Dynamic Interference Measurement Configuration in 5G Networks
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Solution Overview
Problem
Current cellular communication systems, particularly in LTE/LTE-A and 5G networks, face challenges in dynamically configuring interference measurement resources to adapt to rapidly changing conditions on radio links, leading to static link adaptation and inefficient interference management.
Innovation Solution
The implementation of a dynamic interference configuring unit and dynamic interference measuring unit in both base stations and terminal devices, which utilize mixed and overlap type configurations for interference measurement resources, allowing for flexible configuration and real-time adaptation of interference measurement settings, including zero power resource elements and overlapping configurations, to effectively estimate and report interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If link adaptation uses static CQI reporting with outer loop link adaptation, then implementation complexity is reduced, but adaptability to rapidly changing radio conditions deteriorates
Solution Approach 1:
The patent introduces dynamic interference measurement resource configuration where the network can flexibly allocate and reconfigure interference measurement resources based on current radio conditions. This allows the system to adapt interference measurement settings in real-time, transforming the static link adaptation mechanism into a dynamic one that responds to changing channel quality and interference levels without requiring complete redesign of the CQI reporting framework
Solution Approach 2:
The patent changes the configuration parameters of interference measurement resources dynamically, including adjusting the number, position, and density of interference measurement reference signals based on traffic load, channel conditions, and interference levels. This parameter adaptation enables the system to optimize measurement accuracy for different scenarios while maintaining backward compatibility with existing link adaptation mechanisms
2Device complexity
If interference measurement resources are configured statically, then device complexity is reduced, but measurement precision under varying conditions deteriorates
Solution Approach 1:
The patent implements dynamic configuration of interference measurement resources where the network can adjust measurement resource allocation based on actual interference conditions and traffic patterns. This dynamic approach allows the system to concentrate measurement resources when interference is high and reduce them when conditions are favorable, maintaining high measurement precision across varying conditions without requiring permanently complex configuration structures
Solution Approach 2:
The patent applies different interference measurement configurations to different spatial locations, user groups, or service types based on local interference characteristics. This allows optimized measurement precision for specific scenarios (e.g., cell edge users experiencing high interference) without requiring complex configurations system-wide, achieving high measurement accuracy where needed while keeping overall system complexity manageable
3Adaptability or versatility
If dynamic interference measurement configuration is implemented, then adaptability to radio conditions is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic interference measurement configuration through parameter adjustments rather than structural redesign. The network can modify parameters such as measurement resource density, frequency location, and time allocation based on current conditions, achieving high adaptability through flexible parameter control while maintaining a relatively simple underlying measurement framework that devices can implement with standard processing capabilities
4Measurement precision
If interference measurement resources are increased, then measurement precision is improved, but use of energy increases
Solution Approach 1:
The patent implements dynamic adjustment of interference measurement resource allocation where the network can increase measurement resources during periods of high interference or critical service requirements, and reduce resources during favorable conditions. This temporal dynamics allows the system to achieve high measurement precision when needed while conserving energy during normal operation, balancing accuracy requirements with energy efficiency through adaptive resource management
Data Source
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AI summary
A flexible way to configure interference measurements is achieved by configuring a terminal device for interference measurement resources with a configuration comprising at least a first part indicating interference resources that may overlap with one or more reference symbols, and a second part configuration indicating a type of the overlap.