Distributed DL CoMP Scheduling for Heterogeneous Cellular Networks

The patent segments the frequency spectrum into different resource blocks and divides them into multiple subsets. Each cell in the heterogeneous network is assigned specific subsets, preventing full frequency reuse while maintaining adequate throughput. This segmentation approach allows coordinated scheduling where macro cells and small cells use different resource block subsets, thereby reducing co-channel interference while preserving cell throughput performance.

The patent implements a distributed scheduling architecture where each cell autonomously performs scheduling decisions based on locally available information about resource block assignments in other cells. Instead of requiring complex centralized coordination, each cell's scheduler independently identifies and avoids interfering with resource blocks used by other cells, achieving DL CoMP interference reduction through self-service mechanisms that minimize coordination overhead and device complexity.

The patent applies local quality by assigning different resource block subsets to different cells based on their specific characteristics and interference relationships. Macro cells and small cells have different assigned subsets, creating localized frequency reuse patterns. This allows spectrum efficiency to be improved through coordinated sharing while maintaining local quality control that prevents inter-cell interference, as each cell's resource allocation is optimized for its specific environment and interference profile.