Wireless Coordination Area Partitioning for Edge User Scheduling
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Solution Overview
Problem
Current methods for determining coordination areas in wireless networks are either overly complex due to real-time user selection or limited in performance due to pre-defined cell coordination, leading to edge user coordination issues and increased scheduling complexity.
Innovation Solution
A method that partitions the coordination area into inner and outer areas based on antenna directions and base station locations, combining the inner and inward areas to form a new coordination area, thereby simplifying the partitioning process and reducing inter-area coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the network pre-partitions all coordination cells into coordination areas, then the simplicity of the system is improved, but the coordination performance is greatly limited because users cannot select coordination cells based on signal strength
Solution Approach 1:
The patent divides the coordination area into inner area and outer area, where the inner area uses pre-defined coordination cells for simplicity, while the outer area allows user-based coordination cell selection for improved performance. This segmentation resolves the contradiction by applying different coordination strategies to different regions.
Solution Approach 2:
The patent applies different coordination approaches to different regions: pre-defined coordination for inner area (simplicity) and user-based selection for outer area (performance). This local differentiation allows the system to optimize for simplicity where it matters less and for performance where it matters more.
2Reliability
If the user determines all coordination cells in real-time, then the coordination performance is improved, but the complexity of scheduling network resources and the workload of network information interaction increase significantly
Solution Approach 1:
The patent segments the coordination area into inner and outer areas, applying user-based real-time determination only to the outer area where it is most beneficial, while maintaining pre-defined coordination for the inner area. This reduces the overall scheduling complexity compared to applying user-based determination to all cells.
Solution Approach 2:
Instead of requiring user-based coordination cell determination for all cells (excessive action), the patent applies it only partially to the outer area (partial action), achieving improved performance where needed while avoiding unnecessary complexity elsewhere.
3Device complexity
If the coordination area is partitioned to restrict scheduling complexity, then the scheduling complexity is reduced to acceptable scope, but coordination area-edge users cannot coordinate with neighboring cells in other coordination areas, dampening performance
Solution Approach 1:
The patent segments the coordination area into inner and outer areas, with the outer area extending to the edges. This allows edge users in the outer area to access coordination cells from multiple coordination areas through user-based determination, maintaining performance while keeping scheduling complexity manageable through the inner/outer area segmentation.
Solution Approach 2:
The patent adds a spatial dimension by creating an outer area that extends to the boundaries of coordination areas. This dimensional expansion allows edge users to reach into neighboring coordination areas for coordination, resolving the isolation problem while the structured segmentation controls complexity.
4Reliability
If cells at coordination area edges are made overlapping cells of two coordination areas, then the edge effect is relieved to a certain extent, but interaction between different coordination areas still exists, coupling still exists, and scheduling complexity remains
Solution Approach 1:
The patent segments cells into inner and outer areas, with outer area cells potentially belonging to multiple coordination areas. This segmentation provides a structured way to handle edge effects while the clear division into inner/outer areas helps manage inter-area interactions and coupling.
Solution Approach 2:
The patent makes the coordination area boundaries dynamic by allowing outer area cells to be associated with multiple coordination areas based on user location and signal strength. This dynamic association relieves edge effects while the user-based determination mechanism provides a simple way to manage the resulting complexity.
Data Source
AI summary
The present invention relates to a wireless network, and more specifically, to a method and apparatus for partitioning a coordination area in a wireless network, the method comprising: obtaining antenna directions of respective cells, base station locations of respective cells, and scope of a coordination area within the wireless network; determining an initial coordination area based on the scope of the coordination area and the base station locations in respective cells; partitioning the initial coordination area into an inner area and an outer area; partitioning the outer area into an inward area and an outward area based on the antenna directions of cells within the outer area and the base station locations of cells within the outer area; and combining the inner area and the inward area within the outer area into a new coordination area. The method is simple and easy. It may solve a problem of coordination area edge caused by partitioning a coordination area and meanwhile avoid the association between coordination areas, thereby reducing the complexity of scheduling.