Cell Bandwidth Sharing Through Dynamic BWP Assignment
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Solution Overview
Problem
Existing communication systems lack flexibility in sharing bandwidth between cells, limiting the ability to adapt to diverse service requirements and optimize spectrum usage.
Innovation Solution
A system is introduced that configures cells with a transmission bandwidth configuration comprising dedicated and shared bandwidth parts, allowing non-overlapping assignment of bandwidth parts to cells based on traffic and operator needs, and provides real-time indications for bandwidth part usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bandwidth parts are shared between cells with overlapping configurations, then spectrum usage efficiency is improved, but interference between cells increases
Solution Approach 1:
The transmission bandwidth is segmented into multiple bandwidth parts (BWPs), where each cell is configured with specific BWPs from a shared pool. The network can assign different BWPs to different cells dynamically, allowing spectrum sharing while maintaining orthogonality within assigned resources. This segmentation enables efficient spectrum utilization without causing interference between cells.
2Object-generated harmful factors
If dedicated bandwidth parts are assigned to each cell, then interference between cells is reduced, but spectrum usage efficiency deteriorates
Solution Approach 1:
A pool of bandwidth parts is created that can be universally assigned to multiple cells based on demand. The same BWP resources in the pool can serve different cells at different times or simultaneously for different users, enabling the spectrum resource to fulfill multiple functions and serve multiple purposes, thereby improving overall spectrum efficiency while maintaining controlled interference through proper assignment.
3Device complexity
If bandwidth configuration is fixed per cell, then system complexity is reduced, but adaptability to diverse service requirements deteriorates
Solution Approach 1:
The bandwidth part assignment is made dynamic rather than fixed. The network can reassign BWPs from the shared pool to different cells based on real-time traffic conditions, service requirements, and channel states. This dynamic allocation mechanism allows the system to adapt to diverse service requirements (e.g., eMBB, uRLLC, mMTC) while maintaining a relatively simple configuration framework through standardized BWP definitions and assignment procedures.
Data Source
AI summary
To enable two or more cells to dynamically share part of transmission bandwidth, the two or more cells are configured with a transmission bandwidth configuration per a cell, a transmission bandwidth configuration of a cell comprising a first bandwidth part dedicated for the cell in the transmission bandwidth and at least one second bandwidth part comprising transmission resources from a shared bandwidth section in the transmission bandwidth, wherein at least one second bandwidth part of the cell overlaps with at least one second bandwidth part of another cell. Non-overlapping bandwidth parts are assigned to the two or more cells according to transmission bandwidth configurations of the two or more cells; and at least an indication of the bandwidth part(s) assigned to a cell is transmitted to the corresponding cell, to be used for communication in the cell.