Cell PRB Allocation Schemes for Interference-Aware Frequency Use
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Solution Overview
Problem
In cellular networks, overlapping frequency resource allocations among multiple devices and towers lead to communication collisions, interference, and delayed transmissions, reducing network efficiency and requiring re-sending of data.
Innovation Solution
Implementing dynamic physical resource block (PRB) allocation strategies and schemes across cells, assigning different PRB allocation schemes to cells to reduce interference and improve transmission efficiency by optimizing PRB usage based on device capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple cell towers use the same frequency resource allocation strategy, then device compatibility and ease of operation are improved, but interference and data collisions increase
Solution Approach 1:
The patent assigns different PRB allocation schemes to different cells based on their local characteristics and interference environments. Each cell can use customized allocation strategies (e.g., different starting PRB indices, different allocation directions) while maintaining compatibility through standardized scheme formats, thus reducing interference without sacrificing ease of operation.
Solution Approach 2:
The patent introduces dynamic PRB allocation where cells can switch between different allocation schemes based on current network conditions, traffic patterns, and interference levels. This dynamic adaptation allows the system to optimize for reduced interference while maintaining operational simplicity through automated scheme selection.
2Object-generated harmful factors
If dynamic PRB allocation strategies are implemented across multiple cells, then interference is reduced, but device complexity and system configuration complexity increase
Solution Approach 1:
The patent segments the frequency resource space into multiple PRB groups and defines separate allocation schemes for different segments. Each scheme operates independently on its designated PRB segments, which simplifies the management of complexity by dividing the overall allocation problem into manageable, non-overlapping parts.
Solution Approach 2:
The patent creates a universal framework where a limited set of standardized PRB allocation schemes can be applied across different cells and network conditions. These multi-functional schemes can serve various purposes (interference reduction, load balancing, edge user support) depending on how they are configured and assigned, reducing the need for entirely separate solutions for each problem.
3Productivity
If cells use different PRB allocation schemes, then network bandwidth utilization improves, but the difficulty of detecting and measuring allocation status increases
Solution Approach 1:
The patent incorporates feedback mechanisms where cells report their PRB allocation status, interference levels, and performance metrics to a central controller or neighboring cells. This feedback enables automated detection and measurement of allocation status, allowing the system to monitor and adjust multiple allocation schemes without proportionally increasing monitoring complexity.
Solution Approach 2:
The patent establishes predetermined PRB allocation schemes that are configured in advance with known characteristics and parameters. These pre-defined schemes include built-in identification markers and structured formats that facilitate easier detection and measurement compared to entirely dynamic, ad-hoc allocations, reducing the complexity of monitoring while maintaining high bandwidth utilization.
Data Source
AI summary
Systems and methods are described herein for employing dynamic physical resource block allocation strategies and schemes among a plurality of wireless network cells. A plurality of physical resource block allocation strategies are generated for the plurality of cells. A plurality of allocation schemes are then generated for the plurality of cells, wherein each separate allocation scheme of the plurality of allocation schemes defines a different utilization procedure for the plurality of physical resource block allocation strategies. Separate allocation schemes are assigned to separate cells. Each cell utilizes its assigned allocation scheme to allocate physical resource blocks to user devices.