Interference Suppressed Signaling for Heterogeneous Network Resource Management
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Solution Overview
Problem
Current wireless network management systems lack provisions for signaling and managing interference suppressed information between Radio Base Stations (RBS) and Radio Network Controllers (RNC) in heterogeneous networks, leading to inadequate interference management and reduced network performance, especially in hotspots where low-power nodes interact with macro cells.
Innovation Solution
A method and apparatus that enable the signaling of interference suppressed information, such as interference suppressed load, neighbor cell interference, and noise floor, from network nodes to RNCs and RBSs, allowing for better radio resource management through interference management instructions like power control, admission control, and load balancing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If interference suppression techniques are deployed in heterogeneous networks with low-power nodes, then network capacity and coverage are improved, but interference management complexity increases due to interactions between cells
Solution Approach 1:
The patent implements feedback mechanisms where network nodes report interference suppressed information (such as interference levels, load conditions, and coverage metrics) to a central controller. The controller processes this feedback and dynamically adjusts resource allocation, power control, and admission control parameters to optimize network performance while managing interference in heterogeneous deployments.
Solution Approach 2:
The patent introduces an intermediary controller that mediates between low-power nodes and macro cells. This intermediary collects interference suppressed information from various nodes, performs centralized interference management calculations, and coordinates resource allocation across the heterogeneous network, thereby reducing the complexity at individual node level.
2Area of stationary object
If low-power nodes are deployed in outdoor environments for capacity enhancement, then network coverage and capacity are improved, but interference from macro cells increases
Solution Approach 1:
The patent applies local quality by enabling low-power nodes to operate with optimized transmit power levels and resource allocation specific to their local coverage areas. The interference suppressed information allows each node to adapt its transmission characteristics locally, maintaining coverage in targeted areas while minimizing interference impact on surrounding macro cells through localized resource management.
Solution Approach 2:
The patent implements dynamic power control and resource allocation where low-power nodes continuously adjust their transmit power and resource usage based on real-time interference suppressed information. This dynamic adaptation allows the network to optimize coverage in high-demand areas while automatically reducing interference when macro cell conditions change, creating a flexible response to varying network conditions.
3Ease of operation
If interference suppressed information is signaled between network nodes, then radio resource management is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential interference suppressed information elements needed for effective resource management (such as key interference metrics, load indicators, and coverage status) while filtering out redundant data. This selective extraction reduces signaling overhead by transmitting only the most critical information required for interference management decisions between network nodes.
Solution Approach 2:
The patent optimizes signaling by changing the parameter representation of interference suppressed information, such as using compressed formats, differential encoding, or threshold-based reporting. These parameter changes reduce the amount of data transmitted while preserving the essential information needed for radio resource management, thereby reducing signaling overhead without sacrificing management effectiveness.
Data Source
AI summary
The method and apparatus disclosed herein enable interference suppressed information (information about interference after interference suppression to be provided to the Radio Network Controller (RNC) and/or to surrounding Radio Base Stations (RBSs)), thereby providing better radio resource management for hot spots and/or allowing the RBSs to better understand their impact on surrounding cells. Generally, a network node in the wireless network signals interference suppressed information, e.g., an interference suppressed load or overload indicator, an interference suppressed neighbor cell interference, and/or an interference suppressed noise floor to a remote node in the wireless network to facilitate radio resource management. Further, a radio network controller in the wireless network may manage the interference in cells based on the interference suppressed information by generating an interference management instruction based on the interference suppressed information, and sending the interference management instruction to the radio base station to control one or more interference management settings, e.g., a power control setting, a load threshold, etc.