Wireless Node Flow Control Request Transmission
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Solution Overview
Problem
In wireless communication systems, especially in 5G networks, there is a challenge in efficiently managing radio resources to minimize latency and optimize data transmission due to increased user equipment (UE) connections and data volume, which can lead to buffer overflow and congestion issues.
Innovation Solution
A method and apparatus for a wireless node that transmits a flow control request based on reception buffer status thresholds, where the node determines the appropriate destination for the flow control request (either a parent node or a donor node) based on buffer status values, using specific threshold values to manage data flow and prevent congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the wireless node transmits data to multiple destinations simultaneously, then the data transmission capacity increases, but the buffer management complexity and latency increase
Solution Approach 1:
The patent implements dynamic flow control by adjusting the transmission destination based on real-time buffer status. When the buffer status is below the first threshold, data is transmitted to the first destination; when above the second threshold, transmission switches to the second destination. This dynamic adaptation resolves the contradiction by optimizing transmission paths based on current system conditions, thereby maintaining high throughput while minimizing latency.
Solution Approach 2:
The system changes the transmission parameter (destination node) based on buffer status parameters. By monitoring buffer occupancy and comparing it against configured thresholds, the system selectively changes the transmission destination to optimize performance. This parameter-based control mechanism enables the system to achieve high data transmission capacity while avoiding buffer overflow and reducing latency.
2Quantity of substance
If the wireless node increases buffer capacity to handle more data, then the data handling capability improves, but the risk of buffer overflow and congestion increases
Solution Approach 1:
The patent implements a feedback-based flow control mechanism where the wireless node continuously monitors its buffer status and adjusts transmission behavior accordingly. When the buffer status exceeds the second threshold, the node sends a flow control request to the second destination to reduce the data flow. This closed-loop feedback system prevents buffer overflow by proactively responding to buffer occupancy changes, thereby maintaining reliability without requiring excessive buffer capacity.
Solution Approach 2:
The system takes preliminary action by sending flow control requests before buffer overflow occurs. By monitoring buffer status and triggering flow control requests when thresholds are exceeded, the system prevents congestion and overflow conditions rather than reacting after they occur. This proactive approach maintains system reliability while using buffer capacity efficiently.
3Device complexity
If the wireless node uses single destination for data transmission, then the system complexity is reduced, but the resource utilization efficiency decreases
Solution Approach 1:
The patent segments the transmission path by introducing multiple destination nodes (first destination and second destination) with different roles. The first destination handles normal data transmission, while the second destination handles flow control requests. This segmentation allows the system to optimize resource utilization by routing data through appropriate paths based on buffer status, thereby improving productivity without significantly increasing overall system complexity.
Data Source
AI summary
A method for transmitting a flow control request by a wireless node in a wireless communication system is disclosed. The method comprises receiving information related to a first destination and a second destination and information related to first and second threshold values for triggering the flow control request; based on a reception buffer status value being greater than the first threshold value and is less than the second threshold value, transmitting the flow control request to the first destination; and based on the reception buffer status value being greater than the second threshold value, transmitting the flow control request to the second destination.