TSN Bridge Resource Bundle for Deterministic Latency
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G networks, face challenges in providing deterministic latency and efficient resource management for time-sensitive networking (TSN) communications, leading to uncoordinated resource provisioning and high, unpredictable latency across multiple hops, which is inadequate for industrial and latency-critical applications.
Innovation Solution
The implementation of a resource bundle with coordinated end-to-end resource provisioning, using configured grants and semi-persistent scheduling instances, jointly activated and deactivated to ensure a maximum end-to-end latency, emulating TSN gating over 5G network hops, thereby supporting seamless integration of TSN domains with 5G core networks and providing deterministic latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If uncoordinated resource provisioning is used across multiple hops, then device complexity is reduced, but latency becomes high and unpredictable
Solution Approach 1:
The patent merges resource provisioning across multiple hops into a unified coordinated mechanism. The TSN bridge receives a single resource bundle request and coordinates resource allocation across all intermediate nodes (IAB nodes, gNBs) simultaneously, ensuring end-to-end latency guarantees while avoiding individual node complexity increases through centralized coordination.
Solution Approach 2:
The TSN bridge acts as an intermediary that receives resource bundle requests from source UEs and translates them into coordinated resource allocations across multiple network hops. It mediates between the application's latency requirements and the network's resource allocation mechanisms, converting QoS requirements into concrete resource reservations without requiring each node to independently understand end-to-end latency constraints.
2Reliability
If over-provisioning is used to absorb bursty traffic, then reliability is improved, but resource efficiency deteriorates
Solution Approach 1:
The patent implements dynamic resource provisioning where the TSN bridge calculates precise resource requirements based on actual traffic characteristics and latency constraints. Resources are allocated dynamically according to the specific needs of each TSN flow rather than static over-provisioning, allowing the system to adapt to varying traffic patterns while maintaining reliability guarantees and avoiding waste during low-traffic periods.
Solution Approach 2:
The system changes resource allocation parameters based on traffic analysis. The TSN bridge evaluates traffic burst characteristics, latency requirements, and network conditions to adjust resource bundle parameters (time slots, frequency resources, power) precisely matching actual needs, thereby achieving reliable traffic absorption without excessive resource consumption.
3Loss of time
If traditional resource allocation is used, then adaptability to different traffic patterns is improved, but deterministic latency guarantee deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-reserving resources in a coordinated manner across all network hops before TSN traffic transmission begins. The TSN bridge calculates and secures the complete end-to-end resource path in advance based on latency requirements, ensuring deterministic latency guarantees while adapting to different traffic patterns through flexible resource bundle configuration that can be tailored to specific TSN application needs.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may transmit a request for a network device to establish a resource bundle, of resources to be used by nodes at hops in a time sensitive networking (TSN) bridge for TSN communications to a second UE, with a maximum latency for the TSN bridge. The first UE may transmit the TSN communications to the second UE via the TSN bridge. Numerous other aspects are described.