Interference Coordination Threshold Determination in Ultra-Dense Networks
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Solution Overview
Problem
In ultra-dense wireless networks, the random topology and high interference between access nodes lead to complex interference coordination challenges, particularly in determining the optimal threshold for radio resource management, which affects traffic performance.
Innovation Solution
A method and apparatus for determining a threshold for inter-network and inter-access node interference coordination by measuring interference levels, selecting a critical wireless link based on utility parameters, and dynamically adjusting the threshold based on coordination performance metrics across time windows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If network densification and universal resources reuse are implemented to increase capacity, then network capacity improves, but interference between wireless links increases
Solution Approach 1:
The patent dynamically adjusts the coordination threshold parameter based on current interference conditions and network state. By changing the threshold parameter adaptively rather than using a fixed value, the system can maintain effective interference coordination while supporting higher network density and capacity.
Solution Approach 2:
The patent implements a feedback mechanism where interference levels are continuously monitored and used to adjust the coordination threshold. The threshold determination apparatus receives interference level information and modifies the threshold accordingly, creating a closed-loop control system that responds to changing interference conditions in real-time.
2Ease of operation
If a fixed coordination threshold is used for interference coordination, then implementation is simple, but coordination performance is suboptimal due to varying interference conditions
Solution Approach 1:
The patent transitions from a static fixed threshold to a dynamic adaptive threshold that changes based on network conditions. The threshold determination apparatus continuously adjusts the coordination threshold according to measured interference levels and network state, allowing the system to adapt to varying interference conditions while maintaining reliable coordination performance.
Solution Approach 2:
The system performs self-optimization by automatically determining the appropriate coordination threshold based on its own measurements of interference levels and network state. The threshold determination apparatus uses internal feedback mechanisms to adjust the threshold without requiring external configuration or manual intervention.
3Object-affected harmful factors
If interference coordination is triggered frequently to manage interference, then interference management improves, but system complexity and overhead increase
Solution Approach 1:
By dynamically adjusting the coordination threshold parameter, the system can optimize the triggering conditions for interference coordination. An adaptive threshold allows the system to maintain effective interference management while reducing unnecessary coordination actions that would increase complexity and overhead.
Solution Approach 2:
The threshold determination apparatus acts as an intermediary that processes interference level information and translates it into appropriate coordination decisions. This intermediary layer simplifies the overall system by centralizing the decision-making logic for when to trigger coordination, reducing the complexity burden on individual network elements.
Data Source
AI summary
The present invention generally relates to wireless communication, more particularly, but not exclusively to, threshold determination for inter-network interference coordination and for inter-access node (AN) interference coordination. According to one aspect of the present invention there is provided a method for determining a threshold for inter-network interference coordination, on the basis of which it is determined whether radio resource shall be coordinated between a first wireless network and a second wireless network, the method comprising the steps of: receiving interference levels for a plurality of wireless links associated with one or more wireless communication devices within the first wireless network, said interference levels being attributed to the second wireless network; and obtaining the threshold based on the interference levels.