Base Station Interference Coordination Per Network Slice
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Solution Overview
Problem
Conventional interference coordination methods in 5G NR systems, which consider physical resource blocks or subframes, are inadequate as they do not account for network slicing, leading to issues such as incorrect almost blank subframe information and inefficient resource management, particularly affecting handover and load balancing across slices.
Innovation Solution
Implementing interference coordination, mobility robustness optimization, and load balancing on a slice basis by exchanging slice-specific information between base stations, including slice IDs, interference coordination data, and resource status updates to manage radio resources and optimize handovers according to specific service requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional interference coordination methods are used on a physical resource block or subframe basis, then the system maintains simplicity in resource management, but it fails to account for network slicing requirements leading to incorrect almost blank subframe information and inefficient resource allocation
Solution Approach 1:
The interference coordination mechanism is segmented by slice ID, allowing different interference coordination parameters to be applied to different network slices. The base station receives and stores interference coordination information per slice, enabling slice-specific resource management while maintaining the overall coordination framework
Solution Approach 2:
The patent introduces a new dimension of slice ID to the traditional interference coordination approach. Instead of coordinating interference only on physical resource blocks or subframes, the system now coordinates interference across multiple dimensions including slice identification, enabling multi-tenant network slicing while maintaining interference management
2Reliability
If slice-specific interference coordination information is exchanged between base stations, then accurate interference coordination per slice is achieved, but the signaling overhead and processing complexity increase
Solution Approach 1:
The interference coordination information structure is designed to be universal across multiple slices. A single information exchange mechanism handles coordination for multiple slices simultaneously, reducing redundant signaling. The base station processes and stores coordination information in a unified structure that accommodates multiple slice IDs and their respective parameters
3Ease of operation
If interference coordination is performed without slice awareness, then the system operates with simpler procedures, but handover and load balancing performance deteriorate across different network slices
Solution Approach 1:
The patent applies local quality by configuring different interference coordination parameters for different slices based on their specific requirements. Each slice can have customized almost blank subframe patterns, resource block allocations, and coordination strategies tailored to its service type, while the overall system maintains unified management through slice ID-based organization
Data Source
AI summary
Provided are a method for a base station performing interference coordination in a wireless communication system, and a device supporting same. The method may comprise the steps of: receiving slice IDs from a neighboring base station; receiving interference coordination information per slice from the neighboring base station; and performing interference coordination per slice on the basis of the interference coordination information corresponding to the slice IDs.