Backhaul Node QoS for Tactile Traffic
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Solution Overview
Problem
Current networking technologies face challenges in providing ultra-low latency and prioritizing tactile traffic effectively, especially in high-speed networks like 5G, due to the lack of subscriber-level knowledge in backhaul networks, which hinders the ability to meet the stringent quality of service (QoS) requirements for applications like telemedicine and autonomous driving.
Innovation Solution
The solution involves a method where an electronic device notifies a controller of authorized tactile traffic, causing the backhaul node to install a flow table entry with specific QoS bits matching subscriber or session IDs, ensuring packets are forwarded with ultra-low latency, and authenticating packets to prevent misuse, thereby prioritizing tactile traffic across the communication network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If backhaul nodes forward traffic without subscriber-level knowledge, then network simplicity is maintained, but QoS prioritization for tactile traffic cannot be achieved
Solution Approach 1:
The patent applies preliminary action by pre-installing flow table entries in backhaul nodes before tactile traffic arrives. The controller receives notifications from access nodes about authorized tactile traffic applications and proactively configures the backhaul network with flow table entries containing QoS bits and matching fields (subscriber ID or session ID) ahead of time, ensuring immediate prioritization when tactile traffic flows through without requiring real-time decision-making at backhaul nodes.
2Measurement precision
If flow table entries include multiple matching fields, then traffic identification accuracy improves, but processing complexity and latency increase
Solution Approach 1:
The patent extracts and uses only the essential identifying information (subscriber ID or session ID) from packets to match against flow table entries. By focusing on these single critical fields rather than examining multiple packet attributes, the system achieves sufficient traffic identification accuracy while minimizing processing complexity and latency, enabling ultra-low latency forwarding for tactile traffic.
3Loss of time
If tactile traffic is prioritized without authentication, then latency is reduced, but network security and QoS integrity are compromised
Solution Approach 1:
The system performs preliminary authentication by installing flow table entries only after the controller verifies that the application is authorized to transmit tactile traffic. The access node notifies the controller of authorized applications before flow table installation, ensuring that only authenticated tactile traffic receives prioritized handling, thereby maintaining both low latency and QoS integrity.
Data Source
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AI summary
Methods of providing quality of service support for tactile traffic are disclosed. In one embodiment, an electronic device notifies a controller that an application has been authorized to transmit tactile traffic in the communication network. The controller, responsive to the notification, causes the backhaul node to install a flow table entry in a flow table of the backhaul node, through which packets of the application is to be forwarded within a latency defined for the tactile traffic by the backhaul node. The electronic device authenticates a packet being sourced from or destined to the application that has been authorized to transmit the tactile traffic in the communication network, and forwards the packet within the latency defined for the tactile traffic.