Relay Retransmission Timer for Multi-Hop Wireless Networks
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Solution Overview
Problem
Traditional error detection and correction mechanisms in multi-hop wireless networks lead to increased overhead, longer delays, and wasted resources due to the complexity of error detection and correction in multi-hop transmissions, especially with intra-cell and inter-cell handovers.
Innovation Solution
The implementation of relay retransmission timers and RACK indicators to manage data retransmissions efficiently across multiple nodes, allowing for localized retransmission and resource allocation optimization in wireless communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional error detection and correction mechanisms are used in multi-hop wireless networks, then error handling is performed, but overhead increases, delays lengthen, and resources are wasted
Solution Approach 1:
The patent segments the error detection and correction process into localized per-hop operations rather than end-to-end processing. Each relay node independently performs error checking on received packets and generates ACK/NACK indicators locally, dividing the complex multi-hop error handling into simpler atomic units that reduce overall system overhead and improve efficiency
Solution Approach 2:
The patent implements preliminary error detection at each relay node before forwarding packets to the next hop. By performing error checking and generating acknowledgment indicators in advance at intermediate nodes, the system avoids the need for complex end-to-end error handling, reducing delays and resource waste while maintaining reliability
2Reliability
If traditional error detection and correction mechanisms are used in multi-hop wireless networks, then error handling is performed, but transmission delays increase
Solution Approach 1:
The patent divides the error detection process into independent per-hop operations at each relay node, allowing parallel error checking rather than sequential end-to-end verification. This segmentation enables simultaneous error handling at multiple hops, significantly reducing total transmission delay while maintaining comprehensive error detection coverage
Solution Approach 2:
The patent performs error detection and acknowledgment indicator generation in advance at each relay node before packets proceed to the next hop. This preliminary action eliminates the need for waiting for end-to-end acknowledgment, reducing transmission delays by enabling continuous forward movement of correctly received packets while errors are handled locally and efficiently
3Reliability
If traditional error detection and correction mechanisms are used in multi-hop wireless networks, then error handling is performed, but network resources are wasted
Solution Approach 1:
The patent segments resource consumption by limiting error detection and correction operations to individual hops rather than requiring redundant end-to-end verification across the entire multi-hop path. Each relay node performs error checking only on packets received from its immediate predecessor, eliminating wasteful repeated error handling and reducing overall network energy consumption while maintaining reliability
Solution Approach 2:
The patent enables each relay node to autonomously perform error detection and generate acknowledgment indicators for its own received packets without requiring external assistance from end nodes or centralized control. This self-service approach at each hop reduces signaling overhead and resource waste by distributing error handling responsibilities locally, allowing the network to efficiently manage errors with minimal additional resource consumption
Data Source
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AI summary
A system and method for transmission control in a wireless communication system, including receiving data for transmission to a receiving device, and forwarding the data to a subordinate device. The method also includes initiating a timer, and generating a supplemental receipt indicator. If the intermediate device receives at least one of a receipt indicator and one or more subordinate supplemental receipt indicators before expiration of the timer, the intermediate device includes the generated supplemental receipt indicator with the receipt indicator or one or more subordinate supplemental receipt indicators, and sends the indicators to a next superordinate device. If the intermediate device does not receive at least one of a receipt indicator or one or more subordinate supplemental receipt indicators before the expiration of the timer, the intermediate device sends the generated supplemental receipt indicator to the next superordinate device.