Communication Link Feedback for Timely Beam Failure Detection
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Solution Overview
Problem
In high-frequency beam communications, existing systems fail to timely detect communication link failures, leading to unnecessary data transmissions and low resource utilization due to the inability of the receiving and transmitting ends to learn about link failures promptly.
Innovation Solution
A method and system for determining and transmitting feedback information about the status of communication links, including failure information and preferred transmission links, enabling the communication nodes to adjust their links accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transmitting end retransmits data on a reserved resource and waits for acknowledgement information, then data can be transmitted, but resource utilization rate decreases and time delay increases due to inability to detect link failure timely
Solution Approach 1:
The receiving end actively feeds back link status information to the transmitting end through uplink resources. This feedback mechanism enables the transmitting end to detect link failures timely and stop unnecessary retransmissions, thereby improving resource utilization rate while maintaining reliable communication.
Solution Approach 2:
The receiving end performs link status detection and sends feedback information before the transmitting end initiates retransmission. This preliminary action allows the transmitting end to avoid unnecessary retransmissions on failed links, improving both resource utilization and detection accuracy.
2Reliability
If multiple retransmission attempts are made before determining link failure, then transmission reliability is maintained, but time delay increases and resources are wasted
Solution Approach 1:
The receiving end sends link status feedback to the transmitting end, enabling real-time detection of link failures. This allows the system to immediately stop retransmission attempts on failed links, reducing link recovery time while maintaining transmission reliability through accurate failure detection.
Solution Approach 2:
The receiving end autonomously monitors link status and generates feedback information without requiring multiple retransmission attempts from the transmitting end. This self-service approach enables timely link failure detection and reduces unnecessary retransmissions, thereby reducing time loss.
3Measurement precision
If the receiving end monitors multiple transmission links, then link failure detection capability improves, but device complexity increases
Solution Approach 1:
The receiving end monitors multiple transmission links and consolidates their status into feedback information sent to the transmitting end. This feedback mechanism enables precise link status detection across multiple links while keeping the receiving end's complexity manageable through standardized monitoring and reporting procedures.
Data Source
AI summary
An information feedback method, device and system are provided. The method includes: determining, by a first communication node, feedback information for indicating a status of communication links between the first communication node and a serving communication node, where the feedback information includes at least one of the following: failure information of a first type of transmission link, a request for training signal of transmission modes and/or a request for training signal of receiving modes, and indication information of M preferred transmission links, and the first type of transmission link and the M preferred transmission links include transmission links from the serving communication node to the first communication node, where M is a positive integer greater than or equal to 1; and transmitting, by the first communication node, the feedback information to the serving communication node. The present disclosure solves the problem in the existing art of a low resource utilization rate because a receiving end and a transmitting end cannot learn a communication link failure in time, enables the receiving end and the transmitting end to learn a status of communication links between them in time, and effectively improves the resource utilization rate.