5G NR Resource Indication With Adaptive BWP-to-RBG Mapping
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Solution Overview
Problem
The 5G NR standard lacks a specified mapping relation between resource block group (RBG) sizes and bandwidth part (BWP) sizes, leading to high scheduling complexity due to varying terminal BWP sizes, and adopting a single RBG size limits scheduling flexibility.
Innovation Solution
A method for user equipment and network devices to select from multiple candidate mapping relationships, where different BWPs are mapped to either different or the same RBG sizes, allowing flexible resource allocation based on control information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different RBG sizes are adopted for different BWP sizes, then scheduling flexibility is improved, but base station scheduling complexity increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the RBG size parameter based on BWP size. The mapping relationships define different RBG sizes (1, 2, 4, or 8 resource blocks) corresponding to different BWP size ranges, allowing the system to adapt the resource allocation granularity to match the active bandwidth part, thereby achieving scheduling flexibility without requiring completely separate scheduling mechanisms
Solution Approach 2:
The patent implements universality by designing a unified scheduling framework that handles multiple BWP sizes through a single set of mapping relationships. The base station uses one universal scheduling algorithm that selects appropriate RBG sizes based on the configured BWP, rather than maintaining separate scheduling logic for each BWP size, thus reducing overall system complexity while preserving adaptability
2Device complexity
If a same RBG size is adopted for different BWP sizes, then base station scheduling complexity is reduced, but scheduling flexibility is greatly limited
Solution Approach 1:
The patent applies dynamics by making the RBG size configurable and adaptable rather than fixed. The system dynamically selects the appropriate RBG size based on the currently active BWP configuration, allowing the resource allocation granularity to change according to traffic requirements and bandwidth conditions, thus achieving both simplified scheduling (through unified mapping relationships) and maintained flexibility (through adaptive parameter selection)
3Adaptability or versatility
If multiple mapping relationships are configured, then adaptability to different BWP sizes is improved, but user equipment complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple mapping relationships between BWP sizes and RBG sizes before actual resource allocation occurs. The user equipment stores these mapping relationships and automatically selects the appropriate one based on the configured BWP, eliminating the need for real-time calculations or complex decision-making during scheduling, thus reducing operational complexity while maintaining adaptability
Data Source
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AI summary
Disclosed in the present invention are a resource indication method, user equipment (UE), a network device and a computer storage medium, the method comprising: selecting a target mapping relationship from at least two candidate mapping relationships; determining the size of a target resource block group according to the size range of a bandwidth part in the target mapping relationship; and allocating frequency domain resources according to the size of the target resource block group and first control information sent from a network side, wherein the at least two candidate mapping relationships at least comprise a first mapping relationship and a second mapping relationship, the size ranges of each set of bandwidth parts in the first mapping relationship are mapped to different resource block group sizes, and the size ranges of at least two sets of bandwidth parts in the second mapping relationship may be mapped to the same resource block group size.