3GPP Bridge PDU Session Activation for TSN Delay Guarantees
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Solution Overview
Problem
Time-sensitive networking (TSN) systems face challenges in providing deterministic data transmission with low latency and high reliability, particularly in industrial environments where 3GPP wireless technologies are integrated with wired TSN, requiring efficient delay guarantee mechanisms across 3GPP bridges to ensure quality of service (QoS) constraints.
Innovation Solution
The solution involves an apparatus that receives management objects containing routing information and bridge delays to determine QoS constraints for TSN flows, modifying existing or establishing new protocol data unit sessions to ensure delay guarantees, and optimizing resource utilization in 3GPP bridges by combining forwarding tables and bridge delays, allowing for efficient allocation of resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If 3GPP wireless technologies are integrated with wired TSN to support industrial applications, then network coverage and flexibility are improved, but ensuring deterministic data transmission with low latency and high reliability becomes more difficult
Solution Approach 1:
The patent introduces a 3GPP bridge as an intermediary device that connects wireless 3GPP networks with wired TSN networks. This bridge implements TSN bridge functions within the 3GPP network infrastructure, acting as a mediator that enables deterministic data transmission across the wireless-wired interface while maintaining TSN requirements such as delay guarantees and quality of service constraints
Solution Approach 2:
The patent modifies bridge delay parameters to account for wireless transmission characteristics. By adjusting delay values in management objects to reflect actual wireless bridge delays, the system ensures that QoS constraints and timing requirements are accurately represented and enforced across the hybrid network architecture
2Reliability
If QoS constraints are enforced to guarantee low latency for TSN flows, then transmission reliability is improved, but network resource utilization efficiency may deteriorate
Solution Approach 1:
The patent applies QoS constraints locally to specific ingress-egress port pairs and TSN flows that require deterministic transmission. Rather than enforcing uniform QoS policies across the entire network, the system applies quality constraints only where needed based on actual TSN traffic requirements, allowing other network resources to be used more efficiently for non-critical traffic
Solution Approach 2:
The patent establishes QoS constraints that are sufficient to meet TSN requirements without being overly restrictive. By determining appropriate delay guarantees based on actual bridge delays and traffic requirements, the system avoids excessive resource reservation while still ensuring the necessary transmission reliability for time-sensitive applications
3Reliability
If PDU sessions are established to provide service guarantees before management objects are received, then initial QoS assurance is improved, but resource allocation complexity increases
Solution Approach 1:
The patent establishes PDU sessions with initial service guarantees before receiving detailed management objects from the centralized network controller. This preliminary action ensures that TSN flows have basic QoS assurance from the outset, allowing immediate transmission while more detailed resource allocation is being finalized based on actual network conditions and requirements
Data Source
AI summary
Methods and apparatus, including computer program products, are provided for a 3GPP bridge for time sensitive networks. In some example embodiment, there may be provided an apparatus causes to at least: receive at least one management object, the at least one management object comprising routing information between an ingress port at a 3GPP bridge and an egress port at the 3 GPP bridge; determine, for the ingress port and the egress port combination, at least one quality of service constraint to provide a delay guarantee towards a destination media access control address, the determination based on the received at least one management object and one or more bridge delays indicating a delay between the ingress port and the egress port; and cause a change, based on the determined at least one quality of service constraint, to a protocol data unit session carrying a time sensitive network flow.