QoS Mapping for TSN Traffic in Wireless Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in effectively mapping quality of service (QoS) for time-sensitive network (TSN) traffic, particularly in ensuring stringent latency and reliability requirements for industrial applications.
Innovation Solution
A method and apparatus for configuring QoS parameters in a wireless communication system, where a network controller receives a TSN traffic configuration indicating the duration and periodicity of a gate open state, and configures QoS parameters based on TSN capability parameters and these traffic configuration elements, before transmitting them to a base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional QoS mechanisms are used for wireless traffic, then general data transmission is supported, but deterministic latency and reliability requirements for TSN traffic cannot be met
Solution Approach 1:
The patent introduces a QoS parameter mapping mechanism that acts as an intermediary between TSN gate control parameters (gate open duration, periodicity) and wireless QoS parameters (5QI, GFBR, MFBR, MDBV). This mapping layer translates deterministic TSN requirements into wireless-compatible QoS parameters, enabling reliable TSN traffic transmission without direct integration of TSN gate control into the wireless system.
Solution Approach 2:
The patent transforms TSN traffic characteristics (gate open state duration, periodicity) into equivalent wireless QoS parameters through mathematical relationships. For example, the gate open duration and periodicity are used to calculate guaranteed flow bit rate (GFBR) and maximum data burst volume (MDBV), converting deterministic timing requirements into rate-based QoS parameters that the wireless system can enforce.
2Reliability
If TSN gate control mechanism is directly integrated into wireless system, then deterministic timing is achieved, but system complexity increases
Solution Approach 1:
The patent extracts the essential deterministic timing characteristics from the TSN gate control mechanism (gate open duration and periodicity) and separates them from the full TSN architecture. Only these critical parameters are transmitted to the wireless system via F1 interface, while the complex TSN gate control logic remains in the wired network domain. This extraction approach achieves deterministic timing without importing entire TSN control complexity into the wireless system.
3Reliability
If QoS parameters are configured based on TSN capability parameters and traffic configuration, then TSN traffic requirements are satisfied, but configuration complexity increases
Solution Approach 1:
The patent performs preliminary configuration of QoS parameters at the network controller before TSN traffic flows are established. The network controller pre-calculates appropriate 5QI, GFBR, MFBR, and MDBV values based on TSN capability parameters and expected traffic patterns. This preliminary configuration eliminates the need for real-time QoS parameter negotiation and adjustment, reducing operational complexity while ensuring TSN requirements are met from the outset.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network controller of a wireless communication system may receive a timesensitive network (TSN) traffic configuration that indicates a duration of a gate open state for a TSN traffic flow and a periodicity with which the gate open state occurs; configure one or more quality of service (QoS) parameters, associated with the wireless communication system, for a QoS flow that is to carry the TSN traffic flow, wherein the one or more QoS parameters are configured based at least in part on one or more TSN capability parameters associated with the network controller and at least one of the duration of the gate open state or the periodicity; and transmit the one or more QoS parameters to a base station of the wireless communication system. Numerous other aspects are provided.