5G Resource Allocation Using Interleaving Regions to Prevent VRB Collisions
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Solution Overview
Problem
Resource congestion and collision occur in communications systems when virtual resource blocks (VRBs) indicated to different terminal devices are mapped to physical resource blocks (PRBs) in fifth-generation radio access systems, due to overlapping bandwidth parts allocated by the network device.
Innovation Solution
The system bandwidth is divided into fixed interleaving regions, allowing the network device to indicate the type of virtual resource units more conveniently, thereby avoiding resource congestion and collision by mapping virtual resource units to physical resource units within these regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If virtual resource blocks are mapped to physical resource blocks using conventional methods in 5G systems, then resource allocation can be performed, but resource congestion and collision occur when bandwidth parts allocated to different terminal devices overlap
Solution Approach 1:
The system bandwidth is divided into multiple interleaving regions, and virtual resource blocks are further segmented into different types (first type and second type) with distinct mapping rules. This segmentation allows different terminal devices to use different mapping strategies, preventing resource congestion and collision in overlapping bandwidth parts while maintaining efficient resource allocation.
2Quantity of substance
If bandwidth parts are allocated to multiple terminal devices, then system capacity increases, but resource congestion and collision occur due to overlapping allocations
Solution Approach 1:
Different terminal devices are assigned different local mapping rules for virtual resource blocks based on their specific bandwidth part allocations. Terminal devices with overlapping bandwidth parts use different VRB types (first type or second type) with different mapping behaviors, allowing simultaneous service of multiple devices without resource congestion or collision.
Data Source
AI summary
Example resource allocation methods and apparatus are described to resolve a problem of resource congestion and collision occurring in a communications system when virtual resource blocks (VRBs) scheduled for different terminal devices are mapped to physical resource blocks (PRBs). In one example method, system bandwidth of the communications system is divided into a plurality of fixed interleaving regions. Therefore, a network device can indicate a type of a virtual resource unit in a form of a frequency domain range occupied by one interleaving region. Using the foregoing solution can enable the network device to set the type of the virtual resource unit more conveniently.