Data Receiving Status Reporting for IAB Node Switching
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Solution Overview
Problem
In integrated access and backhaul (JAB) networks, when the link quality deteriorates, there is a risk of data loss due to the need for nodes to switch, and existing methods do not effectively manage data retransmission to ensure continuity.
Innovation Solution
A data processing method where devices report data receiving status information to enable retransmission, reducing feedback reports and air interface overheads, by switching from a source node to a destination node and using a core network device to manage data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If node switching is implemented to maintain communication quality when link deteriorates, then communication reliability is improved, but data loss occurs during switching transition
Solution Approach 1:
The source node performs preliminary actions by generating and sending data receiving status information before actually switching to the destination node. This includes determining which data packets have been received and which need retransmission, so that when switching occurs, the destination node already has the necessary information to continue transmission without data loss.
Solution Approach 2:
The patent implements feedback mechanisms where the source node sends data receiving status information back to the destination node through the core network device. This feedback loop ensures that the destination node is informed about the reception status of data packets, enabling it to appropriately handle retransmission and maintain communication reliability during the switching process.
2Reliability
If comprehensive data status reporting is implemented to prevent data loss, then data transmission reliability is improved, but feedback reports and air interface overheads increase
Solution Approach 1:
The patent extracts only the essential information needed for data transmission continuity - specifically, the data receiving status information indicating which packets were received and which need retransmission. By taking out only this critical information rather than transmitting complete data status reports, the system reduces overhead while maintaining reliability.
Solution Approach 2:
The core network device serves as an intermediary that facilitates the transmission of data receiving status information from the source node to the destination node. This intermediary approach allows for efficient information transfer without requiring direct complex interactions between all nodes, thereby reducing overall system overhead.
Data Source
AI summary
A data processing method, including determining, by a second device, in response to a first device switching from the second device to a third device, data receiving status information of the first device, and reporting, by the second device, the data receiving status information of the first device, where the data receiving status information instructs a fourth device to send data to the first device according to the data receiving status information.