Sidelink Per-Flow QoS Control for V2X Reliability
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Solution Overview
Problem
Ensuring the effectiveness and reliability of vehicle-to-everything (V2X) communication through sidelink, which faces challenges in maintaining low latency and low packet loss rates, is a pressing technical issue in automated driving systems.
Innovation Solution
Implementing a per-flow Quality of Service (QoS) mechanism on sidelinks by cooperation between the core network entity, access network entity, and user equipment (UE) through the establishment of PDU sessions and configuration of sidelink per-flow QoS parameters, ensuring differentiated resource allocation and scheduling to meet service requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If V2X communication is performed through sidelink, then direct device-to-device communication is enabled, but quality of service control and reliability are difficult to ensure
Solution Approach 1:
The patent introduces a network entity as an intermediary to manage QoS for sidelink communications. The network entity receives QoS requirements from applications, determines appropriate QoS parameters, and configures them on user equipment. This mediator approach allows complex QoS control to be centralized in the network while keeping device-side implementation simpler, resolving the contradiction between ensuring communication reliability and maintaining system simplicity.
2Reliability
If per-flow QoS mechanism is implemented on sidelink, then communication effectiveness and reliability are improved, but system complexity increases
Solution Approach 1:
The patent segments the QoS control function into distinct components: application layer QoS requirements, network layer QoS parameter determination, and device layer QoS configuration. By dividing the overall QoS control into these separable segments handled by different entities (application, network entity, user equipment), the system can implement comprehensive per-flow QoS management without overwhelming any single component, thus improving reliability while managing complexity.
3Reliability
If QoS parameters are configured for sidelink communication, then packet loss rate is reduced, but latency in QoS parameter configuration occurs
Solution Approach 1:
The patent implements preliminary QoS configuration where the network entity pre-determines QoS parameters based on application requirements before actual sidelink communication begins. The network entity receives QoS requirements in advance, processes them to determine appropriate parameters, and configures them on user equipment before data transmission starts. This preliminary action ensures QoS parameters are ready when needed, reducing packet loss while minimizing the impact of configuration latency on actual communication.
Data Source
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AI summary
Embodiments of the present application provide a method and apparatus for controlling the quality of service (QoS) of a sidelink communication, a medium, and an electronic device. The method for controlling the QoS of the sidelink communication comprises: obtaining QoS information set by an application function entity for a sidelink; if it is determined, according to the QoS information, that the application function entity sets a flow-based QoS model for the sidelink, establishing a PDU session for the sidelink, and generating a flow-based QoS parameter of the sidelink according to the QoS information; and configuring the flow-based QoS parameter of the sidelink to an access network entity and a terminal device so as to control the QoS by which the terminal device performs the sidelink communication. The technical solution of the embodiments of the present application can achieve a flow-based QoS mechanism on the sidelink, thereby effectively improving the effectiveness and reliability of the sidelink communication, and meeting the service demand thereof.