Deterministic Packet Transmission via Frequency Control
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Solution Overview
Problem
In 5G communications networks, particularly in ultra-reliable and low-latency (URLLC) scenarios, implementing deterministic transmission of packets is challenging due to the need for controlled packet sending frequencies and scheduling, which existing technologies struggle to achieve effectively.
Innovation Solution
A communication method where a terminal device reports its capability to control packet sending frequency to a control network element, allowing the control network element to either send the packet sending frequency to the terminal device or an access network device, ensuring deterministic transmission by controlling the packet sending frequency accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device controls the packet sending frequency, then the deterministic transmission is improved, but the device complexity increases
Solution Approach 1:
The patent introduces an access network device as an intermediary to control the packet sending frequency when the terminal device lacks this capability. The control network element sends the frequency to the access network device, which then transmits packets according to this frequency, eliminating the need for complex terminal device control while maintaining deterministic transmission.
2Reliability
If the access network device controls the packet sending frequency, then the deterministic transmission is improved, but the signaling overhead increases
Solution Approach 1:
The terminal device self-reports its capability to control packet sending frequency to the control network element. This allows the system to automatically determine whether the terminal or access network device should control the frequency, reducing unnecessary signaling overhead while ensuring deterministic transmission when needed.
3Loss of time
If the packet sending frequency is determined by the talker, then the end-to-end delay is controlled, but the adaptability to different scenarios decreases
Solution Approach 1:
The patent makes the packet sending frequency control dynamic by allowing the system to adaptively choose between terminal device control and access network device control based on the terminal's capability and service requirements. This dynamic approach maintains end-to-end delay control while improving adaptability to different scenarios.
Data Source
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AI summary
This application provides a communication method for deterministic transmission, an access network device, a terminal device, a control network element, and a computer-readable storage medium. The communication method includes: determining, by a terminal device, first indication information, where the first indication information is used to indicate whether the terminal device has a capability of controlling a packet sending frequency; sending, by the terminal device, the first indication information to a control network element; receiving, by the control network element, the first indication information from the terminal device; when the first indication information is used to indicate that the terminal device does not have the capability of controlling the packet sending frequency, sending, by the control network element, a packet sending frequency of a flow to an access network device; receiving, by the access network device, the packet sending frequency of the flow from the control network element; and sending, by the access network device, a packet of the flow based on the packet sending frequency of the flow. The communication method, the access network device, the terminal device, the control network element, and the computer-readable storage medium provided in this application help implement deterministic transmission of the packet in a communications network.