WTRU UDI-QFI Mapping for Low-Latency Sensor Data Transmission
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Solution Overview
Problem
Existing communication systems face challenges in achieving low-latency and deterministic data transmission for industrial control applications, particularly in factory automation, where high communication service availability and low end-to-end latencies are critical.
Innovation Solution
The proposed solution involves a method where a Wireless Transmit/Receive Unit (WTRU) associates unique data identifiers (UDIs) with sensor data and wireless modem data, generates mappings between these UDIs and network Quality of Service (QoS) Flow Identifiers (QFIs), and transmits the data to a network node, enabling direct and prioritized data transmission while maintaining QoS requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional communication frameworks are used, then system compatibility is maintained, but latency and determinism requirements cannot be met
Solution Approach 1:
The patent segments data transmission by creating separate data paths: a first data path for sensor data with high priority and low latency requirements, and a second data path for other data types. This segmentation allows each path to be optimized independently, with the first path using direct transmission without traditional QoS mapping to achieve lower latency while maintaining overall system compatibility.
2Reliability
If separate data paths are created for different data types, then transmission determinism is improved, but system complexity increases
Solution Approach 1:
The patent implements dynamic data path selection where the WTRU can switch between traditional QoS-based transmission and the new direct transmission path based on data type and urgency. The system dynamically associates UDIs with appropriate transmission paths, allowing flexible adaptation to different communication requirements without rigidly fixing the architecture.
Solution Approach 2:
The patent introduces Unique Data Identifiers (UDIs) as an intermediary mechanism to bridge sensor data with appropriate transmission paths. The UDI acts as a mediator that enables direct mapping between sensor data and network resources without requiring complex traditional QoS flow mappings, simplifying the data path while improving determinism.
3Loss of time
If direct transmission without QoS mapping is used, then latency is reduced, but QoS management capability is compromised
Solution Approach 1:
The patent performs preliminary QoS configuration where the WTRU is pre-configured with multiple UDIs and their corresponding data path associations before actual data transmission. This preliminary setup includes pre-establishing the mapping between UDIs and data paths, so that during runtime, data can be transmitted immediately without complex real-time QoS negotiation, reducing latency while maintaining QoS management through pre-planned configurations.
Data Source
AI summary
Method and apparatuses for low-latency transmission of sensor data are described herein. A method may comprise receiving, from one or more data producers, sensor data, where the sensor data from each of the one or more data producers is identified with a respective Unique Data Identifier (UDI) and a corresponding Quality of Service (QOS) Flow Identifier (QFI). The method may include creating an association between the respective UDI and the corresponding for the sensor data received from each of the one or more data producers based on a received mapping configuration or in-band signaling, and transmitting the sensor data from each of the one or more data producers to a second WTRU according to the created association between the respective UDI and corresponding QFI.