information is configured to indicate one or more groups of first-level Resource Block Group (RBG) sizes, each group of first-level RBG sizes includes multiple first-level RBG sizes, and each first-level RBG size corresponds to different BWP BWs, wherein there is a corresponding relationship between the first-level RBG size and different BWP BWs.