Interleaved VRB to PRB Mapping for NR Resource Allocation
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Solution Overview
Problem
Current wireless communication systems, particularly in new radio (NR) technologies, face challenges in efficiently mapping virtual resource blocks (VRBs) to physical resource blocks (PRBs), leading to suboptimal resource allocation and interference issues, especially in diverse service scenarios requiring different latency and reliability standards.
Innovation Solution
The implementation of interleaved mapping techniques that map consecutive VRBs to consecutive PRBs, utilizing interleavers specific to devices or bandwidth parts, and configuring higher layer signaling for resource allocation, addresses the challenge by ensuring efficient resource allocation and minimizing collisions across different service types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional VRB to PRB mapping is used, then resource allocation is simple, but resource allocation efficiency is suboptimal and interference issues occur
Solution Approach 1:
The resource blocks are segmented into interleaving units of N consecutive VRBs, which are then mapped to N consecutive PRBs. This segmentation approach optimizes resource allocation by allowing independent handling of resource block groups, improving spectral efficiency and reducing interference while maintaining manageable complexity through structured organization.
2Reliability
If resource allocation is optimized for diverse service scenarios, then service quality improves, but interference and collisions increase
Solution Approach 1:
Different interleaving patterns and mapping configurations are applied to different service scenarios (eMBB, mmW, mMTC, URLLC) based on their specific requirements. This local quality approach allows each service type to receive optimized resource allocation tailored to its latency and reliability needs, improving service quality while the structured mapping prevents interference through systematic resource separation.
Data Source
AI summary
Certain aspects of the present disclosure relate to methods and apparatus mapping virtual resource blocks (VRBs) to physical resource blocks (PRBs) and using the mapping in wireless communications, for example, in new radio (NR) technologies. An exemplary method includes determining a first interleaved mapping that maps a first interleaving unit of N consecutive first virtual resource blocks (VRBs) to N consecutive first physical resource blocks (PRBs), wherein each first PRB comprises a set of frequency resources during a period, transmitting a first grant allocating the first interleaving unit of first VRBs to a first user equipment (UE), and communicating with the first UE via the first PRBs mapped to the first VRBs of the first interleaving unit.