Resource Block Group Allocation for Overlapping Bandwidth Parts
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Solution Overview
Problem
In the fifth-generation wireless access system standard New Radio (NR), efficiently allocating or re-allocating uplink or downlink resources to terminal devices is challenging due to the overlapping bandwidth parts, leading to inefficiencies in resource configuration.
Innovation Solution
A communication method where a network device determines and sends resource indication information to a terminal device, allowing it to determine the index information of resource blocks, thereby enabling efficient allocation and re-allocation of resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple bandwidth parts are configured to overlap in frequency domain, then resource allocation flexibility is improved, but resource allocation complexity increases
Solution Approach 1:
The patent segments the frequency domain resources by introducing a resource block group (RBG) structure that divides the bandwidth into multiple non-overlapping RBG sets. Each RBG set is independently allocated to different terminal devices, preventing resource conflicts while maintaining allocation flexibility. This segmentation resolves the contradiction by organizing overlapping BWPs into discrete, manageable units.
Solution Approach 2:
The patent introduces an intermediary layer (RBG set and resource indication information) between the overlapping BWPs and terminal device allocations. The network device uses resource indication information to selectively indicate which RBG sets are available for allocation, mediating the complex overlapping BWP structure into simple, conflict-free allocation units for terminals.
2Productivity
If resource blocks are allocated in overlapped locations of multiple BWPs, then resource utilization is improved, but resource conflict risk increases
Solution Approach 1:
The patent segments overlapped frequency resources into distinct RBG sets that are independently managed. By dividing the overlapping BWP regions into discrete RBG units and allocating them through selective indication, the system achieves high resource utilization while preventing conflicts through clear separation of allocated and unallocated resources.
Solution Approach 2:
The resource indication information mechanism allows the system to self-manage resource allocation by automatically indicating which RBG sets are available for each terminal. This self-service approach ensures that resource conflicts are prevented through systematic indication rather than manual coordination, maintaining reliability while enabling efficient utilization.
3Speed
If resource indication information is sent to terminal device, then resource allocation speed is improved, but signaling overhead increases
Solution Approach 1:
The patent applies partial action by sending resource indication information only when necessary - specifically, only when RBG sets need to be selectively indicated or re-allocated. The indication is partial rather than comprehensive, covering only the relevant RBG sets rather than all possible resources, thus reducing signaling overhead while maintaining allocation speed.
Solution Approach 2:
The patent changes the parameter of resource indication from continuous frequency domain descriptions to discrete RBG set indicators. This parameter transformation reduces the amount of signaling required by representing resource allocations as selections from a predefined set of RBG groups rather than detailed frequency coordinate specifications.
Data Source
AI summary
In the method of present application, a terminal device obtains resource indication information. The resource indication information indicates frequency domain resources of a data channel of a terminal device. The resource indication information comprises S bits, where S is a positive integer. The terminal device determines the frequency domain resources of the data channel of the terminal device based on the resource indication information.