UE Clustering for 5G TSN Scheduling and Wireless Multiplexing
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Solution Overview
Problem
The existing 5G TSN bridge model fails to exploit the multiplexing capabilities of wireless communication systems, leading to sub-optimal performance due to the low time granularity of wireless transmission, which is not inherently considered in current TDMA strategies, resulting in significant performance degradation when internal links capacity is comparable to or worse than external links.
Innovation Solution
A method for determining a repartition of user equipments (UEs) handled by a wireless communication system, utilizing a network data analytics function (NWDAF) and/or network exposure function (NEF) to obtain a grouping criterion and provide a repartition of UEs into clusters based on criteria such as multiplexing capability, independent quality of experience, radio quality, and mobility behavior, allowing for improved scheduling and integration of 5G systems in TSN networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If TDMA strategy is applied to schedule packets in 5G TSN bridge, then time multiplexing is achieved, but performance degrades due to low time granularity and inability to exploit wireless multiplexing capabilities
Solution Approach 1:
The patent segments user equipments into clusters based on their multiplexing characteristics and schedules them separately. This allows the system to exploit the multiplexing capability of wireless networks by treating different clusters differently, rather than applying uniform TDMA to all UEs, thereby resolving the contradiction between time multiplexing and performance.
Solution Approach 2:
The patent applies different scheduling strategies to different clusters of user equipments based on their specific multiplexing capabilities and channel conditions. This local differentiation allows optimization of performance for each cluster while maintaining overall system productivity, addressing the performance degradation issue.
2Reliability
If aggregated delays are considered in central scheduler, then packet collision is prevented, but bridge capability is limited by sequential use of internal links instead of concurrent usage
Solution Approach 1:
The patent segments the scheduling problem into cluster-level scheduling rather than individual packet scheduling. By organizing UEs into clusters and scheduling at the cluster level, the system can prevent collisions while enabling concurrent use of internal links, thus resolving the contradiction between collision prevention and bridge capability.
Solution Approach 2:
The patent introduces a new dimension of organization by clustering UEs based on multiplexing characteristics. This dimensional change from individual UE scheduling to cluster-based scheduling enables both collision prevention and concurrent internal link usage simultaneously.
3Adaptability or versatility
If state-of-the-art 5G TSN bridge model is used, then integration with TSN network is achieved, but multiplexing capability of wireless network is not exploited
Solution Approach 1:
The patent introduces dynamic clustering of user equipments based on their multiplexing capabilities and channel conditions. This dynamic approach allows the system to adapt to varying wireless conditions while maintaining TSN network integration, thereby exploiting multiplexing capabilities without sacrificing integration.
Solution Approach 2:
The patent changes the scheduling parameters from traditional TDMA time slots to cluster-based scheduling that accounts for wireless multiplexing characteristics. This parameter change enables exploitation of wireless multiplexing capabilities while preserving TSN network integration.
Data Source
AI summary
The invention relates to a method for determining a repartition of a set of user equipments handled by a wireless communication system. The wireless communication system comprises a core network component comprising a network functional entity (NWDAF and/or NET). The method comprises, at the network functional entity, obtaining a grouping criterion from a requesting party, and providing to the requesting party a repartition of at least part of the set of user equipments into groups of user equipments formed according to said grouping criterion. The invention further relates to a corresponding communication system and a corresponding computer program.