Radio Communication Device TCP ACK Transmission via Shared Channel
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Solution Overview
Problem
Current radio communication systems experience delays in transmitting TCP ACK, which deteriorates throughput in TCP communication.
Innovation Solution
A radio communication device transmits delivery confirmation information, such as TCP ACK, using a shared channel without scheduling information, thereby omitting the scheduling request procedure and reducing delay time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scheduling information is used to transmit delivery confirmation information, then transmission reliability is improved, but transmission delay increases
Solution Approach 1:
The patent segments the transmission process by separating the delivery confirmation information (ACK) from the normal scheduled data transmission. The ACK is transmitted independently using a shared channel without requiring scheduling information, while other data continues to use the scheduled transmission path. This segmentation allows critical ACK transmissions to bypass the scheduling delay without compromising overall system reliability.
Solution Approach 2:
The patent enables the radio communication device to preliminarily prepare for ACK transmission by having the capability to send delivery confirmation information on the shared channel immediately upon receiving data, without waiting for scheduling information. This preliminary action reduces the delay while maintaining reliability through the established shared channel protocol.
2Manufacturing precision
If scheduling request procedure is performed, then resource allocation accuracy is improved, but transmission delay increases
Solution Approach 1:
The patent extracts the delivery confirmation information transmission from the scheduling request procedure. By taking out the ACK transmission from the scheduled resource allocation process and allowing it to use the shared channel directly, the patent eliminates the scheduling request delay while maintaining appropriate resource allocation through the shared channel's inherent resource management mechanisms.
3Loss of time
If shared channel without scheduling information is used, then transmission delay is reduced, but resource allocation efficiency may deteriorate
Solution Approach 1:
The patent applies universality by allowing the shared channel to serve multiple functions: both regular data transmission with scheduling information and urgent delivery confirmation transmission without scheduling information. This multi-functionality enables the shared channel to handle both scheduled and unscheduled traffic efficiently, reducing delay for critical ACK transmissions while maintaining overall resource allocation efficiency through the channel's inherent management capabilities.
Data Source
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AI summary
A radio communication device executing radio communication with a first radio communication device includes: a communication unit configured to transmit and receive a signal in a first layer, data of a second layer which is an upper layer of the first layer, and delivery confirmation information for the data; and a control unit configured to enable the delivery confirmation information to be transmitted from the communication unit to the first radio communication device using a shared channel of the first layer shared between a plurality of second radio communication devices including the radio communication device based on the signal received from the first radio communication device without using scheduling information allocated to the first radio communication device.