Spectrum Resource Configuration for LTE-NR Interference Avoidance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The resource conflict between LTE and NR cells in spectrum sharing scenarios leads to performance loss due to LTE cells avoiding NR resources, causing channel estimation distortion in LTE terminals.
Innovation Solution
A resource configuration method that allocates dedicated frequency domain resources for NR cells, ensuring these resources are not interfered with by LTE cells, and vice versa, using an access network device to manage bandwidth configurations and signal allocations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LTE cell resources avoid NR cell resources (SSB), then NR cell measurement is enabled, but LTE terminal demodulation performance deteriorates due to channel estimation distortion
Solution Approach 1:
The patent segments the frequency domain resources into shared resources and dedicated resources for NR cells. By allocating specific frequency domain resources exclusively for NR SSB transmission, the system prevents resource conflicts between LTE CRS and NR SSB, thereby maintaining both NR cell measurement reliability and LTE terminal demodulation performance without mutual interference
Solution Approach 2:
The patent applies local quality by configuring specific frequency domain resources with dedicated properties for NR SSB transmission. These dedicated resources have the characteristic of being exclusively allocated to NR cells, creating a localized resource pool that ensures NR measurement reliability without affecting LTE terminal operations in other frequency regions
2Manufacturing precision
If NR cell resources avoid LTE cell resources (CRS), then LTE terminal demodulation performance is maintained, but NR cell resource utilization decreases
Solution Approach 1:
The patent segments frequency domain resources into shared and dedicated portions, allowing NR cells to utilize dedicated resources for SSB transmission without avoiding LTE CRS resources. This segmentation enables NR cells to maintain high resource utilization while LTE terminals continue to operate normally on shared resources
Solution Approach 2:
The patent resolves the resource conflict by introducing a new dimension of resource allocation - dedicated frequency domain resources specifically for NR cells. This additional dimensional space allows both LTE and NR cells to operate simultaneously without mutual interference, maximizing overall resource utilization
3Productivity
If spectrum sharing is implemented between LTE and NR on the same carrier bandwidth, then spectrum resource utilization is improved, but resource conflicts cause performance loss
Solution Approach 1:
The patent segments the shared spectrum into frequency domain resources that are either shared between LTE and NR or dedicated to NR cells. This segmentation allows the system to maintain high spectrum resource utilization while preventing resource conflicts that would otherwise cause terminal device performance degradation
Solution Approach 2:
The patent introduces dedicated frequency domain resources as an intermediary mechanism that mediates between LTE and NR resource requirements. This intermediary resource pool allows both systems to coexist on the same carrier bandwidth without direct resource conflicts, maintaining both high utilization and reliable terminal performance
Data Source
AI summary
Embodiments of this application provide a resource configuration method and apparatus, and relate to the field of communication technologies, to resolve a problem that demodulation performance of a terminal device in a long term evolution (LTE) cell deteriorates when resources for the LTE cell avoid resources for a new radio (NR) cell. A solution for resolving this problem may include obtaining, by an access network device, first configuration information. The first configuration information includes a bandwidth range of a NR cell, and the bandwidth range of the NR cell includes a dedicated frequency domain resource of the NR cell and a frequency domain resource shared by the NR cell and a LTE cell. The solution further includes sending, by the access network device, the first configuration information to a terminal device in the NR cell.