Wireless Scheduling Apparatus for Coordinated Transmission Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless network systems face challenges in increasing the number of transmission points performing coordinated control due to limitations in processing time and radio wave interference across multiple areas, making it difficult to apply coordinated radio resource management effectively.
Innovation Solution
A scheduling apparatus that divides the communicable area into multiple areas, generates candidate patterns of transmission points and user terminals for each area, calculates evaluation values, and shares optimal combination patterns to calculate a transmission weight matrix for the entire area, thereby extending the coordinated range and reducing radio wave interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of transmission points performing coordinated control is increased, then wireless throughput is improved, but processing time required for identification of optimal combination pattern increases
Solution Approach 1:
The patent divides the communication area into multiple areas (first area, second area, third area, etc.) and performs coordinated control separately in each area. This segmentation reduces the complexity of processing by limiting the scope of combination pattern generation and evaluation to smaller sub-regions, thereby reducing processing time while still improving overall wireless throughput through coordinated control across multiple transmission points.
2Area of stationary object
If the number of transmission points performing coordinated control is increased, then coordinated range is extended, but radio wave interference from outside coordinated range cannot be suppressed
Solution Approach 1:
The patent segments the communication area into multiple distinct areas and performs coordinated control independently in each area. This allows the system to extend the coordinated range to cover more transmission points while managing radio wave interference locally within each area, preventing interference from outside the coordinated range from affecting the system.
Solution Approach 2:
The patent introduces a scheduling apparatus that acts as an intermediary to manage and coordinate the transmission points. This scheduling apparatus receives combination pattern information from each area, evaluates the overall impact including interference from outside coordinated ranges, and generates a final combined combination pattern that suppresses radio wave interference while extending the coordinated range.
3Manufacturing precision
If combination pattern generation and evaluation is performed for all transmission points, then optimal combination pattern is identified, but processing cannot be completed within scheduling cycle
Solution Approach 1:
The patent divides the set of transmission points into multiple areas and performs combination pattern generation and evaluation separately in each area. This segmentation reduces the computational complexity and processing time required to identify optimal combination patterns, allowing the system to complete processing within the scheduling cycle while still achieving optimal results through coordinated control across all areas.
Data Source
AI summary
A scheduling apparatus includes: a division control device configured to divide an entire communicable area into a plurality of areas; a combination generation device (12-1 to 12-N) configured to generate candidate patterns of combinations of transmission points and user terminals for each area; a combination evaluation device (13-1 to 13-N) configured to calculate evaluation values of candidate patterns for each area; an optimal combination holding device (15-1 to 15-N) configured to hold an optimal combination pattern among candidate patterns for each area; a calculation result sharing device configured to output an evaluation value of an optimal combination pattern to the combination evaluation device (13-1 to 13-N) for sharing with the areas as shared information; and an overall transmission weight matrix calculation device configured to calculate a transmission weight matrix for an entire communicable area based on a result obtained by combining optimal combination patterns of the areas.