Relay Retransmission Timers for Multi-Hop Wireless Transmission Control
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Solution Overview
Problem
In multi-hop wireless communication systems, traditional error detection and correction mechanisms lead to increased overhead, longer delays, and wasted resources due to the increased number of segments in the transmission path, causing inefficiencies in data transmission.
Innovation Solution
A method and device for transmission control that includes receiving data from a superordinate device, generating receipt indicators, and retransmitting data if not acknowledged by the subscriber device, with the use of relay retransmission timers to manage data transmission and retransmission efficiently across multiple nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional error detection and correction mechanisms are used in multi-hop wireless systems, then data transmission reliability is maintained, but overhead increases, delays increase, and resources are wasted
Solution Approach 1:
The patent segments the transmission path into multiple hops with intermediate relay nodes, where each node performs localized error detection and correction. This segmentation allows the system to maintain reliability at each hop while reducing the overall overhead compared to end-to-end error correction across the entire multi-hop path.
Solution Approach 2:
The patent introduces intermediate relay nodes that act as mediators in the transmission path. These relay nodes perform local acknowledgment and retransmission operations, reducing the burden on end-to-end error correction mechanisms and thereby reducing overall transmission overhead while maintaining reliability.
2Reliability
If traditional error detection and correction mechanisms are used in multi-hop wireless systems, then data transmission reliability is maintained, but transmission delays increase
Solution Approach 1:
By segmenting the transmission into smaller hops with intermediate relays, the patent reduces the round-trip time for acknowledgments and retransmissions. Each segment handles its own error correction locally, avoiding the need for lengthy end-to-end retransmission sequences and thereby reducing overall transmission delays.
Solution Approach 2:
The patent implements preliminary error detection and correction at each intermediate relay node before data continues to the final destination. This preliminary action prevents errors from propagating through the entire multi-hop path, avoiding the need for lengthy end-to-end retransmission sequences and reducing overall transmission delays.
3Reliability
If traditional error detection and correction mechanisms are used in multi-hop wireless systems, then data transmission reliability is maintained, but resource utilization deteriorates
Solution Approach 1:
The patent segments the error correction function across multiple intermediate relay nodes, allowing each node to handle local error correction independently. This segmentation enables parallel processing of error detection and correction tasks, improving resource utilization while maintaining transmission reliability.
Solution Approach 2:
The patent enables each intermediate relay node to perform self-service error detection and correction for its local segment. This self-service approach allows nodes to autonomously handle errors without requiring centralized control or end-to-end coordination, thereby improving resource utilization and reducing overhead.
Data Source
AI summary
A system and method for transmission control by an access device in a wireless communication system including a plurality of receiving devices, including receiving, from a super ordinate device, first transmission data for transmission to a subscriber device, wherein the access device communicates with the plurality of receiving devices, and the subscriber device is one of the plurality of receiving devices. The system and method further include transmitting the first transmission data to the subscriber device, and generating, by the access device, a first access receipt indicator corresponding to the first transmission data. In addition, the system and method include sending the first access receipt indicator to the super ordinate device, and retransmitting, if the access device does not receive a first subscriber receipt indicator from the subscriber device indicating that the first transmission data is received by the subscriber device, one or more portions of the first transmission data to the subscriber device. The system and method further include receiving, by the access device, second transmission data for transmission to the subscriber device, generating, by the access device, a second access receipt indicator corresponding to the second transmission data, and sending the second access receipt indicator to the super ordinate device. Further, the system and method include retransmitting, if the access device does not receive a second subscriber receipt indicator from the subscriber device indicating that all of the second transmission data is received by the subscriber device, one or more portions of the second transmission data to the subscriber device.