VRB to PRB Resource Mapping Interleaving Matrix
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In air interface systems, there is a lack of assurance that data mapped to virtual resource blocks (VRBs) is correctly transmitted on physical resource blocks (PRBs) due to the existing resource mapping methods.
Innovation Solution
A resource mapping method that involves writing physical resource block groups into an interleaving matrix with null values inserted at specific intersections, allowing for correct mapping of VRBs to PRBs by sorting and interleaving them, ensuring accurate transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is mapped to virtual resource blocks (VRBs) and transmitted on physical resource blocks (PRBs) using existing resource mapping methods, then resource allocation can be performed, but it cannot be ensured that the data mapped to the VRB is correctly transmitted on the PRB
Solution Approach 1:
The patent applies preliminary action by pre-establishing a correspondence relationship between virtual resource blocks (VRBs) and physical resource blocks (PRBs) before data transmission. The network device determines this mapping relationship in advance and notifies the terminal, enabling the terminal to correctly map data to PRBs based on the pre-determined correspondence, thereby ensuring transmission correctness without increasing system complexity
Solution Approach 2:
The patent implements feedback by having the network device notify the terminal of the determined VRB-PRB mapping relationship through downlink control information. This feedback mechanism ensures that both the network device and terminal have consistent understanding of the resource mapping, enabling correct data transmission and reception while maintaining system reliability
2Adaptability or versatility
If resource allocation is performed based on virtual resource blocks (VRBs) with mapping to physical resource blocks (PRBs), then flexibility in resource management is achieved, but accuracy in ensuring correct data transmission is compromised
Solution Approach 1:
The patent uses feedback by having the network device determine the VRB-PRB mapping relationship and notify the terminal through downlink control information. This ensures both ends have consistent mapping information, maintaining both flexibility in resource allocation and accuracy in data transmission
Solution Approach 2:
The patent introduces an intermediary mechanism through the downlink control information that carries the mapping relationship between VRBs and PRBs. This intermediary ensures accurate transmission of mapping information from the network device to the terminal, maintaining mapping accuracy while preserving the flexibility of virtual resource block-based resource allocation
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Embodiments of this application relate to the field of communications technologies, and provide a resource mapping method and a device, to ensure that data mapped to a VRB is correctly transmitted on a PRB. A specific solution is as follows: A network device writes n physical resource block groups into an interleaving matrix row by row, where N null values are inserted into intersections between the first row and the last N columns of the interleaving matrix or intersections between the last row and the first N columns of the interleaving matrix, n is a positive integer, and N is a natural number; reads the n physical resource block groups from the interleaving matrix column by column, where the n read physical resource block groups are mapped to n virtual resource block groups; and determines, based on the n physical resource block groups mapped to the n virtual resource block groups, physical resource blocks mapped to virtual resource blocks in the n virtual resource block groups. The embodiments of this application are used for resource mapping.