Network-Slice-Aware LAA Control for Unlicensed Band Interference
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Solution Overview
Problem
The challenges in 5G Licensed Assisted Access (LAA) include high and unpredictable interference in unlicensed bands, particularly in 5 GHz, and the need for fair co-existence with other technologies, as well as the lack of support for network slicing and dynamic radio topologies, which affect Key Performance Indicators (KPIs) and require fast coordination between nodes.
Innovation Solution
A control device and radio access node system that provides network-slice-aware LAA configurations, using coordinated unlicensed band usage and slice-tailored parameters to meet diverse KPIs, enabling fair co-existence and dynamic adaptation of LAA operations across different slices, with features like LBT configuration and weighting factors to reduce signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If unlicensed bands are used for LAA to improve spectrum utilization, then network capacity increases, but interference from other technologies (Wi-Fi, radar) and unpredictable channel conditions worsen
Solution Approach 1:
The patent segments the network into multiple network slices, each with dedicated LAA configurations and parameters. Different slices can operate with customized settings optimized for their specific requirements, allowing simultaneous operation in the same unlicensed band with reduced mutual interference. Each slice receives tailored resource allocation and transmission parameters.
Solution Approach 2:
The patent implements dynamic LAA configuration where transmission parameters, resource allocation, and operational modes are adapted in real-time based on channel conditions, interference levels, and slice requirements. This dynamic adjustment allows the system to respond to unpredictable unlicensed band conditions while maintaining service quality.
2Adaptability or versatility
If network slicing is implemented to meet diverse vertical industry requirements, then service customization improves, but coordination complexity between nodes increases
Solution Approach 1:
The patent divides the network into independent network slices, each functioning as a separate logical network with dedicated resources and configurations. This segmentation allows each slice to be independently managed and coordinated, reducing the overall coordination complexity by localizing control decisions to specific slices rather than requiring global coordination across the entire network.
Solution Approach 2:
The patent performs preliminary configuration of LAA parameters and slice-specific settings during network setup and slice creation. By pre-configuring slice templates, resource allocations, and operational parameters beforehand, the system reduces real-time coordination complexity when slices are activated or modified.
3Reliability
If fast coordination between multiple 5G nodes is implemented to meet diverse slice requirements, then per-slice KPIs improve, but signaling overhead increases
Solution Approach 1:
The patent performs preliminary configuration of LAA parameters and slice-specific settings during network setup and slice creation. By pre-configuring slice templates, resource allocations, and operational parameters beforehand, the system reduces real-time coordination complexity when slices are activated or modified.
Solution Approach 2:
The patent implements partial coordination by allowing autonomous operation of individual network slices within their configured parameters, rather than requiring complete centralized coordination for all decisions. Each slice can independently adjust operations within its allocated resource boundaries, reducing the volume of signaling required while maintaining reliability.
Data Source
AI summary
The present invention provides a control device for providing network-slice-aware licensed assisted access (LAA). The control device is configured to determine, for at least one slice-type, an unlicensed frequency band and/or an LAA configuration parameter. Furthermore, the control device is configured to provide, to at least one radio access node, configuration information comprising the determined frequency band and/or the LAA configuration parameter. The present invention also provides a radio access node for configuring network-slice-aware LAA. The radio access node is configured to receive, from a control device, configuration information comprising, for at least one slice-type, a frequency band and/or an LAA configuration parameter. The radio access node is further configured to request and receive, from a UE, a channel measurement report on one or more unlicensed frequency bands.