Core Network Element QoS Rule Provision for PC5 Communication
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Solution Overview
Problem
In V2X communication systems, the Quality of Service (QoS) information for PC5 interface-based communication is prone to unauthorized modification, leading to unreliable QoS, as it is typically set by the application layer without authorization.
Innovation Solution
A method where a terminal requests QoS information from a core network element, which sends the QoS rule or profile for PC5 interface-based communication, ensuring that the QoS information is obtained from the network side and reducing unauthorized modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If QoS information is set by the application layer without authorization, then the terminal can control PC5 interface resources, but the QoS information is prone to unauthorized modification and becomes unreliable
Solution Approach 1:
The patent introduces the core network element as an intermediary between the terminal and QoS information. The terminal sends a request message to the core network element, which then provides the QoS rule. This intermediary mechanism ensures that QoS information comes from a trusted network source rather than being set directly by the application layer, thereby preventing unauthorized modification while maintaining terminal control capability.
2Reliability
If QoS information is obtained from the network side, then the reliability and flexibility of QoS information is improved, but the terminal cannot independently control QoS settings
Solution Approach 1:
The patent implements a feedback mechanism where the terminal sends a request message to the core network element, receives the QoS rule, and then applies it locally. This feedback loop allows the terminal to initiate the QoS information acquisition process and adapt the received information to its specific needs, maintaining a degree of autonomy while ensuring the information comes from a reliable network source.
Data Source
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AI summary
This application discloses a communications method and apparatus. The method includes: receiving, by a core network element, a first request message from a terminal, where the first request message is used to request information used for PC5 interface-based communication of the terminal; and sending, by the core network element to the terminal based on the first request message, a quality of service QoS rule used for the PC5 interface-based communication. According to this application, QoS information used for the PC5 interface-based communication can be obtained from a network side, thereby improving reliability of the obtained QoS information, and preventing the QoS information from being modified without authorization.