TSN-Cellular QoS Mapping via Virtual Node Mediator
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Solution Overview
Problem
The integration of a 5G system as a virtual Time-Sensitive Networking (TSN) node poses challenges in mapping Quality of Service (QoS) requirements and fulfilling deterministic communication needs, particularly in industrial automation where stringent latency and reliability are crucial.
Innovation Solution
The implementation of a method where a cellular communications system operates as a virtual TSN node, receiving and mapping TSN QoS parameters and traffic patterns to apply appropriate policies and rules within the 5G system, ensuring deterministic communication by configuring network resources and optimizing radio access networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a 5G system operates as a virtual TSN node to enable flexible connectivity in industrial automation, then adaptability and versatility are improved, but QoS parameter mapping complexity and system complexity increase
Solution Approach 1:
A TSN-aware core network function is introduced as an intermediary between the TSN network and the 5G core network. This intermediary entity receives TSN QoS parameters, translates them into 5G QoS parameters, and configures network elements accordingly, thereby resolving the complexity of direct parameter mapping between different network domains
Solution Approach 2:
The QoS parameter mapping function is segmented into a dedicated TSN-aware core network function that operates independently from other 5G core functions. This segmentation allows specialized handling of TSN QoS requirements without affecting the overall 5G system architecture, making the complexity manageable and isolable
2Reliability
If TSN QoS parameters are mapped to 5G QoS parameters to ensure deterministic communication, then reliability is improved, but system complexity and difficulty of detecting and measuring increase
Solution Approach 1:
The TSN-aware core network function serves as a mediator that receives TSN QoS parameters (including latency, jitter, packet loss requirements) and translates them into equivalent 5G QoS parameters. This intermediary translation process ensures deterministic communication requirements are met while managing system complexity through centralized parameter conversion
Solution Approach 2:
The system performs parameter transformation by converting TSN-specific QoS parameters into 5G-specific QoS parameters through the TSN-aware core network function. This parameter change enables the 5G network to interpret and enforce deterministic communication requirements using its existing QoS framework, thereby maintaining reliability without proportionally increasing complexity
3Productivity
If traffic pattern information is provided to RAN nodes to optimize radio resources, then productivity is improved, but device complexity and information processing requirements increase
Solution Approach 1:
The TSN-aware core network function performs preliminary action by receiving and processing traffic pattern information from the TSN network before it reaches RAN nodes. The function extracts relevant traffic characteristics and prepares optimized resource allocation configurations in advance, thereby improving radio resource utilization while limiting the information processing burden on individual RAN nodes
Data Source
AI summary
Systems and methods related to Time-Sensitive Networking (TSN)-cellular communication system Quality of Service (QoS) mapping are disclosed. In some embodiments, a method performed for operating a cellular communications system as a virtual TSN node in a TSN system comprises, at a TSN application function, receiving one or more TSN QoS parameters for the virtual TSN node from a controller associated with the TSN system and providing the one or more TSN QoS parameters to a core network function in a core network of the cellular communications system. The method further comprises, at the core network function, receiving the one or more TSN QoS parameters, mapping them to one or more QoS policies and/or one or more rules in the cellular communications system, and applying the one or more QoS policies and/or the one or more rules in the cellular communications system.