DCI-Controlled Uplink Feedback for Reliable NR Multicast
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Solution Overview
Problem
Existing wireless communication systems lack a feedback mechanism for multicast or broadcast services in New Radio (NR), particularly for services like V2X and industrial networks, which require higher reliability, leading to inefficiencies in power consumption and resource usage.
Innovation Solution
A method is introduced to activate or deactivate uplink feedback based on service reliability requirements, using downlink control information (DCI) to indicate the activation or deactivation of uplink feedback mechanisms, ensuring reliable service transmission while reducing power consumption and resource overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink feedback mechanism is activated for multicast or broadcast services, then service transmission reliability is improved, but power consumption and resource overhead increase
Solution Approach 1:
The patent implements dynamic activation and deactivation of uplink feedback mechanism through DCI messages. The network device can flexibly switch between feedback enabled and disabled states based on service requirements, allowing the system to adapt between high reliability mode (feedback enabled) and low power consumption mode (feedback disabled)
2Reliability
If uplink feedback mechanism is activated for multicast or broadcast services, then service transmission reliability is improved, but resource overhead increases
Solution Approach 1:
The patent implements dynamic activation and deactivation of uplink feedback mechanism through DCI messages. The network device can flexibly switch between feedback enabled and disabled states based on service requirements, allowing the system to adapt between high reliability mode (feedback enabled) and low power consumption mode (feedback disabled)
3Use of energy by moving object
If no feedback mechanism is introduced for multicast or broadcast services, then power consumption and resource overhead are reduced, but service transmission reliability deteriorates
Solution Approach 1:
The patent implements dynamic activation and deactivation of uplink feedback mechanism through DCI messages. The network device can flexibly switch between feedback enabled and disabled states based on service requirements, allowing the system to adapt between high reliability mode (feedback enabled) and low power consumption mode (feedback disabled)
Data Source
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AI summary
Embodiments of the present application provide a wireless communication method, a terminal device, and a network device. The method comprises: receiving downlink control information (DCI), the DCI being used for instructing activation or deactivation of uplink feedback. In the present application, DCI is used for instructing activation or deactivation of uplink feedback; in the case that the uplink feedback is activated, a network may determine, according to the uplink feedback, whether retransmission data needs to be sent, so that the reliability of service transmission is ensured; in the case that the uplink feedback is deactivated, sending feedback information is avoided, and power consumption and resource overheads of a terminal device are reduced. In particular, for a multicast or broadcast service, uplink feedback may be activated or deactivated on the basis of the reliability requirement of a service, and therefore power consumption and resource overheads of the terminal device are reduced while the reliability of service transmission is ensured.