Cell Bandwidth Sharing with Dedicated BWPs and Dynamic Allocation
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Solution Overview
Problem
Existing wireless communication systems lack flexibility in sharing bandwidth between cells, limiting the ability to adapt to diverse service requirements and optimize spectrum usage.
Innovation Solution
Implementing a system 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 providing real-time indications for bandwidth part usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bandwidth parts are shared between cells to improve spectrum utilization, 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 assigned specific non-overlapping BWPs. This segmentation allows different cells to utilize different portions of the spectrum simultaneously, improving overall spectrum usage efficiency while preventing interference through clear resource separation.
Solution Approach 2:
The system dynamically assigns and reassigns bandwidth parts to different cells based on traffic demands and operator policies. This dynamic allocation enables the network to adapt to changing conditions, optimizing spectrum utilization while maintaining interference-free operation through real-time resource management.
2Reliability
If dedicated bandwidth parts are assigned to each cell to reduce interference, then signal quality is improved, but spectrum utilization efficiency deteriorates
Solution Approach 1:
Each bandwidth part is configured with universal parameters that can be applied across multiple cells. The system defines a set of BWPs that can be selectively assigned to different cells based on needs, allowing the same bandwidth structure to serve multiple purposes and multiple cells, thereby improving spectrum utilization while maintaining signal quality through proper assignment.
Solution Approach 2:
The system changes the assignment parameters of bandwidth parts dynamically. By modifying which BWPs are assigned to which cells based on traffic conditions and operator policies, the system can transition between dedicated and shared configurations, optimizing both signal quality and spectrum utilization according to current network conditions.
3Adaptability or versatility
If bandwidth parts are reconfigured in real-time to adapt to traffic demands, then adaptability is improved, but system complexity increases
Solution Approach 1:
The system performs preliminary configuration by defining multiple bandwidth parts with specific parameters in advance. These pre-configured BWPs are then assigned to cells based on current needs, eliminating the need for complex real-time reconfiguration. The preliminary setup simplifies runtime management while maintaining high adaptability through flexible assignment.
Solution Approach 2:
The system uses feedback mechanisms to monitor traffic conditions and adjust bandwidth part assignments accordingly. By continuously monitoring network state and applying feedback-based reassignment, the system achieves high adaptability to changing demands while keeping complexity manageable through automated, rule-based decision-making rather than complex manual configuration.
Data Source
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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.